Characteristics of fly ash residue after extracting aluminium oxide and the research on preparation of lightweight insulation board
JIN Biao
WANG Xiao
YANG Liushuan
Abstract：To achive effective utilization of the fly ash residue after extracting aluminium oxide,the basic characteristics of the residue and the preparation of lightweight insulation board were studied. The chemical composition,mineral composition,morphology, size distribution are investigated by means of XRF,XRD,SEM and Laser particle size analyzer. The results show that the residue is mainly consisted of C2S,CaCO3and Ca(OH)2with large specific surface area and porous structure. Based on characteristics of the residue,the fly ash residue after extracting aluminium oxide is used as the main raw materials to prepare the lightweight insulation board. And the optimal ratio of components was follows:35% of fly ash residue,20% of FGD gypsum,15% of thermal insulation mortar,and 30% of water.
Keywords：fly ash residue after extracting aluminium oxidelightweight insulation boardthermal conductivityparticle characteristic
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 25-28 )