Introduction
As important strategic resources, rare earths are widely used in the field of high-tech due to their unique physical and chemical properties. The particle size distribution of rare earths powders directly affects their magnetic, catalytic and optical properties, and traditional classification technology is difficult to meet the needs of high purity and narrow distribution. As a professional air classifier manufacturer, Qingdao Epic Powder Machinery Co., Ltd. is committed to providing high-precision, low-energy consumption, pollution-free classification solutions for enterprises, including rare earths powders processing enterprises, to increase product added value and enhance market competitiveness.
Challenges in the classification of rare earths powders
◊ Strict granularity requirements
For example, NdFeB magnetic powder needs D50: 3~5μm, and the content of coarse particles (＞10μm) needs to be controlled to a certain range.
◊ Contamination prevention
Metal contact can easily introduce impurities, such as: Fe and Ni, and this can affect the purity of rare earths, such as : CeO₂, purity requirement is 99.99%.
Our solution: high performance air classifier
· Technical advantages
Precise particle size cutting: Using turbine classification technology and dynamically adjusting the rotation speed (1000~30000rpm) to achieve precise particle size cutting, suitable for various rare earth materials, such as: NdFeB and phosphors.
Zero metal contact design: The classifier chamber is coated with ceramics, such as alumina, zirconium oxide, or tungsten carbide coating. Meanwhile, permanent magnet separator is installed. Both can avoid iron contamination and ensure the purity of rare earths (such as La₂O₃ purity ≥ 99.95%).
· Practical application cases
Case 1: One of our customers, a NdFeB manufacturer, after using our classifier, the particle size consistency of magnetic powder was improved and the performance of sintered magnets (such as coercivity) was improved by 12%.
Case 2: Another of our classifier customers, a cerium oxide polishing powder customer, achieved stable mass production of D50: 0.5μm ultra-fine powder through multi-stage series classifying, replacing imported equipment.
Qingdao Epic Powder Machinery Co., Ltd. is a manufacturer specializing in the production of powder processing equipment with many years of production experience and technical accumulation.
Our products include: powder grinding equipment, classifying equipment, modification equipment and related auxiliary equipment. Air classifier is one of our main products, and it is designed and manufactured by our company under the guidance of our German consultant. Our air classifier includes 5 types: HTS, ITC, CTC, MBS and TDC, with high classification accuracy, low energy consumption, and good customer and market feedback.
If you are purchasing air classifier to classify rare earths or other materials, or need other powder processing equipment, please contact Epic Powder directly. We will provide you with a one-stop solution from equipment selection, solution design to installation and commissioning, and after-sales service.
Contact us and sincerely hope our professional equipment will help make your powder processing more efficient and intelligent!
