Metal removal apparatus and method

Details Metal removal apparatus and method Metal removal apparatus and method

1981-05-21

1982-05-25

Hearn, Brian E.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

266170, 428313, 428407, 428461, C22B 500

Patent

active

043314724

ABSTRACT:
A first metal is removed from solutions such as polluted water by contacting the solution with a metallic exchange medium. The metallic exchange medium comprises a plurality of buoyant elements, each comprising a substrate coated with a second metal sufficiently reactive to undergo an electrochemical exchange reaction with the first metal. The substrate can be expanded polystyrene beads and the metal can be iron such as sponge iron of small particle size.

REFERENCES:
patent: 1568464 (1926-01-01), Neill
patent: 1617353 (1927-02-01), Snelling
patent: 3369801 (1965-11-01), Hartman
patent: 3640787 (1972-02-01), Heller
patent: 3692291 (1972-09-01), MacKay
patent: 4035181 (1977-07-01), Fisch
patent: 4039297 (1977-08-01), Takenaka
patent: 4156604 (1979-05-01), Fisch et al.

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