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The grinding circuit
audit process
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The quality audit
consists in:
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- The triggering
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- The preparation
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- The execution
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- The study
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- The report
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The triggering:
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For what reason the audit
is triggered?
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It can be triggered
beforehand (preventive audit), for example before an investment.
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It
can be triggered a posteriori (corrective audit) after detecting or locating
anomalies or
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inefficiencies in the circuit.
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The preparation of the
audit consists in:
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- Definition of the target, objectives
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- Planning of The audit
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- Human resources required
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- Material resources required
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- Planning of The audit
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- Calculation of time required
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The audit consists in:
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- Collect technical data of the grinding
plant (technical form, flow-sheet)
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- Collect production data
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- Visit of The plant in operation
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- Visit of The electrical room
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- Taking samples in the circuit (mill
outlet, separator(s), filter(s), finished product)
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- Crash-stop of The mill (all auxiliaries
also)
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- Taking samples of The fresh feed (on
weighfeeders)
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- Checking of some auxiliaries like
separator (open The doors)
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- Mill inspection (all chambers)
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- Axial test sampling
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The study consists in:
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- Analysis of the sampling results (fresh
feed, axial test and circuit)
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- Analysis of The technical data
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- Analysis of The production data
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- Various calculations (with grinding
software)
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- Interpretations and comparisons
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The report consists in:
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- Preliminary pages (abstract, table of
contents, glossary)
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- Main report with introduction (in which
the aim and the objectives of the work are presented),
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development (with
calculations and tables) and conclusion and recommendations
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- Annexes with figures and sheets
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Time required:
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Generally,
3 days are required to carry out the visit on site and 3 days to realize the
study and
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write the report.
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These figures may be
different from one case to another.
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