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以铜冶炼烟灰碱浸渣为原料,研究氨-硫酸铵体系的 pH 值、总氨浓度、氨铵摩尔比、液固质量比、反应温度、反应时间等因素对铜冶炼烟灰碱浸渣中铜锌浸出的影响规律.结果表明,最佳工艺条件为:总氨浓度为 5 mol/L、pH 值为 10、氨铵摩尔比为 2:1、液固质量比为 5:1,浸出温度为 70 ℃,浸出时间为 60 min.此条件下铜和锌浸出率分别为 90.6 %和 92.4 %. 相似文献
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研究了采用NH3·H2O-(NH4)2CO3体系从低品位铅冰铜中加压氨浸分离铜锌,考察了氨水浓度、氧气压力、搅拌速度、碳酸铵浓度、温度、液固体积质量比和浸出时间对金属浸出率的影响。结果表明:在氨水浓度3.5 mol/L、氧气压力0.8 MPa、搅拌速度800 r/min、碳酸铵浓度1.5 mol/L、温度100℃、液固体积质量比6/1条件下浸出4 h,铜、锌浸出率分别为81.99%和70.20%,而铁、铅浸出率仅4.11%和1.78%,铜、锌得到选择性浸出。 相似文献
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高碱性氧化锌矿氨性浸出研究 总被引:1,自引:0,他引:1
以NH3—NH4C1体系浸出某高碱性氧化锌矿,考察了氨浓度、液固比、时间和温度等因素对锌浸出率的影响,并分析了相应的浸出过程,得到的最佳实验条件为:NH3:NH4Cl摩尔浓度比为1∶1、氨浓度5 mol/L、液固比为3∶1、浸出时间为2 h、浸出温度40℃,此时锌浸出率为89.3%。 相似文献
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Gokhan Orhan在实验室研究了用碱液浸出并结合湿法和有利于环境的冶金方法处理电弧炉烟尘以回收其中的锌和铅。最佳条件为:温度95℃,液固质量比7:1,氢氧化钠浓度10mol/L,浸出时间2h。在此条件下,锌回收率为85%,铅回收率为90%。在50℃下进一步净化浸出液以回收金属杂质(Pb,Cu,Cd等)和使其适合于碱性电解锌。沉淀过程受化学控制,活化能为26.7kJ/mol。 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
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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
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《China Nonferrous Metals Monthly》2014,(10)
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
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《China Nonferrous Metals Monthly》2014,(10)
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
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《China Nonferrous Metals Monthly》2014,(10)
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
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《China Nonferrous Metals Monthly》2014,(12)
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
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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
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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