This Calcium Carbonate Ball Mill Grinding Plant utilizes a closed-circuit system consisting of a ball mill and an air classifier. The process is as follows:

Step 1: Raw Material Preparation & Crushing
Raw materials such as calcite, marble, or limestone are washed, impurities removed, and then crushed to ≤25mm feed size by jaw crushers and hammer crushers.

Step 2: Grinding (Ball Mill)
The crushed material is uniformly fed into the ball mill grinding chamber via a feeding device. The ball mill cylinder rotates, lifting the grinding media (steel or ceramic balls) to a certain height before they drop, crushing and grinding the material through impact and attrition. An energy-saving design reduces energy consumption by approximately 30%.

Step 3: Classification (Air Classifier)
The ground material is conveyed by airflow into the air classifier. The classifier‘s high-speed rotating wheel generates centrifugal force to precisely classify the powder. Powder that meets the fineness requirement passes through the classifier wheel to the collection system. Coarse powder that does not meet the requirement is rejected and returned to the ball mill for regrinding, forming a closed circuit.

Step 4: Collection & Packaging
Qualified powder is collected by a pulse baghouse filter, sent to a product silo, and packaged by an automatic packaging machine. The entire system operates under negative pressure to ensure dust-free operation.

Key Advantages of the Ball Mill + Classifier Closed-Circuit System:

• Qualified powder is immediately separated, preventing over-grinding and reducing energy consumption by 30%-50%

• Narrow particle size distribution with no “coarse tail“ phenomenon

• Continuous, stable operation with low maintenance costs

• Ceramic liners and grinding media prevent iron contamination, maintaining high powder whiteness