絮凝剂对磷酸料浆沉降分离性能影响的实验研究

Experimental Study on Effects of Flocculants on Sedimentation Characteristics of Phosphoric Acid Slurry

介绍了湿法磷酸料浆在加入不同剂量的聚丙烯酰胺时的重力沉降性能,通过比较A、B两种聚丙烯酰胺对实验料浆沉降性能的影响,得出的结论是:当加入B型聚丙烯酰胺,加入量为10ppm时,该料浆的沉降性能较好,且温度宜控制在60℃左右。实验结果对提高湿法磷酸料浆的分离效率以及分离机械的选型都具有重要的指导意义。

The gravitational sedimentation characteristics of phosphoric acid slurry were studied by adding polyacrylamide with different dosages.By comparing the effects of polyacrylamide flocculants with different molecular weights (the molecular weight of polyacrylamide A was about 3,000,000 and that of polyacrylamide B was about 8,000,000) on the sedimentation performance of phosphoric acid slurries, some conclusions were made as follows:When polyacrylamide B was added with dosage of 10 ppm and the temperature was controlled at about 60oC,the best sedimentation performance could be obtained.The results provided some guidance for the improvement of separation efficiency of the wet-process phosphoric acid slurry and the selection of separation machines.