Production of articles from minerals

Details Production of articles from minerals Production of articles from minerals

1982-06-09

1986-08-26

Van Balen, William J.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

106 74, 209 2, 428402, B32B 1900

Patent

active

046083030

ABSTRACT:
Vermiculite ore is contacted with an aqueous solution with at least one salt of sodium, lithium or an organosubstituted ammonium cation followed by aqueous washing so that the ore swells. The swollen vermiculite in aqueous suspension is subjected to a shearing action until a suspension containing vermiculite particles having dimensions less than 50 microns is produced with elimination from the suspension of all particles having a diameter larger than 50 microns. Water can then be removed from the suspension.

REFERENCES:
patent: 3076546 (1963-02-01), Ziegler et al.
patent: 3356611 (1967-12-01), Walker et al.
patent: 3455850 (1969-07-01), Saunders
patent: 3466222 (1969-09-01), Curtis
patent: 4130687 (1978-12-01), Ballard et al.

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