Feldspar Ultra-Fine Grinding and Classifying Production Line in Turkey

I. Customer Background and Project Requirements

Turkey is one of the world’s major feldspar resource countries, boasting abundant reserves and high-grade deposits. Feldspar is widely used in ceramics, glass, enamel, refractories, and high-end fillers. As downstream industries increasingly demand higher powder fineness, whiteness, and narrow particle size distribution, traditional Raymond mills or ordinary ball mills can no longer meet the requirements of the premium market. A leading Turkish mining group specializing in feldspar deep processing decided to build a modern production line. They targeted high-efficiency feldspar ultra-fine grinding and classifying to process crushed raw ore directly into fine powder with D90 10μm. The line needed to deliver stable capacity, low energy consumption, narrow particle size distribution, good powder flowability, and minimal contamination. Previously, the group had encountered bottlenecks with imported equipment in terms of fineness consistency, operational stability, and maintenance costs. They urgently needed a cost-effective, reliable, and high-performance domestic solution.

II. Epic Powder Solution for Feldspar Ultra-Fine Grinding and Classifying Production

Leveraging over 20 years of expertise in ultra-fine powder technology, Epic Powder (Qingdao Epic Powder Machinery Co., Ltd.) provided the customer with a tailor-made “Ball Mill + Air Classifier” closed-circuit grinding and classifying production line. We specifically designed this system for silicate minerals like feldspar and quartz. It fully considers feldspar’s Mohs hardness (6-6.5), grindability, and iron sensitivity.

Core Equipment Configuration:

Parameter	Setting / Result
Material Processed	Potassium / Sodium Feldspar
Core Equipment	Epic Powder Ultrafine Ball Mill + Vertical Multi-Turbine Classifier
Wear Protection	Alumina ceramic lining for the shell / High-alumina balls for grinding media
Final Particle Size (D90)	10μm
Process Feature	Closed-circuit loop; coarse particles automatically return for re-grinding

III. Operation Results and Performance Data

After three months of optimization and debugging, the line achieved full-load stable operation. Actual performance data showed:

• Product Fineness: Stably controlled at D90 = 8–10μm (verified by laser particle size analyzer), with a narrow particle size distribution curve (excellent D10/D90 ratio), far exceeding customer expectations.
• Capacity: Stable hourly output of 2.5–3.5 t/h (slightly fluctuating depending on raw material moisture and hardness).
• Energy Consumption: Tonnage power consumption reduced by approximately 25%–30% compared to the customer’s previous equipment, thanks to the ball mill’s high-efficiency transmission system and the classifier’s precise cutting, which minimized ineffective recirculation.
• Product Quality: Whiteness ≥ 92, iron content effectively controlled below 0.1%, excellent flowability, no agglomeration, perfectly meeting the requirements for high-end ceramic glazes and fillers.
• Operational Stability: Trouble-free continuous operation exceeded 1,200 hours. The equipment features low noise, minimal vibration, and long maintenance intervals, significantly reducing downtime losses.