Composite corundum rod as well as preparation method and application thereof

The invention relates to the technical field of ore grinding, and discloses a composite corundum rod and a preparation method and application thereof. The composite corundum rod comprises a rod core and a rod body arranged on the periphery of the rod core, the rod core is a square steel rod, the rod body comprises a copper-coin-shaped corundum brick, the outer circle diameter of the corundum brick is 45-120 mm, the side length of a central square hole is 20-80 mm, and the thickness of the corundum brick is 20-70 mm. The composite corundum rod is arranged in a rod mill for ore grinding, so that the yield of qualified fraction is effectively improved, and the content of iron oxide is reduced. 本发明涉及磨矿技术领域，公开了一种复合刚玉棒及其制备方法和应用。本发明的复合刚玉棒包括棒芯和设置于棒芯四周的棒身，棒芯为方形钢棒，棒身包括铜钱状刚玉砖，刚玉砖的外圆直径为45～120mm，中心方孔边长分别为20～80mm，厚度为20～70mm。将复合刚玉棒装在棒磨机中，用于磨矿，有效提高合格粒级的产率，降低了铁的氧化物含量。