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首页> 外文期刊>Minerals Engineering >The effect of using different comminution procedures on the flotation of sphalerite
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The effect of using different comminution procedures on the flotation of sphalerite

机译：使用不同的粉碎程序对闪锌矿浮选的影响

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High Pressure Grinding Rollers (HPGR) are known to reduce energy consumption and wear costs and improve the throughput in the circuit. It has been suggested that they can also modify the liberation characteristics of the ore. In the present study the effect of using conventional crushing as opposed to HPGR in combination with either dry or wet milling was investigated using a base metal sulphide, viz. sphalerite,in order to determine whether there may be an improvement in flotation performance following the use of different comminution procedures. It was found that, irrespective of the crushing procedure (HPGR or conventional), dry milling resulted in the highest grades and recoveries of zinc. These were typically 94% recovery at 40% grade. In order to gain an insight into the effect which these comminution procedures had on the ore, samples of feed and product were investigated using surface analytical techniques. Mineralogical analyses showed no differences in the liberation characteristics of sphalerite irrespective of the comminution procedures used. However, dry milling produced a lower d50. The paper proposes possible reasons to explain these observations.
机译：众所周知，高压磨辊（HPGR）可以减少能耗和磨损成本，并提高电路的生产率。已经建议它们也可以改变矿石的释放特性。在本研究中，使用贱金属硫化物，即使用常规粉碎而不是HPGR结合干磨或湿磨的效果进行了研究。闪锌矿，以确定在使用不同的粉碎程序后浮选性能是否有所改善。已发现，不论粉碎程序（HPGR或常规）如何，干磨均可得到最高品位和最高锌回收率。这些通常在40％的品位上达到94％的回收率。为了深入了解这些粉碎程序对矿石的影响，使用表面分析技术对饲料和产品样品进行了研究。矿物学分析表明，无论使用何种粉碎方法，闪锌矿的释放特性均无差异。然而，干磨产生较低的d50。本文提出了解释这些观察结果的可能原因。

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