云南某铅锌矿浮选工艺优化研究
|
摘要
云南某铅锌矿,原矿含铅1.46%、铅的氧化率为51.28%,含锌4.38%、锌的氧化率为11.75%。由于原矿性质变化,出现了铅精矿品位不高,仅38.38%,铅精矿含锌6.84%,含锌较高的问题,所以要对原有的工艺流程进行优化研究。
探索性试验表明,原矿中方铅矿的可浮性较好,铅回收率低,有20%左右的易浮闪锌矿,这部分闪锌矿可能会使铅锌分离困难,铅精矿品位不高,铅精矿含锌高。
由于通常情况下,混合浮选具有节省浮选机、回水利用方便、节省浮选药剂等优点,因此首先进行了混合浮选工艺研究。试验发现,混合精矿铅锌分离效果不好,铅锌互含严重。针对混合精矿不经脱药处理,不能有效进行铅锌分离的问题,进行了混合精矿脱药再磨铅锌分离、硫化钠脱药活性炭吸附铅锌分离试验,所做试验效果均不理想。通过常规的脱药方法,铅锌分离仍不理想。
为了得到合格的铅精矿和锌精矿,进行了优先浮选工艺优化研究。优先浮选试验发现,铅精矿品位及回收率低、铅精矿含锌高。在分析了可能原因的基础上进行了抑制剂对比、抑制剂加药地点对比、提高铅精矿品位、阶段磨矿阶段选别等工艺优化研究,铅精矿的指标有所改善,但是存在的问题并未根本解决。提高铅回收率的试验研究中,通过在浮选前加入适量的硫化钠,使易浮的氧化铅随硫化铅一起浮出,以提高铅的回收率。硫化钠加在磨机中,不仅铅品位与回收率明显提高,而且铅精矿含锌量也有下降的趋势。进一步试验表明,随着硫化钠用量的增加,铅的回收率变化不大,但是铅品位提高了2个百分点以上,而且含锌量有了大幅度的降低。
推荐流程为优先浮选工艺,采取的优化措施是向磨机中添加碳酸钠、硫化钠各2000克/吨,以及在铅精选过程中添加闪锌矿的抑制。闭路试验获得了品位41.56%、回收率45.80%、含锌3.86%的铅精矿和品位55.65%、回收率83.73%、含铅1.47%的锌精矿。铅精矿的指标不够理想,锌精矿的指标较好。与原工艺流程相比,铅精矿品位提高了3个百分点以上,铅精矿含锌降低了近3个百分点,缓解了铅精矿含锌偏高的问题,但是铅精矿的品位、铅的回收率仍然不高,有待于进一步的研究。
The lead-zinc ore locates in a certain place of Yunnan province, of which the crude ore includes 1.46% of lead,51.28% oxidation rate of the zinc,4.38% of zinc, and 11.75% oxidation rate of zinc. Because of the problems of the low grde of lead concentrate,only 38.38% , and the high grade of zinc,6.84% hapenning due to the characteristic of the crude ore changed, so it is necessary to improve the old process flowsheet.
The exploring tests prove that the galena of the crude ore is floatable comparatively, the recovery of lead is low, and the low grade concentrate of lead includes quite a little zinc since the difficulty of separating lead and zinc due to about 20% easy floatable sphalerite in crude ore.
Firstly, the study of collective flotation is carried out because of many advantages for using collective flotation, such as reducing the numbers of floatation machine, convenience of recycling water and saving reagent and so on. By the tests, it is found that the results of separating lead and zinc is not very satisfactory, and lead-zinc includes each other seriously. For the problems of Inefficient lead-zinc separating without dereagent,the lead-zinc separating tests by regrinding the collective concentrate, and by reagent removal with Na2S, adsorption with carbon.But the results are not good. The separation of lead and zinc is still difficult by using conventional way of reagent removal.
For reaching regular concentration of lead and zinc, we had a preferential flotation test for optimization of process.Through the experiment on selective flotation, we found that the grade and recovery of lead concentrate is low, and the grade of zinc is high in lead concentrate. On the base of analyzing the possibility, the experiments on technology optimum that is the comparisons of inhibitors and its locations, raising the quality of the lead concentrate, and stage grinding and stage separation are carried out. Tough the index of lead concentrate is enhanced, the radical solution is still unsolved. In the experimental study of raising the recovery of lead, optimum Na2s is added before the flotation, and easily floatated plumbous oxide and plumbous sulfide is flotated together. When sodium sulfide is fed in the milling pit, not only the grade and recovery of lead is graduated up remarkably, but also the zinc contents of lead concentrate is lower. Further investigate shows that recovery of lead varies a little, while grade of that raises more than 2% and zinc contents are lower markedly along with increase of sodium sulfide.
The flow recommended is selective flotation,It is reached that the lead grade of 41.56%,recovery of 45.80%,and contents 3.86% of zinc in lead concentrate,and that of zinc concentrate is the zinc grade of 55.65%,recovery of 83.73%,and contents 1.74% of lead by the test of closed ciruit. The former is not sastisfactory enough, but the latter is better.by means of which the grade of lead is raised above 3% and that of zinc reduced about 3% respectively compared with the old one, and the solution of high grade of zinc in lead concentrate is improved. But more research is still need to be carried out because the grade and recovery of lead concentrate are low.
探索性试验表明,原矿中方铅矿的可浮性较好,铅回收率低,有20%左右的易浮闪锌矿,这部分闪锌矿可能会使铅锌分离困难,铅精矿品位不高,铅精矿含锌高。
由于通常情况下,混合浮选具有节省浮选机、回水利用方便、节省浮选药剂等优点,因此首先进行了混合浮选工艺研究。试验发现,混合精矿铅锌分离效果不好,铅锌互含严重。针对混合精矿不经脱药处理,不能有效进行铅锌分离的问题,进行了混合精矿脱药再磨铅锌分离、硫化钠脱药活性炭吸附铅锌分离试验,所做试验效果均不理想。通过常规的脱药方法,铅锌分离仍不理想。
为了得到合格的铅精矿和锌精矿,进行了优先浮选工艺优化研究。优先浮选试验发现,铅精矿品位及回收率低、铅精矿含锌高。在分析了可能原因的基础上进行了抑制剂对比、抑制剂加药地点对比、提高铅精矿品位、阶段磨矿阶段选别等工艺优化研究,铅精矿的指标有所改善,但是存在的问题并未根本解决。提高铅回收率的试验研究中,通过在浮选前加入适量的硫化钠,使易浮的氧化铅随硫化铅一起浮出,以提高铅的回收率。硫化钠加在磨机中,不仅铅品位与回收率明显提高,而且铅精矿含锌量也有下降的趋势。进一步试验表明,随着硫化钠用量的增加,铅的回收率变化不大,但是铅品位提高了2个百分点以上,而且含锌量有了大幅度的降低。
推荐流程为优先浮选工艺,采取的优化措施是向磨机中添加碳酸钠、硫化钠各2000克/吨,以及在铅精选过程中添加闪锌矿的抑制。闭路试验获得了品位41.56%、回收率45.80%、含锌3.86%的铅精矿和品位55.65%、回收率83.73%、含铅1.47%的锌精矿。铅精矿的指标不够理想,锌精矿的指标较好。与原工艺流程相比,铅精矿品位提高了3个百分点以上,铅精矿含锌降低了近3个百分点,缓解了铅精矿含锌偏高的问题,但是铅精矿的品位、铅的回收率仍然不高,有待于进一步的研究。
The lead-zinc ore locates in a certain place of Yunnan province, of which the crude ore includes 1.46% of lead,51.28% oxidation rate of the zinc,4.38% of zinc, and 11.75% oxidation rate of zinc. Because of the problems of the low grde of lead concentrate,only 38.38% , and the high grade of zinc,6.84% hapenning due to the characteristic of the crude ore changed, so it is necessary to improve the old process flowsheet.
The exploring tests prove that the galena of the crude ore is floatable comparatively, the recovery of lead is low, and the low grade concentrate of lead includes quite a little zinc since the difficulty of separating lead and zinc due to about 20% easy floatable sphalerite in crude ore.
Firstly, the study of collective flotation is carried out because of many advantages for using collective flotation, such as reducing the numbers of floatation machine, convenience of recycling water and saving reagent and so on. By the tests, it is found that the results of separating lead and zinc is not very satisfactory, and lead-zinc includes each other seriously. For the problems of Inefficient lead-zinc separating without dereagent,the lead-zinc separating tests by regrinding the collective concentrate, and by reagent removal with Na2S, adsorption with carbon.But the results are not good. The separation of lead and zinc is still difficult by using conventional way of reagent removal.
For reaching regular concentration of lead and zinc, we had a preferential flotation test for optimization of process.Through the experiment on selective flotation, we found that the grade and recovery of lead concentrate is low, and the grade of zinc is high in lead concentrate. On the base of analyzing the possibility, the experiments on technology optimum that is the comparisons of inhibitors and its locations, raising the quality of the lead concentrate, and stage grinding and stage separation are carried out. Tough the index of lead concentrate is enhanced, the radical solution is still unsolved. In the experimental study of raising the recovery of lead, optimum Na2s is added before the flotation, and easily floatated plumbous oxide and plumbous sulfide is flotated together. When sodium sulfide is fed in the milling pit, not only the grade and recovery of lead is graduated up remarkably, but also the zinc contents of lead concentrate is lower. Further investigate shows that recovery of lead varies a little, while grade of that raises more than 2% and zinc contents are lower markedly along with increase of sodium sulfide.
The flow recommended is selective flotation,It is reached that the lead grade of 41.56%,recovery of 45.80%,and contents 3.86% of zinc in lead concentrate,and that of zinc concentrate is the zinc grade of 55.65%,recovery of 83.73%,and contents 1.74% of lead by the test of closed ciruit. The former is not sastisfactory enough, but the latter is better.by means of which the grade of lead is raised above 3% and that of zinc reduced about 3% respectively compared with the old one, and the solution of high grade of zinc in lead concentrate is improved. But more research is still need to be carried out because the grade and recovery of lead concentrate are low.
引文
[1]邓听.铅锌市场分析和展望：[硕士学位论文].北京：北京邮电大学,2008.
[2]胡德勇,牛建英.全面提升我国铅锌矿产资源利用水平.中国矿业,2006,06：8-9.
[3]王福良,邵广全,刘万峰等.第十届选矿年评-铅锌矿石选矿.孙传尧,2006,12.
[4]缪建成,王方汉,刘如意等.南京铅锌银矿电位调控浮选的研究与应用.有色金属(选矿部分),2000,01：5-8.
[5]罗仙平,王淀佐,孙体昌.会理难选铅锌矿石电位调控抑锌浮铅优先浮选新工艺.有色金属,2006,08：94-98.
[6]赵明福,唐宝勤,徐祥彬等.吉林省某铅锌矿石选矿工艺试验研究及应用.黄金,2007,12：39-43.
[7]叶贤东.提高会理锌矿铅锌回收率的试验研究：[硕士学位论文].昆明,昆明理工大学,2000.
[8]刘万峰.河北某难选铅矿石选矿试验研究.有色金属(选矿部分),2009,03：10-13.
[9]王仁东,李振典,杨小峰.云南某氧化铅矿的浮选试验研究.矿产保护与利用,2009,04：30-32.
[10]李兵容.某半氧化铅矿石选矿工艺试验研究.有色金属(选矿部分),2008,01：16-18.
[11]邱廷省,周源,罗仙平.复杂难选高氧化率铅锌硫化矿石浮选工艺研究.有色金属(选矿部分),2003,02：37-40.
[12]夏青,尹艳芬,李晓波等.西部某氧化铅锌矿选矿试验研究.金属矿山,2009,06；83-86.
[13]胡熙庚.有色金属硫化矿选矿.北京：冶金工业出版社,1987.
[14]刘守信.云南某地铅锌多金属硫化矿选矿试验研究：[硕士学位论文].昆明,昆明理工大学,2007.
[15]陈喜峰,彭润民.中国铅锌矿资源形势及可持续发展对策.有色金属,2008,08：129-131.
[16]熊文良,童雄.云南铅锌选矿存在的问题与对策.国外金属矿选矿,2003,08：9.
[17]黄仲权.发挥资源优势强化云南铅锌业基础.地质找矿论丛,2001,‘03：47-49.
[18]雷力,周兴龙,文书明.我国铅锌矿资源特点及开发利用现状.矿业快报,2007,09：1-4.
[19]薛亚洲,王海军.我国铅锌矿资源综合利用现状.中国矿业,2005,08：41-42.
[20]胡熙庚,黄和慰,毛钜凡.浮选理论与工艺.长沙：中南工业大学出版社,1991.
[21]许时.矿石可选性研究.第二版.北京：冶金工业出版社,1989.
[22]叶贤东.提高会理锌矿铅锌回收率的试验研究：[硕士学位论文].昆明：昆明理工大学,2000.
[23]王熙.车河选矿厂铅锑浮选新药剂及工艺技术研究：[硕士学位论文].长沙：中南大学,2004.
[24]陈波.大厂铅锌分离浮选氰化钠抑制机理研究及新药剂的开发：[硕士学位论文].南宁：广西大学,2005.
[25]黎维中.难处理铅锌银硫化矿物资源综合回收的研究与实践：[博士学位论文].长沙：中南大学,2007.
[26]王强.强化铅锌矿中伴生银回收的试验研究：[硕士学位论文].沈阳：东北大学,2004.
[27]伍敬峰.凡口铅锌矿矿泥浮选新工艺研究：[硕士学位论文].长沙：中南大学,2002.
[28]钟素娇.磨矿对方铅矿和闪锌矿浮选行为的影响研究：[硕士学位论文].长沙：中南大学,2006.
[29]王淀佐.浮选剂作用原理及应用.第一版.北京：冶金工业出版社,1982.
[30]张尊.高碳脆硫锑铅锌矿浮选新工艺研究：[硕士学位论文].南宁：广西大学,2007.
[31]韩聪.氧化铅锌矿石浮选试验的研究：[硕士学位论文].沈阳：东北大学,2007.
[32]许春富.澜沧难选富银铅锌矿选矿试验研究：[硕士学位论文].昆明：昆明理工大学,2006.
[33]谢雪飞.凡口铅锌矿银矿物资源综合回收的研究与实践：[硕士学位论文].长沙：中南大学,2004.
[34]戴晶平.凡口铅锌矿硫化矿物的浮选电化学与电位调控浮选研究：[硕士学位论文].长沙：中南大学,2002.
[35]林美群,魏宗武,陈建华等.新型抑制剂DZ在铅锌分离中的试验研究.矿产保护与利用,2008,02：30-32.
[36]魏明安,孙传尧.硫化铜、铅矿物浮选分离研究现状及发展趋势.矿冶,2008,06：6-15.
[37]J.Rubio, J.A.Solari.Lamellar flotation of a lead-zinc sulphide ore.Minerals Engineering, Volume 4, Issue 2,1991, Pages.133-140.
[38]Srdjan M.Bulatovic.Flotation of Lead-Zinc Ores.Handbook of Flotation Reagents,2007, Pages:323-366.
[39]GL.Small, S.R.Grano, J.Ralston, N.W.Johnson.Methods to increase fine mineral recovery in the Mount Isa Mines lead/zinc concentrator.Minerals Engineering, Volume 10, Issue 1, January 1997, Pages:1-15.
[40]万宏民.硫化钠在铅锌中矿分选中的应用矿产保护与利用,2000,04：42-45.
[41]黄礼煌,吴观寿,吴和燕等.乐昌铅锌矿铅锌硫浮选分离新工艺研究.有色金属(选矿部分),1-5.
[42]林美群,魏宗武,莫伟等.广西某难选铅锌矿石铅锌分离试验研究.金属矿山,2007,10：72-74.
[43]刘全军.从云南边境某选矿尾矿中回收铅锌的工艺试验研究.有色金属(选矿部分),2005,05：22-24.
[44]N. P. Finkelstein.The activation of sulphide minerals for flotation:a review.International Journal of Mineral Processing, Volume 52, Issues 2-3, December 1997, Pages:81-120.
[45]M. Barbaro.LEAD AND ZINC ORES:FLOTATION.Encyclopedia of Separation Science, 2007, Pages:3215-3218.
[46]何发钰,孙传尧,宋磊.磨矿环境对方铅矿和闪锌矿矿浆化学性质的影响.金属矿山,2006,08：30-33.
[47]温英,王巧华.贵州沿河铅锌矿选矿试验研究.湖南有色金属,1996,01：27-29.
[48]S. M. Bulatovic, D. M. Wyslouzil.Development and application of new technology for the treatment of complex massive sulphide ores case study-Faro lead/zinc concentrato r-Yukon.Minerals Engineering, Volume 12, Issue 2, February 1999, Pages:129-145.
[49]F.J.M. Von Reeken, J. Lange, J J.S. Steensma, Willem P.C. Duyvesteyn.Factors affecting the lead-zinc separation at the Grund concentrator.Intemational Journal of Mineral Processing, Volume 27, Issues 1-2, September 1989, Pages:21-37.
[50]S.R. Grano, J. Ralston, N.W. Johnson.Characterization and treatment of heavy medium slimes in the Mt. Isa mines lead-zinc concentrator.Minerals Engineering, Volume 1, Issue 2,1988, Pages:137-150.
[51]戴惠新,王春秀.低硫铅锌矿选矿工艺的研究.广东有色金属学报,2001,05：17-20.
[52]刘德军,代淑娟,秦贵杰.内蒙古某铅锌矿铅锌分离的研究与实践.有色矿冶,2000,06：8-11.
[2]胡德勇,牛建英.全面提升我国铅锌矿产资源利用水平.中国矿业,2006,06：8-9.
[3]王福良,邵广全,刘万峰等.第十届选矿年评-铅锌矿石选矿.孙传尧,2006,12.
[4]缪建成,王方汉,刘如意等.南京铅锌银矿电位调控浮选的研究与应用.有色金属(选矿部分),2000,01：5-8.
[5]罗仙平,王淀佐,孙体昌.会理难选铅锌矿石电位调控抑锌浮铅优先浮选新工艺.有色金属,2006,08：94-98.
[6]赵明福,唐宝勤,徐祥彬等.吉林省某铅锌矿石选矿工艺试验研究及应用.黄金,2007,12：39-43.
[7]叶贤东.提高会理锌矿铅锌回收率的试验研究：[硕士学位论文].昆明,昆明理工大学,2000.
[8]刘万峰.河北某难选铅矿石选矿试验研究.有色金属(选矿部分),2009,03：10-13.
[9]王仁东,李振典,杨小峰.云南某氧化铅矿的浮选试验研究.矿产保护与利用,2009,04：30-32.
[10]李兵容.某半氧化铅矿石选矿工艺试验研究.有色金属(选矿部分),2008,01：16-18.
[11]邱廷省,周源,罗仙平.复杂难选高氧化率铅锌硫化矿石浮选工艺研究.有色金属(选矿部分),2003,02：37-40.
[12]夏青,尹艳芬,李晓波等.西部某氧化铅锌矿选矿试验研究.金属矿山,2009,06；83-86.
[13]胡熙庚.有色金属硫化矿选矿.北京：冶金工业出版社,1987.
[14]刘守信.云南某地铅锌多金属硫化矿选矿试验研究：[硕士学位论文].昆明,昆明理工大学,2007.
[15]陈喜峰,彭润民.中国铅锌矿资源形势及可持续发展对策.有色金属,2008,08：129-131.
[16]熊文良,童雄.云南铅锌选矿存在的问题与对策.国外金属矿选矿,2003,08：9.
[17]黄仲权.发挥资源优势强化云南铅锌业基础.地质找矿论丛,2001,‘03：47-49.
[18]雷力,周兴龙,文书明.我国铅锌矿资源特点及开发利用现状.矿业快报,2007,09：1-4.
[19]薛亚洲,王海军.我国铅锌矿资源综合利用现状.中国矿业,2005,08：41-42.
[20]胡熙庚,黄和慰,毛钜凡.浮选理论与工艺.长沙：中南工业大学出版社,1991.
[21]许时.矿石可选性研究.第二版.北京：冶金工业出版社,1989.
[22]叶贤东.提高会理锌矿铅锌回收率的试验研究：[硕士学位论文].昆明：昆明理工大学,2000.
[23]王熙.车河选矿厂铅锑浮选新药剂及工艺技术研究：[硕士学位论文].长沙：中南大学,2004.
[24]陈波.大厂铅锌分离浮选氰化钠抑制机理研究及新药剂的开发：[硕士学位论文].南宁：广西大学,2005.
[25]黎维中.难处理铅锌银硫化矿物资源综合回收的研究与实践：[博士学位论文].长沙：中南大学,2007.
[26]王强.强化铅锌矿中伴生银回收的试验研究：[硕士学位论文].沈阳：东北大学,2004.
[27]伍敬峰.凡口铅锌矿矿泥浮选新工艺研究：[硕士学位论文].长沙：中南大学,2002.
[28]钟素娇.磨矿对方铅矿和闪锌矿浮选行为的影响研究：[硕士学位论文].长沙：中南大学,2006.
[29]王淀佐.浮选剂作用原理及应用.第一版.北京：冶金工业出版社,1982.
[30]张尊.高碳脆硫锑铅锌矿浮选新工艺研究：[硕士学位论文].南宁：广西大学,2007.
[31]韩聪.氧化铅锌矿石浮选试验的研究：[硕士学位论文].沈阳：东北大学,2007.
[32]许春富.澜沧难选富银铅锌矿选矿试验研究：[硕士学位论文].昆明：昆明理工大学,2006.
[33]谢雪飞.凡口铅锌矿银矿物资源综合回收的研究与实践：[硕士学位论文].长沙：中南大学,2004.
[34]戴晶平.凡口铅锌矿硫化矿物的浮选电化学与电位调控浮选研究：[硕士学位论文].长沙：中南大学,2002.
[35]林美群,魏宗武,陈建华等.新型抑制剂DZ在铅锌分离中的试验研究.矿产保护与利用,2008,02：30-32.
[36]魏明安,孙传尧.硫化铜、铅矿物浮选分离研究现状及发展趋势.矿冶,2008,06：6-15.
[37]J.Rubio, J.A.Solari.Lamellar flotation of a lead-zinc sulphide ore.Minerals Engineering, Volume 4, Issue 2,1991, Pages.133-140.
[38]Srdjan M.Bulatovic.Flotation of Lead-Zinc Ores.Handbook of Flotation Reagents,2007, Pages:323-366.
[39]GL.Small, S.R.Grano, J.Ralston, N.W.Johnson.Methods to increase fine mineral recovery in the Mount Isa Mines lead/zinc concentrator.Minerals Engineering, Volume 10, Issue 1, January 1997, Pages:1-15.
[40]万宏民.硫化钠在铅锌中矿分选中的应用矿产保护与利用,2000,04：42-45.
[41]黄礼煌,吴观寿,吴和燕等.乐昌铅锌矿铅锌硫浮选分离新工艺研究.有色金属(选矿部分),1-5.
[42]林美群,魏宗武,莫伟等.广西某难选铅锌矿石铅锌分离试验研究.金属矿山,2007,10：72-74.
[43]刘全军.从云南边境某选矿尾矿中回收铅锌的工艺试验研究.有色金属(选矿部分),2005,05：22-24.
[44]N. P. Finkelstein.The activation of sulphide minerals for flotation:a review.International Journal of Mineral Processing, Volume 52, Issues 2-3, December 1997, Pages:81-120.
[45]M. Barbaro.LEAD AND ZINC ORES:FLOTATION.Encyclopedia of Separation Science, 2007, Pages:3215-3218.
[46]何发钰,孙传尧,宋磊.磨矿环境对方铅矿和闪锌矿矿浆化学性质的影响.金属矿山,2006,08：30-33.
[47]温英,王巧华.贵州沿河铅锌矿选矿试验研究.湖南有色金属,1996,01：27-29.
[48]S. M. Bulatovic, D. M. Wyslouzil.Development and application of new technology for the treatment of complex massive sulphide ores case study-Faro lead/zinc concentrato r-Yukon.Minerals Engineering, Volume 12, Issue 2, February 1999, Pages:129-145.
[49]F.J.M. Von Reeken, J. Lange, J J.S. Steensma, Willem P.C. Duyvesteyn.Factors affecting the lead-zinc separation at the Grund concentrator.Intemational Journal of Mineral Processing, Volume 27, Issues 1-2, September 1989, Pages:21-37.
[50]S.R. Grano, J. Ralston, N.W. Johnson.Characterization and treatment of heavy medium slimes in the Mt. Isa mines lead-zinc concentrator.Minerals Engineering, Volume 1, Issue 2,1988, Pages:137-150.
[51]戴惠新,王春秀.低硫铅锌矿选矿工艺的研究.广东有色金属学报,2001,05：17-20.
[52]刘德军,代淑娟,秦贵杰.内蒙古某铅锌矿铅锌分离的研究与实践.有色矿冶,2000,06：8-11.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |