chromium ore, also known as chromite, is also used in the refractory and metallurgical industries. Its resistance to fire of up to 1900 °C, good gas permeability and low thermal expansion combined with good thermal conductivity make this raw material an effective barrier to molten metal compared to other moulding sands.
Furthermore, in contrast to the alternative quartz sand, there is no risk of developing silicosis when using the raw material chrome ore sand. Chrome ore sand is obtained from chromite (chrome iron ore), which is processed into chromite sand with the aid of liquid binders after extraction from natural deposits.
MAIN APPLICATIONS OF FOUNDRY CHROMITE SAND
Chromite Sand in the foundry industry
Its properties enable the material to be used in high duty grey iron and steel foundries as core and mould
making sand. Its high thermal conductivity gives it good chilling properties, 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, it has a high refractoriness and a broad sieve distribution.
Chromite Sand in the steel industry
In steel production, Chromite Sand is used as well filler for protection of the sliding gate in large steel holding ladles.
Chromite Sand in the glass industry
When ground to a fine flour, Chromite Sand is used for the production of green glass beverage containers.
How to Choose grit size?
Generally,the smaller casting need to make, the finer grit size foundry adopted.The following frame shows it for reference:
Less than 500KGS | 500-1000KGS | 1-10 Tons | 10-30 Tons | 30-100 Tons |
AFS40-70 | AFS 45-50 | AFS 45-50 | AFS40-45 | AFS 35-40 |
Package of OF FOUNDRY CHROMITE SAND
