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金属矿山 ›› 2011, Vol. 40 ›› Issue (06): 67-70.

• 矿物工程 • 上一篇    下一篇

2,4-二羟基苯甲酸对赤铁矿和石英的抑制性能

刘文刚1,魏德洲1,王晓慧2,崔宝玉1   

  1. 1.东北大学资源与土木工程学院;2.中国地质科学院矿产综合利用研究所
  • 出版日期:2011-06-08 发布日期:2011-06-09
  • 基金资助:

    “十一五”国家科技支撑计划项目(编号:2008BAB32B14),国家自然科学基金项目(编号:51004027)。

Depressing Performance of 2,4-dihydroxy-benzoic Acid to Hematite and Quartz

Liu Wengang1,Wei Dezhou1,Wang Xiaohui2,Cui Baoyu1   

  1. 1.School of Resource and Civil Engineering, Northeastern University;2.Institute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Science
  • Online:2011-06-08 Published:2011-06-09

摘要: 通过单矿物试验比较了2,4-二羟基苯甲酸对赤铁矿和石英的抑制性能,结果显示,该药剂对石英有较强的的抑制作用,而对赤铁矿的抑制作用弱得多。在矿浆pH=8.4条件下,以30.4 mg/L油酸钠为捕收剂、40.2 mg/L 2,4-二羟基苯甲酸为抑制剂分选赤铁矿与石英的人工混合矿(配比为32),可取得精矿铁品位64.03%、铁回收率90.66%的分选指标。动电位测试和红外光谱分析结果表明,2,4-二羟基苯甲酸在石英表面发生吸附时,依靠的是氢键作用。

关键词: 2, 4-二羟基苯甲酸, 石英, 赤铁矿, 抑制性能, 氢键吸附

Abstract: The depressing performance of 2,4-dihydroxy-benzoic acid to hematite and quartz was studied via single mineral flotation and the results show that it has better depression to quartz, but less affect on hematite. When the pH of pulp is 8.4 with 30.4 mg/L of sodium oleate as collector and 40.2 mg/L of 2,4-dihydroxy-benzoic acid as depressant, iron concentrate grading at 64.03% with a 90.66% iron recovery was obtained from the artificial mixed ores(mixing ratio at 3:2) of hematite and quartz. The Zeta potentials measurements and FTIR spectra analysis showed that the depressing performance of 2,4-dihydroxy-benzoic acid to the surface of quartz mainly relies on the hydrogen-bonding adsorption.

Key words: 2,4-dihydroxy-benzoic acid, Quartz, Hematite, Depressing performance, Hydrogen-bonding adsorption