To provide a method for efficiently removing a residue deposited on the furnace bottom of a recycling furnace with no slag layer and no matte layer.
A method for removing a deposit on the furnace bottom in an iron and tin-containing copper treatment furnace is executed as follows: the temperature in the iron and tin-containing copper treatment furnace, on the furnace bottom of which an iron compound is deposited, is raised to a temperature between 1,300°C and 1,400°C, and a slag part and a metal part are removed from the furnace; then metal grains, which have a grain size of 2-30 mm, a metallic Fe content of 50-95 mass%, a C content of 1-5 mass%, and a Cu content of ≤35 mass%, and which are obtained by smelting reduction treatment of general waste or industrial waste, are thrown on to a furnace bottom deposit, which is formed on the furnace bottom and contains Fe3O4 as a main component, from above the furnace bottom; so that the furnace bottom deposit that is formed on the furnace bottom and contains Fe3O4 as a main component is efficiently dissolved and removed.
TAKAHASHI KAZUYA
MIYANAGA HIROSHI
NUMATA MAKOTO
| JP2005008965A | 2005-01-13 | |||
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