提高锡铁山铅锌矿中伴生金银回收率的试验研究

锡铁山铅锌矿原矿含铅3．65％、锌4．56％、硫14．85％、金0．44g／t、银44．50g／t。近年来,锡铁山选矿厂现场开展提高伴生金银回收率的工业试验研究,通过在铅浮选作业中添加新型捕收剂酯-116和新型调整剂T16两种药剂,强化铅、金、银矿物及其连生体矿物的浮选,提高伴生金银回收率。工业试验结论表明：铅精矿含金的回收率提高了5．77％,铅精矿含银的回收率提高了1．51％。     

甘肃东海金矿矿石浮选试验研究

甘肃东海金矿矿石采用堆浸工艺处理,金回收率仅为50％,银回收率为58％。为提高金、银回收率,根据该矿石性质,进行了浮选工艺回收金试验。浮选闭路试验结果表明,金的回收率达到87．13％,银的回收率达到90．23％。     

某氰化尾渣中金的浮选回收试验研究

某氰化尾渣金属矿物以黄铁矿为主,有极少量闪锌矿、方铅矿和黄铜矿,脉石矿物以石英为主。该尾渣中主要可回收元素为金,金主要赋存于黄铁矿等硫化物中,因其与硫化物关系密切,采用浮选法对其进行富集。经浮选条件试验及开、闭路试验研究,获得了不磨浮选金精矿品位25．01g／t,金回收率46.35％;再磨浮选金精矿品位47．50g／t,金回收率57．65％的较好指标。     

某含金多金属矿石的选矿试验研究

在充分论证和试验研究基础上，采用混汞－浮选联合流程及适宜的工艺条件，在原矿品位为Au7.18g/t、Ag47.7g/t、Cu0．207％的情况下，获得了浮选混合精矿含Au54.00g/t、Ag509g/t、Cu3.13%，混汞加浮选回收率分别为Au90.53%、Ag95．98％、Cu97.67%的指标；全泥氰化金浸出率为84．60％、银的浸出率78．60％。     

某含金银锰矿石选矿试验研究

某低磷高硫多金属原生碳酸锰矿石可供选矿回收的主要组分为锰,金、银可综合回收利用.针对矿石性质,试验采用浮选—磁选联合工艺流程回收锰、金和银.结果表明:在最佳试验条件下,获得了较高品级的锰精矿,且有价金属金和银有效富集在硫精矿中;硫精矿中银、金品位分别为945 g/t和10.30 g/t,银、金回收率分别为72.43％和...     

硫精矿中金,铜回收的研究

本文介绍了某金矿选矿厂硫精矿经磨细后氰化,重选和浮选回收金、铜的研究结果,推荐了细磨—浮选流程。当试料含金8.59g/t,铜1.17％和银40.70g/t时,浮选精矿含金165.47～117.15g/t、铜18.89～13.75％和银301.5～210.8g/t三者的回收率依次为77.11～81.15％、69.77～75.47％和38.22～39.72％;浮选尾矿含硫32.97％,可作制酸原料。该法由于产品方案与现行生产一致、流程设备简单、投资少、见效快、无污染,已被现厂采纳。研究结果对同类型矿山有一定推广价值。     

某金矿选矿厂工艺改造及生产调试

对某黄金选矿厂进行工艺改造,由原混汞＋浮选工艺改为单一浮选工艺。对改造后的浮选工艺进行生产调试,采取有效技术措施解决了存在的问题,使金精矿品位和回收率显著提高。改造后金精矿品位提高了11．38g／t,金回收率提高了4．58％,尾矿金品位降低了0．03g／t。同时减少了金属流失,降低了生产成本,使企业年增加经济效益200多万元。     

炼铜炉渣浮选回收铜的试验研究

对某冶炼厂连续吹炼炉炼铜炉渣进行了浮选回收铜试验研究。试验采用一次粗选、二次精选、二次扫选工艺流程,获得含金品位5.07 g/t、银品位293 g/t、铜品位29.31%的铜精矿,铜回收率为90.17%,金回收率为98.43%,银回收率为95.24%。     

浮选精矿氰化尾渣金、银回收研究

对致使含硫、砷浮选金精矿氰化浸出率低,尾渣全、银品位高的原因进行了分析;介绍了目前在提高氰化尾渣金、银浸出率方面所采用的措施,指出通过加入混合添加剂、采用两段焙烧、氰化前加入助浸剂共磨,可使尾渣中金、银的氰化浸出率提高到82．92％和61．54％,品位降至0．55g／t和30g／t。     

某氰化尾渣综合回收铜铅选矿试验研究

采用混合浮选工艺对氰化尾渣中铜、铅进行了综合回收.试验结果表明:采用石灰作为调整剂、硫酸铜作为活化剂、丁基黄药+丁铵黑药作为捕收剂,在一次粗选、两次扫选、四次精选混合浮选闭路工艺流程下,可获得铜、铅、金、银品位分别为18.50％、9.67％、19.41 g/t和850.22 g/t,回收率分别为85.02％、58.38...     

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.