FACULTY OF MECHANICAL AND AEROSPACE ENGINEERING INSTITUT TEKNOLOGI BANDUNG

• Main Author: Zulfan Indi, Akmal
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/61678
• Institution: Institut Teknologi Bandung

Refractories are materials that can withstand a high temperature without chaning it’s characteristic. With those kind of characteristics, refractories always used as a firing furnace for material’s processing. One of refractories that oftenly used is magnesia-based refractory that used as a slag lining because of it’s mechanical strength and chemical resistance to slag attack. Beside it’s excellent performance, MgO have a disadvantages against thermal shock. So, carbon added into the magnesia-based refractory to improve the thermal shock resistance. But carbons are easily oxidized, so spinel (MgAl2O4) are added either thru in-situ process or preformed. In this research, spinel effect on MgO characteristics are studied. Spinel showed a better performance in porosity, HMOR (Hot Modulus of Rupture), TSR (Thermal Shock Resistance), penetration resistance and oxidation resistance. Also, the in-situ forming spinel proved that it gives better performance than preformed spinel on porosity, HMOR, and oxidation resistance. It also found that porosity affecting the HMOR and oxidation resistance, but not affecting thermal shock resistance and less effective on penetration resistance.