石墨炉原子吸收光谱法测定钨粉及三氧化钨中微量铅、镉

本文研究了用酒到石酸络合基体元素钨，在不加基体改进剂的情况下，用标准加入法直接测定钨粉及三氧化钨中微量铅，锌的方法，铅，镉的检出限分别为2．6ng/ml和0.11ng/ml，回收率分别90％－115％和93％－113％之间，相对标准偏差均小于10％。     

铅锌连测在银洞坡金矿综合回收中的应用

本文通过对银洞坡金矿综合回收流程中样品的成份进行了考查，提出了适合选冶流程中样品的络合滴定－铅锌连测的方法，取得了较好的应用效果，方法的回收率铅为９６．８％～１０４．８％，锌为９６．４％～１０３．６％，标准偏差铅为１．７７％，锌为５．２１％。     

从杂铜阳极泥中提取银金的研究

本文提出了用硫酸化焙烧－水溶液氯化－萃取工艺从杂铜阳极泥中回收金银的方法,银直收率95％以上,金直收率99．4％,金银的纯度均达到99．95～99．99％。克服了火法熔炼的烟害和铅害,经济效益和社会效益显著．     

高砷铅阳极泥处理新工艺的研究

为处理高砷铅阳极泥，本研究开发出了浸出－熔炼－真空脱铅－电解新工艺，电解银直收率达８１．３％，比现行工艺高５％～１０％，生产流程也比现行工艺简化，具有较高的经济效益。     

原子吸收测定铜渣中铅量

提出的５％的盐酸介质中，采用火焰原子吸收于２８３．３ｎｍ处测定铜渣中的铅量，方法快速稳定，干扰少，铅在１．０μｇ／ｍｌ－５０μｇ／ｍｌ浓度范围内线性良好。     

高锑粗铅火法精炼碱法脱锑的工艺实践

应用粗铅碱性精练的基本原理，对高锑粗铅进行脱锑，砷，锡的实验研究和工业实践。结果表明，锑，砷，锡的脱除率随时间延长而降低，铅直收率为80％－90％，锑渣率为10．23％－10．64％，锑的脱除率为98％。     

理化之窗

理化之窗ＧＦＡＡＳ法测定血液中的铅ＣｙｎｔｈｉａＰｒｉｅｓｔＢｏｓｎａｋ等研究了测定血液中痕量铅的方法，血样经稀释后直接由自动进样器进样，在平台石墨炉上进行分析测定。样品稀释液由０．２％ＮＨ２Ｈ２ＰＯ４（Ｗ／Ｖ）和０．１％Ｔｒｉｔｏｎ－Ｘ－１００（ｗ...     

EDTA容量法测定本质素渣中的铅

试样用硝酸分解，硫酸沉淀铅与杂质元素分离，在乙酸－乙酸钠缓冲溶液中，以二甲酚橙为指示剂，用BDTA标准溶液直接滴定，测定其含铅量，测定范围：铅≥4．0％。     

锡铅焊料中锡的快速测定

本文根据GB10574－89《碘酸钾滴定法测定锡量》的基本原理,对锡铅焊料中锡的测定方法做了进一步探讨,采用盐酸,三氯化铁溶样,铝片还原、碘酸钾滴定的方法,并对还原装置进行了改装。方法易掌握,快速、准确度高,适宜于各种锡铅焊料中锡的测定。测定范围：5．0－95．0％。     

萃取伏安法测定铁矿样中的铜,铅,镉,锌

提出了一种用差示脉冲阳极溶出发法（ＤＰＡＳＶ）简便、快速、准确测定铁矿样中重金属（铜、铅、镉、锌）方法。用浓盐酸分解试样，用乙醚萃取分离铁，对酸性水提出物进行伏安法测定。４种金属的回收率在９３．５－１０１．０％之间。铜、铅、镉、锌的相对标准偏差分别为０．７２％、０．４８％、０．６４％、０．４７％。在９５％置信度下，临界值／ｔ／表明本法没有系统误差。     

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     

Jiangxi Promotes Jiangxi Copper Corporation To Become The World's Most Competitive Mining Company

<正>According to the latest info from Jiangxi Province State-owned Assets Supervision and Administration Commission,Jiangxi Copper Corporation was approved to become the first pilot enterprise for deepening reform.Contents of the pilot work is"Three Self"(self expansion,self decision-making,self     

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

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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     

Ministry of Industry and Information Technology: No Short Term Solution For Our Country’s Excess Nonferrous Metal Smelting Capacity

【正】According to the Ministry of Industry and Information Technology,the Ministry has released the 2013 Operation Report on China’s Industrial Communication Indu...     

Chinalco Signed Framework Agreement for Strategic Cooperation with Gansu Province

正Recently,Chinalco and Gansu Provincial People’s Government signed"Framework Agreement for Strategic Cooperation on Reform,Restructuring and Transition Development of Chinalco’s Electrolytic Aluminum Enterprises in Gansu",signifying that the strategic cooperation between Chinalco and Gansu Province had made new substantive progress.     

Unavoidable Economic Cycle:30% Of Nonferrous Metal Companies Were Involved In Restructuring

正Owing to continual downturn in real estate and bulk commodity markets,a number of traditional industries in China suffered unfavorable impact in performance.With the progressive disclosure of third quarter report,the no-pleasant-surprise performance of     

Baotou Rare Earth Became the World's Biggest High Performance Magnetic Material Base

正The High Performance Magnetic Material Phase II Project,an industry upgrading project implemented by Inner Mongolia Baotou IronSteel Rare Earth(Group)Hi-tech Co.,Ltd,recently basically finished equipment commissioning,signifying that the enterprise had developed the production capacity of15000 t/a Nd-Fe-B strip casting alloy and 5000t/a Nd-Fe-B magnet,thus becoming the world’s     

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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