| 摘要 |
PROBLEM TO BE SOLVED: To produced a reduced metal in a high efficiency. SOLUTION: At the time of producing a reduced metal by reducing a powdery iron-contg. material, the powdery iron-contg. material is mixed with a powdery reducing material and furthermore with an auxiliary raw material to form into a mixture of 0.4 to 1.3 basicity, which is held on a hearth for a time of >=1/3 of the total time for reducing treatment so as to control the inside temp. of the mixture >=1,200 deg.C and the reducing ratio thereof to 40 to 80%, and next, the mixture after the reduction is melted.
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