METHOD FOR DEVELOPING DEPOSITS OF POTASSIUM-MAGNESIUM AND ROCK SALTS Russian patent published in 1998 - IPC

FIELD: mining industry. SUBSTANCE: this relates to overall mining and chemical extraction and processing of potassium-magnesium and rock salts and can be used for accompanying recovery of gold. According to method, carried out are following operations: drilled are underground geological-prospecting bore-holes, taken out are bore and channel samples for gold in clay interlayers of thickness being equal to or exceeding minimal extracting thickness, separated are deposits of gold-bearing ores and their selected extraction is performed. Ores are processed by applying chlorine-containing solvents. Used for producing aforesaid chlorine-containing solvents is chlorine emitted in anode space of electrolyzer. Magnesium is produced in electrolyzer in result of subjecting dehydrated carnallite to electrolyzing process. Application of aforesaid method allows for increasing content of gold in primary raw material and for utilizing chlorine emitting in technological process for producing solvent. EFFECT: higher efficiency.