The Technique Of Adding Steel Balls To The Ball Mill in The Beneficiation Equipment

The proportion of the ball mill steel ball size should be determined according to the ball mill diameter, ore hardness, ore particle size of the ball mill, steel ball hardness (quality), ball mill speed and other factors. When the model of the ball mill is determined, the speed of the ball mill is also determined. The hardness of the ore is measurable. The ore particle size of the goal mill is determined by changing the size of the grid screen. Generally, the newly installed ball mill has a running-in process. During the running-in process, the amount of steel balls is added for the first time, accounting for 80% of the maximum ball milling capacity of the ball mill. Φ100㎜, Φ80㎜, Φ60㎜, Φ40㎜) size added. The added weight of the steel ball is based on the quality of the steel ball, and the quality of the steel ball determines the amount of ore added per ton. It is best to use new wear-resistant steel balls. The best (good quality) steel ball addition is calculated based on the amount of ore processed per ton (that is, 0.8㎏ per ton of ore). Normal steel balls need to process one ton of ore (1㎏—1.2㎏). The ratio of steel balls in the ball mill should be based on the effective length of your mill, whether it is equipped with a roller press, the size of the feed, what liner and structure to use, the expected sieve fineness and ratio, how many chromium balls to use, and the speed Comprehensive judgment of how many and other factors. Generally, the gradation of steel balls is 120mm 100mm 80mm 40mm. If you want to use high chromium balls, you must require the manufacturer to add rare earths during production. The ball mill steel ball addition problem during the running-in process of the ball mill Why is the ball mill steel ball volume added only 80% during the running-in process of the ball mill, because after the ball mill is installed, the large and small gears of the ball mill need to be meshed, and the processing capacity must be gradually increased until the ball mill is normally continuous After running for two or three days, check the meshing of the large and small gears. When everything is normal, open the manhole cover of the ball mill and add the remaining 20% steel balls for the second time. The addition of small steel balls is only the first time the addition of balls is used. Because the reasonable friction between the steel ball and the steel ball, the steel ball and the ore, and the steel ball and the ball mill liner during the normal operation of the ball mill will increase the wear and make the large ball mill small and the medium ball mill into small balls. Therefore, under normal circumstances, there is no need to add a small ball. The situation of adding pellets is that there is no monomer dissociation in the useful mineral particle size, and when the fineness of the ore mill does not meet the flotation requirements, an appropriate amount of pellets is added. The steel balls in the ball mill are constantly worn during operation. In order to maintain the ball load filling rate and the reasonable ratio of the balls, and to maintain the stable operation of the ball mill, it is necessary to carry out reasonable ball compensation and low wear compensation.