Sands Minerals

Raw magnesite lumps are natural mineral deposits of magnesium carbonate (MgCO₃), often found in regions with significant geological activity. These lumps are usually extracted through mining processes, and magnesite itself is a valuable source of magnesium used in various industrial applications.

• Composition: Magnesium carbonate (MgCO₃), often with impurities like silica, iron, and other minerals.
• Appearance: Raw magnesite lumps are typically white, gray, or beige in color, but they can also have some variations depending on the impurities present.
• Texture: These lumps are usually crystalline and can vary in size from small fragments to larger chunks.
• Density: They are relatively dense, with a hardness of around 3.5–4.5 on the Mohs scale.

1. Refractory Materials: Magnesite is used to produce magnesia-based refractories, which are used in furnaces, kilns, and other high-temperature environments.
2. Magnesium Metal Production: Raw magnesite is processed to extract magnesium metal, which is used in alloys for the automotive and aerospace industries.
3. Agriculture: It can be used to correct soil acidity and provide magnesium to plants.
4. Chemical Industry: Magnesite is used in the production of magnesium hydroxide and other magnesium compounds, which have various industrial applications.

Dead Burnt Magnesite (DBM) is a high-purity, heat-treated form of magnesite (MgCO₃). It is produced by heating natural magnesite ore in a rotary kiln at temperatures above 1,500°C (2,732°F) to remove carbon dioxide. The resulting product is mainly composed of magnesium oxide (MgO), which is known for its exceptional refractoriness, chemical stability, and resistance to high temperatures.

1. High Refractoriness: DBM has a very high melting point and is highly resistant to thermal shock, making it ideal for high-temperature applications.
2. Magnesium Oxide Content: It contains over 90% MgO, which gives it its superior heat-resistance properties.
3. Low Reactivity: The process of "dead burning" reduces its reactivity, meaning it is more stable and less prone to reacting with other materials at high temperatures.
4. Density and Durability: DBM is dense and has a strong structure, contributing to its longevity in harsh environments.

• Refractory Materials: DBM is primarily used in the production of refractory bricks and linings for steel furnaces, kilns, and other high-temperature equipment.