Chromite sand production process？

Step 1: Beneficiation

• Primary Method: Spiral Separation​ – The ground ore is mixed with water to form a slurry. This slurry is fed into spiral concentrators. 

Step 2: Drying and Roasting/Calcining

Step 3: Cooling, Screening, and Packaging

1. Cooling
2. Screening (Grading):
3. Packaging:​ 

Key Characteristics of the Final Chromite Sand

• High Melting Point:​ ~1,850°C, making it ideal for casting steel and high-alloy metals.
• High Thermal Conductivity:​ Promotes faster cooling of castings.
• Excellent Thermal Stability:​ Resists thermal shock and penetration by molten metal.
• Good Resistance to Basic Slags:​ Chemically inert in contact with molten steel.
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Main Applications

• Foundry Industry:​ Used as a molding sand for large steel castings and high-alloy castings to prevent burn-on and penetration defects.
• Refractory Industry:​ A key raw material for manufacturing magnesia-chrome bricks used in steelmaking furnaces and cement kilns.