Bentonite, rich in montmorillonite, is a unique clay mineral valued for its swelling capacity, water absorption, and binding strength. These properties make it indispensable in two key industrial processes: foundry green sand molding and iron ore pelletizing. In both cases, bentonite must be processed to specific fineness standards to achieve stable and consistent performance.

Foundry Applications

In foundries, bentonite acts as the binder in green sand molds, giving them the strength to withstand high pressure and temperature during casting. For best results, the clay is usually ground to 200 mesh (75 μm) or finer, ensuring uniform blending with sand and water. The Raymond Mill system from Liming Heavy Industry has proven highly effective for this task, delivering stable operation, controlled fineness, and easy adjustment.

Pelletizing Applications

In ironmaking, bentonite binds iron ore fines during pellet formation, providing green strength for drying and sintering. Required fineness ranges from 200–325 mesh (75–45 μm). The Raymond Mill's adjustable classification system allows producers to reach these specifications with reliability, ensuring strong, uniform pellets.

Why Raymond Mill Works Well for Bentonite

Consistent Fineness: Adjustable range from 80–325 mesh with reliable size control.

Energy Efficiency: Optimized design reduces power consumption compared with older systems.

Compact & Clean: Vertical layout saves floor space, and advanced dust collectors ensure dust-free production.

Durable Design: Wear-resistant components and easy maintenance extend service life.

Tailored Plant Solutions

Beyond grinding equipment, Liming offers complete process setups—feeding, conveying, storage, and automation—to adapt to capacity and raw material variations.

Conclusion

For both foundry sand and pelletizing applications, Liming's Raymond Mill offers a dependable, cost-effective grinding solution. Its stable performance, energy savings, and adaptability make it a trusted choice for bentonite processing worldwide.