Method for preparing granular anhydrous sodium metasilicate

Application Number: 00120596
Application Date: 2000.11.21
Publication Number: 1290653
Publication Date: 2001.04.11
Priority Information:
International: B01D1/18;C01B33/32
Applicant(s) Name: Duo'en Daily Chemical Industry Co., Ltd. Chengdu
Inventor(s) Name: Li Zewen;Zhao Jihong
Patent Agency Code: 51100
Patent Agent: pu jiawei
Abstract Anhydrous sodium metasilicate is prepared by using sodium silicate as material and through the processes of measuring the modulus of water solution of sodium silicate, regulating the modulus with sodium hydroxide to 0.9-1.04, concentrating through heating at the temperature below the boiling point of the solution to weight concentration of 50-55 %, spraying via 2.0-2.5 mm diameter nozzles at 80-90 Kg/sq cm pressure and counter current spray drying with hot air at inlet temperature of 340-350 deg.C and outlet temperatuer of 80-90 deg.C.