从酸法地浸液中吸附铀的钼中毒树脂解毒处理

研究了采用离子交换法对从酸法地浸液中吸附铀的钼中毒树脂的解毒处理,考察了解毒剂NaOH浓度、解毒接触时间及解毒剂体积对树脂解毒的影响。试验结果表明:在解毒剂NaOH质量浓度100g/L、接触时间60min、无需添加辅助剂条件下,解毒剂用量为5BV时,树脂钼去除率达91.2%,解毒后树脂吸附铀的饱和容量可恢复至初始时的99%。     

离子交换法从钨钼氧化矿浸出渣洗水中回收钼、钨试验研究

某钼、钨氧化矿经高压浸出后,浸出渣洗水中Mo、WO3质量浓度分别为5.74g/L、1.76g/L,研究了用离子交换法从该洗水中回收钼、钨。试验结果表明:洗水pH为4~5时,D314树脂可同时吸附钼、钨;控制流速为2BV/h,处理量为25BV时,钼、钨吸附率分别为99.62%和99.46%;用2.5BV的2mol/L氨水溶液解吸,解吸液酸沉钼、钨,得到钼质量分数为50.88%、钨质量分数为9.88%的氧化钼钨产品。     

用D314离子交换树脂从沉钼后液中回收钼

研究了以D314离子交换树脂从某沉钼后液中吸附回收钼。试验结果表明:D314树脂对钼的吸附效果较好,溶液pH控制在4.0左右,钼吸附率为93.40%;负载树脂用0.8g/L氨水溶液进行解吸,钼解吸率达94%。     

特种离子交换树脂从钼酸铵溶液中深度分离钒

研究了采用特种阴离子交换树脂分离钼酸铵溶液中的钒。首先,采用静态吸附考察了料液平衡pH、料液钼浓度、氯离子浓度、吸附时间等因素对分离过程的影响;然后,进行动态交换实验,采用料液pH=8.01,接触时间60 min,处理料液为67倍树脂体积时,除钒率达到99.83%,树脂对V2O5工作交换容量为78.7 g/L,钒钼分离系数达到22522.9;用2 mol/L的NaOH溶液可以对负载树脂实现彻底解析。     

富镓物中镓的浸出、分离试验研究

对明矾石精矿经焙烧-焙砂硫酸选择性富集后所得的富镓物进行NaOH浸出、离子交换分离试验研究。结果表明,NaOH浸出过程中,在NaOH浓度75%、浸出时间15min、L/S=3∶1、搅拌速率300r/min下,Ga浸出率可达98.84%。离子交换过程中,在吸附原液NaOH浓度150g/L、Rexp-31树脂用量150g/L、喷淋速率5 mL/min、树脂床高15cm的条件下,Ga吸附率为71.4%;在解吸剂中NaOH浓度160g/L、Na2S浓度50g/L、L/S=10∶1,解吸时间1h的条件下,Ga解吸率可达88.16%。     

从低品位钼铅矿中提取钼的试验研究

研究了从氧化钼矿石中回收钼,考察了NaOH质量浓度、温度、时间、液固体积质量比对钼浸出率的影响。试验结果表明:在NaOH质量浓度80g/L、温度95℃、液固体积质量比3∶1条件下浸出矿石120min,钼浸出率达80%以上;浸出液先以Na2S溶液沉铅,再以HCl溶液调节pH=8除硅,然后再用HCl溶液调节pH=2.5,用D314大孔弱碱性阴离子交换树脂吸附钼,用10%NaOH溶液在40℃下解吸钼,钼吸附率及解吸率分别达到95%和97%。     

从高温合金电溶液中回收铼酸铵的工业试验

采用移动密实床离子交换柱吸附—固定床离子交换柱解吸—蒸发冷却结晶等工序进行高温合金电溶液中铼的高效回收工业试验。结果表明,采用移动密实床交换柱吸附—固定床离子交换柱解吸和再生,可使整个离子交换系统连续运行;采用15BVs 8%NH4SCN溶液解吸铼时,可使流出液含铼浓度降至1mg/L;采用20BVs 2mol/L H2SO4溶液使树脂再生时,再生树脂对铼吸附率仍可达99.97%,且吸附后液含铼浓度可降至0.4mg/L;采用6倍理论用量CaCl2沉钼时,钼沉淀率为99.69%;最终所得铼酸铵产品纯度达到99.99%。     

717型阴离子交换树脂分离富集 光度法测定

研究了717型阴离子交换树脂柱分离 富集钼的条件,建立了光度法测定铜精矿和尾矿中微量钼的方法。在pH为7.5的条件下,钼以MoO４２ 形式被717型阴离子交换树脂定量吸附后,采用2 mol/L HNO3和0.5 mol/L NH4NO3混合溶液定量洗脱,消除了绝大部分共存离子的干扰。通过树脂柱分离 富集后,用硫氰酸钾分光光度法测定钼的检出限为5.6 μg/L,相对标准偏差（RSD）为2.2 % (n=5),加标回收率在96.2 %～105.7 %之间,实际样品测定结果与ICP AES方法测定值基本一致。     

用离子交换树脂从拜耳法种分母液中吸附钼的研究

研究了多种离子交换树脂在强碱性条件下从拜耳法种分母液中吸附钼的性能。结果表明,1#树脂的吸附性能最好,理想条件下的工作吸附容量为10 g/L(湿树脂)以上;负载树脂用C溶液解吸,可以得到钼质量浓度8~10 g/L的解吸液,钼解吸率在72.3%以上。另外,也考察了溶液的运行方式、树脂重复使用效果等。     

石煤提钒后液中钼的回收

用离子树脂交换法回收石煤提钒后液中的钼,首先通过树脂选择实验选出最佳树脂D314,然后用动态方法研究不同条件对D314树脂吸附性能的影响。结果表明在pH=3、吸附接触时间90 min、钼浓度10.24 g/L时,D314树脂对钼的吸附性能最好,工作吸附容量可达162.8 mg/mL,负钼树脂在解吸剂氨水浓度为12%、解吸时间90 min时,解吸效果较好。     

熔炼次数对M17返回料合金成分、组织和性能的影响

实验结果表明,M17铸造高温合金(%:0.16C、8.79Cr、5.79A1、4.93Ti、3.29Mo、15.20Co、0.78V、0.015B、0.073Zr、0.002S、0.001P、0.001 1O、0.001 0N)经25 kg真空感应炉返回重熔后,Si含量随重熔次数的增加而略有增加,合金中主要元素和其它杂质元素S、P、H的含量变化不大,而氧、氮略有增加;合金中初生碳化物由新合金中的草书体逐渐向返回合金块状转变,初生碳化物的遗传性堵塞合金凝固时的补缩通道,使返回料合金的疏松倾向增大,高温塑性下降较大。     

Shijiazhuang will Build the World's Biggest Replacingcopper-with-aluminum Cable Production Base

正Shijiazhuang City will build the world’s biggest replacing-copper-with-aluminum cable production base,the annual output value can reach 100 billion yuan,in the future it will develop replacing-copper-with-aluminum highend industry cluster.This piece of news was learned by the reporter at the Rare Earth highiron Aluminum Alloy[Nonferrous Business Opportunity:Aluminum alloy door]Cable Conductor New Technology Application Seminar held at the provincial capital.     

Chongqing is Preparing to Set Up Nonferrous Metal Exchange,in a Bid to Become the Transit Place of Kazakhstan Copper

正Since the beginning of Chongqing’s upgrading to a municipality directly under the Central Government,Chongqing City has established direct friendly relationship with Almaty,Kazakhstan,and carried out a series of cooperation in commerce and trade,and culture     

Guangxi Baise Extends Industrial Chain to Combat Loss in Aluminum Business

正"For each tonne of aluminum being produced,the upstream enterprise on the aluminum industrial chain will suffer loss about 2000yuan."Said Liang Xiao,Deputy Director of Pingguo Industrial Park Management Committee under the Guangxi Baise City,one of the four major aluminum industry bases in China,on August 11.Extending aluminum     

JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL ANNUAL CONTENTS Volume 21(2014)

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Chinalco Straightened Out Copper Assets,and Delegated Stock Equity of Yunnan Copper

正Immediately after the news that Chinalco transferred 58%stock equity of Yunnan Copper Group to its wholly-owned subsidiary China Copper Corporation Limited free of charge was disclosed on July 9,many individual investors couldn’t help but to think:Does it mean China Copper Corporation Limited will assemble assets for overall listing?At present,among main copper business companies under China Copper Corporation     

The Development and Reform Commission Encourages Private Capital to Enter Geological Prospecting Field

正At the press conference recently held by the National Development and Reform Commission under the theme"Deepen Reform in Investment AuditApproval System",when answering questions from reporters,Huang Min,Director of the Department of Fixed Assets Investment of the National Development and Reform Commission,said that in the future it would continue to intensify efforts in geological prospecting,and actively guide social capital to enter this field.     

Guangxi's first Nickel Industry Development Research Report Was Released

正Recently,Guangxi Metallurgical Research Institute,a subsidiary of Guangxi Nonferrous Metals Group,completed survey on laterite and related manufacturers in the region,by combining the current development status of laterite both at home and abroad,it compiled Guangxi’s first"Research Report on the Development of Guangxi Nickel Industrial Chain"which adopted laterite as the study subject.This report expounded on the current     

China’s Major Non-ferrous Metals Imports & Exports(End of September. 2014)

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China's Major Non-ferrous Metals Imports & Exports

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