二水物湿法磷酸萃取槽薄壁防腐衬里

The Corrosion-Resistant Lining of Extractive Tank To Made Dihydrate Wet-Process Phosphoric Acid

湿法磷酸萃取槽防腐内衬,一直都采用厚壁防腐,其厚度在25mm以上,投资高,工期长。目前初步研究成功14mm厚的薄壁防腐内衬,经二年生产使用,光泽尚如初,比厚壁内衬节约设资35％～80％。

The extractive tank to make wet-process Phosphoric acid generally employs thick-wall corrosion lining. The thickness is more than 25 mm. The principal disadvantages of thick-wall lining are its high vestment and long time limit for construction. Now a kind of thin-wall lining has been developed preliminarily. The thickness is 14 mm. The thin-wall corrosion-resistat lining has been used for two years. The glossiness of the used thin-wall lining looked like that of a new one. The investment of thin-wall lining decreased by 35-80% compared with the thick-wall linig.