IṢẸ́ ỌNÀ
ẸWÀ ÀTI ÌLERA
IṢẸ́ ỌWỌ́
ÀṢÀ ÀTI ÌTÀN
ÌṢERÉ
ÀYÍKÁ
OÚNJẸ ÀTI OHUN MÍMU
REVERSE ENGINEERING
SÁYẸ́ǸSÌ
ERÉ ÌDÁRAYÁ
ÌMỌ̀-Ẹ̀RỌ
ÀWỌN OHUN WÍWỌ̀
Barium Sulphide: Heavy Spar Roasted with Coal
Barium sulphide is the barium half of lithopone, the white pigment. Thorpe (1912): roast 100 parts of heavy spar with 20 parts of coal slack or charcoal. Caking bituminous coal soaks through the mass and reduces it completely; with charcoal, mix very thoroughly. The roasted mass still holds carbon and some unchanged spar: hot water takes out the barium sulphide. Left in air it turns to carbonate and smells of rotten eggs, so keep it closed.
The picture: our own drawing.
Àárín
1 day
Ìlànà
1
1
Grind and mix
Grind and mix
Grind 100 g of heavy spar and 20 g of bituminous coal slack and mix them very thoroughly.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Baráìtì (Òkúta Wúwo)100 gÀwọn irinṣẹ́ tí a nílò:
Èédú òkúta bituminous
Odó àti Ọmọ Odó
Òǹwọ̀n ìdọ́gba2
2
Roast
Roast
Roast the mixture in a crucible in the furnace. The coal cakes and runs through the mass, reducing the spar.
Àwọn irinṣẹ́ tí a nílò:
Ìkòkò Amọ̀ Jíjìn
Ààrò Èédú
Ìbọ̀wọ́ Awọ3
3
Cool and close it up
Cool and close it up
Let it cool and put it straight into an airtight jar. It holds spare carbon and some unchanged spar; hot water dissolves out the barium sulphide when you use it.
Àwọn irinṣẹ́ tí a nílò:
Ìgò Gíláàsì Dúdú Onídìí Tí Kò Jẹ́ Afẹ́fẹ́ KọjáÌbọ̀wọ́ AwọÀwọn ohun-èlò
1- 100 gÀyè
Àwọn irinṣẹ́ tó nílò
7- Àyè
- Àyè
Ìtọ́nisọ́nà yìí ń ṣe
CC0 Àgbègbè Gbogbogbò
Blueprint yìí ti jáde lábẹ́ CC0. O lè ṣe àdàkọ, yí padà, pín, àti lò láìsí ìyọ̀ǹda.
Ṣàtìlẹ́yìn Olùṣẹ́dá nípa rírà àwọn ọjà nipasẹ̀ Blueprint wọn Ẹ̀san Olùṣẹ́dá tí àwọn Olùtajà gbé kalẹ̀, tàbí ṣẹ̀dá àtúnṣe tuntun ti Blueprint yìí kí o sì fi sínú Blueprint rẹ gẹ́gẹ́ bí ìsopọ̀ láti pín owó-wíwọlé.