Silicon limestone is a critical material in modern industry, finding essential applications in coatings, plastics, construction materials, and composite manufacturing. Its performance is intrinsically tied to one key property: particle size. Traditional classification methods often struggle with the demands of high-volume precision, leading to inconsistent product quality and production bottlenecks. Epic Powder addresses these challenges head-on with our advanced HTS100/4 Air Classifier, engineered specifically to transform 325 mesh silicon limestone feed into precisely defined fine and coarse fractions at an industrial scale of 2000kg/h.

Technical Challenges and the HTS100/4 Solution
Silicon limestone presents unique processing characteristics. Its specific gravity, surface properties, and potential for agglomeration make achieving a sharp, clean cut between fine and coarse particles particularly demanding. When the feed material is a uniform 325 mesh (approximately 45 microns), the goal of isolating a fine fraction at D97: 1μm and a coarse fraction at D50: 15.7μm requires exceptional classification precision and stability.
Conventional centrifugal or sieve-based classifiers often suffer from broad particle size distributions, high energy consumption, or insufficient throughput for such a precise separation. The HTS100/4 classifier is built on a optimized aerodynamic design. Its multi-wheel classification system creates a highly stable and uniform centrifugal force field. This allows for the precise “cut” at the target micron level, effectively separating particles based on mass and aerodynamic diameter rather than size alone, which is crucial for materials like silicon limestone.

Specifications and Results
The Epic Powder HTS100/4 is not just about precision. It’s about delivering that precision at a volume that makes a difference to your bottom line.
Core Performance Data:
- Feed Material: Silicon Limestone
- Feed Size: 325 Mesh (~45μm)
- Processing Capacity: 2000 kg/h
- Fine Powder Specification: D97 ≤ 1μm
- Coarse Powder Specification: D50 = 15.7μm
- Model: HTS100/4
This performance is achieved through a combination of a large-diameter classification rotor, a precision air-flow regulation system, and a high-efficiency cyclone separation unit. The result is a system that delivers two valuable, in-spec product streams simultaneously with remarkable consistency. Compared to older generation classifiers, the HTS100/4 can achieve up to a 25% improvement in yield for the target fractions and significantly reduces the amount of off-spec middlings.

Operational and Economic Advantages
Beyond the technical specifications, the HTS100/4 is designed for real-world industrial environments.
Simplified Operation & Smart Control: The classifier features a user-friendly PLC control interface that allows operators to set and maintain key parameters like rotor speed and air volume with ease. This ensures repeatable results batch after batch, minimizing human error and product variation.
Low Maintenance & High Reliability: Built with wear-resistant materials in critical areas and a robust mechanical design, the HTS100/4 ensures extended service life and minimal downtime. Its layout allows for easy access for inspection and routine maintenance, keeping your production line running smoothly.
Exceptional Return on Investment (ROI): The 2000kg/h throughput directly translates to higher production capacity and revenue. The precision classification adds significant value to both output streams—the ultra-fine powder (D97: 1μm) commands a premium in high-end applications like specialty coatings and advanced polymers, while the precisely controlled coarse fraction (D50: 15.7μm) is ideal for high-fill composite materials. Furthermore, the system’s optimized airflow design reduces energy consumption per ton of processed material, lowering your operational costs.
A Proven Solution for Diverse Applications
While optimized for silicon limestone, the versatile HTS100/4 classifier is highly effective for a range of other non-metallic minerals with similar characteristics.
- Calcium Carbonate: For producing high-value GCC with tight cuts.
- Talc: Precise classification to improve brightness and texture for cosmetic and industrial grades.
- Kaolin & Other Functional Fillers: Achieving specific top-size controls for paper, rubber, and ceramic applications.
This versatility makes the HTS100/4 a strategic asset, future-proofing your investment as your product portfolio evolves.
Epic Powder
In today’s competitive market, consistent product quality and production efficiency are non-negotiable. The Air Classifier by Epic Powder provides a turnkey solution to master the classification of silicon limestone and other types of powder. We understand that every production line is unique. Epic Powder offers more than just equipment, but solutions. Our team of engineers is ready to discuss your specific material and capacity requirements.
Ready to transform your classification process?
Contact Epic Powder today to schedule a detailed technical consultation. Discuss your application, or arrange a test with your own material on our pilot-scale classifiers. Let us help you achieve superior product quality and unmatched operational efficiency.

“Thanks for reading. I hope my article helps. Please leave a comment down below. You may also contact EPIC Powder online customer representative Zelda for any further inquiries.”
— Jason Wang, Senior Engineer

