I-Needle coke ludidi oluphezulu oluphuhliswe ngamandla kwizinto zekhabhoni. Inkangeleko yayo iqinile elinemingxuma enesilivere engwevu kunye ne-metallic luster. Isakhiwo sayo sinobume obucacileyo bokuhamba kwamanzi, sinemingxuma emikhulu kodwa embalwa kunye nemilo e-oval kancinci. Yinto eluhlaza yokuvelisa iimveliso zekhabhoni eziphezulu ezifana ne-electrode yamandla aphezulu kakhulu, izinto zekhabhoni ezikhethekileyo, i-carbon fiber kunye nezinto zayo ezidityanisiweyo.
Ngokwezixhobo ezahlukeneyo zemveliso, i-needle coke inokwahlulwahlulwa ibe ziintlobo ezimbini ze-needle coke. I-needle coke eveliswa nge-petroleum residue njengezinto eziluhlaza yi-oil series needle coke. I-needle coke eveliswa nge-coal tar pitch kwaye iqhekeza layo libizwa ngokuba yi-coal measure needle coke.
Izalathisi ezichaphazela umgangatho we-needle coke ziquka uxinano lokwenyani, umxholo wesalfure, umxholo we-nitrogen, umxholo oguquguqukayo, umxholo womlotha, umlinganiselo wokwandiswa kobushushu, ukhuselo lombane, uxinano oluqinileyo lokungcangcazela, njl. Ngenxa yee-coefficients ezahlukeneyo ze-index, i-needle coke inokwahlulwahlulwa ibe yi-super grade (umgangatho ophezulu), ibanga lokuqala kunye nebanga lesibini.
Umahluko wokusebenza phakathi komlinganiselo wamalahle we-needle coke kunye nomlinganiselo weoyile we-needle coke ubandakanya la manqaku alandelayo.
1. Phantsi kweemeko ezifanayo, i-electrode yegrafiti eyenziwe nge-oyile series needle coke kulula ukuyila kune-coke yeenaliti yamalahle ngokwendlela esebenza ngayo.
2. Emva kokuba kwenziwe iimveliso zegrafiti, iimveliso zegrafiti ze-oil series needle coke zinobunzima obuphezulu kancinci kunye namandla kunezo ze-coal series needle coke, okubangelwa kukwanda kwe-coal series needle coke ngexesha le-graphitization.
3. Ekusetyenzisweni kwe-graphite electrode, iimveliso ze-graphitized ezine-oil needle coke zine-coefficient ephantsi yokwandiswa kobushushu.
4. Ngokuphathelele ii-indexes ezibonakalayo nezeekhemikhali ze-graphite electrode, ukumelana okuthe ngqo kweemveliso ze-graphitized ze-oil series needle coke kuphezulu kancinci kunokweemveliso ze-coke zeenaliti ze-coke zamalahle.
5. Eyona nto ibalulekileyo kukuba i-coke yokulinganisa amalahle iyakhula kwinkqubo ye-graphitization yobushushu obuphezulu, xa ubushushu bufikelela kwi-1500-2000 ℃, ngoko ke isantya sokunyuka kobushushu kufuneka silawulwe ngokungqongqo, singabi kushushu ngokukhawuleza, kungcono ukungasebenzisi imveliso yenkqubo ye-graphitization yochungechunge, i-coke yokulinganisa amalahle ngokongeza izongezo ukulawula ukwanda kwayo, izinga lokwanda linokwehliswa. Kodwa kunzima ngakumbi ukufezekisa i-coke ye-needle esekelwe kwi-oyile.
6. Inkqubo yeoyile ene-calcium inomxholo omncinci we-coke kunye nobukhulu bengqolowa encinci, ngelixa inaliti yokulinganisa amalahle inomxholo omncinci we-coke kunye nobukhulu bengqolowa enkulu (35-40 mm), enokwanelisa imfuneko yobukhulu bengqolowa yefomyula, kodwa izisa ubunzima ekutyumzeni komsebenzisi.
7. Ngokutsho kweJapan Petroleum Coke Company, kucingelwa ukuba ukwakheka kwe-oil series needle coke kulula kunokwakheka kwe-coal series needle coke, ngoko ke kulula ukuyilawula ngexesha lenkqubo ye-coking.
Ngokwembono engasentla, i-needle coke yenkqubo yeoyile inezine eziphantsi: umxhuzulane ophantsi, amandla aphantsi, i-CTE ephantsi, ukumelana okuphantsi, ezimbini zokuqala eziphantsi kwiimveliso zegrafiti, ezimbini zokugqibela eziphantsi kwiimveliso zegrafiti zilungile. Ngokubanzi, ii-index zokusebenza ze-oil series needle coke zingcono kunezo ze-coal series needle coke, kwaye imfuno yesicelo ingaphezulu.
Okwangoku, i-graphite electrode yeyona marike iphambili yemfuno ye-needle coke, ebalelwa malunga ne-60% yesicelo siphela se-needle coke, kwaye amashishini e-electrode anemfuno ecacileyo yomgangatho we-needle coke, ngaphandle kwemfuno yomgangatho eyenzelwe wena. Izixhobo ze-anode zebhetri ye-lithium ion zineemfuno ezahlukeneyo ze-needle coke, imakethi yedijithali ephezulu ikhetha i-oyile ephekiweyo i-coke, imakethi yebhetri yamandla ixhomekeke ngakumbi kwi-coke eluhlaza engabizi kakhulu.
Imveliso ye-needle coke inomda othile wobuchwephesha, ngoko ke zimbalwa iinkampani zasekhaya. Okwangoku, abavelisi be-needle coke abaphambili baquka iShandong Jingyang, iShandong Yida, iJinzhou Petrochemical, iShandong Lianhua, iBora Biological, iWeifang Fumei New Energy, iShandong Yiwei, iSinopec Jinling Petrochemical, iMaoming Petrochemical, njl. Abavelisi abaphambili be-needle coke yokulinganisa amalahle yiBaowu Carbon Material, iBaotailong Technology, iAnshan Kaitan, iAngang Chemical, iFang Daxi Kemo, iShanxi Hongte, iHenan Kaitan, iXuyang Group, iZaozhuang Zhenxing, iNingxia Baichuan, iTangshan Dongri New Energy, iTaiyuan Shengxu, njl.
Ixesha lokuthumela: Disemba-02-2022