limestone crushing process

Introduction to limestone properties

Limestone is a medium hardness material type. Limestone has low silicon content and low abrasiveness. Limestone fracture is relatively easy and the production cost is relatively low. As long as the appropriate process configuration and equipment selection are used, a good crushing effect can be obtained.

Limestone has a low hardness (grades 4-5) and a low silicon content. The production cost of limestone crushing processing is relatively low. Due to the medium hardness and low abrasiveness of limestone, it is generally possible to adopt a smashing + counter-breaking process mode. Limestone crushing can also be used as a heavy hammer crusher, and the second stage is broken into pieces to break, which greatly reduces the investment cost. The promotion of the heavy hammer crusher in the limestone crushing process has greatly improved the working efficiency and production cost of the limestone crushing production line.


Introduction to limestone crushing process

Analysis of the advantages and disadvantages of using limestone crushing process as a secondary crushing

Due to the principle of impact crushing and breaking, the limestone is easy to be broken, and the crushing using the counterattack will produce more powder. Therefore, in the case that the customer does not have high requirements on the grain size of the stone, the two-stage smashing method can be used to reduce the proportion of the powder, and at the same time, the investment cost is relatively reduced.

In the limestone crushing process, if sand making is required, a high-efficiency horizontal crusher can be used. If the user has a relatively high requirement for the grain type, a vertical shaft impact crusher is required to meet the requirements.

Limestone sand making equipment has a wide range of options. In addition to the traditional jaw crusher, the second crush can directly use the impact crusher, so that a certain amount of mechanical sand can be broken from the secondary crushing. The three-breaking sand making machine can not only use the vertical shaft impact type sand making machine, but also the hammer type sand making machine. If a vertical shaft impact type sand making machine is selected, the rotor speed can be maintained at an appropriate medium speed, and one can reduce the amount of wear, which can avoid over-crushing.

For the limestone sand production line with small capacity, the hammer sanding machine can cancel the secondary crushing. After the head breaking output is properly reduced, the sand making machine can be directly used for the sand making operation.

In the cement industry, cement plants using limestone as raw materials are usually directly crushed by a single-stage hammer crusher, and the particle size after crushing can reach about 30 mm. This method of crushing is to break the limestone to the smallest possible size, regardless of the grain size problem. The single-stage hammer crusher achieves the goal of meeting the basic requirements with one crush. However, the discharge size of the single-stage hammer crusher is still relatively large, resulting in a larger grain size of the raw meal. It can be pre-grinded by grinding with other fine crushing equipment to achieve the purpose of more broken and less grinding.

Limestone crushing production line using traditional technology

Vibrating Feeder --- Jaw Crusher --- Impact Crusher ---- Vibrating Screen ---- Finished sand and gravel material, the machine between them can be connected by conveyor.

Firstly, the stone material is initially crushed by a feeder with a uniform jaw crusher. Then, the coarse material is conveyed by a belt conveyor to a counter-crusher for secondary crushing, and the finely crushed stone is sieved into a vibrating sieve to separate stones of different specifications. The stone returning material that does not meet the particle size requirement is broken again in the impact crusher.

Limestone crushing production line using new hammer crusher

The hammer crusher has a large particle size and high yield, which can replace the traditional secondary crushing, and is an energy-saving and efficient gravel equipment. The heavy hammer crusher is a limestone crushing production equipment tailored to the actual conditions of small sand and gravel plants in various parts of China. It has low investment, high productivity, and can create benefits in the shortest time and the advantage of recycling funds.

Stone hammer crusher is suitable for crushing compressive strength & 200; MPa, calcium content & ge; 40% medium hardness material, that is, the most suitable for crushing limestone. The hammer of the heavy hammer crusher adopts the internationally advanced AMC composite material independently developed by the company.

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