Study on Impact Crushing Characteristics of Minerals Based on Drop Weight Tests

The degree of difficulty in crushing an ore depends on the composition itself. Due to different types and compositions ores, mechanism ores during process is also different. In order quantitatively analyze impact characteristics mineral components this paper takes pure quartz, pyrrhotite, pyrite as research objects uses universal drop weight test equipment standard methods developed by JK Mineral Research Center University Queensland, Australia, conduct tests these three samples. results show that particle size distribution products wide, covering all sizes from “0” close feed size, yield each product relatively uniform. There are critical values “energy barrier” effects for impact-specific energy. energy has a significant effect product, there interactive between type. resistance sample can be characterized using Mohs hardness, characteristic parameters, level, limit value t10 size. overall characterization have good consistency.