Methods of processing aluminium dross and aluminium dross residu

Details Methods of processing aluminium dross and aluminium dross residu Methods of processing aluminium dross and aluminium dross residu

1996-03-22

1998-02-10

Andrews, Melvyn

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

423600, C01F 716

Patent

active

057164266

ABSTRACT:
The processing of aluminium dross containing Al and Al.sub.2 O.sub.3 originating from aluminium production, comprises the steps of separating aluminium from the dross to produce a dross residue and reacting the dross residue at a temperature above 1360.degree. C. with a calcium-oxygen compound to form calcium aluminate as an at least partially melted material. To obtain a product specially suitable for use in steel-making, the calcium aluminate is rapidly cooled to form a glassy solid product. The two steps may be performed in the same vessel, which has a suitable refractory lining.

REFERENCES:
patent: 5135565 (1992-08-01), Gens
patent: 5385601 (1995-01-01), Kemeny et al.
"Market Opportunities for the Alcan Plasma Dross Residues," by Raymond Breault et al, Light Metals 1995 Month Unavail.

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