Limestone Tumbler Screen for Fine Powder

A mineral processing enterprise in Russia specializing in limestone powder production wanted to improve the quality and stability of its fine powder products. The customer was looking for a suitable limestone tumbler screen solution to optimize its production line, as its limestone powder is mainly used in construction additives and industrial fillers that require extremely high particle size uniformity.

Customer Requirements

During the project communication process, the customer outlined the following requirements:

Material: Limestone powder
Screening Mesh Sizes: 400 microns and 160 microns
Capacity Requirement: 1.5 tons/hour
Precision: High-precision fine powder classification
Environment: Minimal dust during operation
Maintenance: Reduced mesh blinding and easy maintenance
Stability: Stable equipment operation and low noise

The customer was particularly concerned about the 160-micron screening layer. The ordinary vibrating screens they previously used generated excessive vibration force, which not only caused unstable screening efficiency but also led to rapid wear and tear of the screen mesh.

Solution

Based on the analysis of the material characteristics:

Limestone powder bulk density
Particle size distribution
Material moisture content
Screening precision requirements
Feeding method
On-site installation space

After analyzing the material characteristics and production requirements, we recommended a limestone tumbler screen to achieve high-precision fine powder classification.

Equipment Configuration

Equipment Type: Tumbler Screen
Application Material: Limestone powder fine classification
Capacity: 1.5 tons/hour
Screen Mesh Specifications: First layer: 400 microns; Second layer: 160 microns
Screen Mesh Material: Stainless steel woven wire mesh
Equipment Material: Carbon steel main body (stainless steel optional for material contact parts)
Sealing Structure: Fully enclosed, dust-proof design
Discharge Outlet: Customized multi-outlet structure
Voltage: Customized according to the customer’s local standards

The limestone tumbler screen was designed with a fully enclosed structure to reduce dust and improve operating stability.

Features of the Tumbler Screen

Compared with conventional vibrating screens, the limestone tumbler screen provides more stable particle separation and reduces mesh blinding.

Higher Screening Precision: The unique gyratory screening motion of the tumbler screen allows the limestone powder to stay on the screen surface longer, resulting in a more stable classification effect—especially for the 160-micron fine powder screening.
Effective Reduction of Mesh Blinding: The gentle, elliptical motion trajectory significantly lowers the probability of mesh blinding, improving continuous production stability.
Less Dust and Smoother Operation: Compared to ordinary vibrating screens, the tumbler screens exerts a gentler vibration force, which effectively reduces dust escaping.
Extended Screen Mesh Lifespan: The lower mechanical impact force effectively extends the lifespan of the screen mesh, helping customers reduce later maintenance costs.
Noise Level at Around 75 dB: Moving parts swing from side to side rather than up and down like a vibrating screen, lowering noise levels while minimizing damage to the material.

Results

The production capacity reached the target of approximately 1.5 tons/hour.
The screening precision for both 400 microns and 160 microns performed excellently.
Oversized particles in the finished product were significantly reduced.
The frequency of equipment maintenance was notably lower than that of the original equipment.
The consistency of the final product was significantly improved.

Customer Feedback

The customer reported that the performance of this tumbler screen in limestone fine powder screening far exceeded the equipment they used previously. The screening precision is stable, mesh blinding issues have been significantly reduced, and product quality consistency has vastly improved. The customer also specially mentioned that the fully enclosed structure effectively resolved the workshop dust issue, making the on-site working environment much cleaner.

Conclusion

For ultra-fine powder materials like limestone powder, choosing high-precision screening equipment is crucial. If you are also processing fine powder materials and facing challenges such as mesh blinding, inaccurate screening, or unstable output, our engineering team can provide you with professional, customized screening solutions based on your material properties and production requirements.