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screen
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    Theory and practice of the probability Classification Screen for Coal
    煤用概率分级的理论和应用
短句来源
    Dynamic Parameters of a Two-mass Probability Classification Screen
    双质量概率分级的动力参数分析
短句来源
    Commercial Test of Probability Screen
    煤用概率分级的工业性试验
短句来源
    The Application of GS 1000×2000 Type Probability Screen in Preparation Plant
    GS1000×2000型煤用概率分级在选煤厂的应用
短句来源
    ZSD-1894 Type Screen with Constant Bed Thickness and Its Commercial Test
    ZSD1894型等厚及其工业性试验
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  筛网
    DYNAMIC CHARACTERISTICS AND STRENGTH OF PIANO WIRE SCREEN MESH
    琴弦筛筛网的动态特性及强度研究
短句来源
    Application of Screen Mesh Cyclone in Coarse Clean Coal Slime Recovery System
    筛网旋流器在粗精煤泥回收系统中的应用
短句来源
    Calculation of Filter Ratio of Multi-Layer Screen
    叠层筛网透筛率计算
短句来源
    Application of Argon Arc Welding Technology in Welding Process of Stainless Steel Wire Screen Mesh
    氩弧焊焊接工艺在不锈钢筛网生产中的应用
短句来源
    After a series of condition test, many parameters were decided: the grind granularitywas –200 mesh 27.8%,40 mesh screen was used in order to concentrate flake mica;
    棒磨作业磨矿细度至-200 目占27.8%,用40 目筛网的筛子筛出大片云母;
短句来源
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  筛子
    After a series of condition test, many parameters were decided: the grind granularitywas –200 mesh 27.8%,40 mesh screen was used in order to concentrate flake mica;
    棒磨作业磨矿细度至-200 目占27.8%,用40 目筛网的筛子筛出大片云母;
短句来源
    Measurement and analysis of productivity and screening efficiency on the TZ120-240 single layer screen and the 2TZ120-240 double layer screen are carried out by using orthogonal design method. The influence of altitude, direction angle, angle of the screen surface and burden thickness on productivity and screening efficiency is revealed. The optimum plan of all of the parameters is also found.
    用正交设计的方法,对TZ120—240单层筛和2TZ 120—240双层筛的生产率和筛分效率进行了实测研究,得知了筛子的振幅、振动方向角、筛面倾角和料层厚度对生产率和筛分效率的影响关系,找到了上述各种参数的最佳组合方案。
短句来源
    Flowsheet Ⅱ which includes two stage grinding,classification with screen and three stage magnetic separation is optimal.
    通过对四种流程方案的分析比较 ,认为流程方案 (两段磨矿 ,筛子分级 ,3段磁选工艺 )更适合矿石的结构特性 ,经济效益最佳。
短句来源
    Four improvement proposals and the viewpoint presented by author are discussed. The existed spring cone crusher(PYD2100 type)is replaced with single-cylinder short-head crusher(PYY1650/100 type)with vibration screen sizes of 22 and 16mm respectively. Two screens are used for treatment of copper ore while one screen for converter residue,ensuring grain size of different products from two kinds of ore.
    提出了解决问题的四种方案 ,并阐明了作者对改造所持的观点 ,即将现有PYD2 10 0弹簧圆锥破碎机改为单缸液压短头圆锥破碎机 (PYY16 5 0 /10 0型 ) ,同时振动筛筛孔尺寸分别为 2 2mm和 16mm ,处理铜矿石用 2台筛子 ,处理转炉渣用 1台筛子 ,从而保证两种矿石的不同产品的粒度要求。
短句来源
  “screen”译为未确定词的双语例句
    INDUSTRIAL TEST OF GPS-900-3 HIGH FREQUENCY FINE-MESH SCREEN
    GPS-900-3型高频细筛工业考核试验
短句来源
    YK 3.0×5.25rotary vibration screen
    YK3.0×5.25型圆振动筛
短句来源
    2TYA1342 Model Eliptically Vibrating Screen
    2TYA1842椭圆振动筛
短句来源
    Problems existing in design theory of elliptic vibrating screen
    椭圆振动筛设计理论中的几个问题
短句来源
    Productivity and Screening Efficiency of Linear Vibration Screen
    直线振动筛的生产率和筛分效率
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  screen
We also demonstrate these spatial changes on the screen using Visual Basic language and GIS functions, which will help decision makers to have a clear view of species and site suitability changes over large areas.
      
The authors give a wave function of the state of particles on the screen in abovementioned configurations.
      
Many important proteins, such as some nucleoprotein transcriptional factor, carry out the regular method and construct the bait-BD vector to screen the library containing AD vector.
      
And we used this two-hybrid library to screen FOXA3, a hepatocyte nuclear factor, and found out an interacting protein: complement component C3.
      
Polymerase chain reaction and DNA sequencing were used to screen for KCNQ1, KCNH2, KCNE1, KCNE2 and SCN5A mutation.
      
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An account is given of the significane of sizing of power coal in regard to coal energy saving and comprehensive utilization of coal,However ,there is yet no effective way to carry out fine screening of coal with a surface moisture over 7%,Making use of the principlc of probability the writers have conducted an investi-gation into the rate of going through screen apertures of granular material and the screening dnamics as well as the interrelationship between the rate of going through and such factors...

An account is given of the significane of sizing of power coal in regard to coal energy saving and comprehensive utilization of coal,However ,there is yet no effective way to carry out fine screening of coal with a surface moisture over 7%,Making use of the principlc of probability the writers have conducted an investi-gation into the rate of going through screen apertures of granular material and the screening dnamics as well as the interrelationship between the rate of going through and such factors as relative particle sixes ,slope of screen deck ,projecting angle of grains ,etc .As revealed in laboratory tests.it is possible to separate effectively 6-ommpowder coal from raw coal of 13-omm and with 7-12% of surface moisture by means of screen deck employing greater slope and aperture inductrial tests with GS1000×2000 probability classification screen give the following results in the treatment of raw coal of size 50-omm and susface moisture 7-14%,the classified products are +25mm 13-25mm,6-13mm and -6mm the throughput being 70 to 80tons per hour

本文阐述了动力用煤按粒度分级对节约煤炭能源和合理加工利用煤炭资源的重要意义。但是,当前对外在水分在7%以上的煤炭进行细粒级筛分尚无有效方法。本文作者利用概率论的原理研究了粒状物料的透筛速度和筛分动力学以及相对粒度、筛面倾角、颗粒投射方位角等因素与粒状物料透筛概率之间的相关关系。 实验室试验研究表明:采用大倾角、大筛孔的筛面可以有效地从外在水分为7~12%,粒级为13mm~0的原煤中分离出6mm~0的粉煤。GS—1000×2000型概率分级筛的工业性试验表明:能有效地处理原煤粒度为50mm~0、外在水分为7~14%的煤炭的分级,筛分成+25,13~25,6~13和—6mm的粒级煤产品,处理量达70~80T/H。

This paper deals with an analytical study of the vibration system of a mass probability classification screen. On the basis of theory and analysis of data obtained in practice, it is found that the shearing rubber spring used between the two masses, that is, between the balance weight and the vibrating frame, is heated in the course of operation and that the rigidity coefficient of the rubber increases with the rise in temperature. Therefore, it is recommended that, in order to maintain its amplitude practically...

This paper deals with an analytical study of the vibration system of a mass probability classification screen. On the basis of theory and analysis of data obtained in practice, it is found that the shearing rubber spring used between the two masses, that is, between the balance weight and the vibrating frame, is heated in the course of operation and that the rigidity coefficient of the rubber increases with the rise in temperature. Therefore, it is recommended that, in order to maintain its amplitude practically constant, the working frequency ω of the frame be kept smaller than the free vibration frequency ω2. Design calculation for parameters of probability classification screen is also given.

本文对概率分级筛的双质量振动系统进行了分析研究,推导出系统的固有频率和共振转速。作者根据理论和实际资料分析说明:平衡块和筛体两个质量之间所采用的剪切型橡胶弹簧在运转过程中产生热量,橡胶的刚度系数随橡胶温度升高而提高。因此,建议采用工作频率ω<固有频率ω_2以保持筛箱振幅基本不变。文中还提出了概率分级筛参数的设计计算。

Hongtoushan copper concentrator is a middle-sized plant,being located at Changbaimountain range,100km to the northeast of Shenyang,with convenient railway trans-port. Hongtoushan formation is composed of a volcano-sedi-mentary rock system suffe-ring from mid-depth metamorphism,surrouded by a big mixed granite complex develop-ment.Its ores are complex sulphides,belonging to copper bearring pyrite.The recoverableminerals are mainly:pyrite,pyrrhotite sphalerite and chalcopyrite.The orescontain 1.7% Cu,2% Zn,18%...

Hongtoushan copper concentrator is a middle-sized plant,being located at Changbaimountain range,100km to the northeast of Shenyang,with convenient railway trans-port. Hongtoushan formation is composed of a volcano-sedi-mentary rock system suffe-ring from mid-depth metamorphism,surrouded by a big mixed granite complex develop-ment.Its ores are complex sulphides,belonging to copper bearring pyrite.The recoverableminerals are mainly:pyrite,pyrrhotite sphalerite and chalcopyrite.The orescontain 1.7% Cu,2% Zn,18% S and a small amount of g old and silver.The deposit was found in 1958.The mine was partially put into stream at the end ofthe 1959,the plant capacity being 600t/d.The throughput increased to 1300t/d in 1969and at present to 2400t/d.The underground mined ores are crushed to minu(?)-200mm and then conveyed toa circular ore bin.With an aerial cable conveyor they are transported to a coarse orebin at the concentrator.The crushing plant is equipped with (?)1650mm standard andshort-head cone trushers,together with vibrating screens,forming a two-stage closedcircuit.The final product size of crushing is minus-14mm,the ratio of reduction being15.The centralized programme control of the crushing operation has been realized.In grinding section,one grate ball mill(2.7m × 3.6m)and the other three sets of thesame type(2.7m × 2.1m)are principal mills;one conical ball mill(2.4m × 1.8m)isauxilliary,forming a closed circuit with spiral classifiers and a hydrocyclone.156 model6A flotation cells are used to produce copper,zinc and sulphur concentrates.Concent-ration flowsheets have been modified four times to improve the metallurgical perfor-mance since the operation start-up.The differential flotation at the beginning of theoperation was changed into the copper-sulphur bulk flotation,the copper concentrategrade was improved by 3% and the recoveries of copper and sulphur increased by 2%and 14% respectively.After introduction of copper-sulphur bulk flotation flowsheetswith two-stage grinding followed by flotation,the recoveries of copper,zinc and sulphurwere increased by 1.5%,3% and 8% respectively.The copper concentrate grading 20%Cu,with a recovery of 95% Cu,has been obtained.By dewatering,the final concentrate moisture content is reduced 10-12%.Thetailings are pumped into the 4Mm~3 railings dam.A portion of tailings water has beenreclaimed for use at the concentrator.In order to make full use of the resource and reduce contamination by wastes,apyrite concentration plant with a capacity of 1500t/d has been built up to treat tai-lings from the dam,the remainder is conveyed to the underground as filling material.

本文简要地介绍了红透山铜矿红透山选矿厂的生产工艺,工艺流程的演变,目前的选矿现状,自动化和污水处理等情况。

 
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