Process for leaching sand or other particulate material

Details Process for leaching sand or other particulate material Process for leaching sand or other particulate material

1975-07-10

1977-08-16

Vertiz, O. R.

Chemistry of inorganic compounds

Silicon or compound thereof

Oxygen containing

23272R, 75101R, 423 1, 4236585, C01B 3312

Patent

active

040426718

ABSTRACT:
A process for leaching sand to remove iron and other undesirable components in which the sand is treated with a series of leaching solutions which increase in acid concentration to about the midpoint of the process followed by decrease in concentration to a final wash water with the initial drainage from the sand mass being discarded while subsequent drainages are re-used for subsequent leaching operations with the addition of leaching acid to some of the drainage to provide the desired acid concentration.

REFERENCES:
patent: 1084600 (1914-01-01), Best
patent: 1897638 (1933-02-01), Hubbell
patent: 1957579 (1934-05-01), Crew
patent: 1983271 (1934-12-01), Earle
patent: 2119105 (1938-05-01), Hutchinson et al.
patent: 2169122 (1939-08-01), Crew
patent: 2233695 (1941-03-01), Crew
patent: 2306021 (1942-12-01), Knowles et al.
patent: 2952516 (1960-09-01), Gross
patent: 3880981 (1975-04-01), Garingarao et al.

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