在较长的期间内 ,用球磨机由较粗给料获得细颗粒。传统的粉末冶金使用各种类型的球磨机 ,以研磨原料而产生微细粉末。然而 ,在传统的球磨机中 ,滚动的球本身间及与粉末颗粒间的能量交换是混乱的。这个过程特点是 ,球呈无规则运动、粉体磨细不充分并且无法控制。为了得到均匀和可重现的细磨产品 ,很好的控制磨矿过程 ,特别是控制球的运动是很重要的。为此 ,在本文中我们报道了一种用于机械合金化的球磨机的研制 ,并且描述了这种磨机的性能。在本设计中 ,将磁场引入到球磨机中。通过调控外加磁场可以得到各种可控制的和可重现的操作模式。这里所用的改进型的球磨机直径为 12 5cm、宽为 8 75cm。试验证明 ,在磨石灰石时控制球的运动可节省磨矿能耗 4 0 % ,并可得到更均匀的细磨产品 For a longer period of time, fine particles were obtained from the coarser feed using a ball mill. Conventional powder metallurgy uses various types of ball mills to grind raw materials to produce fine powders. However, in conventional ball mills, the energy exchange between the rolling balls themselves and with the powder particles is disorganized. The process is characterized by irregular movement of the ball, inadequate grinding of the powder, and uncontrollableness. In order to obtain a uniform and reproducible fine grinding product, it is very important to control the grinding process well, especially to control the movement of the ball. For this reason, in this paper we report the development of a ball mill for mechanical alloying and describe the performance of this mill. In this design, a magnetic field is introduced into the ball mill. By controlling the applied magnetic field can be a variety of controllable and reproducible mode of operation. The modified ball mill used here has a diameter of 12 5 cm and a width of 8 75 cm. Experiments have shown that controlling the movement of the ball while grinding limestone can save 40% of the energy consumed in grinding and provide a more uniform fine grinding product