Situ method for producing hydrosulfite bleach and use thereof

Details Situ method for producing hydrosulfite bleach and use thereof Situ method for producing hydrosulfite bleach and use thereof

1994-03-14

1995-02-21

Straub, Gary P.

Compositions: ceramic

Ceramic compositions

Clay containing

106486, 106488, 25218822, 423515, C04B 3302

Patent

active

053915267

ABSTRACT:
A process for reacting metallic iron with sulfur dioxide (SO.sub.2) gas in the presence of water and bleachable matter, especially iron-contaminated kaolin clay, whereby the kaolin or the like is bleached in situ and the viscosity of the kaolin is less than it would be if bleached in a conventional manner.

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patent: 3393082 (1968-07-01), Lyons et al.
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patent: 3853984 (1974-12-01), Price et al.
patent: 4076795 (1978-02-01), Tiethof
patent: 4105466 (1978-08-01), Kunkle et al.
patent: 4157980 (1979-06-01), Thiethof
patent: 4919755 (1990-04-01), Mansson
patent: 5122279 (1992-06-01), Guess
patent: 5145814 (1992-09-01), Willis et al.

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