Harry V Makar

US Patent:

43300901, May 18, 1982

Filed:

Apr 14, 1980

Appl. No.:

6/140380

Inventors:

Dominic Montagna - Baltimore MD
Harry V. Makar - Ellicott City MD

Assignee:

The United States of America as represented by the Secretary of the
Interior - Washington DC

International Classification:

B02C 1912

US Classification:

241 14

Abstract:

A method of separating wrought and cast aluminum from a scrap mixture containing the two is disclosed. In this method, the scrap mixture is first heated to a temperature above the solidus temperature of the cast aluminum scrap. At this temperature, the scrap mixture is crushed thereby causing the cast aluminum to fragmentize into small pieces while merely causing flattening of the wrought aluminum. By using an appropriately sized screen, the cast aluminum fragments can then be separated from the wrought aluminum.