| 陕西某鳞片石墨矿选矿工艺试验研究 |
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| 引用本文： | 王康,高惠民,任子杰,管俊芳,汪巍,韩子文.陕西某鳞片石墨矿选矿工艺试验研究[J].矿产保护与利用,2020,40(6):71-76. |
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| 作者姓名： | 王康 高惠民 任子杰 管俊芳 汪巍 韩子文 |
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| 作者单位： | 1.武汉理工大学 资源与环境工程学院, 湖北 武汉 430070 |
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| 摘 要： | 以陕西某地鳞片石墨矿为研究对象，在其X射线衍射分析和化学分析的基础上，进行了系统的选矿工艺试验研究，确定了最佳粗磨磨矿细度、粗选捕收剂用量、起泡剂用量及粗选矿浆浓度，并在此基础上进行了全流程的开路试验和闭路试验，并对闭路浮选精矿进行了成分和形貌分析。结果表明，该矿石为晶质片状石墨，固定碳含量为13.70%，主要脉石矿物为方解石和石英。经过系统选矿试验，最终确定采用一次粗磨、一次粗选、五次再磨和六次精选闭路流程，获得了精矿固定碳含量95.92%、回收率90.35%的良好指标。精矿分析结果表明，脉石矿物主要存在于粗粒级和细粒级中，鳞片石墨粒径大部分在50 μm以上，石墨鳞片结晶普遍较好，表面平滑，大鳞片石墨受到磨剥，有少量细小杂质颗粒附着于表面上。
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| 关 键 词： | 石墨 浮选 固定碳 鳞片 |
| 收稿时间： | 2020-12-02 |
Experimental Study on a Flake Graphite Dressing Process in Shaanxi Province |
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| Affiliation: | 1.School of Resources and Environmental Engineering, Wuhan 430070, China2.University of Technology Hubei Key Laboratory of Mineral Resources Processing and Environment, Wuhan 430070, China3.Zaozhuang Jinxing blasting Co., Ltd, Zaozhuang 277100, China |
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| Abstract: | The graphiteore from Shaanxi province was used as the object in this research. On the basis of X-ray diffraction analysis and chemical analysis of the sample, a systematic experimental study on beneficiation process was implemented. And the optimum fineness of rough grinding, the amount of collector, frother and regulator and the density were determined. Then the whole flowsheets open-circuit test and closed-circuit test were carried out on this basis. The composition and morphology analysis were carried out on the closed-circuit flotation concentrate. The results showed that the ore was crystalline flake graphite with a fixed carbon content of 13.70%. The main gangue minerals are calciteandquartz. After systematic beneficiation test, the closed-circuit flowsheet of one roughing, one roughing, five regrinding and six cleaning was finally adopted. A good index of 95.92% fixed carbon content and 90.35% recovery of concentrate was obtained. The results of concentrate analysis showed that gangue minerals mainly existed in coarse class and fine class of concentrate. The size of flake graphite was mostly above 50 μm. The flake graphite crystallized well and its surface was smooth. The large flake graphite was abraded and a small amount of fine bright impurity mineral particles were attached to the surface. |
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