กลุ่มหรงเฉิง
Magnesium calcium iron dry ramming material is a dry material made of magnesium calcium iron sand and magnesia sand with reasonable grade, which is mainly used for building steel making and ferroalloy electric furnaces.
Technical parameter of magnesium calcium Iron dry ramming mass
| รายการ | ดัชนี | ||||
| MGT-1 | MGT-2 | MGT-3 | MGT-4 | ||
| MgO % | ≥78 | ≥81 | ≥82 | ≥85 | |
| CaO % | 12~15 | 6~9 | 8~11 | 6~8 | |
| Fe2O3 % | 4~5 | 5~9 | 3~5 | 4~5 | |
| SiO2 % | ≤1.3 | ≤1.5 | ≤1.1 | ≤1.3 | |
| อัล2O3 % | ≤0.6 | ≤0.6 | ≤0.6 | ≤0.6 | |
| Grain size composition mm | 0~6 | 0~6 | 0~6 | 0~6 | |
| Bonding Method | Ceramic Bonded | Ceramic Bonded | Ceramic Bonded | Ceramic Bonded | |
| Fired Cold Crush Strength MPa | 1300℃×3h | ≥10 | ≥10 | ≥8 | ≥10 |
| 1600℃×3h | ≥30 | ≥30 | ≥30 | ≥30 | |
| Permanent Linear Change% | 1300℃×3h | -0.2~-0.5 | -0.2~-0.5 | -0.2~-0.5 | -0.2~-0.5 |
| 1600℃×3h | -1.5~-2.5 | -2.0~-3.0 | -0.1~-0.2 | -1.5~-2.5 | |
| Particle bulk density,g/cm3 | ≥3.25 | ≥3.25 | ≥3.25 | ≥3.25 | |
| Usage | Electric steelmaking furnace | Electric steelmaking furnace | Electric steelmaking furnace | Ferroalloy electric furnace | |
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