Process for the simultaneous treatment of dust, sludge and steel

Details Process for the simultaneous treatment of dust, sludge and steel Process for the simultaneous treatment of dust, sludge and steel

1986-10-14

1987-12-08

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 3, 75 24, 75 25, C22B 100

Patent

active

047116625

ABSTRACT:
The present invention relates to a process for the simultaneous treatment of dust, sludge and steel slag generated in the steel-manufacturing step, characterized by using a specified amount of a silicate mineral containing water of crystallization as a modifier. This process comprises adding a silicate mineral containing water of crystallizaiton to molten steel slag having a high temperature to carry out the modification of the slag, while stirring the slag by the gas generated by the decomposition of the silicate mineral containing water of crystallization, According to the process, dust, sludge and steel slag can be treated simultaneously to give an innoxious material which can be utilized satisfactorily.

REFERENCES:
patent: 3169054 (1965-02-01), Werner
patent: 3326670 (1967-06-01), Bratton
patent: 3756804 (1973-09-01), Stevenson
patent: 4102675 (1978-07-01), Miyashita
patent: 4110107 (1978-08-01), Paulson
patent: 4396423 (1983-08-01), Stephens
patent: 4612041 (1986-09-01), Matsuoka

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