磷尾矿处理过程中循环硝酸铵溶液中氮的测定  

Determination of nitrogen in circulating ammonium nitrate solution of phosphorus tailings treatment

作　　者：张娇 卢玉莲 张富强 张澜曦 韩瑜 张钦 ZHANG Jiao;LU Yulian;ZHANG Fuqiang;ZHANG Lanxi;HAN Yu;ZHANG Qin(Guizhou Research Institute of Chemical Industry,Guiyang 550002,China;Guizhou Shengyuan New Material Co.,Ltd.,Weng’an 550400,China)

机构地区：[1]贵州省化工研究院,贵州贵阳550002 [2]贵州盛源新材料股份有限公司,贵州瓮安550400

出　　处：《磷肥与复肥》2020年第7期50-51,共2页Phosphate & Compound Fertilizer

摘　　要：采用甲醛法测定磷尾矿化学处理前后硝酸铵溶液中氮含量,将不同工段循环硝酸铵溶液样品的测定结果与国家标准规定的蒸馏后滴定法对比,结果表明甲醛法测定精密度好,准确度高,耗时短,适用于磷尾矿综合利用工业化项目生产过程中硝酸铵溶液中N含量的随时测定。The content of nitrogen in ammonium nitrate solution before and after chemical treatment of phosphorus tailings is determined by formaldehyde method.The determination results of ammonium nitrate solution samples circulated in different sections are compared with distillation titration method.The results show that formaldehyde method has good precision and high accuracy,the determination time is short,which is suitable for the determination of ammonium nitrate solution at any time in the production process of phosphorus tailings comprehensive utilization industrial projects.

关 键 词：磷尾矿 甲醛法 硝酸铵 

分 类 号：TQ440.72[化学工程—化学肥料工业]