不同破碎方法下锡石多金属硫化矿磨矿能耗研究

发布时间：2018-05-29 19:18

本文选题：锡石多金属硫化矿 + JK落重试验机　；参考：《矿业研究与开发》2017年01期

【摘要】：针对广西大厂锡石多金属硫化矿矿石,分别进行JK落重冲击破碎和传统颚式挤压破碎,再对两种破碎产物分别进行磨矿试验,并利用破碎能量模型,研究两种破碎方法对锡石多金属硫化矿破碎能耗的影响,并在Bond破碎功指数基础上,提出落重冲击破碎能耗模型。结果表明:与传统颚式挤压破碎相比,落重冲击破碎产物在细粒级中分布比重较小,在粗粒级中分布比重较大,且其产物形状比较均匀,多呈立方体状,而颚式挤压破碎产物形状比较杂乱,多呈针片状。一定磨矿时间内,磨矿时间与磨矿能耗呈正比例关系,JK落重冲击破碎产物的单位磨矿能耗低,两者最大能耗比为2.547倍,这说明对锡石多金属硫化矿采用冲击破碎方式更有利于节能降耗。
[Abstract]:For the cassiterite polymetallic sulphide ore in Dachang, Guangxi, JK impact crushing and traditional jaw crushing were carried out, and the grinding tests were carried out on the two crushing products, and the crushing energy model was used. The effects of two crushing methods on the crushing energy consumption of cassiterite polymetallic sulphide ore were studied. Based on the Bond crushing work index, the energy consumption model of falling weight impact crushing was put forward. The results show that compared with the traditional jaw crushing, the product of falling weight impact crushing is smaller in the fine grained grade and larger in the coarse particle level, and the shape of the product is more uniform and more cube shape. The jaw-type extruding products are disorderly in shape, and are mostly needle-like. In a certain grinding time, there is a positive relationship between grinding time and grinding energy consumption. The unit grinding energy consumption of the broken product of JK falling weight is low, and the maximum energy consumption ratio of the two is 2.547 times. This indicates that the impact crushing method is more favorable to saving energy and reducing consumption for cassiterite polymetallic sulphide ore.
【作者单位】：广西大学资源与冶金学院;
【基金】：973计划前期研究专项项目(2014CB460606) 国家自然科学基金资助项目(51264001) 广西生态型铝产业协同创新中心资助项目
【分类号】：TD921.4

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