1. Resource Recycling and Utilization

Extraction of useful components: Anaerobic pyrolysis can extract useful chemical substances from phosphogypsum, such as calcium oxide, which can be further used in industrial production, achieving resource recycling.

2. Environmental Benefits

Reduced waste accumulation: By treating waste phosphogypsum through anaerobic pyrolysis, the amount of waste accumulation can be significantly reduced, alleviating environmental pressure and reducing land occupation and environmental pollution risks.

3. Reduced pollution emissions: The anaerobic pyrolysis process is carried out in a closed environment, and the end-of-pipe alkaline scrubbing system can effectively control the emission of harmful gases, reducing air pollution.

4. Economic Benefits

Lower processing costs: Compared with traditional waste treatment methods, anaerobic pyrolysis technology may have lower processing costs, especially in large-scale applications, where the economic benefits are more significant.

Creation of value-added products: By-products generated through anaerobic pyrolysis, such as calcium oxide, can be sold as industrial raw materials, creating additional economic value.

5. Technological Maturity

Strong process controllability: The anaerobic pyrolysis process can be precisely controlled by adjusting parameters such as temperature and pressure, which is conducive to improving product quality and yield.

Strong adaptability: The anaerobic pyrolysis process is suitable for treating waste phosphogypsum from different sources and compositions, and has strong adaptability.

6. Waste Heat Utilization

The waste gas generated during the drying and volatilization of phosphogypsum in the pyrolysis process does not require the use of costly RTO regenerative combustion treatment. The tail gas, after passing through a comprehensive combustion heating system, can achieve a combustion rate of approximately 99% for combustible gases. The tail gas after combustion and heating is then treated by an alkaline scrubbing system before being discharged in compliance with standards.