Bond Grindability Test Ball Mill

A Bond Ball Mill is a laboratory grinding mill used to perform grindability tests and determine the work index of materials. It is designed for controlled grinding operations and includes features for safe handling, loading, and unloading of samples.

Concept Notes

• Work index may vary with product size (P)
• Variation depends on feed and product particle size distribution
• 80% passing size (F and P) may not fully represent actual size distribution
• Energy input remains proportional to crack length produced
• Exposure ratio of feed and product affects calculated work index
• Multiple tests or interpolation may be required for accurate results

• Laboratory grindability testing
• Determination of Bond Work Index (BWI)
• Mineral processing research and analysis

Mill size :

• 12″ x 12″

Ball charge :

• 44 ½ lbs

Drive :

• Electric motor with gear reducer

• Fabricated mill construction
• Digital revolution counter
• Jogging button for drum positioning
• Emergency stop button
• Includes stand
• Includes receiving pan
• Supplied with ball charge