Fabrication and characterization of a novel foam ceramic material based on coal gasification slags
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In this paper, the feasibility of recycling coal gasification slag by high temperature foaming process to fabricate foal ceramicinsulation board has been investigated. Silicon carbide (SiC) was added as the foam agent, and the foaming mechanism wasalso discussed. The results showed that utilization rate of the coal gasification prepared to the foam ceramic new wall materialwas up to 77% and the best dosage of SiC was 3%. Moreover, the relatively optimum parameters were obtained at thesintering temperature of 1,160 ºC for 3h with 77% slags, 20% clay and 3% SiC. Furthermore, compression strength reaches1.18 MPa, the bulk density and heat conductivity coefficient value are 0.21 g/cm3 and 0.05 W/(m·k), respectively.
Abstract
In this paper, the feasibility of recycling coal gasification slag by high temperature foaming process to fabricate foal ceramicinsulation board has been investigated. Silicon carbide (SiC) was added as the foam agent, and the foaming mechanism wasalso discussed. The results showed that utilization rate of the coal gasification prepared to the foam ceramic new wall materialwas up to 77% and the best dosage of SiC was 3%. Moreover, the relatively optimum parameters were obtained at thesintering temperature of 1,160 ºC for 3h with 77% slags, 20% clay and 3% SiC. Furthermore, compression strength reaches1.18 MPa, the bulk density and heat conductivity coefficient value are 0.21 g/cm3 and 0.05 W/(m·k), respectively.
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