机制砂绿色制备工艺仿真模拟及其参数优化

Green Preparation Process Simulation and Its Parameter Optimization of Manufactured Sand

摘要:

基于离散元对机制砂粗碎、中细碎、筛分及运输阶段工艺的关键参数进行了仿真模拟，优化了机制砂绿色制备的关键参数，明确了其对机制砂品质的影响规律，并在大型机制骨料生产企业进行了应用。结果表明：机制砂的粗碎和中细碎阶段可通过调节破碎设备排料口尺寸提高岩石破碎效率、降低破碎能耗、优化破碎后岩石粒径分布以及减小岩石对设备的磨损；筛分阶段振动筛筛网倾斜角度宜为10°~15°，运输阶段运输带布置角度宜为16°。

Abstract:

Simulations based on discrete elements were conducted on the key parameters of the process of coarse crushing， medium-fine crushing， screening and transportation stage of manufactured sand. Key parameters of green preparation of manufactured sand were optimized， and the influence rules on the quality of manufactured sand were clarified. The findings were then applied in a large-scale manufactured aggregate production enterprise. The results show that during the coarse crushing and medium-fine crushing stages of manufactured sand preparation， adjusting the discharge opening size of the crushing equipment can improve rock crushing efficiency， reduce crushing energy consumption， optimize the particle size distribution of the crushed rock， and reduce wear on the equipment caused by the rock.The tilt angle of the vibrating screen in the screening stage should be between 10° and 15°， and the layout angle of the conveyer belt should be 16° during the transportation stage.