酸溶置换法回收废甲醇催化剂中铜锌的研究  

Study on recovery of Cu/Zn in waste catalyst from the production of methanol by pickling replacement process

作　　者：郝喜才[1] 胡斌杰[1] 景中建[1] 

机构地区：[1]开封大学,河南开封475004

出　　处：《无机盐工业》2006年第12期51-53,共3页Inorganic Chemicals Industry

摘　　要：研究了采用酸溶置换法回收废甲醇催化剂中铜和锌的工艺,并着重对酸溶、置换、沉锌等环节进行了改进。探讨了回收废催化剂中铜和锌的过程中,废催化剂粒度、煅烧温度、酸溶的硫酸用量及质量分数、酸溶时间、锌置换铜的用量及时间、焙烧铜粉温度及时间、氧化铜与硫酸反应的时间及温度、沉锌时pH对锌回收率的影响,得出了适宜的工艺条件。在适宜工艺条件下,可以制备出产品纯度与附加值高的活性氧化锌和五水硫酸铜,回收率分别达94.3%与93.7%,产品质量分别达到GB/T3185—1992和GB437—1980标准,具有较好的经济效益和社会效益,市场前景广阔。The recovery of copper and zinc in the waste., catalyst from the production of methanol by pickling replacement is studied. Especially, the improvements of pickling, replacement and precipitation sections are made. The effects of the diameter of catalyst particle, the calcine temperature, the amount and concentration of sulfuric acid in the acid pickling process, the time of acid pickling, the time and the amount of zinc used in the replacement of copper by zinc, the time and temperature of baking copper powder, the reaction time and temperature of cupric oxide with sulfuric acid and the pH value of solution in precipitating zinc on the recovery rate of Cu and Zn in waste catalyst are investigated and the optimum process conditions are obtained. The active zinc oxide and copper salfate pentahydrate with high purity and value - added can be made. Their recovery rate can reach 94.3% and 93.7% respectively. The quality of the products can meet the standard of GB/T3185-1992 and GB437-1980 respectively. This method has better economic and social benefits and promising market.

关 键 词：甲醇 废催化剂 酸溶置换 

分 类 号：TQ131.21[化学工程—无机化工]