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云南召夸赤铁矿流化床直接还原—磁选试验
Authors
侯宝林
张朝英
朱庆山
Publication date
1 January 2009
Publisher
Abstract
召夸赤铁矿原矿品位低,嵌布粒度细。采用流化床作为直接还原装置,以H2与N2的体积比为1∶4的混合气体作为还原气,对召夸赤铁矿进行直接还原—磁选试验。结果表明:在700℃下将磨矿细度为-150目占92%的原矿直接还原70min,可得金属化率为85.89%的还原矿。将还原矿在球磨机中细磨至平均粒径为3.98μm,在场强为63.66kA/m的磁选管中磁选,可得品位为73.04%,回收率为77.28%铁精矿
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Last time updated on 09/11/2016