陕南地区角闪岩型难选金红石矿选矿试验研究.docVIP

陕南地区角闪岩型难选金红石矿选矿试验研究 刘明宝1,2，阎赞1,2，印万忠3 (1.陕西省尾矿资源综合利用重点实验室 陕西商洛，726000；2.商洛学院化学工程与现代材料学院，陕西商洛，726000； 3.东北大学资源与土木工程学院，辽宁沈阳，110004) 摘要：陕南地区某角闪岩型难选金红石矿含TiO2 3.35%，主要脉石矿物为石英、白云石、绿泥石等，有用矿物嵌布粒度微细，矿物嵌布关系复杂，分选难度大。采用摇床抛尾，粗精矿再磨后浮选金红石，浮选精矿酸洗后再脱硫的流程可获得TiO2 90.56%，回收率为50.24%的金红石精矿，其中含S 0.025%、P 0.021%、TFe 0.56%，精矿指标达到天然金红石精矿二级标准，试验研究可为陕南地区金红石矿的开发利用提供良好的技术借鉴。 关键词：金红石选矿，浮选，组合用药 中图分类号：TD973；文献标志码：A Beneficiation Study of an amphibolite-type Refractory Rutile Ore in Southern Shaanxi LIU Ming-bao1,2, YAN zan1,2 , YIN Wan-zhong3 Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources, Shangluo Shaanxi 726000; 2.College of Chemical Engineering and Modern Material，Shangluo University,?Shangluo Shaanxi 726000; 3. College of Resources and Civil Engineering, Northeasten University, Shenyang 110004, China) Abstract: The amphibolite-type rutile ore in Southern Shaanxi contains 3.06% TiO2, and the dolomite, chlorite as well as quartz et al are the main gangue minerals. It is very difficult to beneficiate due to the fine particle size of valuable mineral and the complex embedded relationship. A rutile concentrate with TiO2 grade of 90.56% and recovery of 50.24% can be obtained using a joint beneficiation process, namely discarding tailings by shaker-rough concentrate regrinding-flotation-acid washing -desulfurization?flotation, and the contents of impurities such as S, P, TFe are 0.025%, 0.021%, 0.56%, respectively. The concentrate meet the GradeⅡstandards of natural rutile concentrate and this study provides some technical reference for exploiting the rutile source in Southern Shaanxi. Keywords: rutile beneficiation; flotation; reagents combinations 金红石资源主要包括原生金红石矿和金红石砂矿两大类型因其含钛量高、杂质少，所以金红石是生产金红石型钛白粉的最佳原料以及高档电焊的必需原料之一，同时也是生产四氯化钛、金属钛钛合金以及搪瓷制品的优质原料。4. 71%。但该地区金红石矿却具有矿石组成复杂，嵌布粒度微细的矿物学特性，该特性导致陕南地区的金红石至今未被大规模开发利用。TiO2分布情况分别如表1和表2所示。 图1 金红石矿样XRD图谱 Fig.1 XRD pattern of rutile ore 表1原矿多元素分析 Table 1 Multi-element analysis of raw mineral 成份 TiO2 SiO2 CaO MgO TFe Al2O3 S P 其他 含量/%