Research H&X pink fused aluminium oxide glass surface modification
Abstract: This paper impregnated by processing liquid soda-lime-silica glass system modified its surface, using the study of changes in the surface structure of soda-lime-silica glass before and after surface modification systems. Studies show that: the soda lime silica glass in the surface modification system formed on the surface more than one organic molecular layer, thereby to explore the mechanism of soda-lime-silica glass surface modification system.
Keywords: soda-lime-silica glass system surface modification mechanism
Snapshot text:
With the H&X silica powder development of science and technology, people's living standards continue to improve, to improve people's lives requires increasingly high glassware, decorative glass for its elegant appearance attracted attention, and thus there is a decorative glass boom. There are several methods for preparing decorative glass many methods, such as chemical etching, sand blasting method, a vapor deposition method, a thermal spraying method or the like, and organic coatings.
Brown Corundum
Brown Corundum
2014年3月7日星期五
2014年3月5日星期三
Activated calcium silicon
Activated alumina porous granular. For gas, water vapor, and some of the H&X china silicon carbide water has selective adsorption ability, and can be used as a catalyst and catalyst carrier and carrier of chromatographic analysis.
character
Porous granular.
use
For gas, water vapor, and some of the liquid water has selective adsorption ability. After the adsorption saturation can be in about 175-315 ℃ heating to remove water and resurrection. Adsorption and H&X calcium metal granules for many times. In addition to the used as a desiccant, but also from the pollution of the oxygen, hydrogen, carbon dioxide adsorption oil steam, gas, etc. And can be used as a catalyst and catalyst carrier and carrier of chromatographic analysis.
Preparation or source
Controlled by the temperature heating aluminum hydroxide to remove moisture.
character
Porous granular.
use
For gas, water vapor, and some of the liquid water has selective adsorption ability. After the adsorption saturation can be in about 175-315 ℃ heating to remove water and resurrection. Adsorption and H&X calcium metal granules for many times. In addition to the used as a desiccant, but also from the pollution of the oxygen, hydrogen, carbon dioxide adsorption oil steam, gas, etc. And can be used as a catalyst and catalyst carrier and carrier of chromatographic analysis.
Preparation or source
Controlled by the temperature heating aluminum hydroxide to remove moisture.
2014年3月2日星期日
The salient features of calcium silicon
H&X buy brown fused alumina with high purity, good crystalline liquidity, low coefficient of linear expansion, corrosion-resistant characteristics. Dozens of refractory producers proven that the product has not detonate in the application process, not H&X silicon carbide abrasive powder, not crack characteristics. In particular, its cost is much higher than conventional corundum, but making the best of corundum refractory aggregate and filler.
2014年2月27日星期四
black silicon carbide three kinds of law
Synthesis
There are H&X brown aluminum oxide nitridation of silicon powder, silicon dioxide and silicon tetrachloride reduction method. In large-scale industrial production, silica reduction method is more valued by the people. Reduction of silica silica powder 100 parts (by weight, hereinafter the same), mixed with 35 parts of carbon black, 100 parts of urea resin, and then 800 parts of water, 0.1 parts of aluminum oxide (as used in nuclear reactor), 1 part of oxalic acid H&X silica sand supplier parts of ammonium and nonionic surfactants (as a dispersant), for strong stirring, and aqueous ammonia was added with stirring to adjust the Ph of 9.0. Good slurry was spray-dried material, the resultant was dried in an electric furnace in a nitrogen atmosphere for 3 h at 1480 ℃ reduction nitridation reaction. Then restore the reaction product in. 720 ℃, the air carried off the carbon treatment, to obtain silicon nitride powder products.
There are H&X brown aluminum oxide nitridation of silicon powder, silicon dioxide and silicon tetrachloride reduction method. In large-scale industrial production, silica reduction method is more valued by the people. Reduction of silica silica powder 100 parts (by weight, hereinafter the same), mixed with 35 parts of carbon black, 100 parts of urea resin, and then 800 parts of water, 0.1 parts of aluminum oxide (as used in nuclear reactor), 1 part of oxalic acid H&X silica sand supplier parts of ammonium and nonionic surfactants (as a dispersant), for strong stirring, and aqueous ammonia was added with stirring to adjust the Ph of 9.0. Good slurry was spray-dried material, the resultant was dried in an electric furnace in a nitrogen atmosphere for 3 h at 1480 ℃ reduction nitridation reaction. Then restore the reaction product in. 720 ℃, the air carried off the carbon treatment, to obtain silicon nitride powder products.
2014年2月18日星期二
Silicon carbide refractories quality profile
Abstract: this paper introduces the properties of silicon carbide refractories H&X silicon carbide green, development and application of key words: silicon carbide refractories, properties, development and application of silicon carbide has high fire-resistant performance and chemical stability, so they are widely used in all kinds of refractory, but at present our country there is no complete the different content of the chemical analysis method of silicon carbide refractories. The analysis of the silicon carbide refractories quality projects generally have: free carbon, silica, silicon carbide, free silicon, ferric oxide, alumina. 1. The free carbon analysis free carbon has three methods, namely burning weight method, volumetric method, gas weight method. Burning weight method is applicable only to pure silicon carbide sample, organic and crystallization water and H&X garnet abrasive volatile nature of the refractory materials do not apply this method to determine; Gas volumetric method due to the fast analysis speed, high precision, simple operation, the most commonly used; Gas weight method because the test time is long, the accuracy is not high, not commonly used, but this method can extend the time of sample decomposition, at the same time, the carbon dioxide absorbed dose is larger, so it is suitable for the determination of silicon carbide refractories quality of high carbon refractory. 2. Analysis of silicon carbide silicon carbide has the direct method and indirect method. The indirect method is divided into determination of carbon in silicon carbide to conversion and determination of silicon in silicon carbide to conversion two kinds big. The indirect method to measure silicon low requirement to the instrument, conversion coefficient is small, but the test time is long, complex operation, not easy to master, carbon measurement method is rapid, simple, less interference, wide applicable scope, precision demand is high, but the instrument scaling factor. Commonly used gas volumetric method and weight method and infrared absorption method to measure carbon gases.
2014年2月11日星期二
Silicon carbide abrasive universal problems exist
Keywords: binding H&X fused silica manufacturers performance silicon carbide abrasive hardness refractoriness high firing temperature oxidizing atmosphere roasting oxidation and decomposition reactions firing process
Snapshot text:
? Silicon carbide abrasive produced during calcination sinister ills Guang Sri Lanka which is the production of long universality exists any questions, problems between the extent of its existence due to the plant's production conditions and stability of the firing process varies. According to early 2073 industry survey and part of the production plant to incomplete statistics, black heart rejection rate Nom total output accounted for abrasive 0.04 to 2. H&X Aluminium hydroxide powder silicon carbide abrasive easier to produce black heart specifications.
Snapshot text:
? Silicon carbide abrasive produced during calcination sinister ills Guang Sri Lanka which is the production of long universality exists any questions, problems between the extent of its existence due to the plant's production conditions and stability of the firing process varies. According to early 2073 industry survey and part of the production plant to incomplete statistics, black heart rejection rate Nom total output accounted for abrasive 0.04 to 2. H&X Aluminium hydroxide powder silicon carbide abrasive easier to produce black heart specifications.
2014年2月10日星期一
The synthesis of silicon carbide and main purpose
By the sand and the right amount of carbon in electric furnace heating. Figure XIV - 8 Lely furnace A - graphite tube; B - adiabatic area; C - graphite rod; D - graphite heater; E - single crystal growth of crucible; F - temperature measurement with observation seam; G - temperature window silica carbide reduction method of the average particle size of 0.01 microns 1 silica powder H&X Al2O3 powder and average particle size of 0.05 mu m 2 carbon powder and the average particle size of 0.1 mu m fine crystalline under beta 0.04 a mixed type of silicon carbide powder, and then into graphite containers, in the argon gas flow (flow: 2 L/min), at 1600 ℃ for 5 h reaction, then the reaction product in air, heat for 2 h at 700 ℃, to remove residual carbon, made beta type silicon carbide powder products. The equation is as follows: SiO2 + 2 + 3 csic co starting material of silicon carbide fiber is the boiling point is 70 ℃ liquid dimethyl dichlorosilane. With the function of sodium metal. In an inert organic solvent is higher than the boiling point of sodium, sodium was scattered, molten state in which dripped with dimethyl dichlorosilane, hydrochloric acid reaction at the same time generate poly silane. Will gather silane in inert atmosphere heated to above H&X Alumina Oxide, the heat transfer reaction and polymerization reaction, generate intermediate carbon silane. The melt spinning fiber. Get of carbon silane fiber in high temperature calcination process processing, bridging reaction because the oxygen in the air, often in a nitrogen atmosphere heat treatment, the temperature is 1200 ~ 1500 ℃ was high strength of silicon carbide fibers. Figure XIV - 9 A - hydrogen gas instead should be synthetic device entry; B - hydrogen purification device; C - meter; D - constant temperature bath; E - temperature measurement using prism; F - gas exports; G - quartz glass tube; H - base material; I - high frequency induction coil;
2014年1月20日星期一
The main analytical test methods silicon carbide powder:
The main purpose
For H&X garnet abrasive inch monocrystalline silicon, polycrystalline silicon, gallium arsenide, wire-cut quartz crystal. Processing materials are engineered solar photovoltaic industry, the semiconductor industry, piezoelectric crystal industry.
The main analysis of silicon carbide detection methods:
Determine the content of silicon carbide in the silicon carbide hardness. SiC particle size on the line cutting a great impact, but the most important thing is the shape of the silicon carbide particles. Because when H&X Aluminium hydroxide wire cutting silicon carbide particles to change the shape of the free state of cutting efficiency and cutting quality to be an important influence.
Detection methods: silicon content requires atomic absorption detection (high detection efficiency, more accurate values).
Silicon carbide particle resistance method requires particle analyzer (high efficiency).
Silicon carbide grain type detection requires Reith RA200 particle analyzer. (Particle shape can be analyzed more accurate roundness factor)
For H&X garnet abrasive inch monocrystalline silicon, polycrystalline silicon, gallium arsenide, wire-cut quartz crystal. Processing materials are engineered solar photovoltaic industry, the semiconductor industry, piezoelectric crystal industry.
The main analysis of silicon carbide detection methods:
Determine the content of silicon carbide in the silicon carbide hardness. SiC particle size on the line cutting a great impact, but the most important thing is the shape of the silicon carbide particles. Because when H&X Aluminium hydroxide wire cutting silicon carbide particles to change the shape of the free state of cutting efficiency and cutting quality to be an important influence.
Detection methods: silicon content requires atomic absorption detection (high detection efficiency, more accurate values).
Silicon carbide particle resistance method requires particle analyzer (high efficiency).
Silicon carbide grain type detection requires Reith RA200 particle analyzer. (Particle shape can be analyzed more accurate roundness factor)
The crystal structure of silicon carbide powder
Feature
Green, crystal H&X white fused alumina suppliers, high hardness, strong cutting ability, stable chemical properties, good thermal conductivity. Microscopic shape of a hexagonal crystal, silicon carbide 9.2 Mohs hardness, Vickers hardness of 3000 - 3300 kg / mm 2, a Knoop hardness of 2670-2815 kg / mm, hardness 3300 kg per cubic millimeter. Higher than corundum abrasives and second only to diamond, cubic boron nitride and boron carbide. Density is generally considered to be H&X garnet 80 mesh g / mm 3, the bulk density of silicon carbide abrasive nature of the 1.2 - between 1.6 g / mm 3, a specific gravity of 3.20 to 3.25. Green silicon carbide based petroleum coke and quality silica as the main raw material, add salt as an additive, smelting electric arc furnace. Hardness between corundum and diamond, corundum higher mechanical strength.
Green, crystal H&X white fused alumina suppliers, high hardness, strong cutting ability, stable chemical properties, good thermal conductivity. Microscopic shape of a hexagonal crystal, silicon carbide 9.2 Mohs hardness, Vickers hardness of 3000 - 3300 kg / mm 2, a Knoop hardness of 2670-2815 kg / mm, hardness 3300 kg per cubic millimeter. Higher than corundum abrasives and second only to diamond, cubic boron nitride and boron carbide. Density is generally considered to be H&X garnet 80 mesh g / mm 3, the bulk density of silicon carbide abrasive nature of the 1.2 - between 1.6 g / mm 3, a specific gravity of 3.20 to 3.25. Green silicon carbide based petroleum coke and quality silica as the main raw material, add salt as an additive, smelting electric arc furnace. Hardness between corundum and diamond, corundum higher mechanical strength.
2013年12月30日星期一
Review of Corrosion THAUMASITE type sulphate
Abstract: The current research status of white fused alumina suppliers thaumasite sulfate corrosion stone type were reviewed, raised some issues to be studied, called for the country to strengthen investigation and research in this area to explore measures to prevent THAUMASITE type of corrosion .
Keywords: thaumasite sulfate attack concrete
DOI: TU52801
Snapshot text:
Introduction
Sulfate corrosion of black silicon carbide manufacturers or mortar, there are two forms, namely ettringite type corrosion and THAUMASITE type corrosion. Ettringite type of corrosion is due to the environment of cement sulphate and calcium hydroxide reacts gypsum, plaster and these ettringite in hydrated calcium aluminate cement reacts with (C2A · 3CaSO4 · 32H2O) crystal , its volume increased more than 1.5 times the original volume.
Keywords: thaumasite sulfate attack concrete
DOI: TU52801
Snapshot text:
Introduction
Sulfate corrosion of black silicon carbide manufacturers or mortar, there are two forms, namely ettringite type corrosion and THAUMASITE type corrosion. Ettringite type of corrosion is due to the environment of cement sulphate and calcium hydroxide reacts gypsum, plaster and these ettringite in hydrated calcium aluminate cement reacts with (C2A · 3CaSO4 · 32H2O) crystal , its volume increased more than 1.5 times the original volume.
Detailed calcium silicon ratio and concrete
calcium silicon than the larger, more vulnerable to sulfate attack concrete and alkali-aggregate reaction. Besides ettringite recrystallization will decompose, resulting in poor stability. One of these is generally mixed with volcanic ash admixture purpose is to improve the material and silica fume silica, calcium granules than concrete, so that the mechanical properties and durability of concrete to achieve better. Theoretically hydrated calcium silicate silicon ratio is between 1.7 to 2.3 at. Over this range, the concrete will be a problem.
Quantitative analysis THAUMASITE formation mechanism
Abstract : Two experimental methods designed synthetic THAUMASITE to study erosion mechanism of cement-based silica sand manufacturers THAUMASITE 's . X-ray diffraction , Raman spectroscopy of cement -based materials instars qualitative analysis of reaction products , and using the Rietveld method for quantitative characterization. The results showed that: THAUMASITE in ettringite can still form an environment , it can be directly described reaction ; in the presence of ettringite formation environment THAUMASITE also be generated , indicating that the carbon and sulfur wollastonite formation mechanism Woodfordite transition mechanism exists. The presence of ettringite increases the yield of thaumasite . In comparison , Woodfordite transition mechanism is more likely to occur than the direct formation mechanism , and the two mechanisms can coexist simultaneously.
Keywords : quantitative Rietveld method based materials THAUMASITE cement analysis
Funds: China Building garnet manufacturers Academy , State Key Laboratory of Green Building Materials Open Fund " cement-based materials THAUMASITE quantitative characterization " ( 533001 ) funded projects
CLC : TU528
Snapshot text :
Thaumasite stone (CaCO3 CaSiO3 CaSO4 15H2O) is due to cement-based materials under long-term immersion in sulfate environment , and with adequate water sources and the environment carbonate produced [ 1 ] . THAUMASITE formation mechanism is now more recognized in two ways: one is the erosion of the environment sulfate , aggregate or carbonized get carbonates, adequate water and hardened cement paste in C-S-H react directly .
Keywords : quantitative Rietveld method based materials THAUMASITE cement analysis
Funds: China Building garnet manufacturers Academy , State Key Laboratory of Green Building Materials Open Fund " cement-based materials THAUMASITE quantitative characterization " ( 533001 ) funded projects
CLC : TU528
Snapshot text :
Thaumasite stone (CaCO3 CaSiO3 CaSO4 15H2O) is due to cement-based materials under long-term immersion in sulfate environment , and with adequate water sources and the environment carbonate produced [ 1 ] . THAUMASITE formation mechanism is now more recognized in two ways: one is the erosion of the environment sulfate , aggregate or carbonized get carbonates, adequate water and hardened cement paste in C-S-H react directly .
2013年12月29日星期日
Calcium silicon ratio to ensure the use of best quality aerated concrete
Summary : Positive since 2010 " aerated concrete production waste pulp mill technology and mix back silicon carbide price " [ 1 ] After the article was published, received many calls and letters from enthusiastic readers , and claimed that in almost identical conditions , but also that the parameters ( temperature , pressure, time , quality, etc. ) under the same circumstances, but with the same cast a tie instability phenomenon than the production of aerated concrete : the slurry in the mold box sent gas height vary greatly, sometimes hair dissatisfied , sometimes overflowing slurry , high or low quality products , fused aluminium oxide
Keywords : silicon calcium fly ash aerated concrete mix concrete production than raw computing process conditions optimal hydration products of cement lime
CLC : TU528
Snapshot text :
Since 2010 , " aerated concrete production waste pulp mill technology and mix back calculation " [ 1 ] after the article was published, received many calls and letters from enthusiastic readers , and claimed that in almost identical conditions , which is the parameters ( temperature , pressure, time , quality, etc. ) under the same circumstances, but with the same cast a tie instability phenomenon than the production of aerated concrete : the slurry in the mold box sent gas is high.
Keywords : silicon calcium fly ash aerated concrete mix concrete production than raw computing process conditions optimal hydration products of cement lime
CLC : TU528
Snapshot text :
Since 2010 , " aerated concrete production waste pulp mill technology and mix back calculation " [ 1 ] after the article was published, received many calls and letters from enthusiastic readers , and claimed that in almost identical conditions , which is the parameters ( temperature , pressure, time , quality, etc. ) under the same circumstances, but with the same cast a tie instability phenomenon than the production of aerated concrete : the slurry in the mold box sent gas is high.
How autoclaved aerated brick-lime-silica ratio is counted out
1, the solution is equipped with:
1.1 Weigh the dried sample had 105-110 ℃, accurate to 0.001g, silver crucible is placed;
1.2 added 6-7g sodium Aluminium hydroxide;
1.3 Ma boiling furnace gradually from a low melting temperature to 650 ℃ 20min;
1.4 Remove the cooling, the crucible into the already nearly filled with 100ml of boiling water in a beaker, to be completely leached frit, remove the crucible;
1.5 with dilute hydrochloric acid and washed with hot water and the lid of the crucible, once 30ml of hydrochloric acid was added under stirring;
1.6 1ml of the nitric acid solution was added and heated to boiling, cooled, and then shifted 250ml china silicon carbide flask is diluted to the mark with water, shake up.
2, fly ash Sio2 determination:
2.1 Instrument:
a, electro-optical analysis level; b, 250ml plastic cups; c, 250mm plastic rods; d, plastic funnel;
e, 50ml pipette
2.2 Reagents:
a, 15% potassium fluoride; b, 5% potassium chloride; c, 5% potassium chloride - ethanol solution; d, phenolphthalein indicator;
e, 0.15M NaoH standard solution
1.1 Weigh the dried sample had 105-110 ℃, accurate to 0.001g, silver crucible is placed;
1.2 added 6-7g sodium Aluminium hydroxide;
1.3 Ma boiling furnace gradually from a low melting temperature to 650 ℃ 20min;
1.4 Remove the cooling, the crucible into the already nearly filled with 100ml of boiling water in a beaker, to be completely leached frit, remove the crucible;
1.5 with dilute hydrochloric acid and washed with hot water and the lid of the crucible, once 30ml of hydrochloric acid was added under stirring;
1.6 1ml of the nitric acid solution was added and heated to boiling, cooled, and then shifted 250ml china silicon carbide flask is diluted to the mark with water, shake up.
2, fly ash Sio2 determination:
2.1 Instrument:
a, electro-optical analysis level; b, 250ml plastic cups; c, 250mm plastic rods; d, plastic funnel;
e, 50ml pipette
2.2 Reagents:
a, 15% potassium fluoride; b, 5% potassium chloride; c, 5% potassium chloride - ethanol solution; d, phenolphthalein indicator;
e, 0.15M NaoH standard solution
Calcium silicon ratio calculation
Production process parameters are:
Pouring calcium metal granules 43 ℃, mold is 4.20m × 1.20m × 0.6m, surface Baotou 5% water feed ratio was 0.62. Determined by trial production with the ratio of:
m (cement): m (lime): m (fly ash): m (gypsum) = 8:24:65:3;
3, calcium silicon ratio calculation method:
C / S = ((8 × 59.37% +24 × 71.5% +65 × 2.6% +3 × 30%) / 56) / ((8 × 22.7% +24 × 5.5% +65 × 46.2%) / 60) = 0.76
56 and 60, respectively, calcium oxide, silicon dioxide molar mass [1]
4, the production of aerated concrete optimal calcium silicon ratio range:
① cement - lime - fly ash aerated concrete series of 0.75 to 0.80
② cement - lime - sand aerated concrete range from 0.64 to 0.68;
③ cement - lime - metal tailings aerated concrete series of 0.55 to 0.62.
5, in the actual production of aerated concrete, when the mixing ratio of calcium silicon ratio is less than optimal calcium silicon ratio, with the strength of the products (cement, lime) to increase the amount of binder increased. When the mixing ratio of calcium silicon ratio greater than optimal calcium silicon, continue to increase the amount of binder strength products are no longer rising even decline.
Pouring calcium metal granules 43 ℃, mold is 4.20m × 1.20m × 0.6m, surface Baotou 5% water feed ratio was 0.62. Determined by trial production with the ratio of:
m (cement): m (lime): m (fly ash): m (gypsum) = 8:24:65:3;
3, calcium silicon ratio calculation method:
C / S = ((8 × 59.37% +24 × 71.5% +65 × 2.6% +3 × 30%) / 56) / ((8 × 22.7% +24 × 5.5% +65 × 46.2%) / 60) = 0.76
56 and 60, respectively, calcium oxide, silicon dioxide molar mass [1]
4, the production of aerated concrete optimal calcium silicon ratio range:
① cement - lime - fly ash aerated concrete series of 0.75 to 0.80
② cement - lime - sand aerated concrete range from 0.64 to 0.68;
③ cement - lime - metal tailings aerated concrete series of 0.55 to 0.62.
5, in the actual production of aerated concrete, when the mixing ratio of calcium silicon ratio is less than optimal calcium silicon ratio, with the strength of the products (cement, lime) to increase the amount of binder increased. When the mixing ratio of calcium silicon ratio greater than optimal calcium silicon, continue to increase the amount of binder strength products are no longer rising even decline.
2013年12月20日星期五
Precautions when calcium
If improper food ingredients calcium silicon, while containing excessive intake of phytic acid, oxalic acid, tannic acid foods (such as spinach, etc.) and with fatty foods (mainly lard and fat), and calcium will combine and reduce the absorption of calcium. In addition, some high-quality protein (such as beef, fish, seafood, lean pork, etc.), released in the intestine during digestion of amino acids, can reduce intestinal acidity and calcium easily absorbed form of calcium, can also reduce calcium absorption. So calcium addition, to avoid interactions and the impact of food ingredients to reduce the loss of calcium.
There are a variety of hormones hormones can promote intestinal absorption of calcium, the most important is the active vitamin D3. Low levels of active vitamin D3 elderly, affecting calcium absorption and utilization. While calcium white fused alumina suppliers need active vitamin D3. Other hormones promote intestinal calcium absorption are: estrogen, androgens, growth hormone, calcitonin. Postmenopausal women, estrogen decreases intestinal calcium absorption decreases estrogen supplementation can increase intestinal calcium absorption, increase bone mass. Estrogen replacement therapy, should begin as soon as possible after menopause, adhere to at least 75 years of age. Other hormones may also be appropriate to add to increase the calcium effect. Of course, we must supplement the hormone under the guidance of experienced doctors.
Reduce outdoor sports activities too little can lead to osteoporosis or accelerated osteoporosis. If you insist on outdoor sports, receive sunlight a day, and even refused to accept the active vitamin D3. In China, the southerners than the northerners bone content, which is due south over the northern sunlight received sufficient reason.
There are a variety of hormones hormones can promote intestinal absorption of calcium, the most important is the active vitamin D3. Low levels of active vitamin D3 elderly, affecting calcium absorption and utilization. While calcium white fused alumina suppliers need active vitamin D3. Other hormones promote intestinal calcium absorption are: estrogen, androgens, growth hormone, calcitonin. Postmenopausal women, estrogen decreases intestinal calcium absorption decreases estrogen supplementation can increase intestinal calcium absorption, increase bone mass. Estrogen replacement therapy, should begin as soon as possible after menopause, adhere to at least 75 years of age. Other hormones may also be appropriate to add to increase the calcium effect. Of course, we must supplement the hormone under the guidance of experienced doctors.
Reduce outdoor sports activities too little can lead to osteoporosis or accelerated osteoporosis. If you insist on outdoor sports, receive sunlight a day, and even refused to accept the active vitamin D3. In China, the southerners than the northerners bone content, which is due south over the northern sunlight received sufficient reason.
2013年12月19日星期四
Why still calcium calcium years
Of course, you can also help prevent salt reduction , treatment of hypertension and reduce the risk of heart attack and cerebrovascular disease , while making your weight has dropped, to sandblasting abrasive weight loss fitness purposes.
Why still calcium calcium for many years ?
In the calcium therapy, often encounter a universal problem that some people even served a few years or calcium calcium , bone mineral density at the time of inspection or the doctor says osteoporosis. Why is this ? On this issue to understand from the following aspects.
Most scholars small dose of calcium recommended to prevent osteoporosis calcium intake to 1000-1500 mg daily . At present, China produces calcium preparations , most marked in accordance with the amount of calcium dose , while the amount of calcium and calcium content vary greatly. Such as calcium lactate calcium per 8 grams only 1 gram. Dose of calcium , the calcium content must be how to fill . For example, commonly used Gaitianli and vitality calcium granules, calcium content is 25 milligrams , that such dietary calcium supplementation of 600 mg per day , then at least be served daily calcium and vitality Gaitianli 24 ( 600 mg ) , to meet the needs of the elderly and in patients with osteoporosis . Other calcium supplement is the same principle , is to be marked according to the manufacturer 's calcium content , rather than the amount of calcium , usually 600 mg daily . If the dose is too small , of course, can not receive calcium effect.
Calcium imbalance in the normal case , the ratio of phosphorus and calcium in bone is 0.6 , i.e., every 3 mEq / l of calcium have 2 mEq / l phosphorus. Calcium to phosphorus ratio is inappropriate, it will affect calcium absorption and utilization. Especially phosphorus deficiency will lead to bone loss . Elderly due to reduced intake , combined with fish , liver, meat , eggs and other foods rich in phosphorus fear , inadequate intake, despite adequate calcium supplements , but because there is not enough phosphorus , no significant increase in calcium deposition . The reason for the fresh milk osteoporosis favorable milk calcium to phosphorus ratio is appropriate to achieve calcium, phosphorus double- up role.
Why still calcium calcium for many years ?
In the calcium therapy, often encounter a universal problem that some people even served a few years or calcium calcium , bone mineral density at the time of inspection or the doctor says osteoporosis. Why is this ? On this issue to understand from the following aspects.
Most scholars small dose of calcium recommended to prevent osteoporosis calcium intake to 1000-1500 mg daily . At present, China produces calcium preparations , most marked in accordance with the amount of calcium dose , while the amount of calcium and calcium content vary greatly. Such as calcium lactate calcium per 8 grams only 1 gram. Dose of calcium , the calcium content must be how to fill . For example, commonly used Gaitianli and vitality calcium granules, calcium content is 25 milligrams , that such dietary calcium supplementation of 600 mg per day , then at least be served daily calcium and vitality Gaitianli 24 ( 600 mg ) , to meet the needs of the elderly and in patients with osteoporosis . Other calcium supplement is the same principle , is to be marked according to the manufacturer 's calcium content , rather than the amount of calcium , usually 600 mg daily . If the dose is too small , of course, can not receive calcium effect.
Calcium imbalance in the normal case , the ratio of phosphorus and calcium in bone is 0.6 , i.e., every 3 mEq / l of calcium have 2 mEq / l phosphorus. Calcium to phosphorus ratio is inappropriate, it will affect calcium absorption and utilization. Especially phosphorus deficiency will lead to bone loss . Elderly due to reduced intake , combined with fish , liver, meat , eggs and other foods rich in phosphorus fear , inadequate intake, despite adequate calcium supplements , but because there is not enough phosphorus , no significant increase in calcium deposition . The reason for the fresh milk osteoporosis favorable milk calcium to phosphorus ratio is appropriate to achieve calcium, phosphorus double- up role.
Daily food , calcium silicon
Daily food sources of calcium metal granules in cow milk and dairy products for the best, not only abundant , and the absorption rate. Have been identified , head of the prawn shrimp is high in calcium , up to 2000 mg / 100 g , good solubility and is ideal for a biological protein substance calcium crystals of calcium , eat them take the shell meat is unscientific ! Commonly used calcium-rich foods, in addition to the above there are legumes ( beans, peas, beans , etc. and their products ) , walnuts, sesame seeds , seaweed, kelp , etc.
However , please remember: Calcium is best taken on an empty stomach one hour before meals .
(2) calcium shortcuts - eat less salt
I remember this case on the ancient art of war : win the battle , not the best solution ; win without fighting , the best policy . The words used in the calcium question is : If the method is not calcium , and calcium can achieve the purpose of fear be the best method of calcium . So , there is no calcium and calcium ways to achieve it? The answer is yes , this is the calcium shortcut - eat less quartz sand suppliers .
Eat less salt calcium method , first proposed by British scientists . They found that in the study : dietary intake of salt excretion of calcium is a major determinant of the amount . That is , the more salt intake , urinary calcium excretion is also more and more salt intake , calcium absorption worse. Therefore, they concluded that : appropriate to reduce the benefits of salt intake on bone , and increase the role of calcium 900 mg quite ! That is, eat less salt is equal to calcium, eat less salt to calcium actually played a " do not make up for the subsidy" effect.
According to China's residents generally say calcium , normal 800-1200 mg of calcium a day should be the most conservative view, 300-500 milligrams of calcium daily should . But no matter what kind of argument, eat less salt is equal to 900 milligrams of calcium daily supplement , which has to meet the number of basic human needs for calcium. Even some less , but also because eating less salt can increase the absorption of calcium.
However , please remember: Calcium is best taken on an empty stomach one hour before meals .
(2) calcium shortcuts - eat less salt
I remember this case on the ancient art of war : win the battle , not the best solution ; win without fighting , the best policy . The words used in the calcium question is : If the method is not calcium , and calcium can achieve the purpose of fear be the best method of calcium . So , there is no calcium and calcium ways to achieve it? The answer is yes , this is the calcium shortcut - eat less quartz sand suppliers .
Eat less salt calcium method , first proposed by British scientists . They found that in the study : dietary intake of salt excretion of calcium is a major determinant of the amount . That is , the more salt intake , urinary calcium excretion is also more and more salt intake , calcium absorption worse. Therefore, they concluded that : appropriate to reduce the benefits of salt intake on bone , and increase the role of calcium 900 mg quite ! That is, eat less salt is equal to calcium, eat less salt to calcium actually played a " do not make up for the subsidy" effect.
According to China's residents generally say calcium , normal 800-1200 mg of calcium a day should be the most conservative view, 300-500 milligrams of calcium daily should . But no matter what kind of argument, eat less salt is equal to 900 milligrams of calcium daily supplement , which has to meet the number of basic human needs for calcium. Even some less , but also because eating less salt can increase the absorption of calcium.
The role of calcium silicon
Why do we eat every day Brown Corundum foods , such as beans, dairy products, fish , crustaceans , bone , etc., but also the body of calcium it . Originally, calcium -containing foods , mostly dissolved calcium is not easily absorbed . But also because with the cereal , dishes with meal , meat, grains contain phytic acid or containing acid, the calcium will become insoluble calcium can not be absorbed. Calculated according to modern nutritional standards are: the need of adult calcium ( referred to as " ionized calcium " ) of the biological dose , not less than 800 mg , children should not be less than 1000 mg. Unfortunately, for a long time , the medical community as a pure calcium calcium incorrectly ( ie, ionized calcium ) calculated that in the past could not have played many medicinal calcium real calcium effect. Fortunately, in recent years has found that this fallacy , and correct . One molecule of calcium , a calcium ion , only one word , leading to a worldwide human "calcium revolution" !
calcium granules have calcium, everyone should raise awareness of calcium , the question is what kind of calcium supplement , how to make ? Despite a long time, the medical community recognized calcium is a problem, but the three conditions ideal calcium should have , namely ① both contain high quantities , but also contains high quality pure calcium ; ② can be fully dissolved ; easily absorbed after taking ③ use . Has developed a lot , more in line with scientific requirements , the new safe and efficient calcium nutrition enhancer .
calcium granules have calcium, everyone should raise awareness of calcium , the question is what kind of calcium supplement , how to make ? Despite a long time, the medical community recognized calcium is a problem, but the three conditions ideal calcium should have , namely ① both contain high quantities , but also contains high quality pure calcium ; ② can be fully dissolved ; easily absorbed after taking ③ use . Has developed a lot , more in line with scientific requirements , the new safe and efficient calcium nutrition enhancer .
2013年12月14日星期六
Garnet sand Detail
garnet sand, garnet abrasive raw materials, with high hardness, high temperature stability, chemical resistance, uniform particles, high grinding efficiency, no scratches and other characteristics suitable for water jet cutting industry;. Various metals, plastics , wood and other surfaces sandblasted industry; ultra-fine grinding machinery industry, precision casting and for CRT glass, optical glass, silicon and other grinding industries;
Garnet sand origin
China garnet sand origin especially Inner Mongolia, Jiangsu Lianyungang, Rizhao most representative Mongolia garnet hardness, but mainly for the wind to wash the dust content is relatively large, the impact of cutting speed, the other, mostly small workshop production, deep Habitat inland transport costs are very high; Jiangsu Lianyungang garnet sand has been a major producer of domestic pomegranate sand, bright colors, hardness in general, open pit, mostly for local small workshop production, and therefore cheap low cost cheap, quality control is not strictly , often have a variety of impurities, often waterjet plug phenomenon, by the end of 2011, Lianyungang local government closed the mine, prohibit any person opened indiscriminate mining, which led to a very tight supply of garnet sand; Shandong Rizhao garnet sand for the deep mine, blackish dark red color, hardness, starting in 2011 in the domestic market, is less well known and therefore another origin, supply capacity, quality and stability, maritime land are more convenient, the next few years The main origin of Chinese garnet silica sand price.
Garnet sand process data and physicochemical properties
1, chemical analysis: (%)
SiO2 :36 - 40 AL2O3 :20 - 24 Fe2O3 :4 - 6 TiO2 :0-0 .5 MgO :8-13 FeO :22 - 24 CaO :6 - 9 MNO :0-0 .5
2, Hardness: Mohs 7.5-7.9;
3, specific gravity: 3.98
4, strength: Tough
5, gloss: shiny glass
6 forms: angular, irregular
7, crystal shape: isometric crystal system, octahedral corners
8 Streak: White
9 colors: cherry red, orange-red based
10, cleavage: Texture little, irregular cleavage plane
11 Transparency: Transparent
12, melting point: 1340 ℃
13: Magnetic: weak magnetic
14: Water Absorption: non-absorbent
15: Dispersion: Self-diffusion
16: Uniformity: homogeneous body
17, pathological response: None
18, the silicon content of hazardous freedom: None
Garnet sand origin
China garnet sand origin especially Inner Mongolia, Jiangsu Lianyungang, Rizhao most representative Mongolia garnet hardness, but mainly for the wind to wash the dust content is relatively large, the impact of cutting speed, the other, mostly small workshop production, deep Habitat inland transport costs are very high; Jiangsu Lianyungang garnet sand has been a major producer of domestic pomegranate sand, bright colors, hardness in general, open pit, mostly for local small workshop production, and therefore cheap low cost cheap, quality control is not strictly , often have a variety of impurities, often waterjet plug phenomenon, by the end of 2011, Lianyungang local government closed the mine, prohibit any person opened indiscriminate mining, which led to a very tight supply of garnet sand; Shandong Rizhao garnet sand for the deep mine, blackish dark red color, hardness, starting in 2011 in the domestic market, is less well known and therefore another origin, supply capacity, quality and stability, maritime land are more convenient, the next few years The main origin of Chinese garnet silica sand price.
Garnet sand process data and physicochemical properties
1, chemical analysis: (%)
SiO2 :36 - 40 AL2O3 :20 - 24 Fe2O3 :4 - 6 TiO2 :0-0 .5 MgO :8-13 FeO :22 - 24 CaO :6 - 9 MNO :0-0 .5
2, Hardness: Mohs 7.5-7.9;
3, specific gravity: 3.98
4, strength: Tough
5, gloss: shiny glass
6 forms: angular, irregular
7, crystal shape: isometric crystal system, octahedral corners
8 Streak: White
9 colors: cherry red, orange-red based
10, cleavage: Texture little, irregular cleavage plane
11 Transparency: Transparent
12, melting point: 1340 ℃
13: Magnetic: weak magnetic
14: Water Absorption: non-absorbent
15: Dispersion: Self-diffusion
16: Uniformity: homogeneous body
17, pathological response: None
18, the silicon content of hazardous freedom: None
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