Ukusebenzisana
UBUCIKO
UBUHLE NEMPILO
UBUCIKO BEZANDLA
AMASIKO NOMLANDO
EZOKUZIJABULISA
IMVELO
UKUDLA NEZIPHUZO
REVERSE ENGINEERING
IZAYENSI
EZEMIDLALO
UBUCHWEPHESHE
IZINTO EZIGQOKWAYO
Graphite Electrodes from Petroleum Coke and Pitch
Graphite electrodes carry the current that melts scrap steel in electric arc furnaces. They are made from petroleum coke mixed with coal tar pitch as a binder. The paste is extruded and shaped, baked to carbonise the pitch, and then graphitised by heating to nearly 3000 °C, where the carbon atoms arrange themselves into graphite. Industrial electrodes reach 3.5 m long and 75 cm across.
Osezingeni eliphezulu
Factory process
Imiyalelo
1
1
Mix the paste
Mix the paste
Mix petroleum coke with coal tar pitch, the binder.
Izinto zokwakha zalesi sinyathelo:
I-coke kawoyela1 as required
Itiyela lamalahle elijiyile1 as requiredAmathuluzi adingekayo:
Umshini wokuxuba unamathisela wekhabhoni2
2
Extrude and shape
Extrude and shape
Extrude the paste and shape it into electrodes.
Amathuluzi adingekayo:
Umshini wokucindezela unamathisela wekhabhoni3
3
Bake
Bake
Bake the shapes to carbonise the pitch binder.
Amathuluzi adingekayo:
Uhhavini wokubhaka ikhabhoni4
4
Graphitise
Graphitise
Heat the baked carbon to nearly 3000 °C. At that temperature the carbon atoms arrange themselves into graphite.
Amathuluzi adingekayo:
Uhhavini wokwenza i-graphiteIzinto
2- 1 as requiredIsibambeli
- 1 as requiredIsibambeli
Amathuluzi Adingekayo
4- Isibambeli
- Isibambeli
- Isibambeli
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CC0 Isizinda Somphakathi
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