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molybdenum
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    The Comparative Study on the Content and Metallogenic Signifance of Gold, Molybdenum, Tungsten and Tin in Mantle Rocks from Eastem China
    中国东部地幔岩中的金、、钨、锡含量及其与成矿关系比较研究
短句来源
    Search for low molecular depressants separating copper molybdenum bulk concentrate
    寻找低分子有机抑制剂分离铜混合精矿
短句来源
    DESIGN AND TEST OF FLOTATION AND SEPARATION FLOWSHEETS FOR MOLYBDENUM,BISMUTH AND IRON SULPHIDES
    铋铁硫化矿浮选分离流程的设计和试验
短句来源
    Re-Os ISOTOPE AGES OF MOLYBDENUM DEPOSITS IN EAST QINLING AND THEIR SIGNIFICANCE
    东秦岭地区矿床的铼-锇同位素年龄及其意义
短句来源
    THE DISTRIBUTION AND EXPLOITATION OF MOLYBDENUM RESOURCE ABROAD
    国外矿资源的分布与开发
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  “molybdenum”译为未确定词的双语例句
    PRACTICE AND ANALYSIS ON AUTOMATIC PROCESS OF DRESSING AND DETECTABLE TECHNOLOGY IN MOLYBDENUM MING CROP.
    金堆城选矿自动化检测技术生产实践与分析
短句来源
    Production Practice on Improving Enrichment of Associated Element Molybdenum in Copper Concentrate
    提高伴生元素钼在铜精矿中富集的生产实践
    The molar absorptivity is 1. 0×104L·mo1-1· cm-1.This method is simple, fast, accurate to determining Ti in molybdenum tailings with satisfactoryresults.
    摩尔吸光系数ε420=1.0×104。 方法简便、快速、准确,选择性好,用于选相尾矿中钛的测定,结果满意。
短句来源
    The molybdenum concentrate can be homogenized 10 t/h with this mixer. The difference of Mo grade between the bags has been decreased from 3. 9% to 0. 89% after homogenization, and the product rising is stiIl privented.
    该机1h可混匀银精矿10t,产品袋间银品位极差,由匀前3.9%降至0.89%,且防止产品飞扬。
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    The bismuth concentrate containing 14.80%Bi with a recovery of 86.70% and the molybdenum concentrate containing 46.33%Mo with a recovery of 67.12% are obtained from the tailings bearing 0.029%Bi and 0.018%Mo by a process of "ramified and series bulk flotation then separation by flotation".
    某钨尾矿含0.029%Bi、0.018%Mo,采用先分支串流混合浮选再分离浮选,获得了铋精矿品位14.80%、回收率86.70%;
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  molybdenum
The effect of ultrasound irradiation on molybdenum trioxide has been investigated.
      
The physicochemical changes of MoO3 due to ultrasound irradiation have been attributed to the sonochemical cavity collapse onto the molybdenum trioxide particles.
      
Molybdenum isotope composition from Yangtze block continental margin and its indication to organic burial rate
      
Molybdenum, at a concentration lower than half the concentration of tungsten, as well as iron, selenium, and pterin at concentrations 2.5 times higher than that of tungsten, had no effect on tungsten determination by this method.
      
During the formation and ripening of beans in yellow lupine, their intactness may be increased by treatment of the plants with the microelement molybdenum or the growth factor 24-epibrassinolide.
      
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Shizhuyuan ore occurrence,Hunan Province,is the extra big complex deposit in China,containing WO_3,Mo,Bi and Sn minerals and fluorite.Technological process for treating ores from the deposit were studied by the Hunan Metallurgical Research Institute in cooperation with Beijing Mining and Metallurgical Research Institute, Research Institute of Mining and Metallurgy,Changsha,and Shizhuyuan Polymetal Mine.Commercial-scale experiments on its greisen-skarns ore have been run for 5 years.The flowsheet tested consisted...

Shizhuyuan ore occurrence,Hunan Province,is the extra big complex deposit in China,containing WO_3,Mo,Bi and Sn minerals and fluorite.Technological process for treating ores from the deposit were studied by the Hunan Metallurgical Research Institute in cooperation with Beijing Mining and Metallurgical Research Institute, Research Institute of Mining and Metallurgy,Changsha,and Shizhuyuan Polymetal Mine.Commercial-scale experiments on its greisen-skarns ore have been run for 5 years.The flowsheet tested consisted of coarse grinding foUowed by gravitation for recovering most of coarse tungsten minerals;bulk flotation of wolframite and scheelite; separate cleaning of gravity and flotation rough concentrates;bulk-selective flotation for recovering Mo,Bi minerals, and finally,flotation of fluorite. The above flowsheet provided satisfactory results, recovering 81.69% WO_3,83.55% Mo,68.29% Bi,and 28.76% CaF_2 in corresponding concentrates,i.e.scheelite, wolframite,molybdenum,bismuth and fluorite concentrates,grading 67.52% WO_3, 66.29% WO_3,46.72% Mo,29.17% Bi and 97.31% CaF_2 respectively.

我国湖南省柿竹园矿床是特大型钨、钼、铋、萤石、锡多金属矿床。冶金部矿冶研究总院、冶金部矿冶研究所、柿竹园多金属矿等单位与湖南冶金研究所合作,对该矿区矿石选矿工艺进行了研究;并对其云英—矽卡岩型矿石进行了为时五年工业试验.试验流程是:粗磨—重选回收部分粗粒钨矿物;混合浮选黑白钨;重选和浮选粗精矿分别精选;混合—优先浮选流程回收钼铋矿物;浮选法回收萤石。上述流程获得较好的指标。WO_3、Mo、Bi、CaF_2回收率分别为81.69%、83.55%、68.29%、28.76%。白钨精矿、黑钨精矿、钼精矿、铋精矿和萤石精矿品位分别达到67.52%、66.29%、46.72%、29.17%、97.31%。

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...

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

Using a continuous flotation model developed by the authors and the flotation rate constants, Km, as well as changing rate constants of rate constant, g, measured from Brenda concentrator B. C. Canada, an optimum option of cell arrangement in six operations of copper and molybdenum rougher was obtained.The optimisation showed that there were about 8 cells totally could be saved by the rearrangement of cells with increasing the recoveries 6% and 3% for Cu and Mo respectively.It could be pointed out that...

Using a continuous flotation model developed by the authors and the flotation rate constants, Km, as well as changing rate constants of rate constant, g, measured from Brenda concentrator B. C. Canada, an optimum option of cell arrangement in six operations of copper and molybdenum rougher was obtained.The optimisation showed that there were about 8 cells totally could be saved by the rearrangement of cells with increasing the recoveries 6% and 3% for Cu and Mo respectively.It could be pointed out that with this simulation method after some improvements, a realizable optimum option of flowsheet designing and cell arrangment improving would be possible in the near future.

作者们利用已有的连续浮选模型和在加拿大布兰达(Brenda)选矿厂测到的浮选速度常数K_m和平均K值的变化速度常数g,对该厂铜钼混合粗选的六个作业的浮选槽数的安排,作了最佳选择。选择结果可以节省浮选槽总数8台、并相应地提高铜和钼的回收率分别为6%和3%。文章指出在经过稍许改进后,这种最佳化选择将可被用于选矿厂流程选择和选厂改进。

 
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