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with the apparent activation energy of 80.175 kJ/mol. Moreover, the oxidation rate is closely related to particle size of the concentrate. The smaller the particle size is, the larger the oxidation rate is. Key words: molybdenite; oxidation; roasting; kinetics; particle size 1 Introduction Molybdenum is widely used in materials and chemical industry [1,2]. Molybdenite is the main mineral of molybdenum......
Correlation between process parameters,grain size and hardness of friction-stir-welded Cu-Zn alloysAkbar Heidarzadeh,Tohid SaeidFaculty of Materials Engineering, Sahand University of Technology摘 要:In this study, the effects of tool rotational speed, tool traverse speed, and Zn content on the grain size and hardness of the friction-stir-welded(FSWed) Cu......
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Trans. Nonferrous Met. Soc. China 22(2012) 432-441 Support vector machines approach to mean particle size of rock fragmentation due to bench blasting prediction SHI Xiu-zhi1, ZHOU Jian1, WU..., Canada Received 28 March 2011; accepted 1 August 2011 Abstract: Aiming at the problems of the traditional method of assessing distribution of particle size in bench blasting, a support vector......
造粒粒度分布及其预测模型代书华1,沈峰满2(1.内蒙古自治区呼和浩特市内蒙古工业大学材料科学与工程学院2.东北大学 材料与冶金学院,辽宁 沈阳,110004)摘 要:以造粒粒度分布为研究对象,通过原料粒度及粒度分布,水分质量分数对造粒粒度分布影响的实验室研究,改进和优化烧结生产工艺,提出一套合理的烧结生产控制模型,以实现烧结生产的自动化控制和造粒粒度分布的预测.研究结果:在适宜的造粒水分范围内,随水分质量分数的增加,造粒粒度增加;但当水分质量分数过大时,造粒粒度反而减小.原料粒度对造粒粒度的影响是主要因素,而水......
An experimental study on size distribution and zeta potential of bulk cavitation nanobubblesXu-yu Zhang1,Qian-shuai Wang1,Zhong-xian Wu1,Dong-ping Tao1,21. School of Mining Engineering, University... is an important research topic in the field of fine mineral particle separation. The basic characteristics of nanobubbles, including their size, concentration, surface zeta potential, and stability......
3-D temperature distribution of a full size BF copper stave with oblate channelDaqiang Cang, Yanbing Zong, Yixin Mao, Hao Bai, Jingpenng She, and Keshi She Metallurgical Engineering School... of a new type full size copper stave for a real blast furnace was carried out in a special-designed experimental system. The 3-D temperature distribution inside the stave including isotherm was obtained......
tribological conditions.The results showed that the grain size had opposite effects on wear resistance of the cemented carbides in dry sliding wear and microabrasion tests.In the former condition,with decrease...Grain size effect on wear resistance of WC-Co cemented carbides under different tribological conditionsHaibin Wang1,2,Qingfan Qiu1,Xuemei Liu1,Hongbo Nie3,Xiaoyan Song1,Zuoren Nie11. College......
