Method for treating waste pickle liquor

Details Method for treating waste pickle liquor Method for treating waste pickle liquor

1992-07-10

1994-09-06

Hruskoci, Peter A.

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210735, 210912, 210913, 423DIG1, 423DIG2, C02F 152, B01D 2101

Patent

active

053445724

ABSTRACT:
A method for treating waste pickle liquor solution comprising the steps of (a) adding a flocculating agent to the pickle liquor solution; (b) allowing at least some of the silica in the pickle liquor to begin to flocculate; (c) again adding a flocculating agent to the pickle liquor solution; (d) allowing the floccules containing silica formed in step (b) to increase in size; and (e) physically separating floccules formed in step (d) from the pickle liquor solution.

REFERENCES:
patent: 2692229 (1954-10-01), Heise et al.
patent: 3087890 (1963-04-01), Pye
patent: 3377274 (1968-04-01), Burke et al.
patent: 3617559 (1971-11-01), Cywin
patent: 3617568 (1971-11-01), Ries
patent: 4342653 (1982-08-01), Halverson
patent: 4569768 (1986-02-01), McKinley
patent: 4758353 (1988-07-01), Spence et al.

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