Method of recovering metal carbides

Details Method of recovering metal carbides Method of recovering metal carbides

1980-04-17

1982-09-07

Hunt, Brooks H.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

75204, 75200, 75211, 423 53, 423 55, 423440, 209208, C22C 2900

Patent

active

043482317

ABSTRACT:
Selected portions of metal carbide are recovered from scrap material containing pieces of cemented metal carbide having various compositions of metal carbide distributed in a matrix material. The scrap material is treated with a suitable liquid for a sufficient period of time to dissolve the matrix material and form a piece of matrix depleted metal carbide which is introduced as a feed into a ferrofluid material. A magnetic field is passed through the ferrofluid for positioning pieces of metal carbide of the type having a heavier density spaced from pieces of metal carbide of a lighter density. The separated portions of matrix depleted metal carbide are collected to produce metal carbide powder which may be further reprocessed to produce a desired cemented metal carbide.

REFERENCES:
patent: 2848313 (1958-08-01), Takahashi et al.
patent: 3438730 (1969-04-01), Shwayder
patent: 3483969 (1969-12-01), Rosensweig
patent: 3635674 (1972-01-01), Shwayder
patent: 3947555 (1976-03-01), MacInnis et al.

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