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首页> 外文会议>XXI International Mineral Processing Congress >ELECTROCHEMICAL AND ELECTROKINETIC PROPERTIES OF CARROLLITE AND CHALCOPYRITE AND THEIR FLOTATION BEHAVIOUR
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ELECTROCHEMICAL AND ELECTROKINETIC PROPERTIES OF CARROLLITE AND CHALCOPYRITE AND THEIR FLOTATION BEHAVIOUR

机译：红柱石和黄铜矿的电化学和电动力学性质及其浮选行为

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The interaction between flotation reagents and the surfaces of sulphide minerals in the pulp takes place in the double layer of the system. In the presence of chalcopyrite only, the double layer of the system would be expected not to be appreciably affected by the presence of ionic species such as copper and iron. However, the presence of such ions seem to drastically change the double layer properties of carrollite leading to an induced positive surface charge. On the basis of the assumption that interaction of sulphide minerals with thiol collectors is electrochemical in nature, then the charged positive surfaces would be expected to undergo, for instance, reduction favouring the anodic oxidation of the collectors to form the dimer products, which are known to be hydrophobic species and would render the latter floatable. Alternatively, assuming that the interaction take place through an ion exchange type of reaction, then, with increased hydroxide type of surface species, the exchange capacities of the ionic collector species would also increase the hydrophobicity of the mineral on which these species form predominately.
机译：浮选剂与纸浆中硫化物矿物表面之间的相互作用发生在系统的双层结构中。仅在黄铜矿的存在下，预期该系统的双层不会受到诸如铜和铁之类的离子物质的明显影响。然而，这些离子的存在似乎极大地改变了红柱石的双层性质，从而导致了诱导的正表面电荷。基于这样的假设，即硫化物矿物与硫醇捕集剂的相互作用本质上是电化学的，那么带电的正表面有望发生例如还原，有利于捕集剂的阳极氧化以形成二聚体产物，这是已知的。成为疏水性物质，并使后者可漂浮。或者，假设相互作用是通过离子交换类型的反应发生的，则随着氢氧化物类型的表面物质的增加，离子收集剂物质的交换能力也将增加主要形成这些物质的矿物的疏水性。

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