Beneficiation equipment

Beneficiation equipment

According to the beneficiation process, it can be divided into crushing machinery (cone crusher, jaw crusher, box crusher, impact crusher, etc.), grinding machinery, screening and screening equipment machinery, sorting (sorting) machinery and dewatering machinery, as well as various production lines. The separation machinery is divided into gravity separation machinery, magnetic separator, flotation machine and special separation machinery according to the principle of action. Mineral processing machinery is also used in building materials, chemical industry, glass, ceramics and other industrial sectors. Mineral processing is the process of selecting useful minerals from the collected mineral raw materials according to the differences in physical, physical and chemical properties and chemical properties of various minerals. The machinery that implements this process is called beneficiation machinery, which is divided into crushing, grinding, screening, separation (separation) and dehydration machinery according to the beneficiation process.

The commonly used crushing machines include jaw crusher, cone crusher, roller crusher and impact crusher for mining equipment; The barrel mill is widely used in the grinding machinery, including rod mill, ball mill, gravel mill and self-mill, etc; Inertia vibrating screen and resonance screen are commonly used in screening machinery; Hydraulic classifier and mechanical classifier are widely used in wet classification.

(1) Jaw crusher: jaw crusher is commonly known as jawbreak, also known as tiger mouth. The crusher is composed of two jaw plates, the moving jaw and the stationary jaw, to simulate the movement of the two jaws of animals and complete the material crushing operation. It is widely used for crushing various ores and bulk materials in mining and smelting, building materials, highways, railways, water conservancy and chemical industries. The high compressive strength of the crushed material is 320Mpa.

(2) Cone crusher: cone crusher is suitable for crushing raw materials in metallurgy, construction, road construction, chemical and silicate industries

Crushing is divided into many types according to different crushing principles and product particle sizes. The cone crusher has large crushing ratio, high efficiency, low energy consumption, uniform product size, and is suitable for medium and fine crushing of various ores and rocks.

(3) Roller crusher: The roller crusher is applicable to the medium and fine crushing of materials with medium hardness, such as limestone, slag, coke, coal and other materials in the cement, chemical, power, metallurgy, building materials, refractory and other industrial sectors. This series of twin-roll crusher is mainly composed of roller, roller support bearing, pressing and adjusting device and driving device.

(4) Impact crusher: The impact crusher can handle materials with side length of 100-500 mm or less, and has a high pressure resistance of 350 MPa. It has the advantages of large crushing ratio and cubic particles after crushing. It is widely used in building materials, ore crushing, railways, highways, energy, transportation, energy, cement, mining, chemical and other industries for medium and fine materials. The discharge particle size can be adjusted, and the crushing specifications are diversified.

The separation machinery is divided into gravity separation machinery, magnetic separator, flotation machine and special separation machinery according to the principle of action. Among the sorting machines of mining equipment, the gravity separation machine appeared earlier. The first piston jig appeared in Germany from 1830 to 1840 for metal ore separation; Two magnetic separators (belt type weak magnetic separators) came out in 1888; The flotation machine appeared later, and the mechanical stirring flotation machine appeared in 1910.

Gravity beneficiation machinery is a kind of equipment that uses the difference between the density and particle size of ore particles and gangue to separate in the moving medium. What are the mining equipment including jig, heavy medium concentrator and centrifugal concentrator.

The jig uses the diaphragm, piston or compressed air to make the water in the water tank form water flow, so that the ore particles placed on the screen are stratified by density and size under the action of pulsating water flow. Dense ore particles pass through the bed stone layer on the screen and gather at the bottom of the water tank to become concentrate, which is discharged from the ore discharge port. There are mainly trapezoidal jigs, double-chamber movable cone-bottom jigs and compound vibration jigs used for metal ore separation; There are side drum jigs and air chamber jigs under the screen for coal preparation. Heavy medium concentrator uses suspension or heavy liquid as heavy medium to separate ore particles from gangue. It mainly includes heavy medium vibrating chute, heavy medium cyclone, inclined wheel heavy medium coal separator and vertical wheel heavy medium coal separator.

Centrifugal concentrator is a machine used to recover the metal particles in the fine slime. What are the main parts of the mining equipment. In the centrifugal force field generated by the high-speed rotation of the conical drum of the main machine, the heavy ore particles are deposited on the drum wall to become concentrate, and the light ore particles are attached to the surface of the concentrate, and are discharged from the drum under the action of the flow film (pulp flow) to become tailings.

The magnetic separator is a machine that uses the magnetic difference of various minerals to separate minerals with the help of magnetic force and mechanical force. The magnetic separator is composed of magnetic system, separation device, ore feeding and discharging device. There are many kinds of magnetic separators, including permanent magnetic cylinder magnetic separators, electromagnetic flat ring high intensity magnetic separators and high gradient high intensity magnetic separators.

The flotation machine is a machine that uses the differences in the physical and chemical properties of the surface of ore particles to separate fine minerals. The ore particle flotation machine is attached with flotation agent. By compressed air or mechanical stirring, the ore particles that are not easy to be wetted by water are attached to the bubbles (positive flotation method), and rise to the liquid level. The ore particles that are easy to be wetted by water are left in the tank and discharged as tailings.

The concentrate from wet beneficiation needs to be treated by dewatering machinery to separate solid and liquid. Dehydration machinery can be divided into thickeners, filters for mining equipment, centrifugal dehydrators and dryers.

Prospecting equipment

It mainly includes rotary drilling rig, rotary vertical shaft drilling rig, derrick (drill tower), winch, power machine (motor, diesel engine), mud pump and other equipment, as well as manipulator and pipe twisting machine and other auxiliary equipment.