Application of phase separation leaching-flame atomic absorption spectrometry to the determination of occurrence state of gold in high-sulfur high-arsenic gold ore and smelting materials
FU Zhao-di, FU Rao,YANG Bing-hong
Changsha Research Institute of Mining and Metallurgy Co., Ltd., Changsha 410012, China
Abstract：The occurrence state of gold in high-sulfur high-arsenic gold ore and smelting materials was complicated. In order to explore the occurrence state of gold in these materials, the monomer gold and associated gold were firstly leached using mixed solution of iodine and potassium iodide. After destroying the arsenopyrite by alkali leaching, the bare arsenopyrite-packaged gold was leached using mixed solution of iodine and potassium iodide. Then, the sulfides were destroyed by acid leaching, and the sulfide- packaged gold was also leached using mixed solution of iodine and potassium iodide. Finally, the gold packaged in oxidized ore was dissolved with aqua regia. The silicon in residue was removed using hydrofluoric acid, and the gold packaged in silicate was determined. Total gold and gold in each phase after treatment were all determined by flame atomic absorption spectrometry. The occurrence state of gold in six representative samples from one high-sulfur high-arsenic gold mine (including two raw ore samples, one concentrate ore sample after flotation, one leaching residue sample, one roasted product sample and one dust sample) was analyzed. The results were consistent with those obtained by traditional potassium cyanide leaching-flame atomic absorption spectrometry and mineral processing experiments. The relative standard deviations (RSD, n=6) were less than 2%.
符招弟,傅 饶, 杨炳红. 分相浸出-火焰原子吸收光谱法测定高硫高砷金矿石及选冶物料中金的赋存状态[J]. 冶金分析, 2015, 35(11): 23-27.
FU Zhao-di, FU Rao,YANG Bing-hong. Application of phase separation leaching-flame atomic absorption spectrometry to the determination of occurrence state of gold in high-sulfur high-arsenic gold ore and smelting materials. , 2015, 35(11): 23-27.
杨平平,田新娟,李波,等. 灼烧法与硝酸-高氯酸法处理火焰原子吸收光谱法测定树脂中金 [J]. 冶金分析,2013, 33(6): 23-26. YANG Ping-ping, TIAN Xin-juan,LI Bo,et al. Determination of gold in resin by flame atomic absorption spectrometry after preparation with combustion or nitric acid-perchoric acid method [J]. Metallurgical Analysis, 2013,33(6):23-26.
[2]
Gregore D C. Method for geo-electrochemical sampling [J] J. Geochem., 1985, 23(2): 257-278.
[3]
唐肖玫,姚敬劬. 化学物相分析方法研究矿石中金的赋存状态 [J]. 岩矿测试,1994,13(1):1-5. TANG Xiao-mei,YAO Jin-ju. Study of chemical phase analysis for occurrence of gold in ores [J]. Rock and Mineral Analysis, 1994,13(1):1-5.
[4]
胡涛,陈蓉美. 伴生金的赋存状态研究的意义及方法 [J]. 黄金,1992,13(2): 1-5. HU Tao, CHEN Rong-mei. The significance and methods of the study on the occurrence of assoclated gold [J]. Gold, 1992,13(2): 1-5.
[5]
Tony E Karam, Louis H Haber. Molecular adsorption and resonance coupling at the colloidal gold nanoparticle interface [J]. J. Phy. Chem., C,2014,118(1): 642-649.
[6]
郑大中,郑若峰. 矿石中金的化学物相分析新方法 [J]. 黄金,1993,14(3): 55-59. ZHENG Da-zhong, ZHENG Ruo-feng. A new method of chemical phase analysis of gold in ores [J]. Gold, 1993, 14(3) : 55-59.
[7]
唐肖玫. 化学物相分析方法研究金的赋存相态 [J]. 岩矿测试,1992,13 (4) : 162-165. TANG Xiao-mei. Study of chemical phase analysis for occurrence of gold [J]. Rock and Mineral Analysis, 1992,13(4):162-165.
[8]
孙戬. 金银冶金 [M]. 北京:冶金工业出版社, 1989:45-67.
[9]
黄振卿. 简明黄金手册 [M]. 长春:东北师大出版社, 1991:27-45.
[10]
王道隆. 矿石和工业产品化学物相分析 [M]. 北京: 冶金工业出版社, 1992:59-72.
[11]
徐长跃,邹海峰,田莉玉. 高砷高硫金矿石中金的相态分析方法 [J]. 世界地质,2003,22(2): 205-207.XU Chang-yue, ZOU Hai-feng, TIAN Li-yu. A phase analysis method of gold in high arsenic and sulfur containing gold ore [J]. Global Geology, 2003, 22(2): 205-207.
