锌,二氧化锰分步电解新工艺

采用硫化锌精矿、软锰矿同时浸出，硫酸锌、硫酸锰混合液经净化后，先高温低电流密度电解二氧化锰；后低温高电流密度电解锌的电解制度，实现了锌、二氧化锰的分步提取。     

分时供电长周期锌电积实验经济性探讨

考虑到大工业用电分时计价,通过控制锌电积生产在用电峰时段、谷时段和平时段采用不同的电流密度组合,进行长周期锌电积试验,考察了分时供电对锌电积阴极锌质量、电流效率、直流电单耗及电费的影响。研究结果与工业生产实际进行对比分析,对于年产12万t锌锭的生产企业,在锌电积生产过程将节约电费支出上千万元,为锌冶炼企业带来较好的经济效益。     

液态阴极熔盐电解法制备锌—稀土中间合金的研究

采用液态锌作阴极的熔盐电解法,从氯化钠,氯化钾-氯化稀土熔盐电解质中,电解制备了锌-稀土中间合金。研究了电解质组成,电解温度,电流密度及搅拌等因素对电流效率的影响,在最佳电解工艺条件下,其电流密度84％。X射线衍射分析表明,稀土在锌-稀土中间合金中以ReZn_(11)形式存在。     

锌电积各种因素对阳极析出MnO2电流效率的影响

通过对锌积电解极过程反应机理的研究,测定了温度、锰离子浓度、电流密度、酸度、阳极含银量及不同阳极形状对MnO2析出的影响,结果表明：电流密度锰离子浓度是主要影响因素。锌电解过程采用0．7％Pb-Ag阳极,电流密度500A／m∧2,温度38℃,控制Mn∧2＋离子浓度为3g/L,阳极MnO2析出电流效率为1％－2％之间,方能产出产出高质量的电解锌。     

硬锌处理新工艺的研究

根据锌同硬锌中各有价金属的标准电极电位的差异，首次提出并试验在氯盐体系中用电解法分离硬锌中的锌同有价金属。试验研究了电解温度、电流密度、电解液组成等对硬锌电解的影响。结果表明：锗、银、铜、锑均９９％以上富集进阳极泥，铟、锡、铅也有９０％以上进阳极泥，有价金属富集３～３．５倍；电解锌含锌达９９．１％以上；直流电耗小于８００ｋｗ·ｈ／ｔ·Ｚｎ，电效大于９８％。     

高电流密度铅电解的试验研究

文章介绍了在试验室进行了电流密度铅电解的试验情况，通过试验找到了一个比较适合高电流密度铅电解的技术操作条件，为现场进行高电流密度铅电解生产提供了参考依据。     

高纯银的制备工艺研究

针对传统的银电解工艺在电解过程当中产生杂质铜难以去除和在高电流密度下银电解工艺需解决等问题,结合无铜离子在银电解过程中的作用机制和高电流密度下银电解特点研发出一种新型的电解法生产高纯银,即无铜离子高电流密度银电解集成技术,试验结果表明:电解体系中无铜离子,通过添加KNO3和K2SO4试剂,并采用高电流密度进行电解,可以明显改善电解液的导电性能和银粉的析出性能。     

锌氨配合体系电积锌研究

研究了锌氨配合体系电积锌新工艺,考察了温度,电流密度对电积过程的影响,以及电解废液中最低锌浓度对电流效率的影响,试验结果表明,温度和电流密度对槽电压影响较大,而对电流效率几乎没有影响;电解废液中最低锌离子浓度只要不低于10．0g/L,电流效率仍大于90％,在最佳电积条件下,槽电压为2．94V,电流效率为96．35％,生产每吨电锌耗氨0．206t,耗电2502kWh。该法槽电压低,电流效率高,能耗低,电解废液中锌浓度低,电锌纯度高。     

一种铜箔新技术

上海金宝铜箔有限公司研制出电解-表面处理一体化技术，可用于批量生产18～35μm电解铜箔。与传统的生产技术相比，新技术突破了超薄电解铜箔只能用低电流密度生产的极限，采用高电流密度；工艺方面，在电解液中采用混合添加剂，解决了电解与表面处理同步运行技术，使产品性能上一个档次。     

电积法制备锌粉工艺研究

研究了从硫酸锌和硫酸铵混合电解液中电积锌,考察了电流密度、锌离子质量浓度和不同电解添加剂对锌粉形貌和电流效率的影响。结果表明:高电流密度和低锌离子质量浓度有助于细化锌粉,但易导致电流效率下降;合理添加十二烷基硫酸钠会得到球状锌粉,而添加乙醇则会得到枝状锌粉。     

铜冶炼厂安全设施设计浅析

铜冶炼厂从原辅材料到产品的贮存、使用过程均存在着各种安全因素,铜冶炼厂的安全生产和劳动者的人身安全及周边的环境安全是此类企业工程设计的重要环节。在对铜冶炼厂各工艺过程及设备的危险有害因素进行分析筛选的基础上,简要说明了现阶段国内大型铜冶炼厂设计采用的主要安全防范设施,为铜冶炼厂及类似企业的安全设计提供参考。     

锌电解的两种导电方式对比

结合生产实践,对锌电解阴阳极板的两种导电方式(夹接方式和搭接方式)进行了对比,提出了搭接方式的改进办法,指出了搭接方式是锌电解理想的导电方式。     

利用固体潮压电效应和自然电位测量勘查隐伏矿床的新方法

介绍一个原始创新的地球物理勘探新方法（国家发明专利）。该方法利用压电效应的原理,将固体潮所产生的压电效应和自然电位测量结合起来,是直接勘探石英脉型金矿和其他矿床（有压电效应）的全新方法。其实施步骤如下：a）在勘查区域按网格布设不极化电极,埋植深度及要求与自然电位法勘查类似。b）对这些布设的电极进行二次电位测量：一次是在固体潮高潮时测量,另一次是在固体潮低潮时测量。根据固体潮产生的压电效应,在有石英脉型金矿（或方铅矿、铅锌矿、黄铁矿、铜镍硫化物矿及多种伟晶岩等）的地段将出现二次测量的明显差异,即高固体潮时和低固体潮时测量的电位差将有明显的异常。如果在该地段处没有预期的这些类型的矿床,高固体潮时和低固体潮时测量的电位差将不会有明显的异常。     

A microscopy study of lead sinter

Samples of up-draft sinters produced at three different Missouri lead smelters were studied, to determine the chemical phases present, as a first step toward a more complete understanding of the lead blast furnace operation. The sinters seemed to be basically similar, and all the results reported are from samples from one smelter (Herculaneum smelter, St. Joe Minerals). Analytical tools used included the electron microprobe and scanning electron microscope with a non-dispersive X-ray spectrometer attachment Major phases that were positively identified are metallic lead, lead sulfide and zinc ferrite. The predominant lead phase was tentatively identified as a lead oxide-silicate compound. Other compounds probably present are calcium, iron, zinc-silicates or some combination of calcium, iron or zinc with silica. Contrary to the results of other investigators no lead oxide or basic lead sulfate compounds were identified. It appears that the majority of the lead is present in the sinter as a lead oxide-silicate phase.     

铜冶炼含砷固体废物的处置现状与展望

随着国内经济的高速发展,从采矿、选矿、冶炼过程中富集到环境中的砷量急剧增加,高砷固废的处置总的原则是"资源化、无害化、减量化",最佳方向是转变成产品,新型药品、有机化,环保建材、高纯砷金属、高端电导体材料等是发展的新方向。     

新型酸雾抑制剂FC-1100的应用研究

介绍一种新型酸雾抑制剂FC-1100,通过该试剂在我国某湿法炼铜厂的试验结果表明:FC-1100酸雾抑制剂可以有效地降低电解液的表面张力,使电解时阳极析出的氧气能顺利溢出,不把硫酸酸雾带出到空气中,达到降低空气中硫酸酸雾的效果。     

锌电解峰、谷、平的合理利用

叙述了某厂利用峰、谷、平电价的差异,合理安排生产和取得的经济效益的实例,提出了按峰、谷、平操作应该具备的条件和采取的措施.     

A laboratory study of the extraction of alumina of smelter grade from China clay micaceous residues by a nitric acid route

This programme of work was the initial work carried out to evaluate some U.K. indigenous alumina containing materials for the extraction and production of alumina suitable for use in aluminium smelters in place of traditional Bayer alumina from bauxite.The micaceous residue from the china clay industry was selected as the most attractive material based on its high aluminium content and low iron content compared with other available materials.Leaching studies with diluted nitric acid were carried out on laboratory bench scale using samples of micaceous residue and the reference minerals kaolinite and muscovite mica. Precalcination of the feed minerals was necessary to maximise the extractability of the “available” alumina values. It was shown that between 60 and 86% of the alumina present could be extracted from the types of micaceous residues evaluated.The initial alumina products contained higher levels of iron and potassium as impurities than could be accepted at smelters using current smelter alumina specifications.Iron removal was affected by treatment of pregnant leach liquors by solvent extraction with D2EHPA in kerosene and potassium removal was carried out by leaching the calcined alumina product with hot water.This work has shown that such a treatment route could form the basis of production of smelter-grade alumina from the micaceous residues.     

分时电流供电对长周期锌电积的影响研究

通过控制锌电积的电流密度按用电峰时段300A/m2、谷时段600A/m2及平时段480A/m2进行长周期锌电积试验,考察了分时供电对锌电积阴极锌质量、电流效率、直流电单耗及电费的影响,并与工业生产实际进行对比分析。结果表明,对于年产12万t锌锭的企业,锌电积生产每年节约电费约2 100万元。     

Utilisation of metallurgical sludge by multi-layer sintering

Metallurgical wastes landfills in Poland significantly grew during last four decades. Landfilled wastes are characterised by iron content at range 30–50% and zinc content about 2–3%. Therefore wastes are not interesting for the zinc smelter, on the other hand, even such low zinc content in ironmaking burden causes problem with a shaft furnace operation. So, the wastes are valuable for ironmaking due to the high iron content, provided that zinc will be removed from them. The article describes the general ways of dealing with zinc containing metallurgical wastes. In detail, the semi-industrial research conducted on sinter pot set of Stanislaw Staszic Institute for Ferrous Metallurgy is presented. The study determined the conditions under which obtained three benefits: landfilled sludge utilisation, raw materials substitution and zinc recovery.