Metallurgical apparatus – Means for extracting and refining metal – With separate refining zone
Patent
1976-07-08
1978-05-09
Lake, Roy
Metallurgical apparatus
Means for extracting and refining metal
With separate refining zone
266161, C22B 102
Patent
active
040883108
ABSTRACT:
A suspension smelting furnace is disclosed for the suspension smelting of finely-grained oxide or sulfide ores and concentrates, and provided with a horizontal lower furnace to which have been connected the lower ends of at least one vertical suspension reaction zone and rising flow zone, with devices at the upper end of the suspension reaction zone for the production of a suspension of finely-grained oxide and sulfide ores or concentrates with air and oxygen, and for feeding this suspension downwards in the reaction zone at the lower end of which there are optionally means for the sulfidization or reduction of the suspension, and in the lower furnace under the suspension reaction zone there is the main smelt reaction zone in which the bulk of the suspension dissolves vertically in the smelt accumulated in the lower furnace main reaction zone, and in the rising-flow zone there are devices for removing the remaining suspension at its upper end. In the lower furnace, between the main smelt reaction zone and the rising-flow zone, there is also a secondary smelt reaction zone in which the residual suspension may at least partially dissolve in smelt before essentially all undissolved residual suspension is fed into the rising-flow zone, and in the lower furnace there is also a separate smelt settling zone communicating at least through the smelt with the main and secondary smelt reaction zones for the separation of slag from matte and metal and provided with devices for removing slag, metal and matte from the lower furnace.
REFERENCES:
patent: 3554515 (1971-01-01), Tonooka et al.
patent: 3790366 (1974-02-01), Bryk et al.
Aaltonen Olavi A.
Harkki Seppo U.
Kaasila Kauko J.
Makipirtti Simo A.
Malmstrom Rolf E.
Bell Paul A.
Lake Roy
Outokumpu Oy
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