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Gold Ore Processing Production Line

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Applicable scenarios: rock gold mines, placer gold mines, gold-bearing polymetallic mines, etc.
Recommended optimization direction: Customize the process in combination with ore tests, and give priority to energy-saving and environmentally friendly equipment.
 

The gold ore processing production line has become the core competitiveness of modern gold mining development with its five major advantages: high recovery rate, automation, environmental protection, flexible adaptation, and economic benefits. Whether it is a large mine or a small and medium-sized concentrator, a scientifically designed production line can significantly increase gold production and reduce operational risks. 

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Gold Ore Processing Production Line
Beneficiation Plant
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The gold ore processing production line includes crushing, grinding, beneficiation (gravity/flotation/cyanide leaching), and refining, involving key equipment such as jaw crushers, ball mills, and flotation machines; it is a complex process involving multiple steps to ensure efficient extraction of gold from ore.

 

Through the "crushing-grinding-flotation-leaching" combined process, the comprehensive recovery rate can be increased to more than 96%, and the processing cost per ton of ore can be reduced by 1-2 US dollars.

 

1. Crushing stage

• Coarse crushing: The raw ore is crushed to 100-200mm by a jaw crusher.

• Medium and fine crushing: The ore is further crushed to 10-30mm by a cone crusher or an impact crusher.

• Screening: The vibrating screen separates the qualified particle size, and the unqualified material is returned for crushing.

 

2. Grinding stage

• Ball mill: Grind the ore to 0.074-0.3mm (about 200 mesh) to form a slurry.

• Classification: The spiral classifier or hydrocyclone separates the fine particles, and the coarse particles are returned for re-grinding.

 

3. Ore dressing stage

Different methods are selected according to the type of gold ore:

      (1) Gravity separation (suitable for coarse gold)

      • Jig/shaker: Recover free gold by density difference.​​

      (2) Flotation (applicable to gold associated with sulfide ores)​​

      • Floatation machine: Add reagents (such as xanthate) to make the gold minerals attach to bubbles and separate tailings.

      (3) Cyanide leaching (applicable to fine-grained impregnated gold)​​

      • Leaching tank: The ore pulp is mixed with sodium cyanide solution, and the gold dissolves to form a complex.

      • Carbon adsorption (CIP/CIL): Activated carbon adsorbs gold, or directly electrolyzes and purifies.

 

​​4. Refining stage​​

• Smelting: High-temperature smelting (1000-1200℃) of gold-loaded carbon to obtain crude gold.

• Electrolytic refining: Crude gold is electrolytically purified to more than 99.9% purity.

 

5. Tailings treatment​​

• Tailings pond: Dry stack or backfill must meet environmental protection standards.

• Wastewater treatment: Neutralize cyanide (such as using bleaching powder) and recycle.

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Advantage
Gold Ore Processing Production Line advantage:
Flotation process plant_gold ore processing plant_copper ore processing plant

The gold ore processing production line can extract gold efficiently and environmentally friendly manner through a scientific process and advanced equipment, and maximize economic benefits. The following are its core advantages:

​​

1. High recovery rate, increase gold production

Advanced ore dressing process: Combined with gravity separation, flotation, cyanide leaching, and other technologies, the recovery rate is optimized for different types of gold mines (oxide ores, sulfide ores, associated ores) (up to 90% or more).

Fine control: Reduce gold loss and improve extraction efficiency through grinding particle size adjustment and reagent ratio optimization.

​​ ​​

2. High degree of automation and reduced labor costs

Intelligent control system: Adopt PLC/DCS automatic management, real-time monitoring of crushing, grinding, leaching, and other links, and reduce human errors.

Energy-saving equipment: High-efficiency ball mills, flotation machines, etc., reduce energy consumption, and automated conveying systems reduce human dependence.

 

​​3. Environmental compliance, reducing pollution risks​​

Green process​​:

• Cyanide wastewater treatment (such as ozone oxidation, activated carbon adsorption) meets the discharge standards.

• Tailings dry stacking or backfilling technology to prevent heavy metal pollution of soil and groundwater.

Compliance with international standards​​: Meet ISO 14001 and other environmental certification requirements to avoid legal risks.

​​

4. Flexible adaptation to different types of gold mines​​

Modular design​​: The process flow can be adjusted according to the characteristics of the ore (such as placer gold, rock gold, and associated gold), for example:

• Coarse gold​​ → Gravity separation (jigging machine + shaking table)

• Fine gold​​ → Flotation + cyanide leaching

• Complex ore​​ → Combined process (gravity separation + flotation + carbon adsorption)

 

5. Significant economic benefits and fast return on investment​​

Low cost and high return​​:

• Scaled production reduces the processing cost per ton of ore.

• By-products (such as sulfur concentrate and silver) can be comprehensively utilized to increase revenue.

Rapid production: Mature technology shortens the construction period, and stable production can be achieved in 6-12 months.

FAQ about gold ore processing production line

 

1. Which method of gold ore beneficiation has the highest recovery rate? ​​

✔ Coarse gold: gravity beneficiation (jigging machine + shaking table) can achieve a recovery rate of 80-95%.

✔ Fine gold: flotation + cyanide leaching combined process, with a recovery rate of more than 90%.

 

2. What key equipment is needed for gold ore processing? ​​

• Crushing: jaw crusher, cone crusher

• Grinding: ball mill, hydrocyclone

• Mineral processing: flotation machine, leaching tank, carbon adsorption tower

• Refining: smelting furnace, electrolytic cell

 

3. How to reduce the cost of gold ore processing? ​​

• Energy-saving equipment: such as a high-pressure roller mill to replace traditional crushing.

• Automation: reduce labor and energy waste.

• By-product recovery: comprehensive extraction of value-added products such as silver and copper.

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