Producing fine talc powder from granules: which mill is commonly used to achieve the required fine size?

Introduction / Context:
Talc is a soft mineral used in fillers and paints, needing fine particle sizes (often below 100 micrometres). Crushers produce coarse to medium sizes; mills are used for fine grinding.

Given Data / Assumptions:

• Starting form: talc granules.
• Target: fine powder suitable for industrial applications.

Concept / Approach:
Ball mills provide impact and attrition grinding in a rotating shell partially filled with grinding media. Talc, being soft and flaky, breaks down effectively in such mills to produce a controlled fine size with classification.

Step-by-Step Solution:
Eliminate primary crushers (jaw, gyratory) and roller crusher that give coarse products.Select a fine grinding device capable of sub-100 μm sizes → ball mill.Therefore, choose “ball mill.”

Verification / Alternative check:
Industrial talc circuits commonly use ball mills or vertical roller mills with downstream classifiers to meet product specs.

Why Other Options Are Wrong:
Crushers: designed for coarse reduction, not fine powder.

Common Pitfalls:
Overgrinding leading to excessive fines and energy use; neglecting closed-circuit classification.

Final Answer:
ball mill