异极矿的氨法浸出研究

以氨-硫酸铵体系浸出某异极矿型硅酸锌矿，考察了浸出剂浓度、NH3和（NH4）2SO4摩尔浓度比、液固比、时间、温度和搅拌速率等因素对异极矿中锌浸出率的影响，并分析了相应的浸出机理，得到的最佳实验条件为：总氨浓度8．5mol／L，NH3和（NH4）2SO4摩尔浓度比2：1，液固比20，反应温度45℃，搅拌速率250r／min，浸出时间1h。在最佳条件下。锌浸出率达93．84％。     

高碱性氧化锌矿氨性浸出研究

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%。     

用加压氨浸法从低品位铅冰铜中浸出铜锌试验研究

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。     

从瓦斯灰中碱浸锌及其动力学研究

研究了用氢氧化钠从瓦斯灰中提取锌,考察了氢氧化钠浓度、固液质量体积比、浸出温度、反应时间及搅拌速度对锌浸出率的影响。试验结果表明:在初始氢氧化钠浓度为6mol/L、固液质量体积比1∶10、浸出温度80℃、反应时间60min、搅拌速度600r/min条件下,锌浸出率为63%。浸出反应动力学分析结果表明,锌浸出过程受扩散与化学反应混合控制。     

含锌危险废物的碱法浸出研究

简述了针对含锌废渣综合利用工艺的现状和不足，提出含锌废渣碱法浸出的新方法，试验得到了较佳工艺：当氢氧化钠浓度为6mol／L、温度为90℃、浸出液固比为10：1时，锌浸出率达91．5％；浸出液体经过净化处理后电沉积可达到《锌粉（GB／T 6890—2000）》一级标准的锌粉，浸出渣中有害元素均低于浸出毒性鉴别标准值（GB5085．3—1996），可作为一般废渣处理，为含锌危险废物的综合利用和处理提供了有效途径。     

NH_3-NH_4~+-CO_3~(2-)体系浸出电镀污泥中铜、镍试验研究

研究了用NH3-NH+4-CO2-3体系从电镀污泥中浸出铜、镍,考察了总氨浓度、氨铵物质的量比、液固体积质量比、浸出温度、浸出时间对铜、镍浸出率的影响。结果表明:在总氨浓度为9 mol/L、氨铵物质的量比为1∶2、液固体积质量比为4∶1、浸出温度为70℃、浸出时间为4h的最优条件下,铜浸出率达95.02%,镍浸出率达88.4%。     

氨法浸出电镀废渣中镍铜的工艺

实验采用NH3-NH4+-H2O体系浸出电镀废渣中镍和铜,通过正交试验研究了总氨浓度、氨铵比、液固比、温度、浸出时间对浸出率的影响.结果表明,在总氨浓度为6 mol/L、氨铵比为1∶1、液固比为8∶1、浸出温度80℃、浸出时间3h的最优条件下,镍的浸出率可达到82％,铜的浸出率可达到95％.     

在碱性介质中浸出和沉淀电弧炉灰尘中的重金属

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。     

铜冶炼烟灰碱浸渣氨浸工艺

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%.     

氧化锌矿浸出试验研究

研究了氨—氯化铵体系(NH_3-H_2O-NH_4Cl)中含铜铁高的氧化锌矿的浸出行为,探讨了浸出温度、浸出液总氨浓度、浸出时间和液固比对锌浸出率的影响。结果表明,最佳浸出条件为:总氨浓度7.5mol/L、浸出温度50℃、液固比8∶1、浸出时间2h,在最佳浸出条件下锌浸出率达到94.8%。     

Acceleration of Electricity Reform Brings Benefit to Big Electricity Users,Aluminum Manufacturers Can Save Costs Up to Several Hundred Million

<正>Recently the National Commission of Development and Reform again assembled experts to solicit opinions,and discussed new electricity reform program.According to information disclosed by experts attending the meeting,in the future electricity reform will undergo top-down design,possibly a     

Qinghai's Aluminum Processing Capacity to Rise at the End of the Year

正Since the release of Implementation Opinions on Carrying out‘Guiding Opinions of the State Council on Resolving Serious Production Overcapacity Conflicts’,according to the actual situation of industry,Qinghai has focused on electrolytic aluminum,cement,ironsteel(including iron alloy and silicon carbide),     

Recent Trends in China's Copper Scrap Market-Part Ⅱ

<正>2.Tianjin Scrap Metal Market In Tianjin,we mainly visited Jinghai Ziy Town scrap market and Binhai New Area’some copper scrap enterprises and enterprise using copper scrap.In Ziya we felt the coppe scrap market was particularly deserted,mos copper scrap enterprises in the town wer closed,industry insiders said in 2012 the plac here was bustling with activity.According to     

Shanghai Clearing House to Roll out Renminbi-denominated Copper Clearing Operations in Free Trade Zone

正Clearing House Financial Markets Co.,Ltd.(Shanghai Clearing House)General Manager Xie Zhong told the media recently at the briefing of the international symposium of"Reform Deepening and Mechanism Innovation of the Post-crisis Kerb Market",Shanghai Clearing House will explore the feasibility of carrying out bond business in     

Development and Application of New Materials for Copper Processing in China

正After over 60 years of developmnt,a system for RD and production of copper processing materials has already taken shape in China.After the reform and opening-up,the application of copper processing materials has gradually expanded from the military industry to civil field.The annual output of copper     

China’s Mineral Exploration Market Downturn Causes Decline of Investment in Bauxite

<正>According to a survey report conducted recently by China Geological Survey Development Research Center,in the first half of 2014,China’s mineral exploration market continued to decline,with the investment in exploration of non-fuel minerals dropping by13.7%and drilling workload dropping by21.7%.According to statistical analysis of the Center,     

Chinalco and China National Administration of Coal Geology Jointly Built Guangxi Rare Earth Industrial Base

正On June 3,Chinalco and China National Administration of Coal Geology signed cooperation agreement for strategic cooperationcooperation agreement between Chinalco Guangxi Nonferrous Rare Earth Development Company and Xuzhou Jin Shi Pengyuan Rare Earth Material Factory.According to the agreement,both sides would jointly support Chinalco Guangxi Nonferrous Rare Earth Development Company and Xuzhou Jin Shi Pengyuan Rare Earth Material Factory to carry out comprehensive cooperation covering rare     

Aluminium Production by Province or City in 2014

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Fabricated Copper Production by Province or City in 2014

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Zinc Production by Province in 2014

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