Dissertation > Industrial Technology > Chemical Industry > Silicate > The refractory industry > Refractory > Various ingredients of refractories

Study of Performance of Cordierite Combined Mullite Products

Author ZhangXiaoYun
Tutor ZhangGuoDong
School Liaoning University of Science and Technology
Course Materials Science
Keywords cordierite mullite thermal expansion microstructure
CLC TQ175.71
Type Master's thesis
Year 2012
Downloads 36
Quotes 0
Download Dissertation

Cordierite-mullite composites based on MgO-Al2O3-SiO2 system-based material, not only has good thermal expansion and thermal shock resistance and other high-temperature performance, but also has excellent electrical insulation. It has a wide range of applications from refractory to the computer substrate. In this paper, the use of light-burned MgO powder, pyrophyllite powder, combined with the clay,α-Al2O3, talc, flint clay, bauxite and other raw materials synthesize cordierite material and cordierite-mullite composites, the design test programs: Using the above raw material prepared reasonably the four synthetic cordierite raw material formulations and four synthetic cordierite - mullite products recipes, samples for testing will be make by pressure molding machine after mixing, and sintered with different temperature and holding time , that are studied that sintering conditions and the composition of different raw materials affect on the performance of the synthetic cordierite materials and cordierite-mullite products. The test results show that: By holding time is 6 hours at 1330℃, performances of synthetic cordierite by the 4# recipe are better, and the cordierite samples have low thermal expansion and content of synthetic cordierite is most. By holding time is 6 hours at 1330℃, performances of synthetic cordierite-mullite products that are composed by different size flint, cordierite clinker and 4# total milling power are better, and it has highest load softening point. When dosage of cordierite clinker is 15 percent, performances of synthetic cordierite-mullite products are superior than others, and the crystallization of products are best. When dosage of cordierite clinker is 20 percent, the products have the best thermal expansion.

Related Dissertations
More Dissertations