会泽铅锌矿深部矿体工艺矿物学研究

通过合泽铅锌矿深部矿体矿石的工艺矿物学研究，查明矿物组成、主要矿物的嵌布特征以及铅、锌元意的赋存状态，阐明影响选矿工艺的矿物学因素。会泽铅锌矿深部矿体混合矿中，铅、锌矿物既有硫化物又有碳酸盐，脉石也为碳酸盐矿物。闪锌矿、方铅矿、黄铁矿、菱锌矿、白铅矿占总矿物量的72．15％。为提高矿石中铅、锌选矿回收率，矿石分阶段细磨，还应强化对矿石中菱锌矿及白铅矿的回收。     

陕西楠木树铅锌矿工艺矿物学研究

陕西楠木树地区氧化铅锌矿资源十分丰富,利用好这部分资源对陕西的铅锌矿产业有极大的现实意义.对陕西楠木树氧化铅锌矿石进行了工艺矿物学研究.利用多种分析检测手段对矿石的化学成分、矿物组成、菱锌矿粒度以及矿石的结构等进行了详细研究.陕西楠木树氧化铅锌矿石中有用矿物以菱锌矿、闪锌矿、方铅矿为主,少量硅锌矿、黄铁矿等.脉石主要为白云石、石英.矿石类型以氧化矿为主,矿石构造较为复杂.为陕西楠木树氧化铅锌矿选矿工艺的选择和开发提供了理论数据.     

云南兰坪氧化铅锌矿工艺矿物学研究

以兰坪金鼎矿区氧化铅锌矿为研究对象，采用化学分析、物相分析、X射线衍射分析、偏光显微镜分析等方式，查明矿石的结构构造、元素组成、矿物组成及含量、目的矿物的嵌布特征，目的矿物与其它矿物的共生关系，目的元素（铅、锌）的赋存状态。工艺矿物学研究结果表明，原矿中有用矿物为铅矿物和锌矿物，其中Pb品位为1.26%，Zn 品位为8.40%。矿石中铅主要赋存在白铅矿、方铅矿中；锌主要赋存在菱锌矿、异极矿及闪锌矿中；脉石矿物主要为方解石、石英、白云母、黄铁矿（白铁矿）等。铅锌矿物种类较多且与其它矿物的共生关系较为复杂，易泥化、易过粉碎的缺点将会严重影响铅锌品位和回收率指标。鉴于此，宜采用分段浮选，先选铅，脱泥后再选锌，该研究结果可以为兰坪氧化铅锌矿浮选工艺流程改造和合理开发利用氧化铅锌资源提供科学依据。     

四川某混合铅锌矿优先浮选试验研究

针对四川某混合铅锌矿氧化率高、矿物组成主要为方铅矿、闪锌矿、白铅矿、菱锌矿、石英、白云石的矿石性质特征,按照先硫后氧、优先浮选的分选原则,进行了硫化铅矿物、硫化锌矿物、氧化矿铅锌矿物的回收试验研究。闭路试验分别获得了Pb品位57.32%和45.57%的2种铅精矿、 Zn品位48.66%锌精矿以及Pb品位29.22%、Zn品位20.83%的混合精矿,铅锌综合回收率分别为91.35%、88.63%,可为同类型矿石开发利用提供参考。     

某氧化铅锌矿石工艺矿物学研究

某氧化铅锌矿石中,锌矿物有闪锌矿、菱锌矿、红锌矿、异极矿,铅矿物有方铅矿、白铅矿、铅矾、铅铁矾、磷氯铅矿。目前条件下,矿石中可回收的矿物为闪锌矿、菱锌矿、方铅矿、白铅矿。闪锌矿、方铅矿粒度细小,嵌布复杂,应适度细磨。矿石中含有铅矾、铅铁矾、磷氯铅矿等易泥化矿物,磨矿后应首先考虑脱泥。脱泥后优先浮选回收闪锌矿、方铅矿,浮选尾矿中的菱锌矿、白铅矿可使用硫化钠等药剂使其表面硫化,然后通过浮选回收,或利用其与脉石矿物的密度差异采用重选回收菱锌矿、白铅矿。     

分支浮选在氧化矿中的应用研究

<正> 在厂坝铅锌矿Ⅰ号矿体铅锌氧化矿试验中,为满足冶炼对铅锌混合精矿的要求,采用铅循环分支浮选工艺,取得了较好的效果。厂坝铅锌矿Ⅰ号矿体氧化矿石的铅锌矿物主要是菱锌矿、白铅矿,其次为闪锌矿、方铅矿;脉石矿物多为碳酸盐类;与金属矿物共生的主要以石英为主。原矿含铅1.06%,氧化率59.81%;含锌4.46%,氧化率90.97%。根据以往多次试验研究结果,这次试验采用先选铅后选锌的浮选工艺。即使用硫化钠、丁基黄药、松醇油浮选铅,使用硫化钠、混合胺、松醇油浮选锌。为强化药剂作用将硫化钠与混合胺先制备     

含碳含铁高锌低铅氧化矿浮选工艺改进

<正> 试样系含碳含铁高锌低铅氧化矿。矿石普遍被铁污染,对浮选极为不利。试验采用优先浮铅,然后浮锌依次精选的原则流程,针对提高氧化锌矿物选矿指标进行了探索。初步考察证明,改变原药剂制度,能取得较好指标。欲获得九级品以上(品位40%)的锌精矿,在浮氧化锌矿物之前,预先脱除一定量粒级的细泥,配合适当加温浮选是可以达到的。(一)试样的物质组成及理化性质试样为高氧化率铅锌矿石,矿石结构构造复杂,矿物间共生关系密切,且彼此呈包裹穿插交代等状态存在。金属矿物有菱锌矿、褐铁矿(针铁矿、水铁矿)、白铅矿、闪锌矿、赤铁矿、菱铁矿、异极矿、黑锌锰矿、铅矾,微量矿物有黄铜矿、铜蓝等;脉石矿物有石     

云南兰坪某氧化铅锌矿的利用试验

<正> (一) 矿石性质矿样取自云南省兰坪县某铅锌矿。矿石中锌矿物以闪锌矿为主,其次为菱锌矿、铁菱锌矿、水锌矿、异极矿及黑锌锰矿等;铅矿物有方铅矿、白铅矿、铅矾、铅硬锰矿以及磷氯铅矿;铁矿物有黄铁矿及褐铁矿等,含量较少;脉石矿物以方解石、石英为主,白云石、高岭土次之。     

内蒙某含锌矿石的工艺矿物学研究

为了探索内蒙某锌矿石的工艺矿物学特性,对该矿石开展了系统性的工艺矿物学分析,结果表明：该矿石中含锌8.25%,矿石中硫化锌中的锌占40.12%,碳酸锌中的锌占49.09%,硅酸锌中的锌占8.39%,其它部分锌含量为2.42%;矿石中的主要锌矿物有菱锌矿、闪锌矿(含铁闪锌矿)、异极矿;另有黄铁矿、磁黄铁矿、褐铁矿、赤铁矿、磁铁矿等铁矿物,方铅矿、白铅矿,铅硬锰矿等铅矿物,微量的黄铜矿和赤铜矿等铜矿物;脉石矿物主要由石英、方解石、重晶石、天青石和少量或微量的云母(绢云母、黑云母等)、长石(钾长石、钠长石、斜长石等)、粘土矿物、辉石、闪石、绿泥石等组成,为该矿石资源的开发提供了主要的参考依据。     

会泽铅锌矿伴生稀散金属锗的选矿富集行为分析

会泽铅锌矿为特高品位富锗银铅锌多金属矿,伴生稀散金属锗的赋存状态可能以类质同象的形式进入矿物的晶格、吸附形式存在于有机质中和以独立矿物的形式存在,锗主要赋存在锌矿物中,闪锌矿、硅锌矿、菱锌矿中的锗合计占总锗的95.72％.在选矿生产中,锗主要富集在锌精矿中,锌精矿中锌的回收率为94.65％,但锗回收率为78.89％,锌...     

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     

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     

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     

唐口煤矿深部复杂开采工作面瓦斯分源涌出规律研究

研究工作面瓦斯涌出规律对工作面瓦斯治理有重要意义。为了得到唐口煤矿深部3号煤层复杂开采条件下工作面回采时期瓦斯涌出时空演化规律,选取6304工作面作为对象,采用实测方法研究6304工作面瓦斯涌出规律。结果表明:6304工作面瓦斯涌出量为6.534 m³/min,其中煤壁占34.27%,落煤占29.62%,采空区占36.11%;沿工作面倾向由低到高,瓦斯浓度整体为上升趋势,其中1—76号架工作面瓦斯浓度小于0.20%,76—102号架瓦斯浓度上升明显,最大为0.387%;上隅角的后部采空区是工作面的瓦斯主要涌出源,上隅角1号测点瓦斯浓度0.78%,上隅角周边3号、5号、7号、8号、9号测点瓦斯浓度平均为0.643%;周期来压时,上隅角瓦斯相对平时较高。研究为针对性的瓦斯分源监控与灾害防治提供基础。