Pelletizing or granulating process

Details Pelletizing or granulating process Pelletizing or granulating process

1994-02-28

1995-11-21

Walsh, Donald P.

Powder metallurgy processes

Forming articles by uniting randomly associated metal particles

Powder pretreatment

419 62, 419 63, 419 65, 419 66, 423657, 423155, B22F 102, C01B 308

Patent

active

054684463

ABSTRACT:
The pelletisation or granulation of a material or mixture of materials the or at least one of which is reactive in a liquid to produce a gas is improved by treating the reactive material prior to final compaction to form a coating thereon of a substance which is less soluble in the liquid than the reactive material. The preferred reactive material is calcium hydride and the preferred coating is calcium carbonate with or without calcium hydroxide.

REFERENCES:
patent: 3674702 (1972-07-01), MacKenzie et al.
patent: 4013422 (1977-03-01), Spinner et al.
patent: 4055632 (1977-10-01), Hoffman et al.
patent: 4155712 (1979-05-01), Taschek
patent: 4292265 (1981-09-01), Ron et al.
patent: 4341651 (1982-07-01), Beckert et al.
patent: 4404170 (1983-09-01), Candy et al.
patent: 4572844 (1986-02-01), Inoue et al.

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