Method of treating wet-washed silica dust

Details Method of treating wet-washed silica dust Method of treating wet-washed silica dust

1977-04-22

1978-09-26

Wyse, Thomas G.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Responsive to fluid flow

55 89, 210 67, 210 71, C02C 506

Patent

active

041168305

ABSTRACT:
A method of treating the silica dust recovered from waste gasses by wet-washing of the gasses is disclosed. The sludge material is charged to a rotary kiln at a temperature of 800.degree. - 1,400.degree. C. in the presence of an oxidizing or reducing agent whereby the sludge is converted to pellets while phenols and cyanides are simultaneously treated.

REFERENCES:
patent: 2134679 (1938-11-01), Allen
patent: 2401924 (1946-06-01), Goetz
patent: 2863727 (1958-12-01), Thornhill et al.
patent: 3272740 (1966-09-01), Gitchel et al.
patent: 3320906 (1967-05-01), Domahidy
patent: 3442498 (1969-05-01), Davis
patent: 3490204 (1970-01-01), Kalika
patent: 3962080 (1976-06-01), Dulin et al.
patent: 4036606 (1977-07-01), Zimmermann et al.

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