Limestone double deck with incline vibrating screen

Limestone double deck with incline vibrating screen utilizes reciprocating vibration provided by an exciter motor or eccentric shaft to cause the material to move forward in a continuous, jumping motion along the inclined screen surface. The inclination angle typically ranges from 15° to 25°. Under common operating conditions, this equipment achieves a screening efficiency of 85–95% and a screening accuracy of 80–90%.

The processing capacity ranges from 80–500 t/h, typically producing 2–3 grades of finished material, such as combinations of 0–5 mm, 5–20 mm, and 20–40 mm. Screen sizes are configured according to particle size requirements, such as an upper layer with 20–40 mm square holes and a lower layer with 5–20 mm square holes or woven mesh, to ensure appropriate gradation and throughput. The final product particle size range typically covers 0–40 mm or larger, meeting the needs of closed-loop crusher operation or finished aggregate production.

Limestone Double Deck with Incline Vibrating Screen Screening Process

The limestone double deck with incline vibrating screen features two identical vibrating motors symmetrically installed on both sides of the screen box. These motors rotate synchronously in opposite directions, canceling each other out along their axes. The centrifugal forces perpendicular to the axes converge into an excitation force, driving the screen body in an approximately circular motion. This causes the material to be thrown upwards and conveyed forward, allowing even fine particles to pass through the screen. The limestone raw material is fed into the feed box at the top of the screen by a feeder, evenly distributed on the upper screen surface. Material smaller than the upper screen openings falls to the lower screen, while larger coarse particles move along the slope of the screen surface to the front coarse material outlet. The material falling to the lower layer continues to be screened; finer materials are discharged from the bottom outlet, and medium-sized materials are discharged from the middle outlet. Screening is accomplished by vibration and gravity, ensuring a smooth material flow and preventing cross-contamination.

Limestone double deck with incline vibrating screen video demonstration

What are the advantages of the Limestone double deck with incline vibrating screen?

The Limestone double deck vibrating screen is suitable for processing limestone powder mixtures produced after limestone crushing. Its strong vibration prevents screen clogging, even with damp fine powder, allowing for smooth separation. The double-layer structure allows for grading on a single machine, separating raw materials into coarse, medium, and fine grades in one pass, simplifying the process and saving on equipment costs and space. The inclined screen box automatically moves the material forward; the angle, combined with the vibration, ensures sufficient material retention time on the screen surface without accumulating, making it ideal for loose materials like limestone. The screen is made of high-manganese steel or wear-resistant alloy steel, offering high wear resistance. The screen box side plates are welded from high-strength steel plates, ensuring robustness and durability. The vibration motor has an IP66 protection rating, is dustproof and waterproof, suitable for use in mining environments, and allows for adjustment of the eccentric block angle to change the excitation force, controlling the screening speed and throwing force of the material, adapting to limestone with different moisture content and particle sizes.

Limestone double deck with incline vibrating screen technical specifications

Application Example of Limestone Double Deck with Incline Vibrating Screen

An aggregate production line utilizes a Limestone double deck with incline vibrating screen. After two stages of crushing by a jaw crusher and an impact crusher, the mixture is conveyed to this double-layer inclined vibrating screen. By configuring a 40mm upper screen and a 12mm lower screen, the material is successfully separated into: >40mm aggregate is returned to the crusher for further crushing; 12-40mm high-quality aggregate is directly used in commercial concrete mixing plants; and 0-12mm fine material is partially sold as stone chips and partially sent to a sand making machine for further shaping. This demonstrates that the equipment can ensure products meet construction requirements and improve resource utilization.

The Limestone double deck with incline vibrating screen, through its double-layer screen surface, reasonable inclination angle design, and stable vibration force, can achieve dispersion, stratification, and screening of limestone materials, meeting the requirements of large throughput, multi-specification grading, and high precision. Its robust structure is suitable for continuous screening operations of hard limestone. It plays an important role in large-scale limestone quarries, aggregate production lines, and limestone powdering systems.