Suspension-type dry separator is a new type of dry pre-concentration equipment for magnetic iron ore self-developed by Dalian Haiqiao Science and Technology Co. ,Ltd.. It is adopted to make industrial tests on the dry tailings removal for the super lean magnetite of Chengde Baiquan iron ore. The results showed that compared with the CTG800 x 1400 magnetic pulley traditionally used in Baiquan Iron Mine, this equipment made tailings removal rate increased from 5. 20% to 20. 24% , ore grade for grinding increased from 0. 50% to 1. 12% , the content of magnetic iron in tailings decreased from 1. 16% to 0. 75%. Economic benefit analysis showed that 16 500 t more iron concentrate was produced each year by u-sing this equipment, and the corresponding production value was increased by 16. 5 million yuan a year according to the current price.%悬浮式干选机是大连海桥科技有限公司研制的一种新型磁铁矿石干式预选设备.采用该设备对承德柏泉铁矿的超贫磁铁矿石进行了干选抛尾工业试验,结果表明,与柏泉铁矿原来使用的CTG800×1400磁滑轮相比,该设备使抛尾率由5.20％提高到了20.24％,入磨矿石品位由提高0.50个百分点上升到了提高1.12百分点,抛出尾矿的磁性铁含量由1.16％降到了0.75％.经济效益分析显示,采用该设备后,柏泉铁矿每年可多产铁精矿1.65万t,按目前价格,相应产值增加1 650万元/a.
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