2000 TPD Gold Carbon-in-Leach (CIL) – Mining Silo & Material Handling Solution
This project is a 2000 tons per day (TPD) gold Carbon-in-Leach (CIL) processing plant located in the Democratic Republic of Congo (DRC). The client is a mid-sized mining company focused on improving gold recovery efficiency and stabilizing production capacity in a remote mining region.
Due to unstable material flow and inconsistent reagent dosing in the previous system, the client required a complete bulk material storage and handling solution, including mining silos and auxiliary systems.
Project Challenges
Before system upgrade, the plant faced several critical issues:
1. Unstable Lime Feeding System
Manual feeding caused inconsistent pH control
Fluctuating cyanide leaching efficiency
Increased chemical consumption
2. Poor Powder Flowability
Lime powder and reagents easily formed bridging
Frequent blockage in storage bins
High maintenance downtime
3. Lack of Integrated Storage System
Separate small bins instead of centralized silo system
No automated dosing control
Low process stability
Our Solution
We provided a complete mining silo system solution designed specifically for the gold CIL process.
1. Lime Silo System (Core Equipment)
A key component of the project is the lime storage and dosing system, designed for continuous pH control in the leaching process.
Specification:
Capacity: 150–300 tons per silo
Material: CaO / Ca(OH)₂ lime powder
Structure: Bolted steel silo with reinforced support legs
Key Features:
Cyanide Detoxification process stability support
Anti-bridging aeration system
Fully automated discharge control
Dust-proof sealed structure
Ensures stable pH level (10–11) in leaching tanks, improving gold recovery rate.
2. Fine Ore Silo System
Installed between crushing and grinding sections.
Functions:
Buffer storage for crushed ore
Stabilizes feed rate to ball mill
Reduces fluctuations in grinding performance
3. Reagent Storage Silos
Used for storing auxiliary chemical powders such as:
Lime
Flocculants
Other mineral processing reagents
Features:
Precise dosing integration
Corrosion-resistant design
Dust-free operation
4. Automated Silo Handling System
We integrated a full material handling system:
Screw conveyors
Pneumatic feeding system
Dosing control units
PLC-based automation system
System Integration in CIL Process
The installed silo system is fully integrated into the gold processing flow:
Ore Crushing → Ore Silo → Grinding Mill → Leaching Tanks
↑
Lime Silo System
↓
pH Control & Dosing
↓
CIL Adsorption Tanks
Engineering Design Support
We also provided full engineering support, including:
Silo foundation design
Anchor bolt layout drawings
Structural load calculations
Installation and erection guidance
Site adaptation for uneven terrain
Project Results
After system implementation, the client achieved:
Stable Leaching Performance
Consistent pH control in CIL tanks
Improved cyanide utilization efficiency
Increased Gold Recovery Rate
More stable adsorption process
Reduced chemical loss
Reduced Downtime
Eliminated frequent blockage issues
Improved continuous operation capability
Lower Operational Cost
Reduced manual labor requirements
Optimized reagent consumption
Why This Mining Silo System Matters
In gold CIL plants, material stability directly affects gold recovery efficiency.
A well-designed silo system ensures:
Stable chemical dosing
Continuous ore flow
Controlled leaching conditions
Improved overall plant efficiency
Conclusion
This 2000 TPD gold CIL project in Congo demonstrates how a properly engineered mining silo system can significantly improve gold processing performance.
Our silo solutions are widely applied in:
Gold CIL / CIP plants
Flotation plants
Mineral processing facilities
We provide not only silo equipment, but also complete engineering design and material handling solutions for mining projects worldwide.
Get Engineering Support for Your Mining Project
If you are planning a gold processing plant, we can provide:
Mining silo system design
Lime silo & dosing solutions
Foundation & structural drawings
Turnkey material handling systems
Contact us for a customized mining silo solution.
