Gravity Separation Case Study: Removing Sand from Charcoal in South Africa 

Project Overview

Located in a coal processing facility in South Africa, this project aimed to enhance the purity of charcoal by eliminating the significant amounts of sand and mud mixed in with raw materials. To ensure that the final product meets international carbon purity standards, the plant adopted a charcoal sand removal system based on gravity separation equipment.

This solution not only boosts the quality of the final coal product but also supports eco-friendly and energy-efficient operations. For more insights into similar applications, visit our 
Coal Processing Applications page.

Separation Process

The adopted charcoal sand separation method leverages the density difference between coal and silica sand to achieve high separation efficiency. The process involves several key machines working in a continuous, automated flow:

 
• Linear vibrating screen for initial material classification

 
• Spiral chute for separating fine coal particles from fine sand

 
• Jig separator for coarse particle gravity separation

 
• Dewatering screen to reduce moisture before final packaging

Each piece of equipment contributes to a streamlined, low-noise, and low-maintenance operation. This gravity separation process is highly suitable for plants looking to optimize throughput and carbon quality at minimal operational cost. For more detail on the working principles, check out our 
Gravity Separation Guide.

Equipment Configuration

This layout is ideal for low-cost sand removal from coal in small to medium-sized facilities. The equipment lifespan exceeds 10 years with proper maintenance, and daily operational requirements are minimal. To explore other configurations, browse our full range in the 
Gravity Separation Equipment Category.

Results & Benefits

 
• Increased charcoal purity by over 20%

 
• Reduced ash and silica content

 
• Improved downstream processing and product value

 
• Minimal water and power consumption

 
• Simple setup with scalable potential

The plant now reports fewer equipment blockages, faster material throughput, and significantly higher customer satisfaction due to consistent product quality. These results demonstrate how a well-planned gravity system can transform production efficiency in resource-rich regions like South Africa.

Are you facing similar challenges with muddy raw coal or low-purity charcoal? We offer customized solutions tailored to your capacity and site conditions.

📩 Contact us today for an equipment quote and site-specific flowchart.