Needle coke ndi mtundu wapamwamba kwambiri wopangidwa mwamphamvu mu zida za kaboni. Maonekedwe ake ndi olimba porous ndi siliva imvi ndi zitsulo luster. Kapangidwe kake kamakhala ndi mawonekedwe owoneka bwino, okhala ndi mabowo akulu koma ochepa komanso mawonekedwe ozungulira pang'ono. Ndizopangira zopangira zinthu zopangira kaboni wapamwamba kwambiri monga ma elekitirodi amphamvu kwambiri, zinthu zapadera za carbon, kaboni fiber ndi zinthu zake zophatikizika.
Malinga ndi zida zosiyanasiyana, singano ya singano imatha kugawidwa kukhala coke ya singano yamafuta ndi coke ya singano yamakala. Needle coke yopangidwa kuchokera ku petroleum residues ndi mafuta a singano coke. Sino coke yopangidwa kuchokera ku malasha phula phula ndipo gawo lake ndi malasha angapo singano coke.
Ma index omwe amakhudza ubwino wa singano ya singano akuphatikizapo kachulukidwe weniweni, sulfure, zomwe zili ndi nayitrogeni, zinthu zosakhazikika, phulusa, kuchuluka kwa kutentha, resistivity, kugwedeza kwamphamvu, ndi zina zotero. giredi yapamwamba (giredi yabwino kwambiri), giredi yoyamba ndi yachiwiri.
Kusiyana kwa magwiridwe antchito pakati pa malasha ndi mafuta a singano coke kumaphatikizapo mfundo zotsatirazi.
1. Pazifukwa zomwezo, electrode ya graphite yopangidwa ndi mafuta a singano coke ndiyosavuta kupanga kusiyana ndi coke ya singano ya malasha.
2. Pambuyo popanga mankhwala a graphite, kachulukidwe ndi mphamvu za graphitized mankhwala a mafuta-mndandanda singano coke ndi apamwamba pang'ono kuposa malasha-mndandanda singano coke, amene amayamba chifukwa cha kukula kwa malasha-mndandanda singano coke pa graphitization.
3. Pogwiritsa ntchito ma elekitirodi a graphite, chopangidwa ndi graphite cha mafuta a singano coke chimakhala ndi coefficient yotsika yakukulitsa matenthedwe.
4. Pankhani ya zisonyezo zakuthupi ndi zamankhwala za elekitirodi ya graphite, kukana kwenikweni kwa graphitized mankhwala a mafuta a singano coke ndikokwerako pang'ono kuposa mankhwala a singano a malasha.
5. Chofunika kwambiri ndi chakuti coke coke singano imakula pamene kutentha kufika 1500-2000 ℃ panthawi ya kutentha kwa graphitization, kotero kutentha kwa kutentha kuyenera kuyendetsedwa mosamalitsa, osati kutentha kwachangu, ndibwino kuti musagwiritse ntchito mndandanda graphitization ndondomeko kupanga, malasha muyeso singano coke powonjezera zina kulamulira kukula kwake, mlingo kukula akhoza kuchepetsedwa. Koma ndizovuta kwambiri kukwaniritsa singano ya mafuta coke.
6. Calcined mafuta singano coke ali kwambiri yaing'ono coke ndi zabwino tinthu kukula, pamene malasha singano coke ali zochepa okhutira ndi lalikulu tinthu kukula (35 — 40 mm), amene angakwaniritse zofunika chilinganizo tinthu kukula, koma zimabweretsa mavuto kwa owerenga.
7. Malingana ndi kukhazikitsidwa kwa Japan Petroleum Coke Company, amakhulupirira kuti kapangidwe ka singano ya mafuta coke ndi yosavuta kuposa coke singano ya malasha, choncho n'zosavuta kulamulira nthawi yophika ndi yotentha.
Kuchokera pamwambapa, mafuta a singano a coke ali ndi anayi otsika: mphamvu yokoka yabodza yotsika, mphamvu yochepa, CTE yochepa, kukana kwapadera, awiri oyambirira otsika ku mankhwala a graphite, awiri otsiriza otsika ku graphite ndi abwino. Ponseponse, mayendedwe amafuta angapo a singano ndi abwino kuposa singano yamalasha, ndipo kufunikira kwa ntchito nakonso ndikochuluka.
Pakadali pano, ma elekitirodi a graphite ndiye msika wofunikira kwambiri wa singano, womwe umawerengera pafupifupi 60% ya kuchuluka kwa singano ya singano, pomwe mabizinesi a electrode ali ndi kufunikira komveka bwino kwa singano, popanda kufunidwa kwamunthu payekha. Kufunika kwa singano kwa lithiamu ion battery anode material ndikosiyana kwambiri, msika wa digito wapamwamba kwambiri umakonda mafuta ophika mafuta, msika wa batri wamagetsi umadalira kwambiri coke ndi ntchito yokwera mtengo.
Kupanga singano kumakhala ndi luso linalake, kotero mabizinesi apakhomo ndi osowa. Pakali pano, mabizinesi zoweta zikuluzikulu kupanga mafuta singano coke monga: Weifang Fumei latsopano Energy, Shandong Jingyang, Shandong Yida, Jinzhou Petrochemical, Shandong Lianhua, Bora Biological, Weifang Fumei mphamvu zatsopano, Shandong Yiwei, Sinopec jinling Petrochemical, Maoming petrochemical, etc. . Malasha mndandanda singano coke waukulu mabizinesi kupanga Baowu carbon zakuthupi, Baotailong luso, Anshan lotseguka mpweya, Anshan Chemical, Fang Daxi ke Mo, Shanxi Macro, Henan lotseguka mpweya, Xuyang Gulu, Zaozhuang revitalization, Ningxia Baichuan, Tangshan Dongri mphamvu zatsopano, Taiyuan Shengxu ndi zina zotero.
Nthawi yotumiza: Oct-19-2021