含钪钛矿石氯化焙烧—浸出分离钪研究

云南含钪钛矿石原矿含TiO212.68%、Fe 31.65%、Sc2O392 g·t-1,钪主要分布于钛辉石、钛磁铁矿和磁铁辉石中。采用螺旋溜槽重选—弱磁选—摇床重选工艺处理该矿石得到了Sc2O3含量为266 g·t-1,钪回收率为90.34%的钪精矿及TiO2为48.62%,钛回收率为55.95%的钛精矿。采用氯化焙烧和湿法浸出相结合的工艺进一步分离钪精矿中的钪,工艺条件试验结果表明,在氯化钠用量为4%、焙烧温度为900℃、焙烧时间为90 min、浸出液固比R=1.5∶1、盐酸用量为3%、浸出时间为75 min的综合条件下,钪的浸出率为83.39%~83.47%,浸出渣中钪含量为40.08 g·t-1~40.37 g·t-1。浸出渣的扫描电镜图谱分析显示,浸出渣中没有出现钪的谱线峰值,表明钪的溶解较彻底。     

某铜矿综合回收试验研究

采用选冶联合流程综合回收新疆某铜矿中有价金属。结果表明,先采用铜浮选得到品位18.01%的铜精矿,铜回收率达90%。选铜尾矿再磁选得到含钪54g/t、铁59.28%和钛19.08%的强磁精矿。强磁精矿在液固比5∶1、90℃、12 mol/L盐酸浸出2h时,钪、铁、钛的浸出率分别为92.58%、80.97%和13.88%。酸浸液采用P204+TBP萃取钪,钪萃取率达90%,总回收率85%以上;采用N235萃取铁,铁萃取率达99%,总回收率80%以上;采用酸浸—水解回收钛,钛总回收率85%以上。     

复杂硅酸盐含钪精矿钪浸出助浸剂试验研究

对复杂硅酸盐含钪矿进行了化学成分分析,钪物相的测定等的研究。研究是在复杂硅酸盐类矿物选钪试验的基础上,进行复杂硅酸盐含钪精矿浸出助浸剂试验研究,通过试验研究找到了合适的浸出液和适当的助浸剂,对有用离子进行浸出富集,对有害的离子使其保留在浸渣中。试样的钪以类质同象分布于多种复杂硅酸盐矿物中,研究采用盐酸添加浸出助浸剂来解离硅酸盐类矿物,把钪元素浸出在盐酸溶液之中。浸出助浸剂是影响钪浸出率的主要因素之一,在盐酸作为浸出试剂基础上,本研究对助浸剂种类、用量、液固比、浸出时间、盐酸浓度、浸出温度及入浸物料粒度等条件进行了试验研究。研究表明:(1)本试样的成分复杂,含众多杂质离子,包含对浸出有很大影响的的活泼金属离子,和对后续萃取有很大影响的钙、镁离子等杂质离子。(2)盐酸加二号助浸剂时钪的浸出效果最佳,其最佳工艺条件为:入浸物料粒度为-0.05 mm,液相中HCl质量分数为15.2%,液固比5:1,添加二号助剂量为4%,温度为90℃,连续搅拌浸出时间为12 h,钪的浸出率达88.33%。     

盐酸加助浸剂从钪精矿中浸出钪

进行了盐酸加助溶剂浸出钪精矿的条件试验,得出其最佳工艺条件为：盐酸质量浓度35．3g／L,液固体积质量比2.5：1,浸出温度90℃,浸出时间10h,物料粒度小于0．043mm,加7^#助浸剂,用量为40g／t。在最佳工艺条件下,钪的浸出率达80．47%。     

长江三峡淤砂提钪氯化焙烧工艺试验研究

以长江三峡淤砂为原料,在分选出钪精矿后以盐酸作为浸出介质,进行了钪精矿氯化焙烧—浸出工艺的试验研究,分别对氯化焙烧的氯化剂种类、氯化剂用量、氯化焙烧时间、焙烧温度等进行了试验研究。试验结果表明:长江三峡重庆段淤砂是以硅质岩屑及石英为主,含有少量铁和钛,微量的钇、镱及钪等成分;氯化焙烧的氯化剂以氯化钠为宜,氯化钠的用量以3%为宜,氯化焙烧时间以3h为宜,焙烧温度以800℃为宜。     

微波焙烧预处理从白云鄂博矿中浸出钪的实验研究

以白云鄂博矿经超导磁选之后的选铌尾矿作为实验原料,采用先微波焙烧后盐酸浸出的工艺,探究微波焙烧功率、时间、浸出温度、盐酸浓度以及液固比等对浸出钪的影响,确定浸出钪的工艺条件.实验结果表明,在微波功率560 W、微波焙烧时间18 min、浸出温度150℃、盐酸浓度10 mol/L、物料粒度400目占比70％、液固比4:1...     

云南复杂含钪多金属矿的综合利用试验研究

云南复杂含钪多金属矿原矿含Fe 26.65%,TiO_2 8.68%,Sc2O388.60 g·t~(-1)。矿石中有价矿物主要为磁铁矿、钛铁矿、金红石,钪主要分布于钛辉石和辉石中。采用螺旋溜槽重选工艺预选抛尾得到铁-钛-钪混合粗精矿;采用弱磁选—摇床重选分选工艺进一步分离混合精矿中的铁、钛、钪。试验结表明,在一段磨矿细度为0.154 mm占98%、混合粗精矿二段磨矿细度为0.038 mm占98%、弱磁选磁场强度H=0.10 T的综合条件下,得到了Fe品位为56.21%%,铁回收率为20.10%的铁精矿;TiO_2品位为48.68%,钛回收率为3.81%的钛精矿;Sc_2O_3品位为226.20 g·t~(-1),钪回收率为87.67%的钪精矿。实现了矿石中有价金属铁、钛、钪的综合利用,且钪精矿可作为后续工艺进一步提纯钪的原料。     

云南某含金多金属氧化矿选矿试验研究

云南滇西某含金多金属氧化矿,含有Au、Pb、Zn等有用组分,矿石深度氧化,较为难选。对该矿石进行了氰化浸出提金、硫化优先浮选铅锌、磁选回收铁、全泥氰化提金—浸出渣磁选除铁—摇床重选回收铅锌等试验研究。其结果表明:采用全泥氰化提金—浸出渣磁选除铁—摇床重选回收铅锌试验流程取得了较好的技术指标,金浸出率为83.33%;铅精矿品位达到合格产品要求(53.05%),回收率20.17%;锌精矿品位15.86%,回收率24.24%。     

从含钪钨精矿中提取金属钪的技术及方法

通过酸解作业,使黑钨精矿中的钨钪得到有效分离。适宜的酸解条件为:黑钨精矿粒度-48μm、盐酸浓度9mol/L、酸解浸出时间5h,在上述酸浸条件下钪的浸出率达到95%以上。在萃取剂组成为12%P204+煤油(O/A=1/5)+4%仲辛醇,经过一级萃取,萃取时间5min,酸解液中钪的萃取率达到95%以上,且钪和铁能较为彻底地分离。通过逆流酸洗除铁可将富钪有机相中的钪进一步富集,用2.5mol/L氢氧化钠对富钪有机相进行一级反萃,相比O/A=5,反萃时间5min,钪反萃率为99.90%。     

稀有金属富集渣中稀土和钪的提取

采用低温酸化—水浸工艺处理某稀有金属富集渣,考察了各因素对稀土和钪浸出率的影响,得到了优化试验条件:酸化温度130℃、酸料比1.4∶1、酸化时间24h、浸出液固比5∶1、浸出温度35℃、浸出时间3h,在此条件下,稀土浸出率85.92%,钪浸出率97.43%。     

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.     

Seven Rare Earth Projects Involving Close to 3 Billion Yuan Investment Landed In the HighTech Zone

正On May 22,Baotou Rare Earth Industry Cooperation Consultation MeetingProject Agreement-signing Ceremony was held in Ningbo,nearly 40 enterprises from Ningbo,Guangdong,Hunan,and Shanxi participated in project consultation.After multi-lateral communication,agreements were signed for a total of 7 rare earth projects successfully.