| Extracting gold from pyrite roster cinder by ultra-fine-grinding and resin-in-pulp |
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| 作者姓名： | WEI Jun-ting |
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| 作者单位： | CollegeofChemistryandChemicalEngineeringCentralSouthUniversity，CollegeofChemistryandChemicalEngineeringCentralSouthUniversity，CollegeofMetallurgicalScienceandEngineeringCentralSouthUniversity，CollegeofChemistryandChemicalEngineeringCentralSouthUniversity Changsha410083，China，Changsha410083，China，Changsha410083，China，Changsha410083，China |
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| 摘 要： | 1 ＩＮＴＲＯＤＵＣＴＩＯＮＲｅｓｉｎ ｉｎ ｐｕｌｐｐｒｏｃｅｓｓｉｓａｎａｄｖａｎｃｅｄｔｅｃｈ ｎｉｑｕｅｏｆｅｘｔｒａｃｔｉｎｇ ｇｏｌｄｗｉｔｈｏｕｔｆｉｌｔｅｒ ,ｉｎｗｈｉｃｈｇｏｌｄｉｓｄｉｒｅｃｔｌｙｅｘｔｒａｃｔｅｄｆｒｏｍｃｙａｎｉｄｅｐｕｌｐｗｉｔｈｉｏｎｅｘｃｈａｎｇｅｒｒｅｓｉｎ .Ｉｔａｖｏｉｄｓｌｉｑｕｉｄｓｏｌｉｄｓｅｐａｒａｔｉｏｎ ,ｄｅｃｒｅａｓｅｓｌｏｓｓｏｆｇｏｌｄｉｎｔａｉｌｗａｓｈｉｎｇｓａｎｄｉｎｃｒｅａｓｅｓｔｈｅｒｅｃｏｖｅｒｙｏｆｇｏｌｄ1,2 ] .353Ｅ…
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| 收稿时间： | 18 October 2001 |
Extracting gold from pyrite roster cinder by ultra-fine-grinding and resin-in-pulp |
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| Wei Jun-ting , Yan Gui-you , Guo Bing-kun and Gao Gui-lan.Extracting gold from pyrite roster cinder by ultra-fine-grinding and resin-in-pulp[J].Journal of Central South University of Technology,2003,10(1):27-31. |
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| Authors: | Wei Jun-ting Yan Gui-you Guo Bing-kun and Gao Gui-lan |
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| Affiliation: | (1) College of Chemistry and Chemical Engineering, Central South University, 410083 Changsha, China;(2) College of Metallurgical Science and Engineering, Central South University, 410083 Changsha, China |
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| Abstract: | The ultra-fine-grinding and resin-in-pulp with pH value of 10 are used to extract gold from pyrite roster cinder. During leaching
process, aluminium oxide ball is used as stirring medium, hydrogen peroxide as leaching agent and sodium hexametaphosphate
as grinding agent. With AM-2σ resin as absorber and sulfocarbamide as eluent, gold is recovered from cyanide pulp of pyrite
roster cinder by resin-in-pulp. The effects of contact time, temperature and acidity etc. on the gold absorption are investigated
by static methods and dynamic method respectively. The effects of flow rate of solution on dynamic adsorption and elution
of gold are studied. The results show that AM-2σ resin has good adsorbability in cyanide solution, and gold can be easily
eluated from the loaded resin with 0.1mol/L hydrochloric acid and 1mol/L sulfocabamide. The adsorption rate and the elution
of gold exceed 98%. When leaching time is 2 h, mass ratio of liquid to solid 4:1, consumption of sodium cyanide 3 kg/t, concentration
of hydrogen peroxide and sodium hexametaphosphate 0.05% respectively, adsorption time 30 min, temperature 10–30 °C, volume
of resin 3 mL, ratio of eluent to resin (10–20):1, velocity of eluent 1.5 mL/min, the leaching rate of gold reaches 85%. Compared
with traditional leaching technology, it can reduce leaching time, avoid complex filter process, decrease sodium cyanide consumption
and increase leaching rate of gold by 35%.
Biography of the first author: WEI Jun-ting, born in 1972, majoring in analytical chemistry. |
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| Keywords: | ultra fine grinding resin in pulp cyanide leaching gold |
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