| 1 | Light-burned magnesia is prepared by calcining magnesite. | |
| 2 | Usually use magnesite, dolomite and brine as raw material to produce. | |
| 3 | A new technique for preparation of high - purity magnesia from low-grade magnesite was studied. | |
| 4 | One of Portland spar, barite, magnesite , dolomite and other resources to reserves is the highest in Hebei. | |
| 5 | Caustic calcined magnesia is produced by calcining magnesite in furnaces, typically at temperatures of 800~900℃. |