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Effect of adding fused silica particles on thermal shock stability of acid resistant castables. The raw materials used in the test are mainly clay clinker particles and fine powder, and silicon fine powder and cement are used as binders. Clay uses five grades of ingredients, the particle size is 8~5, 5~3, 3~1, 1~0.088 and 0.088mm fine powder, the selected fused silica particles are 3~1mm, and the chemical composition of the main raw materials is as follows The table shows.
The raw materials with different particle sizes mentioned above are accurately weighed and mixed in a certain proportion, and the fused silica is respectively mass fractions of 0, 8 by adding fused silica particles to the clay acid-resistant castable for the furnace door of the coke oven to replace the clay particles of the same particle size. The effect of the amount of fused silica added on the properties of clay acid-resistant castables was studied, and the thermal properties and crystallinity of fused silica were discussed.
The results show that due to the addition of low-expansion coefficient fused silica, not only the thermal expansion coefficient of the material is reduced, but the difference in thermal expansion coefficient between the fused silica particles and the matrix phase is large during the thermal shock process.
The above introductions about "application characteristics of castables" and "effects of quartz particles on thermal shock stability of castables" hope to help you understand the "effects of quartz particles on thermal shock stability of castables and application characteristics". .