Tests on iron recovery for a xinjiang copper tailing

The iron grade of one Xinjiang copper flotation tailings reaches up to 25%,by a microscopic,X-ray diffraction analysis shows that metal minerals are hematite (actual specularite),a small amount of pyrite,chalcopyrite,covellite,chalcocite,limonite,etc.In order to utilize the resource,one enterprise has used high intensity magnetic separation to recover iron minerals.For solving the problem low resource efficiency,reducing roasting-magnetic separation test was finished,then weak magnetic hematite was reduced to high magnetic magnetite.The iron concentrate grade of 58.78% at iron recovery 89.00% was obtained by low magnetic separation.The research has important significance on reclamation of the tailings and reducing environmental pollution due to tailing stack.