Method and apparatus for removing plated metal from steel sheet

Details Method and apparatus for removing plated metal from steel sheet Method and apparatus for removing plated metal from steel sheet

1993-11-23

1994-09-27

Andrews, Melvyn J.

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

75403, 266149, 266901, C22B 700

Patent

active

053504380

ABSTRACT:
Metal plated steel sheet scraps are heated to a temperature in the range of about 200.degree. C.-500.degree. C. so that organic material adhered to the scraps is evaporated and removed. Then, the scraps from which organic material has been removed are heated to a temperature in the range of about 500.degree. C.-950.degree. C. so that the plated metal, for example zinc or aluminum, is evaporated. The evaporated metal flows to a retrieving device where the evaporated metal is condensed and retrieved.

REFERENCES:
patent: 3476372 (1969-11-01), Tezuka
patent: 3529067 (1970-09-01), Grott
patent: 3762911 (1973-10-01), Von der Crone et al.
patent: 4227922 (1980-10-01), Laws et al.
patent: 5205857 (1993-04-01), Yokoyama
75th. Steelmaking 51st. Ironmaking and 10th. Process Technology Division Conferences--Iron and Steel Society--April 5-8, 1992--Removal of zinc by Baking of Automotive Body Scrap--pages 264-267.

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