| Ca2+对钛铁矿与钛辉石浮选行为的影响 |
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| 引用本文： | 张国范,鄢代翠,朱阳戈,冯其明,欧乐明,卢毅屏. Ca2+对钛铁矿与钛辉石浮选行为的影响[J]. 中南大学学报(自然科学版), 2011, 42(3) |
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| 作者姓名： | 张国范 鄢代翠 朱阳戈 冯其明 欧乐明 卢毅屏 |
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| 作者单位： | 中南大学资源加工与生物工程学院,湖南,长沙,410083 |
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| 基金项目： | 国家重点基础研究发展规划项目，教育部博士点基金资助项目，湖南省研究生科研创新项目 |
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| 摘 要： | 以油酸钠为捕收剂,研究钛铁矿与钛辉石表面离子的溶出行为,并考察加入与脱除Ca2+对钛铁矿和钛辉石浮选行为的影响.研究结果表明:在浮选体系中加入Ca2+,对钛铁矿的浮选影响不大,但在碱性条件下活化了钛辉石的浮选;在浮选过程中,钛铁矿与钛辉石表面均有大量Ca2+溶解于矿浆中;脱除溶解离子后,钛铁矿的可浮性在弱酸性pH区间变化不大,在碱性pH区间明显变差,钛辉石在整个pH区间可浮性均变差;在脱除溶解离子后的矿浆体系中加入Ca2+,2种矿物在碱性矿浆环境下的可浮性都有所恢复;在碱性条件下,呈羧基络合物和氢氧化物沉淀形式存在的Ca2+吸附在钛辉石表面,使钛辉石表面油酸根离子的吸附活性质点增加,是Ca2+起活化作用的主要原因.
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| 关 键 词： | 钛铁矿 钛辉石 浮选 溶解 |
Influence of calcium ion on flotation of ilmenite and titanaugite |
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| ZHANG Guo-fan,YAN Dai-cui,ZHU Yang-ge,FENG Qi-ming,OU Le-ming,LU Yi-ping. Influence of calcium ion on flotation of ilmenite and titanaugite[J]. Journal of Central South University:Science and Technology, 2011, 42(3) |
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| Authors: | ZHANG Guo-fan YAN Dai-cui ZHU Yang-ge FENG Qi-ming OU Le-ming LU Yi-ping |
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| Affiliation: | ZHANG Guo-fan,YAN Dai-cui,ZHU Yang-ge,FENG Qi-ming,OU Le-ming,LU Yi-ping(School of Minerals Processing and Bioengineering,Central South University,Changsha 410083,China) |
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| Abstract: | The solubility behavior of mineral surface ions and effects of Ca2+ on flotation of ilmenite and titanaugite were investigated.The results show that the addition of Ca2+ into pulp has little impact on ilmenite flotation,while it can activate titanaugite flotation.Large numbers of Ca2+ may dissolve into pulp from mineral surface in flotation process.When solvent ions are removed,the floatability of ilmenite changes little under weak acid pH condition but deteriorates obviously under the alkaline pH condition... |
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| Keywords: | Ca2+ |
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