The ratio of steel ball to ball mill body

The ratio of the ball mill is a problem that often troubles people when the ball mill comes out. Whether its configuration is reasonable directly affects the production efficiency of the ball mill, and also affects the production quality of the ball mill to a certain extent. So how should the main ball mill and steel ball be used? Ready for questions? How to add steel balls according to the size of steel balls in the ball mill? First of all, the ratio of steel balls for ball mills in cement plants, mines, thermal power plants, and chemical plants should be determined according to the diameter of the ball mill, the hardness of the ore, and the particle size of the ore. Ball mill, hardness (quality) of steel ball, speed of ball mill. Determine the proportion of steel balls added. When the model of the ball mill is determined, the speed of the ball mill is also determined, and the hardness of the ore can be measured. The particle size of the ball mill ore is determined by the size of the screen. Usually, the newly installed ball mill has a running-in process. The amount of steel balls added for the first time during the running-in process accounts for 80% of the maximum size of the ball mill. , Ф60mm, ф40mm) size increase. Amount of steel balls added: Different types of ball mills have different total steel ball sizes. For example, MQG1500×3000 ball mill (processing capacity 100-150 tons) has a maximum ball loading capacity of 9.5-10 tons. Steel balls are added for the first time, large balls (ф120mm-ф100mm) account for 30%-40%, medium balls 80mm account for 40%-30%, and small balls (ф60 and ф40mm) account for 30%. Why does steel come out during the running-in process of the ball mill? The amount of balls is only increased by 80%, because the ball mill is installed, the large and small teeth of the ball mill need to be meshed, and the amount (mineral amount) must be gradually increased. After two or three days of normal operation of the ball mill, stop the ball mill to check the meshing condition of the large and small gears. everything is normal. Open the well cover of the ball mill and add the remaining 20% steel balls. After the ball mill starts up and runs normally, add steel balls of various grades according to 3:4:3 (3 pieces for ф120mm, 4 pieces for ф100mm, and 3 pieces for ф80mm). NOTE: The addition of small steel balls is only the first addition of steel balls. Because during the normal operation of the ball mill, the reasonable friction between the steel ball and the steel ball, the steel ball and the ore, the steel ball and the liner of the ball mill will increase the wear and tear, making the large ball mill smaller (the mill is a medium ball), and the medium ball mill is small ball. Therefore, under normal circumstances, there is no need to add small balls. The case of adding pellets is that there is no monomer dissociation in the useful mineral particle size. When the fineness of the grinding machine cannot meet the flotation requirements, an appropriate amount of pellets can be added. The steel balls in the ball mill are constantly worn during operation. In order to maintain the ball load filling rate and reasonable ball ratio, and maintain the stable operation of the ball mill, reasonable ball compensation and low wear compensation are required. The added weight of steel balls is determined according to the quality of steel balls, which determines the amount of ore added per ton. It is best to use new wear-resistant steel balls. The optimal (high-quality) steel ball addition amount is calculated based on the amount of processed ore (that is, 0.8kg per ton of ore). Generally, steel balls need to process one ton of ore (1kg-1.2kg). Different ball mill models have different size ratios of steel balls. The diameter of the ball mill is below 2500mm, and the specification of added steel balls is ф100mm, ф80mm, ф60mm. When the diameter of the ball mill is above 2500, the size of the added steel balls is ф120mm, ф100mm, ф80mm.