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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. uMfumfu 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).
Ophakathi
1 day

Imiyalelo

1

Melt the aluminium

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

Izinto zokwakha zalesi sinyathelo:

Isigaxa se-aluminiumIsigaxa se-aluminium200 g

Amathuluzi adingekayo:

Isikali sesilinganisoIsikali sesilinganiso
Imbiza YokuncibilikisaImbiza Yokuncibilikisa
Isithando SamalahleIsithando Samalahle
Udlawu Lwesitsha SokuncibilikisaUdlawu Lwesitsha Sokuncibilikisa
Isivikelo SobusoIsivikelo Sobuso
Amagilavu EsikhumbaAmagilavu Esikhumba
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.

Amathuluzi adingekayo:

AmanziAmanzi
Ibhakede lensimbi elinesivaloIbhakede lensimbi elinesivalo
Udlawu Lwesitsha SokuncibilikisaUdlawu Lwesitsha Sokuncibilikisa
Isivikelo SobusoIsivikelo Sobuso
Amagilavu EsikhumbaAmagilavu Esikhumba
3

Dry the fragments

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

Amathuluzi adingekayo:

Isipuni esinezimboboIsipuni esinezimbobo
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.

Amathuluzi adingekayo:

Umshini wokugxobaUmshini wokugxoba
Isisefo EsicolekileIsisefo Esicolekile
Ijeke Lengilazi ElinesivaloIjeke Lengilazi Elinesivalo

Izinto

1

Amathuluzi Adingekayo

12

Le blueprint yenza

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Impuphu Ye-Aluminium

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