Choose matched ultra-fine grinding equipment
Adopt nitrogen-protected jet mill or low-temperature vertical ultra-fine mill, suitable for brittle sulfur material fine crushing.
Apply closed-loop nitrogen inert atmosphere
Keep oxygen below 2% inside the system, avoid dust explosion, oxidation and particle adhesion during grinding.
Strict low-temperature control
Control grinding temperature below 80°C with water cooling, prevent sulfur melting and agglomeration.
Equip high-precision frequency classifier
Adjust classifier wheel speed accurately to screen out coarse particles, strictly limit oversized grains over 10μm.
Uniform quantitative feeding
Stable slow feeding ensures full collision and shear crushing of sulfur raw materials.
Optimize airflow and grinding parameters
Reasonably set circulating wind pressure, airflow velocity and grinding intensity to refine particles evenly.
Raw material pre-screening
Remove hard impurities in raw sulfur to avoid incomplete grinding and particle size deviation.
Rapid cooling and sealed collection
Cool finished powder quickly to prevent secondary reunion, stabilize final particle size to keep D97 steadily below 10μm.
