TXIB对Mextral973H从铜氨溶液中萃取铜及氨的影响研究
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摘要
以Cu-NH_3-NH_4Cl-H_2O体系为研究对象,TXIB(2,2,4-三甲基-1,3-戊二醇双异丁酸酯)为改质剂,考察TXIB用量、萃取剂浓度、萃取相比、水相铜浓度、氨浓度等对萃取剂Mextral973H从铜氨溶液中萃取铜及氨的影响。结果表明,TXIB的使用可以显著降低氨的共萃而不影响铜的萃取。在萃取相比O/A=1/1、有机相浓度20%、铜浓度18.0g/L、氨浓度84.0g/L的条件下,向有机相中添加10%的TXIB后,铜萃取率由60.44%变化为60.20%,有机相共萃氨量从410.2mg/L降至154.8mg/L。
With TXIB(2,2,4-trimethyl-1,3-pentanediol diisobutyrate)as modifier and Mextral973 H as extractant,effects of TXIB dosage(volume fraction),extractant concentration(volume fraction),O/A ratio,Cu~(2+) and ammonia concentration in feed solution on extraction of copper and ammonia in Cu-NH_3-NH_4 Cl-H_2O system were investigated.The results show that addition of TXIB in organic can reduce extraction of ammonia remarkably,and has little effect on copper extraction.Copper extraction rate is60.44% and ammonia in loaded organic is 410.2 mg/L under the conditions including O/A =1/1,Metral973 Hconcentration of 20%,copper concentration of 18.0 g/L,and ammonia concentration of84.0 g/L in feed solution.Copper extraction rate is 60.20%and ammonia in loaded organic is 154.8 mg/L extracted by 20% Metral973 H with addition of 10% TXIB.
With TXIB(2,2,4-trimethyl-1,3-pentanediol diisobutyrate)as modifier and Mextral973 H as extractant,effects of TXIB dosage(volume fraction),extractant concentration(volume fraction),O/A ratio,Cu~(2+) and ammonia concentration in feed solution on extraction of copper and ammonia in Cu-NH_3-NH_4 Cl-H_2O system were investigated.The results show that addition of TXIB in organic can reduce extraction of ammonia remarkably,and has little effect on copper extraction.Copper extraction rate is60.44% and ammonia in loaded organic is 410.2 mg/L under the conditions including O/A =1/1,Metral973 Hconcentration of 20%,copper concentration of 18.0 g/L,and ammonia concentration of84.0 g/L in feed solution.Copper extraction rate is 60.20%and ammonia in loaded organic is 154.8 mg/L extracted by 20% Metral973 H with addition of 10% TXIB.
引文
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[4]赵洪冬.高碱性脉石低品位氧化铜矿浸出工艺及氨浸动力学研究[D].长沙:中南大学,2014.
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[7]徐国强.含铜蚀刻废液的综合利用研究进展[J].有色冶金设计与研究,2007,28(23):68-71.
[8]郑帅飞.利用含铜蚀刻废液合成碱式碳酸铜新工艺研究[D].南宁:广西大学,2008.
[9]蒋崇文,李雪梅,苏爱鲜.印刷线路板碱性蚀刻废液中铜的萃取回收利用工艺[J].化工进展,2011(30):122-126.
[10]方建军.汤丹难处理氧化铜矿高效利用新技术及产业化研究[D].昆明:昆明理工大学,2008.
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[12]BHASKARA SARMA PVR,NATHSARMA K C.Extraction of nickel from ammoniacal solutions using LIX87QN[J].Hydrometallurgy,1996,42(1):83-91.
[13]孙方玖,邓佐卿,张帆.溶剂萃取原理和在冶金工艺中的应用[M].北京:原子能出版社,1985:110-120.
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