Needle coke ndi mtundu wapamwamba kwambiri wopangidwa mwamphamvu mu zinthu za kaboni. Maonekedwe ake ndi olimba okhala ndi mapokoso okhala ndi imvi yasiliva komanso chitsulo chowala. Kapangidwe kake kali ndi mawonekedwe omveka bwino, okhala ndi mabowo akuluakulu koma ochepa komanso mawonekedwe ozungulira pang'ono. Ndi chinthu chopangira zinthu zapamwamba za kaboni monga ma electrode amphamvu kwambiri, zinthu zapadera za kaboni, ulusi wa kaboni ndi zinthu zake zophatikizika.
Malinga ndi zipangizo zosiyanasiyana zopangira, singano coke ingagawidwe m'magulu awiri a singano coke m'magulu a mafuta ndi malasha. Singano coke yopangidwa ndi mafuta otsalira ngati zopangira ndi singano coke m'magulu a mafuta. Singano coke yopangidwa ndi malasha yopangidwa kuchokera ku phula la malasha ndipo gawo lake limatchedwa singano coke yoyezera malasha.
Zizindikiro zomwe zimakhudza ubwino wa needle coke ndi monga kuchuluka kwenikweni, kuchuluka kwa sulfure, kuchuluka kwa nayitrogeni, kuchuluka kwa volatility, kuchuluka kwa phulusa, kuchuluka kwa kutentha, kukana kwamagetsi, kuchuluka kwa kugwedezeka kolimba, ndi zina zotero. Chifukwa cha ma coefficients osiyanasiyana a index, needle coke ikhoza kugawidwa m'magulu awiri: super grade (superior grade), grade yoyamba ndi grade yachiwiri.
Kusiyana kwa magwiridwe antchito pakati pa singano ya coke yoyezera malasha ndi singano ya coke yoyezera mafuta kumaphatikizapo mfundo zotsatirazi.
1. Pansi pa mikhalidwe yomweyi, ma electrode a graphite opangidwa ndi mafuta a needle coke ndi osavuta kupanga kuposa ma coke a needle coke a malasha pankhani ya magwiridwe antchito.
2. Pambuyo popangidwa zinthu za graphite, zinthu zopangidwa ndi graphitized za mafuta a needle coke zimakhala ndi mphamvu komanso mphamvu zambiri kuposa za malasha a needle coke, zomwe zimachitika chifukwa cha kukula kwa malasha a needle coke panthawi ya graphitization.
3. Pogwiritsa ntchito ma electrode a graphite, zinthu zopangidwa ndi graphitized zokhala ndi coke ya singano yamafuta zimakhala ndi coefficient yotsika ya kutentha.
4. Ponena za zizindikiro zakuthupi ndi zamankhwala za graphite electrode, kukana kwapadera kwa zinthu zopangidwa ndi graphitized za mafuta a needle coke ndi kwakukulu pang'ono kuposa kwa zinthu zopangidwa ndi malasha a needle coke.
5. Chofunika kwambiri ndichakuti coke yoyezera malasha imakula pamene graphitization ya kutentha kwambiri ikufika pa 1500-2000 ℃, kotero liwiro la kukwera kwa kutentha liyenera kulamulidwa mosamala, osati kutentha mofulumira, ndi bwino kusagwiritsa ntchito njira yopangira graphitization, coke yoyezera malasha powonjezera zowonjezera kuti ziwongolere kukula kwake, kuchuluka kwa kukula kungachepe. Koma zimakhala zovuta kwambiri kupeza coke yochokera ku mafuta.
6. Dongosolo la mafuta opangidwa ndi calcium lili ndi kuchuluka kwa coke kochepa komanso kukula kwa tirigu wochepa, pomwe singano yoyezera malasha ili ndi kuchuluka kwa coke kochepa komanso tirigu wokulirapo (35-40 mm), zomwe zingakwaniritse zofunikira za kukula kwa tirigu wa fomula, koma zimapangitsa kuti wogwiritsa ntchito avutike kuphwanya.
7. Malinga ndi Japan Petroleum Coke Company, zimaganiziridwa kuti kapangidwe ka mafuta opangidwa ndi needle coke ndi kosavuta kuposa ka malasha, kotero ndikosavuta kuwongolera panthawi yokonza.
Kuchokera pamalingaliro omwe ali pamwambapa, needle coke ya dongosolo la mafuta ili ndi zinayi zotsika: mphamvu yokoka yochepa, mphamvu yochepa, CTE yochepa, kukana kochepa, ziwiri zoyambirira zotsika pa zinthu za graphite, ziwiri zomaliza zotsika pa zinthu za graphite ndizabwino. Nthawi zambiri, ma index a magwiridwe antchito a needle coke yamafuta ndi abwino kuposa a needle coke yamalasha, ndipo kufunikira kwa ntchitoyo ndi kwakukulu.
Pakadali pano, graphite electrode ndiye msika waukulu wofunikira wa needle coke, womwe umapanga pafupifupi 60% ya ntchito yonse ya needle coke, ndipo makampani a electrode ali ndi kufunikira komveka bwino kwa needle coke, popanda kufunikira kwapadera kwa khalidwe. Zipangizo za anode za batri ya lithiamu ion zimafuna kwambiri needle coke, msika wapamwamba wa digito umakonda coke yophikidwa ndi mafuta, msika wa batri yamagetsi umadalira kwambiri coke yaiwisi yotsika mtengo.
Kupanga kwa needle coke kuli ndi malire enaake aukadaulo, kotero pali mabizinesi ochepa am'nyumba. Pakadali pano, opanga ma needle coke opangidwa ndi mafuta am'nyumba ndi Shandong Jingyang, Shandong Yida, Jinzhou Petrochemical, Shandong Lianhua, Bora Biological, Weifang Fumei New Energy, Shandong Yiwei, Sinopec Jinling Petrochemical, Maoming Petrochemical, ndi zina zotero. Opanga ma needle coke oyezera malasha ndi Baowu Carbon Material, Baotailong Technology, Anshan Kaitan, Angang Chemical, Fang Daxi Kemo, Shanxi Hongte, Henan Kaitan, Xuyang Group, Zaozhuang Zhenxing, Ningxia Baichuan, Tangshan Dongri New Energy, Taiyuan Shengxu, ndi zina zotero.
Nthawi yotumizira: Disembala-02-2022