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《中国钨业》2020,(1):29-35
某难选高硫含铜白钨矿中钨主要以白钨矿的形式存在,硫化铁主要以磁黄铁矿的形式存在。为给该矿石的开发利用提供技术支持,采用磁选-铜硫混合浮选-白钨浮选原则流程进行条件试验。结果表明,原矿磨矿至-74μm占65%时进行磁选,可获得品位为38.33%、回收率为51.14%的硫精矿,而磁选尾矿经铜硫混合-铜硫分离浮选,可分别获得品位为20.06%、回收率为73.12%的铜精矿和品位为35.20%、回收率为42.11%的硫精矿;其中铜硫混合浮选尾矿以碳酸钠为调整剂、水玻璃为抑制剂、731氧化石蜡皂为捕收剂,进行一粗一扫三精白钨常温浮选,可得到WO_3品位为63.93%、回收率为89.60%的白钨精矿,有效地实现了铜硫的分离和白钨矿的回收。 相似文献
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钨浮选过程中使用的捕收剂、抑制剂组合,导致选矿废水中细粒物质难以自然沉降,且有机物含量超标,严重影响尾水回用。对含铜硫钨矿物依次经浮选后形成的溢流水,采用石灰调节pH值,聚丙烯酰胺和粉煤灰絮凝沉降,能去除水中的有机污染物、降低重金属离子浓度,实现尾水回用并进行循环试验。结果表明,回水循环30天后,上清液中COD含量和Cu、Pb离子浓度没有显著的累积效应;与原水开路试验对比,铜粗精矿中铜品位仅细微波动,但产率降低了2.15个百分点,回收率降低了1.67个百分点;钨粗精矿中钨品位降低了0.4个百分点,而产率和回收率分别提升了0.32和1.02个百分点。回水闭路浮铜试验以原矿作为原材料,能获得产率为1.92%、品位为19.12%、回收率为85.22%的铜精矿;回水闭路浮钨试验以钨浮选给矿为原材料,能获得产率为9.38%、品位为3.88%、回收率为95.71%的钨粗精矿。 相似文献
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依据湖南某多金属矿矿石性质特点,采用预先浮硫化矿,浮硫尾矿常温浮白钨矿,白钨浮选粗精矿经酸浸脱磷产出合格的白钨精矿;白钨浮选尾矿经螺旋溜槽粗选富集,刻槽摇床精选产出锡精矿的工艺流程。对含WO30.617%、Sn0.043%的原矿,获得了钨(WO3)品位65.65%、回收率为85.09%的白钨精矿,锡品位28.20%,回收率为25.95%的锡精矿,白钨和锡石均得到有效回收。 相似文献
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水平铜矿属以铜、硫为主,并伴生有钨、银及其它元素的多金属矿床。1984年10月建成了日处理原矿一万t的大型浮选厂,尾矿日排出量约7000t。为保护、开发利用此多金属矿产资源,提高综合回收利用率和企业经济效益。受水平铜矿委托,遵照中国有色金属工业总公司指令,赣州有色冶金研究所于1986年5月至1987年6月进行并完成了小型试验,获得了较好的试验指标:原矿(铜硫浮选尾矿)含WO_3为0.06%,S为1.15%,矿砂部分钨、疏精矿产率分别为0.0159%和0.7106%,品位分别为69.61%WO_3和45.80%S,回收率分别为18.18%和34.77%。为进一步验证小型试验工艺流程、试验指标的可靠性和较准确的经济效益,赣州有色冶金研究所与永平铜 相似文献
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Abstract The physical variables that influence the rate of flotation are examined. The probabilistic model of flotation is used to establish the effect of the particle si2e and density, bubble size and agitation on the rate of flotation In quiescent flotation, it appears that the flotation rate is limited by the particle-bubble collision and subsequent attachment of the particle to the bubble. For fine (<20 μm) or low density particles the remedy for low recovery rates would be to either use small bubbles of the order of 100 μm, or to use moderate to high agitation with larger bubbles In the usual turbulent conditions, the limit is set by the destruction of the bubble-particle aggregates. Broadly speaking, the same parameters favour both attachment and detachment so that the ultimate flotation rate is a compromise between these two competing mechanisms The bounds which define the best agitation level and bubble size to use are strong functions of the particle size and density. This results in conflicting requirements for the optimum flotation of the fine and the coarse particles. Best conditions for the flotation of each are indicated. 相似文献
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介绍了加拿大CPT浮选柱的工作原理及Slam JetR气体分散系统;在锌浸出银浮选进行了浮选柱的小型条件试验基础上,某公司引进了1台CPT浮选柱与现有浮选机工艺相结合,进行了浮选柱银浮选回收率的试验。 相似文献
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浮选柱法从浮选尾矿中回收微细粒级白钨矿的研究 总被引:6,自引:1,他引:5
为提高钨资源利用效率,针对湖南安化湘安钨业公司白钨浮选尾矿中微细粒级在浮选机中未能有效分选的特点,利用微泡技术开发了CMPT微泡浮选柱,利用专家系统控制浮选柱关键参数,确保浮选柱处于较好的工作状态.半工业试验和工业试验表明,微泡浮选柱能从浮选尾矿中回收微细粒级白钨.通过半工业试验获得了浮选柱的较优的工作参数,工业试验表明其平均精矿质量和回收率分别为:24.52%和43.41%,富集比35.03.水析试验表明5~10 μm,lO~19μm,19~38 μm3个粒级的回收率均达到65%. 相似文献
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铜钼矿的浮选工艺和浮选药剂研究进展 总被引:1,自引:0,他引:1
就铜钼矿的几种浮选方法进行了综述,介绍了铜钼矿浮选捕收剂及抑制剂的研究进展,指出研究开发新型高效捕收剂及铜钼分离抑制剂是综合回收铜钼矿资源的关键。 相似文献
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喷射式浮选机是粉煤浮选除矸的机械设备,该设备处理能力大,单位能耗低,基建投资小,结构简单,辅助材料消耗较其它类型的浮选设备低,操作和维修方便。本文就该设备应用于从铅锌矿浮选尾矿中回收难选含锌硫化矿的生产实践和使用情况进行了简单阐述。 相似文献
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J. S. LASKOWSKI 《Mineral Processing and Extractive Metallurgy Review》2013,34(1-4):25-41
Abstract Flotation thermodynamics and notation kinetics are discussed and compared with chemical thermodynamics and chemical kinetics. While chemical thermodynamics can predict whether a reaction will take place under a given set of conditions (temperature and pressure), and can also predict the direction in which the equilibrium will be shifted in response to variation in these parameters, flotation thermodynamics can predict how likely it is for the mineral particle and gas bubble to attach in a moment of their collision. While thermodynamics can predict the probability of particle-to-bubble attachment, it cannot predict the rate of this process, for the energy barrier, Gattach, opposing particle-to-bubble attachment, is not interrelated with the free energy change accompanying the attachment The thermodynamic (Δ G < 0) and kinetic (τi; < τc c) flotation criteria are examined by a study of the effect of frothers on flotation. Various hypotheses that explain how the frother can affect flotation rate are discussed with emphasis on unsolved problems. 相似文献
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R. A. HAYES D. M. PRICE J. RALSTON R. W. SMITH 《Mineral Processing and Extractive Metallurgy Review》2013,34(3):203-234
Collectorless flotation is reviewed from the viewpoint of classical oxidation studies through to modern electrochemical, surface chemical and spectroscopic investigations coupled with flotation studies. Sulphide minerals apparently oxidize through a continuum of metal deficient sulphides of decreasing metal content through to elemental sulphur. The exact surface species responsible for surface hydrophobicity is still open to debate. The major challenge for future research will be to separate sulphide minerals from one another by Eh control and, in doing so, to understand the inevitable mineral interactions which should occur. 相似文献
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Bragin V. I. Burdakova E. A. Usmanova N. F. Kinyakin A. I. 《Russian Journal of Non-Ferrous Metals》2021,62(6):629-636
Russian Journal of Non-Ferrous Metals - This paper proposes a method for quickly estimating the average flotation capacity of minerals according to the kinetic experiment without finding the... 相似文献