含铟转炉渣的热活化浸出

以硫酸为浸出剂,采用热活化浸出的方法处理含铟0.4%的转炉渣回收铟。考察了热活化温度、热活化时间、硫酸初始浓度、液固比、浸出温度、浸出时间等因素对铟浸出率的影响,并比较了热活化浸出和常规浸出的试验结果,确定了热活化浸出的最佳条件:液固比(mL/g)5∶1、初始酸浓度6 mol/L、浸出温度363 K、浸出时间5 h、热活化温度1 323 K、热活化时间3 h。在最佳试验条件下,铟的浸出率由常规浸出时的50.32%提高到81.32%。     

从富铟高铁闪锌矿中加压浸出锌铁铟试验研究

对富铟高铁闪锌矿进行加压酸浸,考察磨矿时间、氧分压、反应时间、温度、初始硫酸质量浓度、液固体积质量比、搅拌速度对锌、铁、铟浸出率的影响。结果表明:适宜条件下,锌、铟浸出率分别为99%和96%;浸出过程中,温度和浸出液中残酸都较传统加压酸浸方法要低,工艺指标更先进。     

某次冰铜中有价金属加压浸出试验研究

以某厂次冰铜为原料,进行有价金属铜、锌、铟浸出实验。探究磨矿时间、液固比、氧气压力、初始酸浓度、搅拌速率、分散剂添加量对次冰铜中铜、锌、铟浸出率的影响。结果表明:最优条件下,某厂次冰铜中铜、锌、铟浸出率分别能达到95.32%、80.68%、70.25%;最优工艺为,磨矿时间7.5 min、液固比4∶1、氧气压力1.0 MPa、初始酸浓度20%、搅拌速率600 r/min、分散剂添加量5%。     

超声波辅助浸出铁矾渣中铟、锌试验研究

研究了将超声波引入到铁矾渣浸出过程中强化铟、锌浸出,对比了直接硫酸浸出和超声波辅助硫酸浸出铟、锌效果,考察了超声波功率、浸出时间、反应温度、硫酸浓度、液固体积质量比和机械搅拌速度对铟、锌浸出率的影响,并对2种方法的浸出渣进行XRD和SEM分析。结果表明:在其他条件相同情况下,酸浸过程中引入超声波可以加快铁矾渣的溶解,提高铟、锌浸出率;反应温度、硫酸浓度、超声波功率对铟、锌浸出率影响较大,浸出时间对铟浸出率影响较小而对锌浸出率影响较大,液固体积质量比和机械搅拌速度对铟、锌浸出率影响不大。该方法为铁矾渣中铟、锌的高效提取提供了一个可供选择的新方法。     

铜闪速炉烟灰硫酸化焙烧后焙砂浸出试验研究

考察了搅拌速度、浸出时间、初始硫酸浓度、浸出温度、液固质量比等条件对稀硫酸浸出铜闪速炉烟灰硫酸化焙烧所得焙砂的影响。结果表明,在下述最佳浸出条件下:搅拌速度400r/min、浸出时间70min、初始硫酸浓度0.8mol/L、浸出温度60℃、液固质量比5∶1,铜、铁、砷、铟等有价金属浸出率均在90%以上。     

机械辅助球磨浸出氧化锌烟尘中锌、铟、锗的试验研究

为了提高氧化锌烟尘中锌、铟和锗的浸出率,提出对其采用机械辅助球磨酸浸工艺处理,考察了球料比、终点酸度、反应温度、反应时间、搅拌速率及氧化剂对锌、铟和锗浸出率的影响。结果表明：采用机械辅助球磨二次酸浸工艺,在液固比5∶1、球料比1∶3、反应温度85℃、反应时间2 h、终点酸度120 g/L、搅拌速率800 r/min、不加氧化剂的条件下,锌、铟和锗的浸出率分别达到93.35%、91.25%和85.58%,相比原有工艺,浸出率均得到较大提升,浸出效果较好。     

铅反射炉含铟烟尘氧压酸浸的研究

采用氧压酸浸技术对铅冶炼富铟烟尘进行浸出试验研究,详细考察了硫酸用量、氧分压、温度、液固比、时间、粒度等因素对铟浸出效果的影响,确定了氧压酸浸的最佳条件。结果表明,在下述最佳条件下:初始硫酸浓度180g/L、氧分压0.8MPa、温度150℃、液固比5∶1、时间120min、反应物粒度0.15～0.12mm,铟和锌的浸出率分别达到96.74%和99.19%,渣含铟小于0.02%。     

硫酸浸出瓦斯灰中铟的试验研究

理论上分析了从瓦斯灰中浸出铟的可行性.试验采用硫酸浸出瓦斯灰提取铟.结果表明,在初始硫酸浓度为1mol/L,固液比1:5,浸出温度80℃,浸出时间2h,高速搅拌条件下,铟浸取回收率15.31%.     

高硅富铟渣氧压酸浸过程中浸铟沉硅的研究

采用氧压酸浸工艺处理高硅富铟渣,系统考察了始酸浓度、氧分压、反应温度、反应时间和液固比等对浸铟沉硅效果的影响。试验结果表明:在始酸浓度120g/L、液固比5∶1、釜内压力0.6MPa、反应温度160℃、反应时间1.5h的条件下,铟浸出率高达97.3%,硅沉淀率为98.5%;高压高温工艺能抑制富铟渣酸浸过程中硅胶的形成,浸出矿浆的过滤性能良好。     

沸腾焙烧烟灰浸出金、银、铜的研究

采用酸浸—氰化工艺从某沸腾焙烧烟灰中浸出金、银、铜。结果表明,较优工艺为:酸浸硫酸浓度1.0mol/L,液固比4∶1,反应温度90℃,反应时间4h,搅拌速度300r/min;氰化浸出反应液固比3∶1,氰化钠浓度0.2%,pH 10~11,反应时间48h,搅拌速度300r/min。此条件下,金、银、铜的浸出率分别为97.16%、79.98%、96.04%。     

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。     

China's Major Non-ferrous Metals Imports & Exports

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Zinc Production by Province in 2014

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80% of Chinese Firms Purchasing Overseas Mines Ended up in the Red

<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     

Copper Processing Profit Dropped Sharply,Copper Consumption Will Face Impact in the Second Half of the Year

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,     

Central Geological Prospecting Fund Newly Added 16.47 Million Tonnes of Bauxite in 2013

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     

Manufacturers of Copper Tube for Central Air Conditioner Use Face Mounting Pressure in the Final Quarter of the Year

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     

Xinjiang Ranks No.1 in Production of Primary Aluminum in China

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,     

Shenhuo Coal Industry and Electricity Power Completed800,000 t/a Aluminum Project in Xinjiang

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.     

Guangdong Metal Transaction Center has Become the Second Largest Precious Metal Transaction Platform Nationwide

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.