碱煮黑白钨渣与赤泥协同碳热还原回收制备铁锰钨锡合金  

Preparation of Fe-Mn-W-Sn alloy from alkali-boiled black-and-white tungsten slag and red mud by synergistic carbothermic reduction and recovery

作　　者：霍瑞浩 谢岁 邓攀[1] 曾智勇 廖春发[1] 王旭[1] HUO Ruihao;XIE Sui;DENG Pan;ZENG Zhiyong;LIAO Chunfa;WANG Xu(Faculty of Materials Metallurgy and Chemistry,Jiangxi University of Science and Technology,Ganzhou 341000,Jiangxi,China)

机构地区：[1]江西理工大学材料冶金化学学部,江西赣州341000

出　　处：《有色金属科学与工程》2023年第3期295-301,共7页Nonferrous Metals Science and Engineering

基　　金：国家重点研发计划“固废资源化”专项(2019YFC1907404);江西省重点研发计划项目(20192ACB70008);赣州市星火计划项目(赣市研发[2019]60号)。

摘　　要：基于赤泥中含有碱煮黑白钨渣碳热还原所需助熔剂和铁等有价金属,本文采用碱煮黑白钨渣与赤泥协同碳热还原回收制备铁锰钨锡合金,并分离砷、铅、铋等有害元素。通过考察碱煮黑白钨渣与赤泥质量比、还原剂用量、还原温度、熔炼时间对金属合金化率的影响,确定较优的协同处置碳热还原工艺条件为:碱煮黑白钨渣与赤泥质量比为1∶1、还原剂用量为8%、熔炼温度为1550℃、熔炼时间为120 min。在此条件下,铁、锰、铌、锡、钨、钽的合金化率分别为99.40%、23.75%、25.08%、89.46%、40.94%、17.53%;砷、铅、铋等有害元素还原进入烟尘。通过碱煮黑白钨渣与赤泥协同处置碳热还原的研究,既能回收有价金属,又减少了助熔剂等额外资源消耗,对资源化发展提供了新的研究方向。Based on the fact that red mud contains valuable elements such as flux and iron required for carbon-thermal reduction of alkali boiled black and white tungsten slag,Fe-Mn-W-Sn alloy was prepared by synergistic carbon-thermal reduction recovery of alkali-boiled black and white tungsten slag and red mud,and harmful elements such as arsenic,lead and bismuth were separated.By investigating the effects of different alkali-boiled black-and-white tungsten slag to red mud ratios,amount of reducing agent,reduction temperature and melting time on metal alloying rate,the best co-disposal carbon thermal reduction process conditions are determined that the mass ratio of alkali-boiled black-and-white tungsten slag and red mud is 1∶1,with the reducing agent amount of 8%,melting temperature of 1550℃and melting time of 120 min.Under these conditions,the alloying rates of iron,manganese,niobium,tin,tungsten and tantalum are 99.40%,23.75%,25.08%,89.46%,40.94%and 17.53%,respectively.Arsenic,lead,bismuth and other harmful elements are reduced into soot.Research on the cooperative disposal of carbon thermal reduction between alkali-boiled black-and-white tungsten slag and red mud can not only recover valuable metals but also reduce additional resource like flux,which provides a good idea for the development of resource utilization.

关 键 词：碱煮黑白钨渣 赤泥 协同 碳热还原 铁锰钨锡合金 

分 类 号：TF111.13[冶金工程—冶金物理化学] TG146.4[一般工业技术—材料科学与工程]