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recovery     
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  回收
    Recovery and Treatment of Th from RE Ore of Baiyunebo Deposit by Liquid Membrane Emulsion Technology
    乳状液膜技术回收处理白云鄂博稀土矿中钍的研究
短句来源
    SEPARATION AND RECOVERY OF Ni AND Zn FROM ACIDIC URANIUM-BARREN RAFFINATE BY ION FLOATATION
    用离子浮选法从酸性铀萃余液中分离和回收镍、锌
短句来源
    Dissolved air flotation for recovery of fine cassiterite
    溶解空气浮选回收细粒锡石
短句来源
    Molybdenite recovery at Cuajone
    库厄琼(Cuajone)选矿厂辉钼矿的回收
短句来源
    Dissolved air flotation for recovery of fine cassiterite
    溶气浮选法回收细粒锡石
短句来源
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  回收率
    The study of raising gold recovery by the use of sodium isopentyl xanthate
    异戊基黄药提高金回收率的研究
短句来源
    Industrial practice to improve gold recovery by amalgamation-branching flotation process in Kang-Shan Gold Mine
    采用混汞—分支浮选工艺提高康山金矿选矿回收率的工业实践
短句来源
    The improvement of gold recovery from gossan type gold ores by cyanide process
    铁帽型金矿氰化提金生产过程中提高回收率的措施
短句来源
    Practice of raising recovery of associated gold and silver
    提高伴生金银回收率的实践
短句来源
    Reasonable ascertainment of economic grade and recovery index of gold concentrate by means of regression analysis
    应用回归分析法合理确定金精矿经济品位和回收率指标
短句来源
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  采收率
    Discussion on the Ways to Improve the Recovery Rate of Coal-bed Methane
    提高煤层气采收率途径的探讨
短句来源
    Study on Status of CBM Reserves and Improvement of CMM Recovery
    煤层气赋存状态及提高煤层气采收率的研究
短句来源
    Therefore, CO_2-injection can replace or displace coalbed methane and enhance methane recovery more effectively than N_2-injection.
    注入CO2 比注入N2 可以更有效地置换或驱替煤层甲烷 ,提高煤层甲烷的采收率 .
短句来源
    theoretical recovery ratio is between 6.7%~76.5%, average 27%. Too low depletion pressure is inadvisable in exploitable CBM resources calculation.
    因此熏煤层气理论采收率变化于6.7%~76.5%之间,平均理论采收率27%熏在计算煤层气可采资源量时,枯竭压力不宜设定过低。
短句来源
    WATERFLOODING IS NOT THE MAIN CAUSE OF LOW RECOVERY EFFICIENCY OF CHANG 6 RESERVOIR IN ANSAI OILFIELD
    注水开发并非安塞油田长_6油层低采收率的主要原因
短句来源
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  回收利用
    Exploration of Coal Resource Recovery
    煤炭资源回收利用途径的探索与实践
短句来源
    A Study on the Technology of the Recovery and the Utilization of Ilmenite from Tailings of Iron Beneficiated in Panzhihua
    攀枝花选铁尾矿中钛铁矿回收利用工艺技术研究
短句来源
    Comprehensive exploiting and recovery and utilization;
    综合开发、综合回收利用 ;
短句来源
    Study of Recovery and Utilization of Out-of-date and Deteriorated Emulsion Explosives
    过期变质乳化炸药回收利用研究
短句来源
    Study on comprehensive recovery and utilization of tailings in Aoshan iron concentrator, Ma Anshan I & S Co.
    马钢凹山选铁尾矿综合回收利用的研究
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  recovery
Connections to signal recovery for positive functions, as well as partial spectral analysis, are also discussed.
      
The sensor has also been applied to the analysis of nicotine in tobacco samples with recovery rates ranging from 99.0% to 102%.
      
The 50% compressed PLA-PUs could recover almost 100% to their original shape within 10°C from the lowest recovery temperature (22°C-37°C).
      
In the recovery process the PLA-PU showed a maximum contracting stress in the range of 1.5-4 MPa.
      
Under these conditions, the recovery of the solvent is 86.0%.
      
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This article treats of the significance of flotation of fine coal slime in coal preparation and its relevant problems, taking a certain washery as an example.The relation between the character of the flotation feed and the petrographic constituents of raw coal and especially the flowsheet is briefly described. On the basis of technical data, the behavior of fine coal slime is summarized as having a high flotation rate and a low flotation selectivity.In order to improve the flotation process, following measures...

This article treats of the significance of flotation of fine coal slime in coal preparation and its relevant problems, taking a certain washery as an example.The relation between the character of the flotation feed and the petrographic constituents of raw coal and especially the flowsheet is briefly described. On the basis of technical data, the behavior of fine coal slime is summarized as having a high flotation rate and a low flotation selectivity.In order to improve the flotation process, following measures have been taken: 1.Using lower pulp density to increase the separation efficiency of fine slime.2.Rational selection and usage of flotation reagents in accordance with the floatabilities of feed ingrediants; using step-dosage method of feeding reagents to control flotation rate.3.Improving the flotaion machine to setisfy particular requirements of the process.4.Applying method of operation not only to improve the separation of fines but also to increase the recovery of coarse coal particles.Flotation indexes are given to show the steady improvement obtained as a result of adopting the above-mentioned measures.

本文指出细粒煤泥浮选在选煤生产上的意义,并以一个厂的浮选工作为例对其中存在的问题加以阐述.扼要地概括浮选原料的性质与原煤的岩相组成的关系,特别是和工艺流程的关系.根据实际资料,对细粒煤泥浮选的特点归纳为:浮选速度快、浮游选择性低. 考虑到这些特点,文中采取以下措施以提高浮选的技术指标:1.采用较低的矿浆浓度以提高细粒级的分选效果;2.合理选择和使用浮选剂以适应各成分的可浮性;用分段加药的方法控制煤泥的浮选速度;3.改进浮选机械以符合上述过程的需要;4.在浮选操作上既要改进细粒煤泥的分选又要提高粗粒煤泥的回收.并以具体数字说明,该厂采取这些措施后,取得了好的效果.

The gold-antimony-tungsten deposit of Xiangxi gold mine in Hunan province of China has been mined for a long time. This mine is a bigger one in scale in our country. The integrated gold-antimony-tungsten ore occurs in the layered vein deposit the chief metal minerals are native gold, antimonite and scheelite. Quartz is main gangue mineral. Native gold presents in ultra finely grained and in thin schistose form. Its grains are in the size range of 0.05-0.5mm. Antimonite is encountered in compact massive and acicular...

The gold-antimony-tungsten deposit of Xiangxi gold mine in Hunan province of China has been mined for a long time. This mine is a bigger one in scale in our country. The integrated gold-antimony-tungsten ore occurs in the layered vein deposit the chief metal minerals are native gold, antimonite and scheelite. Quartz is main gangue mineral. Native gold presents in ultra finely grained and in thin schistose form. Its grains are in the size range of 0.05-0.5mm. Antimonite is encountered in compact massive and acicular form. After grinding to 0.1mm it could not be liberated completely. Scheelite generally occurs coarsely grained. In 6mm grain size liberated grains are found. In the size of 70-100 micron scheelite is fully liberated. The run-of-mine ore is crushed in the three-stage open circuit and then ground in two-stage close circuit to 0.4mm. The mill product is fed to tables to yield gold concentrate, bulk concentrate, low-grade middlings and tailings. The former two concentrates are treated respectively to produce mercury-gold concentrate, antimony-gold concentrate and scheelite concentrate. The low-grade middlings is returned to the ball mill for regrinding. The mill discharge is fed to tables. The tailings are reground in another ball mill. Its product (0.1mm) is first floated for recovering antimony and gold and then scheelite. A antimony-gold concentrate sent to smelter and a rough scheelite concentrate are obtained. The later is cleaned and leached by acid for removing phosphorus mineral to produce scheelite concentrate. A combined flowsheet with gravity, flotation and amalgamation just described has been developed according to the mineralogical charasteristic of the ore mined and has been modified many times. Therefore this flowsheet can be more adapted to fit the raw or in this mine. The technological results of dressing are better.The recoveries of Au, Sb and WO_3 are 86.39%, 96.62% and 75.05% respectively. Thequality of the mercury-gold concentrate, antimony-gold concentrate and scheelite concentrate is stable.

湘西金矿是我国开采较早,规模较大的金锑钨矿山。金、锑、钨共生金属矿产于层状脉矿床。主要矿物有自然金、辉锑矿、白钨矿;脉石以石英为主。原矿经三段开路碎矿,二段闭路磨矿碎磨至-0.4mm,然后入选。采用重选、浮选和混汞的联合流程产出汞金、锑金精矿和白钨精矿三种产品。由于上述联合流程是根据该矿区矿物性质的需要经多次改革而形成的,因此,对该矿区矿石适应性较强,工艺指标较高,产品质量稳定。Au、Sb、WO_3的回收率已分别达到86.39%、96.62%,75.05%。

To provide an optimal industrial prototype for the extension project of the Tiekeng Iron Mine, a wet high-intensity magnetic separator of type SQC-6-2770 for concentrating weakly magnetic minerals has been newly developed by the joint efforts of the Jiangxi Nonferrous Metallurgy Research Institute, the Tiekeng Iron Mine and the Ganzhou Metallurgy Machinery Repair and Manufacture Plant. The result of the industrial test of the prototype at the Mine's concentrator was satisfactory. A limonite ore sample assaying...

To provide an optimal industrial prototype for the extension project of the Tiekeng Iron Mine, a wet high-intensity magnetic separator of type SQC-6-2770 for concentrating weakly magnetic minerals has been newly developed by the joint efforts of the Jiangxi Nonferrous Metallurgy Research Institute, the Tiekeng Iron Mine and the Ganzhou Metallurgy Machinery Repair and Manufacture Plant. The result of the industrial test of the prototype at the Mine's concentrator was satisfactory. A limonite ore sample assaying 34.45 percent Fe taken from the mine gave a concentrate grade of 50.29 percent Fe with a 70.57 percent recovery in sole magnetic separation (one roughing and one scavenging) and a 76.23 percent total recovery in combined process magnetic separation—flotation. The consumptions of power and water amount are 3.87 kwh and 3.85 m3 per ton of crude ore respectively. The separator has a separating ring of 2,770 millimeter in outer diameter. The whole machine weighs 30 tons, with an output ranging from 25 tph to 30 tph. Its construction features are fully described in this paper including the unique arrangement of six pole-pairs around the ring, the tubular copper coil for inner-cooling water circulation and the grooved pole shoe components as magnetic collector matrices. A field intensity of 17,000 oersteds under the pole, though not remarkably high, was chosen in order to bring about a compromise in design parameters for simple, cheap construction and economical operation, particularly for reducing power loss and consumption of constructing materials, in the light of shortening both magnetic and electric circuits. The electromagnetic performances of the machine are fully described in the paper. Main dimensions and technical data are also presented for reference.

由江西有色冶金研究所、铁坑铁矿和赣州冶金机械修造厂共同研制的湿式强磁场磁选机为铁坑铁矿的扩建工程和弱磁性铁矿物的选别提供了适用的工业样机。该机在铁坑铁矿选矿厂进行工业试验,已取得良好的结果。用以处理含铁34.45%的褐铁矿,经一次粗选一次扫选的单一磁选流程,可获得品位为50.29%的精矿,铁回收率为70.57%,电能消耗为每吨原矿3.87度,水量单耗3.85吨。采用磁—浮联合流程,铁的总回收率可达76.23%。该磁选机的分选圆环外径为2770毫米,机器总重30吨,处理能力为25~30(吨/时)。本文详细介绍了该机主要结构的特点,包括磁路的选定、冷却方式以及分选室的布置与聚磁介质(齿板)的组装形式等。设计中各种结构参数的选定都经过周密的计算,所以电路、磁路短,漏磁少,功率消耗低,贵重材料省,造价低,运转费用比较经济。文中详细介绍了该机的电磁性能,提供了机器的主要尺寸和技术数据。

 
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