Author/Authors :
SÜTÇÜ, Mücahit İzmir Kâtip Çelebi Üniversitesi - Müh ve Mim Fakültesi - Malzeme Bilimi ve Mühendisliği Bölümü, Turkey , AKKURT, Sedat İzmir Yüksek Teknoloji Enstitüsü - Mühendislik Fakültesi - Makina Mühendisliği Bölümü, Turkey
Title Of Article :
Development of Lightweight Refractory Insulating Brick Using Recycled Paper Processing Waste As Alternative Raw Material
Abstract :
Production of porous anorthite heat-insulating ceramics from mixtures of fireclay (chamotte), recycled paper processing waste sludge and pore-making sawdust addition are investigated. Recycled paper processing waste was used as a suitable alternative raw material source to produce porous anorthite refractories due to their organic (cellulose fibers) and inorganic (calcium carbonate, clay minerals) content. Prepared slurry mixtures were shaped, dried and fired. Highly porous anorthite ceramics from the mixtures with up to 30% sawdust addition was successfully produced. The cellulose fibers and inorganic content of the waste provided to form micro-porosity and anorthite composition (CaO·Al2O3·2SiO2) of the fired samples, respectively. Physical properties such as bulk density, apparent porosity, percent linear change were investigated as well as the mechanical strengths and thermal conductivity values of the samples. Thermal conductivities of the samples decreased from 0.25 W/mK (1.12 g/cm^3) to 0.13 W/mK (0.64 g/cm^3) with decreasing their density. Samples were stable at high temperatures up to 1100°C, and their cold strength was sufficiently high. Produced highly porous anorthite ceramics could be used for insulation in high temperature applications.
NaturalLanguageKeyword :
Porosity , Thermal conductivity , Anorthite , Insulating firebrick , Recycled paper waste
JournalTitle :
Afyon Kocatepe University Journal Of Science and Engineering