The Lining for Rotary Cement Kilns

Refractories and Industrial Ceramics -     

水泥回转窑用碱性砖无铬化的状况

阐述了水泥回转窑用无铬碱性砖的使用状况和分析结果，并对包括新型无铬碱性砖的开发和应用在内的今后的发展方向进行了介绍。     

The Effect of Temperature on the Lining of Rotary Cement Kilns

Effects of temperature oscillations on the thermomechanical stresses in the refractory lining of a rotary kiln are considered.     

The Effect of Temperature on the Lining of Rotary Cement Kilns

Achievements in the study of thermal effects on the lining of rotary cement kilns, both at home and abroad, are reviewed. In particular, thermal expansion of the lining and the thermal mechanical stresses associated therewith are considered.     

Effect of Hercynite Spinel on the Technological Properties of MCZ Products Used for Lining Cement Rotary Kilns

Refractories and Industrial Ceramics - Magnesia-calcium zirconate (MCZ) composite products have been tested in the transition zones of cement kilns. Such products are of interest because they are...     

回转窑用ZnO质耐火材料内衬的研究

研究了用三种实验方法制备的加入了熔融Zn的耐火材料的润湿性。采用滴定法确定了润湿角和界面张力。将耐火砖薄片浸入到液态锌熔池中以确定润湿角,并监测粘附到RM表面的Zn量及有保护层的RM表面的Zn量。从石墨、SiC、白云石 方解石和不定形产品VS-50中获得了最好的实验结果。在经济方面,后两种材料在使用ZnO质耐火材料的回转窑中进行了试验,并且对延长使用寿命有积极作用。     

Ways Toward Increasing Endurance of the Lining of Rotary Kilns

A brick mortar (the chromite-periclase filler, CPF) for the hot-face lining of rotary kilns for calcination of magnesite and its mixtures has been developed and tested. The CPF is based on a periclase-chromite mixture with the addition of aluminum and ferrophosphorus. The use of CPF makes it possible to increase the lining endurance of 90 and 170-meter rotary kilns by a factor of 2.5 and 1.5, respectively.     

ZrO2—Containing Refractories for Cement Rotary Kilns

ZrO2-Containing Refractories have been increasingly used for cement rotary kilns,This paper discusses how the properties and performance of ZrO2-Containing Refractories are improved in terms of chemical attack resistance,thermal shock resistance,thermal conductivity and mechanical stress.     

水泥回转窑用碱性炉材的技术进步

含铬耐火材料和废弃物燃料的环境问题，促进了水泥回转窑用碱性炉材的开发。由于氧化镁系炉材的耐热性和耐腐蚀性较高，一般用于过渡带。白云石系炉材的包覆性较好，多用于煅烧带。添加氧化锆及锆酸钙的尖晶石，其膨胀性低，有助于提高碱性耐火砖的抗冲击性和降低热传导率。镁尖晶石良好的微观组织不仅对改善耐腐蚀性是有效的，而且对包覆性也是很有效的。碱性炉材的发展依赖于合成原料，主要的研究课题就是降低原料的价格。     

水泥回转窑用碱性耐火材料显微结构的控制

根据显微结构特征分析研究了水泥回转窑用无铬碱性耐火材料的性能和发展。这些氧化镁基或白云石基材料,引入低膨胀性且抗侵蚀的加入物改善其显微结构。镁铝尖晶石砖是从直接加入粒状氧化铝、烧成过程中生成原生尖晶石,到直接加入预合成的尖晶石,发展至细粒晶型尖晶石再增强的含电熔尖晶石镁质砖;白云石砖以其良好的对水泥熟料的粘着性而被广泛用于水泥回转窑烧结带,加入氧化镁粉和氧化锆改善其基质增强了抗侵蚀性及抗热震稳定性;新发展的氧化镁-铁铝尖晶石和氧化镁-锰铝尖晶石耐火材料以其优越的柔性而被用于轮箍部位。     

Corrosion of Disposing Urban Domestic Wastes on Refractories for Cement Rotary Kilns

Corrosion of burning urban domestic wastes to alkali-resistant bricks and spalling-resistant high alumina bricks was researched by static crucible method and SEM in order to choose refractories for cement rotary kilns for collaboratively disposing wastes. The result indicates that the main corrosion mechanism is slag permeation and corrosion; the emitted high temperature gases containing alkali,sulfur and chlorine during burning the wastes react with refractories forming low melting point sulfate,chloride and compound salts,which metamorphose the refractories,and the loose metamorphic layer is easy to spall under thermal stress. So,corrosion resistance and spalling resistance shall be taken into account when choosing refractories for cement rotary kilns for collaboratively disposing wastes. It is suggested that decomposition furnaces should adopt spalling resistant high alumina bricks and anti-coating Si C castables,and preheating equipment should adopt high strength alkali-resistant bricks and castables.     

水泥回转窑及其耐火材料内衬

在对回转窑及其工艺进行描述后，讨论了一次及二次燃料的作用，随后解释了与烧结带用砖有关的一些问题，最后考察了不同的磨损和内衬情况。     

大力推进水混回转窑处置和利用废弃物技术的应用发展

回顾自上个世纪末以来．我国在利用水泥回转窑处置和利用废弃物方面的总体情况，肯定了取得的进步．分析了存在的问题．着重提出了今后的工作重点，对前景进行了展望。     

大力推进水泥回转窑处置和利用废弃物技术的应用发展

回顾自上个世纪末以来,我国在利用水泥回转窑处置和利用废弃物方面的总体情况,肯定了取得的进步,分析了存在的问题,着重提出了今后的工作重点,对前景进行了展望。     

水泥回转窑用无铬碱性砖的现状及使用状况

介绍了水泥回转窑用无铬碱性砖的现状和使用状况以及改善砖的抗水化性的研究结果。碱性砖推行无铬化，需要改善水泥挂窑皮的粘着性和稳定性，提高熔损性以及降低砖的热导率和改善砖存放时的抗水化性等特性。     

Damage Mechanism of Silicon Carbide-mullite Bricks for Transition Zone of Cement Rotary Kilns

In order to improve the service performance and explore the damage mechanism of silicon carbide-mullite bricks for the transition zone of cement rotary kilns,th...