Cov ntaub ntawv raw rau graphite ntau lawm

Roj av coke yog cov khoom sib txuas ua ke cov khoom tau los ntawm cuming petroleum cov khoom seem thiab roj av. Cov xim yog xim dub thiab ntxig, lub ntsiab yog carbon, thiab cov hmoov tshauv yog tsawg heev, feem ntau hauv qab {{0%. Roj Cokeum Coke belongs rau cov qeb ntawm yooj yim graphitized carbon. Roj av coke yog dav siv hauv tshuaj, metallurgical thiab lwm yam kev lag luam. Nws yog cov khoom tseem ceeb rau cov khoom lag luam cuav thiab cov roj carbon rau electrolytic txhuas.

Roj Cokeum tuaj yeem muab faib ua cov ncuav Coke thiab pleev kom zoo raws li kev kho cua sov. Tus qub yog cov roj av coke tau txais los ntawm kev ua coking ncua, uas muaj ib qho nyiaj ntau ntawm cov tsis muaj zog thiab muaj lub zog tshuab zog tsawg. Cawv Coke yog tau los ntawm calcining ntsuab coke. Feem ntau cov roj rauv hauv Suav teb tsuas yog tsim coke, thiab feem ntau ntawm cov kev ua haujlwm cais yog nqa tawm hauv cov nroj tsuag carbon.

Roj av coke yog cais raws li theem ntawm cov lus faj sulfur. Nws tuaj yeem muab faib ua peb hom: High-Sulfur Coke (cov Sulfur cov ntsiab lus saum 1.5%), thiab cov tub ntxhais-sulfur ceke (cov tub rog sulfur Kev tsim cov khoom lag luam cuav feem ntau siv cov coek sulfur coke ntau lawm.

Koob coke yog ib hom zoo coke nrog pom tseeb fibrous kev ntxhib los mos, qis qis kev nthuav dav cov coefficiention thiab yooj yim graphitization. Thaum Coke tau tawg, nws tuaj yeem sib cais rau hauv elongated hais raws li kev ntxhib los mos (cov nam piv feem ntau yog tshaj li 1.75). Ib qho anisotropic fibrous qauv yuav tau pom nyob hauv qab polarized lub koob tsom iav, yog li nws hu ua koob coke.

Lub anisotropy ntawm lub cev nqaij daim tawv thiab cov kws kho tshuab ntawm koob coke yog pom tseeb heev. Nws muaj cov hluav taws xob zoo thiab thermal condalivity zoo li cov cua sov mus rau qhov ntev ntawm cov hais, thiab muaj qhov tsis muaj zog thermal. Thaum lub sij hawm extrusion molding, feem ntau ntawm cov axes ntev ntawm cov hais tau npaj rau hauv kev coj mus sib cav. Yog li ntawd, rab koob coke yog cov khoom tseem ceeb rau kev ua lag luam ntawm graphite. Cov tsim tawm graphite tau muaj kev tiv thaiv tsawg, tsawg thermal nthuav kev coefficient thiab zoo thermal poob siab tsis kam.

Koob coke tau muab faib ua cov roj ntsha npau taws ua nrog cov khoom siv roj hmab uas ua rau cov roj hmab coke ua nrog cov khoom siv hluav taws xob.

Coal lub suab yog ib qho ntawm cov khoom tseem ceeb ntawm thee tar sar ua. Nws yog sib xyaw ntawm ntau yam hydrocarbons. Nws yog cov xim dub siab-viscosity semi-khoom lossis khoom ntawm chav tsev kub. Nws tsis muaj qhov sib luag melting point. Nws softens tom qab cua sov thiab ces melts. Qhov ceev yog 1. 25-1. 35G / CM3. Raws li nws cov khoom muag muag, nws tuaj yeem faib ua cov ntsuas kub tsawg, qhov nruab nrab nruab nrab thiab kub npau. Cov qoob loo ntawm nruab nrab kub suab yog 54-56% ntawm cov tar thee. Qhov muaj pes tsawg leeg ntawm cov pob zeb ua kom zoo nkauj yog qhov nyuaj, uas yog cuam tshuam nrog cov khoom ntawm cov pob zeb thiab cov ntsiab lus ntawm COKING txheej txheem ua haujlwm. Muaj ntau cov ntsuas uas ua rau cov yam ntxwv ntawm cov ntxaij uas tawg, ti), quinoline insoluble teeb meem (qi), cum pitch rheology.

Thee suab siv yog cov phau ntawv thiab impregnant nyob rau hauv cov pa roj carbon kev lag luam, thiab nws cov kev ua tau zoo muaj kev cuam tshuam zoo ntawm cov txheej txheem ntau lawm thiab cov khoom lag luam zoo ntawm cov roj carbon ntau. Binder Asphalt feem ntau siv nruab nrab kub lossis nruab nrab kub hloov asphalt nrog nruab nrab softenate, thiab co resin tus nqi, thiab siab resin. Raws li impregnant, siv nruab nrab ayrhalt nrog cov softening point, qis qi, thiab zoo rheological cov khoom.

Calcining: Cov pa roj carbonaceous raw khoom yog qhov kub-kho cov dej sov thiab sib raug zoo txhim kho kev ua noj ua haus ntawm cov txheej txheem ntau lawm yog hu ua kev cais. Feem ntau, carbonaceous raw zaub mov tau calcined siv roj roj thiab lawv tus kheej cov teeb meem tsis muaj roj, thiab kub siab tshaj plaws yog}} degree.

Calcining ua rau muaj kev hloov pauv ntawm cov qauv thiab tshuaj lom neeg ntawm kev ua kom muaj zog, txhim kho cov tshuaj sib xyaw, thiab tso lub hauv paus rau cov txheej txheem tom ntej.

Cov khoom siv cais tsuas suav nrog Tank Calciner, Miln thiab Calciper Calciner. Lub calcination zoo tswj qhov ntsuas yog tias qhov tseeb nthe ntawm roj ceke tsis muaj ntau tshaj li 2.12g / cm3, thiab cov tsis kam yog tsis ntau tshaj 500μω.m.