使用返回水的铜锌矿石浮选制度

曾提出用返回水提高了锌矿物的浮游活性。列宁格勒选矿厂在用返回水条件下选择铜锌矿石浮选药剂制度,以探讨对锌矿物的抑制。以在苏打介质中用硫酸钠配合少量氰化物,在苏打介质中用硫酸亚铁与亚硫酸钠配合硫酸锌、石灰;亚硫酸钠与硫化钠配合硫酸锌、水玻璃;在石灰介质中用亚硫酸钠配合石灰、亚硫酸钠、硫化钠作为闪锌矿抑制剂时,铜精矿中锌的损失都不少于50％。探讨了在苏打介质中用硫酸锌、氰化物、     

某氧化铅锌矿浮选试验

某低品位氧化铅锌矿石,铅、锌矿物嵌布粒度较细,铅氧化率较高,氧化铅矿石在磨矿过程中容易产生Pb~(2+),对闪锌矿具有一定的活化作用,增大了铅、锌分离难度。采用硫化工艺,即在球磨机中添加硫化钠,既活化了氧化铅矿石,又减弱了Pb~(2+)对闪锌矿的活化作用。试验以硫酸锌+亚硫酸钠作为锌矿物的抑制剂,25~#黑药+丁铵黑药作为铅矿物的捕收剂,实现了对铅矿物的回收;铅浮选尾矿采用抑硫浮锌工艺,以石灰作为黄铁矿的抑制剂,硫酸铜作为闪锌矿活化剂,丁黄作为捕收剂,实现了对锌矿物的回收。最终闭路试验获得的铅精矿含铅66.25%、含锌4.60%、铅回收率为80.13%;锌精矿含锌57.93%、含铅1.84%、锌回收率为88.77%,试验指标达到了预期效果。     

宝山铅锌矿抑制剂作用研究

对宝山铅锌矿选矿的试验研究发现,在磨机中加入硫化钠调节矿浆电位,增加方铅矿与闪锌矿的可浮性差异,同时混合使用组合抑制剂硫酸锌和碳酸钠抑制闪锌矿,达到铅锌分离的目的.该组合药剂取代宝山铅锌选矿厂原有的氰化物浮选,实现了高效清洁生产.获得铅精矿含铅55.07％、铅回收率95.75％,锌精矿含锌55.62％、锌回收率96.0...     

某次生铜型高硫铜铅锌矿浮选工艺研究

某高硫铜铅锌矿中含有部分次生铜矿物,闪锌矿及黄铁矿在铜铅作业段容易上浮,影响浮选指标。因此针对这两种矿物的抑制剂开展了试验研究,研究结果表明：需要添加一定量的硫化钠来消除次生铜的影响;组合使用石灰、硫酸锌、硫化钠和BK612可以抑制铜铅浮选作业中的黄铁矿及闪锌矿;采用“铅铜等可浮-铜异步强化浮选-锌浮选”流程,能够解决次生铜及黄铁矿的影响,先获得铅铜混合精矿,再获得高品质铜精矿及合格锌精矿。     

矽卡岩型复杂铜锌硫化矿石分离的浮选研究

针对矽卡岩型复杂铜锌硫化矿石嵌布关系密切、闪锌矿受次生Cu2 + 活化的特点 ,提出了以硫化钠作为消除和固定矿浆中的Cu2 + (也有抑制闪锌矿和黄铁矿及脱药的作用 ) ,以选择性强的SK90 1 1为铜锌分离捕收剂 ,以硫酸锌和亚硫酸钠合理配比作为闪锌矿的主要抑制剂 ,采用部分优先—混合浮选工艺流程 ,成功解决了该矿石的铜锌分离问题。     

硫酸锌在多金属硫化矿分选中的应用

<正> 硫酸锌与亚硫酸钠、碳酸钠、硫化钠、二氧化硫或石灰等配合抑制闪锌矿,是锌矿物与其它金属矿物分离浮选常用的药方。红透山铜矿选矿厂采用铜硫混合浮选流程,处理铜锌硫多金属硫化矿石。自1963年回收锌以来,由于铜硫混合浮选循环未加抑制剂抑锌,造成锌在铜硫混合精矿中的大量损失,其损失率高达36.26％,约占锌总损失率的2/3。     

江西某伴生银难选铅锌矿浮选分离

针对江西某伴生银的复杂铅锌矿分离困难的特点,分析了原矿矿物组成、有价组分种类、矿石结构构造及赋存状态,并在此基础上制订了选矿试验原则流程,进行了铅锌选矿试验研究。以丁基铵黑药和乙硫氮为捕收剂,石灰和碳酸钠为黄铁矿和磁黄铁矿抑制剂,硫酸锌与亚硫酸钠为锌矿物组合抑制剂优先浮选铅矿物;铅浮选尾矿经石灰调浆、硫酸铜活化后,以丁基黄药为捕收剂进行锌浮选。实验室小型闭路试验获得了铅精矿铅品位50.21%、铅回收率88.78%,锌精矿锌品位46.82%、锌回收率74.30%,铅精矿中银回收率为68.60%的选矿指标。     

云南某铜锌硫化矿浮选试验研究

铜锌硫多金属矿石分离一直是选矿界的难题。文中在对某铜锌硫化矿石进行选矿研究时，采用快速优先浮选流程，以硫酸锌和亚硫酸钠合理配比作为闪锌矿的抑制剂，应用选择性好的捕收剂Z-200，实现了铜、锌矿物的分选。     

矿物浮选分离硫化铜、硫化锌的研究进展

随着我国对金属铜、锌资源需求的不断增加,有效的处理铜、锌矿石及对两者的高效利用对我国的经济建设有着极大的意义。硫化铜矿以黄铜矿为主,通常与硫化锌矿中的闪锌矿伴生,因此对两者进行分离是选矿研究中的一个热点。由于磨矿过程中黄铜矿溶解出的铜离子会对闪锌矿造成明显的活化效果,使得两者可浮性相近,这是导致铜、锌矿物分离困难的主要原因。对于铜锌硫化矿浮选分离当前的研究热点主要为抑锌浮铜,但在闪锌矿抑制剂研究方面深度不够,必须进一步研究不同抑制剂的抑制机理,从而更加清楚地调控矿浆环境及合理改变矿物的表面性质,以此增强抑制剂对闪锌矿的选择性。而发展新型氧化型药剂、外界物理化学方法改性以及研究抑铜浮锌的新方法是今后铜锌浮选分离的研究方向。     

非氰浮选工艺的生产实践

<正> 八一铜矿选矿厂处理的矿石为多金属硫化矿石。有用成分主要有铜、锌、硫、钡等。原设计的浮选流程为全浮选流程,以氰化物等作几种矿物分离的抑制剂。为了消除污染、提高生产指标,1974年采用亚硫酸钠、硫化钠的非氰工艺进行工业生产,同时将原流程改为铜硫部分混合浮选流程。1979年又成功地取消了亚硫酸钠,从而仅以石灰、硫化钠、硫酸锌有效地分离     

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。