Cement Manufacturing
Pyroprocessing and Kiln
Clinker Grinding, Milling and Separation Cycle Techniques
The closed grinding circuit: mill, separator and recirculation working as one system.
- Duration
- 5 days
- Contact hours
- 30
- Level
- Intermediate
- Fee from
- On enquiry
Overview
A grinding circuit is a loop, and tuning any part of it without the rest is how plants end up grinding harder for the same product. This week treats mill and separator together: breakage and classification, circulating load and what it is actually telling you, Tromp curves read properly, and the ball charge and liner decisions that set what the mill can do. Troubleshooting works from product quality and power draw back to the circuit condition.
Who should attend
Grinding and process engineers, mill operators and supervisors, maintenance staff responsible for mill internals, and quality staff working on fineness.
What you will be able to do
- Describe breakage and classification as one circuit.
- Calculate and interpret circulating load.
- Read a Tromp curve and act on it.
- Specify ball charge, grading and liner configuration.
- Diagnose a circuit from product and power data.
How it is taught
Short input, then work, across 5 days of roughly 6 teaching hours each. Exercises run on situations delegates bring rather than on a case study written for a different organisation. Cohorts are capped so that everybody is asked something.
Available as classroom, live online, in house.
Programme outline
Day 1
Breakage
- Comminution mechanisms in a tube mill
- Energy and fineness relationships
- Grindability and its measurement
Day 2
The mill
- Compartments, diaphragms and liners
- Ball charge, grading and filling degree
- Ventilation, temperature and water injection
Day 3
Separation
- Separator types and generations
- Tromp curve, cut size and bypass
- Separator tuning
Day 4
The circuit
- Circulating load and its interpretation
- Sampling a circuit properly
- Mass balance around the loop
Day 5
Troubleshooting
- Coarse product and over grinding
- Low throughput at normal power
- Coating, agglomeration and grinding aids
What you leave with
- A circuit audit for one mill.
- A Tromp curve from your own sampling.
- A ball charge and separator adjustment plan.
Dates and fees
| Dates | Location | Format | Fee |
|---|---|---|---|
| 23 to 27 November 2026 | Cairo, Egypt | Classroom | US$1,500 |
| 30 November 2026 to 4 December 2026 | Dubai, United Arab Emirates | Classroom | US$1,500 |
| 7 to 11 December 2026 | Accra, Ghana | Classroom | US$1,500 |
| 14 to 18 December 2026 | Cape Town, South Africa | Classroom | R15,000 |
Fees are per delegate and cover tuition, all programme materials and the certificate. Travel, accommodation and visas are arranged by the delegate. Registration closes two weeks before a programme starts.
Certificate
A GATI certificate recording what was attended, issued after the programme has run and attendance has been taken. Attending at least 80 per cent of the days earns a certificate of completion; attending less earns a certificate of attendance stating exactly what was attended. Every certificate carries a code that anybody can check against GATI's own record.
It records participation. and GATI does not claim one it does not hold.