Nyob rau hauv xyoo tas los no, nrog kev txhim kho txuas ntxiv ntawm cov khoom lag luam uas yuav tsum tau muaj nyob rau hauv siab -kawg foundry thiab tshwj xeeb steel smelting, qis -sulfur, qis-nitrogen graphitized petroleum coke, ua cov khoom siv tseem ceeb hauv cov txheej txheem smelting, tau dhau los ua cov khoom siv tseem ceeb rau kev txhim kho zoo thiab kev txhim kho hauv kev lag luam purity{3} thiab kev ua haujlwm zoo tshaj plaws ntawm carbon.
Tsawg-sulfur, qis-nitrogen graphitized petroleum coke yog tsim los ntawm ultra-kev kub siab graphitization kev kho ntawm siab- zoo sponge coke ntawm 2800℃txog 3000℃hauv Atchison graphitization cub. Cov txheej txheem no tuaj yeem txo cov hmoov tshauv, cov teeb meem tsis zoo, cov ntsiab lus sulfur, cov ntsiab lus nitrogen, thiab lwm yam teeb meem hauv cov ntaub ntawv raw, thaum ua kom nws cov ntsiab lus ruaj khov. Tom qab sib sib zog nqus graphitization ua, cov khoom muaj cov yam ntxwv tseem ceeb xws li cov ntsiab lus carbon siab thiab tsis tshua muaj tshauv thiab impurities. Qhov saum toj no -tier qib siab carbon raiser khav theeb cov ntsiab lus ruaj khov ntawm 98.5% lossis txawm tias 99% lossis siab dua, thaum cov ntsiab lus sulfur nruj me ntsis tswj ntawm 0.03% thiab 0.05%, thiab cov ntsiab lus nitrogen yog qhov tseeb thiab ruaj khov nyob rau hauv qhov tsawg kawg nkaus ntawm 150 PPM txog 250 PPM. Thaum lub sij hawm smelting txheej txheem, no high - purity carbon raiser nkag integrates rau hauv molten hlau los yog hlau, ua kom tiav tus nqi nqus ntau tshaj 92%. Nws cov txiaj ntsig zoo thiab nrawm nrawm ua rau nws nyiam cov pa roj carbon ntau rau siab -kawg hlau hlau casting thiab smelting ntawm cov hlau tshwj xeeb.
Hauv kev siv cov tswv yim, qis-sulfur, qis-nitrogen graphitized petroleum coke yog dav siv hauv grey cam khwb cia hlau thiab siab-kawg ductile hlau casting, tshwj xeeb steel ntau lawm, thiab automotive qhov chaw tsim khoom. Vim nws tsis tshua muaj impurities thiab ntau graphite nuclei, nws zoo txhim kho microstructure ntawm castings, txhim khu lub hardness thiab hnav tsis kam ntawm steel, yog li pab downstream lag luam txhim kho cov yield thiab mechanical zog ntawm high-kawg castings. Tam sim no, cov pab pawg steel loj hauv tsev thiab cov tuam txhab ua lag luam carbon tau nquag nkag mus rau qib siab -kawg carbon raiser ua lag luam.
Yav tom ntej, raws li kev lag luam casting thiab steel txuas ntxiv hloov mus rau siab -precision thiab txiav- ntug teb, qis- sulfur thiab qis-nitrogen graphitized petroleum coke yuav tsis tsuas yog muaj raws li cov pa roj carbon- txhim kho cov khoom, tab sis kuj tseem yuav dhau los ua lub zog tseem ceeb ntawm kev tsim cov khoom zoo{5}. Ua raws li ntsuab thiab siab - txoj kev loj hlob zoo thiab nce kev tshawb fawb thiab kev siv cov qib siab -kawg carbon- txhim kho cov ntaub ntawv yog undoubtedly tib txoj kev rau Tuam Tshoj cov casting thiab steelmaking industries kom ua tau siab - kev loj hlob zoo.
