ISSN:
1573-9139
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Conclusions Impregnation of blast-furnace aluminosilicate refractories with carbon-containing substance makes their structure more compact and greatly enhances the quality. The open porosity of the impregnated specimens decreases by 42–47 rel.%, the gas permeability is reduced, the compressive stress (in the cold) is increased by a factor of 1.5–2, the onset temperature of deformation under a load of 2 kgf/cm2 is raised by 50–100°C, the slag resistance is increased by a factor of 2–4 (depending on the amount of coke residue), the alkali resistance is enhanced owing to the presence of coke residue, which, by blocking off the chamotte grains from the active reagents (K2O, Na2O), promotes formation of more refractory mineral compositions in the form of large crystals of mullite andβ-alumina, cemented by refractory glass of presumably nepheline composition. This enhancement of the refractory properties as a result of impregnation with carbon-containing substance will increase the resistance of the lining of the lower stack and the bosh of blast furnaces.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01293037
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