广西兴业某锰矿选矿试验的研究[J].docVIP

广西兴业某锰矿选矿试验研究 韦连军，雷满齐，黄庆柒，廖江南(1．广西地质矿产测试研究中心，广西南宁520023；2．广西地矿资源勘查开发有限责任公司，广西南宁530023) 摘要：广西兴业某锰矿含锰23．59％，主要以软锰矿、硬锰矿的形式存在，原矿中还含镍015％，0．07％。通过洗矿、重选、磁选试验研究，确定原矿磨至0．8m，磁场强度为1 7000e，采用一31．12％、回收率为83．08％的锰精矿。锰0·20％，含钴0．10％，按原矿计算镍、钴的回收率分别为74．61％和75．25％，磁选工艺在锰得到合理分选的同时，有 关键词：软锰矿；硬锰矿；磁选 中图分类号：TD951．2 文献标识码：A 文章编号2010)02-0089-04 The test research of processing one manganese ore in Xingye, Guangxi province WEI Lian-jun1, LEI Man-qi1, HUANG Qing-qi1, LIAO Jian-gnan2 (1.Guangxi Test Research Centre of Geological Minerals Products, Nanning 520023, China; 2.Guangxi Geological and Mineral Resources Exploration and Development Co., Ltd., Nanning 520023, China) Abstract: The content of one Manganese ore In XingYe, GuangXi is about 23. 59%, and which mainly exist in the type of pyrolusite and psilomelanite. Nickel is of 0.15% and Cobalt is of 0.07%. By the experiments of ore washing, gravity separation and magnetic separation, the magnetic separating flowsheet of which grinding to -0.8mm, magnetic field intensity of 17000 Oe, one roughing and one cleaning was determined. The manganese concentrate is attained which the grade is of 31.12%, the recovery is of 83.08%, the content of Nickel is of 0. 20% and Cobalt is of 0.10%. Calculating with the ore, the recovery of Nickel and Cobalt are 74.61% and 75.25%, it was shown that: by the magnetic separating flowsheet, while the Manganese ore was rationally seperated, the Nickel and Cobalt can also be effectively comprehensive recovered. Key words: pyrolusite; psilomelanite; the magnetic separating 在现代工业中，锰及其化合物应用于国民经90％～95％，主要作为炼铁和炼钢过程中5％～10％的锰用于其它工业领域，如轻工业、建23．59％，主要以软锰矿、硬锰矿的形式0．15％，含钴0．07％。本文 1 原矿性质 1．1 矿物组成 试验研究矿样取自广西兴业县某锰矿，选取2mm混(部分洗矿试验矿样破5mm)。原矿中金属矿物主要是软锰矿、硬1，化学分析结果见表2。 从表2可以看出，原矿铁的含量较高，不利于0．446％，属高磷锰矿石。此外，原矿中伴生 1．2原矿嵌布粒度特性 原矿中硬锰矿多呈显微他形粒状、针状，常0．01～0．2mm0．02～0．2mm间；水锰矿呈他形微粒状，0．02mm左右。矿0．01～0．1mm0．01～0．1mm间。 1．3锰、铁、磷的赋存状态 矿石中锰主要以硬锰矿、软锰矿的形式存在， 2选矿试验研究 2．1 洗矿试验 洗矿的目的是通过抛弃锰矿的矿泥，从而达5mm、2mm两种粒度条件下进行洗矿对比试3