适用于高炉冶炼不锈钢母液的含铬炉料制备

doi:10.13228/j.boyuan.issn0449-749x.20180054

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Abstract The utilization of low grade chromite concentrates or fines is an effective way to improve the competiveness of stainless steel products in the market.Preliminary agglomeration of these concentrates or fines is an essential step to improve the reduction efficiency and reduce the coke ratio of the smelting process. Earlier researches and experiences of Central South University in producing high quality feedstocks from low grade chromite concentrates for alternative production of stainless steel master alloys in blast furnaces were summarized. Pilot-scale tests showed that both high strength oxidized pellets （over 2 500 N/pellet） and sinters could be manufactured from any proportion of chromite concentrate. High pressure grinding rollers （HPGR） pretreatment is a key technique to strengthen the agglomeration of chromite concent rates. To achieve a desirable metallurgical performance of agglomerates in blast furnaces， the proportion of chromite concentrate should be less than 60%. Pellet-sintering technique is an effective and economic method for the agglomeration offine chromite concentrates. It is feasible to use the chromium-bearing sinter as the charging material for stainless steel master alloys production in blast furnaces.

Received: 05 February 2018 Published: 26 October 2018

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	ZHU De-Qiang
	YANG Cong-Cong
	PAN Jian

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ZHU De-Qiang,YANG Cong-Cong,PAN Jian. Preparation of chromium-bearing agglomerates for stainless steel master alloy production in blast furnace[J]. Iron and Steel, 2018, 53(10): 16-23.

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http://www.chinamet.cn/Jweb_gt/EN/10.13228/j.boyuan.issn0449-749x.20180054 OR http://www.chinamet.cn/Jweb_gt/EN/Y2018/V53/I10/16

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