• 矿物工程 •

### 贵州赫章鲕状赤铁矿选矿试验研究

1. 1.贵州大学；2.贵州非金属矿产资源综合利用重点实验室
• 出版日期:2011-01-15 发布日期:2011-01-06
• 基金资助:

贵州省优秀科技教育人才省长专项基金项目（编号：Z073218）；贵州大学研究生创新基金项目（编号：2009028）

### Test Research on Beneficiation of Hezhang Oolitic Hematite in Guizhou Province

Tang Yun1,2，Liu Anrong1，Yang Qiang1，Zhang Qin1,2

1. 1. Guizhou University；2.Guizhou Key Laboratory for Comprehensive Utilization of Non-metallic Mineral Resources
• Online:2011-01-15 Published:2011-01-06

Abstract: The experiments on iron improvement and phosphorous reduction for Hezhang oolitic hematite in Guizhou, were carried out by high intensity magnetic separation-reverse flotation. With a grinding fineness of 77.50% -0.075 mm, the magnetic field strength of 1.55 T and the rods media, a rough high-intensity magnetic separation was conducted. Next, rough concentrate is treated by a cleaning separation under conditions of grinding fineness of -0.038 mm 84.00%, the magnetic field strength of 1.40 T and the net media. And rough tailings are treated by a scavenging separation under conditions of the magnetic field strength at 1.40 T and the net media. Then, the cleaning tailings and scavenging concentrate are mixed together and send back into the grinding closed-circuit process to obtain iron concentrate grading at 52.13% with phosphorus content of 0.45% and the recovery of 72.16%. Finally, a reverse flotation is conducted on concentrate from high-intensity magnetic separation by adopting the high-performance regulators and connectors. Then iron concentrate with iron grade of 56.14% and the phosphorus content of 0.22% and the recovery of 62.48% is achieved. The high-intensity magnetic separation-inverse flotation process provides a feasible basis for developing the oolitic hematite in this area.