| 某锂辉石矿石重介质分选—浮选工艺优化研究 |
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| 引用本文： | 丛龙斐,罗嘉靖,古缘,周长春,曲先民.某锂辉石矿石重介质分选—浮选工艺优化研究[J].矿产保护与利用,2021,41(5):25-30. |
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| 作者姓名： | 丛龙斐 罗嘉靖 古缘 周长春 曲先民 |
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| 作者单位： | 1.威海尚品机械设备科技有限公司, 山东 威海 264200 |
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| 基金项目： | 国家重大研究计划培育项目92062109 |
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| 摘 要： | 为了优化山东某锂辉石矿石选矿厂1 200 t/d重介质分选流程，以原浮选和重介分选数据为基础，结合破碎后的原矿浮沉试验结果，对重介质分选—浮选联合分选工艺进行了优化试验研究。试验结果表明，该锂辉石矿石采用重介质分选是可行的；原矿中主要有价矿物为锂辉石和钽铌锰矿，脉石矿物主要是石英、长石和云母等；新型NTMC500-350/400-T三产品重介质旋流器分选效果明显提升，在分选密度2.90 g/cm3、精矿Li2O品位4.30%时，改进后的X型旋流器的精矿Li2O回收率比Y型的约高7.00%；改进后的重介质分选工艺在第一段分选密度2.80 t/m3、第二段分选密度3.15 t/m3时，得到Li2O品位5.20%的化工级锂精矿；将重介质中矿给入浮选流程再处理，重介质分选—浮选联合工艺最终得到精矿产率35.46%、Li2O品位5.20%、Li2O回收率83.43%的分选指标。该工艺减少了浮选工艺入磨矿量，降低了运行成本高和原矿损失率。
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| 关 键 词： | 锂辉石 重介质分选 浮选 螺旋溜槽 联合分选 |
| 收稿时间： | 2021-08-02 |
Study on Technology Optimization of Heavy Medium Separation -Flotation for a Spodumene Ore |
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| CONG Longfei,LUO Jiajiang,GU Yuan,ZHOU Changchun,QU Xianmin.Study on Technology Optimization of Heavy Medium Separation -Flotation for a Spodumene Ore[J].Conservation and Utilization of Mineral Resources,2021,41(5):25-30. |
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| Authors: | CONG Longfei LUO Jiajiang GU Yuan ZHOU Changchun QU Xianmin |
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| Affiliation: | 1.Weihai Shangpin mechanical equipment technology Co. Ltd, Weihai 264200, Shandong, China2.School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China3.Shandong Special Equipment Inspection Institute Weihai Branch, Weihai 264200, Shandong, China |
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| Abstract: | In order to improve the 1 200 t/d heavy medium separation process of a spodumene concentrator in Shandong province, based on the original flotation and heavy medium separation data and combined with the flotation test of broken ore, the combined heavy medium flotation separation process was used to carry out the beneficiation experiment. The results show that heavy medium separation is feasible for spodumene ore. The main valuable ore is spodumene and tantalum niobite, gangue is quartz, feldspar, mica, etc. The new NTMC500-350/400-T cyclone separation effect is obviously improved. When the separation density is 2.90 g/cm3 and Li2O grade is 4.30%, the recovery rate of type X Li2O is about 7.00% higher than that of type Y. After the improved heavy medium process, chemical grade lithium concentrate with Li2O grade of 5.20% was obtained when the separation density of one stage was 2.80 g/cm3 and that of the second stage was 3.15 g/cm3. The combined separation process will input the heavy medium ore into the flotation process, respectively, to maximize the utilization of resources, and obtain the separation index of Li2O grade of 5.20%, Li2O recovery of 83.43%, the fine mineral rate of 35.46%, to solve the problems of heavy medium separation medium ore where about, the flotation process into grinding, high operation cost, high raw ore loss rate. |
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