The main component of limestone is calcium carbonate, which is brittle. The compressive strength varies according to the content of silicon contained. Normally it is medium hardness material between 120-160Mpa, and the abrasiveness of steel is small. There are many types of crushers suitable for limestone. The selection of limestone crushers should be considered according to the three factors of finished product size, output and maximum grain size. The following are some common equipment suitable for limestone crushing, please choose according to your actual needs.
The jaw crusher is mainly composed of a fixed jaw, a movable jaw, a frame, an upper and lower guard plate, an adjustment seat, and a moving rod. The working mode of the series of crushers is a curved extrusion type. During operation, the movable jaws periodically reciprocate the fixed jaws, and are sometimes close to each other and sometimes leave. When approaching, the material is crushed by crushing, splitting, and impact between the two jaws; when leaving, the material that has been broken is discharged from the discharge port by gravity. It is widely used in the crushing of various ores and bulk materials in industries such as mining, building materials, roads, railways, water conservancy and chemical industry. The highest compressive strength of the material to be crushed is 320 MPa.
The impact crusher is a crushing machine that uses impact energy to break up materials. When the machine is working, the rotor rotates at a high speed under the driving of the motor. When the material enters the action area of the hammer, it collides with the hammer on the rotor, and then is thrown to the counter-attack device to break again, and then rebounds from the counter-attack. Returning to the hammer action zone, the process is repeated. The process is repeated from large to small, and the first, second and third counter-attack chambers are repeatedly crushed until the material is crushed to the required particle size. The stone is discharged from the discharge port directly from the upper part of the machine. Falling into a high-speed rotating turntable; under the action of high-speed centrifugal force, another part of the flying stone that is shunted around the turntable in an umbrella type produces high-speed collision and high-density smashing. After the stone hits each other, it will be in the turntable and the casing. The vortex motion is formed between them to cause multiple blows and smashes. Widely used in building materials, ore crushing, railways, highways, energy, transportation, energy, cement, mining, chemical and other industries for medium and fine materials. The size of the discharge material can be adjusted, and the crushing specifications are diversified.
The cone crusher mainly consists of a frame, a horizontal shaft, a moving cone, a balance wheel, an eccentric sleeve, an upper broken wall (fixed cone), a lower broken wall (moving cone), a fluid coupling, a lubrication system, a hydraulic system, and the like. . During operation, the rotation of the motor is rotated by a pulley or a coupling, a cone crusher drive shaft and a conical crusher conical portion under a urging action of the eccentric sleeve. Therefore, the broken wall of the crushing cone is close to and sometimes leaves the surface of the shackle wall fixed on the adjusting sleeve, so that the ore is continuously subjected to impact, extrusion and bending in the crushing chamber to realize the crushing of the ore. Widely used in mining, smelting, building materials, roads, railways, water conservancy and chemical industries. The cone crusher has large crushing ratio, high efficiency, low energy consumption and uniform product size. It is suitable for medium and fine crushed ores and rocks.