In situ roasting and leaching of sulfide minerals

Details In situ roasting and leaching of sulfide minerals In situ roasting and leaching of sulfide minerals

1980-08-12

1983-05-03

Pate, III, William F.

Mining or in situ disintegration of hard material

In situ conversion of solid to fluid

Dissolving or chemical reaction

166259, 75 7, E21B 4328, E21C 4114

Patent

active

043818730

ABSTRACT:
There is provided a process for recovery of metal values from an ore body containing sulfide minerals. The ore body is fractured for increasing its permeability. The fractured ore body is then roasted in situ to increase the permeability and porosity of ore body to liquid leach solutions. The roasted sulfide minerals in the ore body are thereafter contacted with a leach solution to extract metal values therefrom and the extracted metal values are recovered.

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patent: 3815957 (1974-06-01), Spedden
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patent: 3834760 (1974-09-01), Spedden
patent: 3841705 (1974-10-01), Girard
patent: 3881774 (1975-05-01), Van Poolen
patent: 3951458 (1976-04-01), Cathles
patent: 4135918 (1977-01-01), Ettel
patent: 4168217 (1979-09-01), Dalvi
Marathon Technical Disclosure, "Sulfur Dioxide From In Situ Burning of Low Grade Sulfide Deposit", vol. VII, p. 4, 12/70.

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