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四川某锂辉石矿磨矿产品粒级优化试验研究

Mining and Metallurgical Engineering(2019)

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Abstract
针对四川某锂辉石矿,在浮选入料粒度为-0.075 mm粒级占70%的前提下,系统研究了磨矿浓度、磨矿时间、介质充填率、钢球配比、药剂作用及磨矿介质类型等参数对锂辉石最佳浮选粒级(-0.106+0.038 mm)分布及品位的影响.实验室试验结果表明,通过调整磨矿浓度、介质充填率和钢球配比等参数,可有效提高-0.106+0.038 mm粒级含量和磨矿技术效率.在此基础上,添加碳酸钠可改善磨矿过程中矿浆的流变性,碳酸钠用量为800 g/t时,能进一步提高-0.106+0.038 mm粒级产率.在-0.075 mm粒级占70%条件下,球磨和棒磨获得的-0.106+0.038 mm粒级含量相近,但球磨产品中该粒级Li2 O品位更高,选择性磨矿作用更好.优化球磨参数后,锂辉石回收率可达95.92%,精矿品位为4.84%.
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