| 摘要 |
The present invention relates to grinding media for fragmentation and grinding of ores, rock and earth mass and other materials mostly in drum mills, and it finds application in ore mining, construction and other industrial branches. The grinding media have the form of spheroidal tetrahedron, obtained from the crossing of four spheres with equal radii, the centers of each one lie on the top of the surface of the others and are tips of regular tetrahedron. The radii of the spheres are equal to the regular tetrahedron's edge. At least one of the tips (1) of the spheroidal tetrahedron is flatly beveled and the rest are rounded, so one and the same mass of material is taken away from each tip (1). It is possible the edges (2) of the grinding media to be rounded, beveled or ribbed. The ribbing can be even or arch-shaped. |
