改善赤铁矿磨矿效果的试验研究

作者：Li Lian; Dai Sixing; Wang Feiyang; Liu Jiawen; Zhang Qin; Guo Zhenqiang

来源：Multipurpose Utilization of Mineral Resources, 2019, 40(1): 61-65.

DOI：10.3969/j.issn.1000-6532.2019.01.013

• Grinding concentration
• Grinding fineness
• Hematite

In order to improve the grinding effects of hematite, using the hematite from western Hubei province and combining with the conventional regulators of hematite, the three kinds of reagents of sodium hydroxide, lime and sodium hexametaphosphate were selected. Different grinding concentrations and different dosage of reagents were considered. The experimental results indicated that the effect of three kinds of agents are from strength to weakness on hematite grinding as follows: sodium hexametaphosphate, sodium carbonate, lime, and too much lime could make the grinding indicators worse. The content of -0.074 mm size fraction is the highest when the grinding concentration is 60% by adding sodium hexametaphosphate or sodium carbonate, but the 50% of grinding concentration leads to higher yield of -0.074 mm size when lime was added. There was more significant influence on grinding of hematite when the grinding concentrating was higher. Compared with the grinding concentration of 60% and 50%, the content of -0.074 mm size fraction was improved higher when the grinding concentration is 70% in this test. ? 2019 Multipurpose Utilization of Mineral Resources.

• 单位
  武汉科技大学