Production method of sodium silicate
The production methods of sodium silicate are divided into dry method (solid phase method) and wet method (liquid phase method).
1. Dry production is that quartz sand and soda ash are mixed according to a certain proportion and then heated to about 1400℃ in a reverberatory furnace to generate molten sodium silicate;
2. Wet production takes quartzite powder and caustic soda as raw materials, and reacts under 0.6～1.0 MPa steam in a high-pressure steamer to directly generate liquid water glass. Silica fume can replace Shi Ying mine to produce sodium silicate with modulus of 4.