Method for processing potash raw salts containing kieserite

摘要

Treating kieserite containing milled potassium crude salts comprises intensively mixing the milled potassium crude salts with a conditioning agent containing a combination of an aromatic carboxylic acid or its derivatives, an ammonium salt of the aromatic carboxylic acid and linear 10-15C-fatty alcohol, subsequently triboelectrically charging the mixture at a relative humidity of 1-10% and single or multi-level electrostatically separating the mixture into the kieserite- and potash crude- fraction.