PROCESS FOR PREPARING BASIC ALUMINUM SALT SOLUTION

摘要

The present invention relates to a process for preparing a stable solution of a basic aluminum salt represented by the formula: Alm(OH)nX3m-n-2k(SO4)k WHEREIN X denotes Cl<-> or NO3<->, k, m and n are respective positive indices, 3m > n + 2k, the basicity ((n/3m) x 100) is 30 to 70% and k/m = 0.01 to 0.3, characterized by mixing a water-soluble sulfate or a solution containing SO4, a solution containing Al<+++> and X<-> and a sodium or potassium aluminate solution at a temperature below 40 DEG C so as to form a gel and then keeping the entire mixture at 50 DEG to 80 DEG C so that the gel is dissolved to give a basic aluminum salt solution.