Graphite electrodes yog lub ntsiab cua sov siv nyob rau hauv ib tug hluav taws xob arc rauv, ib tug steelmaking txheej txheem uas seem ntawm cov qub tsheb los yog cov khoom yog melted los tsim tshiab steel.
Hluav taws xob arc furnaces yog pheej yig dua los tsim dua cov tsoos blast furnaces, uas ua cov hlau los ntawm hlau ore thiab yog fueled los ntawm coking thee. Tab sis tus nqi ntawm steelmaking yog siab dua vim lawv siv steel seem thiab siv hluav taws xob.
Cov electrodes yog ib feem ntawm lub qhov cub lub hau thiab tau sib sau ua ke rau hauv kab. Cov hluav taws xob ces dhau los ntawm cov electrodes, tsim ib qho arc ntawm cov cua sov uas melts cov seem hlau. Cov hluav taws xob sib txawv ntawm qhov loj me tab sis tuaj yeem ncav cuag 0.75 meters (2 thiab ib nrab taw) hauv txoj kab uas hla thiab ntau npaum li 2.8 meters (9 feet) ntev. Qhov loj tshaj plaws hnyav tshaj ob metric tons.
Nws yuav siv li 3 kg (6.6 lb) ntawm graphite electrodes los tsim ib tonnes ntawm hlau.
Lub taub ntawm lub electrode yuav ncav cuag 3,000 degrees Celsius, ib nrab ntawm qhov kub ntawm lub hnub saum npoo. Electrodes yog tsim los ntawm graphite vim tias tsuas yog graphite tuaj yeem tiv taus qhov kub siab heev.
Tom qab ntawd lub cub tawg yog muab tso rau ntawm nws sab kom muab cov hlau molten rau hauv cov thoob loj hu ua ladles. Cov ladles ces nqa cov hlau molten mus rau steel zeb lub caster, uas ua rau cov khoom tshiab los ntawm cov khoom siv rov ua dua tshiab.
Cov hluav taws xob xav tau rau cov txheej txheem no txaus rau lub zog hauv lub nroog nrog cov pej xeem ntawm 100,000. Txhua lub yaj hauv lub tshuab hluav taws xob niaj hnub no feem ntau siv sijhawm li 90 feeb thiab ua rau 150 tonnes hlau, txaus rau li 125 lub tsheb.
Koob coke yog cov khoom siv tseem ceeb siv hauv cov electrodes uas cov neeg tsim khoom hais tias tuaj yeem siv sijhawm txog rau lub hlis los ua cov txheej txheem suav nrog kev ci thiab rov ua dua los hloov cov coke rau hauv graphite.
Muaj roj-raws li koob coke thiab thee-based koob coke, thiab tuaj yeem siv los tsim graphite electrodes. 'Tus tsiaj coke' yog cov khoom lag luam los ntawm cov txheej txheem roj refining, thaum lub tshuab siv coke yog tsim los ntawm cov coke tar uas tshwm thaum lub sij hawm tsim coke.
Hauv qab no yog lub ntiaj teb sab saum toj cov neeg tsim khoom ntawm graphite electrodes ranked los ntawm kev tsim muaj peev xwm hauv 2016:
Tuam txhab npe Headquarters Capacity Shares
(,000 tonnes) YTD %
GrafTech US 191 Private
Thoob ntiaj teb
Fangda Carbon Tuam Tshoj 165 +264
* SGL Carbon Lub teb chaws Yelemees 150 +64
*Showa Denko Nyiv 139 +98
KK
Graphite Is Nrias teb Is Nrias teb 98 +416
Ltd
HEG India 80 +562
Tokai Carbon Nyiv 64 +137
Co Ltd
Nippon Carbon Nyiv 30 +84
Co Ltd
SEC Carbon Nyiv 30 +98
*SGL Carbon thaum Lub Kaum Hli 2016 tau hais tias nws yuav muag nws cov lag luam graphite electrode rau Showa Denko.
Tau qhov twg los: GrafTech International, UK Steel, Tokai Carbon Co Ltd
Post lub sij hawm: May-21-2021