| The associated mineral resource accounts for a great proportion in our country’s mineral resources and also has a high value of comprehensive utilization. Recent years, with accelerating development of industrialization and urbanization, increasing demand of resources and enlarging between resource demand and supply, developing recycling economy and realizing the comprehensive utilization of resources become an inevitable trend. Bauxite is one of, with various associated mineral resources, important mineral resources for the industry. Based on the principles in geology, mathematics and recycling economics, this paper carried out the researches on the spatial distribution, internal structures of orebody, ore characteristics, natural types and development stratigies of associated mineral resources of the bauxite in the Shanxi province.The bauxite in Shanxi mainly distributes in, from north to south, several basins in the Hedong, Ningwu-Jingle, Wutaishan, Tianhe, Yangquan, Huoxi, Qinyuan, Jincheng and Western Henan. This paper studied the sequence stratigraphy of Al-bearing stratum and deposit geology and revealed the orebody and ore characteristics. The main ore bodies were developed in shape of layer, layer-like and lense, and ore textures were dominated by cryptocrystalline and oolitic texture. The main ore minerals include diaspore, kaolinite, illite, anatase, hematite, etc. This paper also studied the statistics of orebody parameters and established the tonnage-grade model for typical deposit.Studying on the sequence features of Al-bearing rock series revealed that the bauxite has various symbiosis mineral deposit, e.g., clay, ferric clay and iron ore. Generally clay and bauxite occur on the upper portion of aluminum-hosting rock series, ferric clay and iron ore are on the bottom. Based on geochemical characteristics analysis of typical deposit, this paper investigated the geological distribution and possible value of development and utilization of the elements, e.g., Fe, Ti, Ga, V, Li, Sc, Nb, REE, etc. Among them, the elements, like Ga, Li, Fe, Co and Ni, are more enriched in clay, and Nb, Zr, Ti, REE, Th and U are more concentrated in bauxite. The elements of Fe, Ti, Ga and REE all reach the industrial recovery standard of associated mineral resource.This paper analyzed the development and utilization status of the bauxite in Shanxi, pointed out the current problems, including low ratios of basic reserves, low degree of comprehensive utilization of associated resources, abandoning ores with low grade, imperfection of unified uitilizing planning and shallow exploration depth; To improve the Shanxi bauxite exploitation, the following suggestions were put forward: strengthening macro-controls and management of enterprise related to bauxite exploitation, securing basic reserves, enhancing the comprehensive utilizations of resources, speeding up the development of new technology for mineral processing. |
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