基于响应面法的交叉筛工艺参数优化研究

    Study on optimization of process parameters of cross-rolling screen based on response surface methodology

    • 摘要: 交叉筛作为一种创新型湿黏细粒煤干法深度筛分装备,能够有效应对干法筛分过程中常见的“筛面堵孔”难题,展现出优异的性能优势。针对交叉筛工艺参数优化的技术需求,研制了交叉筛试验样机,并结合工业应用实际,选取枣庄矿业(集团)有限责任公司下属选煤厂实际生产煤样开展筛分试验;通过方差分析和响应面法,系统探究了给料率、筛轴转速与筛面倾角对筛分效率的影响规律,并分析得到筛分效率最佳的工艺参数组合。结果表明,三种因素对筛分效率的显著性排序为:给料率 > 筛轴转速 > 筛面倾角;筛分效率最优的筛分工艺参数组合为:给料率为 4.73 kg/s,筛轴转速为75.67 r/min,筛面倾角为14.61°,此时筛分效率为89.78%。所得研究结果可为交叉筛的工艺参数智能调控提供理论基础。

       

      Abstract: As an innovative device for the dry deep screening of wet and sticky fine coal, the cross-rolling screen effectively addresses the common “screen blinding” challenge in dry screening processes, demonstrating superior performance advantages. To meet the technical requirements for process parameter optimization, an experimental prototype of the cross-rolling screen was developed. Industrial coal samples from a coal preparation plant under Zaozhuang Mining (Group) Co. Ltd. were utilized for screening tests. Through Analysis of Variance (ANOVA) and Response Surface Methodology (RSM), the influence patterns of feed rate, screen shaft rotation speed, and screen inclination angle on screening efficiency were systematically investigated, and the optimal combination of process parameters was identified. The results indicate that the significance of the three factors on screening efficiency follows the order: feed rate > screen shaft rotation speed > screen inclination angle. The optimal combination of process parameters for screening efficiency was determined to be: feed rate was 4.73 kg/s, screen shaft rotation speed was 75.67 r/min, and screen inclination angle was 14.61°, at this time the screening efficiency was 89.78%. The research findings provide a theoretical foundation for the intelligent control of process parameters for cross-rolling screens.

       

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