Passivating metallic cuttings and turnings

Details Passivating metallic cuttings and turnings Passivating metallic cuttings and turnings

1976-04-28

1978-02-21

Kendall, Ralph S.

Coating processes

Particles, flakes, or granules coated or encapsulated

Inorganic base

427242, 428403, 428921, 148 6, C23F 902

Patent

active

040753700

ABSTRACT:
A method of passivating iron-containing cuttings and turnings to prevent overheating thereof during storage and transportation, wherein the cuttings and turnings are fed through a rotating tumbler drum while being mixed with an aqueous slurry of calcium oxide or hydroxide, the tumbling being continued until the cuttings or turnings are thoroughly coated with the slurry. In a preferred embodiment, the cuttings and turnings are passed through a tumbling drum continuously, with the slurry being sprayed onto them as they enter the drum.

REFERENCES:
patent: 2639269 (1953-05-01), Dube
patent: 2758039 (1956-08-01), Barbour
patent: 3317307 (1967-05-01), Wise et al.
patent: 3690930 (1972-09-01), Mueller et al.
patent: 3869894 (1975-03-01), Meyer et al.

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