Nrog rau kev loj hlob sai ntawm cov tsheb fais fab tshiab thoob ntiaj teb, kev xav tau ntawm cov khoom siv roj teeb lithium anode tau nce ntxiv ntau heev. Raws li cov ntaub ntawv txheeb cais, xyoo 2021, yim lub tuam txhab lithium roj teeb anode loj tshaj plaws hauv kev lag luam npaj yuav nthuav lawv lub peev xwm tsim khoom mus txog ze li ib lab tons. Graphitization muaj qhov cuam tshuam loj tshaj plaws rau cov ntsuas thiab tus nqi ntawm cov khoom siv anode. Cov khoom siv graphitization hauv Suav teb muaj ntau hom, kev siv hluav taws xob ntau, kev ua qias tuaj ntau thiab qib qis ntawm kev ua haujlwm tsis siv neeg, uas txwv tsis pub kev tsim cov khoom siv graphite anode rau qee qhov. Nws yog qhov teeb meem tseem ceeb uas yuav tsum tau daws sai sai hauv cov txheej txheem tsim khoom ntawm cov khoom siv anode.
1. Qhov xwm txheej tam sim no thiab kev sib piv ntawm cov cua sov graphitization tsis zoo
1.1 Atchison tsis zoo graphitization cub tawg
Hauv hom cub tawg hloov kho raws li cov hluav taws xob Aitcheson cub tawg graphitization cub tawg, lub cub tawg qub yog thauj nrog graphite crucible ua tus nqa khoom ntawm cov khoom siv electrode tsis zoo (lub crucible yog thauj nrog cov khoom siv carbonized negative electrode raw), lub hauv paus cub tawg yog puv nrog cov khoom siv tiv thaiv cua sov, txheej sab nraud yog puv nrog cov khoom siv rwb thaiv tsev thiab phab ntsa cub tawg rwb thaiv tsev. Tom qab hluav taws xob, qhov kub siab ntawm 2800 ~ 3000 ℃ yog tsim los ntawm kev cua sov ntawm cov khoom siv resistor, thiab cov khoom siv tsis zoo hauv crucible yog cua sov tsis ncaj qha kom ua tiav cov pob zeb kub siab inking ntawm cov khoom siv tsis zoo.
1.2. Lub cub tawg graphitization sab hauv
Tus qauv cub tawg yog qhov siv rau lub cub tawg graphitization siv rau kev tsim cov graphite electrodes, thiab ntau lub electrode crucible (loaded nrog negative electrode material) txuas nrog series longitudinally. Lub electrode crucible yog ob qho tib si lub cab kuj thiab lub cev cua sov, thiab tam sim no hla lub electrode crucible los tsim kom muaj qhov kub siab thiab ncaj qha cua sov cov khoom sab hauv electrode tsis zoo. Cov txheej txheem GRAPHItization tsis siv cov khoom tiv taus, ua kom yooj yim rau kev ua haujlwm ntawm kev thauj khoom thiab ci, thiab txo qhov poob ntawm cov khoom tiv taus, txuag hluav taws xob siv.
1.3 Lub thawv ntawv hom graphitization cub tawg
Daim ntawv thov No.1 tau nce ntxiv nyob rau xyoo tas los no, qhov tseem ceeb yog kawm Series acheson graphitization cub tawg thiab concatenated technology yam ntxwv ntawm graphitizing cub tawg, lub hauv paus ntawm lub cub tawg ntawm kev siv ntau daim ntawm anode phaj grid khoom lub thawv qauv, cov khoom siv rau hauv cathode hauv cov khoom siv raw, los ntawm txhua qhov kev sib txuas ntawm anode phaj kem yog kho, txhua lub thawv, kev siv anode phaj foob nrog tib cov khoom siv. Lub kem thiab anode phaj ntawm cov khoom siv lub thawv qauv ua ke tsim lub cev cua sov. Cov hluav taws xob ntws los ntawm lub electrode ntawm lub taub hau cub tawg mus rau hauv lub cev cua sov ntawm lub hauv paus cub tawg, thiab qhov kub siab tsim ncaj qha cua sov cov khoom siv anode hauv lub thawv kom ua tiav lub hom phiaj ntawm graphitization.
1.4 Kev sib piv ntawm peb hom cub tawg graphitization
Lub cub tawg graphitization sab hauv yog kom ncaj qha cua sov cov khoom los ntawm kev cua sov lub electrode graphite hollow. Lub "Joule cua sov" tsim los ntawm tam sim no los ntawm electrode crucible feem ntau yog siv los cua sov cov khoom thiab crucible. Lub cua sov ceev ceev, qhov kub faib yog sib npaug, thiab thermal efficiency siab dua li lub cub tawg Atchison ib txwm muaj nrog cov khoom tiv taus cua sov. Lub cub tawg graphitization grid-box siv cov txiaj ntsig ntawm lub cub tawg graphitization sab hauv, thiab siv lub phaj anode ua ntej ci nrog tus nqi qis dua li lub cev cua sov. Piv nrog rau lub cub tawg graphitization serial, lub peev xwm thauj khoom ntawm lub cub tawg graphitization grid-box loj dua, thiab kev siv hluav taws xob ib yam khoom raug txo qis raws li.
2. Kev tsim kho ntawm lub cub tawg graphitization tsis zoo
2. 1 Txhim kho qhov qauv phab ntsa puag ncig
Tam sim no, cov txheej txheem rwb thaiv tsev ntawm ntau lub cub tawg graphitization feem ntau yog puv nrog cov pa roj carbon dub thiab roj av coke. Qhov no yog ib feem ntawm cov khoom rwb thaiv tsev thaum lub sijhawm tsim cov khoom kub oxidation hlawv, txhua zaus thauj khoom tawm ntawm qhov xav tau hloov lossis ntxiv cov khoom rwb thaiv tsev tshwj xeeb, hloov cov txheej txheem ntawm qhov chaw tsis zoo, kev siv zog ua haujlwm siab.
Yuav xav txog ib qho yog siv cov cement masonry phab ntsa uas muaj zog tshwj xeeb thiab kub siab, txhim kho lub zog tag nrho, xyuas kom meej tias phab ntsa hauv tag nrho lub voj voog ua haujlwm ruaj khov hauv kev hloov pauv, kev sib khi cib tib lub sijhawm, tiv thaiv huab cua ntau dhau los ntawm cov kab nrib pleb ntawm phab ntsa cib thiab qhov sib koom ua ke rau hauv lub cub tawg, txo qhov oxidation hlawv poob ntawm cov khoom siv rwb thaiv tsev thiab cov ntaub ntawv anode;
Qhov thib ob yog kev teeb tsa cov txheej txheem rwb thaiv tsev loj loj dai sab nraum phab ntsa cua sov, xws li kev siv cov fiberboard muaj zog lossis calcium silicate board, theem cua sov ua lub luag haujlwm zoo hauv kev sib khi thiab rwb thaiv tsev, theem txias yooj yim tshem tawm kom txias sai; Qhov thib peb, txoj kab cua tso rau hauv qab ntawm lub cub tawg thiab phab ntsa cua sov. Txoj kab cua tso cai siv cov qauv cib ua ntej nrog lub qhov ncauj poj niam ntawm txoj siv sia, thaum txhawb nqa cov cement masonry kub siab, thiab xav txog qhov yuam kom cua txias hauv theem txias.
2. 2 Txhim kho qhov nkhaus fais fab los ntawm kev sim ua lej
Tam sim no, qhov nkhaus fais fab ntawm lub cub tawg graphitization electrode tsis zoo yog ua raws li qhov kev paub dhau los, thiab cov txheej txheem graphitization raug kho manually txhua lub sijhawm raws li qhov kub thiab qhov cub tawg, thiab tsis muaj tus qauv sib koom ua ke. Kev ua kom zoo dua qhov nkhaus cua sov tuaj yeem txo qhov ntsuas kev siv hluav taws xob thiab xyuas kom meej tias kev ua haujlwm zoo ntawm lub cub tawg. TUS QAUV NUMERICAL OF koob sib dhos YUAV TSUM TAU TXAIS LOS NTAWM kev tshawb fawb raws li ntau yam kev mob ciam teb thiab cov yam ntxwv ntawm lub cev, thiab kev sib raug zoo ntawm tam sim no, voltage, tag nrho lub zog thiab qhov kub thiab txias faib ntawm qhov seem hauv cov txheej txheem grapHItization yuav tsum tau soj ntsuam, yog li tsim cov nkhaus cua sov tsim nyog thiab kho nws tas li hauv kev ua haujlwm tiag tiag. Xws li nyob rau theem thaum ntxov ntawm kev xa hluav taws xob yog kev siv kev xa hluav taws xob siab, tom qab ntawd txo lub zog sai sai thiab tom qab ntawd maj mam nce, lub zog thiab tom qab ntawd txo lub zog kom txog thaum kawg ntawm lub zog
2. 3 Ntev lub neej kev pabcuam ntawm crucible thiab lub cev cua sov
Ntxiv rau kev siv hluav taws xob, lub neej ntawm crucible thiab lub tshuab cua sov kuj txiav txim siab ncaj qha rau tus nqi ntawm kev ua graphite tsis zoo. Rau graphite crucible thiab graphite lub cev cua sov, lub kaw lus tswj kev tsim khoom ntawm kev thauj khoom tawm, kev tswj hwm qhov kub thiab txias kom tsim nyog, kab ntau lawm crucible tsis siv neeg, txhim kho kev sib khi kom tiv thaiv kev oxidation thiab lwm yam kev ntsuas kom nce lub sijhawm rov ua dua tshiab crucible, txo tus nqi ntawm graphite inking. Ntxiv rau cov kev ntsuas saum toj no, lub phaj cua sov ntawm lub thawv grid box graphitization cub kuj tseem siv tau ua cov khoom siv cua sov ntawm cov anode ua ntej ci, electrode lossis cov khoom siv carbonaceous ruaj khov nrog kev tiv taus siab kom txuag tau tus nqi graphitization.
2.4 Kev tswj cov pa roj thiab kev siv cov cua sov pov tseg
Cov pa roj flue uas tsim tawm thaum lub sijhawm graphitization feem ntau yog los ntawm cov volatiles thiab cov khoom sib xyaw ntawm cov khoom anode, kev hlawv cov pa roj carbon ntawm qhov chaw, cua xau thiab lwm yam. Thaum pib lub cub tawg, cov volatiles thiab cov hmoov av tawm ntau heev, qhov chaw ua haujlwm tsis zoo, feem ntau cov tuam txhab tsis muaj kev ntsuas kev kho mob zoo, qhov no yog qhov teeb meem loj tshaj plaws uas cuam tshuam rau kev noj qab haus huv thiab kev nyab xeeb ntawm cov neeg ua haujlwm hauv kev tsim cov electrode tsis zoo. Yuav tsum muaj kev siv zog ntau dua los xav txog kev sau thiab tswj cov pa roj flue thiab hmoov av hauv chaw ua haujlwm, thiab yuav tsum muaj kev ntsuas cua kom tsim nyog los txo qhov kub ntawm chaw ua haujlwm thiab txhim kho qhov chaw ua haujlwm ntawm chaw ua haujlwm graphitization.
Tom qab cov pa roj flue tuaj yeem sau los ntawm lub flue mus rau hauv chav combustion chamber sib xyaw combustion, tshem tawm feem ntau ntawm cov tar thiab hmoov av hauv cov pa roj flue, nws xav tias qhov kub ntawm cov pa roj flue hauv chav combustion yog siab dua 800 ℃, thiab cov cua sov pov tseg ntawm cov pa roj flue tuaj yeem rov qab tau los ntawm lub boiler khib nyiab cua sov lossis lub plhaub cua sov exchanger. Lub tshuab RTO incineration siv rau hauv kev kho pa roj carbon asphalt kuj tseem siv tau rau kev siv, thiab cov pa roj asphalt flue raug cua sov rau 850 ~ 900 ℃. Los ntawm kev khaws cia cua sov combustion, cov asphalt thiab cov khoom volatile thiab lwm yam polycyclic aromatic hydrocarbons hauv cov pa roj flue raug oxidized thiab thaum kawg decomposed rau hauv CO2 thiab H2O, thiab qhov ua tau zoo ntawm kev ntxuav tuaj yeem ncav cuag ntau dua 99%. Lub kaw lus muaj kev ua haujlwm ruaj khov thiab tus nqi ua haujlwm siab.
2. 5 Lub cub tawg graphitization tsis zoo ntsug
Cov qauv cua sov graphitization saum toj no yog lub qauv tseem ceeb ntawm kev tsim cov khoom siv anode hauv Suav teb, qhov tseem ceeb yog kev tsim khoom tsis tu ncua, kev ua haujlwm thermal qis, kev thauj khoom tawm feem ntau yog nyob ntawm kev ua haujlwm tes, qib ntawm kev ua haujlwm tsis siab. Lub cub tawg graphitization ntsug zoo sib xws tuaj yeem tsim los ntawm kev xa mus rau tus qauv ntawm lub cub tawg roj av coke calcination thiab lub cub tawg bauxite calcination ncej. Lub zog tiv thaiv ARC yog siv ua qhov chaw kub kub, cov khoom siv raug tso tawm tas li los ntawm nws tus kheej lub ntiajteb txawj nqus, thiab cov qauv txias dej lossis gasification txias yog siv los txias cov khoom siv kub kub hauv thaj chaw tawm, thiab lub tshuab xa hmoov pneumatic siv los tso tawm thiab pub cov khoom siv sab nraum lub cub tawg. Hom FURNACE tuaj yeem ua tiav kev tsim khoom tas li, qhov poob ntawm lub cev cua sov tuaj yeem tsis quav ntsej, yog li qhov ua haujlwm thermal tau zoo dua qub, qhov zoo ntawm cov zis thiab kev siv hluav taws xob yog qhov pom tseeb, thiab kev ua haujlwm tsis siv neeg tag nrho tuaj yeem ua tiav tag nrho. Cov teeb meem tseem ceeb uas yuav tsum tau daws yog qhov fluidity ntawm hmoov, qhov sib xws ntawm graphitization degree, kev nyab xeeb, kev saib xyuas kub thiab txias, thiab lwm yam. Nws ntseeg tau tias nrog kev txhim kho zoo ntawm lub cub tawg kom nthuav dav kev tsim khoom lag luam, nws yuav teeb tsa kev hloov pauv hauv thaj chaw ntawm negative electrode graphitization.
3 lub pob ntseg lus
Cov txheej txheem tshuaj graphite yog qhov teeb meem loj tshaj plaws uas ua rau cov tuam txhab tsim khoom siv roj teeb lithium anode muaj teeb meem. Qhov laj thawj tseem ceeb yog tias tseem muaj qee qhov teeb meem hauv kev siv hluav taws xob, tus nqi, kev tiv thaiv ib puag ncig, qib automation, kev nyab xeeb thiab lwm yam ntawm lub cub tawg graphitization uas siv dav. Lub neej yav tom ntej ntawm kev lag luam yog kev tsim cov qauv cub tawg uas ua haujlwm tas mus li thiab teeb tsa, thiab txhawb nqa cov chaw pabcuam pabcuam uas laus thiab txhim khu kev qha. Lub sijhawm ntawd, cov teeb meem graphitization uas ua rau cov tuam txhab lag luam muaj teeb meem yuav raug txhim kho zoo heev, thiab kev lag luam yuav nkag mus rau lub sijhawm txhim kho ruaj khov, txhawb kev txhim kho sai ntawm cov lag luam tshiab uas muaj feem cuam tshuam nrog lub zog.
Lub sijhawm tshaj tawm: Lub Yim Hli-19-2022