Roll Type Alumina Corundum Grinding Jars for Rolling Jar Mills

Description: These are cylindrical roll alumina ball mill jars specifically designed for use on rolling jar mills (also known as roller mills, tube rollers, or pot mills). Manufactured from high-purity 99% alumina ceramic, they offer an exceptional combination of wear resistance and contamination-free processing for mixing, blending, and grinding applications.

• Shape: Standard cylindrical roll shape. This long, straight-walled design is optimized for the tumbling and cascading motion generated by a rolling jar mill.
• Compatibility: Engineered to be mounted on the rollers of a standard rolling jar mill. The perfectly cylindrical surface ensures smooth, stable rotation without slippage or vibration.
• Sealing: Typically feature a securely bolted or clamped lid with a high-temperature resistant silicone or Viton® gasket. This provides a reliable, leak-proof seal, which is critical for:
  • Wet Grinding: Preventing solvent leakage.
  • Dry Grinding: Containing fine dust particles.
  • Inert Atmosphere Processing: Custom lids with gas valves can be fitted for processing air-sensitive materials.
• Sizes: Available in a wide range of standard and custom lengths and diameters, with common volumes from 0.5 liters (L) to 20 liters (L) or more for pilot-scale production.

• Superior Wear Resistance: The alumina ceramic construction is extremely hard (Mohs 9), making it highly resistant to abrasion from grinding media (balls) and sample materials. This ensures a very long operational lifespan, even with abrasive contents.
• Minimal Contamination: The primary advantage over steel jars. It introduces only trace amounts of inert alumina into your sample, which is critical for:
  • Maintaining Material Purity: Essential for advanced ceramics, chemicals, and electronics materials.
  • Accurate Analysis: Prevents metallic contamination (Fe, Cr, Ni) that would cause false readings in analytical techniques like XRF and ICP-MS.
• Chemical Inertness: Highly resistant to acids, alkalis, and a wide range of solvents, making it perfect for corrosive environments and wet grinding processes.
• High Compressive Strength: Withstands the constant pressure and tumbling weight of the grinding charge inside the jar.

• Optimized Grinding Kinetics: The roll shape is perfectly designed for the efficient cascading action inside a rolling mill, leading to effective mixing and progressive size reduction.
• Large Batch Processing: Roll jars are ideal for processing larger volumes of material compared to high-energy planetary ball mills, bridging the gap between lab-scale R&D and pilot-scale production.
• Consistent and Homogeneous Results: The tumbling action provides a thorough and uniform grinding and mixing process, which is ideal for blending composites and achieving a consistent particle size distribution.
• Robust and Durable: The solid ceramic construction can withstand continuous, long-duration milling runs common with rolling jar mills.

These jars are used across various industries for long-duration grinding, mixing, and blending:

• Ceramics Industry: Grinding and homogenizing glaze frits, clay bodies, and technical ceramic powders (e.g., zirconia, silicon carbide).
• Glass Industry: Mixing glass batch materials and grinding glass frit.
• Chemical & Catalyst Manufacturing: Blending and grinding chemical powders and catalysts where purity is essential.
• Paints, Coatings & Inks: Dispersing pigments and preparing inks without metallic contamination.
• Geology & Mining: Preparing large geological samples for analysis without introducing foreign metals.
• Electronics Material Production: Mixing and milling electronic component materials like ferrites and dielectrics.

Summary

Roll alumina ball mill jars are the optimal choice for rolling jar mills where the priority is on high-purity, large-volume processing through mixing, blending, and gentle grinding. Their wear-resistant ceramic construction ensures longevity and sample integrity, making them a fundamental tool for industries that cannot compromise on contamination.

Contact us to discuss your specific jar size requirements and milling applications. We offer customization options for lids, valves, and dimensions.