Gold Ore Flotation Production Line and Process Solution

I. Overview

Flotation process is the most widely used method for processing rock gold ore in gold processing plant, especially suitable for sulfide mineral gold-bearing ores with high floatability. The flotation process of gold production line can maximize the enrichment of gold into sulfide minerals, and the tailings can be directly discarded, featuring low beneficiation cost and high recovery rate. About 80% of rock gold ores are selected by flotation process. We have rich experience in the field of metal ore beneficiation, and can provide complete gold ore flotation production line and process flow solutions. This article will introduce the process flow, key equipment and technical points of gold ore flotation production line in detail.

Second, gold ore flotation production line process flow

1. Ore preparation stage

• Raw ore bin: store the raw gold ore, convenient for uniform feeding.

• Jaw crusher: rough crushing of raw ore, reduce the size of ore.

• Cone crusher (optional): further medium crushing, improve crushing efficiency.

• Belt conveyor: conveys the crushed ore to the next process.

2. Grinding and Classification

• Ball mill: grind the ore to suitable fineness, so that the gold minerals can be fully dissociated.

  • Grinding fineness requirement:

    • Gold in sulfide minerals: only sulfide ore monomer dissociation.

    • Gold in conjunction with veinstone: need to achieve the dissociation of gold monomer, the specific fineness is determined by the test.

• Classification equipment (such as spiral classifier or hydrocyclone): control the particle size of grinding products to ensure that qualified particles enter the flotation.

3. flotation separation

• Slurry adjustment tank: adjust the slurry concentration and add flotation chemicals (such as trapping agent, frothing agent, etc.).

• Flotation machine: through the inflatable agitation, make the gold minerals and air bubbles combined to form a foam layer.

  • Roughing: adopt higher pulp concentration to improve the recovery of gold.

  • Concentration: Adopting lower slurry concentration to enhance the grade of concentrate.

  • Sweep Separation: Recover the residual gold in the tailings and reduce the metal loss.

• Automatic dosing machine: precisely control the dosage of chemicals to optimize the flotation effect.

4. Product Processing

• Concentrate dewatering: through concentration, filtration and other steps, reduce the water content of the concentrate to facilitate transportation and smelting.

• Tailings treatment: tailings can be directly discarded or stored in tailings storage, in line with environmental protection requirements.

• Gold concentrate: the final product, sent to the smelter to extract gold.

Third, the key equipment of gold ore flotation production line

1. Crushing equipment: Jaw crusher, cone crusher (for coarse and medium crushing).

2. Grinding equipment: ball mill (used with classifying equipment).

3. Flotation equipment: mechanical stirring flotation machine, aerated flotation machine.

4. Auxiliary equipment:

   • Automatic dosing machine (precise control of dosage of chemicals).

   • Pump (slurry transportation)

   • Dewatering equipment (thickener, filter press).

Fourth, the technical points of the gold ore flotation process flow

1. Grinding fineness

• Determined by the nature of the ore, the best fineness needs to be determined through testing.

• Excessive grinding will lead to increased sludge, affecting the flotation effect.

2. slurry concentration

• Roughing: higher concentration, improve recovery.

• Concentration: lower concentration, improve concentrate grade.

3. Pharmaceutical system

• Capture agent: promote the combination of gold minerals and air bubbles.

• Foaming agent: stabilize the foam layer.

• Adjusting agent: adjust the pH value of ore pulp, optimize the flotation environment.

4. Flotation time

• Need to be determined by test to ensure that the gold minerals are fully flotation.

V. Application scope of gold ore flotation process

• Applicable ore types:

  • Sulfide gold-bearing quartz vein ores with fine gold grains.

  • Polymetallic gold-bearing sulfide ores (such as gold-copper ore, gold-lead-zinc ore).

  • Carbon-bearing (graphite) ores.

• Not applicable ores:

  • Coarse-grained gold (usually by gravity separation or cyanidation).

  • Oxidized ore (need to cooperate with leaching process).

Six, gold ore flotation process flow solution advantages

✔ High recovery: maximize the enrichment of gold minerals by optimizing the flotation parameters.
✔ Low energy consumption: adopt high efficiency grinding and flotation equipment to reduce production cost.
✔ Automation control: automatic dosing, online monitoring, improve process stability.
✔ Environmental protection design: tailings compliant treatment, reduce environmental pollution.

Gold flotation process is the core method of rock gold ore sorting, and its key lies in the reasonable configuration of grinding fineness, pharmaceutical system and flotation flow. We can provide customized gold ore flotation production line and process solutions according to the characteristics of the ore, from crushing, grinding to flotation and dewatering, the whole process is optimized to ensure high recovery rate and economic benefits.

For more detailed technical support on gold ore beneficiation or gold ore flotation production line equipment selection, please contact us for gold ore flotation solutions and quotes!