UC-360
Stream Re-Treatment & Metal Balance
Closes the metal balance across furnace, converter and refinery, attributes the unaccounted gap, and ranks which streams to re-treat.
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The Challenge
Unaccounted metal loss in a smelter is written off at year end as an inventory adjustment. Feed weights, slag assays and stock counts are taken by different crews on different cycles and never tie out.
How It Works
- Reads furnace and converter process data, slag and dust assays, weighbridge and stock counts.
- Closes the balance per stream and attributes the unaccounted gap to measurement or process.
- Gives the metallurgical accountant a ranked re-treatment call per stream at campaign close.
What It Removes
- Year-end write-off of unaccounted metal loss
- Manual slag and dust assay collation
- Spreadsheet metal balances per campaign
Input Data RequirementsFurnace and converter historian tags, slag and dust assays, weighbridge tickets, anode and cathode weights, stock counts, metal accounting ledger
Output FormatRanked re-treatment shortlist by stream with the metal at stake, a closed campaign balance, and an audit trail behind every adjustment
“Every year we book a metal loss adjustment and nobody in the plant can tell me which stream it walked out of”