OEM 5TPH-200TPH Gold Concentrator Machine 99% Recovery Rate

Gold concentrator suppliers in South Africa

1.Product Introduction Gold Ore Processing Equipment

The primary gold concentrator used in South African gold mines is the Knelson-type Water-Jacketed Centrifugal Concentrator, a high-gravity physical separation system. Its core structure features a high-speed rotating conical rotor equipped with internal grooves and a water-jacketed backwash system. It is specifically engineered to recover micro-fine gold with particle sizes ranging from 0.004mm to 0.074mm. With throughput capacities from 0.5 to 80 t/h, these units support fully automated discharge and are widely utilized in large-scale mines and tailings reclamation projects. Chinese-manufactured models (such as the STLB series) offer comparable recovery efficiencies with the same structural design but at a 30%–50% lower cost, making them the preferred choice for small-to-medium-sized South African mines.

2.Application Gold Ore Processing Equipment

• Industrial Placer Mining: Continuous gold extraction from alluvial deposits along the Limpopo and Vaal Rivers.

• Hard Rock Gold Pre-concentration: Serving as a gravity unit in grinding circuits to recover Gravity Recoverable Gold (GRG), significantly reducing subsequent cyanidation costs.

• Tailings Resource Recovery: Large-scale scavenging of historic tailings (grades 0.1–0.5 g/t) to maximize resource utilization.

• Environmental Compliance: Replacing traditional amalgamation processes to meet the non-toxic processing requirements of South Africa’s National Environmental Management: Mining Act (NEM:MA).

• Mobile Processing Platforms: Trailer-integrated systems for rapid deployment in remote mining regions and temporary sites.

3.Working Principle Gold Ore Processing Equipment

• Slurry Feeding: Slurry with a concentration of 30%–50% is pumped into the base of the conical rotor rotating at 100–400 rpm.

• Centrifugal Enrichment: The rotor generates 200–600G of centrifugal force. High-density gold particles are flung toward the inner grooves and captured, while light gangue overflows with the water.

• Fluidization System: Pressurized water (0.03–0.06 MPa) is injected through a hollow shaft into the cone jacket, forming a backwash water film that prevents the concentrate bed from compacting.

• Automated Discharge: The PLC system triggers a high-pressure backwash sequence at preset intervals (1–4 hours), flushing enriched concentrate into a secured collection box.

• Closed-Loop Operation: The system resets automatically after discharge, enabling 24/7 continuous operation without manual intervention.

4.Advantages Gold Ore Processing Equipment

• Ultra-High Recovery: Achieves 97%–99% recovery for fine gold (0.01–0.074mm), vastly outperforming traditional shaking tables (<60%).

• Fully Automated Operation: Supports remote monitoring and unattended operation, alleviating the pressure of high labor costs in South Africa.

• Regulatory Compliance: Mercury-free and cyanide-free, satisfying the Department of Forestry, Fisheries, and the Environment (DFFE) discharge standards.

• Low Energy Consumption: Power usage is below 0.8 kWh/t, with operating costs only 1/3 of flotation processes.

• Modular Scalability: With 80 t/h units available, multiple units can be paralleled for 100+ t/h systems to suit large plants.

• Durable Design: Critical components feature 304 stainless steel and wear-resistant ceramic coatings, providing a service life exceeding 8,000 hours.

• Rapid ROI: For a 100 t/h system, recovering 2–5 kg of gold annually typically results in a payback period of <12 months.

5.Technical Specifications

6.Our Solutions