盐酸法饲料级磷酸氢钙工艺技术改进  

Improvement of Process Technology for Feed Grade Calcium Hydrogen Phosphate by Hydrochloric Acid Process

作　　者：张昌清 

机构地区：[1]中石化南京工程有限公司,江苏南京211100

出　　处：《硫磷设计与粉体工程》2014年第2期24-29,8,共6页Sulphur Phosphorus & Bulk Materials Handling Related Engineering

摘　　要：盐酸法饲料级磷酸氢钙工艺是较为成熟的一种工艺,具有磷收率较高、可以使用品位较低的磷矿、利用低浓度副产盐酸、能耗低等优点。针对某企业原有盐酸法饲料级磷酸氢钙装置出现的一些对产品质量产生影响的工艺技术问题,在试验的基础上对工艺流程进行了相应的改进,特别是在脱氟和中和两个工序做了相应调整,对稳定和提高产品质量上起到了关键的作用。The process for feed grade calcium hydrogen phosphate by hydrochloric acid process is a mature process which offers advantages like high phosphorus yield,possibility to utilize low grade phosphate rock,utilize low concentration by-product hydrochloric acid,and low energy consumption. For some process technical problems occurred in the feed grade calcium hydrogen phosphate plant based on hydrochloric acid process of a company which have affected product quality,based on tests,improvements are made for the process flow,in particular,adjustments are made in two sections: fluoride removal and neutralization,which plays a crucial role in improving the product quality.

关 键 词：磷酸氢钙 盐酸法 脱氟 中和 存在问题 改进措施 

分 类 号：TQ132.32[化学工程—无机化工]