Study for development of a construction ceramic material from metallurgical wastes using a DOE approach
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A design of experiments methodology was carried out for the development of a construction ceramic material using electricarc furnace slag (EAFS) and other metallurgical wastes such as aluminum dross (AD) and green moulding sand (GMS). The factors evaluated were %wt. of bentonite, ratio EAFS/AD, fineness index of raw materials (AFS number), sinteringtemperature and sintering time. The specimens were sintered and subsequently their compressive strength was evaluated. Itwas determined that sintering temperature, AFS number and EAFS/AD ratio had the greatest impact on the compressivestrength. The best conditions to achieve strengths for use of this material as brick, (10.3 MPa), were high temperaturesof sintering, fine particle size, high ratio EAFS/AD, low contents of bentonite and short sintering times. Following theseconditions, compressive strengths >21 MPa were achieved. Therefore, it is feasible the use of EAFS-AD mixture as a partialsubstitute for the elaboration of structural bricks with a superior compressive strength.
Abstract
A design of experiments methodology was carried out for the development of a construction ceramic material using electricarc furnace slag (EAFS) and other metallurgical wastes such as aluminum dross (AD) and green moulding sand (GMS). The factors evaluated were %wt. of bentonite, ratio EAFS/AD, fineness index of raw materials (AFS number), sinteringtemperature and sintering time. The specimens were sintered and subsequently their compressive strength was evaluated. Itwas determined that sintering temperature, AFS number and EAFS/AD ratio had the greatest impact on the compressivestrength. The best conditions to achieve strengths for use of this material as brick, (10.3 MPa), were high temperaturesof sintering, fine particle size, high ratio EAFS/AD, low contents of bentonite and short sintering times. Following theseconditions, compressive strengths >21 MPa were achieved. Therefore, it is feasible the use of EAFS-AD mixture as a partialsubstitute for the elaboration of structural bricks with a superior compressive strength.
참고문헌 (33)
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