The IU of chromite sand for casting reflects the degree of uniformity of the particle sizes. IU means Index of Uniformity. A high IU value indicates that the particle sizes of the chromite sand are relatively uniform, while a low IU value means that there is a wide range of particle sizes in the sand.
In the production of heavy-duty mining equipment castings parts, the choice of foundry sand plays a critical role in casting quality. Chromite sand AFS45-55, due to its unique properties, is an ideal choice for these applications.
Both natural chrome ore sand and olivine sand can be used in the foundry field, but there are great differences between the two. There are several differences between foundry chromite sand and olivine sand.
Manganese casting steel is a superior casting for heavy mechainary parts,mining equipment, such as crusher jaws, hammerheads in impact crushers, and liners for ball mills. The manganese castings are always heavy and with large size. It’s important to adopt proper foundry sand for the casting process. Foundry chromite sand is particularly proper casting sand for it. There are several advantages:
Chromite sand is a natural sand with high density. The specific gravity of 46% Cr2O3 chromite sand is 4.6-4.8 g/cm3. And the bulk density is 2.6-2.8 g/cm3. That is much heavier than other sand materials. Thus, Chromite sand can works as heavy sand in many applications.
The specific gravity of natural chromite ore is generally between 4.0 and 4.8 g/cm³. The specific gravity of foundry chromite sand is higher, and the value of 46% chromite sand is higher than 4.5 g/cm³.
