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ẸWÀ ÀTI ÌLERA
IṢẸ́ ỌWỌ́
ÀṢÀ ÀTI ÌTÀN
ÌṢERÉ
ÀYÍKÁ
OÚNJẸ ÀTI OHUN MÍMU
REVERSE ENGINEERING
SÁYẸ́ǸSÌ
ERÉ ÌDÁRAYÁ
ÌMỌ̀-Ẹ̀RỌ
ÀWỌN OHUN WÍWỌ̀
Ferrosilicon: Silica, Carbon and Scrap Iron Smelted with Bituminous Coal in an Electric Furnace (Furness, US 1,284,645)
Carbon pulls the oxygen out of silica in an electric furnace, and the silicon alloys with iron in the charge. Furness swapped part of the coke or charcoal for lumps of bituminous coal, which keep the charge open and poorly conducting, so the electrodes sit deep and the heat stays in.
Result: ferrosilicon, tapped from the bottom of the furnace.
Source: Furness, US 1,284,645 (1918). Not given: silicon content, iron proportion. Picture drawn by Youblob.
Ilọsíwájú
Factory process
Ìlànà
1
1
Weigh the charge
Weigh the charge
Crushed quartzite (silica), charcoal or coke, and scrap steel or iron ore. Carbon: 24 parts per 60 parts of silica in theory, slightly more in practice; more if iron ore is used. Ours: quartz sand, iron filings, charcoal.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Iyanrìn Kuátsì60 parts
Erùpẹ̀ irin1 as requiredÀwọn irinṣẹ́ tí a nílò:
Èédú
Òǹwọ̀n ìdọ́gba2
2
Add lumps of bituminous coal
Add lumps of bituminous coal
Supply 20-40 % of the total carbon as bituminous coal (10 % or more works). It can go in coarse, lumps up to fist size, keeping the charge open to the gas.
Àwọn irinṣẹ́ tí a nílò:
Èédú òkúta bituminous3
3
Smelt with deeply bedded electrodes
Smelt with deeply bedded electrodes
Feed the charge into an electric furnace so the electrodes stay buried deep in it. The silica is reduced, carbon monoxide burns off at the top, and the alloy collects at the bottom. Ours: electric arc furnace.
Àwọn irinṣẹ́ tí a nílò:
Ààrò arc iná mọ̀nàmọ́ná4
4
Tap the ferrosilicon
Tap the ferrosilicon
Tap the molten ferrosilicon from the bottom of the furnace and let it set.
Àwọn irinṣẹ́ tí a nílò:
Ààrò arc iná mọ̀nàmọ́náÀwọn ohun-èlò
2- 60 partsÀyè
- 1 as requiredÀyè
Àwọn irinṣẹ́ tó nílò
4- Àyè
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