Magnesia-calcium brick
Product parameter
Production process：The product is made of high quality synthetic magnesia calcium sand as the main raw material, which is fired at high temperature and immersed in paraffin under vacuum pressure.
Main application：AOD, VOD stainless steel refining furnace, high temperature performance and excellent slag resistance, can purify molten steel, is a better choice for smelting ultra-clean steel lining.
| Index/brand | MG-15A | MG-15B | MG-20A | MG-20B | MG-25A | MG-25B | MG-30A | MG-30B | MG-40A | MG-40B |
|---|---|---|---|---|---|---|---|---|---|---|
| MgO(%)≥ | 75 | 75 | 70 | 70 | 65 | 65 | 60 | 60 | 50 | 50 |
| CaO(%) | 13-17 | 13-17 | 18-22 | 18-22 | 23-27 | 23-27 | 28-32 | 28-32 | 38-42 | 38-42 |
| ∑(A+F+S)(%)≤ | 3 | 4 | 3 | 4 | 3 | 4 | 3 | 4 | 3 | 4 |
| Apparent Porositt(%)≤ | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
| Cold crushing strength (Mpa)≥ | 55 | 50 | 55 | 50 | 55 | 50 | 55 | 50 | 55 | 50 |
| 0.2Mpa load softening starting temperature(℃)≥ | 1700 | 1680 | 1700 | 1680 | 1700 | 1680 | 1700 | 1680 | 1700 | 1680 |
