Optimization of Preparation Process and Cost Control of Precipitation Method White Carbon Black
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Process optimization:
Reaction stage: Control the pH value between 8-10 and increase the specific surface area; A reaction temperature of 90 ℃ can shorten the time.
Washing stage: Adopting countercurrent washing technology to reduce water consumption and wastewater discharge.
Drying stage: spray drying method has high efficiency, but large energy consumption; The vacuum drying method is suitable for high-end products.
Cost control:
Raw material selection: Low sodium silicate can reduce purification costs.
Energy management: The waste heat recovery system can reduce drying energy consumption by 20%.
Large scale production: The single line production capacity has been increased to 50000 tons per year, and the unit cost has been reduced by 15%.
