IT1033725B - Hydro-metallurgical extraction of non-ferrous metals - from prim. and sec. ores, by -prods and ind wastes - Google Patents
Hydro-metallurgical extraction of non-ferrous metals - from prim. and sec. ores, by -prods and ind wastesInfo
- Publication number
- IT1033725B IT1033725B IT483675A IT483675A IT1033725B IT 1033725 B IT1033725 B IT 1033725B IT 483675 A IT483675 A IT 483675A IT 483675 A IT483675 A IT 483675A IT 1033725 B IT1033725 B IT 1033725B
- Authority
- IT
- Italy
- Prior art keywords
- leaching
- soln
- ores
- contg
- prods
- Prior art date
Links
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
Non-ferrous metals e.g. Cu, Ni, Zn, Co, Sn, U and partic. Au, and Pt metals are extracted from prim. and sec. ores, concentrates, Mn-contg. ores, thermal leaching sediments, metallurgical inter and by-prods, and ind. wastes by leaching the matl in particulate form with a soln. composed of Mg chloride and/or other alkali chlorides contg. 50-350 g NaCl/l, and nitric acid of about 3-90 wt.% concn., and at a temp. 20-110 degrees C. The leaching process is carried out for a period of 30 min to 5 h, and pref. by mechanically and/or pneumatically stirring the mixt. The leaching soln. is made up by mixing the respective substances corresponding to the required concn. of H+-, Cl--, and NO3- ions, and by using dosing units and instruments for feeding the addns to the leaching unit. Pref. the soln. is made up by using waste nitriding acids, or natural salt solns., seawater or suitable industrial waste waters contg. salt. The waste leaching soln., which is regenerated, and the steam condensates are recycled.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT483675A IT1033725B (en) | 1975-07-22 | 1975-07-22 | Hydro-metallurgical extraction of non-ferrous metals - from prim. and sec. ores, by -prods and ind wastes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT483675A IT1033725B (en) | 1975-07-22 | 1975-07-22 | Hydro-metallurgical extraction of non-ferrous metals - from prim. and sec. ores, by -prods and ind wastes |
Publications (1)
Publication Number | Publication Date |
---|---|
IT1033725B true IT1033725B (en) | 1979-08-10 |
Family
ID=11114684
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT483675A IT1033725B (en) | 1975-07-22 | 1975-07-22 | Hydro-metallurgical extraction of non-ferrous metals - from prim. and sec. ores, by -prods and ind wastes |
Country Status (1)
Country | Link |
---|---|
IT (1) | IT1033725B (en) |
-
1975
- 1975-07-22 IT IT483675A patent/IT1033725B/en active
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