I-Needle coke ludidi oluphezulu oluphuhliswe ngamandla kwizinto zekhabhoni. Inkangeleko yayo iqinile elinemingxuma enesilivere engwevu kunye ne-metallic luster. Isakhiwo sayo sinobume obucacileyo obuhambayo, sinemingxuma emikhulu kodwa embalwa kunye nemilo emile okweqanda kancinci. Yinto ekrwada yokuvelisa iimveliso zekhabhoni eziphezulu ezifana ne-electrode yamandla aphezulu kakhulu, izinto zekhabhoni ezikhethekileyo, i-carbon fiber kunye nezinto zayo ezidityanisiweyo.
Ngokwezinto ezahlukeneyo ezisetyenzisiweyo, i-needle coke inokwahlulwa ibe yi-oil needle coke kunye ne-coal needle coke. I-Needle coke eveliswa kwi-petroleum residue yi-oil needle coke. I-needle coke eveliswa kwi-coal tar pitch kwaye inxalenye yayo yi-coal series needle coke.
Izalathisi ezichaphazela umgangatho we-needle coke ziquka uxinano lokwenyani, umxholo wesalfure, umxholo we-nitrogen, i-volatile matter, umxholo womlotha, umlinganiselo wokwandiswa kobushushu, i-resistivity, uxinano lokungcangcazela, njl. Ngenxa yomlinganiselo ohlukeneyo we-index, i-needle coke inokwahlulwa ibe yi-super grade (umgangatho ogqwesileyo), ibanga lokuqala kunye nebanga lesibini.
Umahluko ekusebenzeni phakathi kwe-coke yamalahle kunye ne-oyile neenaliti ziquka la manqaku alandelayo.
1. Phantsi kweemeko ezifanayo, i-electrode yegrafiti eyenziwe nge-oil needle coke kulula ukuyibumba kune-coke yeenaliti zamalahle.
2. Emva kokwenza iimveliso zegrafiti, uxinano kunye namandla eemveliso zegrafiti ze-oil-series needle coke ziphezulu kancinci kunezo ze-coal-series needle coke, ezibangelwa kukwanda kwe-coal-series needle coke ngexesha le-graphitization.
3. Ekusetyenzisweni kwe-graphite electrode, imveliso ye-graphitized ye-oil needle coke inomlinganiselo ophantsi wokwandiswa kobushushu.
4. Ngokuphathelele ii-indexes ezibonakalayo nezeekhemikhali ze-graphite electrode, ukumelana okuthe ngqo kwemveliso ye-graphitized ye-oil needle coke kuphezulu kancinci kunokwemveliso ye-coke yeenaliti zamalahle.
5. Eyona nto ibalulekileyo kukuba i-coke yokulinganisa amalahle iyakhula xa ubushushu bufikelela kwi-1500-2000 ℃ kwinkqubo ye-graphitization yobushushu obuphezulu, ngoko ke izinga lokunyuka kobushushu kufuneka lilawulwe ngokungqongqo, kungabi kukunyuka kobushushu ngokukhawuleza, kungcono ukungasebenzisi imveliso yenkqubo ye-graphitization yochungechunge, i-coke yokulinganisa amalahle ngokongeza izongezo ukulawula ukwanda kwayo, izinga lokwanda linokuncipha. Kodwa kunzima ngakumbi ukufikelela kwi-coke yeoyile yenaliti.
6. I-calcined oil needle coke ine-coke encinci kunye nobukhulu obuncinci be-particle, ngelixa i-coal needle coke ine-content encinci kunye nobukhulu obukhulu be-particle (35 — 40 mm), enokuhlangabezana neemfuno zobukhulu be-particle yefomula, kodwa izisa ubunzima kubasebenzisi.
7. Ngokwentshayelelo yeJapan Petroleum Coke Company, kukholelwa ukuba ukwakheka kwe-oil needle coke kulula kune-coke yamalahle, ngoko ke kulula ukulawula ixesha lokucola kunye nexesha lokufudumeza.
Ukusuka apha ngasentla, i-oil needle coke inezine ezisezantsi: i-low false specific gravity, i-low strength, i-low CTE, i-low specific resistance, iimveliso zokuqala ezimbini ezisezantsi ukuya kwi-graphite, iimveliso zokugqibela ezimbini ezisezantsi ukuya kwi-graphite ziyathandeka. Lilonke, i-oil series needle coke ingcono kune-coal series needle coke, kwaye imfuno yesicelo nayo ingaphezulu.
Okwangoku, i-graphite electrode yeyona mfuno iphambili ye-needle coke, imalunga ne-60% yesicelo siphela se-needle coke, ngelixa amashishini e-electrode enemfuno ecacileyo yomgangatho we-needle coke, ngaphandle kwemfuno yomgangatho eyenzelwe wena. Imfuno ye-needle coke yezinto ze-anode zebhetri ye-lithium ion yahlukahlukene ngakumbi, imakethi yedijithali ephezulu ithanda i-oyile ephekiweyo i-coke, imakethi yebhetri yamandla ixhomekeke ngakumbi kwi-coke enexabiso eliphezulu lokusebenza.
Imveliso ye-Needle coke inomda othile wobugcisa, ngoko ke amashishini asekhaya anqabile. Okwangoku, amashishini asekhaya avelisa i-needle coke aquka: i-Weifang Fumei new Energy, i-Shandong Jingyang, i-Shandong Yida, i-Jinzhou Petrochemical, i-Shandong Lianhua, i-Bora Biological, i-Weifang Fumei new energy, i-Shandong Yiwei, i-Sinopec jinling Petrochemical, i-Maoming petrochemical, njl. Iinkampani zemveliso ye-needle coke ze-coal series Baowu carbon material, i-Baotailong technology, i-Anshan open carbon, i-Anshan Chemical, i-Fang Daxi ke Mo, i-Shanxi Macro, i-Henan open carbon, i-Xuyang Group, i-Zaozhuang revitalization, i-Ningxia Baichuan, i-Tangshan Dongri new energy, i-Taiyuan Shengxu njalo njalo.
Ixesha lokuthumela: Oktobha-19-2021