REFKO Feuerfest GmbH
| GROUPS OF RAW MATERIALS | |
| As basic for our refractory mixes we use the following materials: | |
| alumina: | corundum, tabular alumina |
| raw materials containing alumina: | bauxite, andalusite, fire clay ( chamotte ) |
| raw materials based on SiO2 : | quartzite, fused silica |
| basic raw materials: | sintered magnesia, olivine |
| specialties: | SiC, zirconia, zircon, spinel, ZAC |