The necessary matters about limestone grinding can be summarized into the following aspects to ensure the smooth progress of the production process, the stability of product quality, and the safety of equipment and personnel:
1. Equipment inspection and preparation
• Check the inspection door: Make sure that all inspection doors are tightly closed to avoid material leakage or equipment damage.
• Check the crusher: For the grinding production line with jaw crusher and elevator, check whether the liner gap of the crusher meets the feed particle size to ensure the crushing effect.
• Adjust equipment parameters: According to production needs, adjust the analyzer speed to achieve the approximate finished product particle size requirements; adjust the fan air volume to ensure smooth material transportation and classification.
2. Startup sequence and operation
• Startup sequence: First start the bucket elevator to achieve continuous and uniform material transportation; when there is material in the material bin, turn on the analyzer; start the blower when it is empty, and wait until it is running normally before loading the material; finally start the main machine of the limestone mill, and start the electromagnetic vibrating feeder at the moment of starting the main machine.
• Feeding control: It is strictly forbidden to allow metal blocks to enter the mill to avoid damaging the grinding roller, grinding ring, and other parts; the feeding should be uniform to avoid too much or too little. Too much feeding will block the air duct, reduce production, and easily burn the motor. Too little feeding will also reduce production.
3. Process monitoring and adjustment
• Air volume adjustment: The air volume control valve is generally opened to a larger position, but it needs to be adjusted appropriately according to the requirements of fineness and production. Too low air volume can easily cause material deposition and affect the grinding effect.
• Particle size control: Depending on the size, hardness, water content, and specific gravity of the material, the coarseness and fineness of the processing are also different. The analyzer above can be adjusted. The higher the speed, the higher the fineness, and the lower the speed, the lower the fineness.
• Temperature control: Control the temperature during the grinding process to avoid the burning of limestone powder caused by overheating.
4. Daily maintenance and care
• Lubrication and maintenance: The main shaft of the lime mill should be refueled once per shift. Pay attention to cleaning the oil channel and keep the oil channel unobstructed. At the same time, each lubrication point should be checked regularly to ensure that there is sufficient and clean lubricating oil.
• Wear inspection: Regularly check the wear of the lining in the mill. If the lining is worn or broken, it should be replaced in time; the cylinder should be tightened in time.
• Noise and load monitoring: When the limestone mill produces abnormal noise or the load suddenly increases, it should be stopped immediately for inspection and troubleshooting.
5. Safety precautions
• Shutdown sequence: When shutting down, the feeder should be turned off first to stop feeding. After the feeder stops for about one minute, the main machine should be stopped to allow the residual abrasive to continue grinding; the blower should be stopped after the residual material is cleaned up.
• Anti-blocking and anti-burning: After the limestone mill is started, it cannot be left without feeding for a long time. The minimum time limit is 15 minutes to avoid damaging the lining.
In summary, the necessary matters for limestone grinding involve equipment inspection, startup sequence, process monitoring, daily maintenance, and safety precautions. Following these matters can ensure the safety, efficiency, and stability of the limestone grinding process.
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Baichy Machinery is a factory supplier of mining machinery, mainly focusing on stone crushers, powder grinding mills, and mineral beneficiation plants. We can offer you a free design and completed solutions according to your project.
Baichy Heavy Industry has grown into a high-tech mining equipment comprehensive enterprise, integrating R&D, manufacturing, sales, and after-sales service, Passing ISO9001:2015 quality management system certifications. The main products are mobile jaw crushing plants, construction waste crushing plants, PE jaw crushers, VSI sand-making machines, Symons cone crushers, single-cylinder hydraulic cone crushers, PCX high-fine crushers, grinding mills, ball mills, and full sets of beneficiation equipment with an excellent level.
