Chromite foundry sand is a natural sand that consists of minimum 46% chromium oxide from chrome ore. It has the following features:

Chromite ore is a mineral formed by the condensed crystallization of chromite slurry. It generally presents a massive or granular aggregate. Chromite with low Cr2O3 content (30-45%) is suitable in the metallurgical industry to produce ferrochrome alloy and metal chromium. 46% Cr2O3 and above chromite ore can work as molding sand material in the foundry industry. Crushed and sieved Chromite sand with the fineness of AFS30-35, AFS35-40, AFS40-45, AFS45-50, and AFS45-55 are specifications of molding sand. Chromium ore sand has excellent thermodynamic properties such as high refractory temperature, low specific heat, and high thermal conductivity.

Low turbidity chrome sand for foundry works well for thick-wall castings. The casting wrinkle and heavy leather defects of large thick-walled castings have always been a problem that plagued foundry enterprises. Even the use of chromite sand with superior performance is prone to defects that are difficult to clean. However, through a series of material and technical control methods, the quality of large thick-walled castings can be effectively improved.

Chromite sand (chromite ore sand) is often used as molding sand for large thick wall steel castings. It has the characteristics of high sintering temperature and strong resistance to liquid steel penetration. It is applicable to Iron chromium oxide sand, which can avoid most of the mechanical and chemical sand sticking. Thus it can make castings obtain smooth and clean surface quality. Chromite sand is very popular in heavy steel foundry fields.

Chromium-based minerals are commonly used products in the industry. From the source, there are natural chromite sand and synthetic chromite sand.

The chromite sand price was raised at the beginning of 2023. On February 9, 2022, South Africa declared a state of disaster nationwide due to worsening power shortages. At present, Eskom has to cut off a large number of customers’ electricity every day due to insufficient power supply.