Method for introducing a granular ore into a roasting kiln

Details Method for introducing a granular ore into a roasting kiln Method for introducing a granular ore into a roasting kiln

2005-07-12

2005-07-12

Andrews, Melvyn (Department: 1742)

Specialized metallurgical processes, compositions for use therei

Processes

Consolidating metalliferous material by agglomerating,...

C075S444000, C075S637000, C075S654000, C266S172000

Reexamination Certificate

active

06916357

ABSTRACT:
Granular ore or ore concentrate is charged into a furnace for calcining the ore at temperatures of 400 to 1050° C., the ore forming a stationary fluidized bed in the furnace. The ore is thrown onto the fluidized bed through an opening in the furnace housing disposed above the fluidized bed, the ore being accelerated by blades of a rotating impeller. The impeller is disposed outside the furnace in the vicinity of the opening of the housing. Preferably, the rotational speed of the impeller is variable, and the impeller is movable and/or pivotable with respect to the furnace.

REFERENCES:
patent: RE4898 (1872-05-01), Whelpley et al.
patent: 3610182 (1971-10-01), Stockman
patent: 4144051 (1979-03-01), Rahn et al.
patent: 4678508 (1987-07-01), Saeki et al.
patent: 58002141 (1983-01-01), None

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