制备细镍包石墨粉末的动力学  

Kinetics for Preparation of Fine Nickel-Coated Graphite Composite Powder

作　　者：李锐星[1] 梁焕珍[1] 喻克宁[1] 白辰东[1] 黎少华[1] 于道成 

机构地区：[1]中国科学院过程工程研究所,北京100080

出　　处：《有色金属（冶炼部分）》2002年第5期37-39,42,共4页Nonferrous Metals（Extractive Metallurgy)

摘　　要：控制反应速度是采用水热方法制备包覆粉末的关键技术之一。以细镍包石墨粉末为研究对象 ,探讨了制备过程中的一系列反应参数 :温度、表面活性剂、硫酸铵浓度、氨水浓度、氢分压以及初始溶液镍浓度等因素对反应诱导期、还原速度的影响 ,证明了这些参数控制着反应速度。It is one of the key factors to control the reaction rate of preparing coated powder by hydrothermal technique The recent work is to examine the behaviors of reduction temperature, surfactant, concentration of (NH 4) 2SO 4 and NH 3·H 2O, hydrogen partial pressure and nickel starting concentration depending on the fine nickel coated graphite powder which no one never studied in China It was identified that the reaction process was determined by these factors

关 键 词：动力学 湿法冶金 水热 氢还原 复合粉末 镍包石墨粉末 复合粉末 

分 类 号：TF123.74[冶金工程—粉末冶金]