PROCESS FOR THE DISSOLUTION OF METAL OXIDES FROM SIALLIC AND ALLIC ROCKS AND MINERALS, AS WELL AS FROM SILICATE INDUSTRIAL BY-PRODUCT AND WASTE MATERIALS

摘要

Process for extracting metal oxides, in particular magnesium oxide, iron oxide, potassium oxide and non-ferrous metal oxides from allite and sialite rocks, minerals and industrial products by leaching with acid or base, in which leaching is carried out in the presence of structure-loosening, chemically active additives.