São Luís (Alumar) Alumina Refinery
Project information
As at 31 December 2025
Type:
Processing Facility
Type:
Processing Facility
Aggregation level:
Asset
Aggregation level:
Asset
Status:
Operating
Status:
Operating
Report standard:
-
Report standard:
-
Ownership %:
10
Ownership %:
10
Operator:
Yes
Operator:
Yes
Extraction:
Processing Facility
Extraction:
Processing Facility
Country:
Brazil
Country:
Brazil
Region:
Maranhão
Region:
Maranhão
Facility kind:
-
Facility kind:
-
Licensed capacity:
-
Licensed capacity:
-
Capacity unit:
-
Capacity unit:
-
Capacity period:
-
Capacity period:
-
Capacity kind:
-
Capacity kind:
-
Description
As at 31 December 2025
[Partial extraction — source text contained corrupted prose sections; tables recovered where machine-readable] Alumina refinery (Rio Tinto 10.0%). 2025 production 380 kt alumina (RT share).
Processing facilities
Multiple effective dates
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