The speed of the ball mill grinding efficiency of the mill speed motion which always affect the mill grinding media and materials, and, due to changes in the rotational speed of the grinding media and materials doing different sports, different sports in the state , ball mill grinding efficiency is also changing. Ball mill grinding media and the material inside the ball at different speeds, can be divided into the following three types of motion: diarrhea fall-motion; the falling motion; centrifugal movement. Mill normal operating state or drain off into the falling type motion. Mill critical speed empirical formula where n - ball mill critical speed (r / min) D - the inner diameter of the cylinder (cm) by observing the experiment and practice analysis, the more the greater the amount of close to Ball Mill, grinding media, give full play to the role of the outermost layer of crushed material to, in order to make bigger mill efficiency. When informed by a theoretical calculation, from the angle of the outermost layer of the grinding media is 54.73 °, the outermost layer can obtain the maximum drop height of the material to most effectively crushed. From the practice found that when the ball's operating speed is adjusted to the critical speed of 0.75 to 0.85, you can make grinding media at a higher drop height. From the above analysis showed that the speed of the ball mill in which the best efficiency at work. Can also be seen, much more research analysis ball sport, you can benefit from. Horn former mill site and anchor bolts anchor bolts, anchor bolts should be rust on the cleaned oil, but still on the threaded portion of oil to prevent rust, check the bolts and nuts are good. Sleeve anchor bolts should be added to the protective cover to prevent debris falling into the bolt hole location should be checked before the casing is embedded Meets foundation plans, and is good with the bolt after bolt placement for Location convenient, dry-type ball mill, you should use the template to support solid, and then to add the plug into the matter within the embedded member. Bolt displacement error within 1 ~ 2mm, bolts vertical error in 1 / 1000mm or less. Bolt nut washer must be added the following, the locking bolt locking device should be used, available spring washer or double nut, concrete design strength of 75% after only allowed to tighten the bolt. Each floor screed using a ball mill to adjust the horn, horn group should minimize the number of blocks horns, each horn group is not more than five. Horn of material can be ordinary carbon steel, horn edge should be polished smooth, when paired oblique horn processing dimensions are the same and have the same slope, Liaoning mill, inclined by planing or grinding machine, the slope should be 1 / 20 ~ 1/40. Each group should be placed neatly smooth horn, good contact. Each pair of oblique horn overlapping area should not exceed more than 75% of the area of ??the horn. Floor leveling horn in each group should be pressed between the mill price, horn and horn, horn and equipment between the base plate with a thickness of 0.05mm feeler, in the same section at both sides of the stuffing horn length the sum of the length or width of no more than 1/3 of the horn. Horn should be exposed at the base 10 ~ 50mm, the length of the horn extending into the base of the equipment should be more than the anchor bolts. Horn adjusted, after leveling device, spot welding between the horn should be firm. Each bolt should be placed on both sides near the horn group, horn set in place a smooth and does not affect the secondary grouting, the anchor bolts should be as close as possible and the main parts of the force. The distance between the adjacent plate group should be 300 ~ 600mm. Wet ball mill, North mine Zhongcheng (certified), Liaoning Ball from Shenyang North Mine Zhongcheng machinery Limited. Shenyang North Mine Zhongcheng equipment Limited (sybkzc.com) (www.sybkzcjq.com) Liaoning Shenyang, machining leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum meet customer needs. In North mine public into leadership with the staff warmly welcome all inquiries negotiations to create the North mine public into a better future.