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molybdenum recovery    
相关语句
  钼回收率
    Molybdenum recovery raised 3.43%,and the total mineral processing efficiency raised 1.77% in close circuit test.
    闭路试验时 ,钼回收率提高了 3 .4 3 % ,总的选矿效率提高了 1.77%。
短句来源
    Baihualing molybdenum ore dressing plant under the leadership of Jinduicheng Molybdenum Ore Company is the biggest one among plants of the same kind in China as well as in Asia. Technical improvements in recent years in the ways of equipment renewal and optimization of technological parameters have increased the molybdenum recovery by 2 26%,the concentrate grade from 50 75% to 52 45%(maximum 54%)which means a world level quality.
    通过对钼精选系统工艺实施设备换型和优化工艺参数等方面的技术改造 ,提高钼回收率2 2 6个百分点 ,钼精矿品位由 5 0 75 %平均提高到 5 2 45 % (最高Mo≥ 5 4% )。
短句来源
  钼回收率
    Molybdenum recovery raised 3.43%,and the total mineral processing efficiency raised 1.77% in close circuit test.
    闭路试验时 ,钼回收率提高了 3 .4 3 % ,总的选矿效率提高了 1.77%。
短句来源
    Baihualing molybdenum ore dressing plant under the leadership of Jinduicheng Molybdenum Ore Company is the biggest one among plants of the same kind in China as well as in Asia. Technical improvements in recent years in the ways of equipment renewal and optimization of technological parameters have increased the molybdenum recovery by 2 26%,the concentrate grade from 50 75% to 52 45%(maximum 54%)which means a world level quality.
    通过对钼精选系统工艺实施设备换型和优化工艺参数等方面的技术改造 ,提高钼回收率2 2 6个百分点 ,钼精矿品位由 5 0 75 %平均提高到 5 2 45 % (最高Mo≥ 5 4% )。
短句来源
  钼回收率
    Molybdenum recovery raised 3.43%,and the total mineral processing efficiency raised 1.77% in close circuit test.
    闭路试验时 ,钼回收率提高了 3 .4 3 % ,总的选矿效率提高了 1.77%。
短句来源
    Baihualing molybdenum ore dressing plant under the leadership of Jinduicheng Molybdenum Ore Company is the biggest one among plants of the same kind in China as well as in Asia. Technical improvements in recent years in the ways of equipment renewal and optimization of technological parameters have increased the molybdenum recovery by 2 26%,the concentrate grade from 50 75% to 52 45%(maximum 54%)which means a world level quality.
    通过对钼精选系统工艺实施设备换型和优化工艺参数等方面的技术改造 ,提高钼回收率2 2 6个百分点 ,钼精矿品位由 5 0 75 %平均提高到 5 2 45 % (最高Mo≥ 5 4% )。
短句来源
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  molybdenum recovery
The feasibility of reductive precipitation of molybdenum oxides for molybdenum recovery from hypochlorite leach solutions has been investigated.
      
Molybdenum recovery above 99 pct at a chlorine utilization efficiency of 84 pct has been achieved for a fluidizing gas flow-rate of 3 L/min of the gases Cl2, O2, and N2 mixed in the proportion of 2∶5∶23, respectively, at 300 °C.
      
The feasibility of reductive precipitation of molybdenum oxides for molybdenum recovery from hypochlorite leach solutions has been investigated.
      
Neutron activation analysis was used to determine (1) the efficiency of molybdenum recovery and (2) the decontamination factor of numerous fission product elements from the molybdenum product.
      


China is known for its richness in metallic ore resources with almost all varie-ties,having a long history of mining activities.Throughput has been constantly incre-asing,while technology improving.Despite of the raw ore grade decreasing,recoveries of main metals have beenraising and kinds as well as the output of by-products expanding.The present paperdescribes the progress in grinding,classification and in the beneficiation of tungsten,tin,complex sulphides,copper,molybdenum,nickel,precious metals...

China is known for its richness in metallic ore resources with almost all varie-ties,having a long history of mining activities.Throughput has been constantly incre-asing,while technology improving.Despite of the raw ore grade decreasing,recoveries of main metals have beenraising and kinds as well as the output of by-products expanding.The present paperdescribes the progress in grinding,classification and in the beneficiation of tungsten,tin,complex sulphides,copper,molybdenum,nickel,precious metals and iron ores.GRINDING AND CLASSIFICATION Autogenous and semi-autogenous mills havebeen increasingly used,especially in iron concentrators.In some plants,magneticpulleies are used to discard wastes from autogenous mill discharges.Comparing withball mills,the consumption of grinding media has been reduced by 40% in plant usingrod-pebble mills.The fine screening with rappers has been widely adopted in magnetiteplants for upgrading concentrates.In some plants,hydrocyclones have been replacedby F.S.R.unites as classifiers.TUNGSTEN AND TIN Although multistage grinding and gravity separation aremainly applied to the beneficiation of such ores,combined flowsheets of gravity,magnetic separstion and flotation are also used.In the treatment of ore slimes,gravitymethod with centifugal separators for roughing followed by vanners for cleaning issuccessfully adopted;flotation and combined processes of gravity separation and flota-tion have been increasingly used;rock-shaking vanners are also introduced.Progress,in the concentration of tungsten ore slime,has been made by way of high intensitymagnetic separation followed by flotation.The methods of cleaning rougher concentra-tes comprise gravity,magnetic,electrostatic separation,table flotation and flotation aswell as combined processes of beneficiation and metallurgy.Some concentrators treatingrefractory cassiterite ores produce,in addition to final tin concentrates,low gradesemi-products for further treatment with special metallurgical processes.COMPLEX SULPHIDES In respect of the methods of separation,many a cyanide-free and dichromate-free separation methods have been developed,resulting in impro-vements of separation efficiency;reduction of environmental pollution and increasingrecovery of precious metals;and solution of the problems associated with separationof some complex sulphide ores,containing a large amount of secondary copper mine-rals.In addition,the electroflotation technique has been introduced in a lead-zincconcentrator,resulting in saving regulators and depressors.As concerns the flotationflowsheet,“equi-flotability” has been widely used. COPPER A number of effective flotation reagents have been utilized.Flotationcolumns have been used for more than 20 years,and a new type annular-ejectingflotation machine has also been put into operation.With respect to the recovery ofrefractory oxidized ores,both the single stage segregation with direct heatingand the leaching-extraction-electrowinning processes are in operation.Some othermethods have also been investigated with better results,such as,pressure ammoniacalleaching,pressure ammoniacal leaching with sulphur precipitation-flotation,pressuresulphidization-flotation and leaching-precipitation-carrier flotation.MOLYBDENUM,NICKEL AND PRECIOUS METALS The flotation flowsheet ofmolybdenite trends towards open circuit,i.e.discarding final tailings in cleaningstages.Furthermore,some concentrators also produce middlings for further treatmentwith hydrometallurgy.Heavier wax and combined collectors are adopted in someconcentrators,improving molybdenum recoveries.In a certain plant dealing with difficult nickel ores,flotation-desliming-magneticseparation-flotation flowsheet has been used instead of single flotation.Recoveringcobalt alloy from converter slags and separating richer precious metal alloy fromnickel matt with ore dressing methods have been put into practice.Extracting gold with thiourea has been investigated in commercial scale test withbetter results achieved.Recovering precious metals from anode slime and leachingresidues

我国金属矿资源丰富,矿种齐全,开采量与日俱增,生产技术不断改进。本文概述了磨矿、分级;钨锡矿的预选、重选、矿泥处理、精选;铜铅锌多金属硫化矿的分选方法、流程;铜矿的工艺、药剂、浮选设备,选冶联合流程;钼、镍、金银和贫赤铁矿选矿等方面的进展

In view of one refractory molybdenum ore in Shanxi Province,a circuit of one rough flotation and two scavenger are adopted,takes kerosene as collector,and add little amount(about 10g/t)polarity in rough flotation as the auxiliary collector,then the molybdenum recovery increased largely.In comparison with kerosene,the ammonium butyl aerofloat is more effective. The recovery in rough flotation and total recovery raised 4.23% and 4.71% in open circuit test .Molybdenum recovery...

In view of one refractory molybdenum ore in Shanxi Province,a circuit of one rough flotation and two scavenger are adopted,takes kerosene as collector,and add little amount(about 10g/t)polarity in rough flotation as the auxiliary collector,then the molybdenum recovery increased largely.In comparison with kerosene,the ammonium butyl aerofloat is more effective. The recovery in rough flotation and total recovery raised 4.23% and 4.71% in open circuit test .Molybdenum recovery raised 3.43%,and the total mineral processing efficiency raised 1.77% in close circuit test.

针对陕西某难选钼矿 ,采用一粗二扫流程 ,用煤油作捕收剂 ,在粗选作业中添加少量 (约 10g/t)极性硫代化合物作辅助捕收剂 ,较大幅度地提高了钼浮选回收率 ,其中以丁铵黑药的效果最为显著 ,与只用煤油作捕收剂相比 ,开路试验时 ,钼粗选回收率和总回收率分别提高了4 .2 3 %和 4 .71% ;闭路试验时 ,钼回收率提高了 3 .4 3 % ,总的选矿效率提高了 1.77%。

Baihualing molybdenum ore dressing plant under the leadership of Jinduicheng Molybdenum Ore Company is the biggest one among plants of the same kind in China as well as in Asia.Technical improvements in recent years in the ways of equipment renewal and optimization of technological parameters have increased the molybdenum recovery by 2 26%,the concentrate grade from 50 75% to 52 45%(maximum 54%)which means a world level quality.The practice of technical improuement in Baihualing plant can be taken...

Baihualing molybdenum ore dressing plant under the leadership of Jinduicheng Molybdenum Ore Company is the biggest one among plants of the same kind in China as well as in Asia.Technical improvements in recent years in the ways of equipment renewal and optimization of technological parameters have increased the molybdenum recovery by 2 26%,the concentrate grade from 50 75% to 52 45%(maximum 54%)which means a world level quality.The practice of technical improuement in Baihualing plant can be taken as a good example for similar plants.

通过对钼精选系统工艺实施设备换型和优化工艺参数等方面的技术改造 ,提高钼回收率2 2 6个百分点 ,钼精矿品位由 5 0 75 %平均提高到 5 2 45 % (最高Mo≥ 5 4% )。改变了产品结构 ,适应市场需求 ,使得“JDC”钼产品质量优势进一步巩固与加强 ,继续保持国内领先水平 ,并跨入国际先进行列 ,经济效益巨大 ,社会效益显著 ,为同类矿山设备更新、选型和工艺改造提供了借鉴。

 
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