What preparations need to do before the ball mill starts?

　　To ensure smooth operation of the equipment, improve production efficiency, reduce hazards, should start the equipment in accordance with the correct operation method. Specific startup steps and start-up preventive measures are described in detail, and the start of the ball mill is introduced, and it is hoped to help users, and the operation is standardized, and the life of the ball mill is extended.

　　First, prepare the ball mill

　　before starting, carefully check whether the connecting bolts are tightened, gears, couplings, and ore or fixed bolts before starting the ball mill, and check the large Gears and pinion gears;

　　2. For factories that have not been tested after new installation or overhaul, the rolling mill is started to turn 2-3 laps before the rolling mill collides with the machine.

　　3. Check if the amount of oil in the roller bearing is satisfied with the production needs, and supplements in time. Whether the mass and quantity of the slurry pump lubricant meets the production needs, replace or supplement the lubricant in time;

　　4. Check the various protection devices, such as mercury contactors used for oil protection, hydraulic circuit breakers, The interlocking device and the sound signal are complete and reliable.

　　5. Check whether the instrument and protection device are good, the air pressure of the pneumatic clutch meets the requirements;

　　Second, the ball mill starts step 1. Before starting, it should be in contact with the production part, which is related to the work of the grinding unit. Whether the insulation condition of the electrician inspect the ball mill is good, whether the exciting control cabinet test is allowed, and the drive motor is activated when the control device is not faulty. You can press the automatic start motor by the start button; the manual starter start the motor, first press the start button, the motor starts to rotate, press the run button when the motor speed reaches the rated speed.

　　2. Start the secondary sand pump and start the secondary ball mill, then start a piece of sand pump and a ball mill, open the water valve to a mill and mud can water, mill idle 1-2 minutes, standby After the group is running, the ball mill feed device can be activated, and the amount of feed is controlled, and the feed is stabilized. Note that the front and rear end caps and the cylinder have leaks, and adjust the working conditions of the grinder according to the change of the ore.

　　3, the liquid level in the slurry can should be certainThe height, its function is to feed the pump normally and smoothly, while the air in the slurry has sufficient time to precipitate; observe the production of the cyclone, normal production of the cyclone is marked as an umbrella shape, suitable umbrella angle It is 20 ° -30 °. If the angle is greater than the angle, the deposit concentration is low and the fine particle content is high, and the grading efficiency is low. At an angle, the concentration of the gravel is high and the coarse score in the overflow is high, and the grading efficiency is also low. Adjusts the amount of water to add the slurry tank to control the feed concentration of the cyclone separator to a certain extent, so that the cyclone separator works well.

　　Third, the ball mill starts precautions

　　1. Start the grinding bed from the alkali pressure of the pressure sensitive resistance, the shoulder motion process cannot exceed the predetermined start time, The start time is generally 15-20 s. If the start button is pressed and the grinder begins to rotate to the specified time, the grinder cannot reach the rated speed, and should be stopped immediately, otherwise the frequency varistor will burn down. After stopping the startup, carefully check the mechanical and electrical equipment and find out the reason that cannot be started. The time between the secondary began and once should be more than 15 minutes. If the temperature of the frequency resistor is relatively high, it can be forced to cool down. 2. The continuous start of the mill is not allowed to exceed twice. The third startup should be performed after the examination.

　　Through the above, I believe that everyone has a detailed understanding of the preparations before the ball mill starts, and I hope to help you.