Size Reduction

Size Reduction

• Size reduction is a process used in various industries to decrease the size of solid materials.
• It plays a crucial role in numerous applications, including mineral processing, pharmaceuticals, food production, and chemical manufacturing.

Objectives of Size Reduction

1. Increase Surface Area:

   • Enhancing the rate of chemical reactions.
   • Improving solubility and mixing efficiency.

2. Improve Handling and Processing:

   • Facilitating transportation and storage.
   • Enhancing the uniformity of mixtures.

3. Control of Particle Size Distribution:

   • Producing materials with specific characteristics.
   • Ensuring consistent product quality.

4. Facilitate Separation Processes:

   • Aiding in the separation of valuable minerals from ore.
   • Improving efficiency in processes like filtration and sedimentation.

Mechanism

1. Compression:

   • Applying force to crush material between two surfaces.
   • Common in jaw crushers and roll crushers.

2. Impact:

   • Applying force rapidly, causing material to fracture.
   • Used in hammer mills and impact crushers.

3. Attrition:

   • Rubbing action between surfaces, leading to the wearing away of particles.
   • Common in ball mills and rod mills.

4. Cutting:

   • Shearing action to slice material into smaller pieces.
   • Used in knife cutters and shredders.

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