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Preparation and Study of Glass-ceramics Based on Converter Slag

Author: PengFeng
Tutor: LiBaoWei；GaoZhanYong
School: Inner Mongolia University of Science and Technology
Course: Materials Science
Keywords: Converter slag Glass-ceramic Heat treatment Microstructure Performance
CLC: TQ171.1
Type: Master's thesis
Year: 2010
Downloads: 135
Quote: 0
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Abstract


Steel slag is iron and steel enterprises in the smelting process emissions from solid waste , emissions , approximately crude steel production of 12% to 20% , converter slag , slag and electric furnace steelmaking furnace generally be divided into slag, converter slag in China accounts for about 65% of the total amount of slag . The traditional comprehensive utilization of steel slag mainly used as a cement raw material or for road construction materials , there is the low utilization rate is not high value - added . In this paper, clad steel converter slag as the main raw material , adding a certain amount of CaF2 flux based on the use of converter slag rich in Fe 2 < / sub > O 3 ( FeO the main phase of augite ) and a small amount of TiO2 as nucleating agents were prepared by fusion method , the grain size of 0.2 slag Glass . DSC, XRD, SEM were used to study the crystallization behavior of the base glass and glass-ceramic microstructure . Converter slag and ZnO addition on the basis of glass crystallization products of the performance . Heat treatment parameters on the flexural strength of the products by orthogonal experiment to determine the optimum heat treatment system . Experimental results show that of converter slag addition on the crystallization ability of the base glass , glass-ceramic obtained crystal phase composition and mechanical properties of significant enhanced with the introduction of the increase , the crystallization ability of the base glass , glass continuously improve the mechanical properties of the ceramic , the amount of the introduction of converter slag can reach more than 50 wt % . ZnO can improve the flexural strength of the glass-ceramics , to change its main crystalline phase, the introduction of more appropriate amount in 3wt.% . Heat treatment system for the preparation of the glass-ceramic also have a certain impact , bending strength as an indicator , the most significant influence on the crystallization temperature , with minimal impact for the nucleation temperature . Optimal heat treatment system for a rate of 6 ° C / min of heating to 625 ° C insulation 2h , and then heated to 860 ° C at a rate of 3 ℃ / min for 2h or 6h .

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CLC: > Industrial Technology > Chemical Industry > Silicate > Glass Industry > Basic theory
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