The process of sodium metasilicate pentahydrate
Sodium metasilicate pentahydrate can be summed up in three forms on the production process:
1, "Continuous granulation": is the partial crystallization of sodium silicate solution through granulation device, a direct result required a continuous particle size, quality indicators meet HG/T2568-94 standards.
2 "crystal dehydration": also known as liquor cycle method is the partial solution of sodium silicate increases the crystallization temperature of seeds or liquor, dynamic drying after dewatering screening, are powdery and granular products, the method of mass production is difficult But the product is better than the look and mobility, physical and chemical indicators to achieve HG/T2568-94 standards.
3 "smashed crystal method": This method is partial to the required concentration of sodium silicate solution concentration, and additives through the addition of seed crystal into a massive lead all the solid solution, free water is completely converted to crystalline water, after the solid smash finished products, the advantages of this approach is to invest in smaller, but more serious damage on the crystal structure, environment and climate conditions require more stringent control, labor-intensive products with low brightness, easy to absorb moisture caking.
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