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Aluminium Powder: Molten Aluminium Shot into Water, then Stamped
siporex (Wikimedia Commons) · CC BY-SA 4.0
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18. Ukwakira 2026NO
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Aluminium Powder: Molten Aluminium Shot into Water, then Stamped

Aluminium powder is the fuel of the thermit reaction that turns metal oxides into metal. Thorpe (1912) gives how it was made: molten aluminium poured into water, and the small irregular fragments, once dry, pounded under stamp-mills until fine enough. Molten metal and water: face shield, gloves, and pour slowly. Keep the powder away from flame. The picture: aluminium powder (Wikimedia Commons).
Hagati
1 day

Amabwiriza

1

Melt the aluminium

Melt 200 g of aluminium in a crucible in the furnace.

Ibikoresho by'iyi ntambwe:

Igice cya aluminiyumuIgice cya aluminiyumu200 g

Ibikoresho bikenewe:

Umunzani w'ibiroUmunzani w'ibiro
Icyombo cyo gushongeramoIcyombo cyo gushongeramo
Itanura ry'amakaraItanura ry'amakara
Amakoro y'Icyombo GishongeshaAmakoro y'Icyombo Gishongesha
Ingabo y'IsuraIngabo y'Isura
Uturindantoki tw'UruhuUturindantoki tw'Uruhu
2

Pour it into water

Stand back behind the face shield and pour the metal slowly, in a thin stream, into a bucket of cold water. It sets as small irregular fragments.

Ibikoresho bikenewe:

AmaziAmazi
Indobo y'icyuma ifite umufunikoIndobo y'icyuma ifite umufuniko
Amakoro y'Icyombo GishongeshaAmakoro y'Icyombo Gishongesha
Ingabo y'IsuraIngabo y'Isura
Uturindantoki tw'UruhuUturindantoki tw'Uruhu
3

Dry the fragments

Lift the fragments out with a skimmer and dry them completely.

Ibikoresho bikenewe:

Ikiyiko gifite utwoboIkiyiko gifite utwobo
4

Stamp to powder

Pound the dry fragments under the stamp mill until the powder is fine. Sieve, return the coarse part to the stamps, and keep the powder in a closed jar.

Ibikoresho bikenewe:

Imashini Ikoma AmabuyeImashini Ikoma Amabuye
Ishungura ritoIshungura rito
Icupa ry'Ikirahure Rifite UmufunikoIcupa ry'Ikirahure Rifite Umufuniko

Ibikoresho

1

Ibikoresho bikenewe

12

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Ifu ya Aluminiyumu

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