老厂锡粗精矿伴生钨硫的综合回收试验

分析了云锡老厂锡粗精矿中钨硫矿物的特点、钨物相、钨矿物解离等情况,重点对锡粗精矿进行了硫钨浮选试验。结果表明,锡粗精矿经闭路磨矿、1粗2扫1精浮硫、1粗3扫2精常温浮钨的闭路流程处理,可获得硫品位为35.78%、硫回收率为96.36%的硫精矿,WO3品位为5.02%、WO3回收率为50.19%的钨精矿,以及锡品位为29.28%、锡回收率为96.42%的锡精矿。     

某钨矿山多金属硫化矿综合回收试验研究

针对某钨矿山多金属硫化矿的矿石性质特点,开展了优先浮钼—铜铋混合浮选工艺、优先浮钼—浮铜—浮铋工艺和钼铜混合浮选—浮铋—浮锌的工艺流程对比试验,结果表明:采用钼铜混合浮选—浮铋—浮锌的全流程工艺,可获得含钼53.50%、回收率为92.72%的钼精矿,含铋11.30%、回收率为58.71%的铋精矿,含铜22.89%、回收率为87.62%的铜精矿,含锌55.28%、回收率为73.22%的锌精矿;而且铋精矿中含银9 000 g/t、含铅58.23%,回收率分别为66.89%、77.40%;同时浮选尾矿进一步回收可获得含钨38.52%、回收率为79.57%的钨精矿,实现了钼、铋、铜、锌、铅和钨的综合回收。     

卡房低品位难选多金属矿综合回收生产实践

为了充分利用云南卡房新山缓倾斜难选极低品位多金属矿床资源,在工艺矿物学研究、小试、连选试验的基础上,采用"硫化矿混合浮选—混合浮选精矿铜钼与铋硫分离—铜与钼分离、铋与硫分离;浮硫尾矿抑钙浮钨—白钨粗精矿加温精选"工艺,并完成了日处理3000 t低品位多金属矿生产系统的产业化建设。虽然生产中由于原矿铋和钼品位大幅降低没有生产铋精矿和钼精矿,但仍获得了钨精矿WO3品位50.76%、回收率56.82%,铜精矿品位9.93%、回收率62.33%的生产指标,具有较好的指导意义和推广应用前景。     

江西某低品位复杂铜钨多金属矿石浮选工艺研究

江西某铜钨复杂多金属矿石铜品位为0.11%、硫品位为1.16%、WO₃含量为0.22%。矿石中白钨矿、黄铜矿均以中细粒嵌布为主,白钨矿在0.01~0.3 mm粒级占79.55%,黄铜矿在0.01~0.3 mm粒级占81.83%。为给该矿石的开发利用提供依据,在矿石性质分析基础上,采用铜硫混合浮选-分离浮选、混浮尾矿浮钨的工艺流程进行了试验。结果表明：原矿磨细至-0.074 mm占65%,以水玻璃为抑制剂、SN-9为捕收剂、BK201为起泡剂经2粗3精2扫铜硫混合浮选,混合浮选精矿以石灰为抑制剂、Z-200为捕收剂经1粗4精2扫铜硫分离浮选,混合浮选尾矿以碳酸钠为调整剂、水玻璃为抑制剂、W-1205为捕收剂经1粗3精3扫常温钨浮选,常温浮选精矿经1粗5精2扫加温（90 ℃）钨浮选,获得的铜精矿铜品位为24.13%、回收率为68.90%,硫精矿硫品位为36.15%、回收率为60.77%,钨精矿WO3品位为62.24%、回收率为73.68%,试验指标较好,可以作为该铜钨多金属矿开发利用的技术依据。     

江西某多金属矿中铜钨资源的综合回收

江西某铜钨多金属矿石含铜 0.72%、含 WO3 0.11%,具有较高的开发利用价值,为了实现该多金属矿中 铜、钨资源的综合回收,对该矿石进行了详细的工艺矿物学和选矿试验研究。结果表明,该多金属矿中矿物种类较 为复杂,白钨矿、黄铜矿嵌布粒度以中细粒为主,单体解离度良好,硫化矿物和钨矿物的相互关系不是十分密切。针 对该矿物特点,采用“铜硫硫化矿混浮—硫化矿浮选尾矿浮白钨矿”的流程,在磨矿细度为-0.074 mm 占 78% 条件 下,以丁基黄药为铜硫混合浮选捕收剂,经 1粗 1扫铜硫浮选,铜硫混合粗精矿以石灰为 pH 调整剂经 1粗 1精 1扫铜 硫分离浮选,铜硫浮选尾矿以碳酸钠为调整剂、水玻璃为抑制剂、硝酸铅为活化剂、GYB+GYR为钨矿物混合捕收剂, 经 1 粗 1 扫粗选,所得钨粗精矿再磨至-0.045 mm 占 85%,进行 4 次精选,闭路试验获得了含铜 24.78%、含金 0.40 g/t、 含银 1 000.00 g/t,铜回收率 90.02% 的铜精矿,以及 WO3品位 35.32%、WO3回收率 65.25% 的钨精矿,实现了有价金属 的综合回收,为该铜钨资源的开发利用提供了技术依据。     

湖北某铜尾矿资源化利用研究

湖北某铜尾矿中有价组分为WO3、Cu、S、Fe,为实现该铜尾矿的资源化利用,开展了详细的综合回收试验研究。结果表明：① 采用铜硫混合浮选、铜硫混合精矿再磨后铜硫分离浮选工艺流程处理试样,闭路试验可获得产率0.10%、Cu品位13.80%、Cu回收率21.71%的铜精矿以及产率1.22%、S品位44.50%、S回收率50.89%的硫精矿。② 采用2粗2扫1精常温浮选处理铜硫混浮尾矿,常温精矿浓缩至60%,再加温至90 ℃,搅拌、解吸80 min后采用1粗2扫5精加温精选、中矿顺序返回的工艺流程,最终获得产率0.93%、WO3品位15.31%、WO3回收率55.07%的钨精矿产品;该钨精矿进行酸浸提质,最终获得产率0.40%、WO3品位34.19%、WO3回收率53.04%的酸浸钨精矿。③ 针对钨粗选尾矿,采用弱磁选工艺可获得产率3.73%、TFe品位60.45%、回收率15.66%的铁精矿。     

某复杂难选铜铅锌多金属矿选矿试验研究

工艺矿物学研究表明,某铜铅锌多金属矿石性质复杂、铜铅锌共生关系密切,嵌布粒度细,有用矿物种类繁多,有害杂质砷含量较高,分选难度极大。采用优先浮选原则流程对某复杂铜铅锌多金属矿进行了试验研究。试验以"弱捕收弱抑制"为原则优先依次浮铜、铅、锌、硫,取得了相对较好的分选指标。闭路试验结果获得的铜精矿品位20.78%、铜回收率76.38%,铅精矿品位66.25%、铅回收率46.46%,锌精矿品位49.61%、锌回收率76.31%,硫精矿硫品位48.56%、硫回收率32.95%,银在铜铅锌精矿中得到富集,银的综合回收率为74.01%。     

江西某铜硫钨多金属矿选矿工艺研究

江西某铜硫钨多金属矿是我国大型的矽卡岩型白钨矿床,含Cu 0.11%、S 2.95%、WO30.75%,其主要金属矿物是黄铜矿、磁黄铁矿和白钨矿。通过多种选矿工艺流程探讨,确定采用磁选脱硫—铜硫混合浮选－白钨浮选工艺流程产出硫精矿、铜精矿及白钨精矿,获得的闭路试验指标为：硫精矿含S 30.16%,回收率77.58%;铜精矿含Cu 18.28%、回收率76.83%;白钨精矿含WO3 66.04%,回收率81.67 %。     

某含金银铅锌硫矿石银铅浮选工艺优选试验

为获得高品质的银铅精矿,对某高硫银铅锌多金属矿石分别进行异步浮选—粗精矿全部再磨浮选、异步快速浮选—中矿集中再磨浮选和分段分速异步浮选—粗精矿部分再磨浮选试验。试验结果表明：在磨矿细度为-0.074 mm 70%的情况下,分段分速异步浮选—粗精矿部分再磨浮选优于其余两种工艺,浮选流程获得的银铅精矿银品位621 g/t、银回收率54.18%,铜品位0.84%、铜回收率34.62%,铅品位62.78%、铅回收率89.42%,锌品位6.45%、锌回收率5.83%。     

广西某银铜多金属硫化矿选矿试验

广西某银铜多金属硫化矿石铜品位为1.01%,银含量为118.82 g/t,硫品位为19.17%,金属矿物之间共生关系密切,嵌布粒度不均匀。该银铜矿山为了进行资源可利用性评价,在矿石性质研究的基础上进行了选矿试验。试验结果表明:在磨矿细度为-0.074 mm 72.56%的条件下,采用1粗3精3扫浮铜—1粗2精3扫浮硫的原则工艺流程,可获得铜品位为23.78%,铜回收率为89.89%,银含量为2731.24g/t,银回收率为87.60%的铜银精矿;硫品位为44.36%,硫回收率为86.80%的硫精矿;伴生金属铋主要富集在铜银精矿中,铋品位为3.21%,回收率达70.25%,实现了该矿石资源的高效综合利用。     

Market and recycling of NiMH battery

<正>Market status and future trend of NiMH battery1.Global market of small NiMH battery Global market size of small NiMH batteries declined year on year since 2011.The trend will continue to 2018,at the rate of 5%to 10%annually.Demand for small NiMH batteries will be stable gradually.Many electrical apparatuses are powered by the built-in lithium battery today,which is the main reason for the shrunk market of small NiMH batteries.But,for some products,small NiMH     

China rare earth market review

正September 1-10,2014 Affected by the National Day holiday,rare earth transaction was stagnant and the market showed a weak steady state.As there was no good news for downstream market,some products with flat demand would likely rally slightly for some time to     

Current situation and future trend of China rare earth luminescent material industry

<正>Rare earth luminescent material is one of the most important application sectors of rare earths.China enjoys the exceptional advantage to develop rare earth luminescent material for its abundant rare earth resources.After several decades'endeavor,China's rare earth luminescent material industry,headed by rare earth phosphor for lamp and LED and high efficient rare earth energy-saving light source,has been gradually developed into a scale industry.China has become a major production base of rare earth phosphor for lamps and rare earth     

China rare earth market review

正June 1~10,2014Rare earth market remained weak.Quoted price of rare earth products was similar to that in May.There was no sign of recovery in downstream market.The market of NdFeB magnetic materials and phosphor was depressed.Catalyst,polishing powder and ceramic industries remained inactive.Demand from downstream industry was soft.Consumers purchased on their needs.Suppliers had strong intention to sell.Prices of rare earth products     

2014 second batch of rare earth quota released

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Annual Report analysis of Chinese rare earth-related listed companies in 2013

<正>Chinese rare earth-related listed companies have published their 2013 annual reports.It can be understood from their reports that production and operation activities of Chinese rare earth-related companies were still heavily affected by macro economy and industrial policies.They basically followed the steps of national economy.In 2013,world economy recovered slowly but the economy     

Market opportunities and challenges for rare earth polishing powder

正1.Status of rare earth polishing powder Rare earth polishing powder with high content of cerium oxide began to replace iron oxide for glass polishing and became one of the key materials in glass polishing process since 1940.Compared with traditional iron oxide,rare earth polishing powder has many advantages,such as fast polishing rate,high polishing quality and long service life.It can achieve good surface quality and improve operation conditions.For example,in lens polishing,the polishing work that cerium     

Baotou Research Institute of Rare Earths developed a new RE alloy preparation technology

正Pyrometallurgy Laboratory of Baotou Research Institute of Rare Earths had independently developed a new preparation technology of rare earth alloy for NdFeB.The alloy can remarkably enhance the coercivity of NdFeB magnet but also evidently reduce the production cost of the magnet.The new master alloy was prepared in the kA pilot-scale electrolytic cell by the independent technology.The rare earth master alloy can be used as the raw material for NdFeB.Compared     

China rare earth market review

正November 21~30,2014Due to weak demand from downstream industries,transactions of rare earth in Chinese domestic market were inactive.It was difficult to sell any rare earth products except for dysprosium oxide and terbium oxide.Suppliers lost confidence in recent market.Demand for rare earth products was soft.Consumers continued to take a wait-and-see attitude.Rare earth export market remained slow.     

Galaxy Magnets achieved the net profit of 34.02 million yuan in the first six months of 2014

正Galaxy Magnet announced its financial results for the first half of 2014 on August 14.For the first six months ended on 30 June 2014,Galaxy Magnet achieved operation income of RMB 182.3 million,up8.40% over the same period of 2013,and the net profit attributable to the shareholders of the listed company of 34.02 million yuan,increasing 35.49% over the same period of last year.Stable performance increase was led by development of new customers and application market of magnets.