Selective Separation Experiments of As from Copper Dust Containing As
LI Xuepeng1, LIU Dachun1, WANG Juan2
1 National Engineering Laboratory for Vacuum Metallurgy, Kunming University of Science and Technology, Kunming 650093; 2 School of Mathematics and Statistics, Yunnan University, Kunming 650093
Abstract: In order to separate As from As-contained dust, the dust was treated by roasting at low temperature under nitrogen atmosphere. The influence of temperature, nitrogen flow rate and roasting time on the evaporation rate of As were discussed in this paper. The methods such as XRD analysis and thermogravimetric analysis were employed to study the evaporation process of As. The kinetics of As evaporation was also investigated. It was demonstrated that selective separation of As should be taken at low temperature in order to avoid evaporation loss of Zn, Pb at high temperature and producing arsenates which are hard to volatile. The evaporation rate of As was 95.68%, the content of arsenic in the slag was 0.79%, and other valuable metals were not volatile under the conditions of roasting temperature of 250 ℃, nitrogen flow rate of 300 mL/min and roasting time of 120 min. As was selectively separated from other valuable metals and was recovered in the form of As2O3 with a purity of 96.85%. It was demonstrated by kine-tic study that the selective separation process of As at low temperature was in accordance with the shrinking ore model in a certain range. The apparent activation energy was 19.71 kJ/mol and As evaporation process was controlled by internal diffusion.
李学鹏, 刘大春, 王娟. 含砷铜烟尘砷的选择性分离实验[J]. 材料导报, 2018, 32(18): 3110-3115.
LI Xuepeng, LIU Dachun, WANG Juan. Selective Separation Experiments of As from Copper Dust Containing As. Materials Reports, 2018, 32(18): 3110-3115.
1 陈为亮,王君,焦志良,等.炼铜烟尘综合利用技术与实践[C]∥第十六届中国科协年会—全国重有色金属冶金技术交流会论文集.昆明,2014. 2 Yuan H B. Thermodynamic research and experiment of white arsenic extraction from high arsenic fume by pyrometallurgy[J]. Yunnan Metallurgy,2011,40(6):27(in Chinese). 袁海滨.高砷烟尘火法提取白砷实验及热力学研究[J].云南冶金,2011,40(6):27. 3 Liao Y L, Peng Z Q, Zhou J, et al. Research on kinetics of leaching of arsenic from dust containing high arsenic[J]. Journal of Sichuan University (Engineering Science Edition),2015,47(3):200(in Chinese). 廖亚龙,彭志强,周娟,等.高砷烟尘中砷的浸出动力学[J].四川大学学报(工程科学版),2015,47(3):200. 4 Nie Y. Research of valuable metals recovery from high-arsenic copper dust[J]. China nonferrous metallurgy,2016(5):68(in Chinese). 聂颖.从高砷铜烟尘中综合回收有价金属的研究[J].中国有色冶金,2016(5):68. 5 Sun L D, Li J, Guang M, et al. Kinetics of sulfuric acid leaching of copper from copper smelting ashes[J].Mining and Metallurgical Engineering,2016,36(1):97(in Chinese). 孙乐栋,李杰,光明,等.炼铜烟灰硫酸浸出及铜浸出动力学研究[J].矿冶工程,2016,36(1):97. 6 Chen W B, Lu X W, Li Y L, et al. Study on process of removing arsenic from leaching residue of copper smelting ESP ash[J]. Inorganic Chemicals Industry,2016,48(5):48(in Chinese). 陈文波,鲁兴武,李俞良,等.铜冶炼电收尘烟灰浸出渣脱砷工艺研究[J].无机盐工业,2016,48(5):48. 7 Yang C, Li H, Liu Y. Study on recovery of Cu, Zn from copper converter dust[J]. Hydrometallurgy of China,2016,35(2):120(in Chinese). 杨超,李辉,刘岩.从铜转炉烟灰中回收铜锌试验研究[J].湿法冶金,2016,35(2):120. 8 Yuan H B, Zhu Y Y, Zhang J B, et al. Process of high-arsenic dust containing tin evaporation from DC submerged arc furnace[J]. Journal of Central South University(Science and Technology),2013,44(6):2200(in Chinese). 袁海滨,朱玉艳,张继斌,等.高砷含锡烟尘直流矿热炉挥发的工艺[J].中南大学学报(自然科学版),2013,44(6):2200. 9 Zhou R H. Treatment process of converter dust collection dust[J]. Nonferrous Metals (Extractive Metallurgy),1989(4):40(in Chinese). 周荣华.转炉电收尘烟灰处理工艺[J].有色金属(冶炼部分):1989(4):40. 10 Zhu L D, Lu X W. Comprehensive recovery of copper smelting ESP dust[J].China Metallurgy,2016,26(6):6(in Chinese). 朱来东,鲁兴武.铜冶炼电收尘烟灰综合回收工艺[J].中国冶金,2016,26(6):6. 11 Han G H. Study on recovery of copper, zinc and arsenic removal from high arsenic acid leaching liquor [D]. Urumqi: Xinjiang University,2015(in Chinese). 韩光辉.高砷酸性浸出液中回收铜、锌及除砷的研究[D].乌鲁木齐:新疆大学,2015. 12 Fan Y Q, Cai B, Du C Y. Hydrometallurgical method for the extraction of copper and zinc from copper dusts[J]. China Nonferrous Metallurgy,2016,2:59(in Chinese). 樊有琪,蔡兵,杜春云.铜烟尘提取铜和锌的湿法工艺探索[J].中国有色冶金,2016,2:59. 13 Zhang R L, Qiu K Q, Xie Y J, et al. Treatment process of dust from flash smelting furnace at copper smelter by oxidative leaching and dearsenifying process from leaching solution[J]. Journal of Central South University (Science and Technology),2006,37(1):73(in Chinese). 张荣良,丘克强,谢永金,等.铜冶炼闪速炉烟尘氧化浸出与中和脱砷[J].中南大学学报(自然科学版),2006,37(1):73. 14 Xu Z F, Li Q, Nie H P. Pressure leaching technique of smelter dust with high-copper and high-arsenic[J]. Transactions of Nonferrous Metals Society of China,2010(20):s176(in Chinese). 徐志峰,李强,聂华平.高砷铜烟尘的氧压浸出工艺[J].中国有色金属学报,2010(20):s176. 15 Wu Y L, Xu Z F, Hao S T. Thermodynamics and kinetics of alkaline leaching of arsenic in copper smelting dust[J].Nonferrous Me-tals (Extractive Metallurgy),2013(4):3(in Chinese). 吴玉林,徐志峰,郝士涛.炼铜烟灰碱浸脱砷的热力学及动力学[J].有色金属(冶炼部分),2013(4):3. 16 Chen W, Shen Q H, Wang D J, et al. Study on the new process for treating copper converter dusts[J]. Non-ferrous Mining and Metallurgy,2003,19(3):45(in Chinese). 陈雯,沈强华,王达建,等.铜转炉烟尘选冶联合处理新工艺研究[J].有色矿冶,2003,19(3):45. 17 Li L, Zhang R J, Liao B, et al. Separation of As from As and Sb contained smoke dust by selective oxidation[J]. The Chinese Journal of Process Engineering,2014,14(1):71(in Chinese). 李磊,张仁杰,廖彬,等.砷锑烟尘中砷与锑的选择性氧化分离[J].过程工程学报,2014,14(1):71. 18 黄位森.锡[M].北京:冶金工业出版社,2009:290. 19 Ou F W. Plant practice of top-blown converter treating low grade scrap of copper [D]. Kunming: Kunming University of Science and Technology,2014(in Chinese). 欧福文.低品位废杂铜顶吹转炉熔炼的生产实践[D].昆明:昆明理工大学,2014. 20 Jiang T, Huang Y F, Zhang Y B, et al. Behavior of arsenic in arsenic-bearing iron concentrate pellets by preoxidizing-weak reduction roasting process[J]. Journal of Central South University(Science and Technology),2010,41(1):1(in Chinese). 姜涛,黄艳芳,张元波,等.含砷铁精矿球团预氧化-弱还原焙烧过程中砷的挥发行为[J].中南大学学报(自然科学版),2010,41(1):1. 21 李洪桂.冶金原理[M].北京:科学出版社,2017:291. 22 Zhao H D, Gu G H, Chu Y G, et al. Kinetics of oxidative ammonia leaching of high alkali gangue and low grade copper oxidized ore[J]. Hydrometallurgy of China,2014,33(6):416(in Chinese). 赵洪冬,顾帼华,褚亦功,等.高碱度脉石低品位氧化铜矿氧化氨浸动力学[J].湿法冶金,2014,33(6):416. 23 孟繁明.冶金宏观动力学[M].北京:冶金工业出版社,2014:16.
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2018, Vol. 32 
