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Analysis of the situation affecting the production capacity of coke ultrafine grinding


At present, there is no complete theoretical calculation formula for production capacity, which is usually calculated according to experiments using semi-empirical theory or empirical methods. Mechanical experts mainly studied the structure and dynamics of small-scale planetary coke ultrafine mill, studied its influence on ultra-fine grinding efficiency and grinding particle size, and established a characterization model of ultra-fine grinding structure and grinding effect.
There are many factors affecting the production capacity of coke ultrafine grinding, mainly in the following cases:
1. The coke ultra-fine grinding speed can be simplified into three basic forms under different cylinder rotation speeds. First, when the rotation speed is very low, the material is finely ground by grinding. Because the kinetic energy of the ultra-fine grinding body is not large, the impact force is small, the grinding efficiency is extremely low, and when the rotation speed is high, the ultra-fine grinding body is rotated by the inertia force with the cylinder body, and does not cause impact on the material, mainly By friction, the ultra-fine grinding efficiency is extremely poor. Thirdly, when the rotation speed is suitable, the ultra-fine grinding body is separated from the cylinder wall after the cylinder is rotated to a certain position, and the material is crushed by the impact and friction, and the crushing efficiency is high.
2. The loading capacity of the ultrafine mill body. If there are many ultra-fine grinding bodies added, the more times the material is ground in a unit time, the ultra-fine grinding efficiency is high, but it can not be too much, otherwise it takes up the effective space of the coke ultra-fine grinding, but reduces the ultra-fine grinding. effectiveness.
3. Kinds of pulverized materials, physical and chemical properties (such as particle size, salary, hardness, temperature, moisture and particle shape), grinding particle size requirements.
4. Ultra-fine grinding structure, scale, cabin division, use of lining and compartment board, cylinder speed.
5. The type, shape and size of the ultra-fine grinding body, and the degree of filling.
6. The uniformity of the feed and the degree of filling in the mill.
7. Grinding method and operating conditions of coke ultrafine grinding. Such as dry or wet open circuit or closed circuit wet grinding in the material, water, ball ratio dry grinding inside the ventilation situation closed circuit grinding when the cycle load rate of the use of the classifier and the efficiency of the selection of powder.
8. Whether to add grinding aids.
At present, there is no complete theoretical calculation formula for production capacity, which is usually calculated according to experiments using semi-empirical theory or empirical methods. Mechanical experts mainly studied the structure and dynamics of small-scale planetary coke ultra-fine grinding, studied its influence on ultra-fine grinding efficiency and grinding particle size, and established a characterization model of ultra-fine grinding structure and grinding effect.

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