Main Mineral Processing Technology Process Scheme & Equipment Selection For Rock Gold Ore

Gold recovery rate directly determines the economic benefit of gold mining projects. Different ore properties require targeted mineral processing technologies. For most sulfide-free hard rock gold ore, gravity separation beneficiation stands out as the most cost-effective solution, which is widely adopted by small and medium-scale gold mines across Africa, Southeast Asia and Oceania.

1. Common Rock Gold Ore Beneficiation Technical Routes

1.1 Closed-circuit Crushing & Screening

Raw ore is sent into the jaw crusher for primary coarse crushing. Materials are classified via circular vibrating screens afterwards. Qualified granular ore will be delivered to grinding equipment. Controlling stable feeding particle size can effectively cut energy consumption of grinding machines and prevent over-grinding issues.

Closed-circuit crushing and screening system for hard rock gold ore

1.2 Ore Grinding Process

The core purpose of grinding is to dissociate fine gold particles from gangue minerals. Two mainstream grinding combinations are widely used in rock gold mines:

1. Jaw crusher matched with ball mill Fit for medium and large capacity gold mines, supporting stable continuous industrial production.
2. Jaw crusher matched with wet pan mill Features low initial investment and easy operation, ideal equipment combination for small-scale rock gold projects.

Wanshihengtong wet pan mill for rock gold grinding operation

1.3 Gravity Separation Beneficiation

After grinding, gold particles are separated from waste rock by utilizing density differences. The mainstream gravity separation equipment includes shaking tables, spiral chutes and centrifugal concentrators. Shaking tables can produce high-purity gold concentrate. Spiral chutes serve for pre-separation to discharge lightweight gangue and improve overall processing capacity.

Shaking table applied in rock gold gravity separation

2. Two Mature Complete Process Flow for Rock Gold Ore

Scheme A: Small Scale 5–30TPH Gold Processing Line

Vibrating Feeder → Jaw Crusher → Wet Pan Mill → Centrifugal Concentrator → Shaking Table Advantages: Low investment cost, simple operation, small occupied area and low maintenance expense. This solution is highly popular among individual gold mine investors in Africa.

Scheme B: Medium Scale 30–100TPH Gold Processing Line

Vibrating Feeder → Jaw Crusher → Ball Mill → Spiral Classifier → Spiral Chute → Shaking Table Advantages: High automation level, stable daily output and higher gold recovery efficiency, suitable for standardized medium-sized mineral processing plants.

3. Key Factors Affecting Gold Recovery Rate

1. Ore grinding fineness: Inadequate grinding keeps gold wrapped inside rock particles and lowers recovery rate.
2. Feeding concentration of separation equipment: Excessively thick or thin ore slurry will damage mineral sorting performance.
3. Daily equipment maintenance: Regularly replace worn parts including lining plates and screen meshes to guarantee stable separation results.

4. Custom Beneficiation Solutions from Wanshihengtong

We are a source manufacturer supplying full-series gold mining machinery. Our product portfolio covers crushing equipment, grinding machines and gravity separation equipment. According to customers’ ore samples, target processing capacity, plant space and local power supply conditions, our engineering team designs exclusive beneficiation flow schemes.

All equipment can adapt to harsh mining environments with high temperature and heavy dust. We support factory inspection, on-site installation guidance and long-term after-sales technical service for global mining customers.

Get Custom Gold Beneficiation Flow Design

Send us your ore characteristics and target production capacity. Our technical team will provide professional process proposals and formal quotation. Contact Our Mining Engineer

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