Researchers studied how to break down phosphogypsum using hydrogen in a special bed. They looked at factors like hydrogen concentration, temperature, gas flow, and time. They found that higher hydrogen concentration helps break down phosphogypsum, but too much can slow down sulfur removal. Higher temperature and lower bed size help the process. The best conditions are 1050°C temperature, 5% hydrogen, a certain gas flow, and 60 minutes of reaction time. This method can remove 98.78% of phosphogypsum and 84.24% of sulfur, which is good for making acid lime with cement.