line diagram of cement mill

Here’s a simplified line diagram of a cement mill (ball mill or vertical roller mill) commonly used in cement plants:

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Cement Mill Line Diagram

“`
+——————-+ +——————-+ +——————-+
| Raw Material | | Grinding Mill | | Separator |
| Feed (Clinker + |—->| (Ball Mill / VRM)|—->| (Dynamic / |
| Gypsum + Additives)| | | | Static) |
+——————-+ +———+———+ +———+———+
^ |
| v
+—–+—–+ +—–+—–+
| Rejects | | Finished |
| Return |<————| Cement |
+———–+ | Product |
+———–+
“`

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Key Components:
1. Raw Material Feed:
– Input materials (clinker, gypsum, additives) are fed into the mill.

2. Grinding Mill:
– Ball Mill: Rotating cylinder with steel balls to grind materials.
– Vertical Roller Mill (VRM): Uses rollers to crush/clinker against a rotating table.

3. Separator:
– Dynamic/static separator separates fine (product) and coarse (rejects) particles.
– Rejects are returned to the mill for re-grinding.

4. Finished Cement:
– Fine powder exits as final cement product for storage/packaging.

—

Additional Notes:
– Air Flow: Hot gases may be used in VRM for drying raw materials.
– Closed-Circuit System: Common in modern mills (rejects are recycled).

For a detailed schematic, refer to cement plant engineering manuals or CAD diagrams from suppliers like FLSmidth, Polysius, or Loesche. Let me know if you need specifics!