| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for stably producing a crude zinc oxide-lead sintered lump hard to be softened or melted in a blast furnace without reducing the productivity of the sintered lump. SOLUTION: In the method for producing a crude zinc oxide-lead sintered lump from a raw material for producing crude zinc oxide-lead including a zinc-lead raw material, a calcium oxide raw material and a silicon dioxide raw material, the zinc-lead raw material, the calcium oxide raw material and the silicon dioxide raw material are prepared in such a manner that the content of CaO in the calcium oxide raw material is controlled to 40 to 50 mol% to the total of the PbO content equivalent to the lead content in the lead raw material, the CaO content in the calcium raw material and the SiO2 content in the silicon dioxide raw material, and further, a carbonaceous solid fuel is added to the raw material for producing crude zinc oxide-lead with 1.0 wt.% as the upper limit.
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