基于Tavares模型的双齿辊破碎机破碎性能仿真分析

    Simulation analysis of the crushing performance of a double-toothed roll crusher based on the Tavares model

    • 摘要: 为估计宝日希勒露天煤矿用于剥离半连续工艺的双齿辊破碎机的破碎性能,提出了基于Tavares破碎模型的破碎性能仿真方法。研究采用EDEM离散元仿真软件,以颗粒破碎流量、粒径分布及破碎承压能力作为评价标准,构建了9 000 t/h双齿辊破碎机的破碎仿真系统,设定仿真入料粒径为100~2 000 mm,分布基于煤矿现场统计。研究结果表明:双齿辊功率响应结果与设计功率基本相符,破碎仿真系统按照设计的能力进行正常作业;破碎前的平均粒径为1 121 mm,破碎后的平均粒径28.95 mm,破碎比为38.7,满足后续带式输送机安全运输需求;双齿辊破碎机料仓质量增加速率与出料质量变化速率比值为4.6,表明该破碎机在卡车5 min/次循环卸料的条件下可以实现9 000 t/h的破碎能力。

       

      Abstract: To estimate the crushing performance of the double-toothed roller crusher used in the semi-continuous stripping process at the Baorixile Open-pit Coal Mine, a crushing performance simulation method based on the Tavares crushing model is proposed. The study employs the EDEM discrete element simulation software, with particle flow rate, particle size distribution, and crushing load-bearing capacity as evaluation criteria, to establish a crushing simulation system for a 9 000 t/h double-toothed roller crusher. The simulation input particle size is set at 100-2 000 mm, based on statistical data from the coal mine site. The results indicate that the power response of the double-toothed roller crusher aligns well with the designed power, confirming that the simulation system operates normally at the intended capacity. The average particle size before crushing is 1 121 mm, which reduced to 28.95 mm after crushing, yielding a crushing ratio of 38.7, meeting the safety requirements for subsequent belt conveyor transportation. The ratio of the mass increase rate in the crusher hopper to the mass change rate of the discharge is 4.6, demonstrating that the crusher can achieve a crushing capacity of 9 000 t/h under the condition of truck unloading cycles of 5 minutes per trip.

       

    /

    返回文章
    返回