Method of electric smelting to matte in situ

Details Method of electric smelting to matte in situ Method of electric smelting to matte in situ

1984-10-12

1986-04-01

Suchfield, George A.

Mining or in situ disintegration of hard material

In situ conversion of solid to fluid

Melted material recovered

299 4, 299 8, 299 14, 166248, E21C 4114

Patent

active

045793913

ABSTRACT:
A method of extraction of metallic sulfides (Matte) from an ore deposit in situ. The contained sulfides are smelted by resistor induced heat creating a matte containing precious metals, including, but not limited to, platinum-group metals and gold and silver (as well as copper, nickel, iron, sulfur, etc). The heavier portion of the bath (matte) settles to the bottom and the slag rises to the top. Further smelting is controlled by positioning of the electrode pairs in the bath, thus regulating heat generation by modulation of the resistance between said electrodes. Placement of the electrodes in cased drill holes strategically placed to intersect and penetrate the ore-bearing horizons results in extraction of the valuable metals as matte. The matte can be recovered either as a liquid, or, after cooling, as a solid.

REFERENCES:
patent: 1759456 (1930-05-01), Hofseth
patent: 1993641 (1935-03-01), Aarts et al.
patent: 2761829 (1956-09-01), Dolloff
patent: 2953353 (1960-09-01), Allen
patent: 3254921 (1966-06-01), Halsey
patent: 3988036 (1976-10-01), Fisher et al.

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