Cov graphite uas nthuav dav, tseem hu ua vermicular graphite, yog ib qho crystalline compound uas siv cov txheej txheem lub cev lossis tshuaj lom neeg los sib xyaw cov tshuaj reactants uas tsis yog carbon rau hauv cov ntaub ntawv graphitic intercalated nanocarbon uas muaj qhov sib txawv ntawm ntuj thiab sib xyaw nrog cov dav hlau carbon hexagonal thaum tswj cov qauv txheej txheem Graphite. Nws tsis tsuas yog tswj cov khoom zoo heev ntawm lub cev thiab tshuaj lom neeg ntawm graphite, xws li kev tiv taus kub siab, kev tiv taus corrosion, neutron flux, X-ray thiab gamma-ray ntev irradiation. Nws kuj muaj cov khoom zoo heev ntawm lub cev thiab tshuaj lom neeg, xws li kev sib txhuam coefficient qis, kev ua kom zoo ntawm tus kheej, kev ua hluav taws xob thiab thermal conductivity, thiab anisotropy. Ntxiv mus, vim muaj kev sib cuam tshuam ntawm cov khoom sib xyaw thiab cov txheej txheem graphite, cov graphite uas nthuav dav ua rau pom cov khoom tshiab uas cov graphite qub thiab cov khoom sib xyaw tsis muaj, thiab kov yeej qhov brittleness thiab kev cuam tshuam ntawm cov graphite ntuj. Cov neeg kho graphite Furuite hauv qab no qhia txog kev qhia txog cov txheej txheem kev tsim khoom lag luam thiab kev siv cov graphite nthuav dav:
1. Cov txheej txheem hluavtaws uas siv ntau hauv kev lag luam
①Kev tshuaj lom neeg oxidation
Cov Zoo: Kev siv tshuaj oxidation yog ib txoj kev siv dav thiab tau tsim zoo hauv kev lag luam. Yog li ntawd, nws muaj cov txiaj ntsig pom tseeb, thev naus laus zis paub tab thiab tus nqi qis.
Qhov Tsis Zoo: Tus neeg sawv cev intercalating feem ntau yog concentrated sulfuric acid, uas siv ntau cov kua qaub. Muaj Sox cov pa phem hauv cov txheej txheem ntau lawm, thiab cov seem hauv cov khoom kuj ua rau cov khoom siv synthesis xeb.
② Kev sib xyaw ua ke ntawm cov tshuaj lom neeg
Ib yam li cov tshuaj oxidation, nws yog ib qho ntawm cov txheej txheem kev lag luam synthesis rau kev nthuav dav graphite.
Qhov Zoo: Tsis tas yuav ntxiv cov tshuaj oxidant muaj zog, xws li cov kua qaub muaj zog, thiab qhov kev ua haujlwm tuaj yeem tswj tau los ntawm kev kho cov kev teeb tsa xws li tam sim no thiab voltage. Cov khoom siv tsim khoom yooj yim, cov khoom tsim khoom loj, cov electrolyte tsis muaj kuab paug, thiab tuaj yeem siv dua.
Qhov Tsis Zoo: Qhov ruaj khov ntawm cov khoom tsim tawm tsis zoo dua li lwm txoj hauv kev, uas xav tau cov cuab yeej siv siab dua, thiab muaj ntau yam uas cuam tshuam rau qhov zoo ntawm cov khoom. Qee zaum, qhov ntim ntawm cov khoom nthuav dav raug txo qis vim yog qhov nce ntawm qhov kub thiab txias. Tsis tas li ntawd, muaj cov tshuaj tiv thaiv sab nraud ntawm cov dej ntws siab hauv cov kua dej, yog li nws nyuaj rau tau txais cov tshuaj sib xyaw ua ntej.
2. Cov lag luam tseem ceeb thiab muaj peev xwm tsim khoom
Kev tsim cov khoom graphite nthuav dav hauv kuv lub tebchaws tau loj hlob los ntawm theem pib mus rau ntau dua 100 lub chaw tsim khoom, nrog rau cov khoom tsim tawm txhua xyoo txog li 30,000 tons, thiab kev ua lag luam tsawg. Tsis tas li ntawd, feem ntau cov chaw tsim khoom feem ntau yog cov khoom siv foob qis, tsis tshua siv hauv cov foob tsheb thiab cov teeb pom kev zoo nuclear. Txawm li cas los xij, nrog rau kev txhim kho ntawm cov thev naus laus zis hauv tsev, qhov sib piv ntawm cov khoom lag luam siab yuav maj mam nce ntxiv.
3. Kev xav tau ntawm kev ua lag luam thiab kev kwv yees ntawm cov ntaub ntawv kaw
Tam sim no, cov graphite uas nthuav dav feem ntau yog siv ua cov khoom siv sib khi hauv tsheb, xws li cov gaskets lub tog raj kheej, cov gaskets nkag thiab tawm, thiab lwm yam. Cov khoom siv sib khi graphite uas nthuav dav hauv kuv lub tebchaws feem ntau yog siv ua cov khoom sib khi. Tam sim no, cov graphite uas nthuav dav nrog cov ntsiab lus carbon tsawg tau tsim, uas tuaj yeem txo cov nqi tsim khoom ntawm cov graphite uas nthuav dav, yog li hloov cov asbestos ntawm qhov loj thiab nce qhov kev thov. Ntawm qhov tod tes, yog tias cov khoom siv sib khi yas, roj hmab thiab hlau tuaj yeem hloov pauv ib feem, qhov kev thov txhua xyoo hauv tsev rau cov khoom siv sib khi graphite uas nthuav dav yuav ntau dua.
Hauv kev lag luam tsheb, txhua lub gasket lub taub hau ntawm lub tsheb, qhov cua nkag thiab qhov chaw tso pa tawm xav tau li 2 ~ 10kg ntawm cov graphite nthuav dav, thiab txhua 10,000 lub tsheb xav tau 20 ~ 100 tons ntawm cov graphite nthuav dav. Kev lag luam tsheb hauv Suav teb tau nkag mus rau lub sijhawm ntawm kev txhim kho sai. Yog li ntawd, kuv lub teb chaws qhov kev thov txhua xyoo rau cov ntaub ntawv kaw graphite nthuav dav tseem yog qhov tseeb heev.
Lub sijhawm tshaj tawm: Cuaj hlis-07-2022