生物质还原提钒废渣回收有价金属的试验研究  

Experimental research on the recycling of valuable metal elements with the extracted-vanadium residues reduced by biomass

作　　者：高阳 谢华清 周密[1,3] 郭锐 秦梦鑫[1] 王征宇 代兵 Gao Yang;Xie Huaqing;Zhou Mi;Guo Rui;Qin Mengxin;Wang Zhengyu;Dai Bing(School of Metallurgy,Northeastern University,Shenyang 110819,Liaoning,China;Institute for Frontier Technologies of Low-carbon Steelmaking,Northeastern University,Shenyang 110819,Liaoning,China;Key Laboratory of Metallurgical Emission Reduction&Resources Recycling,Ministry of Education(Anhui University of Technology),Ma′anshan 243002,Anhui,China)

机构地区：[1]东北大学冶金学院,辽宁沈阳110819 [2]东北大学低碳钢铁前沿技术研究院,辽宁沈阳110819 [3]冶金减排与资源综合利用教育部重点实验室(安徽工业大学),安徽马鞍山243002

出　　处：《钢铁钒钛》2023年第4期89-95,111,共8页Iron Steel Vanadium Titanium

基　　金：国家自然科学基金资助项目(52074081);中央高校基本科研业务费(N2225043);冶金减排与资源综合利用教育部重点实验室开放课题(JKF19-06)。

摘　　要：为解决提钒废渣堆积造成的土地资源浪费、污染环境等问题,以两种提钒废渣为研究对象,采用生物质作为还原剂进行高温还原试验,对还原产物进行组分分析、物相分析等,探究吸氧比、时间、温度对还原过程、产物金属化率的影响。结果表明,水浸提钒废渣在吸氧比为4、还原温度为1450℃、还原时间为2 h的条件下,铁金属化率可达到58.67%;沉钒废渣在吸氧比为1.75、还原温度为1550℃、还原时间为4 h的条件下,铬金属化率可达到99.19%。将两种提钒废渣混合,进行了生物质高温还原制备铬铁合金的初步试验验证,对在吸氧比4、还原时间3 h、反应温度1550℃条件下所得的还原产物进行熔分,合金中铬含量为61.51%,铁含量为31.05%,元素含量满足FeCr65C4.0牌号合金的国家标准要求。In order to solve the problems of land resources waste and environmental pollution caused by accumulation of vanadium extraction tailings,two kinds of vanadium extraction tailings were studied in this paper.Biomass was used as reducing agent for high temperature reduction experiment,and the component analysis and phase analysis of reduction products were carried out to explore the influences of oxygen absorption ratio,time and temperature on metallization rate of reduction products.The results show that the iron metallization rate can reach 58.67%when the oxygen absorption ratio is 4,the reduction temperature is 1450℃and the reduction time is 2 h.The chromium metallization rate of vanadium-precipitated waste slag can reach 99.19%when the oxygen absorption ratio is 1.75,the reduction temperature is 1550℃and the reduction time is 4 h.Two kinds of vanadium extracting tailings were mixed to prepare ferrochromium alloy by high temperature reduction of biomass.The preliminary experiment proved that the reduction product was melted under the condition of oxygen absorption ratio of 4,reduction time of 3 hours and reaction temperature of 1550℃.The content of chromium in the alloy was 61.51%,the content of iron was 31.05%,and the content of elements met the national standard requirements of FeCr65C4.0 alloy.

关 键 词：水浸提钒废渣 沉钒废渣 生物质 还原 铬铁合金 

分 类 号：X757[环境科学与工程—环境工程] TG144[一般工业技术—材料科学与工程]