Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1983-10-12
1984-10-09
Rosenberg, Peter D.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75 60, C22B 502
Patent
active
044759479
ABSTRACT:
The present invention relates to a method and a means for recovering heat from dust-bearing gases produced in the suspension smelting of sulphide concentrates. In order to reduce the tendency of the dusts to create accretions in the waste heat boiler (5), to the dust-bearing gases produced in the suspension smelting process (1) and/or to the slag is admixed a cooler, partly reactive fluid (12) prior to bringing them into indirect heat exchange contact in the waste heat boiler (5).
In the combination of suspension smelting furnace (1) and waste heat boiler (5) connected thereafter, as taught by the invention, the vertical radiation section (6) of the waste heat boiler (6) has been connected at its lower end, either directly or by means of a short water-cooled connecting part (9), to the settler (3) of the suspension smelting furnace and at the top end by a likewise vertical screen section (10) to a substantially horizontal convection section (7), in which connection adjacent to the juncture of the settler (3) and the radiation section (6) or its connecting part (9) are provided members (12) for supplying a cooler substance into the dust-bearing gases flowing from the settler (3) to the radiation section and/or into the slag in the settler.
REFERENCES:
patent: 4218241 (1980-08-01), Hegemann
patent: 4308057 (1981-12-01), Ono
patent: 4407672 (1983-10-01), Deuschle
patent: 4415142 (1983-11-01), Hegemann
Outokumpu Oy
Rosenberg Peter D.
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