The new method of the separation of the mixture of dichlorobenzene (DCB) isomers (namely,p DCB and o DCB) in organic solvent by watering out crystallization is concerned about the first crystallization and precipitation of pure p DCB from solution by the addition of water.
水析结晶精制对二氯苯的新方法 ,即加水使溶解于有机溶剂里的混二氯苯 (对二氯苯、邻二氯苯 )中的对二氯苯优先结晶析出 ,达到分离提纯的目的。
In industry, analyzing fine - grain size usually uses both elutriation and continuous elutriator methods.
工业上常用淘析法和连续水析器法分析细粒物料粒度,这两种方法均存在不可忽视的误差,操作也不很方便。