Chromite powder is an important ore powder, which is made from chromium ore through grinding, screening and other processes. Chromium ore powder has a variety of uses, mainly in metallurgy, chemical industry, building materials, glass, ceramics, magnetic materials, environmental protection and other fields.
| PHYSICAL PROPERTIES(TYPICAL) | AVERAGE CHEMICAL COMPOSITION(TYPICAL) | ||
| PH | 7-9 | Cr2O3 | ≥46.0% |
| Color | Black | SiO2 | ≤1.0% |
| Acid Amount | ≤2m | Fe2O3 | ≤26.5% |
| Soil% | ≤0.1 | CaO | ≤0.30% |
| Bulk Density | 2.5-3.0g/cm3 | MgO | ≤10.0% |
| Specific Gravity | 4.0-4.8g/cm3 | Al2O3 | ≤15.5% |
| Moisture | ≤0.1% | P | ≤0.003% |
| Sintered temperature | ≥1800℃ | S | ≤0.003% |
| Free Acid | 0 | Cr/Fe | 1.55:1 |
| Filling density | 2.6g/cm3 | ||
| Melting temperature | ≥2180℃ | ||
SIZE DISTRIBUTION:
| Size | Sieve | Passing%（GURANTEE ） | Passing%（test result） |
| 325# | 325# | ≥95% | ≥98.5% |
Chromite powder, also known as chromite ore powder, is an inorganic compound used as a pigment and an important component in some high-performance refractory materials. Its chemical composition is Cr2O3. Chromite is the only naturally occurring chromium ore, which exists with iron oxide and has a melting point of 2040°C.
–Chromite powderhas fairly good long-term stability, which makes it very suitable for use as a pigment in paints, inks and especially glass. Chromium powder has long been the preferred pigment for the production of green glass, it is used to color container glass.
— Chromite powder can provide the same benefits to the ceramic industry and produce a gray body. It can also be used to make glazes for ceramics, which are often green, and the principle is similar to when chromite ore powder is used as a glass pigment. In terms of crystallization ability, chromite can be used as a source of iron oxide, and although chromite has an extremely high melting point, the activation energy for crystallization decreases with increasing chromite content. Therefore, using chromite as a glaze has the potential to improve the quality of low-end ceramics.
