淮北徐楼铁矿矿床成因和资源综合利用
发布时间：2018-08-07 16:54
【摘要】：淮北徐楼铁矿地处长江中下游。作为我国主要铜铁多金属矿产基地之一，长江中下游区域内矽卡岩型矿床广泛分布，是该区域最重要矿床类型。 在收集、整理、分析前人的研究资料和研究方法的基础上，充分认识淮北徐楼铁矿区域地质特征、矿石成分和选矿工艺。结合岩石学、矿相学、矿物学和岩石地球化学等知识，得出以下几点结论： （1）分析徐楼铁矿的侵入岩、铁矿石和围岩的地球化学特征，对徐楼铁矿成矿环境进行判别。可以得出，徐楼地区矿床围岩形成于早寒武时期的还原环境；侵入岩是中性闪长岩，属于深源岩浆；根据铁矿石δCe：0.83～1.00，得出徐楼铁矿矿床形成环境是属于氧化—还原环境，并且成矿原因和热液活动有关。 （2）含铁量较少的中酸性岩，在高温条件作用下可以析出大量铁物质，供矽卡岩铁矿床的形成。徐楼铁矿外围碳酸盐岩铁含量都低于围岩碳酸盐岩铁含量，说明碳酸盐岩不是研究区铁矿产的主要物源区，进一步证明徐楼铁矿成矿铁质来源主要是侵入岩。 （3）通过磁铁矿成因图解分析，，得出徐楼铁矿是属于矽卡岩型接触交代型铁矿床。 （4）通过对徐楼铁矿尾矿成分和物相分析，结合经验公式计算尾矿回收经济品位，发现徐楼铁矿尾矿中6.23%的铁的含量完全具有二次回收的经济效益，并且发现徐楼铁矿尾矿可以制备免烧砖和用作土壤改良剂。
[Abstract]:Huaibei Xulou Iron Mine is located in the middle and lower reaches of the Yangtze River. As one of the main copper and iron polymetallic mineral bases in China skarn deposits are widely distributed in the middle and lower reaches of the Yangtze River and are the most important deposit types in this region. Based on the collection, collation and analysis of previous research data and methods, the regional geological characteristics, ore composition and mineral dressing process of Xulou Iron Mine in Huaibei are fully understood. Combined with the knowledge of petrology, mineralogy, mineralogy and geochemistry, the following conclusions are drawn: (1) the geochemical characteristics of intrusive rock, iron ore and surrounding rock of Xulou Iron Mine are analyzed. The metallogenic environment of Xulou Iron Mine is distinguished. It can be concluded that the surrounding rock of Xulou ore deposit was formed in the early Cambrian reduction environment; the intrusive rock is neutral diorite and belongs to deep magma; according to 未 ce: 0.831.00, the formation environment of Xulou iron deposit belongs to redox environment. The ore-forming reason is related to hydrothermal activity. (2) the medium acid rock with less iron content can precipitate a large amount of iron material under the action of high temperature for the formation of skarn iron ore deposit. The iron content of carbonate rock in the periphery of Xulou Iron Mine is lower than that in the surrounding rock, indicating that carbonate rock is not the main source of iron ore production in the study area. It is further proved that the source of ore-forming iron in Xulou Iron Mine is mainly intrusive rock. (3) through the diagrammatic analysis of the genesis of magnetite, It is concluded that Xulou Iron Mine belongs to skarn type contact metasomatism iron deposit. (4) by analyzing the composition and phase of Xulou iron ore tailings, combined with empirical formula, the economic grade of tailings recovery is calculated. It is found that 6.23% iron content in the tailings of Xulou Iron Mine has the economic benefit of secondary recovery, and it is also found that the tailings of Xulou Iron Mine can be used to prepare firing free bricks and be used as soil improvers.
【学位授予单位】：中国地质大学（北京）
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：P618.31;TD981
[Abstract]:Huaibei Xulou Iron Mine is located in the middle and lower reaches of the Yangtze River. As one of the main copper and iron polymetallic mineral bases in China skarn deposits are widely distributed in the middle and lower reaches of the Yangtze River and are the most important deposit types in this region. Based on the collection, collation and analysis of previous research data and methods, the regional geological characteristics, ore composition and mineral dressing process of Xulou Iron Mine in Huaibei are fully understood. Combined with the knowledge of petrology, mineralogy, mineralogy and geochemistry, the following conclusions are drawn: (1) the geochemical characteristics of intrusive rock, iron ore and surrounding rock of Xulou Iron Mine are analyzed. The metallogenic environment of Xulou Iron Mine is distinguished. It can be concluded that the surrounding rock of Xulou ore deposit was formed in the early Cambrian reduction environment; the intrusive rock is neutral diorite and belongs to deep magma; according to 未 ce: 0.831.00, the formation environment of Xulou iron deposit belongs to redox environment. The ore-forming reason is related to hydrothermal activity. (2) the medium acid rock with less iron content can precipitate a large amount of iron material under the action of high temperature for the formation of skarn iron ore deposit. The iron content of carbonate rock in the periphery of Xulou Iron Mine is lower than that in the surrounding rock, indicating that carbonate rock is not the main source of iron ore production in the study area. It is further proved that the source of ore-forming iron in Xulou Iron Mine is mainly intrusive rock. (3) through the diagrammatic analysis of the genesis of magnetite, It is concluded that Xulou Iron Mine belongs to skarn type contact metasomatism iron deposit. (4) by analyzing the composition and phase of Xulou iron ore tailings, combined with empirical formula, the economic grade of tailings recovery is calculated. It is found that 6.23% iron content in the tailings of Xulou Iron Mine has the economic benefit of secondary recovery, and it is also found that the tailings of Xulou Iron Mine can be used to prepare firing free bricks and be used as soil improvers.
【学位授予单位】：中国地质大学（北京）
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：P618.31;TD981
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