Combined refractory materials due to their physical and mechanical properties and high stability have been widely used in recent years in metallurgical assemblies with sudden changes in temperature regime, as well as during prolonged downtime or temporary shutdown. Silica refractory can be prepared from clay, chamotte with the addition of silicon production waste (microsilica), as well as with addition of aluminum fluoride production waste (silica gel). In the course of research samples of refractories with different content of modifying additions of technogenic waste in the form of microsilica and silica gel are prepared. The physical and mechanical properties of samples are studied. Examples of using microsilica and silica gel are considered, and based on the results obtained an optimum composition is proposed providing refractory material with high strength and thermal conductivity. Improved properties suggest that microsilica and silica gel may be used as raw materials for the manufacture of combined refractory materials.

组合耐火材料由于其物理和机械性能以及高稳定性，近年来已广泛用于温度状态突然变化以及长时间停机或临时停机的冶金组件中。硅质耐火材料可以由粘土，黏土制备，添加硅生产废料（微硅粉），以及添加氟化铝生产废料（硅胶）。在研究过程中，制备了具有不同含量的微硅粉和硅胶形式的改性废料的改性添加量的耐火材料样品。研究了样品的物理和机械性能。考虑使用微二氧化硅和硅胶的示例，并且基于获得的结果，提出了一种具有高强度和导热性的耐火材料的最佳组合物。改进的性能表明，微二氧化硅和硅胶可以用作制造复合耐火材料的原料。