The chromium materials used to make magnesia-chromite bricks are natural chromite grain and chromite powder with a chromium content of more than 46%. Chromite ore powder has the following performance advantages:
Chromite filler mess, also known as ladle well filler or nozzle filler sand. It is an important part of furnace refractory material. The raw material of Chromite filler mess is chromite sand and other additives.
The particle size of foundry sand has a significant impact on the casting process. Foundry chromite sand not only requires uniform particle size, but also has requirements for fine powder content. Controlling content of fine powder is very important below 140mesh and 200mesh.
Chromite powder 325F pigment is an effective colorant for making green color glass containers and plates. The coloring mechanism of chromite powder (325F, 200F, 400F, etc.) of glass coloring pigment is mainly based on the optical properties of chromium ions (Cr³⁺).
Chromite ore is a naturally occurring mineral in the form of iron-chromium oxide FeCr2O4. South African chromite has all the above elements Mg-Al and Fe chromite MgFe (Al-Cr) 2O3. There are several types of Chromite sand such as metallurgical grade chromite, casting grade chromite, and chemical grade chromite after chrome ore get mined. One-third of the world’s chromite reserves are in South Africa. The LG layer of South African chromite has a high grade with a chromium content of 45-46%. This type of chromite sand is suitable for casting and refractory materials.
As refractory material in foundry feiled, chromite sand has multiple advantages such as high specific gravity, strong heat conductivity, fast cooling, high refractory temperature, small thermal expansion coefficient, and good slag resistance. Chromite sand AFS45-50 can work as casting sand in different casting processes.
