Feeding Material: Alluvial gold & tantalum ore contain a lot of slime
Max Feed Size: 120 mm
Capacity: 100 tph
Process Description
JXSC has provided a complete 100 TPH Alluvial Gold & Tantalum Plant in Brazil. It is very suitable for processing heavy minerals, like tin, tungsten, niobium, etc. This plant is a very popular design in many countries; many mine owners prefer to apply it.
Our service for this project includes:
- Design the whole plant flowchart and machine layout according to the mineral project conditions.
- Provide a complete set of washing and crushing machines
- Shipping all machines to the destination port in Brazil
- Provide technical support& installation instructions.
Client Background and Requirements
Our Brazilian client operates an alluvial mining project targeting gold and tantalum recovery. They require a complete 100TPH processing plant capable of handling heavy minerals including tin, tungsten, and niobium. Key requirements include:
- High-efficiency gravity recovery for gold and tantalum (target: 85–90%)
- Flexibility to process mixed ore types (alluvial & hard rock)
- Compact layout with modular design for easy maintenance
- Compliance with local environmental regulations (water recycling, minimal chemical use)
Our Process Design & Solution
The process is as follows
We delivered a solution combining washing, crushing, and multi-stage concentration:
1. Pre-screening & Washing
- Vibrating Grizzly Feeder (DN3890): Removes oversize debris (> 50 mm)
- Trommel Scrubber (JXSC-1500): Aggressive clay breakdown + size classification
2. Crushing Circuit
- Jaw Crusher (PE400×600): Primary reduction to 60mm
- Hammer Crushers (PC800×600 ×2): Closed-circuit crushing to 0- 2 mm (with mesh control)
3. Concentration Stages
- Centrifugal Concentrator (STLB100): Pre-concentrates gold/tantalum from slurry
- Shaking Tables (500×1800mm ×8): Upgrades concentrate purity via laminar flow separation
- 3PC Disc Magnetic Separator: Dry separation of paramagnetic minerals (e.g., tantalite vs. wolframite)
4. Auxiliary Systems
- Electromagnetic Feeder (GZ4): Controlled feed to crushers
- Spiral Dewaterer: Tailings water recovery (>80% reuse)
The Main Machines & Accessories include the following:
| Product Name | Model No. | Quantity (Set) |
| Vibrating grizzly feeder | DN3890 | 1 |
| Trommel Srubber | JXSC-1500 | 1 |
| Centrifugal Concentrator | STLB100 | 1 |
| Electromagnetic vibrating feeder | GZ4 | 1 |
| Jaw crusher | PE 400*600 | 1 |
| Hammer Crusher | PC800*600 | 2 |
| Shaking Table | 500*1800mm | 8 |
| 3PC Disc Magnetic Separator | 1 |
Customer Questions & Our Answers
1. What’s the difference between the trommel scrubber and trommel screen?
The trommel scrubber is used for washing raw materials with a lot of sticky clay; the trommel screen is used for washing the raw materials with normal sand and soil.
2. How does the jig separator concentrate the alluvial tantalum & gold?
A jigging machine is a device for mineral separation based on the principle of gravity stratification. Its core mechanism utilizes a sawtooth-shaped, asymmetrical pulsating water flow to stratify mineral particles of different densities and sizes within the jigging chamber, thereby achieving the separation of light and heavy minerals.
3. Why do you use a hammer crusher instead of a ball mill?
Because the ball mill is more suitable for fine gold recovery, if crushing to 2 mm can release the gold and tantalum inside the rock efficiently, use the hammer crusher more suitable. Their has screen mesh under the hammers to make sure the output size is 0-2 mm
4. What’s the function of the centrifugal concentrator?
The centrifugal concentrator is for pre-concentrating the gold and tantalum from the 0-2 mm slurry of the hammer crusher.
5. What’s the function of the shaking table?
The shaking table is for re-concentrating the gold and tantalum concentrate from the centrifugal concentrator to reach a higher purity
6. What recovery rate can be achieved?
The gravity recovery rate can reach 85–90%; the final result will depend on the ore condition.
7. Will the 3pcs disc dry magnetic separator be able to separate different minerals?
The three-stage strong magnetic separator is suitable for the separation of various mixed magnetic minerals. Based on the differences in the magnetic properties of the minerals, the magnetic field strength can be adjusted by controlling the excitation current of each disk to achieve efficient separation. The induction distance between each disk and the mineral particles can also be adjusted to obtain different magnetic field strengths, allowing for the simultaneous separation of multiple minerals. This equipment is widely used in the dry separation of ilmenite, monazite, tungsten-tin ore, tantalite, and other minerals containing both magnetic and non-magnetic components.
