欢迎访问《金属矿山》杂志官方网站,今天是 分享到:
×

扫码分享

金属矿山 ›› 2015, Vol. 44 ›› Issue (11): 70-73.

• 矿物工程 • 上一篇    下一篇

某鲕状赤铁矿石低温连续悬浮焙烧试验

陈超1,2,3,刘亚川1,2,3,张裕书1,2,3,张少翔1,2,3   

  1. 1.中国地质科学院矿产综合利用研究所,四川 成都 610041;2.国土资源部钒钛磁铁矿综合利用重点实验室,四川 成都 610041;3.中国地质调查局金属矿产资源综合利用技术研究中心,四川 成都 610041
  • 出版日期:2015-11-15 发布日期:2015-12-16
  • 基金资助:

    * 中国地质大调查项目(编号:12120113087600)。

Continuous Suspension Roasting Experiments on an Oolitic Hematite Ore at Low Temperature

Chen Chao1,2,3,Liu Yachuan1,2,3,Zhang Yushu1,2,3,Zhang Shaoxiang1,2,3   

  1. 1.Institute of Multipurpose Utilization of Mineral Resource,Chinese Academy of Geological Sciences,Chengdu 610041,China;2.Key Laboratory of Vanadium-titanium Magnetite Comprehensive Utilization,Ministry of Land and Resources,Chengdu 610041,China;3.Metal Mineral Resources Comprehensive Utilization Technology Research Center,China Geological Survey,Chengdu 610041,China
  • Online:2015-11-15 Published:2015-12-16

摘要: 中国地质科学院矿产综合利用研究所与东北大学联合研制了连续悬浮焙烧炉,为检验某应用于鲕状赤铁矿石开发的可能性,采用该炉进行悬浮磁化焙烧—弱磁选选矿试验。结果表明,-0.3 mm的某鲕状赤铁矿石在焙烧温度为575 ℃,还原气体CO的体积分数为90%(N2的体积分数为10%)、总流量为6 m3/h的情况下以100 kg/h的给矿速度连续悬浮焙烧,焙烧产物磨至-0.074 mm占90%后用Φ400×300型筒式弱磁选机1次弱磁选(磁场强度为120 kA/m),获得的精矿铁品位为56.22%、铁回收率为88.84%。悬浮焙烧过程的特点及弱磁选精矿指标表明,连续悬浮焙烧炉可实现鲕状赤铁矿石的高效、低耗开发利用。

关键词: 鲕状赤铁矿石, 连续悬浮焙烧炉, 流态化焙烧, 还原

Abstract: Ministry of Land and Resources,Chengdu 610041,China;3.Metal Mineral Resources Comprehensive Utilization Technology Research Center,China Geological Survey,Chengdu 610041,China To test the possibility of develop oolitic hematite ore utilization using continuous suspension roaster developed by Institute of the Multipurpose Utilization of Mineral Resource and Northeastern University,suspension magnetic roasting-low intensity magnetic separation was conducted.The results showed that the -0.3 mm oolitic hematite ore was roasted at the conditions of temperature 575 ℃,CO volume concentration 90%(N2 volume concentration 10%),and total gas flow 6 m3/h,feeding rate of 100 kg/h and roasted products ground to -0.074 mm 90%,and then beneficiated by low intensity magnetic separation on Φ400×300 low intensity magnetic separator at the field intensity of 120 kA/m,concentrate with iron grade 56.22% and recovery 88.84% was obtained.The features of the suspension roasting and the index of the concentrate affirm continuous suspension roaster can realize high efficiency and low consumption utilization of oolitic hematite ore.

Key words: Oolitic hematite ore, Continuous suspension roaster, Fluidized roasting, Reduction