从某低品位金钼粗精矿中浸出金、钼试验研究

研究了从某金钼粗精矿中浸出金和钼,考察了氧化浸出、加压氧浸和焙烧浸出对金、钼浸出率的影响,确定了氧化焙烧—碱浸钼—浸钼渣氰化浸出金的工艺流程。最佳条件下,钼浸出率大于90%,金浸出率大于95%。     

用低品位钼粗精矿制备工业氧化钼试验研究

研究了用低品位钼粗精矿制备氧化钼,确定的工艺流程为钼粗精矿—氧化焙烧—多次循环碱浸—浸出液除磷—沉淀粗钼酸钙—除硫—沉淀钼—煅烧—氧化钼。试验结果表明:在580℃下氧化焙烧1.5h,9次循环碱浸,钼平均浸出率为85.42%;浸出液中除磷、硫过程中,钼回收率分别为99.64%、99.66%;钼综合回收率为84.82%,所得产品符合GB/T 24482—2009工业氧化钼质量要求。     

焙烧工艺条件对钼精矿氨浸的影响

研究了焙烧工艺条件对钼精矿浸出及回收率的影响,并采用XRD、SEM等手段对焙砂和浸出渣进行了表征。结果表明,在温度较低时,由于钼精矿氧化不完全,致使钼精矿的氨浸和回收率都比较低;温度过高时,虽然氨浸率维持较高的水平,但回收率有所降低。随着焙烧时间的增加,氨浸率和回收率先逐渐增大后趋于稳定。在600℃焙烧2h及适宜的浸出条件下,钼浸出率达到93.54%,在浸出液中加入适量碳酸钠,可使钼精矿浸出率增加至97.5%。浸出渣中主要含有CaMoO_4和SiO_2。     

低品位金钼混合精矿提取金钼新工艺

采用氧化焙烧脱硫、除碳—碳酸钠溶液浸出钼—浸钼渣氰化提金新工艺处理某金钼混合精矿。结果表明,在下述最佳试验条件下:粗精矿于600℃氧化焙烧1.5h、钼焙砂加入矿重40%的碳酸钠后按液固比3~4在80~90℃浸出1.0~1.5h,钼浸出率为91%,浸钼渣金的氰化浸出率大于95%。     

难选铜钼矿铜钼分离新工艺研究

以某地斑岩型铜钼矿浮选产出的铜钼混合精矿为原料,经650℃焙烧后先用水浸出部分铜,浸铜渣用纯碱浸出钼,钼浸出率达96 05%,浸出液中的钼可用沉淀法回收。铜在浸钼渣中的品位达27 93%,并含有13 8g/t金和144g/t银。     

高铜钼精矿湿法浸铜工艺试验研究

对某铜矿钼品位43.49%、含铜3.37%的钼精矿进行了湿法浸铜工艺试验。结果表明:酸浸除铜和化学氧化-酸浸除铜工艺,铜浸出率较低,钼损失率较高,未能提高钼精矿钼品位;CJ-1溶液除铜工艺铜浸出率高,钼损失率低,可达到提高钼精矿钼品位并降低含铜的目的。     

某低品位难选钼铅矿选矿试验研究

某低品位钼铅矿中钼铅矿物粒度较细且不均匀,部分细粒辉钼矿、方铅矿与脉石矿物之间呈包裹关系,难以分选。研究了浮选钼—重选铅—钼精矿浸出除铅流程。其中:浮选钼采用一次粗选—两次预精选—粗精矿再磨—四次精选流程,获得的钼精矿品位为53.68%,回收率为88.33%;钼精矿品质为特级。铅精矿品位为60.10%,回收率为36.58%;铅精矿品质为二级。分选效果较好。     

焙烧钼精矿氨浸浸渣回收钼的实验研究

采用碳酸钠加氧化剂回收焙烧钼精矿氨浸浸渣中的钼,使氨浸渣中钼含量由5.0%降到1.0%左右,回收率90%;同时对5 g/L左右的碱浸液,采用溶剂萃取法进行回收,通过萃取、洗涤、反萃等工艺参数控制,使碱浸液钼含量从5 g/L降到0.5 g/L以下,反萃液钼含量90 g/L左右,达到钼的回收利用目的。     

钼矿选矿技术进展

叙述了钼矿选矿工艺和选矿设备,油类和黄原酸盐类混合捕收剂,絮凝浮选,用硫酸锌与亚铁氰化钾分离滑石与辉钼矿,碱浸-浮选高氧化率钼矿石,离子浮选,采用浮选氧压氧化浸出浮选工艺从低品位钼精矿生产纯三氧化钼。     

含金氧化钼矿石选矿试验研究

某含金钼矿石,钼氧化率高达68.5%。对该矿石采用优先浮选辉钼矿,将金富集到硫化钼精矿中,然后再浮选氧化钼矿物,硫化钼精矿经脱药抑制辉钼矿后氰化浸出回收金的工艺流程,使矿石中钼和金得到综合回收。选冶试验指标为:原矿钼品位0.52%,金1.53g/t,硫化钼精矿品位44.38%,氧化钼精矿品位23.6%,钼回收率78.2%,金回收率57.81%。     

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.