锑电积贫液中锑回收试验研究

针对甘肃某公司锑电积贫液含锑较高,酸化沉锑渣锑品位高导致其与低品位矿配矿后碱浸锑回收率低的问题,开展了酸化沉锑—冷却结晶—碱浸—电积试验研究。通过单因素试验考察了pH、反应温度、搅拌速度和冷却结晶等对酸化沉锑效果的影响,结果表明：在酸化沉锑pH=5,冷却结晶温度10℃,碱浸矿浆浓度20%、Na₂S质量浓度85 g/L、NaOH质量浓度40 g/L、碱浸时间1 h、电积NaOH质量浓度70 g/L、电流4.80 A、阴极与阳极面积比为5.8∶1、电积时间50 h的条件下,电积试验锑回收率为82.29%,阴极锑品位为92.72%,提高了资源利用率。     

锑金矿旋流电解试验

锑金矿先碱浸获得含锑溶液,含锑溶液经旋流电解析出阴极锑。与传统平板锑电解相比,旋流电解法可用高电流密度、环境友好、电流效率高,并且能处理低品位矿。对于含锑6.59g/L溶液,在电流密度254.8A/m2、循环流量2.5 m3/h、时间6h的条件下,阴极析锑电流效率为43.80%,吨锑电耗6 157kWh。对于含锑23.14g/L溶液,在电流密度647.3A/m2、循环流量2.5m3/h、时间5h的条件下,阴极析锑电流效率为72.2%,吨锑电耗4 372kWh。     

碱性硫化钠浸出含锑金精矿的试验与工业实践

采用碱性硫化钠浸出—无隔膜电积的方法回收含锑金精矿中的锑,在小型试验基础上根据生产场地的实际情况进行了工业实践。通过对电积过程工艺参数优化,锑综合浸出率为96.72%,回收阴极锑纯度96.36%,贫液含锑5.54g/L,综合电流效率63.84%,吨锑氢氧化钠消耗量617.2kg。     

高铅锑合金电解提锑工艺生产试验

铅冶炼企业在处理较复杂成分原料时,每年会产出一定规模的铅锑合金,当前并没有成熟的处理工艺。广西冶金研究院提出将铅锑合金电解直接生产精锑的工艺路线,完成了工业规模的生产试验。铅锑合金通过电解提锑可得到致密、平整的阴极锑,阴极电流效率99.74%,直流电耗266.21 k Wh/t电锑,锑的直收率为43.82%,回收率为98.76%,可实现较好的经济效益。     

H_2SO_4-NH_4F-SbF_3粗锑电解精炼体系研究

采用循环伏安法和线性扫描技术等电化学研究方法,系统研究了电解液体系中各阴阳离子对锑电沉积过程的影响。通过测定Sb3+、NH+4、F-、SO2-4及草酸等组分不同质量浓度下体系的循环伏安曲线、稳态极化曲线及塔菲尔曲线,分析了各离子在电解过程中的电化学行为及作用,确定了H2SO4-NH4F-SbF3电解液体系合适的成分为Sb3+90~120 g/L、NH+450 g/L、F-80 g/L、H2SO4360 g/L、H2C2O44~10 g/L。在此电解液体系下进行了粗锑的电解精炼试验,阴极锑纯度为99.943 6%,达到国标1号精锑标准,阴极电流效率为97.60%。     

从含锑和羟基乙基盐—丁炔—2—二醇—1,4（EAA）的硫酸盐电解溶液中电解提取锌

对从含锑离子和一种防止锌复溶的有机抑制上硫酸溶液中电解沉积锌的实始阶段进行周期性的伏安测量进行了研究。通过研究发现当匀电积在阴极还没有从阳极空间分离以前，电积锌的复溶在加入锑离子的情况下将更加强 化。一种称为羟基乙基盐丁炔－２－二醇－１，４（ＥＡＡ）的有机添加剂可以抑制上锌复溶而修复锌特有的表面开头。     

含砷锑金精矿冶炼过程中水污染源及治理措施简析

对含砷、锑成分高的难处理金精矿,采用湿法碱性浸出锑,含锑富液电积生产阴极锑,分离锑后的浸渣焙烧+氰化浸出回收金银,最大限度的回收金、银和锑等有价金属.冶炼过程产生含酸碱及重金属废水和各种贫液,车间存在大量在线液体.采用预处理回收有价金属,污水站采用石灰-铁盐法处理生产废水,将生产废水处理后全部回用于工艺生产,解决了难处...     

低品位硫化锑矿湿法炼锑探索试验研究

低品硫化锑矿经湿法碱性处理,锑的浸出率可达到98.48%,渣含锑0.50%。碱浸液通过隔膜电积处理,溶液中的锑富集成阴极锑,含锑达到90%以上。电积废液中再生的硫化钠用于再次浸出,实现了原料的综合利用,工艺过程安全环保。     

一种辉锑矿湿法清洁冶金新工艺

介绍了一种辉锑矿湿法清洁冶金新工艺。新工艺包括浸出、净化、隔膜电积等主要工序。考察了隔膜电解工序温度、添加剂种类及浓度、[Sb3+]和电流密度对沉积锑的形貌和质量的影响。优化试验结果表明:在温度45℃,[Sb3+]=70 g/L、[H+]=4 mol/L、[Cl-]=5.8 mol/L、[NaCl]=40 g/L、电流密度250 A/m2条件下,可获得表面形貌良好的阴极锑,阴极电流效率99%,吨锑电耗约1 200 kWh。以隔膜电积阳极室生成的SbCl5为氧化剂,在温度85℃、[H+]=3.5 mol/L、液固体积质量比8∶1、氧化剂过量系数为理论量的1.1倍、浸出时间1.5 h条件下对辉锑矿进行氧化浸出,锑浸出率达99.5%。     

锌电积锑“烧板”及扭转

１９９３年４月，我厂发生锌电积大面积“烧板”的重大事故，通过分析，确认事故是由于新液含锑高所引起的，我厂迅速采取了多项技术措施，终于恢复了锌系统的正常生产，这篇文章探讨了这次事故的原因，分析了锑在电解过程中的循环机理，研究认为：溶液中的锑离子在阴极上放电后，所形成的锑化氢气体被吸附在阴极表面上，这种气态绝缘物将阻止锌在该处继续沉积；以后，锑化氢又被工业电解液中经常存在那些具有很强氧化能力的Ｆｅ＾３     

熔炼次数对M17返回料合金成分、组织和性能的影响

实验结果表明,M17铸造高温合金(%:0.16C、8.79Cr、5.79A1、4.93Ti、3.29Mo、15.20Co、0.78V、0.015B、0.073Zr、0.002S、0.001P、0.001 1O、0.001 0N)经25 kg真空感应炉返回重熔后,Si含量随重熔次数的增加而略有增加,合金中主要元素和其它杂质元素S、P、H的含量变化不大,而氧、氮略有增加;合金中初生碳化物由新合金中的草书体逐渐向返回合金块状转变,初生碳化物的遗传性堵塞合金凝固时的补缩通道,使返回料合金的疏松倾向增大,高温塑性下降较大。     

China's Major Non-ferrous Metals Imports & Exports

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Zinc Production by Province in 2014

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80% of Chinese Firms Purchasing Overseas Mines Ended up in the Red

<正>Minmetals Resources acquired the world’s largest copper mine under construction for USD5.85 billion.One after another,listed companies Jien Nickle,China Molybdenum and Chihong Zinc and Germanium raised money to get involved in overseas mining projects…SOEs and private enterprises are engaged in a frenzy of overseas mine purchasing.A reporter with Economic     

Copper Processing Profit Dropped Sharply,Copper Consumption Will Face Impact in the Second Half of the Year

正Judging from China’s copper consumption field,the biggest consumption unit is electric power,which accounts for 47%of total consumption;it is followed by light industry sector,including household electrical appliance,machinery,durable goods and hardware etc,which accounts for 22%of total consumption;followed by transportation field,     

Central Geological Prospecting Fund Newly Added 16.47 Million Tonnes of Bauxite in 2013

正In 2013,the Central Geological Prospecting Fund(CGPF)Project newly discovered 15 ore fields,including 3 large above ore fields,and 5medium sized ore fields.The reporter learned from the recently published"Annual Report of Central Geological Prospecting Fund Project(2013)"that,from 2006 to 2013 the CGPF     

Manufacturers of Copper Tube for Central Air Conditioner Use Face Mounting Pressure in the Final Quarter of the Year

正This year,the investment growth rate of real estate industry continued to slow down,sold area of commercial housing also dropped significantly,which brought huge pressure to the domestic air conditioning manufactures.In the first half of the year,by relying on high growth in national financial expenditure,along with investment in public infrastructure     

Xinjiang Ranks No.1 in Production of Primary Aluminum in China

正Kang Yi,Honorary Chairman of China Nonferrous Metals Industry Association,said recently at the Forum on Development of the Non-ferrous Metals Industry in Central and Western China held in Zhengzhou that,as more and more electrolytic aluminum factories in Xinjiang came into operation,the electrolytic aluminum output of Xinjiang had reached2,275,000 tons in the first 7 months this year,     

Shenhuo Coal Industry and Electricity Power Completed800,000 t/a Aluminum Project in Xinjiang

正"Xinjiang project has been completed according to schedule,but total completion and total start of production are two different concepts,after completion it still needs a gradual process of reaching production target."On the morning of November 3,Shenhuo Coal Industry and Electricity Power told investors the above statement on the investor interaction platform.     

Guangdong Metal Transaction Center has Become the Second Largest Precious Metal Transaction Platform Nationwide

正The reporter learned from Guangdong Province Precious Metal Transaction Center that in 2013the Center maintained healthy development momentum,and had become the second largest precious metal transaction platform in China in terms of market size;currently Guangdong is quickening steps of financial innovation for the Center,aiming to build a transaction center with international core competitiveness.