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	1. Bioleaching of chalcopyrite and marmatite by moderately thermophilic bacteria: An investigation of their interactions Stepwise bioleaching process
	WANG Jun,ZHAO Hongbo,TAO Lang,CAO Pan,QIN Wenqing,QIU Guanzhou
	Metallurgical Engineering 07 January 2015
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	Abstract: Chalcopyrite and marmatite are associated together most of the time in the raw ores and flotation concentrates. In this work, the interactions between chalcopyrite and marmatite during bioleaching by moderately thermophilic bacteria were investigated mainly by electrochemical measurements and bioleaching experiments. In the initial stage of bioleaching of mixture of chalcopyrite and marmatite, the dissolution of marmatite was preferential, and was significantly accelerated with the addition of chalcopyrite because of the galvanic effect and catalytic effect of Cu2+ ions, while the dissolution of chalcopyrite was inhibited mainly due to the galvanic effect before the accomplishment of dissolution of marmatite. Chalcopyrite dissolved fast when the dissolution of marmatite finished, and small amount of marmatite cannot inhibit the final copper extraction of chalcopyrite if leaching time was long enough. Therefore, stepwise or selective bioleaching was feasible in processing mixture of chalcopyrite and marmatite to avoid complex flotation process in separating chalcopyrite and marmatite. )
	TO cite this article:WANG Jun,ZHAO Hongbo,TAO Lang, et al. Bioleaching of chalcopyrite and marmatite by moderately thermophilic bacteria: An investigation of their interactions Stepwise bioleaching process[OL].[ 7 January 2015] http://en.paper.edu.cn/en_releasepaper/content/4625975


	2. Research on the reducing product of carbonthermal reduction of ilmenite ores
	Song Zengkai,Chen Guo,Chen Jin,Peng Jinhui
	Metallurgical Engineering 17 April 2013
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	Abstract:In this present study, the reducing products of carbonthermal reduction of ilmenite ores were evaluated. The crystal structures, microstructure and surface chemical functional groups of the ilmenite ores and the reducing product of carbonthermal reduction were also analyzed using XRD, SEM, Raman and FT-IR, respectively. Sulphate titanium slag and high titanium slag were the major reducing products of carbonthermal reduction of ilmenite ores. It was found that the low-valent titanium of high titanium slag was increased after carbonthermal reduction of ilmenite ores with higher temperature and longer processing time. Based on the results, this method could be applied effectively and efficiently way for both utilization of ilmenite ores and preparation of sulphate titanium slag and high titanium slag.
	TO cite this article:Song Zengkai,Chen Guo,Chen Jin, et al. Research on the reducing product of carbonthermal reduction of ilmenite ores[J].

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	3. Synthesis of Nickeled Hydroxide with Different Morphologies Using an Ionic Liquid
	Xu Cunying,Hua Yixin
	Metallurgical Engineering 01 September 2010
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	Abstract:A new and facile route has been developed to synthesize beta-Ni(OH)2 nanostructures using ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate ([Bmim]BF4) as reaction media under solvothermal conditions. The beta-Ni(OH)2 with different morphologies, such as nanoflakes, nanoplatelet and nanorods, can be obtained by controlling the volume ratio of the ionic liquid to water and reaction temperature. The as-prepared products were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The as-prepared beta-Ni(OH)2 composite electrodes were prepared by mixing 10 wt.% samples with common spherical Ni(OH)2 to carry out charge-discharge test. The results show that the as-prepared beta-Ni(OH)2 composite electrodes have higher discharge specific capacity, and the beta-Ni(OH)2 nanoflakes show a better electrochemical performance than the others.
	TO cite this article:Xu Cunying,Hua Yixin. Synthesis of Nickeled Hydroxide with Different Morphologies Using an Ionic Liquid[J].


	4. Isotherm, kinetics and thermodynamic studies of adsorption of Cu2+ from aqueous solutions by Mg2+/K+ type orange peel adsorbents
	Guo Xueyi,Liang Sha,Feng Ningchuan,Tian Qinghua
	Metallurgical Engineering 03 July 2009
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	Abstract:Orange peel was used as raw material to prepare two novel orange peel adsorbents MgOP and KOP. FTIR and SEM were used to characterize the adsorbents. Effects of pH, solid/liquid ratio, time and metal ion concentration on the Cu2+ adsorption were investigated by these two adsorbents. The equilibrium data were analyzed by using Langmuir, Freudlich, Temkin and Dubinin-Radushkevich models. Langmuir model provides the best correlation for the adsorption of Cu2+ by both MgOP and KOP, and the mono-layer adsorption capacity for Cu2+ removal by MOP and KOP are 40.37 and 59.77mg/g, respectively. The adsorbed amounts of Cu2+ increased with the increase in contact time and reached equilibrium within 20min. Kinetics data were analyzed using four adsorption kinetic models: the pseudo-first and second-order equations, the Elovich equation and intraparticle diffusion equation. The experimental data fit well the pseudo-second-order equation, which indicates the adsorption of Cu2+ by MgOP and KOP may follow a chemisorption mechanism. Thermodynamic studies showed the spontaneous, exothermic nature of the adsorption of Cu2+ by MgOP and KOP.
	TO cite this article:Guo Xueyi,Liang Sha,Feng Ningchuan, et al. Isotherm, kinetics and thermodynamic studies of adsorption of Cu2+ from aqueous solutions by Mg2+/K+ type orange peel adsorbents [OL].[ 3 July 2009] http://en.paper.edu.cn/en_releasepaper/content/33622


	5. SUBSTANCE FLOW ANALYSIS OF LEAD IN CHINA
	Guo Xueyi,Zhong Juya,Song Yu,Tian Qinghua
	Metallurgical Engineering 04 February 2009
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	Abstract:The method of Substance Flow Analysis (abbreviated as SFA) provides a helpful tool for the study of the industrial metabolism of a certain metal within a regional level. Lead is one of the important strategic commodities of national economic development in China. In this work the flow of lead in China, 2006, was traced within the STAF model, and the situation of production, consumption and recycling of lead resources in China were introduced. The SFA is performed on lead flows during its one year life cycle in detail, and several main average indexes from 2000 to 2006 were calculated as following: PZ=79.28%、PS=19.08%、MZ=148.91%、MS=30.25%、R＝0.8349t/t and S＝0.1949t/t. As one of the biggest producer and consumer of lead in the world, from a long-term point of view, China is still facing the problem on depletion of lead resources. How to increase the resource efficiency is a significant issue for lead industry of China. Based on the result, several advices were proposed in the paper, aiming to contribute important reference information for the industrial metabolism and resource management and recycling of lead industry in China.
	TO cite this article:Guo Xueyi,Zhong Juya,Song Yu, et al. SUBSTANCE FLOW ANALYSIS OF LEAD IN CHINA[OL].[ 4 February 2009] http://en.paper.edu.cn/en_releasepaper/content/28406


	6. SUBSTANCE FLOW ANALYSIS OF ZINC IN CHINA
	Guo Xueyi,Zhong Juya,Song Yu,Tian qinghua
	Metallurgical Engineering 27 January 2009
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	Abstract:The method of Substance Flow Analysis (abbreviated as SFA) provides a helpful tool for the study of the industrial metabolism of a certain metal within a regional level. Zinc is one of the important strategic commodities of national economic development in China, the resources utilization and recycling of which is important for the sustainable development of China\
	TO cite this article:Guo Xueyi,Zhong Juya,Song Yu, et al. SUBSTANCE FLOW ANALYSIS OF ZINC IN CHINA[OL].[27 January 2009] http://en.paper.edu.cn/en_releasepaper/content/28320


	7. Application of orange peel xanthate for the adsorption of Pb2+ from aqueous solutions
	Liang Sha,Guo Xueyi,Feng Ningchuan,Tian Qinghua
	Metallurgical Engineering 24 January 2009
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	Abstract:Pristine orange peel was chemically modified by introducing sulphur groups with the carbon disulfide treatment in alkaline medium. The presence of sulphur groups on orange peel xanthate were identified by FTIR spectroscopic study. Equilibrium isotherms and kinetics were obtained and the effect of various parameters including equilibrium pH, contact time, temperature and initial ion concentration on adsorption of Pb2+ were studied by batch experiments. The maximum adsorption capacity of orange peel xanthate was 204.50 mg•g-1, which was found to increase by about 150% compared to that of pristine orange peel. The adsorption process can attain equilibrium within 20 min, and kinetics was found to be best-fit pseudo-second order equation. Temperature has little effect on the adsorption capacity of orange peel xanthate. In addition, the adsorption mechanism was proposed.
	TO cite this article:Liang Sha,Guo Xueyi,Feng Ningchuan, et al. Application of orange peel xanthate for the adsorption of Pb2+ from aqueous solutions[OL].[24 January 2009] http://en.paper.edu.cn/en_releasepaper/content/28314


	8. Adsorption of copper and cadmium ions from aqueous solution by chemically modified orange peel
	Liang Sha,Guo Xueyi,Feng Ningchuan,Tian Qinghua
	Metallurgical Engineering 22 January 2009
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	Abstract:The present article describes the adsorption behaviors of Cu2+ and Cd2+ on chemically modified waste orange peel. The adsorbents were characterized using scanning electron microscopy and infrared spectrophotometer. The effect of various parameters like solution pH, shaking time, initial metal ion concentration and temperature on adsorption efficiencies of these two metals were studied systematically by batch experiments.. Adsorption isotherms of these two metals on orange peel and chemically modified orange peel were obtained and compared with Langmuir and Freundlich type models. The rate of adsorption of Cu2+ and Cd2+ on chemically modified orange peel at a constant temperature (25 oC) found to follow a pseudo-second order equation, indicating their chemical adsorption. Temperature has a negative impact on Cu2+ adsorption, while Cd2+ adsorption found to be more or less independent of temperature. Maximum adsorption capacities of Cu2+ and Cd2+ on the chemically modified orange peel were found to be 70.67 and 136.05 mg/g, respectively. Adsorption–desorption studies made on chemically modified orange peel showed that, the adsorption capacities remain high until 5th cycle. This study demonstrated that, the waste orange peel after simple chemical treatment could be used as a potential adsorbent for toxic metals such as Cu and Cd.
	TO cite this article:Liang Sha,Guo Xueyi,Feng Ningchuan, et al. Adsorption of copper and cadmium ions from aqueous solution by chemically modified orange peel[OL].[22 January 2009] http://en.paper.edu.cn/en_releasepaper/content/28246

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