| 微细粒鲕状赤铁矿、石英的分散行为与机理研究 |
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| 引用本文： | 张晋霞,牛福生,陈淼. 微细粒鲕状赤铁矿、石英的分散行为与机理研究[J]. 中国矿业, 2014, 23(5): 120-125 |
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| 作者姓名： | 张晋霞 牛福生 陈淼 |
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| 作者单位： | 河北联合大学矿业工程学院,河北联合大学矿业工程学院,河北联合大学矿业工程学院 |
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| 基金项目： | 河北省自然基金项目(E2011209015)，河北省高校百名优秀创新人才计划（2013~2016） |
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| 摘 要： | 通过不同力场中微细粒赤铁矿及石英颗粒的沉降及受力特性研究,得出分散-选择性絮凝是微细颗粒有效分选的途径。采用沉降实验考查了不同分散剂的种类、pH值、搅拌速度对赤铁矿、石英的分散行为影响规律。结果表明,三种分散剂对赤铁矿分散效果由强至弱的顺序为:六偏磷酸钠焦磷酸钠碳酸钠。通过Zeta电位测定和DLVO理论计算,分析了六偏磷酸钠提高赤铁矿分散行为的作用机理。
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| 关 键 词： | 微细粒 鲕状赤铁矿 分散行为 Zeta电位 DLVO理论 |
| 收稿时间： | 2013-11-07 |
| 修稿时间： | 2014-03-09 |
Study on behaviors and mechanism of dispersion of fine oolitic hematite and quartz particle |
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| ZHANG Jinxi,NIU Fusheng and CHEN Miao. Study on behaviors and mechanism of dispersion of fine oolitic hematite and quartz particle[J]. CHINA MINING MAGAZINE, 2014, 23(5): 120-125 |
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| Authors: | ZHANG Jinxi NIU Fusheng CHEN Miao |
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| Affiliation: | College of Mining Engineering,Hebei United University,Hebei Tangshan,063009,College of Mining Engineering,Hebei United University,Hebei Tangshan,063009,College of Mining Engineering,Hebei United University,Hebei Tangshan,063009 |
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| Abstract: | Through subsidence and stress characteristics study of fine oolitic hematite and quartz particles in different force field, dispersion-selective flocculation was regarded as effective separation way for fine particles. Influences of dispersion type, pH, stirring speed on the dispersion before selective flocculation of fine hematite particle were investigated by sedimentation experiments. The results shows that three kinds of dispersion agents in the same concentration, the order of fine hematite and quartz dispersion was sodiumShexametaphosphate > sodium pyrophosphate > sodium carbonate. The dispersion mechanism of sodium hexametaphosphate on the fine hematite minerals was confirmed by measurements of zeta potentials and DLVO theory. |
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| Keywords: | fine particle, oolitic hematite, dispersion behavior, zeta potential, DLVO theory |
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