At present, to add steel balls into the mill, you need to manually load the required number of steel balls into the ball adding funnel, lift it to the 2-story platform by a crane, and pour the steel balls into the ball adding port at one time to complete the adding of steel balls. superior.
The manual automatic ball adding machine method mainly has the following shortcomings:
(1) Due to the great uncertainty in the production demand for ore input, the daily output changes greatly, with a high of 2500T\/D and a low of 1500T\/D. When the ore input changes, manual additions are made. The ball method cannot add balls according to the ball consumption ratio specified by the process. The ball consumption ratio will not reach the required process and affect the grinding efficiency, or the ball consumption ratio will be higher than the ball consumption ratio and cause the waste of steel balls. Main grinding is the main grinding method. Example: The daily amount of steel balls added is 135 (4.04Kg\/piece, total: 545.4Kg), and the total number of balls added in 3 shifts is 1636.2Kg. According to the ball consumption ratio of 0.76Kg\/T required by the process, it is calculated: when the output When the output reaches 2500T\/D, the amount of steel balls that should be added is: 1900Kg. When the output is 1500T\/D, the amount of steel balls that should be added is: 1140Kg. It can be concluded that when the output is higher than the process design When the output is lower than the process design, adding too much steel balls will cause a waste of steel balls.
(2) The manual automatic ball adding machine does not have accurate data basis, and it is impossible to have accurate statistics on the current consumption of steel balls. There are cases of adding less and more.
(3) It is difficult to manually add steel balls on time, which results in a reduction in grinding efficiency or a waste of steel balls in the current period. Take the main grinding system of one system as an example:
(4) When the automatic ball adding machine of the ball mill is operating normally, the reasonable grinding between the steel balls, the steel balls and the ore, and the steel balls and the ball mill linings will increase the loss and grind the large balls into small ones (grind into medium ones). ball), the medium ball mill is a small ball. The steel balls in the ball mill continue to wear during operation. After each steel ball of the current team is added to the mill at one time, the steel balls wear in the mill at the same time, and continue to wear. In the case of loss, there will be only small balls in the mill before adding steel balls next time, which seriously affects the grinding particle size. The better way to add balls is to change in real time based on changes in ore volume and ball consumption ratio. The amount of balls to be added, in order to maintain the ball charge filling rate and the reasonable ratio of balls, and maintain the stable operation of the ball mill, the balls must be replenished reasonably to minimize wear and tear.
