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Tsatanetsatane waukadaulo wa graphite elekitirodi

Zopangira: ndi zinthu ziti zomwe zimagwiritsidwa ntchito popanga kaboni?

Pakupanga kaboni, zopangira zomwe zimagwiritsidwa ntchito nthawi zambiri zimatha kugawidwa kukhala zolimba za carbon zopangira ndi zomangira ndi zolowetsa.
Zopangira zolimba za kaboni zimaphatikizapo petroleum coke, bituminous coke, coke metallurgical, anthracite, graphite zachilengedwe ndi graphite scrap, etc.
Binder ndi inpregnating wothandizira amaphatikizapo malasha phula, malasha phula, mafuta anthracene ndi kupanga utomoni, etc.
Kuphatikiza apo, zinthu zina zothandizira monga mchenga wa quartz, tinthu tating'onoting'ono ta coke ndi ufa wa coke amagwiritsidwanso ntchito popanga.
Zinthu zina zapadera za carbon ndi graphite (monga carbon fiber, activated carbon, pyrolytic carbon ndi pyrolytic graphite, glass carbon) zimapangidwa kuchokera ku zipangizo zina zapadera.

Kuwerengetsa: Kodi calcination ndi chiyani??

Kutentha kwambiri kwa zinthu zopangira kaboni popanda mpweya (1200-1500 ° C)
Njira ya chithandizo cha kutentha imatchedwa calcination.
Calcination ndiye njira yoyamba yochizira kutentha pakupanga mpweya.Calcination imayambitsa kusintha kwa kamangidwe kake ndi thupi ndi mankhwala amitundu yonse ya carbonaceous yaiwisi.
Zonse ziwiri za anthracite ndi petroleum coke zili ndi zinthu zina zomwe zimasokonekera ndipo ziyenera kuchepetsedwa.
Kutentha komwe kumapanga koloko ya bituminous coke ndi coke yachitsulo ndikokwera kwambiri (kuposa 1000 ° C), komwe kumafanana ndi kutentha kwa ng'anjo yamoto mu chomera cha kaboni.Sichingakhalenso calcinate ndipo chimangofunika kuumitsa ndi chinyezi.
Komabe, ngati bituminous coke ndi petroleum coke agwiritsidwa ntchito limodzi asanawongedwe, azitumizidwa ku calciner kuti calcining pamodzi ndi petroleum coke.
Natural graphite ndi mpweya wakuda safuna calcination.
Kupanga: Kodi mfundo yopangira extrusion ndi yotani?
Chofunikira cha extrusion process ndikuti phala likadutsa mumphuno ya mawonekedwe ena pansi pa kukakamizidwa, limapangidwa ndi pulasitiki kukhala lopanda kanthu ndi mawonekedwe ndi kukula kwake.
The extrusion akamaumba ndondomeko makamaka pulasitiki mapindikidwe ndondomeko phala.

The extrusion ndondomeko ya phala ikuchitika mu zinthu chipinda (kapena phala yamphamvu) ndi zozungulira arc nozzle.
Phala lotentha muchipinda chojambulira limayendetsedwa ndi plunger yakumbuyo.
Mpweya womwe uli mu phala umakakamizika kuthamangitsidwa mosalekeza, phala limapangidwa mosalekeza ndipo phala limapita patsogolo nthawi yomweyo.
Pamene phala likuyenda mu gawo la silinda la chipinda, phala likhoza kuonedwa ngati loyenda mokhazikika, ndipo granular wosanjikiza ndi ofanana.
Pamene phala limalowa mu gawo la nozzle extrusion ndi arc deformation, phala pafupi ndi khoma la m'kamwa limakhala ndi kukaniza kwakukulu pasadakhale, zinthuzo zimayamba kupindika, phala mkati limatulutsa liwiro losiyana, phala lamkati limakhalapo. pasadakhale, chifukwa mankhwala pamodzi kachulukidwe radial si yunifolomu, kotero mu chipika extrusion.

Kupsinjika kwamkati komwe kumachitika chifukwa cha kuthamanga kosiyanasiyana kwa zigawo zamkati ndi zakunja kumapangidwa.
Pomaliza, phala limalowa mu mzere wopindika gawo ndikutulutsidwa.
Kuphika
Kodi kuwotcha ndi chiyani? Cholinga chowotcha ndi chiyani?

Kuwotcha ndi njira yochizira kutentha yomwe zinthu zoponderezedwa zaiwisi zimatenthedwa pamlingo wina pansi pazikhalidwe zakudzipatula kwa mpweya m'malo oteteza mung'anjo.

Cholinga chothandizira ndi:
(1) Musaphatikizepo kugwedezeka Kwa zinthu zomwe zimagwiritsa ntchito phula lamakala ngati binder, pafupifupi 10% volatiles nthawi zambiri zimatulutsidwa pambuyo powotcha.
(2) Binder coking yaiwisi yaiwisi wokazinga ndi wokazinga malinga ndi zinthu zina zamakono kupanga binder coking.A coke maukonde aumbike pakati pa akaphatikiza particles kuti mwamphamvu kulumikiza akaphatikiza ndi miyeso yosiyanasiyana tinthu, kotero kuti mankhwala ali ndi zina thupi ndi mankhwala katundu. .Pansi pazikhalidwe zomwezo, kuchuluka kwa kuphika, kumakhala bwino kwambiri.Kuphika kwa sing'anga - kutentha kwa asphalt ndi pafupifupi 50%.
(3) Fomu yokhazikika ya geometric
Powotcha zinthu zaiwisi, chodabwitsa cha kufewetsa ndi kusuntha kwa binder kunachitika.Ndi kuwonjezeka kwa kutentha, makina a coking amapangidwa, kupanga mankhwala okhwima.Chifukwa chake, mawonekedwe ake sasintha pamene kutentha kumakwera.
(4) Chepetsani kukana
Pakuwotcha, chifukwa cha kuchotsedwa kwa zovunda, coking wa asphalt amapanga gululi coke, kuwonongeka ndi polymerization wa phula, ndi mapangidwe lalikulu hexagonal mpweya mphete maukonde mpweya, etc., resistivity utachepa kwambiri.About 10000 x 10-6 yaiwisi mankhwala resistivity Ω “m, pambuyo kuwotcha ndi 40-50 x 10-6 Ω” m, otchedwa makondakitala abwino.
(5) Kuchepetsanso mawu ena
Pambuyo pakuwotcha, mankhwalawa amachepa ndi pafupifupi 1% m'mimba mwake, 2% m'litali ndi 2-3% mu voliyumu.
Njira ya Imprognation: Chifukwa chiyani macerate zinthu za carbon?
The yaiwisi mankhwala pambuyo psinjika akamaumba ali otsika kwambiri porosity.
Komabe, akawotcha zinthu zaiwisi, mbali ina ya phula la malasha imawola n’kukhala mpweya n’kuthawa, ndipo mbali inayo imakokera mu bituminous coke.
Kuchuluka kwa coke yopangidwa ndi bituminous ndi kochepa kwambiri kuposa phula la malasha.Ngakhale kuti imachepa pang'ono powotcha, ma pores ambiri osakhazikika komanso ang'onoang'ono okhala ndi ma pore osiyanasiyana amapangidwabe.
Mwachitsanzo, porosity yonse ya zinthu zopangidwa ndi graphitized nthawi zambiri imakhala 25-32%, ndipo yamafuta a kaboni nthawi zambiri imakhala 16-25%.
Kukhalapo kwa ma pores ambiri kudzakhudza kwambiri thupi ndi mankhwala azinthu.
Nthawi zambiri, graphitized mankhwala ndi kuchuluka porosity, utachepa voliyumu kachulukidwe, kuchuluka resistivity, makina mphamvu, pa kutentha ena makutidwe ndi okosijeni mlingo inapita patsogolo, kukana dzimbiri kumasokonekera, mpweya ndi madzi mosavuta permeable.
Impregnation ndi njira yochepetsera porosity, kuonjezera kachulukidwe, kuonjezera mphamvu yopondereza, kuchepetsa kugonjetsedwa kwa chinthu chomalizidwa, ndikusintha thupi ndi mankhwala a mankhwala.
Graphitization: Kodi graphitization ndi chiyani?
Kodi cholinga cha graphitization ndi chiyani?
Graphitization ndi ndondomeko ya kutentha kwa kutentha kwambiri pogwiritsa ntchito zinthu zophikidwa kuti zitenthe mpaka kutentha kwambiri mu ng'anjo yotetezera ya graphitization kuti ipange gululi ya hexagonal carbon atomu ya ndege kusintha kuchokera kuzinthu zowonongeka mu danga la mbali ziwiri kuti zigwirizane mwadongosolo mu malo atatu-dimensional ndi graphite kapangidwe.

Zolinga zake ndi:
(1) Sinthani matenthedwe ndi magetsi a chinthucho.
(2) Kupititsa patsogolo kutentha kwa kutentha ndi kukhazikika kwa mankhwala.
(3) Kupititsa patsogolo mafuta ndi kuvala kukana kwa mankhwala.
(4) Chotsani zonyansa ndikuwongolera mphamvu zazinthu.

Machining: Chifukwa chiyani zinthu za kaboni zimafunikira makina?
(1) Kufunika kwa opaleshoni yapulasitiki

The wothinikizidwa mpweya mankhwala ndi kukula ndi mawonekedwe osiyana madigiri mapindikidwe ndi kugunda kuwonongeka pa Kuwotcha ndi graphitization.Panthawi imodzimodziyo, zodzaza zina zimamangirizidwa pamwamba pa zinthu za carbon.
Sichingagwiritsidwe ntchito popanda kukonza makina, kotero mankhwalawa ayenera kupangidwa ndi kukonzedwa mu mawonekedwe apadera a geometric.

(2) Kufunika kugwiritsa ntchito

Malinga ndi zofunikira za wogwiritsa ntchito pokonza.
Ngati graphite elekitirodi wa magetsi ng'anjo steelmaking ayenera chikugwirizana, ayenera kupangidwa mu dzenje ulusi pa malekezero onse a mankhwala, ndiyeno maelekitirodi awiri ayenera olumikizidwa kwa ntchito ndi wapadera ulusi olowa.

(3) Zofuna zamakono

Zogulitsa zina zimafunikira kusinthidwa kukhala mawonekedwe apadera ndi mafotokozedwe malinga ndi zosowa zaukadaulo za ogwiritsa ntchito.
Ngakhale kutsika kwapamtunda kumafunika.

Nthawi yotumiza: Dec-10-2020