高铜金精矿提取金铜研究

本文研究了从高铜金精矿提取铜和和金的工艺方法，高铜金精矿经浮选分离含金铜精矿和含金硫铁矿，采用类似密闭鼓风炉熔炼的工艺处理含金铜精矿，铜和金的回收率均可达92～96%，冰铜品位可达20%左右，采用预处理-氰化工艺处理含金硫铁矿，金的氰化率可达79%，研究表明采用选、冶联合工艺提取高铜金精矿中的铜和金是可行的。     

石硫合剂法浸金硫化矿的研究

本文对用石硫合剂法浸金硫化矿进行了研究。在最优工艺条件下，金浸出率可达９７％，表明石硫合剂法是一极有前途的新型无氰碱法提金工艺。     

某难浸金精矿预处理新工艺试验研究

介绍了某难浸金精矿预处理工艺试验研究，研究结果表明：不经预处理，该金精矿的氰化浸出率仅为56％；经预处理后，氰化金浸出率可达93％。该预处理工艺具有对环境污染小，投资少，易操作等特点。     

某地浮选难处理金矿提金工艺探索试验研究

以浮选难处理金矿产焙砂为原料,试验氰化工艺提金效率可达55％,硫脲法提金效率可达60．34％,均较低。而试验氯化工艺时,研究出当盐酸加入量1．3倍（焙砂Fe理论耗量倍数）、氯化钠加入量90g/L、氯酸钠加入量为矿样量的10％,浸出时间6h和浸出温度85％时的浸金效率最佳可达87％。通过对氯化提金工艺进行简单热力学分析,得出增加盐酸和氯化钠的含量有利于氯酸钠浸金。     

高硫高砷金精矿细菌氧化-氰化浸金试验研究

采用细菌氧化-氰化浸金工艺处理高砷高硫金精矿，研究了不同矿石细度、矿浆浓度、细菌接种量、氧化温度、氧化时间和矿石硫、铁、砷的脱除率对金浸出率的影响。结果表明，在矿浆浓度为10％，氧化温度为32℃，氧化时间10d条件下，金浸出率可达85．1％；矿石中铁、硫、砷的脱除率分别为70．5％，58．7％和41．1％时，金的浸出率高达87．7％。该工艺与常规直接全泥氰化浸出相比，金的浸出率明显提高。     

浮选金精矿微生物氧化渣提金工艺试验研究

针对某含砷、含硫微细包裹类型难处理金矿石提金工艺进行了研究。该矿石常规氰化金浸出率仅为12.54%。通过对其浮选金精矿进行生物氧化预处理,并对生物氧化渣提金工艺的氰化法、氯化法、硫脲法进行了浸金对比试验。其结果表明,氯化法浸金效果最好,金浸出率可达94.73%,指标优于其他两种工艺。     

黄金精炼提纯工艺研究与生产实践

叙述了采用氯化法对黄金进行精炼提纯的研究用及工业生产。实践表明,采用该工艺,金的纯度可达９９．９５％以上,金回收率９９．９７％以上,而且工艺流程简单,设备组成合理,生产周期短,居国内领先地位     

环保型金、银提纯工艺试验研究

提出一项环保型金、银提纯工艺：采用HCl,NaClO3混合试剂对金泥进行预处理,用HCl,NaClO4,KMnO4混合试剂浸金,浸金贵液用Na2SO3还原金;浸金渣中的银用Na2SO3溶液浸取,然后在盐酸介质中用铁粉还原出金属银。试验结果表明：该工艺获得的金纯度可达99．9％,银的纯度可达99％以上,金、银回收率均在99．5％以上。     

从氰化金泥中提取金银新工艺的试验研究

提出了一种从氰化金泥中直接提取金银的新工艺，该工艺采用一种新型的浸金剂，在金泥未经预处理的情况下，金的一次浸出率达98％以上。用混合还原剂还原制得的粗金，经过电解，金的纯度达99．99％以上，采用电解法回收银，银的纯度可达99．9％以上，并且可综合回收铜、铅。     

载金炭常压解吸化学提金工艺及其应用

主要介绍了载金炭常压解吸化学提金工艺和应用效果。载金炭经预处理后,在105℃、常压解吸金,解吸责液经化学沉淀生成海绵金。该工艺的应用实践表明,金解吸率可达99％以上,解吸贫炭金品位在80g／t以下。     

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.