Hook material

Large-scale blast furnace iron trough lining has been using a ramming material, shorter service life, maintenance of large, high refractory consumption. In order to meet the needs of large-scale blast furnace, the Company adopted castable tectonics blast furnace iron ditch lining, long service life, simple construction, low labor intensity, reduced refractory consumption, at the same time help to improve the furnace working environment conducive to environmental protection treatment. Spinel Al2O3-SiC-C iron trough hopper Porperties performance indicators Specification Al2O3,% ≥65 Mgo,% ≥6 SiO2, + C,% ≥10 bulk density BD, g / cm3 110 ℃ × 24h ≥2.9 1550 ℃ × 3h ≥2.8 permanent change rate PLC,% 110 ℃ × 24h 0 ~ 0.2 1550 ℃ × 3h + 0.8 ~ + 1.7 flexural strength MOR, Mpa 110 ℃ × 24h ≥9.0 1550 ℃ × 3h ≥8.0 compressive strength CCS , Mpa 110 ℃ × 24h ≥60 1550 ℃ × 3h ≥80 iron trough castable (Al2O3-SiC) iron trough castable (Al2O3-SiC) performance Al2O3,% ≥80 SiC,% 9 Fe2O3,% 0.1 bulk density, g / cm3 ≥3.0 (110 ℃ × 24h) drying compressive strength, Mpa ≥65 (1100 ℃ × 24h) after burning compressive strength, Mpa 90-100 (1150 ℃ × 3h) line rate of change,% ± 0.15 Performance Indicator Al2O3,% ≥70 SiC,% 11 Fe2O3,% 0.15 bulk density, g / cm3 ≥2.6 (110 ℃ × 24h) drying compressive strength, Mpa ≥60 (1100 ℃ × 24h) Compressive strength after burning, Mpa ≥90 (1150 ℃ × 3h) line rate of change,% ± 0.15 over three trenches material mainly used for iron casting special materials.