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Crushing and grinding process of copper ore

Time:2022-06-06 15:25:01

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Copper ore is the ore mined from copper mines. It can be processed into copper concentrate or copper ore with high copper content. The copper concentrate needs to be smelted and extracted to become refined copper and copper products. Types of copper ore: mainly natural copper, chalcopyrite, bornite, chalcocite, azurite, copper blue, etc. Application areas: Copper ore is mainly used in the metallurgical industry as a raw material for the metallurgical industry.

Copper ore processing and production process

The copper ore processing and production process mainly includes three processes: crushing, grinding and beneficiation.

In the crushing process, the three-stage closed-circuit crushing is more modern and suitable for the crushing of high-hardness copper ore, which can complete the work of ore crushing and partial dissociation, thereby improving the subsequent grinding efficiency.

In the grinding process, the two-stage one-closed grinding is an efficient grinding process, which can make the copper ore grind more fully.

Among the beneficiation processes, the most successful new processes that have appeared in recent years are mainly mixed flotation processes.

Stage 1: crushing and screening

The large pieces of copper ore are evenly sent to the jaw crusher or mobile jaw crushing station (primary crushing) by the vibrating feeder through the silo for coarse crushing.

Jaw crusher is mainly used for medium particle size crushing of ore and bulk materials, and can crush materials with compressive strength up to 320Mpa.

The structure is firm, the performance is stable, the crushing ratio is large, the output is high, the operation is convenient, and the operation is energy-saving.

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The coarsely crushed copper ore is screened by a vibrating screen, and then sent to a single-cylinder hydraulic cone crusher (medium crushing) by a belt conveyor for medium and fine crushing.

Cone crusher is widely used in the medium and fine crushing process of iron ore, copper ore, gold ore and other metal mines.

Solid structure, stable performance, automatic control, easy operation, integration of thin oil lubrication.

Stage 2: Grinding

The 0-12mm copper powder sieved by the vibrating screen is evenly sent to the ball mill for grinding, and sieved by the screw classifier, and those that do not meet the requirements are sent to the ball mill to continue grinding.

Ball mill: Ball mill is a more commonly used and efficient grinding equipment. It is suitable for grinding ore such as iron ore, gold ore, copper ore and lead-zinc ore and other metal beneficiation, used to grind the ore to below 0.075mm for subsequent beneficiation process. According to the different discharge methods, it can be divided into two types: lattice type and overflow type. The grinding methods can be divided into dry and wet grinding methods.

Stage 3: Magnetic selection

The copper powder that meets the requirements is sent to the flotation machine for mixed flotation.

Magnetic separator: Magnetic separator is a device that uses appropriate strength of magnetism to select iron powder in powdery granules. Magnetic separator is widely used in beneficiation, suitable for wet magnetic separation of magnetite, pyrrhotite, roasted ore, ilmenite and other materials with particle size below 3mm, and also used for coal, non-metallic ores, building materials and other materials. Iron removal is one of the most widely used and versatile machines in the industry.

Stage 4: Drying

The copper powder can be obtained by sending the obtained copper powder into a dryer for drying.

Dryer: Dryer is a commonly used equipment in mines after beneficiation, including a rotating drum, the inner drum is driven by a belt, and there is hot air around the drum to evaporate water. The drying drum adopts the principle of forward and reverse rotation of the drum to achieve the effect of drying the items without winding, so that the moisture in the material can be removed.

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