Chromite Sand is a naturally occuring mineral consisting primarily of the oxides of chrome and iron. Its properties enable the material to be used in high duty grey iron and steel foundries as a core and mould making sand. Its high thermal conductivity gives it good chilling properties whilst its low thermal expansion gives rise to good dimensional stability. Its basicity being close to neutral allows the use of a wide range of resin bonding systems and inorganic binders.
Olivine is a naturally occurring mineral sourced from Norway. Olivine Sand is suitable for use in alkaline resin bonded systems and produces a clean surface finish, making it suitable for foundry castings, especially for manganese steel and
non-ferrous metals casting.
Zircon sand & flours
Zirconium silicate or Zircon is a naturally occuring sand. Zircon's low thermal expansion rate, its high thermal conductivity and its non-wetability by molten metal make it an ideal mould and chill sand. Zircon Flour is also used in core and mould coatings to improve surface finish.
The good thermal stability, high insulation and low thermal expansion mean this product is ideal for foundry applications including cast moulds.
Additionally, LKAB Minerals can offer testing of foundry materials including:
- Turbidity of water/fines in Chrome Sand
- Viscosity of bentonite/polymer blends
- Wet tensile strength of foundry sand
- Fluid loss measurements
- Green, sheer & dry strength of foundry sand
- Air Permeability of foundry sand
- methylene blue test
- Acid Demand Value
Contact us to find out more.