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 high-hardness copper ore crushing, and can complete the work of ore crushing and partial dissociation, thereby improving the subsequent grinding efficiency; The efficient grinding process can make the copper ore grind more fully; in the beneficiation process, the more successful new processes that have appeared in recent years are mainly the mixed flotation process.
Copper ore crushing equipment and beneficiation process
The first stage: crushing and screening
The large copper ore is evenly sent to the jaw crusher or mobile jaw crushing station (primary crushing) by the vibrating feeder through the silo for coarse crushing;
The coarsely crushed copper ore is screened by a vibrating screen, and then sent to a single-cylinder hydraulic cone crusher by a belt conveyor for secondary crushing;
The copper ore material after secondary crushing is sent to the multi-cylinder hydraulic cone crusher for fine crushing.
The jaw crusher is mainly used for medium-sized crushing of ore and bulk materials. It can crush materials with a compressive strength of up to 320Mpa. It can be divided into two types: coarse crushing and fine crushing. PE and PEW series jaw crushers have complete product specifications, the feeding particle size is 125mm~1020mm, and the ideal single machine output is up to 800t/h, which is the ideal equipment for primary crushing.
HST series single-cylinder hydraulic cone crusher is widely used in the medium and fine crushing process of iron ore, copper ore, gold ore and other metal mines. HST single-cylinder hydraulic cone crusher is a high-efficiency crusher designed with advanced technology from the United States and the performance of high-quality materials in the industry.
HPT series multi-cylinder hydraulic cone crusher is a new generation of high-efficiency hydraulic cone crusher launched on the basis of nearly 30 years of crusher research and development experience, combined with advanced technology at home and abroad, and after several generations of product development and application. On the basis of the traditional multi-cylinder hydraulic cone crusher with the main shaft fixed, the eccentric sleeve rotating around the main shaft structure and the principle of lamination and crushing, the HPT series has made a breakthrough in the optimization of the equipment structure, which has significantly improved the performance and crushing capacity of the equipment. The designed hydraulic lubrication system ensures the reliable operation of the equipment, and the operation control is more intelligent and humanized.
The tire-type mobile crushing station is widely used in the mine crushing process. It can overcome the obstacles brought by the crushing site, environment, complicated infrastructure and complicated logistics to customers’ crushing operations, and truly provide customers with efficient and low-cost hardware facilities for project operation. . Shanghai Shibang tire-type mobile crusher has been successfully applied to mine crushing projects at home and abroad, playing a huge role.
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 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 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.
Spiral classifier is one of the equipment for beneficiation. Spiral classifier is a kind of equipment for mechanical classification based on the principle that the specific gravity of solid particles is different, so the speed of precipitation in liquid is different. It can filter the material powder ground in the mill, and then rotate the coarse material into the feed port of the mill using the spiral vane, and discharge the filtered fine material from the overflow pipe.
Stage 3: Magnetic Selection
Send the copper powder that meets the requirements into the flotation machine for mixed flotation.
Magnetic separator is a device that uses appropriate strength of magnetism to separate 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 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 for evaporating 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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