Treatment of gold bearing ore

Details Treatment of gold bearing ore Treatment of gold bearing ore

1993-04-23

1995-01-10

Andrews, Melvyn J.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ib metal

423 29, 423 47, C22B 1102

Patent

active

053805046

ABSTRACT:
The present invention relates to a process for roasting gold containing ore in which a flash furnace means is provided, in particular a gas suspension furnace for roasting the ore. Hot gas and the gold containing ore to be roasted are supplied to the furnace means, wherein the hot gas roasts the ore within the furnace means at temperatures between about 500.degree. C. and 700.degree. C. while the ore is suspended in the hot gas, after which the roasted ore is discharged from the furnace means along with the hot gas. In the apparatus of the present the ore to be calcined may optionally be preheated, prior to the ore entering the furnace means, by suspending the fresh ore in hot gas.

REFERENCES:
patent: 4626279 (1986-12-01), Bjornberg et al.
patent: 5123956 (1992-06-01), Fernandez et al.

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