共查询到20条相似文献,搜索用时 78 毫秒
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《有色冶金设计与研究》2015,(6)
介绍了张家港100 kt阴极铜工程的净液车间工艺流程在以往工艺流程基础上所做的改进。该项目采用了一次脱铜和真空蒸发并行的流程,并且设置了中段脱铜以适应项目需求;一次脱铜电解工序的设计中采用了双向平行流工艺;冷凝水和酸性废水也得到了充分利用。 相似文献
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描述了采用固/气反应从废钢脱铜的原理;介绍了实验室和扩大规模脱铜试验装置、有关参数及其操作工艺;提供了已经取得的数据;指出了尚待解决的问题。 相似文献
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采用铜阳极泥常压预浸脱铜和加压预浸脱铜工艺,对阳极泥脱铜流程进行研究。介绍了预浸脱铜工艺流程,分析了阳极泥中铜含量变化对生产工艺造成的影响,梳理了处理方式,阐述了脱铜处理过程中的调整关键,提出了改进意见以达到脱铜能力的提升和尾液的再利用。 相似文献
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以贵冶生产实绩为基础 ,分析了高氧浓度、高冰铜品位铜冶炼条件下铋在火法工序及电解工序的分配规律 ;评述了提高脱铋效果 ,降低铋对阴极铜质量影响的技术措施 ;指出建立脱铋工序的必要性及途径。 相似文献
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《有色金属材料与工程》2017,(1)
<正>专利名称:高杂质铜阳极泥处理新工艺专利申请号:2016104358823公布号:CN105969989A申请日:2016.06.20公开日:2016.09.28申请人:铜陵有色金属集团铜冠新技术有限公司本发明公开了高杂质铜阳极泥处理新工艺,它包括以下步骤:(1)将铜阳极泥进行硫酸盐化焙烧除硒、浸出脱铜;(2)侧吹炉还原熔炼:将造渣剂和还原剂加入到硫酸盐化焙烧除硒脱铜后的铜阳极泥中,混匀得 相似文献
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熔体过滤法钢液脱铜的研究 总被引:8,自引:0,他引:8
讨论了熔体过滤法钢液脱铜的基本原理。用氧化物组成的脱铜剂进行了钢液脱铜的可行性试验。结果表明:通过还原反应向含铜钢液中加入活性合金元素,提高了氧化物对钢液中铜元素的选择性吸附作用,每克脱铜剂可脱铜约0.23g。 相似文献
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A new approach for the removal of copper from solid ferrous scrap has been proposed by the present authors. With this process, solid ferrous scrap intermingled with pure copper is brought into contact with molten aluminum, which dissolves copper preferentially. After a duration of 5 to 30 minutes at temperatures between 963 K and 1223 K, steel scrap is removed from the bath, which is free of copper contamination. A drawback of this process is that {Al + Cu} alloys can adhere to the solid ferrous scrap after removal from {Al + Cu} bath. As a solution to this problem in this paper a two-stage treatment is proposed. In addition, the application of a three-layer process for the separation of aluminum from molten Al + Cu + Fe alloys is described. 相似文献
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A new approach for the removal of copper from solid ferrous scrap is described. With this proposal, solid ferrous scrap intermingled with copper is brought into contact with molten aluminium, which preferentially dissolves copper. After a duration of 5 to 10 minutes at a temperature of 1018 ± 5 K, steel scrap is removed from the bath, resulting in being free of copper contamination. The present method offers the advantage of far lower costs than any other processes ever suggested for copper removal. 相似文献
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研究了采用铁碳微电解方法回收铜矿山含铜酸性废水中铜离子的可行性,并与铁屑法进行对比。研究表明,铁碳微电解法效果不同于铁屑法,具有去除效果好、反应速度快、所需时间短和节省铁屑用量的优点。反应时间比铁屑法节省三分之二以上,去除效率高20%左右。采用铁碳微电解法处理后,在处理时间30min,铁碳质量比为1:1和铁碳总量为2g条件下,实际铜矿山含铜酸性废水经一次处理后铜离子去除率达到95.6%,实际废水中铜离子浓度从98.6mg/L下降到4.3mg/L。铁碳微电解法是一种处理矿山含铜酸性废水及回收其铜资源的实用有效方法,具有很好的推广应用价值。 相似文献
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随着废钢积累和在炼钢过程的循环利用,钢中Cu含量不断增高,影响钢铁产品质量,严重制约了废钢的利用。因此,需要在冶金过程中将Cu尽可能脱除。然而,Cu的热力学性质决定了冶金过程的氧化和还原精炼难以将Cu从铁液或钢液中去除。在分析总结现有各种脱铜方法的基础上,提出了一种基于选择性氯化和挥发的新方法,其要点为:首先使铁水或钢液中的Cu部分氧化进入熔渣,然后通过熔渣中Fe和Cu的选择性氯化和挥发反应,最终Cu以高挥发性的氯化物形式得到脱除。目前的研究表明该方法理论上可行,初步的试验结果也证实可有效地进行Cu,Fe的分离,渣系的氧化性和组成对脱铜过程有重要的影响。 相似文献
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国内废杂铜制杆技术现状与发展 总被引:1,自引:0,他引:1
赵新生 《有色冶金设计与研究》2009,30(4):7-11
由于国内铜资源极其贫乏和工业化水平不断提高,废杂铜再生利用技术日益受到重视。本文对国内废杂铜制杆技术现状、特点和存在的问题,引进的西班牙拉法格火法精炼制杆技术的工艺和设备及其应用现状、优势进行介绍,提出拉法格技术需要探讨的问题,并对国内废杂铜制杆技术的创新前景进行展望。 相似文献
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Daehn Katrin E. Serrenho André Cabrera Allwood Julian 《Metallurgical and Materials Transactions B》2019,50(4):1637-1651
Metallurgical and Materials Transactions B - Copper contamination of end-of-life steel scrap is the main barrier to high-quality recycling. Preferential melting of copper from solid steel scrap is... 相似文献
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Mamoru KUWABARA 《Baosteel Technical Research》2010,(Z1):20
Copper and sulfur are typical residual elements or impurity elements in steel.Sufficient removal of them during steelmaking process is difficult for copper and costly for sulfur.Utilization of copper and sulfur in steel, especially in steel scrap,has been an important issue for a long period for metallurgists.Copper and sulfur may combine to form copper sulfide,which may provide a prospect to avoid the detrimental effects of copper and sulfur in steel.Unfortunately the formation mechanism of copper sulfide in steel has not been completely clarified so far. In the present paper,solution treatment of samples containing copper and sulfur are firstly performed at 1623 K for 2.7×10~3 s followed by quenching into water.The samples are then isothermally heat-treated at 673 K,873 K, 1073 K,1273 K and 1373K for different time followed by quenching into water again.The size,morphology, constituent and crystallography of sulfide precipitates in these samples are investigated by scanning electron microscope(SEM) and TEM equipped with EDS.Fine copper sulfides(less than 100 nm) are observed to coexist with silicon oxide in samples even isothermally heat-treated at 1 373 K for 1.44×10~4 s;Film-like copper sulfides are generally observed to co-exist with iron sulfide in all samples;Plate-like copper sulfides are observed especially in sample isothermally heat-treated at 1 073 K for 1.44×10~4 s.The formation mechanisms of these copper sulfides have been discussed. 相似文献