refractory materials

  What characteristics should blast furnace gunning material have? 1 The original furnace refractory material of blast furnace is fully utilized, and the consumption of refractory material is reduced. 2. The gunning operation time is short, the intermediate repair time is saved, and the blast furnace operation rate is improved. ) significantly reduces the heat that needs to be taken away by cooling during major and medium repairs of the blast furnace, thereby reducing energy consumption. 4) The construction of gunning operation is convenient. After gunning, it is beneficial to maintain a reasonable furnace type, improve the distribution of charge and gas flow, improve the utilization of gas energy, and play a role in increasing production and consumption. What are the main methods of blast furnace gunning and gunning materials ? Blast furnace gunning method gunning materials can generally be divided into the following three ways: (1) Ordinary cold gunning. Generally, scaffol

  How to improve the thermal shock resistance of high alumina bricks ? Using grade 1 bauxite clinker and fused white corundum powder as raw materials, adding an appropriate amount of expansion agent, forming and heat treatment at 800 ℃, high-alumina bricks with good thermal shock stability can be obtained Using grade 1 bauxite clinker and fused white corundum powder as raw materials, adding an appropriate amount of expansion agent, molding and heat treatment at 800 ℃, high-alumina bricks with good thermal shock stability can be obtained. in The chemical composition of grade 1 bauxite clinker is (%): Al2O3: 83.50, SiO2: 9.39, Fe2O3: 1.29, K2O+Na2O: 0.86 The Al2O3 content of fused white corundum powder is 95.36% Clay particle ratio: 15~35% of first-grade soil clinker <5mm, 20~40% of first-grade clinker fine powder <0.088mm, 5~10% of fused white corundum powder, andalusite and Sillimanite compound expansion agent 6~15%, chemical binder 6~10%. Mixing is carried out in a mi