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