杂铜的火法精炼

本文介绍了杂铜的精炼过程、杂质脱除的难易程度以及保证杂铜精炼产物－阳极板质量的工艺技术条件。     

火法炼铜技术综述

目前火法熔炼技术发展迅速并得到广泛的应用,在铜工业生产中已明确提出"清洁生产"的目标。环境意识要求清洁的生产工艺,即工艺过程中极少排放废物,对火法炼铜技术的进一步完善提出了更高的要求。本文叙述了目前世界火法炼铜的主要工艺、工业生产实例及进展情况,对现代铜冶金新方法-闪速熔炼、熔池熔炼以及其它熔炼技术作了较为详细的介绍,并指出了铜火法冶炼存在的问题及今后的主要技术发展方向。     

火法炼铜技术进展

火法炼铜技术进展天津有色金属研究所戈学忠我国目前已跻身世界有色金届大国的行列，这是我国有色金属工业发展中一个十分可喜的成果。在有色金属工业建设中，国家把铜工业的发展一直放在十分重要的地位。自建国以来，已陆续新建和扩建了沈阳冶炼厂、上海冶炼厂、昆明冶炼...     

我国火法炼铜清洁生产现状及促进措施探讨

分析了我国火法炼铜清洁生产现状,探讨了促进清洁生产的措施。提出因厂制宜改进生产,配套必要的环保设施,提高资源综合利用水平,实施清洁生产,彻底解决该行业的环保问题。     

基于生命周期评价法的铜尾矿资源化利用的环境效益分析

以铜尾矿为研究对象,运用生命周期评价(LCA)法对铜尾矿堆存以及3种铜尾矿资源化利用方法的环境影响进行比较.结果表明,处理1t的铜尾矿,方案1:堆存,对环境的主要影响为生态毒性(ET:7.05×10-1)和人体毒性(HT:1.467×10-7);方案2:铜尾矿代替水泥熟料中的黏土,主要环境影响类型初级能源消耗(PED)...     

高铅锑铜料火法精炼的工艺改进

针对５０ｔ反射炉在处理高铅锑铜料期间出现的作业时间长,整体技术经济指标下降的现象,分析了原因,确定了简化工艺、强化操作的解决方法。     

智利铜火法精炼工艺的改进

与铜的熔炼及吹炼工艺相反，生产阳极铜或火法精炼铜的火法精炼工艺直到８０年代中期仍然没有什么明显的改观。其后对该工艺进行了一些改进，旨在使其更有效、更适用。本文叙述改进铜火法精炼工艺氧化及还原过程的研究成果。重点介绍通过喷枪或风口向熔融铜喷入熔剂以脱除砷和锑。此外还论述脱除杂质及还原铜的热力学及动力学。     

含铜金矿生物浸出渣铜品位对氰化提金的影响

对紫金山低品位含铜金矿进行生物浸出—介质转换—氰化提金摇瓶试验,考察不同生物浸出周期铜的浸出率以及生物浸出渣中铜的品位对后续氰化提金的影响。结果表明,生物浸出12d,含铜金矿中73%的铜溶出,浸出渣铜品位降至0.096%。生物浸出渣铜品位对氰化浸出有显著影响,随着铜品位的升高,氰化钠耗量、氰化过程铜的浸出率以及贵液铜浓度均升高。为降低铜对氰化提金的影响,生物浸出渣中铜的品位应降至0.1%以下。     

铜冶金机械设备设计改造装配技术及使用周期研究

由于传统铜冶金机械设备长时间处于工作状态,其主要部件熔炼炉很容易出现熔体喷溅的现象导致使用周期短。针对这一问题,进行铜冶金机械设备设计改造装配技术及使用周期研究。     

The nature and source of copper smelter particulate emissions

Particles from the inlet, outlet, and bin of electrostatic precipitators (ESPs) operating on copper reverberatory furnace and converter off-gas streams were characterized by their chemical, mineral-ogical, morphological, and electrical properties. Reverberatory furnace particles, nominally less than 10 microns in size, are believed to be formed by condensation of PbSO₄ and ZnSO₄ onto oxide particles (Fe₃O₄, Cu₂O, SiO₂) originating in the slag or concentrate. The very fine particles from the dual-nature converter dust were similar in characteristics and probably in origin to the reverberatory furnace particles. The coarse (up to 500 microns) slag (Fe₃O₄, SiO₂) and matte (Cu₂S, Cu) particles in the converter samples probably arose from entrainment by flowing or bubbling gases. The properties of all three sample portions varied depending on the source of the sample and the effectiveness of electrostatic precipitation. University of Arizona     

黄金冶炼厂中萃取法提铜研究

本文针对黄金冶炼厂中萃取法提铜,通过实验研究,探讨萃取剂和稀释剂的选择,并提出萃取法提铜的主要思路,最后分析了杂质对萃取提铜需要。分析结果表明,在黄金冶炼厂,通过萃取法在废水、废渣中可以提出大量的铜,既有助于提升黄金冶炼厂的经济效益,也可以降低对周围生态环境造成的污染,值得高度重视。     

祥光铜冶炼厂冰铜研磨机的安装

介绍了冰铜研磨机的安装工序,详细叙述了施工要点、精度要求、使用的器具和人员安排等.     

祥光铜冶炼厂冰铜研磨机的安装

介绍了冰铜研磨机的安装工序,详细叙述了施工要点、精度要求、使用的器具和人员安排等。     

Mathematical model of metallurgical thermal processes and application

There are lots of physical changes and chemical reactions in the processes of iron and steel making, these processes are quite complex in the aspect of heat transfer.The processes of iron and steel making can be approximately divided into three kinds.The first kinds are the processes of fusion metallurgy which involve enormous chemical reactions,such as blast furnace,converter,electric furnace and coke oven.The second kinds are the processes of heating and cooling which are mainly the physical changes,such as walking-beam reheating furnace,annular heating furnace and car-type furnace.The third kinds are the processes of heat treatment which mainly adjust metallurgical structure of metal,such as roller hearth heat treatment furnace, strip continuous heat treatment vertical/horizontal furnace and HPH bell-type annealing furnace.Every process can only be finished in particular thermal equipment.And all the physical and chemical processes mentioned above must obey first principles of engineering thermodynamics,heat & mass transfer,hydromechanics, combustion,metallurgy physical chemistry etc,and which can be summarized as principle of heat transfer,mass transfer,momentum transfer and chemistry reaction.In this paper,based on first principle of heat and mass transfer in iron and steel making processes,a series of mathematical models of thermal equipments and processes are presented.Such as the model of hot-blast stoves,coke oven,CDQ-boiler system,sintering, reheating furnace,soaking furnace,annular heating furnace,roller hearth heat treatment furnace,strip continuous heat treatment vertical/horizontal furnace,HPH bell-type annealing furnace,control cooling of medium plate,burner,heat exchanger and regenerative burner etc.The on-line application of the model is based on experimental certification of the mathematical model.And finally the computer optimization system of metallurgical thermal process is obtained.     

Thermodynamics of metallurgical processes in manganese-based melts

The theory of quasi-regular solutions may be used to convert the molar interaction parameters from one type of alloy to another. Hence, the thermodynamic characteristics of manganese alloys may be estimated from data for iron alloys. On that basis, the molar and mass interaction parameters of elements in manganese melts may be calculated, as well as the heats of solution and activity coefficients of the elements and the change in Gibbs energy on reduction, desulfurization, denitrogenation, and reductive dephosphorization of manganese and also in the refining of manganese by chlorides and fluorides. The possibility of removing impurities from manganese is assessed.