黄金冶炼氰渣火法处理研究现状及展望

焙烧氰化尾渣是含金硫化矿氰化法提金产生的固废,占氰渣总量的50%以上。其中的金被铁矿石和脉石包裹,采用火法回收工艺才可有效回收金和铁。目前的火法回收工艺有氯化挥发焙烧法回收金银、还原焙烧—磁选法回收铁、氰渣-铜精矿协同冶炼同时回收金和铁。氰渣-铜精矿协同冶炼法具有高效性、经济性和环保性,前景更加广阔。     

提高龙头山金矿低品位矿石回收率试验研究

在原生产工艺基础上,对氰化尾矿进行浮选,对浮选金精矿进行回收金、银、铜等探索试验。试验取得了金的总回收率93.41%、银64.87%的较好指标,同时综合回收了铜、硫、铁,以实现了资源的充分回收与利用。     

从含铜、铅金精矿焙砂中综合回收金、银、铜、铅、铁的试验研究

提出了一个从舍铜、铅金精矿焙砂中综合回收金、银、铜、铅、铁的新工艺。试验表明,含金、铅金精矿焙砂经稀硫酸浸铜后,采用35%~40%硫酸浸出铁,再经25%~30%氢氧化钠浸铅,最后用氰化法浸出金、银,其浸出率分别为Au 98.73%、Ag 93.25%、Cu 91.37%、Pb 93.90%、Fe 88%,达到了从焙砂中综合回收金、银、铜、铅、铁等有价元素的目的。     

新技术与新成果

20 0 2 1 9　从金铜矿中提取铜铁金银硫的方法一种从金铜矿中提取铜、铁、金、银、硫的方法(CN1 1 895 4 1 A) ,主要包括用 Fe Cl3 浸出金铜矿 ,用隔膜电解法从浸出液中回收铜 ,用隔膜电解法生产铁和三氯化铁的再生 ,从浸出渣中回收硫磺 ,由铜渣中提取黄金和回收银等工艺过程 ,此种方法克服了火法炼铜工艺流程长、投资大、技术要求高等中小矿山和工厂难以承受的缺点 ,避免了制酸过程 ,实现了铜、铁、金、银、硫等有价元素的综合提取 ,投资省、见效快 ,特别适用于中小矿山。2 0 0 2 2 0　从镍锍中湿法冶金回收镍的方法本专利涉及一种在同一…     

氰化尾渣还原焙烧—烧渣浮选富集金铜的试验研究

某复杂多金属金精矿采用直接氰化工艺提取金银后产出的氰化尾渣含Au 1.20 g/t、Cu 0.52%、S 47.50%、Fe 41.02%,具有较高的回收价值。采用还原焙烧—烧渣浮选工艺流程回收金、铜等,在最佳条件下,获得的金铜精矿产率为9.52%,金、铜品位分别为15.20 g/t、6.82%,回收率分别为76.16%、78.20%;铁精矿产率为90.48%,铁品位为65.80%,铁回收率为95.26%,指标良好,实现了氰化尾渣中金、铜、硫、铁等有价元素的高效综合回收,经济效益和社会效益显著。     

钙镁磷肥副产镍磷铁的回收和提炼

根据我厂高炉法钙镁磷肥副产镍磷铁的回收提炼实际情况，简述了钙镁磷肥高炉镍磷铁的生成和回收、平炉吹炼一次合金、电炉炼制二次合金以及阳极板电解提纯金属镍的情况。     

难处理金铁矿石选冶工艺试验研究

难处理金铁矿石金4.06 g/t、铁25.10%。针对此矿石性质,通过对比分析原矿氰化浸出、重选、磁选、浮选—尾矿氰化浸出等工艺,选择适宜的处理工艺为氰化浸出—磁选联合工艺流程,且在最佳条件下,金浸出率为88.89%,铁回收率为75.28%,较好地实现了金和铁的综合回收,为选矿厂工艺设计提供依据。     

硫脲浸金及置换法从硫脲溶液中回收金研究现状

从电化学和热力学角度介绍了酸性条件下硫脲浸金研究现状,以及用置换法从酸性硫脲浸出液中回收金的基本原理,简要分析了铝、锌、铁、铅置换金的主要影响因素及相应的解决方案,指出了用置换法从酸性硫脲浸出液中回收金过程中存在的问题及改进的方向。     

祁雨沟混合金精矿的综合回收研究

祁雨沟金矿浮选混合金精矿金品位低、银、硫、铜、铅、铁等含量较高，用直接氰化法提金，浸金率低很，其中有价元素－－银、铜、铜、硫不能直接回收。通过试验，提出一条新工艺，即沸腾焙烧－酸浸、盐浸－氰化，可以使金的浸出率达９５．２３５，同时回收银８９．７７％、铜９７．２０％、铅９４．２０％以及大部分的硫和铁，使矿产资源得到综合透明和。     

新技术与成果

从金铜矿中提取铜铁金银硫的方法主要包括用FeCl_3浸出金铜矿,用隔膜电解法从浸出液中回收铜,用隔膜电解法生产铁和三氯化铁的再生,从浸出渣中回收硫磺,从铜渣中提取黄金和回收银等工     

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

正~~     

Zinc Production by Province in 2014

正~~     

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.