Study on crushing of gangue in coal-based solid waste by blasting of ex-plosive
In order to meet the requirements of rapid crushing of large amount particles of coal gangue in coal-based solid waste,the crushing device under open and nearly closed conditions were designed by using the crushing method of blasting of explosive.The crushing of coal gangue in coal-based solid waste by blasting of explosive was studied theoretically and experimentally.The results show that when the shock wave generated by the explosion of explosives is used to crush the large particle coal gangue in the coal-based solid waste,the crushing process of coal gangue starts from external spallation or collapse due to the reflection of the shock wave.In addition,compared with the open system,the near-closed condition can effectively improve the crushing effect of coal gangue.If the loading capacity of coal gangue in the crushing device is further expanded and the amount of blasting agent required for crushing is increased,the rapid crushing capacity of coal gangue is expected to be greatly improved.
coal-based solid wastegangueblasting of explosivecrushing effectgreen filling
万方数据
维普
