Ball is the material being broken, and then smash the key equipment. Is one of the fine grinding machinery widely used in industrial production. The steel ball is the important basic parts of ball mill, especially precision industrial ball plays a great role in the development of national economy. Widely used in cement plant, power plant, etc.. The level of chromium multi element alloy steel, high chromium multi element alloy casting and forging, plays a great role in national economic development. In some special conditions, often need to complete the ball of special materials, under different environmental conditions to achieve the desired function. In fact, some special steel material has been widely used in various fields of national economy, including high chromium steel and high chromium steel; forging; low chromium steel; low chromium steel forging; chromium series lining; manganese liner; hammer; alloy steel ball; alloy lining board; all kinds of wear-resistant materials. Application of them, not only promoted the development of steel ball production industry, but also to promote the technology development of related industries and the progress of science and technology.

On the ball mill steel ball diameter requirements: impact mill output is not only influenced by steel ball loading, with the diameter of the steel ball. Is required to maintain a certain proportion between the ball diameter and different ball diameter ball, general cylinder ball diameter size in the range of 25 -- 60mm. If the cylinder is large diameter ball, the large impact force, favorable to break coal, but due to the gap between the ball and the ball, a relatively small surface area, extrusion, grinding effect is reduced, are detrimental to the mill output and fineness of pulverized coal. Small diameter steel ball in the tube too much, the impact force is small, can make the coal output drop, at the same time, the steel ball surface area increases relatively, the steel ball wear increase, coal grinding power consumption rise.

Proper use of steel ball: ball mill installation has a run in process, in the process of running, the ball first added amount, the maximum charge accounted for 80% of the amount of ball mill, ball addition proportion according to the size of ball diameter (120 mm diameter, 100 mm diameter, 80 mm, 60 mm, Phi Phi 40 mm size add). Different types of the different load of ball mill. For example, MQG1500 * 3000 largest ball mill ball charge 9.5 to 10 tons. Add the ball ball first (120 mm and 100 mm) accounted for 30% - 40%, the ball 80 mm accounted for 40% - 30%, the ball (60 and 40 mm) accounted for 30%.