Process of producing briquettes to be charged to zinc-producing

Details Process of producing briquettes to be charged to zinc-producing Process of producing briquettes to be charged to zinc-producing

1984-01-13

1985-06-25

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 7, 75 9, 75 77, B22F 102

Patent

active

045252076

ABSTRACT:
Calcine which has been obtained by roasting in a fluidized bed and contains zinc oxide is briquetted at elevated temperatures. To produce briquettes having desirable properties for processing in a zinc-producing shaft furnace, the calcine is provided with metallic lead and/or lead oxide in an amount corresponding to at least 3% lead, non-caking coal having a low content of volatile constituents is admixed to the calcine, the Pb:C weight ratio is adjusted to at least 1, and the mixture is briquetted at a compacting temperature of 250.degree. to 470.degree. C. and under an applied pressure amounting to 4 to 20 metric tons per centimeter or roll width when said pressure is dynamically measured.

REFERENCES:
patent: 3523786 (1970-08-01), Loosemore et al.
patent: 3946098 (1976-03-01), Harris
patent: 4231791 (1980-11-01), Charles
patent: 4274878 (1981-06-01), Charles
Morgan & Lumsden, "Zinc-Blast Furnace Operation", Journal of Metals (1959).

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