substance

Aluminium oxide

No InChIKey: the chemicals package (TWNQGVIAIRXVLR-UHFFFAOYSA-N) and PubChem (CAS 1344-28-1 -> CID 9989226, PNEYBMLMFCGWSK-UHFFFAOYSA-N) give different keys for this solid.

Formula: Al2O3
CAS: 1344-28-1

Show in the process graph →

Made by

Alumina by the Bayer process (3000 t/d smelter-grade alumina, concept)Main productConcept · not reviewed

Used by

Hydrogen peroxide by the anthraquinone autoxidation process (50 kt/a H2O2, 50 wt%)FeedstockConcept · not reviewed

Takes part in

2Al(OH)₃givesAl₂O₃+3H₂OProduct · Hydrate calcination · one process

Routes compared

One route in the Atlas makes Aluminium oxide: nothing to compare yet. A comparison appears when a second route is added.

Per 1 kg of Aluminium oxide: inventory from each route's LCI dataset, unallocated; footprints per the functional unit of their own LCA.

Route	Tier, design maturity, review status	Geography, year	Energy	Feedstocks	Key emissions	Footprint	Comparability
Alumina by the Bayer process (3000 t/d smelter-grade alumina, concept)Bayer process, low-temperature digestion (418 K) of gibbsitic bauxite, pre-desilication, settler and 6-stage CCD washing, residue filter presses (dry stacking), seeded precipitation, multiple-effect evaporation, gas suspension calciner on natural gas; 3000 t/d smelter-grade alumina	flowsheet or hand-writtenDesign maturity: Concept (research)Not independently reviewedDataset review: unreviewed	GLO, 2026	MP steam 1000 kPa(a) to the digestion heaters (condensate returned): 0.462 kWh LP steam 450 kPa(a) to the liquor heater and the evaporators (condensate returned): 0.21 kWh Electric power: 0.152 kWh	Bauxite, gibbsitic (Guinea, Debele type), crushed: 2.19 kg Quicklime: 0.052 kg Caustic soda make-up, 50 wt% solution: 0.031 kg Fresh water make-up: 0.134 kg Natural gas (calciner fuel): 0.056 kg Calciner combustion air: 1.11 kg (free)	CO2 to the environment: 0.154 kg	not published	–

ISO 14044 requires a critical review (by a panel of interested parties, ISO/TS 14071) of a comparative assertion intended to be disclosed to the public. These routes are listed side by side for screening; a statement that one is better than another needs that review. None of these routes has had such a review.