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PRODUCTION AND CHARACTERIZATION OF SILICA REFRACTORY FROM RICE HUSK

IYENAGBE, UGHEOKE BENJAMIN (2013) PRODUCTION AND CHARACTERIZATION OF SILICA REFRACTORY FROM RICE HUSK. PhD thesis, Universiti Teknologi PETRONAS.

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Abstract

Rice husk was thought to be a renewable source of good silica, which can help prevent cracking of silica refractories in the temperature range 100-600°C. The work reported in this thesis aimed to develop and optimize a fast process for high purity silica production from rice husk, as well as apply the silica produced from the process to carry out optimized laboratory scale manufacture of hot-face, stand-alone silica refractory. Thus, a hydro thermo-baric (HTB) process was developed to aid the fast production of rice husk silica (RHS). The parameters of the HTB process were optimized using full factorial design of experiments. The RHS obtained from the HTB process was characterized in terms of particle size, pore volume, surface area, structure and morphology. Also, the parameters that affect the production of RHS refractory using PEG8000 as binder and Ca(OH)2 as dopant (mineralizer) were investigated and their optimal values obtained using the one-variable-at-a-time (OVAT) method.

Item Type: Thesis (PhD)
Academic Subject : Academic Department - Mechanical Engineering - Materials - Engineering materials - Metals alloys - Fabrication
Subject: T Technology > TJ Mechanical engineering and machinery
Divisions: Engineering > Mechanical
Depositing User: Ahmad Suhairi Mohamed Lazim
Date Deposited: 30 Mar 2015 11:53
Last Modified: 25 Jan 2017 09:39
URI: http://utpedia.utp.edu.my/id/eprint/15292

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