Process Mineralogy of Flotation Products of a Copper-molybdenum Ore in Jiama, Xizang
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摘要:
对西藏甲玛角岩型和矽卡岩型铜钼矿石以及分离浮选得到的铜精矿和钼精矿进行了工艺矿物学研究。研究表明:角岩型铜钼矿含Cu 0.38%、 Mo 0.01%,矽卡岩型铜钼矿含Cu 0.85%、含Mo 0.03%,浮选得到的铜精矿中的Mo主要以与铜矿物连生的形式流失,钼精矿中杂质矿物主要以与辉钼矿连生或细小颗粒的形式进入到钼精矿中。研究结果为充分利用该矿石资源、选别工艺的优化提供理论指导。
Abstract:The process mineralogy was studied on hornstone and skarn copper-molybdenum ores and the copper and molybdenum concentrates was obtained by separating flotationin Jiama, Xizang. The research shows that the hornstone copper-molybdenum ore contains Cu 0.38% and Mo 0.01%, and the skarn copper-molybdenum ore contains Cu 0.85% and Mo 0.03%. Mo is mainly lost in the form of continuous growth with copper minerals in the copper concentrate. The impurity elements in the molybdenum concentrate mainly enter into the molybdenum concentrate in the form of continuous growth with molybdenite or fine particles. The research results provide theoretical guidance for making full use of the ore resources and optimizing the sorting process.
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Key words:
- Copper-molybdenum ore /
- Hornstone type /
- Skarn type /
- Process mineralogy /
- Copper concentrate /
- Molybdenum concentrate
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表 1 角岩型铜钼矿石化学成分分析/%
Table 1. Analysis of chemical composition of hornstone copper-molybdenum ores
Cu C Mo Fe S SiO2 Al2O3 CaO K2O MgO 其他 0.38 0.83 0.01 2.55 2.05 68.44 9.46 2.12 5.44 1.06 7.66 表 2 矽卡岩型铜钼矿石化学成分分析/%
Table 2. Chemical composition analysis of skarn copper-molybdenum ores
Cu Mo Fe S Bi Pb Zn SiO2 MgO Al2O3 CaO C 其他 0.85 0.03 7.13 5.45 0.01 0.12 0.05 35.42 1.39 4.41 26.52 2.22 16.40 表 3 铜钼分离浮选实验结果
Table 3. Results of copper and molybdenum separation flotation test
产品名称 产率/% 品位/% 回收率/% Cu Mo Cu Mo 混合精矿 100.00 19.00 0.38 100.00 100.00 钼精矿 0.66 0.94 46.50 0.03 80.76 铜精矿 99.34 19.12 0.07 99.97 19.24 表 4 矿物组成及相对含量
Table 4. Mineral composition and relative content
金属矿物 含量/% 非金属矿物 含量/% 黄铁矿 40.79 石英 2.64 黄铜矿 17.71 云母 1.15 斑铜矿 17.38 绿帘石 1.09 铜蓝 3.98 长石 0.98 辉铜矿 3.32 方解石 0.69 方铅矿 2.61 辉石 0.25 黑铜矿 1.65 硅灰石 0.03 闪锌矿 1.10 其他矿物 4.51 辉钼矿 0.12 合计 100.00 表 5 矿物组成及相对含量
Table 5. Mineral composition and relative content
金属矿物 含量/% 非金属矿物 含量/% 辉钼矿 78.67 石英 1.32 黄铁矿 9.37 方解石 0.89 黄铜矿 2.09 长石 0.46 斑铜矿 1.84 辉石 0.36 方铅矿 0.48 绿帘石 0.11 铜蓝 0.33 硅灰石 0.11 闪锌矿 0.26 其他矿物 3.71 合计 100.00 -
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