The main raw materials of Se extraction are introduced.The latest development and application of selenium extraction both at home and abroad is elaborated.The characteristics of Se pyrometallurgy and hydrometallurgy are analyzed.Compared with pyrometallurgy,Se hydrometallurgy has the advantages of low energy consumption,clean and environmental-friendly production and low operating cost.Therefore,hydrometallurgical process will gradually replace the pyrometallurgical process as the dominant process for Se extraction.

The optimum adsorption conditions of vanadium（Ⅳ） were determined by static and dynamic adsorption experiments.The results from static adsorption experiment show that the static saturated adsorption capacity of vanadium（Ⅳ） is 203.67 mg/g at pH2.0,resin amount 1 g and temperature 60 ℃.The results from dynamic adsorption experiment show that low flow rate and relatively high temperature are good for resin adsorption of vanadium（Ⅳ）.

Zirconium metal was prepared by direct electro-deoxidization of solid ZrO2 cathode plate doped with different amount of graphite powder.Composition and morphology of the cathode were studied after sintering and direct electro-deoxidization.Effects of graphite powder doping on electrode-oxidization reaction were investigated.The results show that graphite powder doping can increase the oxygen vacancy in the sintered samples,improve the reactivity and zirconium metal recovery,and reduce energy consumption.

Alkali solution-hydrolysis process was applied to produce commercial beryllium oxide with high-F beryllium ore powder as the raw material.Qualified commercial beryllium oxide can be obtained by controlling the technical conditions in the operations like precipitation,alkali solution and hydrolysis to improve the quality and recovery of industrial beryllium oxide.

由长沙有色冶金设计研究院有限公司与豫光金铅股份有限公司联合研究开发的铅高效清洁冶金和资源循环利用关键技术及其产业化项目,在2010年获中国有色金属工业科学技术奖一等奖的基础上,近日再获国家科学技术进步二等奖。

由中国有色金属学会和长沙有色冶金设计研究院有限公司共同主办的《稀有金属与硬质合金》,经新一轮遴选已入编《中文核心期刊要目总览》2011年版（即第六版）冶金工业类之核心期刊，

The crystal structure and main preparation methods of LiNi0.5Mn1.5O4 spinel material are introduced.The methods to improve the charge and discharge rate and electrochemical performance of the material are reviewed including nano-sized synthesis,elemental doping,surface modification and so on.The future application of the material in the future advanced lithium ion battery is also pointed out.

C/Cu-Cr composite material was prepared by hot-pressing sintering with Cu-Cr alloy powders obtained from mechanical alloying.The microstructure and properties of the composite material were emphatically analyzed.The results show that with Cr content increasing,both relative density and conductivity of the composite material gradually decrease,and its hardness increases,and bending strength increases first and then decreases.When Cr content is 1%,the bending strength reaches a maximum.The composite material with 1%Cr and 2%C has relative density of 98.82%,conductivity of 85.57%IACS,hardness of HBS 69.34,and bending strength of 330 MPa.Compared with conventional cold-pressing sintering,hot-pressing sintering can obtain a composite material of finer crystal grain,more uniform reinforcing phase distribution and more excellent comprehensive performance.

β-Ni（OH）2 petal-shaped sphere and nanoplate were synthesized by hydrothermal method with strong ammonia as the precipitator and nickel nitrate as the nickel source.The above synthesis method is simple and easy to operate.The phase structure and morphology were analyzed using XRD and SEM.The results show that under the same pH value and reaction time,low temperature is good for the synthesis of β-Ni（OH）2 petal-shaped sphere,while high temperature is good for the synthesis of β-Ni（OH）2 nanoplate.β-Ni（OH）2 petal-shaped sphere and nanoplate are obtained at 180 ℃ and 240 ℃,respectively,both by reacting at pH 9.0 for 48.0 h.Based on the effects of hydrothermal synthesis conditions on morphology of the sample,the formation mechanism of β-Ni（OH）2 petal-shaped sphere and nanoplate is discussed.

Nano-sized manganese oxide micrometer tube was synthesized by liquid infiltration and high temperature calcination with cotton fibre as the template.The structure and morphology of the samples were investigated by SEM,XRD and FTIR.The results show that the obtained manganese oxide particles are spherical with average diameter of 300~600 nm.The aggregate of manganese oxide particles has a tubular shape with a diameter of about 10 μm and a length of about 40 μm.