含铜金精矿焙烧——酸浸对金、银浸出率的影响
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摘要
某黄金冶炼厂采用焙烧—酸浸—氰化浸出工艺处理含铜金精矿。针对金、银浸出率偏低的情况,进行了工艺条件优化。通过单因素对比试验,考察焙烧温度、焙烧时间、酸浸酸度、酸浸时间和矿物粒度对金、银浸出率的影响。结果表明:在焙烧温度为650℃,焙烧时间为1 h,酸浸酸度为25 g/L,酸浸时间为1 h,-0.074 mm含量占90%的条件下,进行氰化浸出,金、银浸出率分别达到97.13%和67.56%,分别提高了6.87%和14.80%,取得了良好的工艺指标。
Roasting-acid leaching-cyanide leaching process was used to treat a gold concentrate containing copper.According to the low leaching rate of gold and silver,the technological conditions were optimized.The effects of roasting temperature,roasting time,acid leaching acidity,acid leaching time and mineral particle size on leaching rate of gold and silver were investigated by single factor comparative test.The results showed that under the conditions of roasting temperature of 650 ℃,roasting time was 1 h,acid dipping acidity was 25 g/L,acid leaching time was 1 h and -0.074 mm content was 90%,the leaching rate of gold and silver reached 97.13% and 67.56%respectively,the leaching rate of gold and silver increased by 6.87% and 14.80% respectively,better technological indexes had been obtained.
Roasting-acid leaching-cyanide leaching process was used to treat a gold concentrate containing copper.According to the low leaching rate of gold and silver,the technological conditions were optimized.The effects of roasting temperature,roasting time,acid leaching acidity,acid leaching time and mineral particle size on leaching rate of gold and silver were investigated by single factor comparative test.The results showed that under the conditions of roasting temperature of 650 ℃,roasting time was 1 h,acid dipping acidity was 25 g/L,acid leaching time was 1 h and -0.074 mm content was 90%,the leaching rate of gold and silver reached 97.13% and 67.56%respectively,the leaching rate of gold and silver increased by 6.87% and 14.80% respectively,better technological indexes had been obtained.
引文
[1]Xie Jianhong.Gold Mineral Processing and Metallurgy[M].Beijing:Metallurgical Industry Press,2014:1-10.[谢建宏.黄金选冶[M].北京:冶金工业出版社,2014:1-10.]
[2]Jiang Tao.Chemistry in Gold Extraction[M].Changsha:Hunan Science and Technology Press,1998:1-12.[姜涛.提金化学[M].长沙:湖南科学技术出版社,1998:1-12.]
[3]Guo Chihao,Yuan Chaoxin,Sun Cong.Process study on extracting gold and copper from gold concentrates containing highgrade copper[J].Nonferrous Metals(Extractive Metallurgy),2010(6):37-40.[郭持皓,袁朝新,孙聪.高铜金精矿提取金铜工艺研究[J].有色金属(冶炼部分),2010(6):37-40.]
[4]Zhou Shijie,Wang Chenggong,Zhang Shumin,et al.Test research of gold extraction by cyanidation-leaching from a copper-containing gold concentrate[J].Metal Mine,2004(2):38-40.[周世杰,王成功,张淑敏,等.某含铜金精矿氰化浸出提金试验研究[J].金属矿山,2004(2):38-40.]
[5]Xue Guang,Yu Yongjiang.Experimental study on the process of adoption roasting cyanidation extraction of gold,silver and copper in the copper concentrate[J].Gold Science and Technology,2014,21(2):86-89.[薛光,于永江.焙烧—氰化法从铜精矿中提取金银铜的试验研究[J].黄金科学技术,2014,21(2):86-89.]
[6]Liao Dehua.Study on Pre-treatment of Technology of Refractory Copper-bearing Gold Ores Under Oxygen Chemical[D].Ganzhou:Jiangxi University of Science and Technology,2008.[廖德华.难处理含铜金矿化学氧化预处理浸出技术研究[D].赣州:江西理工大学,2008.]
[7]Zhong Shuiping.Roasting-acid leaching-cyanidation of refractory gold concentrate containing copper[J].Gold Science and Technology,2013,21(2):82-85.[衷水平.含铜难处理金精矿焙烧—酸浸—氰化提金工艺研究[J].黄金科学技术,2013,21(2):82-85.]
[8]Sun Cong,Yuan Zhaoxin.Roasting pretreatment of extracting gold and copper from refractory gold concentrate[J].Nonferrous Metals Engineering,2012,2(3):36-38.[孙聪,袁朝新.某难处理金精矿焙烧预处理提取金和铜[J].有色金属工程,2012,2(3):36-38.]
[9]Wang Shuai,Li Chao,Li Hongxu.Research progress of pretreatment technologies of refractory gold ores[J].Gold Science and Technology,2014,22(4):129-134.[王帅,李超,李宏煦.难浸金矿预处理技术及其研究进展[J].黄金科学技术,2014,22(4):129-134.]
[10]Zeng Guanwu.Iron Removal and Gold Leaching Technology from the Calcine of High Iron,Sulfur and Arsenic Gold Concertrate[D].Changsha:Central South University,2014.[曾冠武.高铁高硫砷金精矿焙砂除铁提金技术研究[D].长沙:中南大学,2014.]
[11]Wang Lijun,Luo Yuanhui,Gao Hongshan,et al.Research on encapsulation of roasted refractory gold concentrate[J].Chinese Journal of Rare Metals,2005,29(4):424-428.[王力军,罗远辉,高洪山,等.难处理金矿二次包裹现象研究[J].稀有金属,2005,29(4):424-428.]
[12]Huang Lihuang.Chemical Processing[M].2th ed.Beijing:Metallurgical Industry Press,2012:6-9.[黄礼煌.化学选矿[M].2版.北京:冶金工业出版社,2012:6-9.]
[13]Wang Ruixiang,Zeng Bin,Yu Pan,et al.Roasting pretreatment of poly-metallic and complex gold concentrate to extract gold,silver and copper[J].Chinese Journal of Rare Metals,2014,38(1):86-92.[王瑞祥,曾斌,余攀,等.含多金属复杂金精矿焙烧预处理—提取金、银、铜研究[J].稀有金属,2014,38(1):86-92.]
[14]Wu Zaijiu.Recovery of gold,silver and copper from complex gold concentrate by roasting-acidic leaching-cyanidation process[J].Nonferrous Metals Science and Engineering,2013,4(2):25-29.[吴在玖.焙烧—酸浸—氰化法从复杂金精矿中回收金银铜[J].有色金属科学与工程,2013,4(2):25-29.]
[2]Jiang Tao.Chemistry in Gold Extraction[M].Changsha:Hunan Science and Technology Press,1998:1-12.[姜涛.提金化学[M].长沙:湖南科学技术出版社,1998:1-12.]
[3]Guo Chihao,Yuan Chaoxin,Sun Cong.Process study on extracting gold and copper from gold concentrates containing highgrade copper[J].Nonferrous Metals(Extractive Metallurgy),2010(6):37-40.[郭持皓,袁朝新,孙聪.高铜金精矿提取金铜工艺研究[J].有色金属(冶炼部分),2010(6):37-40.]
[4]Zhou Shijie,Wang Chenggong,Zhang Shumin,et al.Test research of gold extraction by cyanidation-leaching from a copper-containing gold concentrate[J].Metal Mine,2004(2):38-40.[周世杰,王成功,张淑敏,等.某含铜金精矿氰化浸出提金试验研究[J].金属矿山,2004(2):38-40.]
[5]Xue Guang,Yu Yongjiang.Experimental study on the process of adoption roasting cyanidation extraction of gold,silver and copper in the copper concentrate[J].Gold Science and Technology,2014,21(2):86-89.[薛光,于永江.焙烧—氰化法从铜精矿中提取金银铜的试验研究[J].黄金科学技术,2014,21(2):86-89.]
[6]Liao Dehua.Study on Pre-treatment of Technology of Refractory Copper-bearing Gold Ores Under Oxygen Chemical[D].Ganzhou:Jiangxi University of Science and Technology,2008.[廖德华.难处理含铜金矿化学氧化预处理浸出技术研究[D].赣州:江西理工大学,2008.]
[7]Zhong Shuiping.Roasting-acid leaching-cyanidation of refractory gold concentrate containing copper[J].Gold Science and Technology,2013,21(2):82-85.[衷水平.含铜难处理金精矿焙烧—酸浸—氰化提金工艺研究[J].黄金科学技术,2013,21(2):82-85.]
[8]Sun Cong,Yuan Zhaoxin.Roasting pretreatment of extracting gold and copper from refractory gold concentrate[J].Nonferrous Metals Engineering,2012,2(3):36-38.[孙聪,袁朝新.某难处理金精矿焙烧预处理提取金和铜[J].有色金属工程,2012,2(3):36-38.]
[9]Wang Shuai,Li Chao,Li Hongxu.Research progress of pretreatment technologies of refractory gold ores[J].Gold Science and Technology,2014,22(4):129-134.[王帅,李超,李宏煦.难浸金矿预处理技术及其研究进展[J].黄金科学技术,2014,22(4):129-134.]
[10]Zeng Guanwu.Iron Removal and Gold Leaching Technology from the Calcine of High Iron,Sulfur and Arsenic Gold Concertrate[D].Changsha:Central South University,2014.[曾冠武.高铁高硫砷金精矿焙砂除铁提金技术研究[D].长沙:中南大学,2014.]
[11]Wang Lijun,Luo Yuanhui,Gao Hongshan,et al.Research on encapsulation of roasted refractory gold concentrate[J].Chinese Journal of Rare Metals,2005,29(4):424-428.[王力军,罗远辉,高洪山,等.难处理金矿二次包裹现象研究[J].稀有金属,2005,29(4):424-428.]
[12]Huang Lihuang.Chemical Processing[M].2th ed.Beijing:Metallurgical Industry Press,2012:6-9.[黄礼煌.化学选矿[M].2版.北京:冶金工业出版社,2012:6-9.]
[13]Wang Ruixiang,Zeng Bin,Yu Pan,et al.Roasting pretreatment of poly-metallic and complex gold concentrate to extract gold,silver and copper[J].Chinese Journal of Rare Metals,2014,38(1):86-92.[王瑞祥,曾斌,余攀,等.含多金属复杂金精矿焙烧预处理—提取金、银、铜研究[J].稀有金属,2014,38(1):86-92.]
[14]Wu Zaijiu.Recovery of gold,silver and copper from complex gold concentrate by roasting-acidic leaching-cyanidation process[J].Nonferrous Metals Science and Engineering,2013,4(2):25-29.[吴在玖.焙烧—酸浸—氰化法从复杂金精矿中回收金银铜[J].有色金属科学与工程,2013,4(2):25-29.]