Based on the characteristics of limestone materials, here are some recommended crushing equipment:

Ⅰ. Primary crushing equipment 
Jaw crusher
Features: Large feeding capacity, suitable for the coarse crushing of large limestone blocks.
Application: It is usually the first equipment in the limestone crushing product line, used for the preliminary crushing of large pieces of limestone materials.
PCZ Heavy hammer crusher
Features: Large feed particle size, wide adjustable range of discharge size, and high production capacity.
Application: It is also suitable for the coarse crushing of limestone and can replace jaw crushers for use in certain occasions.

Ⅱ. Medium and fine crushing equipment 
Impact crusher
Features: Good wear resistance, excellent discharge particle size, low content of fine materials and stone powder.
Application: The coarse crushed limestone is sent by the conveyor into the impact crusher for further crushing to meet the requirements of medium and fine crushing.
Hammer crusher
Features: Simple in structure, high crushing ratio, and high production efficiency
Application: It is suitable for the medium and fine crushing operations of limestone, especially when the tasks of crushing and shaping need to be completed simultaneously.
Ⅲ. Fine crushing and sand making equipment 
VSI sand making machine
Features: Small feed particle size, narrow adjustable range of discharge particle size, but high production capacity. Suitable for the production of limestone machine-made sand with large output and high quality.
Application: It is commonly used in the fine crushing stage of the limestone sand production line, to further crush the crushed limestone into sand particles that meet the requirements.
HVI sand making and shaping machine
Features: Similar to the VSI sand making machine, but with better shaping effect. It can produce limestone sand with more uniform particle shape and higher quality.
Application: It is also applicable to the fine crushing and shaping stages of the limestone sand production line.
Ⅳ. Auxiliary equipment 
Vibrating feeder
Features: It can feed materials into the crusher evenly, quantitatively and continuously.
Application: As the feeding equipment of limestone crushing production line, it ensures that the crusher can work continuously and stably.
Vibrating screen
Features: Through vibration, the sand and grave materials obtained from crushing or sand-making process are screened to obtain the required product specifications and gradations.
Application: It is used for screening crushed limestone. The stones that do not meet the specifications are returned to the crusher for further crushing until they meet the requirements for finished product specifications.
Conveyor
Features: It has the characteristics of continuous conveyance, reliability and convenience, long conveyance distance, low energy consumption, and large conveyance capacity.
Application: It is used to convey crushed limestone from one piece of equipment to another,achieving continuous operation of the entire production line.
 
In summary, the selection of limestone crushing equipment should be comprehensively considered according to specific production requirements, material characteristics, and site conditions. The recommended equipment above is only a common choice and not the only solution. Shentu Machinery can also provide customized solutions for customers.