废旧铝塑湿法分离工艺研究

以有机溶剂浸泡的方法对铝塑片进行分离.首先通过单因素实验对反应介质进行筛选,采用丙酮、三氯甲烷、甲苯对铝塑片进行浸泡,从铝塑分离速度、铝箔回收率和经济角度综合分析,得出丙酮为较优溶剂.然后通过正交实验讨论溶剂浓度、反应温度、搅拌强度对分离时间的影响,得出优化工艺条件为：丙酮浓度80％,反应温度45℃,搅拌强度150 r/min.在该条件下铝塑分离时间20 min,铝箔收率达18％.

Study on the Solvent Separation Process of Scraps Aluminum and Plastic

The scraps aluminum and plastic films are separated by the method of immersing in organic solvent. First of all, through the single factor experiment, the reaction mediums are screened. Then the aluminum and plastic films are immersed by acetone, chloroform, toluene. With the synthetical analyzation from the points of separation speed of aluminum and plastic, aluminum recovery rate and economy, it can be concluded that the optimal solvent is acetone solvent. The effects of the solution concentration, reaction temperature, stirring intensity on the time of separation are discussed through the orthogonal test. The optimum conditions are obtained as follows： acetone concentration is 80%, reaction temperature is 45 ℃, stirring intensity is 150r/min. Under the conditions, the separation time of aluminum and plastic is 20min, the yield of aluminum foil is about 18%.