Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group ib metal
Patent
1983-09-07
1986-10-28
Carter, H. T.
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group ib metal
423 41, 423 45, 423 98, 423 99, 423109, 423148, 423150, 423DIG2, 423DIG16, C01G 310, C01G 906
Patent
active
046198148
ABSTRACT:
This invention relates to the development of a viable metallurgical process capable of treating low grade concentrates, bulk concentrates, dirty concentrates, or ore directly for the recovery of non-ferrous metals such as zinc, lead, copper, and precious metals and accordingly is significant to the development of massive fine grained sulphide ore bodies found throughout the world. The process involves the consecutive steps of sulphatizing roasting in a fluidized bed reactor, a two stage leach, metal recovery from solution by conventional processes such as electrowinning and precipitation, and recycling of residue wash waters and leach liquors containing high concentrations of iron and minor impurity elements to the roaster or a spray dryer for thermal decomposition. Simple and efficient rejection of iron from the circuit to residue as stable hematite is the net result of the recirculation and thermal decomposition. Recoveries of zinc and copper of greater than 90% for low grade ore and over 95% for concentrates have been obtained in pilot plant testing. Recoveries of lead, silver, gold of 98%, 90%, and 79% respectively are achievable.
REFERENCES:
patent: 1634100 (1927-06-01), Gepp et al.
patent: 2155119 (1939-04-01), Ebner
patent: 3053626 (1962-09-01), Patterson
patent: 3181944 (1965-05-01), Brook et al.
patent: 3230071 (1966-01-01), Marvin
patent: 3676107 (1972-07-01), Barnard et al.
patent: 3745207 (1973-07-01), Hansen
patent: 4071612 (1978-01-01), Weyer et al.
patent: 4224122 (1980-09-01), Wilkomirsky et al.
patent: 4317803 (1982-03-01), Wilkomirsky et al.
patent: 4415540 (1983-11-01), Wilkomirsky et al.
G. R. Smithson, Jr., and J. E. Hanway, Jr., Trans. of the Metallurgical Soc. of AIME, vol. 224, 827-834, Aug. 1967.
G. Steinveit, AIME World Symposium of Mining & Metallurgy of Lead and Zinc, vol. II, 223-246 (1970).
E. Moriyama and Y. Yamamoto, AIME World Symposium of Mining & Metallurgy of Lead and Zinc, vol. II, 199-222 (1970).
Boorman Roy S.
Salter Robert S.
Wilkomirsky Igor A. E.
Carter H. T.
Provincial Holdings Ltd.
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