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首页> 外文期刊>Journal of industrial and engineering chemistry >Iron ore grindability improvement by microwave pre-treatment
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Iron ore grindability improvement by microwave pre-treatment

机译：通过微波预处理提高铁矿石的可磨性

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The influence of microwave pre-treatment on grindability of iron ore (Orissa, India) was investigated by grindability tests. SEM analysis characterized the micro-fractures in microwave treated sample. This may be due to the thermal stress cracking resulted from microwave energy pre-treatment. XRD analysis showed the crystalline content of the sample. It was found that the microwave treated iron ore has peak more than that of untreated ore, i.e. the crystallinity increased with the microwave exposure time. The calculation of HGGI indicated increase in the ease of grinding or decrease in grindability index of the microwave treated ore. Grindability test showed that the microwave treated iron ore grinds much more rapidly initially than the untreated ore. The results showed that the breakage function of both microwave untreated and treated iron ore is dependent of the particle size. The grindability increased significantly as a result of microwave pre-treatment with the specific rate of breakage (S,) increasing by an average of 50%. It was concluded that microwave assisted grinding produced good results particularly for grinding characteristics.
机译：通过可磨性测试研究了微波预处理对铁矿石（印度奥里萨邦）可磨性的影响。 SEM分析表征了微波处理样品中的微裂纹。这可能是由于微波能量预处理导致的热应力开裂。 XRD分析显示样品的晶体含量。已经发现，微波处理的铁矿石比未处理的矿石具有更大的峰，即，结晶度随微波暴露时间而增加。 HGGI的计算表明，经微波处理的矿石的研磨容易性增加或研磨性指数降低。可磨性测试表明，与未处理的矿石相比，微波处理的铁矿石最初研磨的速度要快得多。结果表明，未经处理的微波矿石和经处理的铁矿石的破碎功能均取决于粒径。微波预处理使可磨性显着提高，比破损率（S，）平均提高了50％。结论是，微波辅助研磨产生了良好的效果，特别是在研磨特性方面。

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