低水泥用量耐火材料在球团回转窑中的应用

Application of Low Cement Refractory Material in Rotary Pelletizing Kiln

论述了低水泥用量耐火材料的优越性和球团回转窑的烘炉制度。从低水泥用量耐火材料的研制与应用、耐火材料锚固件材质和形状的确定、回转窑预制耐火砖规格的确定、回转窑砌注方法的选择、回转窑耐火材料施工质量的控制等方面介绍了首钢球团厂为提高球团回转窑热震稳定性所进行的一系列研究与实践。通过不断的研究和改进,首钢球团厂回转窑的热震稳定性得到了有效提高,整体使用寿命由1.5 a提高到2.5 a以上,为球团回转窑用高技术耐火材料的推广应用提供了重要的经验,促进了链篦机—回转窑—环冷机氧化球团技术在国内的迅猛发展。

The superiority of low cement refractory material and the heating-up system of rotary palletizing kiln are discussed. The paper describes the series of research and practice made in the Sintering Plant of Capital Steel to improve the heat-shock stability of the rotary palletizing kiln, including the development and application of low cement refractory material, determination of the material quality and shape of the anchoring pieces for refractory material, the size of the prefabricated firebricks for the rotary kiln, the selection of the rotary kiln lining method and the control of the quality of refractory material construction in the rotary kiln. The heat-shock stability of the rotary kiln in the Sintering Plant of Capital Steel has been effectively raised through continuous research and improvement with the total service life lifted from 1.5 a to above 2.5 a. which has provided important experience in spreading the application of hi-tech refractory material in rotary palletizing kiln and promoted the rapid development of the domestic grate-rotary kiln-circular cooler oxide palletizing technology.