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Cryogenic Grinding and the Attritor Edge

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Cryogenic grinding, which introduces low temperatures during the grinding process to improve the materials' processability, offers a number of inherent advantages. Using an internally agitated ball mill, like an Attritor, amplifies those advantages, providing additional benefits. View our slide deck to learn more or visit http://www.unionprocess.com

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Cryogenic Grinding and the Attritor Edge

  1. 1. Cryogenic Grinding & Attritors Presented by: www.unionprocess.com
  2. 2. A Definition Cryogenic grinding is a process of particle size reduction that introduces lower temperatures during grinding to curb recrystallization. Curbing recrystallization improves the materials’ processability by embrittling them so they can be fractured more easily with mechanical milling.
  3. 3. Advantages Cryogenic grinding rovides important advantages over grinding at ambient temperatures, particularly for materials that are too soft or too heat sensitive to be easily milled under routine conditions. These advantages include: • Increased production rates • Enhanced product quality • Greater uniformity in particle size distribution • Higher yields of particles in the target range
  4. 4. The Attritor Edge Cryogenic grinding is often performed in impact mills and hammer mills, but the use of an internally agitated ball mill, like an Attritor, can provide additional benefits. Attritors can generally grind to finer size particle size range than impact or hammer mills by combining the advantages of cryogenic temperatures with both impact and shear forces inherent to high energy internally agitated ball mills.
  5. 5. Other Factors Cryogenic grinding is most effective when the product is sprayed with liquid nitrogen as it is being conveyed and introduced into the Attritor. An additional benefit of cryogenic milling in an internally agitated ball mill is the ability to fully immerse the product in liquid nitrogen during milling. The level of liquid nitrogen in the milling chamber can be maintained via a thermocouple and liquid nitrogen flow controller system.
  6. 6. Applications Cryogenic milling is used for a wide range of materials, including: • Organic materials • Plastics and polymers • Rubbers • Metal powders
  7. 7. Contact Us for More Details Our skilled technical service representatives are always available for consultation and ready to assist you with the selection of the Attritor that best suits your particular needs. For assistance, contact us by calling (330) 929-3333 or by submitting this simple form. Union Process, Inc. 1925 Akron-Peninsula Road Akron, Ohio 44313

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