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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).
Katamtaman
1 day
Mga Tagubilin
1
1
Melt the aluminium
Melt the aluminium
Melt 200 g of aluminium in a crucible in the furnace.
Mga materyales para sa hakbang na ito:
Bareta ng aluminyo200 gMga kailangang kasangkapan:
Timbangang panimbang
Krisol
Pugon na Uling
Sipit ng Krisol
Panangga sa Mukha
Gwantes na Katad2
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.
Mga kailangang kasangkapan:
Tubig
Timbang metal na may takip
Sipit ng Krisol
Panangga sa Mukha
Gwantes na Katad3
3
Dry the fragments
Dry the fragments
Lift the fragments out with a skimmer and dry them completely.
Mga kailangang kasangkapan:
Butas-butas na sandok4
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.
Mga kailangang kasangkapan:
Galingang Pandurog
Pinong Bithay
Garapong Salamin na May TakipMga Materyales
1- 200 gPlaceholder
Mga Kinakailangang Kasangkapan
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