预磨机碎磨机理分析及能耗实验研究.pdfVIP

size, motor power consumption both for the comprehensive evaluation index cases to get the optimal experiment scheme is: the upper crushing cavity rotary speed of 9 m/s, lower crushing cavity rotary speed of 9 m/s, medium filling rate is 25%, size medium filling ratio of 75%; (4) Employing the data fitting method, the power consumption of the experimental data for further analysis, through the parameter optimization design to meet the pre-mill case of nesting size, power consumption the most hours of each parameter values for the upper crushing chamber rotary speed 9.2m / s, the lower the crushing chamber rotary speed 9.6 m / s, media fills rate of 23%, the size of the media filling ratio 69%;Adopts the optimized results of the experiment, and compared with before optimization data, the whole discharge size fell by 16% after optimization， Motor power consumption reduced by 21.4%.the optimization effect is obvious. In summary, the vertical pre-mill has good application prospect, and this research will lay the foundation for the further theoretical research and application of vertical pre-mill. Key words: Key words: KKeeyywwoorrddss::Vertical pre-mill, More crushing less grinding, Crushing mechanism, Orthogonal test, Parameter optimization. III 目 录 目 录 目目 录录 摘要 I Abstract II 目 录 IV 第一章 绪论 1 1.1 破磨理论的发展 1 1.2 物料破碎方法 3 1.3 球磨机节能降耗的发展阻力 4 1.4 预粉磨技术的发展 4 1.5 论文的提出及研究内容 8 1.5.1 课题来源与背景 9 1.5.2 论文的研究内容 9 第二章 预磨机结构分析及预磨机理研究 11 2.1 预磨机结构及工作原理分析 11 2.11预磨机结构及工作参数 11 2.12预磨机的工作原理 12 2.2 预磨机的破碎机理分析 13 2.3 本章小结 15 第三章 立式预磨机介质运动学研究 16 3.1 预磨介质在