Method for extraction of metals and non-metals from minerals, in

Details Method for extraction of metals and non-metals from minerals, in Method for extraction of metals and non-metals from minerals, in

1996-10-25

1999-05-25

Andrews, Melvyn

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

75658, 75669, 75694, 75961, 423108, C21B 1308

Patent

active

059066717

ABSTRACT:
A method for separation and recovery of metals and metal oxides from industrial minerals and waste materials containing zinc, lead, cadmium, arsenic, iron, mercury and selenium. The metals and metal oxides in dust form are mixed with a reducing agent and additives, agglomerated, heated above 800.degree. C., and contacted with a flow of inert, reducing or slightly oxidizing gases to volatilize the metals and metal oxides for recovering separate from solid residual product.

REFERENCES:
patent: 5496392 (1996-03-01), Sims et al.

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