Effect of Dan Kwian Wood Ash and Tapioca Waste on Insulating Firebrick

Abstract

Currently, the development of insulating fire bricks for Dan Kwian Kiln is firing temperature below 1,300 °C. A literature review in a proposal to investigate and development of the insulating fire bricks for performance benefit of Dan Kwian Kiln will find little. This research was development of Insulating Firebrick for Dan Kwian Kiln. An X-ray diffraction (XRD) and X-ray fluorescent (XRF) techniques was used to investigate there phase and chemical composition of Dan Kwian clay and Dan Kwian wood ash. Mixtures ratios and compound are consist of Dan Kwian clay, Kaolinite clay, Dan Kwian wood ash and Tapioca waste. Then, all samples fired at 1,250 °C under oxidizing atmosphere. Investigation of Physical and Mechanical Properties such as drying and firing shrinkage, water absorption, porosity, density, specific gravity and modulus of rupture. The results indicated that the chemical component of Dan Kwian clay are consist of quartz (SiO₂) 70.44 wt.%, Alumina (Al₂O₃) 19.10 wt.%, iron oxide (Fe₂O₃) 7.40 wt.%, etc. The results of chemical analysis of Dan Kwian wood ash are calcium oxide (CaO) 56.54 wt.%, silica (SiO₂) 24.21 wt.%, Alumina (Al₂O₃) 10.50 wt.%, etc. Moreover, the mixture ratio of P5 consists of Dan Kwian clay 20 wt.%, Kaolinite clay 30 wt.%, Dan Kwian wood ash 30 wt.% and tapioca waste 10 wt.%. and also P6 consists of Dan Kwian clay 20 wt.%, Kaolinite clay 40 wt.%, Dan Kwian wood ash 30 wt.% and tapioca waste 20 wt.% The maximum porosity achieved was 47.20% and 45.13%, respectively. It can be used to produce insulating firebrick.