高温高压触媒法金刚石合成块电解过程影响因素探讨  

Influence factors of electrolytic processing diamond blocks synthesized by high temperature and high pressure catalyst method

作　　者：邵静茹 李方宜 刘永奇 刘梓沐 翟向阳 朱艺波 张松飞 董沛 SHAO Jingru;LI Fangyi;LIU Yongqi;LIU Zimu;ZHAI Xiangyang;ZHU Yibo;ZHANG Songfe;DONG Pei(Zhengzhou Sino-crystal Diamond Co.,Ltd.,Zhengzhou 450001,China;New Fengyang Campus of Zhengzhou Foreign Language School,Zhengzhou 450001,China)

机构地区：[1]郑州华晶金刚石股份有限公司,郑州450001 [2]郑州外国语新枫杨学校,郑州450001

出　　处：《金刚石与磨料磨具工程》2018年第2期12-14,共3页Diamond & Abrasives Engineering

摘　　要：用石墨和金属触媒通过高温高压合成金刚石,合成块中的金刚石晶体被金属触媒等紧紧包裹,普通物理方法难以提纯。利用电解方法将合成块中的金属在阳极上氧化电解为金属离子而进入溶液中,之后再通过溶液迁移到阴极上还原析出,回收金属,是目前比较高效环保的方法。通过电解实验,分析电解过程中电解液的主要成分和电解工艺条件对电解效率的影响。结果表明:添加剂中活化剂的最佳质量浓度为15~30g/L,复合稳定剂最佳质量浓度为25~30g/L时,加入的添加剂能显著改善电解液性能;在电解液pH值为2~4,阴极、阳极间距为50~250mm,电控柜电流为4000~4200A的电解工艺条件下,电解效率显著提高。Diamond is synthesized using graphite and metal catalyst at high temperature and high pressure.However,diamond in the synthetic block is tightly wrapped by graphite,catalyst metal and etc,which is difficult to purify through general physical methods.Electrolysis is used to oxidize the metal in the synthetic block on the anode into metal ions and thus solved in thesolution,and then the ions are migrated to the cathode through the solution to recover the metal,which is a more efficient and environmentally friendly method at present.Through the electrolysis experiment,the influences of the main components of electrolyte and the conditions of electrolysis process on the efficiency of electrolysis are analyzed.The results show that the best mass concentration of activator in the additives is 15-30 g/L and the best mass concentration of composite stabilizer is 25-30 g/L,t he additives can significantly improve the performance of electrolyte.The pH value of the electrolyte is 2-4,electric cathode and anode distance is 50-250 mm and the current of control cabinet is 4000-4200 A,the electrolysis efficiency can be significantly improved.

关 键 词：人造金刚石合成块 电解工艺 电解液 电解效率 

分 类 号：TQ164[化学工程—高温制品工业] TG17[金属学及工艺—金属表面处理]