Process for the preparation of lithium silicate

Details Process for the preparation of lithium silicate Process for the preparation of lithium silicate

C - Chemistry, Metallurgy

01

B

23/189

C01B 33/32 (2006.01) C04B 35/16 (2006.01)

Patent

CA 1241523

ABSTRACT OF THE DISCLOSURE Lithium carbonate and silica are intimately mixed; the thus obtained mixture is submitted to a thermal pre- calcination treatment in moist air at a temperature comprised between 410°C and 440°C so as to form in said mixture at least 25 % by weight of a hexagonal phase composed of lithium, silicon and oxygen,whose crystal parameters are a = 3.06 .ANG. and c = 4.97 .ANG.. The obtained product is submitted to a high- density sintering treatment either directly or after a calcination treatment at a temperature between 450°C and 600°C.

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