组合捕收剂浮选回收某尾矿中萤石的试验研究

某钨铋浮选尾矿中含Ca F2 15.41%,属于低品位萤石矿,仍具有一定回收价值。研究以碳酸钠为调整剂、水玻璃为抑制剂、油酸与CM-10组合使用作捕收剂浮选该萤石矿,结果表明,在原矿含Ca F2 15.41%条件下,闭路试验获得了含Ca F2 95.23%、回收率55.74%的萤石精矿产品,该矿石中萤石与含钙脉石矿物得到了有效分离。     

某低品位单一石英型萤石矿的可选性试验研究

某单一石英型萤石矿含Ca F2 21.55%,Si O2 61.78%,属于低品位萤石矿。在工艺矿物学研究基础上,以常规药剂碳酸钠作调整剂、水玻璃作抑制剂,BK-410作捕收剂,采用"1粗6精2扫"的浮选工艺流程,小型闭路试验获得萤石精矿Ca F2品位95.37%,回收率为85.82%的FC-95级别的萤石产品,较好地回收了萤石矿物。     

某钨多金属矿伴生萤石浮选试验研究

某钨多金属矿伴生有萤石资源,其钨浮选尾矿含19.66%CaF₂、45.01%SiO₂、2.99%CaCO₃,具备综合回收利用价值。针对该含萤石尾矿,开展了工艺矿物学研究及浮选试验研究,采用AP作为萤石浮选捕收剂,GA作精选抑制剂,经1次粗选7次精选的浮选闭路试验,得到萤石精矿Ca F₂品位为95.60%,Ca F₂回收率为67.74%,较好地实现了该伴生萤石资源的综合回收。     

石油磺酸钠在江西某石英型萤石矿中的浮选应用

萤石作为主要的含氟矿物,其在多个工业领域都具有重要的应用。萤石的常规浮选捕收剂油酸钠存在着水溶性较差的缺点,石油磺酸钠作为捕收剂时展现出良好的耐低温性,但少有其在萤石选矿中的应用。本试验以江西某地萤石矿为研究对象,进行石油磺酸钠浮选萤石的实际矿物浮选试验。结果表明:通过"1次磨矿,1粗4精"的流程试验,获得了品位为97.45%,Ca F2回收率为89.54%的萤石精矿。     

某低品位萤石重晶石矿综合利用技术研究

黔北某低品位萤石重晶石矿主要由萤石、重晶石和方解石组成,在工艺矿物学研究的基础上,以EM-2作萤石捕收剂,改性水玻璃作方解石抑制剂,EM-326F作重晶石抑制剂,采用"萤石优先浮选-重晶石重选"的联合工艺流程,获得了酸级萤石精矿和重晶石精矿,实现了浮选回水的循环利用。试验表明,萤石通过"2粗5精,部分中矿再选"的浮选流程,获得了萤石精矿CaF_2品位98.51%,回收率86.24%;萤石次精矿CaF_2品位60.44%,回收率3.92%;萤石总回收率90.16%的指标。萤石浮选尾矿采用"1粗1扫1精,中矿与扫选精矿再选"的全溜槽重选工艺流程,可获得重晶石精矿BaSO_4品位89.15%,BaSO_4回收率70.78%的指标。     

综合回收某含铁萤石矿的选矿试验研究

在开展某含铁萤石矿工艺矿物学研究的基础上,采用磁选-浮选联合工艺对该矿石中的有价组分进行综合回收。结果表明,在原矿含Ca F2 25.42%、Fe 12.51%的条件下,最终可获得含Ca F2 97.05%、回收率67.35%的萤石精矿,含Fe 62.37%、回收率39.33%的铁精矿产品,较好实现了该矿石中有价组分的综合回收。     

从湖南某白钨浮选尾矿中回收萤石的试验

湖南某多金属矿矿物组成复杂,嵌布关系密切,含铁、钨、硫等有价元素,Ca F2品位20.08%,利用价值较高。为有效回收该白钨矿石浮选尾矿中的萤石,进行浮选试验。结果表明,在抑制剂水玻璃用量500 g/t、捕收剂BK410A用量200 g/t的条件下,白钨浮选尾矿经1粗7精1扫闭路浮选流程处理,可获得Ca F_2品位94.05%、回收率58.63%的萤石精矿,实现了萤石的高效回收利用,可为工业流程的确定提供参考。     

从某黑白钨尾矿中回收萤石的试验研究

某黑白钨浮选尾矿含CaF225.12%,采用预先磁选-萤石浮选的工艺流程,以Na2CO3为调整剂,水玻璃为抑制剂,BK410为捕收剂,进行1次粗选、6次精选、2次扫选的闭路浮选,进行萤石的回收试验研究,最终可获得含 CaF297.15%,回收率69.89%的精矿产品,较好地对萤石进行了回收。     

白云鄂博尾矿萤石浮选工艺研究

以白云鄂博尾矿浮选回收稀土后的尾矿为原料,进行了浮选回收萤石的工艺研究,采用的工艺为:以苛化淀粉和水玻璃的组合药剂作抑制剂进行一段浮选,然后分级磨矿,最后以酸化水玻璃作抑制剂进行两段浮选。通过这一工艺,可从原料获得Ca F2品位95.37%、回收率68.27%的萤石精矿。     

某稀土矿尾矿综合回收萤石和重晶石试验研究

西南某稀土尾矿中含CaF_2 15.33%,含BaSO_4 13.27%,属于伴生低品位萤石-重晶石矿产资源,具有一定的回收价值。针对试样组成性质,在磨矿细度-0.074 mm为72.61%,采用碳酸钠为p H调整剂、水玻璃为抑制剂、油酸钠为捕收剂,进行"1次粗选、2次精选、2次扫选"的萤石-重晶石混合浮选流程,得到萤石与重晶石混合精矿,混合精选采用水玻璃为分散剂,苛性淀粉为重晶石抑制剂,油酸钠为捕收剂浮选萤石,经"1次粗选、2次扫选、6次精选"的浮选闭路试验流程,最终得到了CaF_2品位96.83%、回收率89.36%的萤石精矿,获得BaSO_4品位91.22%,回收率70.31%的重晶石精矿,较好地实现了该尾矿中萤石与重晶石的综合回收。     

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     

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     

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     

2014 second batch of rare earth quota released

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矿用防爆轴流对旋主要通风机叶片ANSYS模态分析及应用

高效节能矿用防爆对旋主要通风机的叶片是主要通风机运行的关键部件,叶片在运行时不断受到气流的作用力,从而使叶片产生振动,当叶片振动的频率与叶片的固有频率接近时,容易产生共振从而导致叶片的断裂。一旦叶片断裂时,对主要通风机的安全运行产生致命的影响,从而导致矿山、化工等企业发生重大事故,将会产生不可估量的损失。基于有限元分析软件ANSYS,对高效节能矿用防爆轴流对旋主要通风机叶片进行模态分析及产生对应的六阶模态频率,对主要通风机叶片的运行频率、固有频率及产生的共振问题进行了原理分析,并且解决了叶片频率共振的问题,从而为主要通风机叶片结构设计提供理论依据,并对主要通风机叶片的安全运行提供保障。     

2013 NdFeB export analysis

<正>China totally exported nearly 24,000 tonsof NdFeB products during 201 3,including 18,825 tons of permanent magnet,valued USD 1.34 billion at an average price of 71.4 USD/kg;3,277 tons of NdFeB magnetic powder,valued USD 1 01 million at an average price of 30.9 USD/kg;1,334 tons of strip casting ribbon,with total export value of USD 74million at an average price of 55.3 USD/kg;and 586