The latest generation of refractories (lightweight ceramic-fiber products) is finding increasingly wide use in furnace construction, and abroad these materials have almost completely replaced the traditional brick lining. Fibrous refractories have the following advantages: low thermal conductivity (5-6 times lower than traditional refractories) and good heat-insulating ability; their low density (as low as 150 kg/m~3) and the fact that they can be made in the form of coils, slabs, and mats make them easy to install; the low heat capacity of the fibrous materials makes it possible to speed up the heating and shutdown of the fur naces (in a 2-3-h cycle); the wide range of refractoriness of the products (700-1400 deg C) allows their differentiated use, with the specific application depending on the temperature regime of the furnace or different sections of it. Sheet-rolling shop No. 1 at the Orsk-Khalilovo Metallurgical Combine (OKhMK) has used fibrous refractories to line the flues of its roller-hearth heat treatment furnaces. Those furnaces were rebuilt after their long period of service (more than 33 year) necessitated emergency repairs.
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机译：最新一代的耐火材料（轻质陶瓷纤维产品）在熔炉结构中的使用越来越广泛，在国外，这些材料几乎已完全取代了传统的砖衬。纤维质耐火材料具有以下优点：导热系数低（比传统耐火材料低5-6倍）和良好的隔热能力;它们的密度低（低至150 kg / m〜3），并且可以以卷材，平板和垫子的形式制成，因此易于安装;纤维材料的低热容量使得可以加快炉子的加热和停机时间（2-3小时）。产品的耐火性范围很广（700-1400摄氏度），可以区分其用途，具体应用取决于炉子或炉子不同部分的温度范围。奥尔斯克-哈利洛沃冶金联合公司（OKhMK）的1号轧制车间使用纤维耐火材料来衬砌其辊底式热处理炉的烟道。这些熔炉在长期使用（超过33年）后需要紧急维修，因此进行了重建。
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