Method of separating metal alloy particles

Details Method of separating metal alloy particles Method of separating metal alloy particles

1990-03-16

1991-10-29

Gorski, Joseph M.

Solid material comminution or disintegration

Processes

With classifying or separating of material

209212, 209222, 209225, 241 23, B02C 2310

Patent

active

050608711

ABSTRACT:
A method is described for separating a mixture of flat metal alloy particles in which the particles of one alloy are generally smaller and less conductive than the particles of another alloy, e.g. a scrap mixture of aluminum-lithium alloy and other wrought aluminum alloys. In this method, the scrap mixture is thermally pretreated and then crushed into relatively flat particles, such that the aluminum-lithium alloy is fragmented into smaller particle sizes than the otehr wrought alloys. These particles are then physically separated based on differences in particle size, density and/or electric conductivity. For instance, the separation may be done by an eddy current separator or a dense media separator.

REFERENCES:
patent: 3430870 (1969-03-01), Weston
patent: 3605243 (1971-09-01), Oster
patent: 4330090 (1982-05-01), Montagna et al.
patent: 4491473 (1985-01-01), Bowman et al.
B. C. Braam et al., "Recovery of Non-Ferrous Metals From Waste Using an Eddy Current Separator."

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