杭钢1号高炉有效容积342m~3,配有3座外燃式热风炉,蓄热面积90.72m~2/m~3。1987年新建时,由武汉冶金建筑研究所对外燃式热风炉球顶炉壳喷涂了保护层。喷涂材料为该所与河南巩义市联合耐火材料厂生产的FN—130中重质耐火喷涂料,平均喷涂厚度为60～70mm。该喷涂工艺及使用材料取代了传统的硅藻土、石棉板、水渣等低温、低强、松散的热风炉顶部隔热结构,从而克服了 Hangzhou Iron and Steel No. 1 blast furnace effective volume of 342m ~ 3, with three external combustion stove, thermal storage area of ​​90.72m ~ 2 / m ~ 3. 1987 when the new building by the Wuhan Institute of Metallurgical Building, Top shell sprayed protective layer. Spraying material for the Institute and Gongyi City, Henan United Refractories Factory production of FN-130 in the heavy refractory spray coating, the average spray thickness of 60 ~ 70mm. The spray process and the use of materials to replace the traditional diatomite, asbestos, water slag and other low-temperature, low-strength, loose stove top insulation structure to overcome