Method using selected carbons to react with Al2O and Al...

Details Method using selected carbons to react with Al2O and Al... Method using selected carbons to react with Al2O and Al...

2005-02-01

2005-02-01

Andrews, Melvyn (Department: 1742)

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

C075S010360, C075S674000, C423S247000, C423S439000

Reexamination Certificate

active

06849101

ABSTRACT:
In a method for recovering Al from an off-gas (3,4) produced during carbothermic reduction of aluminum utilizing at least one smelter (1,2), the off-gas (3,4) is directed to an enclosed reactor (5) which is fed a supply of wood charcoal (7) having a porosity of from about 50 vol. % to 85 vol. % and an average pore diameter of from about 0.05 μm to about 2.00 μm, where the wood charcoal (7) contacts the off-gas (3,4) to produce at least Al4C3(6), which is passed back to the smelter (1,2).

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patent: 1185435 (1985-04-01), None
FAO Forestry Department, Simple Technologies for Charcoal Making, FAO Forestry Paper 41, 1987, 7 pages, Rome, Italy.

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