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 oyenda, 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 zinthu zosiyanasiyana zopangira, singano ya singano ingagawidwe m'magulu awiri: singano ya singano ya mafuta ndi singano ya malasha. Singano ya singano yopangidwa kuchokera ku mafuta otsala ndi singano ya singano ya mafuta. Singano ya singano yopangidwa kuchokera ku phula la malasha ndipo gawo lake ndi singano ya singano ya malasha.
Zizindikiro zomwe zimakhudza ubwino wa needle coke ndi monga kuchuluka kwenikweni, kuchuluka kwa sulfure, kuchuluka kwa nayitrogeni, zinthu zosinthasintha, kuchuluka kwa phulusa, kuchuluka kwa kutentha, kukana, kuchuluka kwa kugwedezeka, ndi zina zotero. Chifukwa cha kusiyana kwa index coefficient yeniyeni, needle coke ikhoza kugawidwa m'magulu awiri: super grade (kalasi yabwino kwambiri), kalasi yoyamba ndi kalasi yachiwiri.
Kusiyana kwa magwiridwe antchito pakati pa coke ya singano ya malasha ndi mafuta kumaphatikizapo mfundo zotsatirazi.
1. Pansi pa mikhalidwe yomweyi, electrode ya graphite yopangidwa ndi mafuta a needle coke ndi yosavuta kupanga kuposa coke ya needle coke ya malasha.
2. Pambuyo popanga zinthu za graphite, kuchuluka ndi mphamvu za zinthu zopangidwa ndi graphitized za needle coke ya mafuta zimakhala zokwera pang'ono kuposa za needle coke ya malasha, zomwe zimachitika chifukwa cha kukula kwa needle coke ya malasha panthawi ya graphitization.
3. Pogwiritsa ntchito ma electrode a graphite, chinthu chopangidwa ndi graphite cha coke ya singano yamafuta chimakhala ndi coefficient yotsika ya kukula kwa kutentha.
4. Ponena za zizindikiro zakuthupi ndi zamankhwala za graphite electrode, kukana kwapadera kwa mankhwala opangidwa ndi graphitized a mafuta a needle coke ndi kwakukulu pang'ono kuposa kwa mankhwala opangidwa ndi singano ya malasha.
5. Chofunika kwambiri ndichakuti coke ya singano yoyezera malasha imakula kutentha kukafika pa 1500-2000 ℃ mu ndondomeko ya graphitization ya kutentha kwakukulu, kotero kuchuluka kwa kutentha kuyenera kulamulidwa mosamala, osati kukwera kwa kutentha mwachangu, ndibwino kuti musagwiritse ntchito njira yopangira graphitization, muyeso wa singano yoyezera malasha powonjezera zowonjezera kuti muwongolere kukula kwake, kuchuluka kwa kukula kumatha kuchepetsedwa. Koma zimakhala zovuta kwambiri kupeza coke ya singano ya mafuta.
6. Singano ya mafuta yokhala ndi calcium ili ndi singano yaying'ono komanso tinthu tating'onoting'ono, pomwe singano ya malasha ili ndi tinthu tating'onoting'ono tochepa komanso tinthu tating'onoting'ono tating'onoting'ono (35 — 40 mm), zomwe zingakwaniritse zofunikira za singano ya formula, koma zimabweretsa zovuta kwa ogwiritsa ntchito.
7. Malinga ndi kuyambitsidwa kwa Japan Petroleum Coke Company, amakhulupirira kuti kapangidwe ka mafuta a needle coke ndi kosavuta kuposa coke ya needle coke ya malasha, kotero ndikosavuta kuwongolera nthawi yophika ndi kutentha.
Kuchokera pamwambapa, mafuta a singano coke ali ndi zinthu zinayi zotsika: mphamvu yokoka yotsika, mphamvu yochepa, CTE yochepa, kukana kochepa, zinthu ziwiri zoyambirira zotsika mpaka graphite, zinthu ziwiri zomaliza zotsika mpaka graphite ndizabwino. Ponseponse, ma index a magwiridwe antchito a mafuta a singano coke ndi abwino kuposa malasha a singano coke, ndipo kufunika kwa ntchito ndi kwakukulu.
Pakadali pano, graphite electrode ndiye msika waukulu wofunikira wa needle coke, womwe umagwiritsa ntchito pafupifupi 60% ya ntchito yonse ya needle coke, pomwe makampani opanga ma electrode ali ndi kufunikira kwabwino kwa needle coke, popanda kufunikira kwapadera kwa khalidwe. Kufunika kwa needle coke kwa zinthu za lithiamu ion batire ya anode ndi kosiyanasiyana, msika wapamwamba wa digito umakonda mafuta ophika coke, msika wamagetsi umadalira kwambiri coke yokhala ndi magwiridwe antchito okwera mtengo.
Kupanga kwa singano coke kuli ndi malire enaake aukadaulo, kotero mabizinesi am'nyumba ndi osowa kwambiri. Pakadali pano, mabizinesi akuluakulu opanga mafuta a singano coke ndi awa: Weifang Fumei new Energy, Shandong Jingyang, Shandong Yida, Jinzhou Petrochemical, Shandong Lianhua, Bora Biological, Weifang Fumei new energy, Shandong Yiwei, Sinopec jinling Petrochemical, Maoming petrochemical, ndi zina zotero. Makampani opanga ma singano coke a Baowu carbon material, Baotailong technology, Anshan open carbon, Anshan Chemical, Fang Daxi ke Mo, Shanxi Macro, Henan open carbon, Xuyang Group, Zaozhuang revitalization, Ningxia Baichuan, Tangshan Dongri new energy, Taiyuan Shengxu ndi zina zotero.
Nthawi yotumizira: Okutobala-19-2021