冶金工业部鞍山焦化耐火材料设计研究院在消化引进大容积焦炉设备技术、总结国产80型焦炉设备经验的基础上，结合国情而研究设计了最新一代护炉设备－JN－90型焦炉炉门、炉框、保护板，并在江都冶金机械厂试制生产成功。于10月8日通过江苏省科委和冶金厅组织的新产品鉴定。该产 Anshan Coking Refractory Design and Research Institute of Metallurgical Industry in the digestion and introduction of large volume coke oven equipment technology, based on the experience of domestic 80 coke oven equipment based on the combination of national conditions and research designed the latest generation of protection equipment - JN-90 coke oven Furnace door, furnace frame, protective plate, and Jiangdu Metallurgical Machinery Factory trial production success. On October 8 through the Jiangsu Provincial Science and Technology Commission and the Metallurgical Agency organized the identification of new products. The product