难选氧化锌矿硫化焙烧-浮选试验
|
摘要
针对氧化锌矿浮选分离困难、选矿指标低的问题,提出氧化锌矿硫化焙烧-浮选技术方案。以硫磺为硫化剂,通过硫化焙烧,将氧化锌矿物转化为硫化锌矿物,再使用传统的硫化矿浮选法分选。试验原矿含锌5.13%,氧化率达86.55%,主要脉石矿物为石英和方解石。通过焙烧试验,确定最佳焙烧条件为硫磺添加量3%,焙烧温度650℃,焙烧时间60 min,磨矿细度-74μm占85%;然后通过闭路浮选试验,获得锌品位38.96%、锌回收率86.33%的锌精矿。
A sulfurization roasting-flotation method has been proposed and investigated in this paper to solve problems of difficult separation and low ore dressing indexes of the normal flotation for processing zinc oxide ore. In this method, the zinc oxide was roasted by the vulcanizing agent of sulfur and converted to zinc sulfide which was then to have been treated by the conventional flotation method for recovering zinc concentrate. The ore sample used in this investigation contains 5.13% Zn at an oxide rateof 86.55%, with main gangue minerals of quartz and calcite. Based on a series of experiments, the optimum condition for the roasting process has been established with the sulfur addition rate of 3%, roasting temperature of 650℃, roasting time of 60 minutes, and grinding finesse of less than 74 μm, respectively, as 86.33% of the roasted product can be recovered by the closed-circuit flotation method with the zinc concentrate containing s 38.96% Zn.
A sulfurization roasting-flotation method has been proposed and investigated in this paper to solve problems of difficult separation and low ore dressing indexes of the normal flotation for processing zinc oxide ore. In this method, the zinc oxide was roasted by the vulcanizing agent of sulfur and converted to zinc sulfide which was then to have been treated by the conventional flotation method for recovering zinc concentrate. The ore sample used in this investigation contains 5.13% Zn at an oxide rateof 86.55%, with main gangue minerals of quartz and calcite. Based on a series of experiments, the optimum condition for the roasting process has been established with the sulfur addition rate of 3%, roasting temperature of 650℃, roasting time of 60 minutes, and grinding finesse of less than 74 μm, respectively, as 86.33% of the roasted product can be recovered by the closed-circuit flotation method with the zinc concentrate containing s 38.96% Zn.
引文
[1]邵鸿媚, 申晓毅, 朱慧婷, 等. 低品位氧化锌矿硫酸铵的焙烧过程及其反应机理[J]. 中国有色金属学报, 2017, (01): 138-144.
[2]张鹏飞, 谢海云, 丁超, 等. 低品位氧化锌矿硫化-胺法分选试验[J]. 矿物学报, 2017, (04): 456-460.
[3]李学清. 兰坪难选氧化铅锌矿选矿试验研究[J]. 有色金属(选矿部分), 2003, (1): 1-2,13.
[4]宋龑, 刘全军, 常富强. 氧化锌矿的浮选现状与研究进展[J]. 矿冶, 2012, 21(2): 19-22.
[5]陆智, 蔡振波, 刘子帅. 氧化铅锌矿浮选工艺研究进展[J]. 有色金属工程, 2014, (4): 77-80.
[6]杜五星, 戴惠新, 何东祥, 等. 氧化铅锌矿的选矿研究现状及进展[J]. 矿产综合利用, 2016, (04): 11-15.
[7]谭欣, 何发钰, 吴卫国, 等. 某砂岩型低品位氧化铅锌矿选矿工艺[J]. 有色金属, 2010, 62(3): 115-122.
[8]杨俊龙, 刘全军, 郭艳华, 等. 高氧化率难选氧化锌矿的浮选试验研究[J]. 矿物学报, 2014, (01): 67-71.
[9]Hosseini S H, Forssberg E. Adsorption studies of smithsonite flotation using dodecylamine and oleic acid[J]. Minerals & Metallurgical Processing, 2006, 23(2): 87-96.
[10]韩文静. 絮凝浮选氧化铅锌矿的理论与实践[J]. 中国矿山工程, 2011, (01): 22-24.
[11]吴卫国, 孙传尧, 朱永揩. 五种有机螯合剂活化菱锌矿作用机理研究[J]. 矿冶, 2007, (01): 16-21.
[12]ZHENG Y-X, LIU W, QIN W-Q, et al. Mineralogical Reconstruction of Lead Smelter Slag for Zinc Recovery[J]. Separation Science & Technology, 2014, 49(5): 783-791.
[13]ZHENG Y X, LIU W, QIN W Q, et al. Improvement for sulphidation roasting and its application to treat lead smelter slag and zinc recovery[J]. Canadian Metallurgical Quarterly, 2014, 54(1): 92-100.
[14]CHAI L-Y, LIANG Y-J, KE Y, et al. Mechano-chemical sulfidization of zinc oxide by grinding with sulfur and reductive additives[J]. Transactions of Nonferrous Metals Society of China, 2013, 23(4): 1129-1138.
[15]李勇. 低品位氧化铅锌矿硫化—浮选工艺及理论研究[D].昆明:昆明理工大学,2009.
[16]Kashani A H N, Rashchi F. Separation of oxidized zinc minerals from tailings: Influence of flotation reagents[J]. Minerals Engineering, 2008, 21(12-14): 967-972.
[17]LIANG Y-J, CHAI L-Y, MIN X-B, et al. Hydrothermal sulfidation and floatation treatment of heavy-metal-containing sludge for recovery and stabilization[J]. Journal of hazardous materials, 2012, 217: 307-314.
[18]KE Y, CHAI L-Y, LIANG Y-J, et al. Sulfidation of heavy-metal-containing metallurgical residue in wet-milling processing[J]. Minerals Engineering, 2013, 53(Supplement C): 136-143.
[19]ZHENG Y-X, LIU W, QIN W-Q, et al. Sulfidation roasting of lead and zinc carbonate with sulphur by temperature gradient method[J]. Journal of Central South University, 2015, 22(5): 1635-1642.
[2]张鹏飞, 谢海云, 丁超, 等. 低品位氧化锌矿硫化-胺法分选试验[J]. 矿物学报, 2017, (04): 456-460.
[3]李学清. 兰坪难选氧化铅锌矿选矿试验研究[J]. 有色金属(选矿部分), 2003, (1): 1-2,13.
[4]宋龑, 刘全军, 常富强. 氧化锌矿的浮选现状与研究进展[J]. 矿冶, 2012, 21(2): 19-22.
[5]陆智, 蔡振波, 刘子帅. 氧化铅锌矿浮选工艺研究进展[J]. 有色金属工程, 2014, (4): 77-80.
[6]杜五星, 戴惠新, 何东祥, 等. 氧化铅锌矿的选矿研究现状及进展[J]. 矿产综合利用, 2016, (04): 11-15.
[7]谭欣, 何发钰, 吴卫国, 等. 某砂岩型低品位氧化铅锌矿选矿工艺[J]. 有色金属, 2010, 62(3): 115-122.
[8]杨俊龙, 刘全军, 郭艳华, 等. 高氧化率难选氧化锌矿的浮选试验研究[J]. 矿物学报, 2014, (01): 67-71.
[9]Hosseini S H, Forssberg E. Adsorption studies of smithsonite flotation using dodecylamine and oleic acid[J]. Minerals & Metallurgical Processing, 2006, 23(2): 87-96.
[10]韩文静. 絮凝浮选氧化铅锌矿的理论与实践[J]. 中国矿山工程, 2011, (01): 22-24.
[11]吴卫国, 孙传尧, 朱永揩. 五种有机螯合剂活化菱锌矿作用机理研究[J]. 矿冶, 2007, (01): 16-21.
[12]ZHENG Y-X, LIU W, QIN W-Q, et al. Mineralogical Reconstruction of Lead Smelter Slag for Zinc Recovery[J]. Separation Science & Technology, 2014, 49(5): 783-791.
[13]ZHENG Y X, LIU W, QIN W Q, et al. Improvement for sulphidation roasting and its application to treat lead smelter slag and zinc recovery[J]. Canadian Metallurgical Quarterly, 2014, 54(1): 92-100.
[14]CHAI L-Y, LIANG Y-J, KE Y, et al. Mechano-chemical sulfidization of zinc oxide by grinding with sulfur and reductive additives[J]. Transactions of Nonferrous Metals Society of China, 2013, 23(4): 1129-1138.
[15]李勇. 低品位氧化铅锌矿硫化—浮选工艺及理论研究[D].昆明:昆明理工大学,2009.
[16]Kashani A H N, Rashchi F. Separation of oxidized zinc minerals from tailings: Influence of flotation reagents[J]. Minerals Engineering, 2008, 21(12-14): 967-972.
[17]LIANG Y-J, CHAI L-Y, MIN X-B, et al. Hydrothermal sulfidation and floatation treatment of heavy-metal-containing sludge for recovery and stabilization[J]. Journal of hazardous materials, 2012, 217: 307-314.
[18]KE Y, CHAI L-Y, LIANG Y-J, et al. Sulfidation of heavy-metal-containing metallurgical residue in wet-milling processing[J]. Minerals Engineering, 2013, 53(Supplement C): 136-143.
[19]ZHENG Y-X, LIU W, QIN W-Q, et al. Sulfidation roasting of lead and zinc carbonate with sulphur by temperature gradient method[J]. Journal of Central South University, 2015, 22(5): 1635-1642.