Solid material comminution or disintegration – Processes – Selective or differential comminution of mixed or bonded solids
Patent
1978-05-08
1978-11-21
Custer, Jr., Granville Y.
Solid material comminution or disintegration
Processes
Selective or differential comminution of mixed or bonded solids
241 24, 241 29, B02C 2314
Patent
active
041266730
ABSTRACT:
The invention relates to the recovering of free metal entrained in dross or skimmings obtained from melts of aluminum and aluminum based alloys wherein the dross has been partially prepared by prior art preparation processes. The invention is directed to the cleaning and preparation of the dross by the more effective removal of substantial portions of the oxide coatings on the dross. This results in the recovery of a significantly higher proportion of the free metal contained in the dross than is recovered using prior art cleaning and recovery processes. The dross, as partially processed by prior art methods, is sequentially fed through selected mechanical rolling and milling stages so as to separate aluminum oxide dust and aluminum concentrates from one another. The aluminum concentrates may be utilized in conventional furnace recovery methods to produce aluminum ingot or may be further processed through selected stages to produce high quality aluminum pellets.
REFERENCES:
patent: 1713507 (1929-05-01), Ammon
patent: 1841355 (1932-01-01), Bowen
patent: 2047345 (1936-07-01), Weis
patent: 2877954 (1959-03-01), Myers
patent: 2971703 (1961-02-01), Rath
patent: 3207304 (1965-09-01), Thom
patent: 3367584 (1968-02-01), Steinberg
patent: 3765881 (1973-10-01), Scholpp
patent: 3770424 (1973-11-01), Floyd et al.
patent: 3912174 (1975-10-01), Karpinski et al.
patent: 3999980 (1976-12-01), Montagna
patent: 4046323 (1977-09-01), McKerrow et al.
Garst et al., The Recovery of Metal and other Valuable Products From Aluminum Dross, Bur. of Mines Report of Investigations 3874, pp. 1-6, (1946).
Perry's Chemical Handbook, Fourth Ed., pp. 8-45 (1963).
Cromwell Metals, Inc.
Custer, Jr. Granville Y.
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