Mechanically stirred furnace for pyrometallurgical operations an

Details Mechanically stirred furnace for pyrometallurgical operations an Mechanically stirred furnace for pyrometallurgical operations an

1976-02-23

1977-11-29

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

13 9R, 75 12, 75 61, C22B 902, C21C 552, H05B 718

Patent

active

040604098

ABSTRACT:
The present specification discloses a pyrometallurgical system for maintaining a material in a molten state, the system comprising a vessel for molten material, the vessel conceptually dividable into a number of substantially uniform cells. A mechanical stirrer is provided for each such cell and is centered within the cell. The stirrers are sized and driven at a rate so as to promote a uniform temperature and composition of the molten material and improved heat transfer between, and blending of, various constituents of molten material, while producing minimal erosion of the conventional refractory lining of the vessel. Preferably, adjacent pairs of stirrers are driven with opposite rotational senses, thereby assuring reinforcing flow patterns at the cell boundaries. Heating means (e.g., power electrodes) are provided at locations which do not substantially interfere with the flow patterns generated by the array of mechanical stirrers.

REFERENCES:
patent: 3160497 (1964-12-01), Loung
patent: 3567204 (1971-03-01), Ando
patent: 3773498 (1973-11-01), Eichbaum
patent: 3824095 (1974-07-01), Ando

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