process of phosphogypsum calcium silicate and alkali metal sulfate.

摘要

the present invention is to treat the phosphogypsum with a solution of alkali metal silicate and calcium silicate into the cake.in the solid state), and alkali metal sulfate (filtrate) aqueous solution. the alkali metal sulfate in the form of a solid is obtained after evaporation of the filtrate solution.the alkali metal is sodium or potassium.