Chemical Salt Extraction: LWL Series Horizontal Screen Scroll Centrifuge

Achieves 99.5% Ammonium Sulfate Recovery Rate

Extracting salt from chemical waste (such as ammonium sulfate and ammonium chloride) faces three major challenges: rapid equipment corrosion, severe screen wear, and low salt recovery rate. The Blovebird LWL series Horizontal Screen Scroll Centrifuge, through targeted technological improvements, has become a core piece of equipment for waste liquid resource utilization.

01 Case Study

02 Technological Improvements Implemented:

1.Corrosion Protection Upgrade: Three liquid-blocking structures have been added to the separation zone. The main shaft in the buffer zone uses PTFE seals and corrosion-resistant bushings to completely prevent acidic moisture from entering the transmission zone. The transmission zone uses a labyrinth seal combined with hard, wear-resistant seals, ensuring no corrosion failures after 180 days of continuous operation.

2.Wear Resistance Enhancement: The screen and spiral blades have undergone nitriding treatment, increasing the hardness from HV90 to HV750 and extending the service life from 3 months to 18 months, reducing annual spare parts replacement costs by 60,000 yuan.

03 Application Results:

1.Resource Recycling: 7,500 tons of ammonium sulfate are recycled annually with a purity exceeding 99.2%, which can be directly reused in production, creating an economic value exceeding 15 million yuan;

2. Environmental Compliance: The COD value of the treated wastewater is reduced to 60 mg/L, and the salt content is <0.1%, meeting the "Integrated Wastewater Discharge Standard," reducing hazardous waste emissions by 45,000 tons annually;