Process for simultaneously processing of used metal and/or metal

Details Process for simultaneously processing of used metal and/or metal Process for simultaneously processing of used metal and/or metal

1980-09-15

1982-03-02

Hearn, Brian E.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

423491, 423497, 423493, 423494, 423481, 201 25, 201 15, 201 30, C10B 4700, C01B 900

Patent

active

043178006

ABSTRACT:
A process for reducing environmental pollution resulting from disposal of waste containing halogenated hydrocarbons by simultaneous treatment with used metal and/or metal scrap at elevated temperatures. The halogenated hydrocarbons are pyrolyzed and the resulting hydrogen halide containing gas is brought into contact with the used metal and/or metal scrap at elevated temperatures so as to form metal halogenides that are volatile under the conditions applied. The volatile metal halogenides are largely separated from the gaseous mixture formed, and at least part of the remaining gaseous mixture and/or hydrocarbon residue is used as fuel to maintain the required temperature. The waste feed compositions and process conditions can be chosen to effect separation between various metals by selective halogenation and condensation, and substantially all of the hydrogen halide can be tied up and recovered as metal halogenides.

REFERENCES:
patent: 2946668 (1972-02-01), Richelson
patent: 3615357 (1971-10-01), Wain er
patent: 3639111 (1972-02-01), Brink
patent: 3935293 (1976-01-01), Tsirigotis
patent: 4052265 (1977-10-01), Kemp
patent: 4222823 (1980-09-01), Wickbold
patent: 4234388 (1980-11-01), Mallan

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