the role of sic and different binders on mechanical strength and compaction of silica based refractoriness materials

silica refractory bricks are used especially in the metallurgical industries, due to desirableproperties such as particularly their high melting point and their rigidity and strength at hightemperatures. in this research, different amount of sic were added to silica refractory containingdifferent binders such as borax, boric acid, calcium nitride, sodium tri poly phosphate, sodiumhexametaphosphate (shmp) and lime are added. physical properties (density and porosity),mechanical properties (cold crush strength, ccs) and microstructure were studied. this studyindicated that sic improves the physical and mechanical properties. in general, increasing sic withdifferent binders improve the mechanical and compaction in the samples. silica refractory samplecontaining 20%wt. sic and 5% wt. borax as a binder had the best results of mechanical strength andcompaction. in this sample, glassy phases formed fills the voids and increasing temperaturebetween particles. in fact, glass phase formation increase compaction, density, and strength.