Flash smelting furnace, flash smelting furnace operation method, and metal smelting method

Abstract

To reduce risks associated with an increase of the charging proportion of a metal-based recycled raw material. A flash smelting furnace that separates a high temperature molten material produced by causing a raw material to react with oxygen in a reaction shaft 2 into a matte layer 3a containing matte which is a sulfide of a predetermined metal and a slag layer 3b present on the matte layer on a furnace bottom surface of a settler 3 includes: a predetermined slope area S2 provided on the furnace bottom surface S in order to guide molten metal which is a molten material of the predetermined metal having remaining at a lower part of the matte layer without being sulfided to a side of a furnace wall 3W of the settler; and metal tap holes Hc and Hc formed through the furnace wall in order to withdraw, to an outside of the furnace, the molten metal accumulated at a bottom part of the slope area.

Dependencies are inferred from the claim text.