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铜-铅
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  “铜-铅”译为未确定词的双语例句
     In the flotation separation of Cu-Pb artificial minerals a Cu concentrate containing 31.44% Cu and a Pb concentrate containing 83.58% Pb are obtained with recoveries of 95.0% and 95.32%, respectively.
     黄腐酸钠用于铜-铅人工混合矿分离,可获得品位为31.44%,回收率95.0%的铜精矿和品位为83.58%、回收率95.32%的铅精矿。
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     Re-Os isotopic dating of molybdenite from Datongchang copper-lead-zinc deposit in Tengchong area, western Yunnan
     滇西腾冲大硐厂铜-铅-锌矿床的辉钼矿Re-Os同位素定年
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     Ore control factors of the Huangshashi copper lead zinc deposit in Hunan
     湖南黄沙寺铜-铅-锌矿床控矿因素浅析
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     New discovery and understanding about seeking the copper-lead-zinc polymetal deposits in volcanic basin of east Guangdong
     粤东火山岩盆地铜-铅-锌多金属矿床找矿新发现与认识
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     Characteristics and metallogenic potential of skarn copper-lead-zinc polymetallic deposits in central eastern Gangdese
     西藏冈底斯中东段矽卡岩铜-铅-锌多金属矿床特征及成矿远景分析
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  相似匹配句对
     LEAD
    
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     COPPER
    
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     Within the layer the copper?
     ?
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     Centrifugal Pouring for Copper-lead Alloy Bearing Shell
     轴瓦的离心浇注
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     Test Research on Copper-lead Separation
     分离试验研究
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  copper-lead
Variography of ores from the Rubtsovsk massive-sulfide copper-lead-zinc deposit (Altai Territory)
      
Isotopic ratios of trace amounts of lead in pyrite and pyrrhotite have been successfully used to distinguish unmineralized Ordovician from mineralized Silurian black shales around the Woodlawn copper-lead-zinc prospect.
      
Al Amar Fault is a "copper-lead line" dividing a Pb-Ag subprovince (of sialic derivation?) from a Cu-Zn-Au sub-province (of plate margin/island arc derivation?).
      
Thermal analysis and kinetics of the copper-lead matte roasting process
      
In this paper, the results of copper-lead matte investigations are presented.
      
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Rapid polaropraphy with the mercury film electrode was applied to the simultaneous determination of Cu2+, Pb2+, Cd2+ and Zn2+ in water. When these ions were electrolyzed in 0.15M NH4Gl medium for 10 min. at -1.3V (VS. Ag- Hg electrode), the metals were elcctrodeposited on a mercury film electrode, and an anodic dissolution curve was recorded by an X-Y functional recorder from -1.3V to -0.1V. The peak heights were linear with concentrations within the range or 10-6M-10-8M for Cu, Pb, Zn and of 10-6M-10-9M for...

Rapid polaropraphy with the mercury film electrode was applied to the simultaneous determination of Cu2+, Pb2+, Cd2+ and Zn2+ in water. When these ions were electrolyzed in 0.15M NH4Gl medium for 10 min. at -1.3V (VS. Ag- Hg electrode), the metals were elcctrodeposited on a mercury film electrode, and an anodic dissolution curve was recorded by an X-Y functional recorder from -1.3V to -0.1V. The peak heights were linear with concentrations within the range or 10-6M-10-8M for Cu, Pb, Zn and of 10-6M-10-9M for Cd. This method is suitable for the determination of trace amounts of these elements in water.

快速极谱仪与汞膜电极联用,阳极溶出伏安法同时测定水中、镉、锌。在O.15MV氯化铵介质中,调节pH至5.5,于一1.3伏电解10分钟(对Ag-Hg电极),这些金属便电沉积在汞膜电极上,并用记录仪于-1.3伏~-0.1伏记录阳极溶出曲线。10~(-6)M~10~(-8)M的、锌和10~(-6)M~10~(-9)M的镉,其浓度与峰高呈线性关系。此法适用于测定水质中的这些痕量元素。

This article describes a new process for the continuous decopperization of crude lead, which has been applied in the Shenyang Smelter since September 1974. The basic principle of the process and the structure of the furnace are described. The production practice, operational experience, principal technical indices and process improvements in the past five years are given in detail. The article further describes the following new propositions about the process. (1) There is no relationship between the copper...

This article describes a new process for the continuous decopperization of crude lead, which has been applied in the Shenyang Smelter since September 1974. The basic principle of the process and the structure of the furnace are described. The production practice, operational experience, principal technical indices and process improvements in the past five years are given in detail. The article further describes the following new propositions about the process. (1) There is no relationship between the copper content in decoppered lead and the lead content in the matte produced. Even when the Cu content in the decoppered lead is less than 0.08%, high Cu: Pb ratio matte can be produced. (2) The ratio be- tween sulfur and copper (S/Cu) in the charge should be 0.5 instead of 0.25. A ratio of 0.25 is not sufficient for the process. (3) In order to decrease the lead content in the matte and to raise the Cu: Pb ratio, it is necessary and reasonable to add some scrap iron to replace the lead in it. To judge the correct end point of iron addition is the crux of the process. The composition of the crude lead treated is as follows (%): 96-97.5 Pb, 0.8- 1.3 Cu, 0.3 As, 0.8 Sb and 0.2-0.5 S. The blast-furnace crude lead is charged into the furnace as hot liquid. Then 0.6-0.8% soda, 0.2-0.3% coke and 2% lead sulfide con- centrate are added. The decoppered lead is discharged from the end of furnace by syphoning. De- pending on the degree of aggregation, the matte and slag are discharged about once a day. After discharging the slag, scrap iron is added into the matte to replace the lead in it. The Cu content of the output lead is 0.05-0.08%, it may be cast into anodes directly for e1ectrolysis. Lead content of the tapped slag is<2%. The matte has a Cu: Pb ratio of 3-5 (average 4), and can be sent to the copper smelter to re- cover copper without additional treatment. The productivity of the furnace bed is 10-l2 t/m~2. day. The decopperization efficiency is about 95%. In the output lead the recovery of Pb is about 99%, Sb-80%, As-70%. The volatility of lead is 0.3-0.4%. Finally, it is pointed out that maintaining a S: Cu ratio of 0.5 is of importance to the decopperization and matte formation process and in the elimination of bloc- kage.

本文简要地叙述了沈阳冶炼厂的粗连续脱新工艺。文中就脱过程阐述了如下一些新的论点:脱铜铅与产出的冰(或铜铅比)无关。在脱铜铅低于0.08%的同时,能够产出钢比较高的冰;炉料中的硫比应保持0.5,而不是0.25;为了降低冰,提高铜铅比,向冰中加入铁屑置换其中的是必要的,合理的,准确地判断加铁过程的终点是这一操作过程的关键。

It is found experimentally that mandelic acid is an excellent masking agent for titanium (Ⅳ) at pH 3.0 to 7.0. It can quantitatively displace EDTA from the Ti-EDTA complex without the interference from zirconium, thorium, iron, bismuth, aluminum, gallium, indium, cerium and other rare earths, copper, lead, zinc, nickel, cobalt, cadmium, manganese etc.It is also found that mandelic acid is much superior to lactic acid, which was found to be a good masking agent for titanium. When the EDTA displaced from the Ti-EDTA...

It is found experimentally that mandelic acid is an excellent masking agent for titanium (Ⅳ) at pH 3.0 to 7.0. It can quantitatively displace EDTA from the Ti-EDTA complex without the interference from zirconium, thorium, iron, bismuth, aluminum, gallium, indium, cerium and other rare earths, copper, lead, zinc, nickel, cobalt, cadmium, manganese etc.It is also found that mandelic acid is much superior to lactic acid, which was found to be a good masking agent for titanium. When the EDTA displaced from the Ti-EDTA complex with lactic acid was titrated with a standard nitrate solution, the end point only lasted for 10 to 20 seconds if aluminium was present, because lactic acid could slowly displace EDTA from the Al-EDTA complex. We found that mandelic acid does not mask aluminum. This makes possible the stepwiso titrations of iron, titanium and aluminum using mandelic acid and ammonium fluoride as masking agents.

本文研究苦杏仁酸的隐蔽性能,发现它在pH2.5至7.0为钛(Ⅳ)的优良隐蔽剂,隐蔽能力随pH的增大而稍有降低。苦杏仁酸能置换络合钛的EDTA.在pH3~5.5,锆、钍、铁、铋、铝、镓、镧、铈、稀土、、锌、镍、钴、镉、锰等不干扰置换滴定。本文发现苦杏仁酸不隐蔽铝,即使有大量铝时,也能准确地置换滴定钛。因此,苦杏仁酸比乳酸更为优越。本试验确定苦杏仁酸为钛的选择陸很高的隐蔽剂,故可能连续滴定铁铝钛。

 
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