What is chrome ore powder?
Chrome ore powder is one of the indispensable raw materials in industrial fields such as refractory materials, casting, glass manufacturing, and ceramic glazes. Chromium ore powder comes from natural chromite ore. Chromium ore with a chromium content of less than 40% can only be used in the metallurgical field for the smelting of ferrochrome metal. Only chromium ore with a chromium content of more than 40% is meaningful for deep processing. Raw materials with a chromium content of 40-42% in South Africa, 46-47% in Zimbabwe, and 48-50% in Zimbabwe are selected. The production process including ore selection, washing, drying, screening, and fine milling.
In a broad sense, chromite powder refers to sandy chromite or powdered chromite below 1mm. In a narrow sense, the fineness of chromite powder in fields such as casting is usually below 0.1mm. The main types include:
1. Chrome ore powder with a content of 40-41%, particle size: 100 mesh, 200 mesh, 325 mesh, 400 mesh. Its use is in the field of glass coloring.
2. Chrome ore powder with a content of more than 46%, particle size: 200 mesh, 325 mesh, 400 mesh. Finer particle sizes such as 600 mesh, 800 mesh, 1000 mesh, 1200 mesh, 1500 mesh, 1600 mesh, 2000 mesh, 2500 mesh are available.
Its uses are divided into five categories:
Casting coatings. It is used for the surface of sand casting. The function is to prevent sand from sticking to the casting and provide surface quality of the casting.
Refractory castables, mixed with magnesia sand and other materials to make magnesia-chrome refractory bricks. The fire brick works in key parts such as ladle slag lines.
Green and amber colorants and pigments for glass containers, glass bottles, and ceramic glazes, which have the characteristics of high temperature resistance and low cost.
Mineral pigments. The proper size are 1000-2500 mesh. The fine chronium ore powder works as raw materials for green, brown and even red pigments.
Anti-slip and wear-resistance addtives.
