3–10 TPH Small Hard Rock Gold Gravity Processing Line: Complete Flow & Equipment Breakdown
For small-scale hard rock gold miners across Africa, South America and Southeast Asia, a compact, low-investment gravity circuit is often the most practical starting point. This 3–10tph gravity gold recovery plant uses PE200×300 jaw crushing, closed-circuit ball mill grinding, centrifugal concentrator and 6S shaking table, delivering stable fine gold recovery without cyanide leaching. It is ideal for small mine owners with limited budget, unstable power supply and simple site conditions.
Full Process Flow
- Raw Ore Bin & Feeding — Run-of-mine hard rock gold ore is stored in the raw ore bin, feeding steadily into the primary crusher.
- Primary Crushing: PE200×300 Jaw Crusher — The jaw crusher reduces big rock ore down to 15–40 mm, preparing feed size for wet grinding.
- Closed-Circuit Grinding: 0930 Ball Mill + FG075 Spiral Classifier — Crushed ore enters the ball mill for wet grinding. The spiral classifier separates coarse sand and fine slurry; coarse particles return back to the ball mill for re-grinding, forming a closed grinding loop to guarantee consistent fineness for gold liberation.
- Primary Gold Concentration: 40 Centrifugal Concentrator — The ground slurry is pumped to the centrifugal gold concentrator. High centrifugal force captures free fine gold particles, making this the core unit for fine gold recovery in this circuit.
- Cleaning & Upgrading: 6S-4500 Shaking Table — Concentrate from the centrifugal concentrator feeds onto the 6S shaking table for further upgrading. Heavy gold minerals separate from gangue by specific gravity difference. Final high-grade gold concentrate powder is collected, while tailings are discharged separately.
Core Equipment List & Functions
| Equipment Model | Core Function | Key Advantage |
|---|---|---|
| PE200×300 Jaw Crusher | Primary crushing hard rock gold ore | Robust, low consumption, works well with diesel power |
| 0930 Ball Mill + FG075 Spiral Classifier | Closed-circuit wet grinding, liberate gold from quartz rock | Stable grinding fineness, avoid over-grinding sliming gold loss |
| 40 Centrifugal Concentrator | Capture free fine gold and micro gold | Much higher fine gold recovery than shaking table alone |
| 6S-4500 Shaking Table | Concentrate cleaning, upgrade gold grade | High concentrate grade, easy operation, visual separation effect |
Why This 3–10TPH Gravity Layout Suits Small Mine Owners
- No Cyanide Required — Pure gravity separation, no chemical risk, easier local environmental approval in many African mining zones.
- Modular & Compact Footprint — Easy to set up on remote sites; can match diesel generator sets for off-grid mines.
- High Fine Gold Recovery Combo — Centrifugal concentrator + shaking table two-stage concentration fixes the common pain point: fine gold lost when only using shaking tables.
- Low Operating Cost & Simple Training — Few operators needed, wear parts are affordable and easy to source locally.
- Expandable Design — If later ore condition changes, you can add CIL / heap leaching module on the existing grinding circuit for higher total recovery.
FAQ
Q1: What kind of gold ore fits this gravity line?
A: Best for free-milling hard rock gold ore, quartz vein gold ore with native gold. It is less suitable for refractory sulfide gold ore where gold is locked inside pyrite.
Q2: What is the typical gold recovery rate of this gravity circuit?
A: For free gold, gravity recovery can reach 65–80%, depends on gold grain size and grinding fineness. Test work is strongly recommended before investment.
Q3: Can this plant run with diesel generator?
A: Yes. We can match the correct kVA diesel generator package for the whole line for sites without stable grid power.
Q4: Can we upgrade this line later?
A: Yes. The ball mill grinding section is reserved. Many clients add CIL tank leaching system later to recover the gold inside sulfide tailings.
Final Notes
This 3–10 tph hard rock gold gravity separation line is a turnkey beginner-friendly solution for small miners. Before manufacturing, ore sampling and mineral testing are always necessary to confirm gold liberation size and adjust grinding parameters, to avoid investment loss from wrong process selection.
Want a customized layout drawing, equipment quotation or matching generator solution for your mine? Send us your ore test report and site power condition.
