How to Build a 250TPH Alluvial Gold Washing Plant in Ethiopia?
Are you a gold mine owner or investor looking for a real working alluvial gold washing plant? In this article, we share a real EPC project we did in Ethiopia. The plant runs at 250TPH (tons per hour), with a gold recovery rate of over 98%. We will show you the ore details, the flow design, the main equipment, and how to plan your own project.
Project Background: Alluvial Gold Ore in Ethiopia
Our client is a local mining company in Ethiopia. The raw material is alluvial gold ore (river sand and clay type). After testing, the gold content is 3–5 ppm (grams per ton). The customer wanted a simple, low-cost, and high-recovery gold washing line.
The client asked us to design a plant using these key machines:
- Washing screen (to remove clay and oversize stones)
- Centrifugal concentrator (for fine gold capture)
- Shaking table (for final clean concentrate)
This is a classic alluvial gold processing plant setup. After our engineer checked the ore report, we made a full custom flow design.
Why Gravity Separation Works Best for Alluvial Gold
Alluvial gold is mostly free gold. It is not locked inside rock. So you do not need crushing, grinding, or chemicals like cyanide. You only need to wash, screen, and separate by gravity. This makes alluvial gold the cheapest gold type to process.
The Full Flow Design – 250TPH Plant
Here is the processing flow our team built for this Ethiopia project:
- Raw Material Feeding – Hopper + vibrating feeder
- Rotary Scrubber – Washes the clay off the ore and screens out big stones
- Vibrating Sluice – Catches the gold grains right after washing
- Centrifugal Concentrator – Captures the very fine gold
- Shaking Table – Cleans the concentrate to a high grade
- Melting Furnace – Turns the gold concentrate into gold bars
The whole line is standard gravity processing. Easy to run. Low power use. Less skilled workers needed.
Recovery Rate and Project Results
The final test result on-site showed:
- Gold recovery rate: over 98%
- Daily working hours: 20 hours
- Plant capacity: 250 tons per hour of raw ore
- Water use: low (rotary scrubber recycles water)
- Power use: low (no fine grinding needed)
The client is very happy with the result. The plant pays back fast and runs steady every day.
Who Should Buy This Type of Plant?
This kind of alluvial gold mining equipment is best for:
- Gold mine owners with river or soil-type gold deposits
- Mining investors who want a fast ROI project
- EPC project buyers who want a turn-key solution
- Small and medium mines looking for low-cost recovery
FAQ – Alluvial Gold Washing Plant
Q1: What is an alluvial gold washing plant?
It is a set of machines that wash river or soil-type ore to take out free gold. It uses gravity separation, not chemicals.
Q2: What is the recovery rate of a gravity alluvial gold plant?
A well-designed plant from Dasen Mining can reach 95%–98% recovery. Our Ethiopia project hit over 98%.
Q3: How long does it take to build a 250TPH alluvial gold washing plant?
Equipment production takes around 30–45 days. Shipping depends on your country. On-site building takes 20–40 days.
Q4: Can I buy just one machine, not the full plant?
Yes. You can buy a single rotary scrubber, shaking table, or centrifugal concentrator. But for best recovery, we suggest the full flow.
Q5: Do you offer EPC service for gold mining projects in Africa?
Yes. We do full EPC and turn-key projects in Ethiopia, Ghana, Tanzania, Sudan, Mali, Zimbabwe, and other African countries.
Q6: Do you provide on-site installation?
Yes. Our engineers travel to your mine site to set up the plant and train your workers.
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