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oxidized ores
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  氧化矿石
     The practice and development orientation of heap leaching technology for low grade of oxidized ores in Miaoling Gold Mine
     庙岭金矿低品位氧化矿石堆浸实践及发展方向
短句来源
     In addition, the oxidized ores are rich in Co and poor in Cu, Zn, Ag, and Pb, Pb-Zn sulfide ores exhibitmassive and impregnated structures.
     此外,氧化矿石还富Co,相对贫Cu、Zn、Ag和Pb。 下部为铅锌硫化物矿石,具块状或浸染状构造。
短句来源
     According to the proportion of Cu-bearing oxide and sulfide in copper ores,the copper ores can be classified as sulfide- ores in which the proportion of Cu-bearing oxides is less than 10%,mixed-ores which have Cu-bearing oxides is from 10% to 30%,and oxidized ores in which Cu-bearing oxide is more than 30%.
     铜矿石的自然类型一般按物相分析中含氧化矿和硫化矿的比例不同,分为硫化矿石(含氧化铜在10%以下)、混合矿石(含氧化铜10%~30%)和氧化矿石(含氧化铜在30%以上)3种。
短句来源
     The method of microbiological test, optic microscope and transmission electron microscope have been used to separate and appraise microorganisms from three ore samples (oxidized ore, semi-oxidized ore and originalore) of Mingshan Carlin-type gold deposit in northwestern Guangxi, in order to investigate the function of microorganisms during the formation of the oxidized ores of Carin-type gold deposits in northwestern Guangxi.
     为探讨微生物在桂西北卡林型金矿氧化矿体形成期间的作用,应用微生物学检验方法和光学显微镜、透射电镜等方法分离、鉴定了桂西北明山卡林型金矿表生带氧化矿石、半氧化矿石、原生矿石样品中的微生物。
短句来源
     A big majority of gold ores distributed in South-Western part of Guizhou Province are belong in primary ores of inclusion type in low grade with fine grained particles. Among them, a part of oxidized ores are suitable to be leached with cyanide for gold recovery,however the tailing grade is as high as 1.0g/t.
     黔西南分布的金矿,大多属低品位、微细粒、包裹型原生矿,部分氧化矿石适宜氰化堆淋提金,但尾矿品位较高,达1.0g/t以上.
短句来源
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  氧化矿体
     The method of microbiological test, optic microscope and transmission electron microscope have been used to separate and appraise microorganisms from three ore samples (oxidized ore, semi-oxidized ore and originalore) of Mingshan Carlin-type gold deposit in northwestern Guangxi, in order to investigate the function of microorganisms during the formation of the oxidized ores of Carin-type gold deposits in northwestern Guangxi.
     为探讨微生物在桂西北卡林型金矿氧化矿体形成期间的作用,应用微生物学检验方法和光学显微镜、透射电镜等方法分离、鉴定了桂西北明山卡林型金矿表生带氧化矿石、半氧化矿石、原生矿石样品中的微生物。
短句来源
     Microorganisms play significant roles in the process of supergene leaching and enrichment of gold during the formation of the oxidized ores of Carlin-type gold deposits in northwestern Guangxi.
     微生物在桂西北卡林型金矿原生矿体向氧化矿体转化,金的表生淋滤和重新富集的每一个重要环节中都起到了一定的作用。
短句来源
  “oxidized ores”译为未确定词的双语例句
     After addition of 4wt% complex adhesive, the compression strength of grained sample reached 4.0 kgf/cm 2 in 24 h, the reaction between gold and NaCN solution in the oxidized ores was nearly accomplished, and the leachability of gold was up to 96%.
     4 %复合粘结剂 (内含 15wt%催熟剂 No.1)的掺入量 ,不仅使成球粒在 2 4 h内的抗压强度达到 4 .0 kgf/cm2 ,而且在 2 4 h内氰化反应近乎完全 ,金溶出率高达 96 %。
短句来源
     The high quality 1 # copper could be yielded at cathode when leaching extracting electrodialysis technique was adoped for treatment of difficultly dressing low grade oxidized ores.
     采用浸出-萃取-电积工艺处理难选低品位氧化铜矿,可产出高质量的1#阴极铜。
短句来源
     On the Technology for Preparating Copper Sulfate from Copper-containing Scraps and Copper Oxidized Ores
     含铜废料及氧化铜矿制备硫酸铜的工艺
短句来源
     This paper provides very useful experience of treating eyanide-bearing liquid waste and the construction and operation of small-medium scale concen-tration plant where the oxidized ores containing coarse gold are well-disposed.
     本文为处理含粗粒金、氧化矿类型的中小型选金厂的建设、生产及含氰废水处理提供十分有益的生产实践经验。
短句来源
     Orematerials were derived from the Hercynian basalt and Mn-bearing limestone or other lean ore rocks in the Beiya Formation of the middle Triassic Ore bodies chiefly consist of oxidized ores (pyrolusite, manganite or psilomelane) and carbonate ores (rhodochrosite, manganocalcite) with distinct zoning for these two kinds of ores.
     锰质来源于海西期玄武岩和中三叠统北衙组中的含锰灰岩或贫矿石。 矿体主要由氧化物矿石(软锰矿、水锰矿或硬锰矿)和碳酸盐矿石(菱锰矿、锰方解石)组成,两者具有明显的分带。
短句来源
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  oxidized ores
Reduction of weakly magnetic oxidized ores in a low-temperature plasma
      
At Barite Hill, production has dominantly come from oxidized ores.
      
The wet tropical weathering of Precambrian spessartite quartzites leads to the formation of secondary oxidized ores.
      
It is shown that the oxidized ores are the main carrier and environmental source of Cd.
      
However, in oxidized ores, Cd concentrations are highest, varying within the range of 110×10-6 to 8200×10-6, averaging 1661×10-6.
      
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Synthetic samples were prepared and studied to simulate the phase changes of iron—cobalt compounds in the reduction roasting—ammoniacal leaching processing of oxidized ore. Metallic phases formed from reduction of oxides of iron and cobalt at temperatures of 500-800℃ are alloys. By controlling the conditions of reduction, cobalt in the oxides of iron and cobalt can be completely reduced to the metallic phase while most of the iron is reduced to Fe_3O_4. In ammoniacal leaching, the Fe-Co alloy with cobalt...

Synthetic samples were prepared and studied to simulate the phase changes of iron—cobalt compounds in the reduction roasting—ammoniacal leaching processing of oxidized ore. Metallic phases formed from reduction of oxides of iron and cobalt at temperatures of 500-800℃ are alloys. By controlling the conditions of reduction, cobalt in the oxides of iron and cobalt can be completely reduced to the metallic phase while most of the iron is reduced to Fe_3O_4. In ammoniacal leaching, the Fe-Co alloy with cobalt of a face-centered cubic structure disappears first, followed by the disappearance of the alloy with α-Fe structure. Most of the FeO dissolves rapidly, while a small portion remains undissolved during the rest of the leaching process. The percentage of cobalt in the FeO phase decreases as the amount of FeO phase increases. It seems that the cobalt in Fe_3O_4 is insoluble in the ammoniacal solution.

本文用合成样品对氧化矿还原焙烧过程中铁钻化合物物相变化进行了考察。以铁钴氧化物为原料,在550~800℃还原生成的金属相都是以合金状态存在。控制还原条件,能将铁钴氧化物中钴全部还原到金属相,铁大部分还原到Fe_3O_4相。在浸取过程中,具有面心立方金属钴结构的铁钴合金相先消失,具有α-Fe结构的铁钴合金相后消失。绝大部分FeO相很快溶出,剩下小部分FeO相在以后浸出中不再变化。FeO相中含钴量,随FeO相含量的增加而降低。Fe_3O_4相中的钴在氨溶液中似乎是不溶的。

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...

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

The mixed reagent of hydroxamate and xanthate,instead of xanthate alone,has been developed in treating copper oxidized ores of skarn type with reducedconsumption and increased copper recovery.The newer progress in copper oxidizedores flotation has been made by the reasonable usage of the mixed reagent.Testresults indicate that under the synergistic action of combined regulator,the copperconcentrate of 26%Cu grade can be produced from the ore containing malachiteand pseudomalachite with 80% recovery.When...

The mixed reagent of hydroxamate and xanthate,instead of xanthate alone,has been developed in treating copper oxidized ores of skarn type with reducedconsumption and increased copper recovery.The newer progress in copper oxidizedores flotation has been made by the reasonable usage of the mixed reagent.Testresults indicate that under the synergistic action of combined regulator,the copperconcentrate of 26%Cu grade can be produced from the ore containing malachiteand pseudomalachite with 80% recovery.When this hydroxamate-xanthate collectorsystem used to float another highly siliceous pelitic copper oxide ore,a copperconcentrate of 25% Cu can be obtained with recovery of 85% for free copper oxide.The proposed flowsheet is most useful to the efficiency of hydroxamate-xanthatein flotation of a siliceous Cu-Fe intergrowth oxidized ore containing Au and Ag.With this process not only a high quality copper oxidized concentrate of 36%Cucan be produced,but also a Ag-rich Au concentrate containing 340 g/t Ag and108 g/t Au can be floated selectively.And it benefits the recovery of Fe concen-trate from copper railings.

羟肟酸钠与丁黄药联用,可以提高矽卡岩氧化铜矿的浮选效率,降低药剂消耗.特别是羟肟酸-黄药“混合剂”的合理使用,促成了氧化铜矿浮选技术的新进展:处理含孔雀石和假孔雀石矿石,能获得精矿品位约26%Cu,回收率近80%,从高硅泥质铜矿中,可直接浮出精矿含铜≥25%.自由氧化铜回收率≥85%,选择合适的调整剂及相应的流程结构更有利于羟肟酸-黄药“混合剂”在Cu-Fe共生难选养化矿浮选中发挥最佳效用,不仅可以得到品位达36%的优质铜精矿.而且能预先浮出富含Ag的金精矿(每吨含Ag为340g,Au为108g),并有助于从铜扫选尾矿中回收铁.

 
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