Bottom structure for a smelting furnace
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United States of America Patent
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Feb 22, 2005
Grant Date -
Sep 18, 2003
app pub date -
Feb 14, 2003
filing date -
Aug 18, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a bottom structure of a suspension smelting furnace to be used in a smelting furnace (1), in the reaction space (2) whereof of sulfidic raw material containing metal, such as copper, nickel or lead, is smelted in the presence of an oxygen-bearing gas and slag-forming agent, in order to render the metal in a form that is advantageous for further treatment, and where the created molten phases (5, 6) are settled onto the bottom (3) of the smelting furnace in order to separate the molten phases form each other, when the temperature of the molten phases is within the range 1150-1450.degree. C. According to the invention, the bottom structure includes at least one arched lining layer (7) inclined in the longitudinal direction of the smelting furnace, so that the temperature on the surface (89 that is opposite to the surface that gets into contact with the molten phase is below 800.degree. C.
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