Effect of Al (III) Ions on the Separation of Cassiterite and Clinochlore Through Reverse Flotation
Effect of Al (III) Ions on the Separation of Cassiterite and Clinochlore Through Reverse Flotation
复制标题
Al(III)离子对反浮选锡石和斜绿石分离的影响
DOI：
10.3390/min8080347
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发表时间：
2018-08
期刊：
影响因子：
2.5
通讯作者：
Xian Xie
中科院分区：
文献类型：
--
作者：
Yumeng Chen;Xiong Tong;Dongxia Feng;Xian Xie
已知大多数疏水粘土矿物，例如斜绿泥石，会在回收绿柱石中引起问题。在这项研究中，一个新的试剂方案，即，研究了以油酸钠为捕收剂，铝离子为分散剂，反浮选分离斜绿泥石和黄长石的工艺条件。通过微浮选试验、吸附试验、接触角测定和X射线光电子能谱（XPS）分析，研究了它们的浮选性能和作用机理。单矿物浮选试验结果表明，NaOL对黄长石和斜绿泥石的浮选性能不同，Al（III）离子的加入可选择性抑制黄长石的可浮性。对混合矿物进行的反浮选试验表明，在NaOL和Al（III）离子存在下，可以实现斜绿泥石和斜绿泥石的分离。吸附实验表明，Al（III）离子阻碍NaOL在斜绿泥石表面的吸附，但对NaOL在斜绿泥石表面的吸附影响不大。接触角的测量结果表明，铝（III）离子可以阻碍水滑石在NaOL溶液中的疏水化过程。XPS结果表明，铝物种通过与O位的相互作用吸附在镁铝石表面。
Most hydrophobic clay minerals, such as clinochlore, are known to cause problems in the recovery of cassiterite. In this study, a new reagent scheme, i.e., sodium oleate (NaOL) as a collector and Al (III) ions as a depressant, for reverse flotation separation of cassiterite and clinochlore was investigated. The flotation performance and interaction mechanism were studied by microflotation tests, adsorption tests, contact angle measurements, and X-ray photoelectron spectroscopy (XPS) analysis. Results of single mineral flotation experiments showed that NaOL had a different flotation performance on cassiterite and clinochlore, and the addition of Al (III) ions could selectively inhibit the floatability of cassiterite. Reverse flotation tests performed on mixed minerals indicated that the separation of cassiterite and clinochlore could be achieved in the presence of NaOL and Al (III) ions. Adsorption experiments demonstrated that Al (III) ions hindered the adsorption of NaOL on cassiterite surfaces but exerted little influence on the adsorption of NaOL on clinochlore surfaces. Results of contact angle measurements indicated that Al (III) ions could impede the hydrophobization process of cassiterite in NaOL solution. XPS results showed that aluminum species were adsorbed onto the cassiterite surfaces through the interaction with O sites.
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DOI：
10.1016/s0927-7757(99)00214-9
发表时间：
2000-02-15
影响因子：
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作者：
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