Pin Mill Depolymerization & Grinding System

After being fed into the grinding chamber by the feeding device, the sulfur particles are accelerated synchronously with the high-speed rotating turntable and move outward under the action of centrifugal force. During the process, they collide violently with the three-layer pin rod rings on the turntable and the static disc to realize ultra-fine grinding, with the intensity increasing toward the outer circumference. The integrated nitrogen-cooling loop prevents sulfur from softening, ensuring sufficient and uniform grinding while guaranteeing a finer discharge fineness and a regular particle size distribution. The complete system consists of a pin rod mill, a two-stage classifier, a dust collector and an induced draft fan. The pin rod mill accurately controls the D50 index; the first-stage classification removes oversized particles to meet the D90 requirement, with coarse particles being able to flow back for further processing; the second-stage classification removes fine powder to ensure the D10 index.

The system is equipped with three independent discharge outlets: the first-stage classification discharges coarse particles for recycling, the second-stage classification outputs finished sulfur products, and the dust collector collects micro-powder. The classified discharging is accurate and efficient, meeting the refined requirements for the high-purity micronization and precise particle size control of sulfur materials under strict safety standards.