首页> 外国专利> A BENEFICIATION PROCESS FOR IRON ORE FINES

A BENEFICIATION PROCESS FOR IRON ORE FINES

机译:铁矿细粉的选矿过程

摘要

A beneficiation process for iron ore fines of size less than 1 mm having more than 3% of Alumina content is described. The process comprises dry screening of the iron ore fines by means of a screen of size 250�, forming a finer fraction iron ore and a coarser fraction iron ore, feeding the finer fraction iron ore to a first Hydrocyclone, forming a first underflow and a first overflow, the first hydrocyclone being operated at Vortex finder diameter: ll-16mm, Spigot diameter: 3.0-6.0 mm, % Solid (by wt.): 5-15 and Feed Inlet Pressure 30-48 psi. Feeding the first underflow to a Fine Mineral Spiral Separator (FMSS) resulting a first concentrate and a first tailing, the FMSS operating at % Solid (by wt): 20- 30mm, Feed flow rate (m3/hr): 2.1-4.3 mm, and Splitter Position (cm): 4-14; feeding the coarser fraction iron ore to a second Hydrocyclone resulting in a second underflow and a second overflow, the second hydrocyclone operating at Vortex finder diameter: ll-14mm, Spigot diameter: 4.0-8.0mm, % Solid (by wt.): 5-15 and Feed Inlet Pressure 30-48 psi; and feeding the second underflow to a High Gradient Spiral Separator (HGSS) resulting in a second concentrate and a second tailing, the HGSS operating at % Solid (by wt): 15-25mm, Feed flow rate (m3/hr): 2.1-4.3 mm, and Splitter Position (cm): 4-14.
机译:描述了具有大于3%的氧化铝含量的尺寸小于1mm的铁矿粉的选矿工艺。该工艺包括通过尺寸为250的筛子对铁矿粉进行干式筛分,形成较细的铁矿石和较粗的铁矿石,将较细的铁矿石供入第一水力旋流器,形成第一底流和第一次溢流,第一个水力旋流器在涡旋发现器直径:ll-16mm,子管直径:3.0-6.0 mm,%固体(重量):5-15和进料入口压力30-48 psi下运行。将第一个底流送入细矿螺旋分离器(FMSS),得到第一个精矿和第一个尾矿,FMSS在固体%(按重量计):20-30mm,进料流速(m3 / hr):2.1-4.3mm下运行和分配器位置(厘米):4-14;将粗级分的铁矿石送入第二个水力旋流器,导致第二次下溢和第二次溢流,第二个水力旋流器在旋涡取水器直径:ll-14mm,子管直径:4.0-8.0mm,固含量(重量):5下运行-15和进料口压力30-48 psi;并将第二底流送入高梯度螺旋分离器(HGSS),得到第二浓缩物和第二尾矿,HGSS在固体%(按重量计):15-25mm,进料流速(m3 / hr):2.1- 4.3毫米,分配器位置(厘米):4-14。

著录项

相似文献

  • 专利
  • 外文文献
  • 中文文献
获取专利

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号