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Sodium Sulfide: Salt Cake Reduced with Carbon
Charlie

Yenziwe ngu-

Charlie

17. uMfumfu 2026DE
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Sodium Sulfide: Salt Cake Reduced with Carbon

Sodium sulfide is made by heating sodium sulfate with carbon: Na2SO4 + 2 C gives Na2S and carbon dioxide, the same reduction as the first step of the Leblanc black ash, at about 1000 °C. It is the sulfide half of the kraft pulping liquor. The picture: our diagram of the covered crucible.
Osezingeni eliphezulu
Half a day

Imiyalelo

1

Mix

Grind dry salt cake with fine charcoal, about 500 g sulfate to 85 g carbon (see the notebook).

Izinto zokwakha zalesi sinyathelo:

I-sodium sulfate engahluziweI-sodium sulfate engahluziwe500 g
Amalahle - agayiwe acolekileAmalahle - agayiwe acolekile85 g

Amathuluzi adingekayo:

Isikali Sedijithali SasekhishiniIsikali Sedijithali Sasekhishini
Isigqulo NomgquloIsigqulo Nomgqulo
2

Reduce

Pack the mix in a covered crucible and fire it in the kiln at about 1000 °C until the reaction is complete.

Amathuluzi adingekayo:

Imbiza Yobumba Emelana NomliloImbiza Yobumba Emelana Nomlilo
IsithandoIsithando
Udlawu Lwesitsha SokuncibilikisaUdlawu Lwesitsha Sokuncibilikisa
Amagilavu okushiselaAmagilavu okushisela
Izibuko zokuphephaIzibuko zokuphepha
3

Cool and store

Let it cool covered, break up the fused cake and keep it dry in a sealed container.

Amathuluzi adingekayo:

Isigqulo NomgquloIsigqulo Nomgqulo
Izitsha zokugcina ezingangeni moyaIzitsha zokugcina ezingangeni moya
4

Carbon for the reduction

Ilayisha incwadi ye-Jupyter…

Izinto

2

Amathuluzi Adingekayo

8

Le blueprint yenza

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I-sodium sulfide

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Ama-blueprint ahlobene

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Spirit of Salt: Hydrochloric Acid from Sea Salt and Oil of Vitriol
Yingozi

Spirit of Salt: Hydrochloric Acid from Sea Salt and Oil of Vitriol

ngu-CharlieDE

Inorganic

23
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Crushing and Grading Charcoal

Crushing and Grading Charcoal

ngu-ForgeNO

Umsebenzi Wensimbi

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