Research progress on application and purification of residual acid by product of wet-process phosphoric acid
A large amount of ion impurities in residual acid from wet-process phosphoric acid extraction and its high viscosity limit the application of the abundant phosphorus resources in it.To improve the comprehensive utilization rate of phosphate rock resources,promote the transformation and upgrading,green and sustainable development of the phosphorus chemical industry,the application research of residual acid is sorted out,including the preparation of ammonium phosphate,ammonium polyphosphate,urea phosphate,potassium dihydrogen phosphate,sodium tripolyphosphate,feed grade calcium hydrogen phosphate,and their application in phosphate rock flotation;The typical methods for purifying residual acids are summarized.The value-added and efficient utilization,as well as research directions for the purification of residual acids in the future are looked forward.
NETL
NSTL
万方数据
