Lost foam coating raw material 325# 325mesh chromite powder
325#mesh chromite powder can be used in lost foam coatings. Chromite flour is often used in casting coatings.
The reasons are as follows:
Precise fineness: chromite powder has a pass rate of more than 90-100%, uniform particles, and can be better dispersed in the coating to improve the uniformity and stability of the coating.
Low moisture content: Dry without caking, ensuring that the coating will not be affected by humidity problems during use.
High refractory temperature: The melting point of chromite sand is 2180 degrees, and the sintering temperature is greater than 1850 degrees. It can remain stable at high temperatures to prevent the coating from failing at high temperatures.
Excellent thermal conductivity: chromite powder has stronger thermal conductivity, can accelerate cooling and heat conduction, and improve casting efficiency.
Good chemical stability: It has good resistance to alkaline slag when in contact with molten metal, does not react chemically with iron oxide, etc., can prevent the penetration of molten metal, and avoids the occurrence of sticky sand defects. Therefore, Chromite flour is an ideal choice in lost foam coatings, which can improve the performance of the coating and the casting effect.
Chromite powder is an iron chromium oxide found naturally in the earth crust. It is the most industrially important mineral for the production of metallic chromium by far, used in the production of stainless and tool steel. It is also used as a refractory material because of its high heat stability. Chromite flour extracted from chromite sand is used in Chrome plating & alloying for production of corrosion resistant super alloys. Chromite flour is also used as a pigment for glass, glazes & paints and as an oxidizing agent for tanning leather.
Application: Used in high duty grey iron and steel foundries as core and mould making sand, in steel production it is used as a fller, used for production of green glass beverage containers.
Avalible size for our chromite powder:
200MESH, 325MESH, 400MESH, 500MESH, 600MESH, 800MESH, 1000MESH, 1200MESH, 1500MESH, 2000MESH, 2500MESH
Chemcial index:
| Cr2O3 | SiO2 | FeO | CaO | MgO | Al2O3 | P | S | Cr/Fe |
| ≥46.0% | ≤1.0% | ≤26.5% | ≤0.30% | ≤10.0% | ≤15.5% | ≤0.003% | ≤0.003% | 1.55:1 |
Physical index:
| Bulk density | Volume density | colour | PH | sintering temperature | melting point |
| 2.5-3g/cm³ | 4.0～4.8g/cm3 | black | 7-9 | > 1800°C | 2180°C |
Packing: 1000Kgs /big bag
Supply Ability: 8000Ts/month
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