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The slag and iron ditch working layer castables provided by Baoyi Refractories for various blast furnace ironworks include: main ditch iron line castables, main ditch slag line castables, iron ditch castables, slag ditch castables and swing castables. These special castables are characterized by good construction performance, high density and strength, good resistance to slag erosion and scouring, high temperature resistance, oxidation resistance, long service life and low consumption of tons of iron.
Technical Parameters
Testing Program | Physical and chemical indicators | Inspection Standards | |||||
chemical composition (%) | Al₂O₃ | ≥68 | ≥50 | ≥50 | ≥55 | ≥68 | GB/T 16555 |
SiC | ≥8 | ≥30 | ≥7 | ≥15 | ≥8 | ||
bulk density (g/cm³) | 110℃×24h | ≥2.80 | ≥2.70 | ≥2.40 | ≥2.70 | ≥2.80 | YB/T 5200 |
1450℃×3h | ≥2.70 | ≥2.60 | ≥2.30 | ≥2.60 | ≥2.70 | ||
linear rate of change (%) | 1450℃×3h | 土0.5 | ±0.5 | ±0.5 | ±0.5 | ±0.5 | YB/T 5203 |
flexural strength (Mpa) | 110℃×24h | ≥2.5 | ≥2.5 | ≥3.0 | ≥3.0 | ≥2.5 | YB/T 5201 |
1450℃×3h | ≥3.5 | ≥3.5 | ≥5.0 | ≥5.0 | ≥3.5 | ||
