Preliminary Evaluation of Rare Metal, Rare Earth and Rare Dispersed Mineral Resources in Red Mud Reservoir of Pingguo Bauxite in Guangxi
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摘要: 赤泥是铝土矿生产过程中产生的固体废弃物，富含战略性关键金属Zr、Nb、Sc、Ga、REE等，对其进行评价，可以为资源综合利用提供科学依据。本文对广西平果铝土矿赤泥库的赤泥进行分析研究，结果表明赤泥的主要化学成分为Fe2O3、Al2O3、CaO、SiO2、TiO2、Na2O，相比于原生矿石，赤泥中Li 元素含量相对贫乏，Be、Zr、Hf、Nb、Ta、Sc、Ga、LREE、HREE元素含量相对富集，赤泥中Fe、Ti、Zr、Nb、Sc、Ga、REE 元素含量达到了综合回收利用的要求。估算平果铝土矿赤泥库含铁（TFe）928.2 万吨、钛（TiO2）174.3 万吨、锆（ZrO2）11.81 万吨、铌（Nb2O5）1.71 万吨、钪3954 吨、镓1452 吨、轻稀土氧化物3.62 万吨、重稀土氧化物1.67 万吨。平果铝土矿赤泥库铌资源量达到了大型矿床规模，钪资源量远超过大型矿床规模。Abstract: Red mud is a solid waste produced in the process of bauxite production, which is rich in in strategic key metals as Zr, Nb, Sc, Ga, REE, etc, a preliminary evaluation of which can provide scientific basis for the comprehensive utilization of resources. The analysis of red mud in red mud dumps of Pingguo bauxite in Guangxi shows that the main chemical components of red mud are Fe2O3, Al2O3, CaO, SiO2, TiO2 and Na2O. Compared with primary bauxite, the content of Li elements is relatively poor, while Be, Zr, Hf, Nb, Ta, Sc, Ga and REE elements are enriched. Fe, Ti, Zr, Nb, Sc, Ga LREE and HREE content in red mud meet the requirements of resource recovery and utilization. It is estimated that red mud dumps of Pingguo bauxite contains 928.2 ten thousand tons of iron (TFe), 174.3 ten thousand tons of titanium (TiO2), 11.81 ten thousand tons of zirconium (ZrO2), 1.71 ten thousand tons of niobium (Nb2O5), 3954 tons of Sc, 1452 tons of Ga, 3.62 ten thousand tons of light rare earth oxides, and 1.67 ten thousand tons of heavy rare earth oxides. The niobium resources of Pingguo bauxite red mud dumps have reached the scale of large deposits, and the scandium resources have far exceeded the scale of large deposits.
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Key words:
- bauxite /
- red mud /
- rare, dispersed, and rare earth element minerals /
- Pingguo /
- Guangxi
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