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1.
针对云南某低品位银铅锌矿选矿回收率较低的现状,以现场生产原矿作为试验给矿,在原矿工艺矿物学的基础上开展了试验研究。通过优化磨矿细度,控制石灰用量,采用乙硫氮、丁基铵黑药、25#黑药组合捕收剂代替单一捕收剂,硫酸锌、亚硫酸钠代替单一抑制剂,在原矿含铅0.79%,含锌1.51%,含银95.04g/t时,获得了含铅48.65%,铅回收率89.87%,含银4 012g/t,银回收率为61.60%的银铅精矿,含锌46.21%,锌回收率90.43%,含银891g/t,银回收率为27.70%的银锌精矿,铅、锌、银精矿品位和回收率较生产指标提高明显。试验成果取得了良好的工业应用。  相似文献   

2.
河南某富银铅锌矿选矿试验研究   总被引:1,自引:0,他引:1  
为了最大程度将银富集在铅精矿中,采用先选铅银后选锌的优先浮选工艺。着重进行了铅银混浮时粗选捕收剂、抑制剂种类试验。试验结果表明,乙硫氮和丁基铵黑药组合捕收剂与硫酸锌和亚硫酸钠组合抑制剂能获得较好的结果。闭路试验可以获得含铅68.14%、铅回收率94.21%、含银4407.55g/t、银回收率91.29%的铅精矿和含锌56.32%、锌回收率85.62%的锌精矿。  相似文献   

3.
某低品位铅锌硫化矿浮选试验研究   总被引:1,自引:1,他引:0  
某硫化铅锌矿含铅锌原矿品位低、嵌布粒度细、伴生关系复杂。通过多种方案的比较,采用优先浮选抑锌浮铅的选别流程,试验采用乙硫氮作为优先选铅的捕收剂,石灰作为调整剂以及黄铁矿的抑制剂,硫酸锌和亚硫酸钠作为闪锌矿的抑制剂,之后利用硫酸铜作为闪锌矿的活化剂,用丁基黄药作为捕收剂来实现铅与锌的有效分离。试验获得铅精矿含铅51.00%、铅回收率86.63%、含银518 g/t、银回收率47.41%,锌精矿含锌51.20%、锌回收率85.27%、含银234 g/t、银回收率38.38%。  相似文献   

4.
为高效开发利用东北某低品位含银铅锌矿,解决现场分选工艺中存在铅锌精矿铅锌互含较高,伴生金属银回收率较低,且废水难于直接回用的难题,在工艺矿物学研究基础上,开展了铅锌低碱浮选试验研究,通过铅锌浮选条件试验确定适宜的选矿工艺流程及药剂制度。结果表明:针对含铅1.33%、锌2.51%、银19.5 g/t的原矿,采用铅锌优先浮选流程,在磨矿细度为-0.074 mm占75.42%情况下,以碳酸钠为p H调整剂、硫酸锌和亚硫酸钠为抑制剂、苯胺黑药+丁铵黑药为捕收剂,经“1粗3精2扫”选铅,清水闭路试验,得到含铅57.52%、含锌4.84%、含银585.40 g/t、铅回收率85.38%、银回收率57.63%的铅精矿;选铅尾矿以硫酸铜为活化剂、石灰为抑制剂、苯胺黑药+丁胺黑药为捕收剂,经“1粗2精2扫”选锌,获得了含锌51.85%、含铅1.38%、含银52.20 g/t、锌回收率90.71%、银回收率11.65%的锌精矿。回水条件下铅锌指标与清水时各项指标相当。试验通过在铅锌浮选中采用苯胺黑药+丁铵黑药做铅锌矿物捕收剂,使常规抑制剂能够代替石灰或减少石灰用量,从而实现硫化铅锌矿的低碱度分选,并使矿石...  相似文献   

5.
胡真  汪泰  李汉文  王成行 《矿山机械》2012,(10):100-103
云南某富银铅锌多金属矿中的铅、锌主要以硫化矿形式存在,含银高达130g/t,主要赋存于方铅矿中。针对矿石性质,采用对铅、银具有高选择性的捕收剂和对闪锌矿具有良好抑制效果的组合调整剂,进行优先浮选铅、银,选铅尾矿浮锌的试验研究。研究结果表明,原矿含铅2.56%,含银130g/t,含锌1.08%,可获得铅精矿含铅71.13%、银3384.10g/t,铅回收率为88.45%,银回收率为87.25%;锌精矿含锌50.10%,锌回收率为83.80%的试验指标。  相似文献   

6.
某地低品位铜铅锌银矿绿色环保选矿试验研究   总被引:5,自引:2,他引:3  
朱一民 《矿冶工程》2011,31(1):24-26
对青海某地低品位铜铅锌银矿体进行了选矿试验研究。研究结果表明, 采用铜-铅-锌优先浮选方案和无毒(低毒)选矿药剂, 可从含铜0.16%、含铅2.60%、含锌3.84%、含银61 g/t的试样中获得含铜16.37%、铜回收率为49.07%、含银1 231 g/t、银回收率为9.67%的铜精矿, 含铅55.06%、铅回收率为86.81%、含银769 g/t、银回收率为51.69%的铅精矿和含锌46.80%、锌回收率为81.65%、含银206 g/t、银回收率为22.64%的锌精矿, 铜精矿、铅精矿和锌精矿中银的总回收率为84.00%。  相似文献   

7.
王祖旭 《金属矿山》2014,43(7):89-93
云南某高铅、高锌、高银氧化铅锌矿主要成分为异极矿和白铅矿,其含量分别为58.31%和22.79%,且银含量高达352.90 g/t。为了解决冶炼前的铅锌互含问题,以昆明冶金研究院研制的新型螯合捕收剂C6403为白铅矿浮选捕收剂,进行了异极矿和白铅矿的高效分离试验。结果表明,采用3粗2精、中矿顺序返回的闭路流程处理该矿石,获得的铅精矿铅品位为42.04%、含锌9.63%、含银668.15 g/t、铅回收率为83.22%、银回收率为66.23%,获得的锌精矿锌品位为43.51%、含铅4.56%、含银183.30 g/t、锌回收率为89.36%、银回收率为33.77%,铅精矿、锌精矿的质量均达到了冶炼要求。  相似文献   

8.
四川某硫化铅锌矿铅锌品位低,含硫较高,矿石中部分方铅矿、闪锌矿嵌布粒度较细,呈细脉状、浸染状嵌布,影响铅锌浮选分离指标。在现有的分选工艺流程下,铅精矿中含锌较高,影响锌回收率。为此,在工艺矿物学研究基础上,开展了铅浮选工艺优化试验研究。新工艺采用25#黑药作选铅捕收剂,铅粗精矿进行再磨,降低了铅精矿锌含量,提高了铅精矿铅品位和锌精矿锌回收率;小型闭路试验在原矿含铅1.21%、含锌2.19%、含银25.48 g/t的条件下,可获得含铅45.58%、含锌5.43%、含银861.72 g/t,铅回收率84.11%的铅精矿;含铅1.11%、含锌54.10%,锌回收率87.14%的锌精矿。铅精矿、锌精矿的品位分别较现场工艺提升2.42、3.72个百分点,铅、锌回收率分别提高0.26、4.11个百分点,研究结果为该铅锌矿的实际生产提供指导。  相似文献   

9.
根据云南某富银铅锌多金属硫化矿的矿石性质特点, 进行了铅锌优先浮选试验研究。结果表明, 在原矿含铅2.56%、含锌1.08%、含银130 g/t的情况下, 可获得铅精矿含铅71.13%、铅回收率为88.45%, 锌精矿含锌50.10%、锌回收率为83.80%的试验指标。与此同时, 银矿物在铅精矿中得到较好富集, 铅精矿含银3384.10 g/t、银回收率为87.25%。  相似文献   

10.
广东大尖山某铅锌多金属矿石铅品位为2.10%、锌品位为3.805%、银含量为35.85 g/t。矿石铅、锌均主要是以硫化矿的形式存在,硫化铅和硫化锌分别占总铅和总锌的95.71%和95.84%。为给该矿石开发利用提供依据,进行了选矿工艺试验。结果表明:矿石磨细至-74 μm占80%,以CaO为矿浆pH调整剂、硫酸锌为抑制剂、丁胺黑药+丁黄药为捕收剂,经1粗3精4扫铅浮选,铅浮选尾矿以CaO为矿浆pH调整剂、CuSO4为活化剂、丁黄药为捕收剂,经1粗3精4扫锌浮选,获得了铅精矿铅品位60.29%、铅回收率92.02%、含银826.13 g/t、银回收率72.75%、含锌3.64%,锌精矿锌品位48.32%、锌回收率92.30%、含铅0.95%的指标。  相似文献   

11.
<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  相似文献   

12.
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  相似文献   

13.
<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  相似文献   

14.
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  相似文献   

15.
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  相似文献   

16.
<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  相似文献   

17.
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  相似文献   

18.
19.
文奇 《中州煤炭》2018,(6):175-178
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。  相似文献   

20.
<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  相似文献   

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