Which comminution energy law is most appropriate for fine grinding where surface area increase dominates the energy requirement?

Introduction / Context:
Different empirical laws apply across size ranges. Choosing the correct law improves power estimates and equipment selection.

Given Data / Assumptions:

• Target is fine grinding with large increases in surface area.
• No numeric inputs; conceptual selection only.

Concept / Approach:
Rittinger’s law states energy is proportional to the new surface created, suiting fine size domains. Kick’s law fits coarse crushing where size ratios matter more than absolute surface. Bond’s law bridges the intermediate range with work indices.

Step-by-Step Solution:
Match regime: fine grinding → surface area governs.Select Rittinger’s law accordingly.

Verification / Alternative check:
Handbooks recommend Rittinger for micronization and milling where specific surface dramatically grows.

Why Other Options Are Wrong:
Kick/Bond: better for coarse and intermediate ranges.“None”: incorrect; Rittinger applies.

Common Pitfalls:
Using Bond indices blindly at very fine sizes, leading to misestimated energy.

Final Answer:
Rittinger’s law