| 摘要 |
PURPOSE:To manufacture inexpensively highly reduced pellets by blending chrome ore with a carbonaceous reducing agent and a binder, molding the blend into pellets, heating the pellets under atmospheric pressure to form reduced pellets whose surfaces are rich in an oxide phase, and projecting a grinding material to remove the oxide phase. CONSTITUTION:Chrome ore is blended with a carbonaceous reducing agent and a binder, and the blend is molded into pellets. The pellets are heated to 1,200- 1,500 deg.C under atmospheric pressure to form reduced pellets whose surfaces are rich in an oxide phase. A grinding material is projected on the surface of the reduced pellets by centrifugal projection, blasting or other method to remove the oxide-rich surface layers. Alumina, silicon carbide, hardened steel or the like is used as the grinding material.
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