From raw coal to finished activated carbon, eight core process stages with strict quality control at every step
Select premium Datong bituminous coal, crush to specific particle size range, providing uniform raw material for subsequent carbonization and activation.
High-temperature carbonization in an oxygen-controlled environment to remove volatile matter and form an initial pore structure, producing carbonized material with a certain strength.
Slep Type 800 activation furnace using high-temperature steam to further develop microporous and mesoporous structures, resulting in large specific surface area and adsorption capacity.
Multi-stage crushing and vibrating screen classification based on customer mesh size requirements, producing various specifications from 4-mesh to 325-mesh.
Using hydrochloric acid or sodium hydroxide for chemical washing to dissolve and remove ash and metal impurities, significantly increasing product purity.
Repeated washing with distilled water until neutral pH, avoiding soluble impurity introduction to ensure the product meets high-purity activated carbon standards.
Vibrating fluidized bed drying, precisely controlling temperature and duration to achieve target moisture while minimizing particle attrition and maintaining granular integrity.
Sampling inspection of finished products for iodine value, ash, moisture, pH, and other indicators; compliant batches are packaged, weighed, and shipped. Each batch is archived with a quality inspection report.
Every batch undergoes strict quality testing, covering all core physical and chemical indicators
mg/g — key indicator of micropore development and adsorption capacity
mg/g — indicator of mesopore structure for liquid-phase decolorization
% — impurity level, reflecting product purity
% — product water content, affecting net weight and storage stability
— acid-base property, affecting application compatibility
% — abrasion resistance, ensuring durability during transport and use