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1.
介绍了以三氯化铁作氧化剂,氯化钠提供氯离子,用盐酸从高温氧化后的铅阳极泥中浸出铋、锑,考察了氧化温度、盐酸浓度、浸出温度、反应时间、液固体积质量比、三氯化铁和氯化钠用量对铋、锑浸出率的影响。试验结果表明:铅阳极泥预处理对铋、锑浸出率影响较大;铅阳极泥粉磨过200目筛,在氧化温度220℃、盐酸浓度5mol/L、液固体积质量比5∶1、反应温度80℃、反应时间3h、三氯化铁质量浓度10g/L、氯化钠质量浓度45g/L条件下,铋、锑浸出率分别为99.44%和99.69%,浸出效果较好。  相似文献   

2.
正介绍了湿法提取铅阳极泥中铋锑的技术研究,考察了铅阳极泥的氧化温度、盐酸浓度、反应温度、反应时间、液固比、三氯化铁用量和氯化钠用量对铋锑浸出率的影响。实验结果表明,铅阳极泥预处理对铋锑浸出率影响较大,在铅阳极泥经粉磨过-200目筛后,当氧化温度为220℃,盐酸浓度为5mol/l,液固比为5∶1,反应温度为80℃,反应时间为3h,三氯化铁浓度为10g/l,氯化钠浓度为45g/l时,铋锑的浸出率分别达到99.44%和99.69%。  相似文献   

3.
采用湿法工艺处理卡尔多炉炉渣,回收有价金属铅、铋。考察了盐酸浓度、氯化钠浓度、温度、液固比及时间对氯化浸出的影响。结果表明,在液固比5、盐酸浓度1mol/L、氯化钠浓度300g/L、浸出时间2h、浸出温度70℃的较优条件下,铋、铅浸出率分别达到98.53%、90.22%;经中和、置换、酸洗后,得到海绵铅铋中铅铋含量可达94.73%。  相似文献   

4.
针对水浸脱铜渣的分金过程,进行浸出有价金属的优化试验,重点研究反应时间、工业硫酸加入量、工业盐加入量、水浸脱铜渣的粒度、液固比、终点电位对碲与铋浸出率的影响,结果表明:银浸出率很低,全部富集在脱金渣中,金、铂、钯的浸出率很高,水浸脱铜渣的粒度对碲与铋的浸出率影响不大。在保证贵金属高浸出率与生产成本控制的基础上,最大程度地提高碲与铋的浸出率,得到比较理想的控制条件为:液固比5∶1,加入NaCl量达到50 g/L,浓硫酸达到10 mL/L,缓慢加入氯酸钠,终点电位为1110 mV,恒温85℃,反应时间4 h。碲的浸出率达到96.56%,铋的浸出率达到80.19%。  相似文献   

5.
从铜阳极泥分银渣中回收铋和锑   总被引:3,自引:3,他引:0       下载免费PDF全文
采用硫酸与氯化钠的混合溶液浸出铜阳极泥卡尔多炉分银渣。结果表明,铋、锑被浸出进入溶液,铅转化为硫酸铅留在浸出渣中,从而实现铅与锑、铋的分离。在硫酸浓度2.5mol/L、氯化钠浓度125g/L、液固比4∶1、温度95℃、浸出时间4h的条件下,铋、锑、铅、银的浸出率分别为98.67%、91.17%、0.56%和0.76%,金几乎不被浸出。  相似文献   

6.
以某铜冶炼企业稀贵厂酸浸后的脱铜阳极泥为对象,试验考查了盐酸含量、液固比、反应时间和反应温度等对铋浸出的影响。试验结果表明,在盐酸含量2 mol/L、液固比5:1、反应时间0.5 h、反应温度90℃的条件下,铋具有最佳浸出效果,浸出率约77%,二次浸出后,浸出率可达97%以上,浸出渣率约70%。试验证明,采用盐酸—硫酸体系在卡尔多炉前端浸出脱铜阳极泥中的铋元素,降低卡尔多炉熔炼渣中铋的含量,减轻铋元素在冶炼体系中的富集,提高了卡尔多炉处理能力。  相似文献   

7.
某厂高银铋阳极泥产粗铋及综合回收有价金属,工艺采用两段浸出法处理此阳极泥,第1段硫酸浸出铜,第2段盐酸浸出铋.分别考察了浸出温度、时间、液固比(质量比)、酸量及氧化剂用量对浸出率的影响.铜的浸出率(液计)96%以上,铋、锑的浸出率(渣计)均在99%以上,铅、银富集于第2段浸出渣中,铅、银渣含Pb 26.63%左右,含Ag 36.77%左右,铅和银的直收率高,分别为97.82%及98.93%.浸出过程为串级联动循环浸出,洗酸洗水均返回下一次浸出,大大地减少了废水量,环境友好.  相似文献   

8.
采用工业食盐浸出铜阳极泥浮选尾矿中的铅,硫酸和工业食盐浸出尾矿中的锑、铋,考察液固比、温度、时间、NaCl浓度、H2SO4浓度对浸出过程中铅、锑、铋浸出率的影响.研究结果表明:液固比(质量比,下同)为5:1,浸出温度为80 ℃,浸出时间为2 h,NaCl浓度为6 mol/L时,铅、锑、铋的浸出率分别为72.2 %、7.83 %和10.77 %.液固比为5:1,浸出温度为60 ℃,浸出时间为2 h,H2SO4浓度为3 mol/L时,锑、铋的浸出率分别为74.97 %和84.27 %.锑、铋水解回收后,水解液可循环利用.   相似文献   

9.
研究了铜阳极泥脱铜渣采用盐酸加双氧水浸出渣中金、硒的工艺,考察了盐酸百分比浓度、双氧水用量、反应时间、液固比等条件下对铜阳极泥脱铜渣中金、硒的浸出率影响。实验结果表明:盐酸百分比浓度在25%,双氧水用量在0.5 m L/g_(-脱铜渣),反应时间3 h,液固比为3∶1的条件下,金、硒的浸出率分别达到了98.26%、92.84%。  相似文献   

10.
酸泥中含硒、铅、银、铜、锌等金属,用亚硫酸钠浸出其中的硒。在浸出过程中,主要研究了Na2SO3浓度、温度、时间、液固比等因素的影响。结果表明,在浸出过程中,硒进入溶液,而其他元素Ag,Cu,Zn,Fe等留在浸出渣中,浸出过程具有良好的选择性,硒的浸出率达到85%~90%。并获得了浸出过程的最佳条件:Na2SO3浓度220 g·L-1,温度120~125℃,反应时间120 min,液固比4∶1。同时研究了在亚硫酸钠浸硒体系中氯化钠及碳酸钠对硒浸出率的影响,在有添加剂氯化钠的条件下,硒浸出率能达到94%~96%,氯化钠的最佳用量是20~25 g·L-1;在添加碳酸钠的条件下,硒浸出率能达到96%~98%,碳酸钠的最佳用量是60~80 g·L-1。  相似文献   

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<正>Minmetals Resources acquired the world’s largest copper mine under construction for USD5.85 billion.One after another,listed companies Jien Nickle,China Molybdenum and Chihong Zinc and Germanium raised money to get involved in overseas mining projects…SOEs and private enterprises are engaged in a frenzy of overseas mine purchasing.A reporter with Economic  相似文献   

14.
正Judging from China’s copper consumption field,the biggest consumption unit is electric power,which accounts for 47%of total consumption;it is followed by light industry sector,including household electrical appliance,machinery,durable goods and hardware etc,which accounts for 22%of total consumption;followed by transportation field,  相似文献   

15.
正In 2013,the Central Geological Prospecting Fund(CGPF)Project newly discovered 15 ore fields,including 3 large above ore fields,and 5medium sized ore fields.The reporter learned from the recently published"Annual Report of Central Geological Prospecting Fund Project(2013)"that,from 2006 to 2013 the CGPF  相似文献   

16.
正This year,the investment growth rate of real estate industry continued to slow down,sold area of commercial housing also dropped significantly,which brought huge pressure to the domestic air conditioning manufactures.In the first half of the year,by relying on high growth in national financial expenditure,along with investment in public infrastructure  相似文献   

17.
正Kang Yi,Honorary Chairman of China Nonferrous Metals Industry Association,said recently at the Forum on Development of the Non-ferrous Metals Industry in Central and Western China held in Zhengzhou that,as more and more electrolytic aluminum factories in Xinjiang came into operation,the electrolytic aluminum output of Xinjiang had reached2,275,000 tons in the first 7 months this year,  相似文献   

18.
正"Xinjiang project has been completed according to schedule,but total completion and total start of production are two different concepts,after completion it still needs a gradual process of reaching production target."On the morning of November 3,Shenhuo Coal Industry and Electricity Power told investors the above statement on the investor interaction platform.  相似文献   

19.
正The reporter learned from Guangdong Province Precious Metal Transaction Center that in 2013the Center maintained healthy development momentum,and had become the second largest precious metal transaction platform in China in terms of market size;currently Guangdong is quickening steps of financial innovation for the Center,aiming to build a transaction center with international core competitiveness.  相似文献   

20.
正On May 22,Baotou Rare Earth Industry Cooperation Consultation MeetingProject Agreement-signing Ceremony was held in Ningbo,nearly 40 enterprises from Ningbo,Guangdong,Hunan,and Shanxi participated in project consultation.After multi-lateral communication,agreements were signed for a total of 7 rare earth projects successfully.  相似文献   

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