不同离子型聚丙烯酰胺在湿法磷酸生产中的应用研究  

Application of different ionic polyacrylamide in wet-process phosphoric acid production

作　　者：李建闻 解秘 朱桂华 LI Jianwen;XIE Mi;ZHU Guihua(Yunnan Phosphate Group Co.,Ltd.,Kunming 650600,China;National Engineering and Technology Research Center for Development&Utilization of Phosphorous Resources,Kunming 650600,China)

机构地区：[1]云南磷化集团有限公司,云南昆明650600 [2]国家磷资源开发利用工程技术研究中心,云南昆明650600

出　　处：《磷肥与复肥》2023年第11期31-33,共3页Phosphate & Compound Fertilizer

基　　金：中央引导地方科技发展资金“贫杂磷矿高效生产高品质绿色饲料磷酸钙盐产业化技术开发与转化”(202207AC110017)。

摘　　要：为提高湿法磷酸生产效率,减少磷资源损失,降低生产成本,通过实验探究不同离子型聚丙烯酰胺在矿浆浓密和反应料浆过滤中的应用效果。结果表明,非离子型聚丙烯酰胺在磷矿浆浓密过程应用效果最佳,实际生产中可使浓密矿浆w(固)达62%~64%;阴离子型聚丙烯酰胺在磷酸反应料浆过滤过程应用效果最佳,过滤后的磷石膏水溶磷质量分数为0.10%~0.18%,游离水质量分数为24%~27%,均优于生产控制指标。该研究为湿法磷酸生产过程中矿浆浓密和反应料浆过滤工序助剂选择提供参考。In order to improve the production efficiency of wet-process phosphoric acid,reduce the loss of phosphorus resources,and reduce production costs,the application effects of different ionic polyacrylamide on slurry thickening and reaction slurry filtration process are explored through experiments.The results show that nonionic polyacrylamide has the best application effect on the thickening process of phosphate slurry,which can achieve a concentration of 62%-64%in the thickened slurry;The application effect of anionic polyacrylamide on the filtration process of phosphoric acid reaction slurry is the best,the water-soluble phosphorus content of filtered phosphogypsum is 0.10%-0.18%,and the free water content is 24%-27%,all of which are better than the production control indicators.This study provides a reference for selecting additives for slurry thickening and reaction slurry filtration in the production process of wet-process phosphoric acid.

关 键 词：聚丙烯酰胺 湿法磷酸 矿浆浓密 过滤 

分 类 号：TQ126.35[化学工程—无机化工]