滇东北镇雄黑树矿区高硫极贫铁硫磺渣铁资源回收利用  

Multipurpose utilization of iron resources in pyrite cinder with high sulfur and extremely poor iron in Heishu Mining Area,Zhenxiong County,Northeast Yunnan Province

作　　者：李小赛[1] 张佳文[1] 王裕先[1] 蔡剑辉[1] 方景玲 魏友华[2] 耿新霞[1] 彭强[2] LI Xiaosai;ZHANG Jiawen;WANG Yuxian;CAI Jianhui;FANG Jingling;WEI Youhua;GENG Xinxia;PENG Qiang(MNR Key Laboratory of Metallogeny and Mineral Assessment,Institute of Mineral Resources,Chinese Academy of Geological Sciences,Beijing 100037,China;Geomathematics Key Laboratory of Sichuan Province,Chengdu University of Technology,Chengdu 610059,China)

机构地区：[1]中国地质科学院矿产资源研究所、自然资源部成矿作用与资源评价重点实验室,北京100037 [2]成都理工大学数学地质四川省重点实验室,四川成都610059

出　　处：《中国矿业》2024年第11期28-38,共11页China Mining Magazine

基　　金：中国地质调查局地质调查二级项目资助(编号:12120113086700);中国地质科学院矿产资源研究所基本科研业务费项目资助(编号:kk2010);中国地质科学院基本科研业务费项目资助(编号:JKYQN202323)。

摘　　要：滇东北地区硫磺渣堆存量巨大,长期以来难以被综合利用,并产生了显著的环境地质问题。对镇雄县黑树矿区硫磺渣开展铁资源回收利用研究,以期通过选矿试验获得高品质铁精矿,从而为该地区硫磺渣综合利用提供一种有效实用的技术方法。黑树矿区硫磺渣属于一类硫含量大于2%、全铁含量小于30%的弱磁性高硫极贫铁硫磺渣,针对此类硫磺渣开展选矿探索试验、铁精矿回收试验和铁精矿反浮选脱硫试验研究。研究结果表明,采用湿式磁-重联选主干流程能够有效富集铁、脱除有害杂质磷;继而采用反浮选脱硫工艺,可以获得铁含量高于60%、磷含量低于0.25%、硫含量低于0.30%的铁精矿,满足炼铁用铁矿石工业指标要求,铁回收率达到49.08%。因此,建立“磁-重联选+反浮选”选矿流程用来进行高硫极贫铁硫磺渣的选铁,主干流程不产生二次污染,对环境友好,有较好的应用前景。对滇东北地区资源化、减量化和无害化处置硫磺渣等硫铁矿固废,以及实现滇东北地区长江上游生态屏障作用具有重要意义。There is a large amount of pyrite cinder in Northeast Yunnan Province,which is difficult for multipurpose utilization,and has caused significant environmental geological problems.In this paper,the pyrite cinder of Heishu Mining Area in Zhenxiong County of Northeast Yunnan Province is taken to conduct a multipurpose utilization study for iron resources,in order to obtain high-quality iron concentrate by the beneficiation test,so as to provide an effective and practical technical method for the multipurpose utilization of pyrite cinder in this area.The pyrite cinder in Heishu Mining Area is weak magnetic,and has high sulfur content more than 2% and extremely poor iron content less than 30%.In this paper,systematic beneficiation test on this type of pyrite cinder has been carried out,including the exploration test,iron concentrate recovery test and reverse flotation desulfurization test.The research results show that the main process of wet magnetic-gravity method can effectively enrich the useful component iron,and effectively remove the harmful component phosphorus.And then iron concentrate with iron content over 60%,phosphorus content below 0.25% and sulfur content below 0.30% can be obtained by the reverse flotation desulfurization test,to meet the requirements of industrial indicators for iron ore used in ironmaking,while the effective recovery rate is 49.08%.Therefore,it has a bright future that the beneficiation process of“magnetic-gravity and reverse flotation”used for multipurpose utilization for iron resources by using pyrite cinder with high sulfur and extremely poor iron,especially the main beneficiation process is friendly to the environment which does not produce secondary pollution.The success of beneficiation test for iron resource by using pyrite cinder of Heishu Mining Area is of great significance for the resource utilization,reduction and harmless disposal of pyrite cinder and other solid waste in Northeast Yunnan Province,and to fulfill the role of ecological barrier in the upper reaches of

关 键 词：滇东北 硫磺渣 选矿试验 铁精矿 综合利用 

分 类 号：TD98[矿业工程—选矿] X753[环境科学与工程—环境工程]