2025/12/04
In recent years, phosphate fertilizer produciton processes have achieved numerous breakthroughs in areas such as green and efficient production and resource recycling. Core advancements are concentrated in areas such as upgrading traditional processes, resource utilization of solid waste and waste materials, and the development of new raw material processes. Specifically: 1. Optimization and upgrading of the wet-process phosphoric acid production: The hemihydrate-dihydrate wet-process phosphoric acid preparation technology developed by China Wuhuan is highly representative. Through technologies such as the regulation of metastable hemihydrate crystallization of calcium sulfate, it increases the phosphorus recovery rate to 98.5%, while reducing overall energy consumption by 52% compared to traditional processes.
2. Solid waste and waste material resource utilization for phosphate fertilizer production: On the one hand, technology can convert retired lithium iron phosphate batteries into acid-resistant slow-release phosphate fertilizer. Through four steps including cathode stripping and selective lithium extraction, the phosphorus recovery rate exceeds 99.5%, and high-purity lithium carbonate can also be recovered, significantly improving the economic benefits of recycling. On the other hand, a team from the Chinese Academy of Sciences has developed amorphous phosphate fertilizer by treating bovine bones with phytic acid. Within 14 days, the phosphorus leaching amount reached 229 times that of traditional bovine bones. In a corn pot experiment, the aboveground dry weight of the plants increased by 204%, achieving efficient utilization of animal biomass waste.
3. Other green and intelligent process breakthroughs: Green leaching technologies are being continuously applied. Pressure acid hydrolysis technology can increase the phosphorus conversion rate by 5%-10%, while acetic acid leaching technology can reduce the corrosion and pollution of fertilizer produciton machine, producing low-impurity phosphate fertilizer. Simultaneously, the industry's digital transformation is accelerating. By 2025, the coverage rate of 5G-based intelligent mining systems will reach 60%, with a production automation control rate exceeding 85%, further improving phosphorus resource utilization through real-time adjustment of production parameters.
