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copper concentrated
相关语句
  铜精矿
     Determination of Osmium Isotopes in Copper Concentrated and Waste Residue by Inductively Coupled Plasma-Mass Spectrometry
     电感耦合等离子体质谱测定铜精矿及废料中痕量锇同位素
短句来源
  相似匹配句对
     COPPER
     铜
短句来源
     STUDY OF THE TECHNOLOGY OF SEPARATION OF CONCENTRATED COPPER BY LIQUID MEMBRANE
     耐荫植物清除室内SO_2的研究
短句来源
     Elution of copper and cyanide using concentrated saline solution
     高浓度盐对氰化物和金属铜的解吸研究
短句来源
     COPPER IN STEELMAKING
     炼钢过程中的铜
短句来源
     concentrated in vacuum;
     真空浓缩 ;
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This paper deals with the upgrading of the copper concentrate from

本文简要地介绍了用CMC提高河北铜矿铜精矿品位,降低氧化镁含量的小型试验结果。根据矿石组成和矿物构造,作者认为河北铜矿铜精矿品位低的基本原因是天然可浮性很好的层状硅酸盐矿物如滑石,以及黄铁矿和磁黄铁矿等进入了泡沫产品。根据CMC分子结构和化学性质,对CAC与矿物表面作用机理作了简要的探讨。

In the basic metal industry energy-dispersive radioisotope X-ray fluorescence analysers are used for quality control of the products from all stages of mineral pro- cessinsg, melting and refining. Accuracy of measurement mainly depends on the ele- ment of interest and the form and composition of the host matrix. In energy-dis- persive XRF analysis the intensity of fluorescent X-ray from the wanted element must be measured independently of variations in intensities of other X-rays emitted by the sample. It is...

In the basic metal industry energy-dispersive radioisotope X-ray fluorescence analysers are used for quality control of the products from all stages of mineral pro- cessinsg, melting and refining. Accuracy of measurement mainly depends on the ele- ment of interest and the form and composition of the host matrix. In energy-dis- persive XRF analysis the intensity of fluorescent X-ray from the wanted element must be measured independently of variations in intensities of other X-rays emitted by the sample. It is well known that scintillation detectors can not resolve the energy of fluorescent X-rays of some neighbouring elements such as copper and iron, and to overcome this limitution. A metal composite filter of absorption edge type can be used. This type of filter is a special one, which can discriminate X-ray energy higher than that of the interference elements. However, the conventional filter of absorption edge can only be used for X-ray energy of the wanted element lower than that of interference elements. Thus, we suggest that the metal com- posite filter of absorption edge type should be used when the X-ray energy of the wanted element is higher than that of the interference elements. It's mainly for use in immersion probes. This filter is made of N-L composite power. When mea- suring copper in copper concentrate, the absolute error of the grade achieved is most- ly less than ±0.3% and this can fully meet the demand of industrial process control analysis. From above, it can be predicted that in other pulp on-stream analysis, a relative composite filter can certainly be made if only the content of the neighbor- ing elements is high and the X-ray energy of the element to be measured is higher than that of the interference elements. This research work covers these respects: the preparation of N-L composite powder, the blending ratio test of two elements, the minimum mass thickneess test at the given blending ratio, the modulation and testing of the filter performance and test measurement on the sample of natural powder.

本文介绍的复合元素滤光片,主要供XRF分析装置的浸入式探头使用。直接激发型浸入式探头,通常采用吸收限型滤光片,其使用原则限于被测元素的X射线能量低于干扰元素的X射线能量;但当被测元素的X射线能量高于干扰元素的X射线能量时,就不能使用吸收限型滤光片,若采用复合元素滤光片就能顺利地加以解决。用复合元素滤光片测定铜精矿中含铜量在10~22%范围内的样品,其绝对误差小于±0.3,满足控制分析精度的要求。

Xiangdong (Eastern Hunan) Tungsten Mine is located in the east of Hunan Province. Its concentrator, put on stream early in 1956 and originally designed to process 250 tons of ore per day, has reached now the throughput over 1000 tpd since the second expansion. The deposit in this area belongs in medium-high temperature hydrothermal deposits with fissure-filling of wolframite-quartz veins. The main ore minerals are wolframite, chalcopyrite, scheelite, cassiterite and others, wolframite accounting for 75-80% of...

Xiangdong (Eastern Hunan) Tungsten Mine is located in the east of Hunan Province. Its concentrator, put on stream early in 1956 and originally designed to process 250 tons of ore per day, has reached now the throughput over 1000 tpd since the second expansion. The deposit in this area belongs in medium-high temperature hydrothermal deposits with fissure-filling of wolframite-quartz veins. The main ore minerals are wolframite, chalcopyrite, scheelite, cassiterite and others, wolframite accounting for 75-80% of total tungsten minerals. The principal gangue mineral is quartz, granite being the host rock. The concentrator flowsheet is composed of four sections, crushing and preconcentration, gravity concentration, slime treatment, and cleaning. The crushing-preconcentration section is provided with two stage crushing in closed circuit, followed by hand sorting and heavy medium separation, the latter is capable of rejeting worthless gangue amounting to 20-50% of the run-of-mine ore. In the gravity concentration section the ore undergoes two stage grinding, three stage jigging and five stage tabling. Jigging is intensified to recover 58% tungsten of total metal content in the ore. The slime treatment section recovers copper minerals by flotation, and both tungsten and tin minerals by spring tables, obtaining copper concentrate, containing 15% Cu with recovery 70%, and tungsten concentrate, assaying 53% WO_3 with recovery 45-50%. In the cleaning section table-flotation and flotation are used to separate sulphides and yield rough concentrates, magnetic separation is used to separate wolframite from cassiterite, scbeelite and other minerals, flotation—to separate scheelite from cassiterite, and hydrometallurgical process—to treat refractory tungsten middlings for production of tungsten trioxide. The Xiangdong concentrator yields fire products: wolframite, scheelite, copper and tin concentrates and tungsten trioxide. The recoveries of WO_3, Cu and Sn are 85%, 72.95% and 30% respectively.

本文根据湘东钨矿的选矿生产实践,叙述该矿区的矿石性质、选矿工艺流程及指标,并加以评价和提出改进的意见。本文从一个侧面阐明我国黑钨矿选矿技术现状和水平。

 
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