Process for the recovery of a magnesium salt soluble in water from a mixture of reaction containing a soluble salt of magnesium in water and impurities of metal salt, silica

摘要

The addition of an excess of asbestos tailings in the course of the extraction of magnesium from asbestos tailings by digestion with an acid greatly facilitates the elimination of silica and other impurities by filtration of the resulting reaction mixture. The improvement reduces the filtration time and the filtration leaves a cake which is much easier to dispose.