FIELD: silicate technology; production of water glass. SUBSTANCE: method includes treatment of rise husk which was cleaned preliminary and calcined at temperature of 200 to 400 C with aqueous alkaline solution at temperature of from 80 to 120 C for 1 to 2 hours including bubbling with oxygen at flow rate of 0.01 to 0.05 l/min per kg of rice husk followed by stand and cooling of product. EFFECT: enhanced purity of water glass; reduced power requirements of process. 1 tbl, 10 ex
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