The difference between vertical mill and ball mill
Posted: 2017 06 29 Source: Kefid Shanghai Machinery Views: 619
1. Ball mill energy consumption utilization is low, but it has the unique advantages of "particle shape similar to the spherical, is conducive to raw material calcination and cement hydration hardening", which is the main reason of selecting ball mill for clinker.
2. Vertical mill has reasonable grinding method, timely graded to avoid the phenomenon of material over grinding, so it has high efficiency grinding and low power consumption, saving electricity more than 20% than ball mill.
3. Vertical mill allows large air flow, so the drying capacity is high. The material in the mill is in a suspended state, increasing the contact area of materials and airflow. When the ball mill grinds the wet raw material, it is usually necessary to install additional drying equipment in front of the ball mill because of its limited air flow through.
4. Vertical mill's occupancy space is only 50% to 70% of the ball mill.
5. Vertical mill's product fineness is adjustment, the grain gradation is uniform, the chemical composition is stable. The proportion of fine powder in the product produced by the ball mill is low.
6. Vertical mill's operation without impact between the balls and the balls and the liner, so the noise is low. Its grinding and piping system is relatively simple, sealed better, mostly negative pressure operation, so Less dust.
7. Vertical mill has less wear. There is no direct contact between the metal, so the metal consumption is less. The accessories has less wear and long life, the metal wear per unit of product is generally 5 to 10 grams/ton. The ball mill using collision friction, so it has high wear.
However, the vertical mill is not suitable for grinding hard and abrasive materials.It has shorter life and more frequent maintenance. And its wear parts is expensive than the ball mill.
The above is the main difference between the vertical mill and the ball mill. Each has its own advantages and disadvantages. The customer should choose the right machinery and equipment according to the specific processing material and the capacity.
