The Effect of C/S Ratio on the Decomposition Rate of Phosphogypsum

In nitrogen,decomposition of phosphogypsum was not exactly the same at different temperatures.Raising the temperature of calcination and prolong the time of heat preservation can effectively improve the decomposition rate of phosphogypsum.At 1100 ℃ and 1150 ℃,C/S=0.7,the decomposition can reach above 99% for 20 min.The decomposition of phosphogypsum rate can reach more than 99% under the constant temperature 1200 ℃ for 5 min.