新型选铜捕收剂在铜锌硫化矿浮选中的应用

为了解决铜锌硫化矿浮选分离难题,研发了一种新型选铜捕收剂BL。为了考察其捕收铜的性能,以广西大厂铜锌矿物为浮选对象,进行了系列条件试验。试验结果表明:在磨矿细度-0.074mm占85%,矿浆pH=9.5,BL用量60g/t,亚硫酸钠+硫酸锌用量1000+1000g/t,2#油用量40g/t的条件下,浮选试验可得到品位18.51%、回收率82.07%的铜精矿,铜精矿中锌品位9.92%、回收率1.03%,取得了较好的分离浮选指标。     

某铜银矿浮选试验研究

某铜银矿矿石中有用组分铜含量低,伴生贵金属银含量较高,矿石成分较复杂,金属分布不均匀,含泥较高,氧化铜嵌布粒度较细,属难选氧化铜矿。试验研究了不同磨矿细度、药剂用量和工艺流程条件下的分选效果,结果表明:硫化矿、氧化矿混合浮选铜银矿药剂简单而且指标良好;当原矿磨矿细度达到-0.075mm占90.77%时,相对入选原矿量,在调整剂水玻璃用量500g/t、石灰用量500g/t、硫化剂硫化钠用量300g/t、捕收剂Y89黄药用量100g/t、戊基黄药用量100g/t、丁铵黑药用量80g/t、Z-200用量20g/t的条件下,采用"硫氧混浮一粗三扫三精"浮选流程,闭路试验得到的铜精矿品位为26.89%,铜回收率为89.39%;银精矿品位为2 320.30g/t,银回收率为88.35%。     

云南某铜镍硫化矿浮选试验研究

云南某铜镍硫化矿主要金属矿物有黄铜矿、辉铜矿、镍黄铁矿、含镍磁黄铁矿,脉石矿物主要有蛇纹石、石英。原矿含铜0.88%,含镍0.57%,该矿石属于典型的低品位铜镍硫化矿。为更好地对铜镍矿物充分回收利用,对试样进行试验研究。结果表明,试样在磨矿细度为-74μm占70%,Na_2CO_3用量1 000 g/t,CuSO_4用量200 g/t,六偏磷酸钠用量300 g/t,捕收剂用量150 g/t、松醇油用量40 g/t的条件下,采用两次粗选、两次精选、二次扫选、中矿循序返回流程处理。最终获得回收率为84.39%、品位为4.87%的铜精矿,回收率为78.83%、品位为3.05 g/t的镍精矿。     

黑龙江某铜矿浮选可选性试验

以黑龙江某低品位氧化铜矿为研究对象,经过矿石性质分析,进行了浮选条件试验,在浮选浓度为30%,磨矿细度为-0.074 mm 68.72%,捕收剂用量为80 g/t,硫化钠用量为150 g/t,石灰用量为2 000 g/t,起泡剂用量为80 g/t的条件下,通过1段粗选、2段精选、2段扫选,获得了铜品位为13.70%,铜回收率为88.95%的铜精矿。     

广西某银矿选矿工艺试验

广西某难选低品位铜铅锌银多金属硫化矿为了实现银的高效回收,通过矿石性质研究,采用硫酸铜作为活化剂,用量为100 g/t,丁黄药+丁铵黑药组合作为捕收剂,用量为(80+80)g/t,通过1粗2精2扫全硫浮选闭路试验流程,获得了银品位为8 067.63 g/t、银回收率为93.26%的银精矿,试验指标良好。     

强化红透山铜矿中伴生金银回收效果的选铜试验

在确保铜锌高效回收的前提下,通过试验确定了红透山含金银复杂铜锌硫化矿强化金银回收的合适磨矿细度、捕收剂种类及用量。用优化后的工艺技术条件和现场的1粗2扫3精选铜、中矿顺序返回流程处理该矿石,可获得铜品位为22.22%、回收率为92.21%的铜精矿,铜精矿中金、银的品位分别为5.51 g/t和295.00 g/t,回收率分别为58.07%和60.51%。     

云南某低品位铜矿选矿试验

为合理回收含铜为0.33%的云南某低品位铜矿,在矿石性质研究的基础上,进行了选矿工艺试验研究。试验结果表明:在磨矿细度为-0.074 mm 85%、组合捕收剂丁基黄药和Z-200(质量比1∶1)用量为80 g/t、2~#油用量为30 g/t、精选石灰用量为300 g/t的最优条件下,通过铜硫混浮—粗精矿再磨浮选工艺流程,最终获得了精矿铜品位为16.48%,铜回收率为82.42%的较好指标。     

某硫化铜金矿选矿试验研究

某硫化铜金矿原矿Cu和Au品位分别为3.27%和2.35 g/t, 针对铜的赋存状态及粒度嵌布特点, 进行了浮选工艺研究。确定了最佳试验条件为: 磨矿粒度为-0.074 mm粒级占70%, pH=8.5, 采用BY-309与B-5050组合作捕收剂, 用量分别为110 g/t和55 g/t, 一粗三精三扫闭路试验获得了含Cu 18.87%、Au 13.587 g/t的铜金混合精矿, 铜、金回收率分别达到了92.70%与89.53%, 实现了硫化铜金矿综合高效回收。     

响应曲面法优化青藏高原某铜矿浮选工艺研究

针对青藏高原某铜矿现场药剂制度的缺陷，在单因素试验的基础上，建立响应曲面数学模型，寻求新 型捕收剂 XK-103 在该矿应用的最佳条件及与其他因素对指标的交互影响。矿浆 pH 值、调整剂硫化钠用量和捕收 剂 XK-103 用量对该铜矿浮选指标有显著影响，经单因素条件试验，初步确定矿浆 pH 值为 9，硫化钠用量为 250 g/t， XK-103 用量为 28 g/t 时，铜浮选指标最佳。用 Design-Expert 8.0.6 软件进行响应曲面分析优化和方差分析计算，以 矿浆 pH 值、XK-103 用量和硫化钠用量为自变量，铜粗精矿的回收率和品位为响应值建立数学模型，获得的最佳浮 选条件为 pH=9.11，XK-103 用量 27.64 g/t，硫化钠用量 234.04 g/t，在此条件下，铜粗精矿的铜回收率计算响应结果为 94.67%，铜品位响应结果为 17.10%。根据响应曲面结果，选取 pH 值为 9，硫化钠用量为 235 g/t，XK-103 用量为 27.60 g/t 进行闭路试验验证，结果表明，在原矿铜品位为 1.28% 的条件下，经 1 粗 1 精 2 扫的闭路流程试验获得了铜 品位为 29.53%，铜回收率为 95.21% 的铜精矿。     

云南某含金铜矿石自然pH下浮选试验研究

云南某含金铜矿石铜品位1.06%、金品位0.38 g/t、硫品位3.56%。为在回收铜的同时可以综合回收金等贵金属,在自然pH条件下进行浮选试验。结果显示:新型环保抑制剂D82在有效抑制黄铁矿的同时,还可以提高金的回收指标;在磨矿细度为-0.074 mm占75.5%条件下,以D82为抑制剂、Z-200为捕收剂,经1粗2精2扫铜浮选,浮铜尾矿以硫酸铜为活化剂、丁基黄药为捕收剂,经1粗1精1扫选硫,闭路试验得到的铜精矿铜品位46.83%、金品位14.22 g/t、铜回收率93.22%、金回收率78.96%,硫精矿硫品位58.69%、回收率75.18%。以D82为抑制剂可以在自然pH条件下实现抑硫浮铜,对伴生贵金属的硫化矿浮选具有借鉴价值。     

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