某含砷硫化锑矿石选矿试验研究

内蒙古某含砷硫化锑矿石中的锑主要以辉锑矿形式存在,砷主要以毒砂形式存在,研究了采用抑砷浮锑工艺对该矿石进行选别。矿石磨矿细度-74μm占80%条件下,通过一次粗选、一次扫选、一次精选工艺,获得锑品位43.75%的锑精矿,锑回收率为96.64%;锑浮选尾矿再经一次粗选、一次扫选、一次精选,获得硫品位28.42%、砷品位1.89%的硫砷精矿,硫、砷回收率分别为46.03%和67.38%,尾矿中硫、砷未超标,矿石分选效果较为理想。     

从辉锑矿中回收金和锑

难处理含金辉锑矿 (Ｓｂ2 Ｓ3 )在常规氰化过程中 ,锑与氰化钠反应生成稳定的化合物而使氰化物的耗量增加 ,而硫化物晶格中的金因为不能与浸出剂接触难以被浸出。用Ｎａ2 Ｓ和ＮａＯＨ碱性溶液预处理矿石可以破坏硫化物的晶格而使金被释放出来。Ｓ .Ｕｂａｌｄｉｎｉ等人研究了从难处理辉锑矿中提取金和锑的新工艺。含金辉锑矿来自玻利维亚Ａｎｔｏｆａｇａｓｔａ矿 ,主要组分为 :ＳｉＯ2 56.1 5%、Ｓｂ2 Ｓ3 1 3.2 5%、ＦｅＳ2 1 1 .51 %和Ａｌ2 Ｏ3 6.38% ,金、银品位分别为 30ｇ ｔ和 4ｇ ｔ。1 .用Ｎａ2 Ｓ和ＮａＯＨ预处理矿石。预处理…     

甘肃省肖家山锑矿矿石工艺矿物学研究

肖家山锑矿属于原生锑矿床,通过显微镜下鉴定、多元素分析、能谱分析等综合分析手段对锑矿床工艺矿物学进行了详细研究。查明锑以独立矿物形式存在,分别为辉锑矿、锑华、硫氧锑矿。矿石中与锑元素关系密切的矿物为石英、黄铁矿、白铁矿等,根据肖家山锑矿的锑矿石工艺矿物学特征知,该矿床推荐的选矿工艺为重选—浮选联合选矿流程。     

湖南某矿石综合回收黑钨和锑的选矿试验研究

依据工艺矿物学研究的矿石性质特点,研制了"优先浮辉锑矿-浮锑尾矿浮黑钨矿-黑钨粗精矿重选精选"的选矿工艺流程,对含WO3 0.86%、Sb 0.51%的给矿,获得了含Sb 24.60%的锑精矿,Sb回收率92.11%和含WO355.46%的黑钨精矿,WO3回收率77.41%。黑钨和锑均得到有效回收。     

锑金精矿矿浆电解阳极区选择性氧化浸出研究

研究了锑金精矿矿浆电解过程中阳极区硫化矿物选择性氧化分解热力学基础。结果表明,黄铁矿标准氧化分解电位较辉锑矿低,从热力学角度看,黄铁矿会被优先氧化分解;当溶液中加入Cl~-以后,辉锑矿和黄铁矿氧化分解电位都呈现下降趋势,其中辉锑矿下降更为迅速;在研究条件下,当Cl~-浓度大于2.05mol/L时,辉锑矿的分解电位小于黄铁矿,在热力学上使得辉锑矿优先选择性氧化分解成为可能。矿浆电解法处理锑金精矿实验中,锑的浸出率可超过98%,而铁的浸出率在8%以下,可实现锑的选择性浸出。     

氢氧化钾预处理对从难处理矿石中提取金、银的影响

<正>ībrahim Alpa等研究了用氢氧化钾预处理某难处理金银矿石然后再提取金、银。该矿石Au、Ag品位分别为20和220g/t。该矿石难处理的主要原因是存在辉锑矿(Sb2S3)、辉锑铅矿(Pb9Sb22S42)、锑铅银矿(Sb3PbAgS6)等含锑矿物。银在矿石中主要以锑铅银矿(一种金-银合金)、黝铜矿[(Cu,Fe,Zn,Ag)12Sb4S13]形式存在,也有少量以锑铅银矿形式存在;而金则与石英和含锑矿物相关。该矿石氰化浸出试验表明,浸出时间超过,金、银浸出率较低(分别,)。研究了氢氧化钾浓度     

锑金砷多金属硫化矿的浮选分离

对含有辉锑矿、自然金、黄铁矿、毒砂等多金属硫化矿矿石混合浮选后,粗精矿用碳酸钠调节矿浆PH值至11左右、添加硫化钠作辉锑矿抑制剂,浮选金砷硫,可获得金砷和锑两种合格精矿。     

湖南锡矿山锑矿床萤石地质特征及成因

湖南锡矿山锑矿床享有"世界锑都"之称,其矿床成因仍存较大争议.为了查明矿床成因,文章初步总结了锡矿山矿区热液成因萤石的基本地质特征,探讨了矿床成矿流体来源.研究表明,锡矿山矿区萤石一类呈浸染状产于页岩裂隙面,另一类与石英、辉锑矿共生,呈脉状、网脉状充填于硅化灰岩裂隙中,均为后期热液充填产物.通过探讨与辉锑矿共生萤石成因,结合前人研究资料,表明形成萤石-辉锑矿矿石的流体具有中低温、低盐度、低密度特征,并与岩浆有关.     

含锑矿石浮选药剂

讨论了重金属离子在辉锑矿浮选过程的活化作用机理及其在使用过程中必须注意的问题;介绍了3种常规捕收剂在分选不同类型含锑矿石时的选择性及配合使用相应的调整剂情况下的分选效果;对近年来含锑矿石浮选领域中开发出来的一系列新药剂进行了介绍。      

云南维西某锑矿选矿工艺试验研究

云南维西某锑矿含锑2.69%、铅0.35%、砷0.11%,锑氧化率仅占0.87%,属于硫化锑矿。针对该矿石性质,进行了浮选工艺试验研究,采用一次粗选、二次精选、二次扫选、中矿顺序返回工艺流程及合适的药剂制度,获得了较好选别指标,锑精矿产率为4.82%、品位51.40%、回收率94.55%。     

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.