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φ-pH diagram of V-Ti-H2O system during pressure acid leaching of converter slag containing vanadium and titanium MU Wang-zhong, ZHANG Ting-an, DOU Zhi-he, L? Guo-zhi, LIU Yan Key Laboratory... increasing. Vanadium and titanium could be separated by one-step leaching based on thermodynamics. The experiment results of pressure acid leaching of converter slag show that leaching rates......
度,氧分压和反应温度等因素对铜锌浸出率的影响. 图3 二段逆流氧压浸出工艺流程图 Fig.3 Flowsheet of two stage adverse current oxygen pressure acid leaching 2 结果和讨论 2.1 一段浸出条件实验 试验每次使用200 g混合精矿,加入木质素磺酸钠1 g,为模拟存... of temperature on extraction of Cu, Zn and Fe and superfluous acid in lixivium 图7 氧分压对铜锌铁浸出率及浸出液残酸的影响 Fig.7 Effect of oxygen pressure on extraction of Cu, Zn and Fe and superfluous acid......
to the formation of a certain amount of species such as [CdOH(H2O)x]+ in HCl leaching system, and the strength of O-H bonds was weakened in acid solution while some complex ions such as [CdCl4]2- were...]. Hydrometallurgy, 2010, 105(1/2): 148-154. [10] BESE A V, BORULU N, COPUR M, COLAK S, ATA O N. Optimization of dissolution of metals from Waelz sintering waste (WSW) by hydrochloric acid solutions [J......
Science and Technology, 2007, 35(1): 82-85. [4] 吕生华, 何洋, 王结良, 等. 环氧(甲基)丙烯酸酯树脂的制备及应用研究[J]. 材料导报, 2003, 17(8): 82-86. L? Sheng-hua, HE Yan. WANG Jie-liang, et al. A study of synthesis and application o f...环氧丙烯酸酯树脂的制备及其聚氨酯改性 庄彩虹1,王晖1,尹健2,刘海霞1,张贤超2,池漪2 (1. 中南大学 化学化工学院 有色金属资源化学教育部重点实验室,湖南 长沙,410083； 2. 中南大学 土木工程学院,湖南 长沙,410012) 摘要:采用丙烯酸对环氧树脂进行改性制备环氧丙烯酸酯,通过单因素实验考察催化剂种类对改性工艺条件的影响；设计正交实验探讨反应温度,催化剂用量及阻聚剂用量对改......
提高氧枪寿命工艺研究苏瑞娟甘肃有色冶金职业技术学院摘 要:氧枪系统是转炉生产不可或缺的一部分.由于氧枪工作环境恶劣,工人操作失误,导致氧枪喷头变形漏水和枪身粘钢结瘤等问题时常发生.本文利用SEM表征,扫描电镜能谱和XRD对氧枪样品进行了分析.SEM表征分析说明,氧枪表面产生裂纹.样品经X射线衍射分析,得到其主要物相组成为Ni,Cr,Fe,Mn,Zn相互组成的氧化物.样品经扫描电镜能谱分析,基体和过渡层主要元素为Ni,Cr和Fe;但扫描电镜能谱分析结果显示氧枪表面镍含量为零,主要是Cr,Fe,Mn,Zn,O形成的化合物,与XRD物相分析结果一致.而镍是重要的合金化元素,能提高钢的强度和耐腐蚀能力.因此氧枪表面镍的消失,是直接导致氧枪产生裂纹的原因,进而降低了氧枪的使用寿命.所以优化结构设计和完善喷涂材料......
J. Cent. South Univ. Technol. (2011) 18: 1930-1939 DOI: 10.1007/s11771-011-0925-x 16s rDNA based microbial diversity analysis of eleven acid mine drainages obtained from three Chinese copper mines... University of Geosciences, Beijing 100083, China ? Central South University Press and Springer-Verlag Berlin Heidelberg 2011 Abstract: Eleven acid mine drainage (AMD) samples were obtained from southeast......
算结果相符合. 关键词:转炉钒渣；氧压酸浸；V-Fe-H2O系；电位-pH图 中图分类号:TF803.21 文献标志码:A Potential-pH diagrams for V-Fe-H2O system during oxygen pressure acid leaching of vanadium-bearing converter...文章编号:1004-0609(2011)11-2936-10 转炉钒渣氧压酸浸过程V-Fe-H2O系的电位-pH图 张廷安, 牟望重, 豆志河, 吕国志, 刘 燕 (东北大学 材料与冶金学院 多金属共生矿生态化利用教育部重点实验室,沈阳 110819) 摘 要:根据高温水溶液中计算各反应电位,pH及电解质活度因子的经验公式,通过热力学计算,得到氧分压为0.5 MPa,对应质量浓度为......
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spectroscopy, FTIR)和Quanta Chrome Autosorb-1型比表面积和孔径分析仪对多孔氧化硅进行分析. 2 结果与讨论 2.1 纤蛇纹石酸浸过程中主要组成元素的变化 元素分析结果表明,除O,Si,Mg,Fe和Al 5种主要元素以外,纤蛇纹石及其酸浸各个阶段产物中均还含有微量Ti,Cr,K,Ca,S和P等元素.表1列出了纤蛇纹石及其不同酸浸样品...伸缩振动[21]；606 cm-1处的峰对应内Mg-OH振动,435 cm-1处的峰对应Mg-OH转变或Si-O弯曲振动[22].随着酸浸程度增加,纤蛇纹石特征谱中所有与Mg有关的振动峰逐渐消失；同时,在787~806 cm-1处出现新的Si-O对称伸缩振动,在955 cm-1 处的Si-O峰蓝移至957 cm-1转变为Si-OH的振动[23],表明受酸浸的作用,八面体被溶出,无定形氧化硅逐渐形成......
and oxalic acid with copper-loaded activated carbon RAO Yi-fei(饶义飞)1, LUO Han-jin(罗汉金)1, WEI Chao-hai(韦朝海)1, LUO Ling-feng(罗凌峰)2 1. College of Environmental Science and Engineering, South China... and tested as a catalyst in the ozonation of phenol and oxalic acid. Cu/AC was characterized using XRD, BET and SEM techniques. Compared with ozonation alone, the presence of Cu/AC in the ozonation......
