Process for decomposing hard metal scrap

Details Process for decomposing hard metal scrap Process for decomposing hard metal scrap

1979-05-14

1982-09-14

Tufariello, T.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

423 55, C25F 500, C01G 4100

Patent

active

043494234

ABSTRACT:
The process is principally based upon an electrochemical technique due to which the binding material for tungsten and cobalt is dissolved and from the solution under certain conditions cobalt or its composition is regained. From the undissolved material after electrolysis tungsten is disposed. By this improved method a very fast decomposition of the hard metal is obtained. Tungsten carbide scrap--a waste material from hard metal tools--can be a decomposed preferably by electrolysis as shown in FIGURE attached.

REFERENCES:
patent: 1261383 (1918-04-01), Hamilton
patent: 2704240 (1955-03-01), Avery
patent: 3151049 (1964-09-01), Hendry
patent: 3438730 (1969-04-01), Shwayder
patent: 3649487 (1972-03-01), Aue
patent: 3887680 (1975-06-01), MacInnis
patent: 4128463 (1978-12-01), Formanik
patent: 4140597 (1979-02-01), Kobayakawa

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