Process for the preparation of alumino-silicate granulates

Details Process for the preparation of alumino-silicate granulates Process for the preparation of alumino-silicate granulates

1979-06-27

1981-02-10

Albrecht, Dennis L.

Bleaching and dyeing; fluid treatment and chemical modification

Cleaning or laundering

Removing formation impurities from artifical fiber

23313R, 23313AS, 134 10, 252135, 252140, 25217425, 252179, 252448, 252455Z, 252477R, B01J 3914, C01B 3328, C02F 142, C11D 312

Patent

active

042499038

ABSTRACT:
A process for the preparation of a cation-exchanging alkali metal aluminosilicate granulate having a particle size of from 0.05 to 1 mm comprising (a) charging a finely-divided, crystalline water-containing alkali metal aluminosilicate powder having a calcium binding power of from 50 to 200 mg CaO/gm of anhydrous aluminosilicate and a particle size of less than 30.mu. into a conventional granulator, (b) adding thereto (i) m moles of SiO.sub.2 as an aqueous alkali metal silicate solution or an aqueous silicic acid sol, and (ii) n mols of Al.sub.2 O.sub.3 as an acidic hydrolyzing aluminum salt and/or alkali metal aluminate powder and/or an aqueous alkali metal aluminate solution, (c) mixing until the moisture is uniformly absorbed and a granulate with a particle size of 0.05 to 1 mm is formed, and (d) drying said granulate at 80.degree. to 150.degree. C.

REFERENCES:
patent: 3356450 (1967-12-01), Heinze
patent: 3773690 (1973-11-01), Heinze et al.
patent: 3795631 (1974-03-01), Heinze et al.
patent: 4058586 (1977-11-01), Chi
patent: 4120653 (1978-10-01), Smolka
patent: 4121903 (1978-10-01), Smolka

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