Gold ore separation equipment

What are the components of Gold ore separation equipment：

1. Jaw crusher: coarse crushing of rock gold ore

2. Cone crusher: fine crushing of rock gold ore

3. Ball mill: Rock gold ore grinding treatment

4. Flotation machine: Rock gold ore flotation and selection

5. Spiral chute: gravity separation and enrichment of gold deposits

6. Shaker: Gold ore gravity and selection

7. Centrifugal concentrator: gravity separation of gold ore

8. Jig: Gravity separation of gold ore

9. Drum chute: gravity separation of sand and gold

10. Others: Classifiers, thickeners, etc

Gold ore separation equipment image：

Gold ore separation equipment introduce：

1、 Gold separation technology

At present, the mainstream gold separation technology generally involves crushing with a crusher, then entering a ball mill for crushing. Through gravity separation, flotation, extraction of concentrate and tailings, and finally smelting through chemical methods, the product ultimately becomes finished gold. The jaw crusher is mainly used for coarse crushing, the cone crusher is used for medium crushing, and the cone crusher and double roller crusher are used for fine crushing. Small and medium-sized gold selection plants mainly use two-stage closed circuit crushing, while large gold selection plants use a three-stage closed circuit crushing process. In order to improve production and equipment utilization, mineral processing plants generally follow the principle of more crushing and less grinding, reducing the particle size of the ground ore.

2、 Gold mine separation equipment

1. Rock gold ore separation and flotation equipment.

Flotation beneficiation is commonly used in vein gold mines. At present, the commonly used flotation machine in gold beneficiation plants is a mechanical stirring flotation machine.

Flotation equipment mainly refers to equipment such as flotation machines that achieve flotation processes. After the slurry is stirred and aerated, the mineral particles adhere to the bubbles under the action of various flotation agents, and the bubbles rise. The formation of mineralized foam layer is scraped off or overflowed by scraper. This series of flotation processes is completed in a flotation machine. Flotation machines are mostly composed of multiple tanks connected in series.

In most cases, the flotation method is used to treat highly complex sulfide minerals in gold bearing ores, and the effect is considerable. Due to the fact that flotation can not only enrich gold to a greater extent into sulfide mineral concentrates, but also dispose of tailings, resulting in low beneficiation costs.

The flotation method is also used to treat multi metal gold containing ores such as gold copper, gold lead, gold antimony, gold copper lead zinc sulfur, etc. For this type of ore, flotation method can effectively identify and select various gold bearing sulfide concentrates, which is conducive to the comprehensive recovery of mineral resources.

2. Sand gold separation and gravity separation equipment.

Gold placers often use heavy beneficiation. The main equipment for separating gold placers is various forms of chutes, jigs, and shakers.

2.1 Jigging gold separation method:

 It is a gold separation process using a jig as the gold separation equipment. Jigs are a commonly used gravity separation equipment with a wide range of types.

Principle: When the eccentric transmission mechanism drives the diaphragm to move back and forth, the vertical alternating pulsating water flow generated by indoor water passing through the screen is generated. The selected material is sent to the bed to form a particle system with the ore and water on the bed. When the water flows upwards, the particles become loose and suspended. At this point, minerals of different weights and sizes settle at different speeds, and high-density coarse particles (bed stones) settle in the lower layer. When the water flow decreases, minerals with high density and small particle size are sucked in and enter the lower layer through the bed gap.

2.2 Shaker separation gold method:

The shaker separation gold method is a gold separation process using a shaker as the main equipment. A shaker is a device for beneficiation in a horizontal medium flow, consisting of a bed surface and a transmission mechanism, which drives longitudinal reciprocating motion. During the reciprocating movement of the bed surface, the sorting of the ore on the shaking table is gradually completed.

Principle: In addition to its own gravity, the main factors that promote the movement of mineral particles are flushing and bed surface differential. The influence of mineral stratification perpendicular to the bed surface and separation parallel to the bed surface during movement. The result of these two functions is the discharge of different mineral particles from different sections of the bed surface. The shaking table can be divided into coarse sand bed (>0.5mm), fine sand bed (0.5-0.074mm), and mud bed (0.074-0.037mm).

2.3 Chute separation gold method: 

Chute separation gold method is an ancient gravity separation method that is still in use today. The main equipment for separating gold from the chute is the chute. A chute is a narrow wooden (or steel) chute with an inclination angle of 3-4 ° (not exceeding 14-16 °). The gold industry can manufacture locally.

The sorting principle is that after the slurry flows from the slot head to the chute, under the combination of water flow, ore particle gravity (or centrifugal force), and friction between ore particles and the slot bottom, different densities of ore particles are separated in loose layers. High density ore particles become concentrates at the bottom of the slot, while low density ore particles become tailings. Chutes are intermittent operations. When the concentrate at the bottom of the tank settles to a certain height, stop feeding and remove the concentrate.

Chutes are divided into coarse sand chutes and slurry chutes. The former is suitable for the treatment of coarse-grained materials, while the latter is suitable for the treatment of fine-grained materials. Coarse grain chutes are the main equipment for gold separation and are widely used on land and on gold mining vessels. Large chutes on land are generally around 15 meters long, while gold mining boats are generally 4-6 meters long.

2.4 Spiral concentrator separation of gold method: 

The spiral concentrator separation of gold method is a inclined channel beneficiation equipment that utilizes the comprehensive effects of gravity, friction, centrifugal force, and water flow to separate ore particles in proportion, size, and shape. Its characteristic is that the entire chute is vertically curved into a spiral shape.

The sorting process is as follows: the mortar provided above the chute flows downwards along the spiral line of the chute. Minerals are stratified during the flow process. Large particles with low density are distributed on the outer edge of the spiral groove, while fine particles with high density are distributed on the inner edge of the spiral groove. The heavy products after layering are discharged from the discharge port at the bottom of the inner groove, while the light products are discharged from the end of the spiral groove.

The spiral concentrator has a simple structure, convenient manufacturing, no transmission mechanism, and no power; The disadvantage is that selecting materials with a thickness of 6mm or more but 0.05mm or less results in poor flat gangue effect.

3、 Composition of gold mine separation equipment

The gold ore separation equipment mainly consists of centrifugal concentrators, chutes, shakers, skip machines, cyclones, cone crushers, ball mills, graders, flotation machines, thickeners, etc. The specific configuration of gold separation equipment and gold separation process is determined based on rock gold or sand gold.

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