Method for converting into a non-polluting particulate product t

Details Method for converting into a non-polluting particulate product t Method for converting into a non-polluting particulate product t

1979-09-14

1981-09-29

Straub, Gary P.

Compositions: coating or plastic

Coating or plastic compositions

Proteinaceous material containing

423555, 423558, 423DIG2, 106118, 106900, C04B 1100, C04B 734, C01F 1146, C01G 4114

Patent

active

042920850

ABSTRACT:
Ferrous sulphate heptahydrate obtained as a by-product of the production of titanium dioxide by the sulphate process is converted into a non-polluting, free-flowing particulate neutralization product by contacting said sulphate with calcium hydroxide as a neutralizing agent in a molar ratio between said neutralizing agent and said ferrous sulphate of at least 1:1, and reacting the resulting mixture under agitation at a temperature not exceeding 60.degree. C. and for a contact time not exceeding five minutes.

REFERENCES:
patent: 2165344 (1939-07-01), Colton
patent: 2184271 (1939-12-01), Colton
patent: 2240254 (1941-04-01), Colton
patent: 2316039 (1963-04-01), Wilson
patent: 4118243 (1978-10-01), Sandesara

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