Tin Ore Production Line and Process Solution

Tin Ore Production Line Solution focuses on the efficient recovery of Cassiterite (SnO2) using Gravity Separation.

This solution adopts a technical route of "Gravity Beneficiation as the main method, supplemented by Flotation". It is designed to handle both Alluvial (Placer) and Vein Tin ores, maximizing recovery rates and economic benefits.

Step 1: Ore Preparation (Crushing & Grinding)

Goal: Dissociate cassiterite monomers while avoiding over-grinding (which causes tin loss).

• Crushing: Jaw Crusher (Coarse) + Cone Crusher (Fine) reduce ore to 10-25mm.
• Grinding: Ball Mill + Spiral Classifier operate in a closed circuit.
• Target Fineness: 60-85% passing 200 mesh. Rod mills are often used to reduce over-grinding.

Step 2: Gravity Separation (Core Process)

Goal: Separate tin concentrate based on density difference.

• Coarse Particle (+0.5mm): Using Jig Machine for early recovery.
• Fine Particle (0.1-0.5mm): Using Shaking Table for high-precision separation.
• Pre-concentration: Using Spiral Chute for large capacity roughing.

Step 3: Purification (Flotation & Magnetic)

Goal: Remove impurities like sulfides and iron to upgrade the concentrate.

Step 4: Product Processing

• Dewatering: High-efficiency Thickener + Ceramic Filter.
• Tailings: Dry stacking or water recycling system.

Q1: What is the difference between Alluvial and Rock Tin processing?

A: Alluvial Tin (Placer) is already loose, so it requires washing and screening (Trommel) followed by gravity separation. Rock Tin (Vein) requires Crushing and Grinding to liberate the minerals before separation.

Q2: Why use Gravity Separation instead of Flotation?

A: Cassiterite has a high density (SG ~7.0), making gravity separation very efficient and much cheaper than flotation. Flotation is only used for very fine tin slime (-19 microns) that cannot be recovered by gravity.

Q3: How to prevent Tin loss in slime?

A: We use a Rod Mill instead of a Ball Mill for primary grinding to reduce over-grinding. We also use Spiral Chutes for desliming and Centrifugal Concentrators for fine particle recovery.

Get Your Custom Tin Processing Plant

We customize the solution based on your ore type (Alluvial or Rock) and capacity.
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