I-Needle coke uhlobo olusezingeni eliphezulu oluthuthukiswe ngamandla ezintweni zekhabhoni. Ukubukeka kwayo kuyi-solid enesimbobo enokukhanya kwesiliva okumpunga kanye nensimbi. Isakhiwo sayo sinokuthungwa okusobala kokugeleza, inezimbobo ezinkulu kodwa ezimbalwa kanye nesimo se-oval kancane. Yizinto zokusetshenziswa zokukhiqiza imikhiqizo yekhabhoni ephezulu njenge-electrode yamandla ephezulu kakhulu, izinto zekhabhoni ezikhethekile, i-carbon fiber kanye nezinto zayo ezihlanganisiwe.
Ngokwezinto zokukhiqiza ezahlukene, i-needle coke ingahlukaniswa ibe uchungechunge lwamafutha kanye nochungechunge lwamalahle izinhlobo ezimbili ze-needle coke. I-needle coke ekhiqizwa ngensalela kaphethiloli njengezinto zokusetshenziswa iyi-needle coke yochungechunge lwamafutha. I-needle coke elinganisa i-needle coke ekhiqizwa nge-coal tar pitch kanye nengxenye yayo ibizwa ngokuthi i-coal measure needle coke.
Izinkomba ezithinta ikhwalithi ye-needle coke zifaka phakathi ubuningi beqiniso, okuqukethwe kwe-sulfur, okuqukethwe kwe-nitrogen, okuqukethwe okuguquguqukayo, okuqukethwe komlotha, ubuningi bokunwetshwa kokushisa, ukumelana kagesi, ubuningi bokudlidliza, njll. Ngenxa yama-coefficients ahlukene e-index, i-needle coke ingahlukaniswa ibe yi-super grade (i-superior grade), ibanga lokuqala kanye nebanga lesibili.
Umehluko wokusebenza phakathi kwe-coke yenaliti yokulinganisa amalahle kanye ne-coke yenaliti yokulinganisa uwoyela uhlanganisa amaphuzu alandelayo.
1. Ngaphansi kwezimo ezifanayo, i-electrode ye-graphite eyenziwe nge-coke yenaliti yochungechunge lwamafutha kulula ukwakheka kune-coke yenaliti yochungechunge lwamalahle ngokusebenza kwayo.
2. Ngemva kokwenziwa kwemikhiqizo ye-graphite, imikhiqizo ye-graphitized ye-oil series needle coke inobukhulu namandla aphezulu kancane kunaleyo ye-coke yee-coal series needle coke, okubangelwa ukwanda kwe-coke yee-coal series needle coke ngesikhathi se-graphitization.
3. Ekusetshenzisweni okuqondile kwe-graphite electrode, imikhiqizo ye-graphitized ene-oil needle coke ine-coefficient ephansi yokwanda kokushisa.
4. Ngokuphathelene nezinkomba zomzimba nezamakhemikhali ze-graphite electrode, ukumelana okuqondile kwemikhiqizo ye-graphitized ye-oil series needle coke kuphakeme kancane kunokwemikhiqizo ye-needle coke ye-coke yamalahle.
5. Into ebaluleke kakhulu ukuthi i-coke yenaliti yokulinganisa amalahle iyanda enkambisweni ye-graphitization yokushisa okuphezulu, lapho izinga lokushisa lifinyelela ku-1500-2000 ℃, ngakho-ke isivinini sokukhuphuka kwezinga lokushisa kufanele silawulwe ngokuqinile, hhayi ukufudumala okusheshayo, kungcono ukungasebenzisi ukukhiqizwa kwenqubo ye-graphitization yochungechunge, i-coke yenaliti yokulinganisa amalahle ngokungeza izithasiselo ukulawula ukwanda kwayo, izinga lokunwebeka lingancishiswa. Kodwa kunzima kakhulu ukufeza i-coke yenaliti esekelwe kumafutha.
6. Uhlelo lwamafutha olune-calcium lunokuqukethwe okuncane kwe-coke kanye nosayizi wezinhlamvu ezincane, kuyilapho inaliti yokulinganisa amalahle inokuqukethwe okuncane kwe-coke kanye nosayizi wezinhlamvu ezinkulu (35-40 mm), okungahlangabezana nesidingo sosayizi wezinhlamvu zefomula, kodwa kuletha ubunzima ekucindezelweni komsebenzisi.
7. Ngokusho kweNkampani iJapan Petroleum Coke, kubhekwa ukuthi ukwakheka kwe-needle coke yochungechunge lwamafutha kulula kunokwakheka kwe-needle coke yochungechunge lwamalahle, ngakho-ke kulula ukuyilawula ngesikhathi senqubo yokuyicola.
Ngokombono ongenhla, i-needle coke yesistimu kawoyela inezinhlobo ezine eziphansi: amandla adonsela phansi aphansi, amandla aphansi, i-CTE ephansi, ukumelana okuphansi okuqondile, ezimbili zokuqala eziphansi emikhiqizweni ye-graphite, ezimbili zokugcina eziphansi emikhiqizweni ye-graphite ziyathandeka. Ngokuvamile, izinkomba zokusebenza ze-needle coke yochungechunge kawoyela zingcono kuneze-needle coke yochungechunge lwamalahle, futhi isidingo sokusetshenziswa sikhulu.
Njengamanje, i-graphite electrode iyimakethe eyinhloko yesidingo se-needle coke, ebiza cishe u-60% wokusetshenziswa okuphelele kwe-needle coke, futhi amabhizinisi e-electrode anesidingo esicacile sekhwalithi ye-needle coke, ngaphandle kwesidingo sekhwalithi esenziwe ngokwezifiso. Izinto ze-anode zebhethri le-lithium ion zinesidingo esihlukahlukene se-needle coke, imakethe yedijithali ephezulu ikhetha i-coke ephekiwe ngamafutha, imakethe yebhethri lamandla incike kakhulu ku-coke eluhlaza engabizi kakhulu.
Ukukhiqizwa kwe-needle coke kunomkhawulo othile wezobuchwepheshe, ngakho-ke zimbalwa izinkampani zasekhaya. Njengamanje, abakhiqizi be-needle coke abaphambili bochungechunge lwamafutha asekhaya bahlanganisa 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, njll. Abakhiqizi abaphambili be-needle coke yokulinganisa amalahle yi-Baowu Carbon Material, i-Baotailong Technology, i-Anshan Kaitan, i-Angang Chemical, i-Fang Daxi Kemo, i-Shanxi Hongte, i-Henan Kaitan, i-Xuyang Group, i-Zaozhuang Zhenxing, i-Ningxia Baichuan, i-Tangshan Dongri New Energy, i-Taiyuan Shengxu, njll.
Isikhathi sokuthunyelwe: Disemba-02-2022