Suitable Compositions for Making Insulation Firebricks Using Raw Materials from the Northeast of Thailand

Abstract

The characteristics and effects of raw materials and their  compositions for making insulating firebricks were studied. The raw materials used are rice-husk ash, ball clay from Sakolnakorn, and kaolin from Udonthani. The compositions were varied to be 17 formulae. After mixing and shaping, the samples were then fired at 1300⁰C for 30 minutes. Subsequently, some important properties were tested following standard methods set by the office of Industrial Products Standards, Ministry of Industry, The obtained results show that there are 8 formulae of prepared firebricks having essential properties which meet the standard.