Views: 89 Author: Bella Publish Time: 2018-07-09 Origin: SEPPE Technologies
Mullite sand is aluminum silicate refractory materials, normally used in stainless steel precision casting technology. Refractoriness around 1750 degrees, Mullite sand content more aluminum and lower iron to show that the quality is more better, content lower dust to show that the quality is more better. Mullite sand is made by kaolin through high heat sintering. Mullite sand origin in mainly distributed in the zhangqiu shandong and north of anhui and so on.
Chemical data for M70:
Al2O3(%) | Fe2O3(%) | TiO2(%) | CaO(%) | MgO(%) | Na2O(%) | B.D.(g/cm3) | T.C.(℃) | Water Absorption |
70-73 | ≤1 | ≤2.5 | ≤0.25 | ≤0.55 | ≤0.2 | 2.85 | 1830 | ≤1.5 |
Mullite sand general type are 8-16 orders, 16-30 mesh, 30-60 mesh, 60-80 mesh, 80-120 mesh;
Advantages: Pouring casting, Easy to shell, Ametabolic, not easy to reduced scale, bright and clean, high yield.
