Sodium silicate sodium silicate production methods dry (solid phase method) and wet method (liquid) two kinds.

1. The dry process production is after mixing quartz sand and soda ash according to certain proportion in reverberatory furnace heated to a temperature of about 1400 ℃, generate sodium silicate melt;

2. The wet production to quartzite powder and caustic soda as raw materials, in the pressure cooker, 0.6 ~ 1.0 MPa steam under reaction, directly generate liquid sodium silicate. Micro silicon powder can replace quartz mine produce modulus sodium silicate is 4.

Dry process production

The quartz sand and sodium salt (mainly refers to the Na2CO3, Na2SO4) mix, at about 1400 ℃ high temperature melting reaction. According to different raw material is divided into soda ash and glauber's salt method. Production process involves ingredients, calcining and leaching solvent, concentration and so on four working procedure.

Specific process is:

A: ingredients and melt: soda ash and glauber's salt and quartz sand in proportion, the blender mixing evenly after the storage tank, the feed hopper by screw conveyor to join reverberatory furnace or horseshoe flame furnace for melting reaction.

2: dissolve: furnace in raw materials, has molten sodium silicate can from the feed opening into the cooling tank, via a small crawler conveyor into storage cask, by electric driving after weighing the glass block within the bucket lift into the cylinder, according to different specifications pieces weight and adding suitable amount of water, dissolve into steam, steam pressure generally from 0.4 to 0.4 MPa, the hydraulic cylinder speed is 2 ~ 4 r/min, dissolves in a certain concentration in the supernatant groove, the natural sink to remove impurities.

Solution of the three: enrichment: removing impurities concentrated slot for enrichment, using indirect steam heating, the bottom of the channel using heating furnace flue gas waste heat, solution concentration is the finished product to the required concentration.

Wet production

Paohuajian wet production is divided into traditional wet process and active SiO2 atmospheric production process. Traditional wet production process of traditional wet paohuajian high output, low energy consumption, low labor intensity, the reactants, but this method can only produce modulus is less than 2.5 products, the production principle is dissolved in quartz sand in the high temperature caustic soda to generate sodium silicate. Active SiO2 atmospheric production process active SiO2 atmospheric paohuajian is of "three wastes" treatment process in recent years the development of a new process, currently USES the manufacturer is not much, the method can produce any product module is 2.2 ~ 3.7. Its mechanism is used in the production of industrial by-product of or scraps from the active SiO2 (or silica gel) under ordinary conditions of heating reaction between sodium silicate and caustic soda. Reaction equation is the same as the traditional wet process.