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lean iron ore
met.
贫铁矿石
(【技】铁品位较低的铁矿石,一般含铁为30% -40%或更低。贫铁矿人炉前要进行选矿处理,提高含铁量,降低脉石含量及有害元素含量,制成人造富矿后供冶炼用。)
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