Irreversible reaction

Hydrate calcination

2Al(OH)3Al2O3+3H2O

Direction
Irreversible
Processes
1
Stated as
Fixed conversion
Heat of reaction
ΔH = 185,040 kJ/kmol (one process)
Element balance
Checked: balances
As the processes state itStoichiometry, conversions, heats of reaction and catalyst windows are taken from each process's files with their provenance. The build checks only that each process's equation balances in every element, from the process's own component formulas; it does not check the numbers. A process's design maturity applies to them.

Species

SpeciesNameCASRoleCoefficient
Al(OH)3Gibbsite14762-49-3reactant-2
Al2O3Aluminium oxide1344-28-1product1
H2OWater7732-18-5product3

In the processes

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

    CALC · Hydrate calcination2 Al(OH)3(s) → Al2O3(s) + 3 H2O(g)

    Stated as
    Fixed conversion
    Element balance
    Balances in every element
    Conversion
    100 % of AlOH3 (assumed: D-008: complete calcination; the product's LOI is carried as H2O)
    Heat of reaction
    ΔH = 185,040 kJ/kmol at 298.15 K, as written (assumed: formation enthalpies corundum -1675.7, H2O(g) -241.82 (NBS tables), gibbsite -1293.1 kJ/mol (Robie and Hemingway 1995))

Sources

What the processes cite for this reaction, each source once: for the reaction itself, its conversion, its heat of reaction or its catalyst. As the processes write them; DOIs, US patent numbers and web addresses are linked.

  1. D-008: complete calcination; the product's LOI is carried as H2O

    For the conversion · cited by Alumina by the Bayer process (3000 t/d smelter-grade alumina, concept)

  2. formation enthalpies corundum -1675.7, H2O(g) -241.82 (NBS tables), gibbsite -1293.1 kJ/mol (Robie and Hemingway 1995)

    For the heat of reaction · cited by Alumina by the Bayer process (3000 t/d smelter-grade alumina, concept)