从铅阳极泥中湿法提取铋、锑试验研究

介绍了以三氯化铁作氧化剂,氯化钠提供氯离子,用盐酸从高温氧化后的铅阳极泥中浸出铋、锑,考察了氧化温度、盐酸浓度、浸出温度、反应时间、液固体积质量比、三氯化铁和氯化钠用量对铋、锑浸出率的影响。试验结果表明:铅阳极泥预处理对铋、锑浸出率影响较大;铅阳极泥粉磨过200目筛,在氧化温度220℃、盐酸浓度5mol/L、液固体积质量比5∶1、反应温度80℃、反应时间3h、三氯化铁质量浓度10g/L、氯化钠质量浓度45g/L条件下,铋、锑浸出率分别为99.44%和99.69%,浸出效果较好。     

脱砷铅阳极泥控电位氯化浸出试验研究

采用控电位氯化浸出脱砷铅阳极泥,重点考察了氯化钠用量、初始酸度、液固比、浸出温度、浸出时间对脱铋率和脱铜率的影响。结果表明,在氯化钠用量为理论量的1.6倍、盐酸浓度1.2mol/L、液固比3∶1、50℃浸出2h的条件下,铋和铜的浸出率分别达到90%和80%以上。     

湿法提取铅阳极泥中的铋锑技术研究

正介绍了湿法提取铅阳极泥中铋锑的技术研究,考察了铅阳极泥的氧化温度、盐酸浓度、反应温度、反应时间、液固比、三氯化铁用量和氯化钠用量对铋锑浸出率的影响。实验结果表明,铅阳极泥预处理对铋锑浸出率影响较大,在铅阳极泥经粉磨过-200目筛后,当氧化温度为220℃,盐酸浓度为5mol/l,液固比为5∶1,反应温度为80℃,反应时间为3h,三氯化铁浓度为10g/l,氯化钠浓度为45g/l时,铋锑的浸出率分别达到99.44%和99.69%。     

从铜阳极泥分银渣中回收铋和锑

采用硫酸与氯化钠的混合溶液浸出铜阳极泥卡尔多炉分银渣。结果表明,铋、锑被浸出进入溶液,铅转化为硫酸铅留在浸出渣中,从而实现铅与锑、铋的分离。在硫酸浓度2.5mol/L、氯化钠浓度125g/L、液固比4∶1、温度95℃、浸出时间4h的条件下,铋、锑、铅、银的浸出率分别为98.67%、91.17%、0.56%和0.76%,金几乎不被浸出。     

铅阳极泥中有价金属的综合回收

采用盐酸浸出铅阳极泥富集金银,考察盐酸浓度、反应温度、液固比、反应时间对盐酸浸出过程中铜、锑、铋、金、银的影响。研究结果表明,浸盐酸浓度为3 mol/L、液固比为8∶1、反应温度为85℃、反应时间为4 h时,铜、锑、铋的浸出率分别为98%、99. 5%、99. 6%;浸出后的铅阳极泥与浸出前相比,金、银富集2倍以上。     

铜阳极泥浮选尾矿铅、锑、铋定向分离试验

采用工业食盐浸出铜阳极泥浮选尾矿中的铅,硫酸和工业食盐浸出尾矿中的锑、铋,考察液固比、温度、时间、NaCl浓度、H₂SO₄浓度对浸出过程中铅、锑、铋浸出率的影响.研究结果表明:液固比（质量比,下同）为5:1,浸出温度为80 ℃,浸出时间为2 h,NaCl浓度为6 mol/L时,铅、锑、铋的浸出率分别为72.2 %、7.83 %和10.77 %.液固比为5:1,浸出温度为60 ℃,浸出时间为2 h,H₂SO₄浓度为3 mol/L时,锑、铋的浸出率分别为74.97 %和84.27 %.锑、铋水解回收后,水解液可循环利用.      

锌冶炼铅银渣湿法浸出工艺研究

在分析湿法炼锌铅银渣的主要成分与化学物相的基础上,考察了温度、浸出时间、氯酸钠浓度、酸度等对铅银渣中铅银含量及浸出率的影响,确定了氯化浸出最优工艺条件为:氯化钠浓度300g/L、氯化钙浓度50g/L、初始盐酸0.4mol/L、浸出温度85℃、浸出时间2.5h、液固比8,在该条件下铅银渣中铅、银的浸出率分别可达94.43%和91.48%,渣中铅含量为0.9%,银含量84.4g/t。     

铅铋合金渣中铅的乙酸浸出优选试验

提出一种从铅铋合金渣中浸出铅的工艺,采用优选试验设计,按乙酸浓度、液固比、浸出时间、浸出温度的顺序依次进行单因素考察,确定铅元素浸出各个工艺因素的最优参数。在乙酸浓度为200g/L,液固比为6:1,浸出时间120min,浸出温度50℃的最优化工艺条件下,铅的浸出率达到93.79%。     

用盐酸从锌烟尘中浸出铅锌试验研究

研究了用盐酸从炼铅厂烟化段产出的锌烟尘中浸出分离铅和锌,考察了液固体积质量比、盐酸浓度、浸出温度和浸出时间对铅、锌浸出率的影响,确定了最佳浸出参数。试验结果表明:在浸出温度80℃、液固体积质量比8∶1、盐酸浓度6mol/L最佳条件下,铅和锌的浸出率均大于90%。     

分银渣综合回收技术研究

分银渣中主要矿物为硅酸铅,伴生的铋锑等则以氧化物形式包裹于硅酸盐中。为高效回收有价金属,须破坏硅酸盐结构,使稀有元素裸露,以便回收处理。采用盐酸与添加剂混合溶液对分银渣进行选择性浸出,实现铅与铋、锑等的分离。在盐酸浓度2.5mol/L、氯化锌浓度100g/L、液固比4∶1、温度90℃、浸出时间2h的条件下,铋、锑浸出率分别为99%和95%以上。     

Journal of Rare Earths Contents List of Vol.32(2014)

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Introducing Two Central Enterprises to Integrate Rare Earth Industry,Shandong Rare Earth Group Breaks Surface

正With the signing of"Letter of intention for Propelling Integration of Shandong Rare Earth Enterprises"between Shandong Province Commission Of Economy and Informatization,China IronSteel Research Institute Group("China Steel Institute"),and China Rare MetalsRare Earth Co.,Ltd("China Rare Earth"),the"Shandong Rare Earth Group"jointly set up by the 3 units thus broke surface.On August 9,reporters of the China Economic Herald learned from Shandong Province     

Aluminium Production by Province or City in 2014

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Refined Copper Production by Province or City in 2014

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Aluminium Production by Province or City in 2014

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China is Planning to Raise rare Earth Resource Tax Again

正In the face of the current situation of the lost WTO dispute on rare earth,and cancellation of export tariff for partial rare earth products,efforts of regulation and integration on rare earth by the state government will again be tightened.Reporters of the Economic Information Daily recently learned from authoritative sources that relevant ministries are     

Fabricated Copper Production by Province or City in 2014

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Refined Copper Production by Province or City in 2014

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Chinalco Signed Framework Agreement for Strategic Cooperation with Harbin Municipal Government

正Last month,Chinalco signed framework agreement for strategic cooperation with Harbin Municipal Government in Harbin Xiong Weiping,Chairman of Chinalco,said that based on the strategic deployment to build world top-class mining company with the highest growth potential,Chinalco was now concentrating all efforts on making strategic transition and structural adjustment,strategic cooperation with the local governments where     

Contributions to Baosteel Technical Research wanted

正Baosteel Technical Research,a quarterly journal,which is issued domestically and abroad,is run and sponsored by Baosteel Group Corporation.Baosteel Technical Research mainly reports the achievements in technological innovation,academic research,new product development and industrial equipment improvement by Baosteel.It will continue to follow up on hot topics and serve the company’s technological development and progress.Its readers include experts in