| 摘要 |
FIELD: mining. ^ SUBSTANCE: invention refers to mining and can be implemented for underground leaching of non-ferrous metals, particularly, of nickel. According to the method of underground leaching of oxidised nickel ores, containing ferrous and magnesia ores, at first there is determined approximate profile of division between ferrous and magnesia ores. Injection and evacuation boreholes pass through an ore body; also the continuous part of a cased pump in evacuation boreholes is assembled in layers of ore with index of geo-chemical zonality exceeding 0.8. A perforated section of the cased pipe is installed lower; direct sulfuric acid leaching during not less, than 30 days and successive collection of productive solution is performed thereafter. ^ EFFECT: development of efficient method of underground leaching of non-ferrous metal ores. ^ 3 dwg |
