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Method for increasing the ball loading rate of a ball mill

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Method for increasing the ball loading rate of a ball mill
Method for increasing the ball loading rate of a ball mill
In order to maintain the amount of ball loading, the type of ball loading, and the proportion of ball loading, the ball should be properly added in daily production, and the ball loading, ball loading and ball loading ratio of the ball can be balanced. This requires a step forward in the rational loading of the ball and a reasonable balance of the ball.

The ball mill rolling bearing and the sliding bearing are distinguished from the movement mode, wherein the rolling bearing moves in a rolling manner, and the sliding bearing moves in a sliding manner, so the friction situation is completely different. The sliding bearing works smoothly, reliably and without noise. Under the condition of liquid lubrication, the sliding surface is separated by the lubricating oil without direct contact, and the friction loss and surface wear can be greatly reduced. The oil film also has a certain vibration absorption capacity, but the starting friction Resistance is greater. The rolling bearing rolling body distributes the rolling elements evenly between the inner ring and the outer ring by means of the cage. The shape and quantity of the rolling bearing directly affect the performance and life of the rolling bearing. The cage can evenly distribute the rolling elements and prevent the rolling elements. Peel off and guide the rolling element to rotate to lubricate.

The test data shows that the ball mill's rotation rate and ball loading rate together determine the movement state of the medium in the mill, which seriously affects the grinding effect. When the loading rate is between 30-50%, as the rotation rate increases, the ball will change from a sloping type to a throwing type, and the productivity will gradually increase. Productivity is greatest when the rate of rotation is appropriate. When the rotation rate is 80-85% of the critical speed, the ball mill loading rate is preferably 40-45%.

When the high-speed grinding is 100-120% of the critical speed, the ball loading rate is about 35%. The ball loading is less and the grinding efficiency is low; the ball loading is too much, and the inner ball is easy to interfere during the operation, which destroys the normal circulation of the ball and reduces the grinding efficiency. The lattice ball mill has a ball loading rate of 40-45%; the overflow ball mill has a ball loading rate of 35-40%.

Regardless of the specific classification of the ball mill, the efficiency of the grinding is the most popular focus. Generally speaking, the output of the ball mill is affected by the following factors.

1. Grinding process of ball mill: The grinding process of ball mill can be divided into two types, open flow and loop flow, or open circuit or closed circuit.

2, ball mill grinding material particle size: ball mill is the grinding material particle processing efficiency is an extremely important factor, this matter material size is too large ball mill grinding energy use, and even dropped to 2%.

3, ball mill grinding material moisture and temperature: ball mill into the grinding material, in addition to particle size, moisture and temperature also affect the ball mill, efficiency generally into the groundwater substances through the assembly to improve the viscosity of the material, reduce the production of the factory, generally The integrated moisture content of the milled material will be reduced by 10% and the increase of 1% per production. The material of the ball mill should not be ground too high, otherwise the ball mill will be smashed.

4. Ball mill liner: Ball mill cylinder liner is an important protection tool to prevent the abrasive material from attacking the cylinder and a direct impulse.

Pub Time : 2018-08-08 17:05:39 >> News list
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