Corundum Mullite Based Dense Castable For Blast Furnace Iron Runner
Introduction
The product has good slag resistance, good thermal shock stability,
long service life, convenient use and simple construction, which
significantly reduces the labor intensity of workers.
The blast furnace tapping groove is a passage through which
high-temperature molten iron or slag flows. The refractory lining
should have the following characteristics:
(1) strong resistance to erosion and scouring of molten iron and
slag;
(2) good thermal shock resistance and re-burning volume
(3) strong anti-oxidation ability;
(4) easy to construct, can be quickly baked without bursting, easy
to repair and dismantle;
(5) when used, no harmful gas, no sticky iron, long life. These
features make them complementary and should be compatible with each
other.
Production Spec 1
| Item | ASC-1 | ASC-2 | ASC-2A | ASC-3 | ASC-4 | SA170C | SA160C | AMSC-1 |
| Flexural strength (Mpa) | 110°x24h | ≥4 | ≥3 | ≥4 | ≥4 | ≥4 | ≥5 | ≥4 | ≥4 |
| 1000°x3h | ≥6 | ≥5 | ≥6 | ≥6 | ≥4 | ≥7 | ≥5 | ≥6 |
| 1450°x3h | ≥9 | ≥7 | ≥8 | ≥9 | ≥6 | ≥10 | ≥8 | ≥8 |
| Compressive strength (Mpa) °C | 110°x24h | ≥25 | ≥20 | ≥20 | ≥30 | ≥20 | ≥35 | ≥25 | ≥25 |
| 1000°x3h | ≥40 | ≥35 | ≥50 | ≥40 | ≥30 | ≥55 | ≥45 | ≥40 |
| 1450°x3h | ≥65 | ≥50 | ≥70 | ≥65 | ≥50 | ≥80 | ≥60 | ≥55 |
Production Spec 2
| Line rate of change(%) | 1000°Cx3h | | | | | | | | |
| 1450°x3h | _0.2~+0.5 | _0.2~+0.5 | _0~+0.5 | _0.3~+0.5 | 0.5 | 0~+1.0 | 0~+1.0 | 0~+1.0 |
| Bulk Density (g/cmm³) | 110°x24h | ≥2.85 | ≥2.80 | ≥2.80 | ≥2.80 | ≥2.55 | ≥2.80 | ≥2.60 | ≥2.85 |
| 1450°x3h | ≥2.80 | ≥2.75 | ≥2.70 | ≥2.75 | ≥2.50 | ≥2.70 | ≥2.50 | ≥2.85 |
| Chemical composition | AL2O3 | ≥75 | ≥55 | ≥50 | ≥70 | ≥55 | ≥67 | ≥70 | ≥78.6 |
| SIC | ≥10 | ≥30 | ≥35 | ≥8 | ≥55 | ≥367 | ≥70 | ≥78.6 |
| | C | 2-4 | 2-4 | 2-4 | 1-3 | 2-4 | _ | _ | 1-3,2-4 (MGO) |
Production Spec 3
| Mesh mm% | Top Size | 15 | 15 | 15 | 10 | 8 | 8 | 8 | 15 |
| Less than 75um | ≥27 | ≥28 | ≥29 | ≥28 | ≥30 | ≥28 | ≥29 | ≥27 |
| Application area | Main groove iron line Ditching ditch | Slag line on the main ditch | Main ditch line | Iron Ditch | Slag Dith |
