Method for preparing dry-collected fume for use in metallurgical

Details Method for preparing dry-collected fume for use in metallurgical Method for preparing dry-collected fume for use in metallurgical

1975-07-01

1977-01-18

Ozaki, G.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 28, C22B 108

Patent

active

040037363

ABSTRACT:
A method for preparing strong, stable "green" balls of dry-collected iron-bearing fume, which contains not less than about 8% combined amount of lime (CaO) and magnesia (MgO). The fume is charged to a balling device where there is added to the fume a quantity of water equal to both the stoichiometric amount required to completely hydrate such lime and magnesia and to produce in the green balls a water content between about 7% - 12%. The residence time of the fume on the balling device is not less than about 8 minutes.

REFERENCES:
patent: 1994378 (1935-03-01), Williams
patent: 2173535 (1939-09-01), Francis
patent: 3169054 (1965-02-01), Werner
patent: 3318685 (1967-05-01), Handwerk
patent: 3652260 (1972-03-01), Azami
patent: 3770415 (1973-11-01), Carignani
patent: 3770416 (1973-11-01), Goksel
patent: 3851827 (1974-12-01), Carnignani
Cavaghan, N. J., et al.; Utilization of In Plant Fines; Journal of The Iron and Steel Industry June, 1970 pp. 538-542.
Jackson, A.; Fume Cleaning In Ajax Furnaces, Special Report 83, Report of the Proceedings of the Autumn General Meeting of the Iron and Steel Institute (1963).

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