Raw zvinhu uye nzira yekugadzira yegraphite electrode
Graphite electrode yakakwira tembiricha inodzivirira graphite conductive zvinhu inogadzirwa nepetroleum knead, tsono coke seyakaunganidzwa uye marasha bhitumeni sebinder, iyo inogadzirwa kuburikidza neakatevedzana maitiro senge kukanya, kuumba, kugocha, kupinza, graphitization uye mechanic processing. zvinhu.
Iyo graphite electrode chinhu chakakosha chepamusoro-tembiricha conductive zvinhu zvemagetsi simbi. Iyo graphite electrode inoshandiswa kuisa simba remagetsi kuchoto chemagetsi, uye tembiricha yakakwira inogadzirwa nearc pakati pekuguma kwe electrode uye kubhadharisa kunoshandiswa senzvimbo yekupisa kunyungudutsa mutero wekugadzira simbi. Mamwe mavhiri ematombo anonyungudutsa zvinhu zvakaita seyero phosphorous, silicon yeindasitiri, uye mabrasives anoshandisawo magraphite electrodes sezvinhu zvinoitisa. Iyo yakanakisa uye yakakosha yemuviri uye yemakemikari zvimiro zvegraphite electrode zvakare inoshandiswa zvakanyanya mune mamwe maindasitiri zvikamu.
Izvo zvigadzirwa zvekugadzira magraphite electrode petroleum coke, tsono coke uye marasha tar pitch.
Petroleum coke chigadzirwa chakasimba chinopfuta chinowanikwa nekubikira marasha akasara uye petroleum pitch. Rudzi irworwo dema uye porous, chinhu chikuru kabhoni, uye madota akadzika kwazvo, kazhinji ari pasi pe0.5%. Petroleum coke ndeyekirasi nyore nyore graphitized kabhoni. Petroleum coke ine huwandu hwakawanda hwekushandisa mumakemikari uye metallurgical industries. Ndiyo huru yezvigadzirwa zvekugadzira zvigadzirwa zve graphite uye kabhoni zvigadzirwa zve electrolytic aluminium.
Iyo petroleum coke inogona kukamurwa kuita mhando mbiri: mbishi coke uye calcined coke zvinoenderana nekupisa kwekushisa kwekushisa. Iyo yaimbova petroleum coke yakawanikwa nekunonoka coking ine huwandu hukuru hwemhepo, uye simba remagetsi rakaderera. Iyo calcined coke inowanikwa nekuverengera coke mbishi. Mazhinji ekunatsa muChina anongogadzira coke chete, uye calcination mashandiro anowanzoitwa muzvirimwa zvekabhoni.
Petroleum coke inogona kupatsanurwa kuita sarufa coke yakakwira (ine inopfuura 1.5% sarufa), yepakati sulfur coke (ine 0.5% -1.5% sulfur), uye yakaderera sulfur coke (ine isingasviki 0.5% sulfur). Kugadzirwa kwemagraphite electrodes uye zvimwe zvigadzirwa zve graphite zvekugadzira zvinowanzo gadzirwa uchishandisa yakaderera sulfur coke.
Tsono coke imhando yemhando yepamusoro coke ine yakajeka fibrous mameseji, yakaderera kwazvo yekupisa yekuwedzera coefficient uye nyore graphitization. Kana iyo coke yatyoka, inogona kupatsanurwa kuita mitsetse yakatetepa zvinoenderana nemanyorerwo (iyo chikamu chiyero chinowanzo pfuura 1.75). An anisotropic fibrous structure inogona kuonekwa pasi pe polarizing microscope, uye naizvozvo inonzi inonzi tsono coke.
Iyo anisotropy ye physico-mechanical zvimiro zvetsono coke zviri pachena. Iyo ine yakanaka yemagetsi uye yekupisa conductivity inopindirana neiyo refu axis kutungamira kwechikamu, uye iyo coefficient yekuwedzera kwemafuta yakaderera. Kana extrusion kuumbwa, iyo yakareba axis yezvimedu zvakawanda inorongwa mu extrusion direction. Naizvozvo, tsono coke ndiyo kiyi mbishi zvinhu zvekugadzira yakakwirira-simba kana Ultra-yakakwirira-simba graphite electrodes. Iyo graphite electrode inogadzirwa ine yakaderera resistivity, diki yekupisa yekuwedzera coefficient uye yakanaka yekupisa kutyisa kuramba.
Tsono coke yakakamurwa kuita mafuta-based tsono coke inogadzirwa kubva mupetroleum yasara uye marasha-based tsono coke inogadzirwa kubva kunatswa marasha pitch zvinhu.
Coal tar ndechimwe chezvigadzirwa zvikuru zvemarasha tar deep processing. Musanganiswa wemahydrocarboni akasiyana-siyana, dema pakupisa kwepamusoro, semi-yakasimba kana yakasimba pakupisa kwepamusoro, isina kunyungudika yakagadziriswa, yakanyoroveswa mushure mekupisa, uye yobva yanyungudutswa, ine density ye1.25-1.35 g/cm3. Zvinoenderana nekunyorova kwayo, yakakamurwa kuita yakaderera tembiricha, yepakati tembiricha uye yakakwirira tembiricha asphalt. Iyo yepakati tembiricha yeasphalt goho i54-56% yemarasha tara. Kuumbwa kwemarasha tara kwakaomarara zvakanyanya, izvo zvine chekuita nemidziyo yemarasha tar uye zviri mukati meheteroatoms, uye zvakare inobatwa neiyo coking process system uye marasha tar kugadzirisa mamiriro. Pane zviratidzo zvakawanda zvekuratidza tara yemarasha, senge bitumen softening point, toluene insolubles (TI), quinoline insolubles (QI), coking values, uye marasha pitch rheology.
Tara yemarasha inoshandiswa sebhainda uye isina pamuviri muindasitiri yekabhoni, uye kuita kwayo kune simba guru pamaitiro ekugadzira uye kunaka kwechigadzirwa chezvigadzirwa zvekabhoni. Iyo binder asphalt inowanzoshandisa yepakati-tembiricha kana yepakati-tembiricha yakagadziridzwa asphalt ine ine mwero inopfava poindi, yakakwirira coking kukosha, uye yakakwirira β resin. Iyo impregnating agent ndeye yepakati tembiricha asphalt ine yakaderera kupfava poindi, yakaderera QI, uye yakanaka rheological properties.
Nguva yekutumira: Sep-23-2019