硫代硫酸盐-EDTA-铜离子浸金体系中硫代硫酸盐紫外光谱研究
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摘要
采用紫外光谱对硫代硫酸盐-EDTA-铜离子浸金体系、硫代硫酸盐-氨水-铜离子浸金体系中硫代硫酸盐浓度进行分析和比较。结果表明:在硫代硫酸盐-EDTA-铜离子浸金体系中,无论金是否浸出,硫代硫酸盐浓度呈下降趋势,有金浸出时硫代硫酸盐浓度下降较慢;在硫代硫酸盐-氨水-铜离子浸金体系中,硫代硫酸盐浓度下降较快,其终浓度较硫代硫酸盐-EDTA-铜离子浸金体系中的终浓度要低。
We analyzed and compared the thiosulfate concentration in the thiosulfate-EDTA-copper ion system of gold leaching and thiosulfate-ammonia-copper ion system of gold leaching by UV spectra.The results show that the thiosulfate concentration decreases firstly whether the gold leaches out or not in the thiosulfate-EDTA-copper ion system of gold leaching,and the thiosulfate concentration decreases slowly when gold leaches out.Furthermore,the thiosulfate concentration decreases quickly in the thiosulfate-ammonia-copper ion system of gold leaching,which is ultimately lower than that in the thiosulfate-EDTA-copper ion system of gold leaching.
We analyzed and compared the thiosulfate concentration in the thiosulfate-EDTA-copper ion system of gold leaching and thiosulfate-ammonia-copper ion system of gold leaching by UV spectra.The results show that the thiosulfate concentration decreases firstly whether the gold leaches out or not in the thiosulfate-EDTA-copper ion system of gold leaching,and the thiosulfate concentration decreases slowly when gold leaches out.Furthermore,the thiosulfate concentration decreases quickly in the thiosulfate-ammonia-copper ion system of gold leaching,which is ultimately lower than that in the thiosulfate-EDTA-copper ion system of gold leaching.
引文
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[2] SITANDO O,SENANAYAKE G,DAI X,et al.A review of factors affecting gold leaching in non-ammoniacal thiosulfate solutions including degradation and in-situ,generation of thiosulfate[J].Hydrometallurgy,2018,178:151-178.
[3]韩彬,童雄,谢贤,等.硫代硫酸盐浸金体系研究进展[J].矿产综合利用,2015(3):11-16.HAN B,TONG X,XIE X,et al.Progress of thiosulfate system in gold leaching[J].Multipurpose Utilization of Mineral Resources,2015(3):11-16.
[4]字富庭,何素琼,胡显智,等.硫代硫酸盐浸金中硫代硫酸盐稳定性研究状况[J].矿冶,2012,21(3):33-38.ZI F T,HE S Q,HU X Z,et al.Study development of thiosulfate stability in gold leaching[J].Mining&Metallurgy,2012,21(3):33-38.
[5]项朋志,刘琼,黄遥.硫代硫酸盐浸金体系中铜氨影响研究[J].化学与生物工程,2017,34(12):14-16,42.XIANG P Z,LIU Q,HUANG Y.Effect of copper and ammonia in thiosulfate gold leaching system[J].Chemistry&Bioengineering,2017,34(12):14-16,42.
[6]项朋志,刘琼,黄遥,等.基于硫代硫酸盐铜乙二胺浸金体系铜及乙二胺影响电化学研究[J].现代矿业,2018,34(1):151-154.XIANG P Z,LIU Q,HUANG Y,et al.Electrochemical study on copper and ethylenediamine effect based on gold leaching in copper-ethanediamine-thiosulphate solutons[J].Express Information of Mining Industry,2018,34(1):151-154.
[7] M·G·艾尔莫尔,黎林,李长根.金的硫代硫酸盐浸出法评述[J].国外金属矿选矿,2001(5):2-19.
[8]王飞旺,戴惠新,崔毅琦.置换法从硫代硫酸盐浸液中回收金银的研究进展[J].昆明理工大学学报(自然科学版),2017,42(2):1-7.WANG F W,DAI H X,CUI Y Q.Review on recovery of gold and silver from thiosulfate leaching solution by cementation method[J].Journal of Kunming University of Science and Technology(Natural Science Edition),2017,42(2):1-7.
[9]任华忠,封家福,伍朝君.离子色谱法测定注射用硫代硫酸钠中的亚硫酸盐和硫酸盐[J].华西药学杂志,2015,30(1):103-104.REN H Z,FENG J F,WU C J.Determination of sulfite and sulfate in sodium thiosulfate injection by ion chromatography[J].West China Journal of Pharmaceutical Sciences,2015,30(1):103-104.
[10]姚守仁,于淑坤,罗思泉.水中亚硫酸根、硫离子和硫代硫酸根离子的高速液相色谱分析[J].环境科学,1981(6):47-50.
[11]刘晓健,朱兴年.紫外分光光度法测定硫代硫酸钠溶液的含量[J].中南药学,2009,7(7):559-560.
[12]吉琛.连多硫酸盐亚硫酸化及硫代硫酸化的反应动力学分析[D].徐州:中国矿业大学,2015.JI C.Kinetic analysis of sulfitolysis and thiosulfatolysis for polythionates[D].Xuzhou:China University of Mining and Technology,2015.
[13]陆永超.反应过程中硫氧化合物的检测和动力学分析[D].徐州:中国矿业大学,2010.LU Y C.Determination and kinetic analyses of sulfur-oxygen species in reaction process[D].Xuzhou:China University of Mining and Technology,2010.