The ratio of ball mill ball is a problem that the ball mill has been used since the advent of the ball mill. The proportion of the ball mill is reasonable and directly affects the production efficiency of the ball mill.
How to solve the problem of the ratio of ball mill and wear-resisting ball? How to wear the ball to the ball mill in the size of the ball to add wear-resistant steel ball it?
The ball mill diameter below 2500mm, add wear ball size Phi 100mm, Phi 80mm, Phi 60mm.
Ball mill is more than 2500mm in diameter, add wear ball size Phi 120mm, Phi 100mm, Phi 80mm.
First of all, the ball mill in cement plant, mine field, power plant, chemical plant according to the ratio of wear resistant steel ball milling surface diameter, rock hardness, ball mill the ore particle size, hardness, wear resistant steel ball (quality) and other factors to determine the rotational speed of ball mill ball has added.
When the model of the ball mill is determined, the speed of the ball mill is determined, and the hardness of the ore can be determined. The particle size of ore by ball mill, screening to determine the size of fortune. Usually, the installation of the new ball mill has a run in process, in the process of running, first add amount of wear resistant steel ball, 80% ball mill accounted for the largest proportion can be added, wear resistant steel ball size (200mm, Phi Phi balls 140mm, 120mm, 100mm, Phi Phi Phi 80mm, Phi 70mm, Phi 60mm 40mm, 20mm, Phi Phi) add size. The addition amount of wear resistant steel ball: different ball mill type the total amount of different ball. For example, Phi 1500 * 3000 ball mill (processing capacity of 100 - 150 tons) the maximum load of ball 9.5 to 10 tons.
Add the first wearable steel ball ball (Phi Phi 120mm - 100mm 30%--40%, 80mm) for the ball, ball accounted for 40%--30% (phi 60 and phi 40mm) accounted for 30%, why in the running process of ball mill ball quantity added only 80%, because the installation of ball mill, ball mill gear meshing size needs, and volume (ore at) is to increase gradually, until two or three days after the normal continuous operation of the ball mill, ball mill check size gear, when everything is normal, open the ball into the hole two to add the remaining 20% ball under Gaidi.
The ball mill boot operating normally, each class of wear resistant steel ball by 3:4:3 (adding 120mm 3, Phi Phi 100mm, Phi 4 80mm 3) add. Note: small ball to add just the first ball with. Because, when the normal operation of the ball and the ball, ball and ore, steel ball and ball mill lining plate between the reasonable friction, will make the wear increased, so that large ball mill small (ball), in the ball. So under normal circumstances, do not need to add a small ball. With the ball is that there is no monomer dissociation in useful mineral granularity, when grinding fineness is not up to the requirements of floatation, you can add some balls. In order to keep the ball bearing filling rate and the reasonable ratio of ball to the ball, the ball is kept in the running process.
The weight of the steel ball is added, which is based on the quality of the wear-resistant steel ball. Better wear resistant steel ball. The best (good quality) wear resistant steel ball is added by processing a ton of ore per ton of ore (i.e., 0.8kg) of the general wear-resistant steel ball to handle a ton of ore (1.2kg - 1kg). The proportion of different ball mill is different from the size of the ball mill.
Hebei Norson steel Mstar Technology Ltd in 2012 with two university cooperation, combined with the steel developed a number of new special wear-resistant materials, quenching critical diameter from 60-170mm, making the ball hardness high (65-60HRC), the impact is larger than 18J, wear resistance, corrosion resistance, ball test of more than 15000 times, the broken rate less than or equal to 0.5%. In the current steel ball industry is a first-class products, improve the mechanical performance of 2-3 times. Recently through a professional R & D team, multi party cooperation, research and summarized a set of different ore, working conditions, develop a suitable special material to produce special steel ball, can meet customer's low wear, reduce the cost of the effect.