论文部分内容阅读
近两年来,破碎、磨矿、筛分及分级方面进展很快,本文略述如下。 一.破碎 60年代以后,在固体物理方面,形成了关于弹性和塑性变形伴随晶格破裂的概念,出现了断裂力学这样一门新学科。利用上述理论及先进的测试手段,已可以解释破碎、磨矿能耗比按岩石强度理论计算高出许多倍的原因,并指出了降低能耗和克服物料过粉碎的技术方向,即所谓“物体的深层破裂”和“沿颗粒界面的选择性破裂”。如果在实际生产中能实现这一点,将是粉碎技术的重大突破。要实现沿颗粒界面的选择性破裂以
The past two years, crushing, grinding, screening and grading progressed rapidly, this article outlined below. I. Broken 60 years later, in the solid physics, formed on the elastic and plastic deformation with the lattice rupture concept, the emergence of a new discipline of fracture mechanics. Using the above theory and advanced testing methods, it is possible to explain the reasons why the energy consumption of crushing and grinding is many times higher than that calculated according to rock strength theory. The technical direction of reducing energy consumption and overcoming crushing of materials is pointed out. The so-called “object Deep rupture ”and“ selective rupture along the grain boundaries. ” If this can be achieved in actual production, it will be a major breakthrough in crushing technology. To achieve selective rupture along the particle interface