Chromite Sand Processing Line and Process Flow

Chromite Sand Processing Line Solution is designed for the efficient recovery of Ferrochrome ore from alluvial deposits.

This solution utilizes a "Washing - Gravity Separation - Magnetic Separation" process. It effectively enriches Chromite sand in the 0.1-5mm particle size range, offering high capacity, low operating costs, and high recovery rates for strategic chrome resources.

Step 1: Pre-treatment (Washing & Screening)

Goal: Remove large waste rocks and wash away sticky clay.

• Feeding: Uniform feeding via Bin and Feeder.
• Washing: A Trommel Screen or Rotary Scrubber washes the ore and screens out coarse waste (>2-5mm), ensuring only sand-sized particles enter the gravity circuit.

Step 2: Gravity Separation (Roughing & Sweeping)

Goal: Bulk enrichment of heavy minerals.

• Spiral Chute: The Spiral Chute Group is the core equipment. It uses gravity and centrifugal force to separate heavy chromite from light silica sand.
• Configuration: Typically involves a Two-Stage Process (Roughing + Sweeping) to maximize recovery and ensure minimal loss in tailings.

Step 3: Concentration (Optional)

Goal: Further improve concentrate grade.

• For high-grade requirements, the spiral concentrate is sent to a Shaking Table. The shaking table provides precise separation based on density, producing a high-grade final concentrate.

Step 4: Magnetic Separation

Goal: Remove magnetic impurities or separate Chromite from other heavies.

• Equipment: Magnetic Separator (Dry or Wet).
• Function: Used to remove strong magnetic minerals (Magnetite) or to separate weak magnetic Chromite from non-magnetic minerals (Zircon, Rutile).

Q1: Can you process low-grade chromite sand?

A: Yes. Because Spiral Chutes operate at very low cost, they can economically process low-grade alluvial ores by discarding huge amounts of waste sand in the roughing stage.

Q2: What is the water requirement?

A: Wet gravity separation requires significant water (pulp density 25-35%). However, we design water recycling systems with settling ponds to reuse >90% of the process water.

Q3: How do you handle clay?

A: Clay can negatively affect spiral performance. We use a Rotary Scrubber or High-Pressure Water Washing in the Trommel to disintegrate clay before separation.

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