资讯

正"NGL炉精炼废杂铜成套工艺及装备研究"达国际领先水平2008年,中国瑞林开始组织技术攻关,经过多年的研究与试验,成功开发出了具有自主知识产权的NGL炉精炼废杂铜成套工艺及装备,实现了技术上的多项创新。在2014年8月29日中国有色金属工业协会组织的科技成果鉴定会上,与会专家一致对该项工艺和装备给予了高度评价,认为该项成果达到了国际领先。"NGL炉精炼废杂铜成套工艺及装备"首次在废杂铜精炼工艺中采用了氮气搅动技术,有效强化了精炼过程的传质传热,提高了生产效率。该工艺采用氧气卷吸燃烧的方式供热,大大提高了热效率,缩短了生产周期,使排出的烟气量减少了     

倾动炉精炼废杂铜工艺

叙述了倾动式精炼炉在废杂铜火法精炼中的应用,以及与传统的固定式反向炉、回转式精炼炉在炉子结构和工艺操作方面的不同处,建议推广采用。     

NGL炉精炼废杂铜成套工艺及装备研究达国际领先水平

中国有色集团出资企业中国有色金属建设股份有限公司所属企业中国瑞林工程技术有限公司为主研发的NGL炉精炼废杂铜成套工艺及装备,通过两年多的工业化应用,实践证明了其工艺水平和装备水准已达到国际领先水平。     

废杂铜火法精炼生产光亮铜杆现状浅析

阐述了国内外利用废杂铜火法精炼生产低氧光亮铜杆技术及装备的现状,总结了国内该技术存在的问题,并对国内废杂铜火法精炼直接生产铜杆技术前景进行展望。     

处理高品位废杂铜的NGL炉工艺

介绍处理高品位废杂铜(含铜>90%)工艺流程,主要包括原料打包、NGL炉火法精炼、阳极浇铸、烟气二次燃烧、收尘。其中,NGL炉熔炼过程采用稀氧燃烧和氮气搅拌方式,提高了热利用率,强化了冶金反应,减少了烟气生成。     

铜精炼炉延长炉龄的对策措施

前言Preface广州珠江铜厂有限公司采用废杂铜为原料,阴极铜年产能3万吨,建有火法精炼和铜电解精炼生产系统。火法精炼生产系统配备容量90吨铜精炼反射炉一台,近年来针对炉子存在的炉顶砖砌体烧穿快、中修炉龄短,严重制约了铜电解产能效益提高的问题,提出并实施了炉龄攻关课题。     

摇炉精炼废杂铜的生产实践

借助国内外传统高品位废杂铜精炼的经验,采用摇炉精炼废杂铜。阐述了摇炉的生产实践,分析了加工成本以及摇炉需要改进的地方。     

倾动炉精炼废杂铜工艺

叙述了倾动式精炼炉在废杂铜火法精炼中的应用 ,以及与传统的固定式反射炉 ,回转式精炼炉在炉子结构和工艺操作方面的不同处 ,建议推广采用     

倾动炉精炼废杂铜工艺

叙述了倾动式精炼炉在废杂铜火法精炼中的应用,以及与传统的固定式反射炉,回转式精炼炉在炉子结构和工艺操作方面的不同处,建议推广采用.     

废杂铜火法精炼直接生产光亮铜杆的工艺和设备

介绍了目前世界上采用废杂铜火法精炼生产光亮铜杆的最新技术和设备.国内一直认为火法精炼杂铜很难达到高导电铜的标准,特别在几种杂质大量存在,并且变化无常时.普洛佩茨-拉法格公司FRHC火法精炼技术在此领域实现了突破.该项研究成果包括通过计算机辅助设计确定工艺参数和特种添加剂,以及有选择性的进行二次精炼等技术.它的精髓和核心是调整杂质成分和氧的质量分数,而不是最大限度的去除杂质.同时作者对该项技术存在的问题提出了自己的看法.     

再生铜设备——精炼摇炉

针对国内外废杂铜冶炼装备的不足,自主研发了精炼摇炉设备.通过阐述精炼摇炉设备构造、工艺优点及自动化控制,论述了精炼摇炉操作过程及机理,对精炼摇炉生产实践数据及炉寿进行了分析,总结了精炼摇炉技术经济指标、优点,并提出精炼摇炉需要改进的地方.     

NGL炉的电气控制

NGL炉作为铜再生精炼技术的载体,逐步取得了应有的市场地位,也被业界接受和认可。以此为工艺背景。NGL炉的电气传动和控制也形成了相应的成套技术．对工艺要求的精确匹配是本套电气装置的优势。本文对NGL炉电气装置的配置、功能和作用作了较为详细的介绍,对炉体的控制方式进行了描述,分析了进一步优化和改进的部分,并提出了发展方向。     

浅析废杂铜火法精炼生产低氧光亮铜杆的现状

阐述了国内外利用废杂铜火法精炼生产低氧光亮铜杆的技术装备现状;总结了目前国内该技术存在的问题,并对国内废杂铜制杆技术的前景进行展望。     

紫杂铜再生精炼产业的低碳化绿色化思路

大力发展紫杂铜再生精炼产业是加速实现低碳绿色铜产业的有效途径．针对当前国内紫杂铜再生精炼产业工艺设备能源利用率低、冶炼耗时长及产业集中度低的主要问题,提出技术创新和行业调控的低碳化绿色化思路．     

Production and properties of copper-based compacts

The paper describes the production of copper from fibrous charge, including pressing, hot forging at 900 °C, and subsequent cold deformation along the billet axis. Changes in density, strength, and plasticity are studied. Copper produced with this process meets standard requirements for cast and deformed rods. The process proposed includes fewer operations and requires less energy than the conventional recycling of scrap to obtain copper (remelting, refining, and metal forming).     

Direct electrolytic refining of end-of-life industrial copper waste scraps for production of high purity copper powder

The end-of-life electric cables from both domestic and industrial sources offer an attractive resource of copper metal. In addition, copper wastes generated during fabrication of copper components remains another valuable source of recyclable copper. This work reports a simple, cost-effective and eco-friendly direct electrolytic refining using waste electrical copper wire scrap and copper plate rejects for producing the value added high purity copper powder. Suitable anode support system was applied in which compressed wire scrap or copper plate rejects were held to make anode for electrolytic cell. Electrolysis parameters like current density, acid concentration and copper ion concentration were varied to arrive at optimum condition. Results showed the energy consumption of 1.44 kW h/kg at 89% current efficiency for producing the copper powder, that consisted of >80% of–325 mesh size particles, from waste copper wire anodes. However, slightly lower energy consumption of 1.32 kW h/kg at 91% current efficiency was observed during production of copper powder from copper fabrication rejects. The copper powder thus produced was characterised by chemical analysis, XRD and optical microscope to examine the purity and morphology etc. and found suitable for powder metallurgical applications. Present investigations have established the potential utilisation of copper waste wire scrap and copper plate rejects for the production of value added high purity copper powder.     

SCR铜杆生产线用杂铜生产铜杆的工艺初探

结合多年SCR4500生产实践经验,就SCR4500在杂铜铸造中碰到的一些实际问题进行全面分析,并介绍了针对这些问题在生产设备及工艺上的改进。这些改进措施克服了生产线操作或设计中的一些缺陷,保障了使用杂铜在该生产线上的稳定生产。     

Continuous oxygen steelmaking with copper-, tin-, and zinc-contaminated scrap

In the context of a new zero-gas-emission process for continuous oxygen steelmaking, desorption of copper, tin, and zinc from liquid scrap are modeled. Additive diffusional-resistance concepts show that zinc elimination at atmospheric pressure is entirely straightforward. For copper and tin, a reduced pressure (2.5 mbar) and a relatively high temperature (1780 °C) are preferred. Sulfur must be added above the stoichiometric requirements to volatilize tin sulfide. Copper elimination by physical desorption is completely predictable, but with tin, interfacial chemical kinetics may possibly exert an influence. Based on exclusive transport control and the currently available pumping capacity for vacuum degassing steel, the engineering feasibility of refining continuously melted steel scrap is established. Dimensions are estimated for producing 2 Mtpa of steel with a scrap-to-virgin iron ratio of 3 to 1. Electrical conductive heating is required to raise the liquid-scrap temperature toward the limits imposed by current refractories. With the proposed new technology, copper, tin, and zinc are all recovered as by-product metals. Pretreatment of steel scrap is not advocated, other than simple physical segregation at the source.