Metallurgical apparatus – Means for treating ores or for extracting metals
Patent
1988-11-21
1991-02-12
Andrews, Melvyn J.
Metallurgical apparatus
Means for treating ores or for extracting metals
209158, 4236585, C22B 304
Patent
active
049918249
ABSTRACT:
A method and apparatus for treating mineral-bearing ores and, more particularly, for treating ores containing precious metals, base metals and the like values by providing a means to extract the metal or other values from a particulated ore by classifying the ore to separate values from the gangue, and by continuously chemically leaching the said values from the ore. In accordance with an embodiment of the invention, particulated ore is fluidized and intermittently moved through a tank to classify the ore particles into strata according to size, shape and density to beneficiate values, either heavier or lighter than the gangue, for recovery of concentrated values. In accordance with another embodiment of the present invention, crushed or ground ore is moved through a vat leaching jig in such a manner as to cause the heavier metal-laden or other values-laden particles or larger particles to differentially settle to the bottom of the apparatus, which can then be extracted separately and wholly from the finer values such as gold or precious metal particles which may be chemically leached from the ore and recovered form the lixiviant.
REFERENCES:
patent: 2420180 (1947-05-01), Laughlin
patent: 3777003 (1974-12-01), Mitterer
patent: 4360500 (1982-11-01), Fly
Andrews Melvyn J.
Fors Arne I.
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