Factors affecting the grinding quality of ball mill

The main factors affecting the quality of the grinding are: the hardness of the ore, the particle size of the ore, the size and stability of the ore to be supplied, the specification and type of the ball mill, the number and size of the balls, the mill liner, the speed of the ball mill, the speed of the classifier, grading machine spindle lifting height, leaf blades and small blades in good condition, overflow weir level, classifier opening and closing size, the size of mine water to ball mill, ball mill effluent discharge size and so on. Among them, the hardness of ore, final crushing size, ball mill specifications, ball quality, the amount and size of steel ball, milling speed, grading machine speed, grader blade spacing, classifier weir level, classifier opening and closing size, these factors have been identified in the design process plant, if unreasonable can be resolved through other ways. Ball mill workers need to focus on the daily regulation of the parameters are: size of ball mill to mine water (Including anti-sand tank flushing water), amount of water added in discharge port of ball mill, raw ore to feed and so on. Ball mill to add water to the mine: increase the amount of mineral water, ore in the mill in the residence time shorter, mill ore concentration becomes smaller, coarse particle size; On the contrary, reduce the water supply to the ball mill, ore in the mill relative growth of residence time, grinding ore concentration becomes larger, smaller particle size. Ball mill to add water in discharge port: increases the amount of water in discharge port of ball mill, classifier sand increased, so that the overflow concentration becomes smaller, the particle size becomes thinner; On the contrary, ball mill discharge port water added to reduce the classifier sand reduced, so that the overflow concentration becomes larger, the particle size becomes thicker. Factor of ore feed: The stability of the amount of ore directly affects the quality of grinding, but also affect the classifier overflow fineness. Grading to the amount of ore is small, grinding and grading operation is stable, the quality of grinding and grading products is good, the smaller the magnitude of change, the more stable grinding and grading operations, the quality of grinding and grading products, the better. Otherwise, the quality of grinding and grading products will deteriorate. In summary, ball mill workers not only should we always pay attention to the change of these parameters and the proper adjustment, but also take into account the interaction between these parameters and take them into consideration, analysis and adjustment. This will directly reflect the technical operation of the ball mill individual, but also the key to improving the quality of grinding.