磁—浮联合工艺回收某钒钛磁铁矿石中钛铁矿试验

发布时间：2019-06-06 05:50

【摘要】：为了回收陕西某难选原生钒钛磁铁矿石中的钛铁矿资源,在对矿石进行工艺矿物学研究基础上,对干式中磁抛废后的矿石进行了强磁预选—反浮选脱硫—浮选选钛工艺试验。结果表明:1该矿石属含硫高磷低品位钒钛磁铁矿石,钛主要以钛铁矿形式存在,占总钛的67.66%,主要呈浸染状产出,常发生榍石化,沿钛磁铁矿边缘或粒间嵌布,少数零星出现在脉石中;硫主要以黄铁矿形式存在;脉石矿物主要为透辉石、绿泥石、角闪石、斜长石等硅酸盐矿物。2矿石经粗粒中磁干式抛废—弱磁选铁—强磁预选富集钛—反浮选脱硫—浮选提纯钛铁矿的工艺流程处理,实现了对难选钛铁矿的高效回收,最终获得铁品位为55.12%、含钛10.17%、铁回收率为44.20%的铁精矿,以及Ti O2品位为48.01%、回收率为51.84%的钛精矿。实现了钛铁矿与比磁化系数接近的铁硅酸盐矿物等的有效分离。
[Abstract]:In order to recover ilmenite resources from a refractory primary vanadium-titanium magnet ore in Shaanxi Province, based on the study of technological Mineralogy of the ore, the process of strong magnetic pre-separation, reverse floatation desulphurization and floatation of titanium separation was carried out on the ore after dry medium magnetic throwing. The results show that: (1) the ore belongs to sulfur-containing high-phosphorus low-grade vanadium-titanium magnetic ore, titanium mainly exists in the form of ilmenite, accounting for 67.66% of the total titanium, mainly in the form of disseminated, often occurs sphenization, along the edge of ilmenite or interparticle intercalation, A small number of sporadic appear in gangue; Sulfur mainly exists in the form of pyrite. The gangue minerals are mainly diopside, chlorite, hornblende, plagioclase and other silicate minerals. 2 the technological process of purifying ilmenite by magnetic dry throwing, weak magnetic separation, strong magnetic pre-separation, reverse floatation desulphurization and flotation purification of ilmenite, The high efficiency recovery of refractory ilmenite was realized, and the iron concentrate with iron grade of 55.12%, titanium content of 10.17%, iron recovery of 44.20% and Ti O _ 2 grade of 48.01% and recovery of 51.84% was obtained. The effective separation of ilmenite from iron silicate minerals with close specific magnetization coefficient has been realized.
【作者单位】：陕西龙钢(集团)大西沟矿业有限公司;
【分类号】：TD95

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