攀枝花钒钛磁铁矿伴生元素镓钴镍的富集规律

发布时间：2018-05-11 23:08

本文选题：层状岩体 + 镓　；参考：《成都理工大学》2017年硕士论文

【摘要】：攀枝花钒钛磁铁矿矿石有着丰富的有益元素,其中铁、钒、钛被开发利用,其他的稀有分散元素镓、铌、锗、钪以及伴生元素钴、镍、铂族元素等,具有很高的经济价值,到目前为止,却没有被有效的利用。论文以《攀枝花市钒钛磁铁矿中伴生稀散元素概况研究》综合研究项目为依托,以攀枝花钒钛磁铁矿朱家包包矿段为例,详细分析了该矿段中岩矿石组构、矿物成分和含量、地球化学特征。将攀枝花层状岩体分成不同岩相带,分析不同相带镓钴镍的分布特征。然后运用相关分析和聚类分析方法,重点对不同岩相带的镓、钴、镍与主量元素、微量元素以及稀土元素的相关性和聚类性进行分析,初步得出与镓钴镍具有相关性的元素。进而对攀枝花不同岩相带中的镓、钴、镍的富集规律进行了综合研究和探讨。综合得出以下的结论:(1)攀枝花层状岩体中不同岩(矿)石的镓含量由低到高分别为:辉石岩、斜长岩、辉长岩、磁铁矿石;钴含量由低到高分别为:斜长岩、辉长岩、辉石岩、磁铁矿石。钴在斜长岩中含量低,明显低于其它几类岩石,主要富集在块状磁铁岩中;镍含量由低到高分别为:斜长岩、辉石岩、辉长岩、磁铁矿石,可以看出镍主要富集在块状磁铁矿石中。(2)不同岩相带镓含量由低到高分别为:边缘带—上部岩相带—下部岩相带—底部含矿带;不同岩相带钴含量由低到高分别为:边缘带—上部岩相带—下部岩相带—在底部含矿带;不同岩相带镍含量由低到高分别为:下部岩相带—边缘带—上部岩相带—底部含矿带。(3)在攀枝花矿区岩石中,镓与钛、铁、钴、锌具有显著的正相关性,与硅负相关性显著;钴与钛、铁、镓、钒、锌元素具有显著的正相关性,与硅、锶负相关性显著;镍与镁、铬、锌等元素呈现出好的正相关关系,与铝等元素的负相关性显著;镓钴镍与稀土元素之间无明显的关系。在磁铁矿中,镓与钪、钛负相关性好,镓与铁正相关性好。(4)综合表明由底部向顶部,随着岩浆由超基性向基性演化的过程中,SiO2含量的增加,以及TiO2等的减少,镓总体呈现出逐渐减少的趋势。在攀枝花地区,镓最富集的矿区为攀枝花矿区,镓富集岩石类型为富含磁铁矿的辉长岩,铁含量越高,越富集镓,富集矿石为磁铁矿石。攀钢选矿过程中,镓主要进入铁精矿。综合来看,在铁矿开发利用过程中,镓具有很高的综合利用价值。Co与Ni主要富集在硫化物相和磁铁矿中,在对攀枝花钒钛磁铁矿综合利用时,也具有综合利用价值。
[Abstract]:Panzhihua vanadium titanomagnetite ore is rich in beneficial elements, among which iron, vanadium and titanium are exploited and utilized. Other rare dispersed elements such as gallium, niobium, germanium, scandium and associated elements cobalt, nickel and platinum have high economic value. So far, it has not been used effectively. In this paper, based on the comprehensive research project "General situation of associated dilute elements in Panzhihua vanadium titanomagnetite" and taking the Zhujia-wrapped ore section of Panzhihua vanadium titanomagnetite as an example, the fabric, mineral composition and content of rock and ore in this section are analyzed in detail. Geochemical characteristics. Panzhihua layered rock mass is divided into different lithofacies zones and the distribution characteristics of gallium cobalt and nickel in different facies zones are analyzed. Then, the correlation and clustering of gallium, cobalt and nickel with major elements, trace elements and rare earth elements in different lithofacies zones were analyzed by correlation analysis and cluster analysis, and the elements with correlation with gallium, cobalt and nickel were preliminarily obtained. Furthermore, the enrichment law of gallium, cobalt and nickel in different lithofacies zones of Panzhihua is studied and discussed. The conclusion is as follows: (1) the gallium content of different rocks (ore) in Panzhihua stratified rock is from low to high: pyroxenite, clinoclase, gabbro, magnetite, cobalt content from low to high are: clinoclase, pyroxenite, Magnetite. The content of cobalt in the plagioclase is low, which is obviously lower than that of other rocks, and is mainly concentrated in the massive magnetite, and the nickel content from low to high is: clinoclase, pyroxenite, gabbro, magnetite, etc. It can be seen that nickel is mainly enriched in massive magnetite.) the gallium content in different lithofacies zones from low to high is: marginal zone, upper lithofacies zone, lower lithofacies zone and bottom ore-bearing belt; The cobalt content in different lithofacies zones from low to high is: marginal zone-upper lithofacies zone-lower lithofacies zone-ore-bearing belt at the bottom; The nickel content of different lithofacies zones from low to high is: lower lithofacies zone, marginal zone, upper lithofacies belt and bottom ore-bearing belt. In Panzhihua mining area, gallium has significant positive correlation with titanium, iron, cobalt and zinc, and significant negative correlation with silicon. Cobalt has significant positive correlation with titanium, iron, gallium, vanadium, zinc, and negative correlation with silicon, strontium, nickel and magnesium, chromium, zinc, etc. There is no obvious relationship between gallium, cobalt, nickel and rare earth elements. In magnetite, the negative correlation between gallium and scandium and titanium, and the positive correlation between gallium and iron are good. The results show that the content of SiO2 increases with the evolution of magma from ultrabasic to basic, and the content of SiO2 decreases with the change of magma from the bottom to the top, as well as the decrease of TiO2, etc. The gallium as a whole shows a decreasing trend. In Panzhihua area, the most enriched gallium ore area is Panzhihua mining area. The gallium enriched rock type is magnetite rich gabbro. The higher the iron content is, the more gallium is enriched and the rich ore is magnetite. During the processing of Panzhihua Iron and Steel Company, gallium mainly enters iron concentrate. In the process of development and utilization of iron ore, gallium has high comprehensive utilization value. Co and Ni are mainly enriched in sulphide phase and magnetite, and also have comprehensive utilization value in the comprehensive utilization of Panzhihua vanadium titanomagnetite.
【学位授予单位】：成都理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P574

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