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Ammonium Dihydrogen Phosphate from Superphosphate: Lagrange's Process
Monoammonium phosphate from superphosphate, by Lagrange's process (Thorpe, 1912). Water and steam wash the soluble phosphate out of the superphosphate. A little barium carbonate takes out the gypsum still dissolved, and ammonia in slight excess throws down the last of the lime. The clear liquor holds the salt.
The picture: our own drawing.
Kati
2 days
Maagizo
1
1
Leach the superphosphate
Leach the superphosphate
Stir the superphosphate with hot water and steam. Let the calcium sulfate (gypsum) settle and draw off the solution; Lagrange's came to about 42 °Tw.
Vifaa kwa hatua hii:
Superfosfeti ya chokaa1 kgZana zinazohitajika:
Sufuria yenye kuta ndefu
Maji
Kipima-uzito wa majimaji2
2
Take out the dissolved gypsum
Take out the dissolved gypsum
Some gypsum stays dissolved. Add barium carbonate carefully, a little at a time, then filter.
Zana zinazohitajika:
Kabonati ya bariamu (witherite)
Kitambaa laini cha pamba cha kuchujia
Chupa ya Kioo3
3
Add ammonia
Add ammonia
Wear gloves; ammonia stings. Add ammonia until in slight excess: all the lime comes down as a phosphate. Filter it off (it can go back into making superphosphate).
Vifaa kwa hatua hii:
Myeyusho wa amonia - asilimia 25-281 as requiredZana zinazohitajika:
Glavu za NaitriliKitambaa laini cha pamba cha kuchujiaChupa ya Kioo4
4
Crystallise the salt
Crystallise the salt
The clear liquor, at about 32 °Tw, holds the monoammonium phosphate. Evaporate it in a dish to crystallise the salt.
Zana zinazohitajika:
Kipima-uzito wa majimaji
Sahani ya KuvukiziaVifaa
2- Kishikilia Nafasi
- 1 as requiredKishikilia Nafasi
Zana Zinazohitajika
8- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
Mchoro huu unatengeneza
CC0 Umma Wote
Mchoro huu umetolewa chini ya CC0. Uko huru kunakili, kubadilisha, kusambaza, na kutumia kazi hii kwa madhumuni yoyote, bila kuomba ruhusa.
Saidia Mtengenezaji kwa kununua bidhaa kupitia Mchoro wao ambapo wanapata Kamisheni ya Mtengenezaji iliyowekwa na Wachuuzi, au unda marudio mapya ya Mchoro huu na uiunganishe kama kiungo katika Mchoro wako kuchangia mapato.