球磨机功率吸收的研究

<正> 一、引言球磨机具有结构比较简单、单体容量大、破碎比高、产量大、连续运行性能好等优点,成为目前细磨的一种主要设备,广泛地应用于选矿、水泥、陶瓷和化学工业。长期以来,人们一直在致力干改进和完善球磨机的工作性能,但迄今为止,能量消耗高、作用效率低仍然是球磨机的主要缺点。如果将压应力     

论大学教学的探究性与师生关系的定位

大学的教学具有探究性特征。平等、对话、共享的师生关系是这一特征充分体现的条件。就我国目前的大学师生关系而言，教师和学生都必须改变传统的角色定位，才能实现教学的良性互动，达到培养创新人才的目的。     

高压料层粉碎理论的应用

在高压辊磨机实际生产中 ,采用“料饼松散再压”新工艺可以提高破碎概率和细粒级产率 ,进一步降低粉碎比能耗 ,同时还可以解决高压辊磨机细磨时循环负荷过高这一难题。研究表明 ,所有的脆性物料都可以在干磨或湿磨状态下采用高压辊磨机粉碎。与棒磨机和球磨机相比 ,高压辊磨机的比能耗低 ,过粉碎减少 ,节能达2 0 % - 5 0 %。     

联邦德国粉碎设备的现状

物料粉碎在联邦德国国民经济中占有重要地位,每年需要进行粉碎的物料达9亿吨左右。能量消耗占总发电量的4％,费用占整个工业产值的1％,因此粉碎机械设备也相应得到了发展。目前,联邦德国的粉碎机械设备,无论是类型、规格,还是产品质量,在世界上都占有重要地位,产品远销世界各国。在当今原材料恶化,需求量增长和次生资源突起的形势下,联邦德国依赖于它的工业基础和现代科学技术,不断地完善现有的粉碎机     

Cement industry control system based on multi agent

Cement production is characterized by its great capacity, long-time delay, multi variables, difficult measurement and multi disturbances. According to the distributed intelligent control strategy based on the multi agent, the multi agent control system of cement production is built, which includes integrated optimal control and diagnosis control. The distributed and multiple level structure of multi agent system for the cement control is studied. The optimal agent is in the distributed state, which aims at the partial process of the cement production, and forms the optimal layer. The diagnosis agent located on the diagnosis layer is the diagnosis unit which aims at the whole process of the cement production, and the central management unit of the system. The system cooperation is realized by the communication among optimal agents and diagnosis agent. The architecture of the optimal agent and the diagnosis agent are designed. The detailed functions of the optimal agent and the diagnosis agent are analyzed.At last the realization methods of the agents are given, and the application of the multi agent control system is presented. The multi agent system has been successfully applied to the off-line control of one cement plant with capacity of 5000 t/d. The results show that the average yield of the clinker increases 9.3% and the coal consumption decreases 7.5 kg/t.     

煤的高浓度细磨研究

在使用添加剂的情况下,对煤的高浓度细磨进行了工艺因素与能耗关系的研究,讨论了操作控制的合理条件和节能的基本途径。