摘要
磷酸氢钙是常用的饲料添加剂。一般以湿法磷酸作为原料,采取中和法脱除有害元素氟和倍半氧化物。研究了湿法稀磷酸中和后在不同p H下滤液和滤饼的全元素分析。研究表明,当中和p H=2.33时,滤液m(P_2O_5)/m(F)=242.9,满足GB 22548—2017《饲料级磷酸氢钙》Ⅰ型标准,探讨了m(P_2O_5)/m(F)和MER(金属氧化物与P_2O_5的质量比)值随p H的变化关系。
Calcium phosphate is a common feed additive.In general,wet phosphoric acid is used as raw material,and the harmful elements F and R2O3 are removed by neutralization.The content in filtrate and the filter cake under different p H conditions were studied.The research indicated that when p H was 2.33,the mass fraction of P2O5 to F in filtrate was 242.9,which met the type Ⅰ requirement of Feed Grade Calcium Phosphate（GB 22548—2017）.At the same time,the change relationship of the mass fraction of P2O5 to F and MER（the mass fraction of metallic oxide to P2O5） with p H was discussed.
作者
周琼波
龚丽
韩增辉
张晖
何宾宾
姜威
欧志兵
刘润哲
刘丽芬
Zhou Qiongbo;Gong Li;Han Zenghui;Zhang Hui;He Binbin;Jiang Wei;Ou Zhibing;Liu Runzhe;Liu Lifen(National Engineering and Technology Center for the Development ＆ Utilization of Phosphor Resources,Yunnan Phosphate Chemical Group Co.,Ltd.,Jinning 650600,Chin)
出处
《无机盐工业》
CAS
北大核心
2018年第5期47-49,共3页
Inorganic Chemicals Industry
基金
胶磷矿采选关键技术集成与工程示范项目(2014HA004)
云岭产业领军人才
关键词
湿法磷酸
中和法
饲料级磷酸氢钙
wet-process phosphoric acid
neutralization
feed grade calcium phosphate
