Gold ore processing equipment

What are the Gold ore processing equipment

1. Gold ore processing equipment using gravity separation method

Sand gold processing equipment: mainly including jigs, shakers, spiral chutes, drum chutes, flat chutes, water jacket centrifuges, drum screens, ore washing machines, etc

Rock gold processing equipment: mainly including crushers, vibrating screens, ball mills, graders, jigs, shakers, spiral chutes, centrifugal gold concentrators, ore washing machines, chutes, etc

2. Flotation gold ore processing equipment

The main equipment is various types of suction type mechanical stirring flotation machines (SF type flotation machine, BF type flotation machine, JJF type flotation machine) and inflatable mechanical stirring flotation machines (KYF type flotation machine, XCF type flotation machine), as well as crushers, vibrating screens, ball mills, graders, etc.

3. Cyanide gold processing equipment

Mainly including zinc powder replacement device, leaching stirring tank, efficient and low consumption fast desorption electrolysis system, etc.

How to configure gold mining processing equipment? It is necessary to develop suitable gold mining processing processes based on information such as gold mining composition, in order to determine the selection and configuration of gold mining processing equipment. Welcome to consult us for communication and understanding.

Gold ore processing equipment image：

Gold ore processing equipment Details：

Gold processing technology

At present, the mainstream gold mining processing technology is generally broken by a crusher, which then enters 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.

Gold mine processing equipment

1、Gold mine processing 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 processing 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 processing and re selection equipment.

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

1.Jigging processing of placer gold: 

It is a process of processing placer gold using a jig as the gold processing 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. Shaker processing of placer gold: 

The shaker gold processing method is a process of processing placer gold 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).

3. Chute gold processing method: 

Chute gold processing method is an ancient gravity separation method that is still in use today. The main equipment for processing sand gold in chutes is chutes. 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 ore dressing in placer gold mines, 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.

4. Spiral beneficiation machine processing placer gold method: 

The spiral beneficiation machine gold processing method is a inclined groove 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、 Gold processing technology

1. Gravity processing technology of placer gold

We adopt a process flow of jig roughing, centrifuge sweeping, shaking table and mixed mercury method for beneficiation. While ensuring a large processing capacity, we also need to ensure a recovery rate. Only in this way can we ensure the economic benefits of low-grade placer gold ore beneficiation. Firstly, the original gold placer is fed into a drum screen (or cylindrical washing machine) through a loader to screen out large pieces of waste rock, avoiding the impact of large pieces of waste rock entering the jig on its normal operation. After removing large waste rocks, the fine sand enters the jigging machine for gold separation, and the coarse concentrate obtained from the jigging machine then enters the shaking table for separation to obtain the gold concentrate. The tailings from the jig enter the vibrating screen for screening, and all particles larger than 1mm are screened out to ensure that the feed particle size reaches the effective sorting particle size range of the centrifuge. The function of the centrifuge cleaning jig tailings is to improve the gold recovery rate of the entire process flow, and to recover the fine and flaky gold lost by the jig as much as possible. The concentrate of the centrifuge is mixed with mercury to extract gold through a mercury mixing cylinder, which is an internal mercury mixing equipment with a gold recovery rate of over 95%. It is one of the very ancient and practical gold extraction equipment.

2. Processing Technology of Sand Gold Mine Chute

Firstly, the original gold placer is fed into a drum screen (or cylindrical washing machine) through a loader to screen out large pieces of waste rock, avoiding the entry of large pieces of waste rock into the sticky gold chute and affecting its normal operation. Our drum screen (or drum washing machine) can directly remove coarse materials above 6mm, and fine sand less than 6mm enters the sticky gold chute for gold selection. The gold chute is cleaned every 2-4 hours, and the heavy sand is purified using a shaking table or mercury mixing method to obtain coarse gold.

3. Gold Mine Flotation Processing Technology

Flotation is the most widely used processing method for rock gold ore in gold beneficiation plants, commonly used to treat highly floatable sulfide minerals containing gold ore. The gold flotation processing process can maximize the enrichment of gold into sulfide minerals, and tailings can be directly discarded with low processing costs. Most rock gold mines are processed using this process.

4、 Composition of gold ore processing equipment

The gold mining processing equipment mainly consists of drum chutes, shakers, jigs, flat chutes, cyclones, cone crushers, flotation machines, centrifugal gold concentrators, ball mills, graders, thickeners, etc.

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