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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).
Àárín
1 day
Ìlànà
1
1
Melt the aluminium
Melt the aluminium
Melt 200 g of aluminium in a crucible in the furnace.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Ìṣù aluminiọ̀mù200 gÀwọn irinṣẹ́ tí a nílò:
Òǹwọ̀n ìdọ́gba
Ìkòkò ìyọ́
Ààrò Èédú
Ẹmú Ìkòkò Ìyọ́
Ààbò Ojú Gbogbo
Ìbọ̀wọ́ Awọ2
2
Pour it into water
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.
Àwọn irinṣẹ́ tí a nílò:
Omi
Bàkẹ́tì irin oní ìdéríẸmú Ìkòkò Ìyọ́Ààbò Ojú GbogboÌbọ̀wọ́ Awọ3
3
Dry the fragments
Dry the fragments
Lift the fragments out with a skimmer and dry them completely.
Àwọn irinṣẹ́ tí a nílò:
Ṣíbí oníhò4
4
Stamp to powder
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.
Àwọn irinṣẹ́ tí a nílò:
Ẹ̀rọ Lílù Òkúta
Ohun Ìsẹ́ Kékeré
Ìgò Gílásì OnídìíÀwọn ohun-èlò
1- 200 gÀyè
Àwọn irinṣẹ́ tó nílò
12- Àyè
- Àyè
- Àyè
- Àyè
- Àyè
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