Graphite electrode le nale coke

Ts'ebetso ea tlhahiso ea thepa ea carbon ke mokhoa o laoloang ka thata oa boenjiniere, tlhahiso ea electrode ea graphite, lisebelisoa tse khethehileng tsa carbon, carbon ea aluminium, lisebelisoa tse ncha tsa carbon tse phahameng li ke ke tsa arohanngoa le tšebeliso ea thepa e tala, lisebelisoa, theknoloji, tsamaiso ea lintlha tse 'nè tsa tlhahiso le thepa e amanang le eona. thekenoloji.

Lisebelisoa tse tala ke lintlha tsa bohlokoa tse khethollang litšoaneleho tsa motheo tsa lisebelisoa tsa carbon, 'me ts'ebetso ea lihlahisoa tse tala e lekanya ts'ebetso ea thepa ea carbon e entsoeng. Bakeng sa tlhahiso ea li-electrode tsa graphite tsa UHP le HP, coke ea boleng bo phahameng ea nale ke khetho ea pele, empa hape le asphalt ea boleng bo phahameng ba boleng bo phahameng, asphalt ea moemeli ea imregnating. Empa feela lisebelisoa tse tala tsa boleng bo phahameng, khaello ea lisebelisoa, thekenoloji, lintlha tsa tsamaiso le theknoloji e amanang le thepa, e boetse e sitoa ho hlahisa UHP ea boleng bo phahameng, HP graphite electrode.

Sengoliloeng sena se shebana le litšoaneleho tsa boleng bo holimo ba nale ho hlalosa maikutlo a mang a botho, bakeng sa baetsi ba nale, baetsi ba li-electrode, litsi tsa lipatlisiso tsa mahlale ho buisana.

Le hoja tlhahiso ea liindasteri ea nale coke Chaena e le morao ho feta ea likhoebo tsa linaheng tse ling, e tsoetse pele ka potlako lilemong tsa morao tjena 'me e se e qalile ho ba teng. Mabapi le palo ea kakaretso ea tlhahiso, ha e le hantle e ka fihlela tlhoko ea nale coke bakeng sa UHP le HP li-electrode tsa graphite tse hlahisoang ke likhoebo tsa khabone ea lapeng. Leha ho le joalo, ho ntse ho na le lekhalo le itseng boleng ba nale coke ha bo bapisoa le likhoebo tsa kantle ho naha. Ho feto-fetoha ha ts'ebetso ea batch ho ama tlhokahalo ea boleng bo phahameng ba nale coke tlhahiso ea boholo bo boholo ba UHP le HP graphite electrode, haholo-holo ha ho na coke ea nale ea boleng bo phahameng e ka finyellang tlhahiso ea motsoako oa graphite electrode.

Likhoebo tsa k'habone tsa kantle ho naha tse hlahisang litlhaloso tse kholo tsa UHP, HP graphite electrode hangata ke khetho ea pele ea boleng bo holimo ba nale ea peterole e le coke e ka sehloohong ea thepa e tala, likhoebo tsa Japane tsa carbon le tsona li sebelisa letoto la letoto la nale coke e le lisebelisoa tse tala, empa ke tse latelang feela φ. Tlhaloso ea 600 mm ea tlhahiso ea li-electrode tsa graphite. Hona joale, nale coke Chaena ke haholo-holo mashala letoto la nale coke. Ho hlahisoa ha li-electrode tsa boleng bo holimo tsa UHP graphite electrode ke likhoebo tsa k'habone hangata li itšetleha ka letoto la nale coke ea tsoang kantle ho naha, haholo-holo tlhahiso ea boleng bo holimo le kopanelo e tsoang kantle ho naha ea Japane ea Suishima ea letoto la lisebelisoa tsa nale coke le Brithani ea HSP letoto la oli ea nale coke joalo ka coke e tala.

Hajoale, coke ea nale e hlahisoang ke likhoebo tse fapaneng hangata e bapisoa le li-index tsa ts'ebetso ea khoebo ea coke ea kantle ho naha ka li-index tse tloaelehileng tsa ts'ebetso, joalo ka litaba tsa molora, letsoalo la 'nete, sebabole, dikahare tsa naetrojene, kabo ea boholo ba likaroloana, coefficient ea katoloso ea mocheso joalo-joalo. ho. Leha ho le joalo, ho ntse ho e-na le khaello ea limaraka tse fapaneng tsa li-need coke classification ha li bapisoa le linaha tse ling. Ka hona, tlhahiso ea nale coke colloquially hape bakeng sa "thepa e kopaneng", e ke ke ea bonts'a boemo ba boleng bo holimo ba nale coke.

Ntle le papiso e tloaelehileng ea ts'ebetso, likhoebo tsa k'habone le tsona li lokela ho ela hloko sebopeho sa nale coke, joalo ka ho hlophisoa ha "thermal expansion coefficient" (CTE), matla a likaroloana, degree ea anisotropy, data ea katoloso maemong a sa thibeloang le boemo bo thibetsoeng, le mocheso o fapaneng pakeng tsa ho atolosoa le ho fokotseha. Hobane thepa ena ea mocheso oa nale coke ke ea bohlokoa haholo ho laola ts'ebetso ea graphitization ts'ebetsong ea tlhahiso ea electrode ea graphite, ha e le hantle, tšusumetso ea thepa ea mocheso ea asphalt coke e entsoeng ka mor'a ho halika ha binder le ho kenya moemeli oa asphalt ha e khelosoe.

1. Papiso ea anisotropy ea nale coke

(A) Mohlala: φ 500 mm UHP electrode body of A domestic carbon factory;

Coke ea lisebelisoa tse tala: Kereiti e ncha ea Chemical LPC-U ea Japane, karo-karolelano: kereiti ea 100% LPC-U; Tlhahlobo: Semela sa SGL Griesheim; Matšoao a ts'ebetso a bonts'itsoe ho Lethathamo la 1.

(B) Mohlala: φ 450 mmHP 'mele oa electrode oa fektheri ea carbon ea malapeng; Coke ea lisebelisoa tse tala tsa nale: coke ea oli ea fektheri ea lehae, karo-karolelano: 100%; Tlhahlobo: Semela sa Khabone sa Shandong Bazan; Lipontšo tsa ts'ebetso li bonts'itsoe ho Lethathamo la 2.

Joalokaha ho ka bonoa papisong ea Lethathamo la 1 le Lethathamo la 2, lPC-U grade ea nale coke ea mehato e mecha ea letsatsi le letsatsi ea mashala ea lik'hemik'hale e na le anisotropy e kholo ea thepa ea mocheso, moo anisotropy ea CTE e ka fihlang 3.61 ~ 4.55, le anisotropy of resistivity e boetse e kholo, e fihla ho 2.06 ~ 2.25. Ntle le matla a flexural a lehae la petroleum nale coke e betere ho feta ea lik'hemik'hale tse ncha tsa letsatsi le letsatsi tsa LPC-U tsa sehlopha sa mashala a lekanya nale coke. Boleng ba anisotropy bo tlase haholo ho feta ba Daily chemical LPC-U mashala a lekanya nale coke.

Ultra matla a phahameng a graphite electrode tlhahiso ea anisotropic degree performance analysis ke khakanyo ea nale coke e tala boleng ba thepa kapa e seng mokhoa oa bohlokoa oa ho hlahloba, boholo ba tekanyo ea anisotropy, ha e le hantle, e boetse e na le tšusumetso e itseng ts'ebetsong ea tlhahiso ea electrode, tekanyo ea anisotropy ea motlakase e ts'oarehang haholo ho feta tekanyo ea anisotropy ea matla a tloaelehileng a eleketrode e nyane e ntle.

Hona joale, tlhahiso ea coke ea nale ea mashala Chaena e kholo haholo ho feta ea petroleum needle coke. Ka lebaka la theko e phahameng ea thepa e tala le theko ea lik'hamphani tsa k'habone, ho thata ho sebelisa 100% ea nale coke ea lehae ha ho etsoa electrode ea UHP, ha u ntse u eketsa karolo e itseng ea coke ea petroleum le phofo ea graphite ho hlahisa electrode. Ka hona, ho thata ho lekola anisotropy ea coke ea nale ea lapeng.

2. Linear le thepa ea volumetric ea nale coke

Ts'ebetso ea phetoho ea linear le volumetric ea nale coke e bonahala haholo ts'ebetsong ea graphite e hlahisoang ke electrode. Ka phetoho ea mocheso, nale coke tla kena linear le bophahamo ba modumo katoloso le konteraka nakong tshebetso graphite thulaganyou e futhumatsang, e ama ka ho toba linear le volumetric phetoho ea eleketrode halikiloeng billet tshebetso graphite. Sena ha se tšoane bakeng sa ts'ebeliso ea thepa e fapaneng ea coke e tala, limaraka tse fapaneng tsa liphetoho tsa nale coke. Ho feta moo, mefuta e fapaneng ea mocheso oa mela le molumo oa liphetoho tsa mephato e fapaneng ea nale coke le calcined petroleum coke le tsona li fapane. Ke feela ka ho tseba tšobotsi ena ea coke e tala re ka laolang hantle le ho ntlafatsa tlhahiso ea tatellano ea lik'hemik'hale tsa graphite. Sena se bonahala ka ho khetheha letotong la graphitization process.

Letlapa la 3 le bonts'a liphetoho tsa linear le volume le mefuta ea mocheso ea likarolo tse tharo tsa petroleum needle coke e hlahisoang ke Conocophilips UK. Katoloso ea linear e etsahala pele ha nale coke ea oli e qala ho futhumala, empa mocheso qalong ea ho honyela ha linear hangata o lags ka mor'a mocheso o phahameng oa calcination. Ho tloha ho 1525 ℃ ho isa ho 1725 ℃, ho atolosoa ha mela ho qala, 'me mocheso o fapaneng oa moeli o moqotetsane, ke 200 ℃ feela. Thempereichara ea lekhalo lohle la khoele ea coke e tloaelehileng e liehang ea petroleum e kholoanyane ho feta ea nale coke, 'me coke ea nale ea mashala e pakeng tsa tse peli, e kholoanyane ho feta coke ea nale ea oli. Liphetho tsa liteko tsa Osaka Industrial Technology Test Institute ea Japane li bonts'a hore ts'ebetso e mpe le ho feta ea coke, mocheso o moholo oa ho fokotseha ha mohala, ho fihla ho 500 ~ 600 ℃ mocheso oa mocheso o tlase, 'me ho qala ha mocheso oa mohala o tlase. , ka 1150 ~ 1200 ℃ qala ho etsahala line shrinkage, e leng e boetse e le litšobotsi tsa tloaelehileng lieha coke petroleum.

Ha thepa ea mocheso e betere 'me ho na le anisotropy e kholo ea nale coke, ho fokotsa mocheso oa ho honyela ha mela. Ba bang ba boleng bo phahameng ba nale coke feela 100 ~ 150 ℃ linear contraction mocheso mefuta e fapaneng. Ho molemo haholo bakeng sa lik'hamphani tsa k'habone ho tataisa tlhahiso ea ts'ebetso ea graphitization kamora ho utloisisa litšoaneleho tsa katoloso ea mela, ho koenya le ho atolosoa ha lisebelisoa tse fapaneng tsa coke, tse ka qobang lihlahisoa tse ling tsa boleng bo sa hlokahaleng tse bakoang ke ho sebelisa mokhoa oa setso oa boiphihlelo.

3 sephetho

Tseba litšobotsi tse fapa-fapaneng tsa lisebelisoa tse tala, khetha lisebelisoa tse loketseng tse bapisang, motsoako o motle oa theknoloji, 'me tsamaiso ea khoebo ke ea saense le e utloahalang, letoto lena la tsamaiso eohle ea tsamaiso e laoloang ka thata ebile e tsitsitse, ho ka boleloa hore e na le motheo oa ho hlahisa lihlahisoa tse phahameng- boleng bo phahameng haholo ba matla, elektrode e phahameng ea graphite.