Zithini ii-electrode ze-graphite kunye ne-needle coke?

Ii-electrode zegrafiti zezona zinto ziphambili zokufudumeza ezisetyenziswa kwisithando sombane se-arc, inkqubo yokwenza intsimbi apho inkunkuma evela kwiimoto ezindala okanye izixhobo zinyibilikiswa ukuze kuveliswe intsimbi entsha.

Ii-oven zombane ezisebenzisa i-arc zibiza kancinci ukuzakha kunee-oven zemveli ezisebenzisa i-blast, ezenza intsimbi nge-iron ore kwaye zitshiswa ngamalahle aqhotsiweyo. Kodwa ixabiso lokwenza intsimbi liphezulu kuba zisebenzisa i-steel slap kwaye zisebenza ngombane.

Ezi electrode ziyinxalenye yesiciko sesithando somlilo kwaye zidityaniswe zibe ziintsika. Umbane udlula kwii-electrode, wenze i-arc yobushushu obukhulu enyibilikisa intsimbi elahliweyo. Ii-electrode zahlukile ngobukhulu kodwa zingafikelela kwi-0.75 yeemitha (iinyawo ezi-2 nesiqingatha) ububanzi kwaye zibe ziimitha ezi-2.8 (iinyawo ezi-9). Ezona zinkulu zinobunzima obungaphezu kweetoni ezimbini.

Kuthatha ukuya kuthi ga kwi-3 kg (6.6 lb) yee-electrodes ze-graphite ukuvelisa itoni enye yentsimbi.

Incam ye-electrode iya kufikelela kwi-3,000 degrees Celsius, isiqingatha sobushushu bomphezulu welanga. Ii-electrode zenziwe nge-graphite kuba yi-graphite kuphela enokumelana nobushushu obunjalo.

Emva koko isithando somlilo sijongwa ecaleni laso ukuze sithulule intsimbi enyibilikisiweyo kwiibhakethi ezinkulu ezibizwa ngokuba ziiladle. Emva koko iiladle zithwala intsimbi enyibilikisiweyo ziye kwi-caster yefektri yentsimbi, eyenza iimveliso ezintsha ngeenkunkuma ezisetyenzisiweyo.

Umbane ofunekayo kule nkqubo wanele ukunika amandla idolophu enabemi abayi-100,000. Ukunyibilika ngakunye kwisithando sombane sanamhlanje se-arc kuthatha malunga nemizuzu engama-90 kwaye kwenza iitoni ezili-150 zentsimbi, ezaneleyo kwiimoto ezimalunga ne-125.

I-Needle coke yeyona nto iphambili esetyenziswa kwi-electrodes abathi abavelisi banokuthatha ukuya kuthi ga kwiinyanga ezintandathu ukuyenza ngeenkqubo eziquka ukubhaka kunye nokubhaka kwakhona ukuguqula i-coke ibe yi-graphite.

Kukho i-needle coke esekwe kwi-petroleum kunye ne-needle coke esekwe kumalahle, kwaye zombini zingasetyenziselwa ukuvelisa ii-electrode ze-graphite. 'I-Pet coke' yimveliso ephuma kwinkqubo yokucocwa kweoyile, ngelixa i-needle coke esekwe kumalahle yenziwe nge-coal tar evela ngexesha lokuveliswa kwe-coke.

Apha ngezantsi kukho abavelisi abaphambili be-graphite electrodes ababekwe ngokwezinga lokuvelisa ngo-2016:

Igama leNkampani Indlunkulu Izabelo zobuchule

(,000 iitoni) YTD %

I-GrafTech US 191 Yabucala

Yamazwe Ngamazwe

I-Fangda Carbon China 165 +264

*SGL Carbon eJamani 150 +64

*Showa Denko Japan 139 +98

KK

I-Graphite eIndiya eIndiya 98 +416

Ltd

I-HEG India 80 +562

I-Tokai Carbon Japan 64 +137

Co Ltd

I-Nippon Carbon eJapan 30 +84

Co Ltd

I-SEC Carbon eJapan 30 +98

*I-SGL Carbon ngo-Okthobha ka-2016 yathi iza kuthengisa ishishini layo le-graphite electrode kwiShowa Denko.

Imithombo: GrafTech International, UK Steel, Tokai Carbon Co Ltd