高炉炉缸结构上一些问题的探讨  

Discussion on Some Problem occurred at BF Hearth Structure

作　　者：汤清华[1] 

机构地区：[1]鞍钢股份有限公司

出　　处：《炼铁》2015年第5期7-11,共5页Ironmaking

摘　　要：结合国内外一些高炉炉缸烧穿的实例,对延长高炉炉缸寿命结构上的一些问题提出了探讨。对于炉缸炉壳结构,建议凡新建或大修高炉,炉壳收缩变径至少应从炉底满铺炭砖中上部开始采取收缩,风口段有一段直段后至炉腹处再扩径,如果风口段砖衬太薄又易烧坏炉腹冷却壁冷面水管。对于炉缸炭砖砖衬结构,一是,炭砖厚度应保证有一定的厚度;二是,大块炭砖砌筑的炉缸环炭应消除水平通缝;三是,坚持好传热的顺序;四是,高度关注炭捣料的材质与施工质量。对于冷却水与冷却器结构,水质和冷却比表积应满足高炉冷却要求,以及水速和水量应同时匹配。对于死铁层深度,认为死铁层深度为炉缸直径20%,不宜继续加深。It is put forward in the paper some suggestions on hearth structure for prolonging the life of blast furnace hearth in allusion to burn through problem occurred on the BF hearths home and abroad. For hearth shell structure of newly built BF or revamped BF, it is recommended to reduce the shell diameter starting from the middle upper portion of furnace bottom carbon laver. The shell diameter at tuyere section doesn＇t change but is increased at bosh section. The brick lining at tuyere section shall not be too thin, otherwise the water pipe at cold side of bosh cooling stave will be burnt easily. For the carbon brick lining structure at hearth, it is necessary to ensure the required lining thickness and eliminate horizontal joints of lining made of ring massive carbon bricks. Furthermore, good heat transmission sequence, high material quality and construction quality of carbon ramming material also shall be ensured. For cooling water and cooler structure, both cooling water quality and specific cooling surface area shall enable sufficient blast furnace cooling, and water flow rate and quantity shall be coordinative to each other. For the deepth of pond,it shall not be higher than 20% of hearth diameter.

关 键 词：高炉 炉缸结构 冷却壁冷却比表面积 

分 类 号：TF573[冶金工程—钢铁冶金]