FIELD: metallurgy.
SUBSTANCE: invention refers to procedure for leaching precious metal from ore containing said precious metal. The procedure consists of three stages: leaching ore at presence of hydrochloric acid with production of soluble chloride of metal in a solution for leaching, in adding sulphur dioxide into the solution for leaching, in extracting metal sulphate or metal sulphite from the solution for leaching and in regenerating hydrochloric acid. As ore there can be used oxide ore of non-ferrous metal, such as oxide zinc ore, laterite nickel ore, such as saprolite or limonite, sulphide ore or titanium ore. Precious metal is chosen from a group including Zn, Cu, Ti, Al, Cr, Ni, Co, Mn, Fe, Pb, Na, K, Ca, metals of platinum group and gold. Precious metal or less precious metal, such as magnesium, can be a metal in composition of metal sulphate or metal sulphite. Regenerated hydrochloric acid is directed into a re-circulation system in the process of leaching.
EFFECT: increased efficiency of process.
45 cl, 36 dwg, 5 tbl
Title | Year | Author | Number |
---|---|---|---|
PROCEDURE FOR LEACHING VALUABLE METALS OUT OF ORE AT PRESENCE OF HYDROCHLORIC ACID | 2005 |
|
RU2423534C2 |
PROCEDURE FOR LEACHING AT PRESENCE OF HYDROCHLORIC ACID FOR REGENERATION OF VALUABLE METAL FROM ORE | 2006 |
|
RU2424332C2 |
RECOVERY OF NICKEL, COBALT AND OTHER BASE METALS MADE OF LATERITIC ORE WITH USAGE OF HEAP LEACHING AND PRODUCT, CONTAINING NICKEL, COBALT AND OTHER METALS AND RECEIVED FROM LATERITIC ORE | 2006 |
|
RU2355793C2 |
METHOD OF NICKEL RECOVERY FROM Ni-Fe-Mg LATERINE ORE WITH HIGH CONTENT OF MAGNESIUM | 1996 |
|
RU2149910C1 |
EXTRACTION METHOD OF NICKEL AND COBALT FROM SILICATE NICKEL-COBALT ORES | 2011 |
|
RU2465449C1 |
METHOD OF REPROCESSING OF THE MATERIALS CONTAINING MINERALS, IN WHICH NICKEL IS PRESENT IN PROTOXIDE FORM | 2006 |
|
RU2319754C1 |
PROCEDURE FOR COMPLEX PROCESSING NICKEL-COBALT RAW MATERIAL | 2009 |
|
RU2393251C1 |
EXTRACTION METHOD OF METALS, MAINLY NICKEL AND COBALT, FROM OXIDISED ORES | 2013 |
|
RU2568223C2 |
PROCEDURE FOR PROCESSING OXIDISED NICKEL-, COBALT-, IRON-, AND MAGNESIUM-CONTAINING ORE | 2009 |
|
RU2393250C1 |
METHOD FOR PRODUCING HIGH-PURE HYDRATED NICKEL SULFATE | 2019 |
|
RU2797855C2 |
Authors
Dates
2010-07-27—Published
2005-10-20—Filed