Optimization of recycling copper from copper oxide smelting slag by response surface methodology

doi:10.11949/j.issn.0438-1157.20171609

Abstract

Abstract:

The copper smelting slag with high copper content from Jiangxi has high economic value. Due to the copper mineral in the copper slag is mainly oxidized ore and the surface of the sulfide ore is oxidized, the copper recovery rate is low and the economic efficiency is poor. In this study, the copper oxide is activated by the addition of activator. To optimize the process conditions, the reaction surface methodology and the center composite design principle are used to investigate the response of the calcium oxide, sodium sulfide and Z-200 collector. The results show that the amount of Z-200 is the main factor affecting the grade and recovery rate of concentrate, and there are interaction effects among the response factors. The flotation index of close circuit test was achieved under the optimum conditions:CaO of 25 g/t, Na₂S of 500 g/t and Z-200 of 100 g/t. The average grade of Cu in flotation concentrate is 12%, and the copper recovery is 86.57%, which proved that the flotation optimized process can obtain better recovery effect.

Key words: copper oxide, copper slag, activation, flotation, response surface methodology, mathematical modeling

摘要：

江西某炼铜炉渣含铜量高，具有较高的经济价值。由于该铜渣中铜矿物以氧化矿为主，且硫化矿表面被氧化，直接浮选铜回收率低、经济效益差。通过添加活化剂，活化氧化铜矿物，并利用响应曲面中心复合设计原理对浮选工艺条件进行优化，研究氧化钙、硫化钠、Z-200对浮选效果的响应。结果表明，Z-200用量是影响精矿品位和回收率的主要因素，且各响应因素间存在交互效应，在CaO用量为25 g/t，Na₂S用量为500 g/t，Z-200用量为100 g/t的最优条件下，闭路试验获得精矿平均品位12%，精矿铜回收率为86.57%，采用该浮选优化工艺能获得较好的回收效果。

关键词: 氧化铜, 铜渣, 活化, 浮选, 响应曲面法, 数学模拟

CLC Number:

TD923

WANG Anqi, WANG Yongliang, YE Liping, LU Yonggang, QIAN Peng, YE Shufeng. Optimization of recycling copper from copper oxide smelting slag by response surface methodology[J]. CIESC Journal, 2018, 69(7): 3018-3028.

王安琪, 王永良, 叶礼平, 鲁永刚, 钱鹏, 叶树峰. 响应曲面法优化氧化铜渣浮选提铜工艺[J]. 化工学报, 2018, 69(7): 3018-3028.

References 30

[1]	潘虹. 2013年铜市场回顾及2014年展望[J]. 有色金属工程, 2013, 4(1):5-6. PAN H. Copper Market Review in 2013 and Outlook for 2014[J]. Nonferrous Metals Engineering, 2013, 4(1):5-6.
[2]	陈淑萍, 伍赠玲, 蓝碧波, 等. 火法炼铜技术综述[J]. 铜业工程, 2010, (4):44-49. CHEN S P, WU Z L, LAN B B, et al. Summarize on the technology of copper pyrometallurgy[J]. Copper Engineering, 2010, (4):44-49.
[3]	李博, 王华, 胡建杭, 等. 从铜渣中回收有价金属技术的研究进展[J]. 矿冶, 2009, 18(1):44. LI B, WANG H, HU J H, et al. Progress in recovery technology of valuable metals from copper slag[J]. Mining & Metallurgy, 2009, 18(1):44.
[4]	吴龙, 郝以党. 铜渣资源化利用现况及高效化利用探讨[J]. 中国有色冶金, 2015, 44(2):61-64. WU L, HAO Y D. The investigation of utilization status of copper slag resources and efficient utilization[J]. China Nonferrous Metallurgy, 2015, 44(2):61-64.
[5]	刘大星, 蒋开喜, 王成彦. 铜湿法冶金技术的现状及发展趋势[J]. 中国有色冶金, 2000, (4):1-5. LIU D X, JIANG K X, WANG C Y. Situation and developing trend of copper hydrometalurgy[J]. China Nonferrous Metallurgy, 2000, (4):1-5.
[6]	陈远望. 智利铜炉渣贫化方法概述[J]. 世界有色金属, 2010, (9):56-62. CHEN Y W. Clean of copper smelting slag in chile[J]. World Nonferrous Metals, 2010, (9):56-62.
[7]	VAISBURD S, BERNER A, BRANDON D G, et al. Slags and mattes in vanyukov's process for the extraction of copper[J]. Metallurgical & Materials Transactions B, 2002, 33(4):551-559.
[8]	王珩. 炼铜转炉渣中铜铁的选矿研究[J]. 有色矿山, 2003, 32(4):19-23. WANG H. Study on copper and iron concentrating from coverter slag of copper smelting[J]. Nonferrous Mines, 2003, 32(4):19-23.
[9]	张林楠, 张力, 王明玉, 等. 铜渣贫化的选择性还原过程[J]. 有色金属, 2005, 57(3):44-47. ZHANG L N, ZHANG L, WANG M Y, et al. Research on selective reducing impoverishment process of copper slag[J]. Nonferrous Metals, 2005, 57(3):44-47.
[10]	周中元. 铜冶炼渣综合回收研究[J]. 低碳世界, 2015, (19):153-154. ZHOU Z Y. Study on comprehensive recovery of copper smelting residue[J]. Low Carbon World, 2015, (19):153-154.
[11]	张东阳, 纪学义. 废杂铜冶炼渣的贫化研究[J]. 中国金属通报, 2017, (7):66-67. ZHANG D Y, JI X Y. Study on the depletion of waste copper smelting slag[J]. China Metal Bulletin, 2017, (7):66-67.
[12]	朱心明, 陈茂生, 宁平, 等. 铜渣的湿法处理现状[J]. 材料导报, 2013, 27(S2):280-284. ZHU X M, CHEN M S, NING P, et al. Research status of wet process for copper slag[J]. Materials Review, 2013, 27(S2):280-284.
[13]	徐晓衣, 俞献林, 艾光华. 某含铜转炉渣回收铜浮选试验研究[J]. 有色金属科学与工程, 2017, 8(6):75-79. XU X Y, YU X L, AI G H. Experimental study on flotation of copper recovery from a copper converter slag[J]. Nonferrous Metals Science and Engineering, 2017, 8(6):75-79.
[14]	宋温, 刘晓蕾. 铜冶炼转炉渣选铜的试验研究[J]. 有色金属, 2001, 53(3):78-80. SONG W, LIU X L. Study on copper concentrating from converter slag of copper smelter[J]. Nonferrous Metals, 2001, 53(3):78-80.
[15]	魏明安. 铜转炉渣选矿回收技术研究[J]. 矿冶, 2004, 13(1):38-41. WEI M A. Study on mineral processing technology of copper converter cinder[J]. Mining and Metallurgy, 2004, 13(1):38-41.
[16]	王周和. 金口岭铜矿转炉渣选铜工艺技术特点及生产实践[J]. 有色金属(选矿部分), 1998, (6):12-16. WANG Z H. Technical characteristics and production practice of converter technology for converter slag in jinkouling copper mine[J]. Nonferrous Metals (Mineral Processing Part), 1998, (6):12-16.
[17]	杨峰. 电炉渣回收铜技术改造方案的研究与设计[J]. 有色金属, 2006, (1):14-17. YANG F. The study and design of electric furnace slag project in guixi smelter[J]. Nonferrous Metals, 2006, (1):14-17.
[18]	汤雁冰. 诺兰达炉渣选矿工艺探讨[J]. 有色冶金, 2000, (4):15-20. TANG Y B. Discussion on treatment technology of noranda furnace slag[J]. Non-ferrous Mining and Metallurgy, 2000, (4):15-20.
[19]	金锐, 王景双, 龙秋容. 复杂铜冶炼渣浮选试验研究[J]. 江西有色金属, 2009, (1):12-14. JIN R, WANG J S, LONG Q R. Study on the floatation technology of complicated copper smelting slag[J]. Jiangxi Nonferrous Metals, 2009, (1):12-14.
[20]	WASTFORD R M S. 铜冶炼厂转炉渣在芒特艾萨矿业公司选厂浮选[J]. 有色冶炼, 1985, (9):25. WASTFORD R M S. Mining and metallurgical practice in australasia[J]. Non-ferrous Mining and Metallurgy, 1985, (9):25.
[21]	黄自力, 李倩, 李密, 等. 高温贫化-浮选法从炼铜水淬渣中回收铜[J]. 矿产综合利用, 2009, (2):37-39. HUANG Z L, LI Q, LI M, et al. Recovery of copper from water quenched slag of copper smelting by impoverishment at high temperature and flotation[J]. Multipurpose Utilization of Mineral Resources, 2009, (2):37-39.
[22]	杨慧芬, 袁运波, 张露, 等. 铜渣中铁铜组分回收利用现状及建议[J]. 金属矿山, 2012, (5):165-168. YANG H F, YUAN Y B, ZHANG L, et al. Present situation and proposed method of recycling iron and copper from copper slag[J]. Metal Mine, 2012, (5):165-168.
[23]	杨威. 从某废弃氧化铜渣中回收铜的研究[D]. 长沙:中南大学, 2012. YANG W. Recovery of copper from the wasted copper oxide residues[D]. Changsha:Central South University, 2012.
[24]	李运刚. 炼铜炉渣的综合利用[J]. 环境保护, 2006, (6):46-47. LI Y G. Comprehensive utilization of copper slag[J]. Environmental Protection, 2006, (6):46-47.
[25]	谢素超, 周辉. 基于Kriging法的铁道车辆客室结构优化[J]. 中南大学学报(自然科学版), 2012, 43(5):1990-1998. XIE S C, ZHOU H. Optimization on passenger compartment structure of railway vehicle based on Kriging method[J]. Journal of Central South University (Science and Technology), 2012, 43(5):1990-1998.
[26]	SEETHARAMAN R, RAVISANKAR V, BALASUBRAMANIAN V. Corrosion performance of friction stir welded AA2024 aluminium alloy under salt fog conditions[J]. Transactions of Nonferrous Metals Society of China, 2015, 25(5):1427-1438.
[27]	王梦寒, 王彦丽, 杨海. 基于响应面法的高强度钢板热冲压成形圆角破裂的工艺参数优化[J]. 中南大学学报(自然科学版), 2014, (12):4161-4167. WANG M H, WANG Y L, YANG H. Optimization of fillet cracking process parameters for high strength steel plate hot stamping based on response surface methodology[J]. Journal of Central South University (Science and Technology), 2014, (12):4161-4167.
[28]	张琳, 方建军, 赵敏捷, 等. 因子设计和响应面法优化某胶磷矿浮选试验[J]. 非金属矿, 2017, 40(3):22-25. ZHANG L, FANG J J, ZHAO M J, et al. Collophanite flotation experiment based on factorial design and response surface methodology[J]. Non-Metallic Mines, 2017, 40(3):22-25.
[29]	王万中. 试验的设计与分析[M]. 北京:高等教育出版社, 2004. WANG W Z. Design and Analysis of Experiments[M]. Beijing:Higher Education Press, 2004.
[30]	郝琪, 杨林松, 曹立波. 基于响应面法的车身刚度特性的优化设计[J]. 机械科学与技术, 2010, 29(11):1569-1573. HAO Q, YANG L S, CAO L B. Mechanical science and technology for aerospace engineering[J]. Mechanical Science and Technology for Aerospace Engineering, 2010, 29(11):1569-1573.