Definitions
Total alumina production is the quantity of aluminium oxide trihydrate produced in a defined period and expressed as 100%, nominal aluminium oxide (Al2O3) equivalent, irrespective of further processing. Total alumina production figures have two components, that to be used for the production of aluminium (metallurgical grade alumina) and that to be used for any other purpose (chemical grade alumina).
Source of Data
The data included in this IAI Statistical Report have been derived exclusively from voluntary reports of IAI Member and non-Member companies. Sources outside the industry or estimates are used for “Estimated Unreported” and “China” regions only.
Data Aggregation
The IAI Statistical System is designed to meet the requirement that, in general, individual company data be included only within appropriately aggregated totals by declared geographical areas and not be reported separately. The declared geographical areas and the alumina producing countries which fall in those areas are detailed above.
One asterisk * indicates that the number is revised from previous publication. Two asterisks ** indicates that alumina production data were not reported to the IAI by the company or companies producing alumina solely within that country; these constitute “Estimated Unreported”, where data is available. Dates given against a country indicate that data were reported or not reported, as appropriate, for the limited period shown.
Data Integrity
The IAI considers the figures shown to be reliable, but they may be subject to revision.