The paper report discussess the method in which extract directly available phosphorus from granular triple superphosphate and superphosphate with neutral ammonium citric acid.

Study on reducing moisture of superphosphate by pulping waste liquor;

Affecting factors and its variation rules on extrusion granulation of urea-superphosphate granular com pound fertilizer are studied.

The application and economical profit of a new type of mixing reaciton plant for producing calcium superphosphate;

In this paper,a new type of mixing reaction unit composed of injector and baffled chamber,which is used in production of calcium superphosphate

A numerical calculation for the conversion rate of calcium superphosphate products was derived by the a-nalysis of factors on the conversion rate,and a method for the determination of ratio of phosphate ore incomplete decomposi-tion and available phesphate degeneration induced by sesquioxide was put forward,which provided a path for the predictionand adjustment of the process system.

Potassium dihydrogen phosphate was prepared by the reaction of ordinary superphosphate with potassium sulfate,and effecting factors were investigated.

Quantitative relation between particle size distribution and ultrafine grinding process of ground calcium carbonate;

Ultrafine Ground Calcium Carbonate (GCC) is not only a high added-value product, but also a high quality and environment friendly filler.

The vertical miler mills applied to producing non-metallic minerals such as ground calcium carbonate,barite, pyrophyllite and others were discussed.

Optimized Parameters on the Process of TSP;

Research on TSP processing of Dayukou Phosphate Mine;

The main parameters of TSP produced by Slurry Process using Haikou phosphate rock (PR) in Yunnan province and the additives improving the cohesiveness of TSP produced by Den Process have been studied in this paper.