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Ferroboron: Colemanite Reduced by Ferrosilicon above 2000 °C in an Arc Furnace (Hansen, GE, US 982,135, 1911)
Ferroboron should carry little carbon, so Hansen reduced the boron mineral colemanite with silicon instead of coke. The silicon takes the oxygen, joins the lime as a calcium silicate slag, and the boron goes into the iron of the ferrosilicon.
Result: ferroboron, low in carbon, under a clean slag.
Source: Hansen, US 982,135 (1911). Not given: weights, boron content. Picture drawn by Youblob.
Juu
1 day
Maagizo
1
1
Dehydrate the colemanite at 450 °C
Dehydrate the colemanite at 450 °C
Heat colemanite to about 450 °C in a suitable container to drive off its water.
Vifaa kwa hatua hii:
Kolemaniti1 as requiredZana zinazohitajika:
Tanuri ya muffle2
2
Powder and mix with ferrosilicon
Powder and mix with ferrosilicon
Grind it and mix with powdered ferrosilicon: enough silicon to reduce all the boron and slag off the lime. The amount depends on the silicon content of the ferrosilicon.
Vifaa kwa hatua hii:
Ferosilikoni1 as requiredZana zinazohitajika:
Kinu na mchi3
3
Bind and press into pellets
Bind and press into pellets
Mix the powder with a binder, e.g. water glass, and press it into pellets.
Zana zinazohitajika:
Glasi ya maji (myeyusho wa silikati ya sodiamu)
Mashine ya kubana vidonge4
4
Reduce above 2000 °C
Reduce above 2000 °C
Heat the pellets above 2000 °C, e.g. in a Moissan arc furnace (a ferrosilicon-type resistance furnace also works). Silicon reduces the boron; the calcium silicate slag separates cleanly from the ferroboron.
Zana zinazohitajika:
Tanuru la tao la umemeVifaa
2- 1 as requiredKishikilia Nafasi
- 1 as requiredKishikilia Nafasi
Zana Zinazohitajika
5- 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.