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根据矿物学定量分析结果论述了微波预处理对南非一种碳酸盐铜矿石经棒磨后解离情况的影响。被处理的矿石在一台单模式微波加热器中按每批1kg、在微波功率为10.5kW的条件下处理0.5s。为进行微波预处理选用的这种矿样是从给入棒磨机的第三段破碎产品中采集的。然后将经微波预处理的和未经处理的矿石磨细到80%-800μm。经微波处理后的矿石显示出在较粗的粒度范围(106-300μm)内明显地提高了单体解离的铜矿物数量。对该矿石中的所有的矿物来说,也都发现了类似的解离度变化。可以认为,微波预处理后能使那些对微波敏感的矿物,在较粗的粒度中达到解离。
Based on the results of mineralogical quantitative analysis, the effect of microwave pretreatment on the dissociation of a carbonate copper ore in South Africa after rod milling was discussed. The ore being processed was treated for 0.5 s at a microwave power of 10.5 kW per batch in a single mode microwave heater. The mineral sample selected for microwave pretreatment was collected from the third crushed product fed into the rod mill. The microwave pretreated and untreated ores are then ground to 80% to 800 [mu] m. The ores after microwave treatment showed a clear increase in the number of copper minerals that were dissociated by the monomers in the coarser particle size range (106-300 μm). Similar changes in the dissociation have also been observed for all the minerals in the ore. It is believed that microwave preconditioning allows those microwave-sensitive minerals to dissociate at coarser particle sizes.