Vertical Grinding Mill

Working Principle

The main motor drives the grinding disc to rotate through a reducer. Meanwhile, hot air enters the vertical mill body from the air inlet. Material falls onto the center of the grinding disc through the feed inlet and moves evenly from the center to the edge under centrifugal force. When passing through the grinding roller track area on the grinding disc, large pieces of material are directly crushed by the grinding roller's pressure, and fine particles undergo inter-particle grinding through compression. The crushed material continues to move toward the edge of the grinding disc until it is carried away by the strong airflow at the air ring. Larger particles fall back onto the grinding disc for continued crushing. When the material in the airflow passes through the upper separator, coarse particles are returned to the grinding disc for grinding under the action of rotating blades. Fine powder that passes qualification exits the mill with the airflow and is collected and discharged by the system's powder collector as finished product. Iron lumps and other foreign objects mixed in the material move to the edge of the grinding disc and, due to their own weight, fall into the lower chamber of the mill, where they are scraped by a scraper plate installed at the bottom of the grinding disc and discharged through the slag discharge outlet (commonly called "spitting slag").

Product Advantages

1. Highly integrated equipment, low project investment: OLM Vertical Mill integrates crushing, drying, grinding, powder selection, and conveying. The layout is compact, occupying about 50% of the floor space of a ball mill system, and can be arranged outdoors, greatly reducing investment costs. The system design is simple and reasonable, saving unnecessary equipment investment and reducing total equipment investment.
2. Excellent overall performance, low operating costs: From the perspectives of grinding efficiency, powder drying, wear part abrasion, maintenance and other aspects, it achieves lower energy consumption, stronger drying capacity, lower core component wear, and easier maintenance, saving customers equipment operating costs.
3. Short grinding time, low iron content, higher product quality: Material stays in the Vertical Mill for a short time, reducing repeated grinding. Product particle size and chemical composition can be better controlled, facilitating stable product quality. At the same time, the grinding roller and disc do not directly contact, resulting in low iron content in the product, effectively ensuring the whiteness and purity of the material.
4. No environmental pollution, automated control: The equipment operates stably with minimal vibration and low noise. The vertical mill is fully sealed and works under negative pressure with no dust overflow and clean environment. Equipped with an automatic control system, it enables free switching between remote and local control, simple operation and labor savings.

Technical Specifications

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