吉林某铌钽多金属矿石中元素的赋存状态及对选矿工艺的影响

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英文篇名：The Occurrence State of Elements in a Nb-Ta Polymetallic Ore and its Influence on Mineral Processing in Jilin Province 作者：吕燕 ; 周家云 ; 惠博 ; 田恩源 英文作者：Lv Yan;Zhou Jiayun;Hui Bo;Tian Enyuan;Sichuan Tourism College;Instiute of Multipurpose Utilization of Mineral Resources, CAGS, Research Center of Multiparpose Utilization of Metal Mineral Resources of China Geological Survey; 关键词：铌钽 ; 赋存状态 ; 综合利用 ; 选矿影响因素 英文关键词：Niobium and tantalum;;Occurrence state;;Comprehensive utilization;;Influence factors of mineral processing 中文刊名：KCZL 英文刊名：Multipurpose Utilization of Mineral Resources 机构：四川旅游学院;中国地质科学院矿产综合利用研究所中国地质调查局金属矿产资源综合利用技术研究中心; 出版日期：2019-04-25 出版单位：矿产综合利用 年：2019 期：No.216 基金：MLA技术应用于四川钒钛磁铁矿综合利用中的关键问题研究,四川省应用基础研究计划项目(2012JY0099)资助 语种：中文; 页：KCZL201902017 页数：6 CN：02 ISSN：51-1251/TD 分类号：88-93

摘要

本文利用矿相显微镜、扫描电子显微镜、X射线能谱探针和化学分析等手段对某斑岩型铜矿的工艺矿物学特征进行了研究,重点分析了铌钽的赋存状态,讨论了影响铌、钽、锆、钇和钾回收的矿物学因素。结果表明铌和钽没有独立的工业矿物,二者分散分布,铌以类质同象形式集中分布在辉石中,相对集中系数81.118%。因此,可以通过富集辉石来回收矿石中的铌元素。如果全部回收辉石的话,铌的理论回收率为81.118%;矿物鉴定和定量分析表明,矿石中的碱性辉石含量为52.3%,碱性长石为43.2%,铁氧化物为1.5%,其它矿物为1.5%。矿石中未发现钪的独立矿物。粒度统计结果显示,矿石嵌布紧密,粒度微细,难以解离。由于矿石为碱性岩石,富钾,且铌品位超过了工业品位,因此建议应该在充分利用钾的基础上,综合回收利用铌,提高经济效益,达到矿石的综合利用。根据矿石的矿物组成以及各矿物的物理化学性质,建议采用选矿和冶金联合工艺对有价元素进行回收。
        In this paper, the process mineralogy of a porphyry copper deposit have been studied by means of metallographic microscope, scanning electron microscope, x-ray energy spectrum probe and chemical analysis, the occurrence of niobium and tantalum elements are analyzed emphatically, and the mineralogical factors affecting the recovery of niobium, tantalum, zirconium, yttrium and potassium elements are discussed.The results show that niobium and tantalum have no independent industrial minerals and they are dispersed.niobium is concentrated in pyroxene in the form of isomorphism with a relative concentration coefficient of 81.118%.Therefore, niobium can be recovered from ore by enrichment of pyroxene. If all pyroxene is recovered, the theoretical recovery of niobium is 81.118%. Mineral identification and quantitative analysis show that the contents of alkaline pyroxene, alkaline feldspar, iron oxide and other minerals are 52.3%,43.2%, 1.5% and 1.5% respectively. No independent mineral of scandium was found in the ore. The results of particle size statistics show that the ore is closely embedded and fine in size, so it is difficult to be dissociated. Because the ore is alkaline rock, rich in potassium, and the grade of niobium exceeds the industrial grade, it is suggested that the comprehensive utilization of niobium should be achieved on the basis of making full use of potassium in order to improve the economic benefit and achieve the comprehensive utilization of ore. According to the mineral composition and the physicochemical properties of each mineral,it is suggested that the valuable elements should be recovered by the combined mineral processing and metallurgy process.

引文

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