Synthetic graphite yog ib hom polycrystalline zoo ib yam li crystallography. Muaj ntau hom graphite cuav thiab ntau yam txheej txheem tsim khoom.
Hauv kev nkag siab dav dav, txhua yam khoom siv graphite tau txais tom qab carbonization ntawm cov organic matter thiab graphitization ntawm qhov kub siab tuaj yeem hu ua graphite dag, xws li carbon (graphite) fiber, pyrolytic carbon (graphite), ua npuas ncauj graphite, thiab lwm yam.
Hauv lub ntsiab lus nqaim, graphite cuav feem ntau yog hais txog cov khoom siv khov kho, xws li graphite electrode, isostatic graphite, ua los ntawm kev sib xyaw, sib tov, molding, carbonization (hu ua roasting hauv kev lag luam) thiab graphitization, nrog cov ntsiab lus qis ntawm cov khoom siv raw charcoal (petroleum coke, asphalt coke, thiab lwm yam) ua cov khoom sib sau ua ke, thee suab ua cov khoom siv khi.
Muaj ntau hom graphite cuav, suav nrog hmoov, fiber thiab thaiv, thaum lub ntsiab lus nqaim ntawm graphite cuav feem ntau yog thaiv, uas yuav tsum tau ua tiav rau hauv ib qho duab thaum siv. Nws tuaj yeem suav hais tias yog ib hom khoom siv ntau theem, suav nrog theem graphite hloov pauv los ntawm cov pa roj carbon xws li roj av coke lossis asphalt coke, theem graphite hloov pauv los ntawm cov thee pitch binder coated nyob ib puag ncig cov khoom me me, cov khoom me me lossis cov qhov tsim los ntawm cov thee pitch binder tom qab kev kho cua sov, thiab lwm yam. Feem ntau hais lus, qhov siab dua qhov kub kho cua sov, qhov siab dua ntawm graphitization. Kev tsim khoom lag luam ntawm graphite cuav, qib graphitization feem ntau tsawg dua 90%.
Piv nrog rau cov graphite ntuj, cov graphite dag muaj cov cua sov hloov pauv tsis zoo thiab cov hluav taws xob conductivity, lubricity thiab plasticity, tab sis cov graphite dag kuj muaj kev hnav zoo dua, tiv taus corrosion thiab permeability qis dua li cov graphite ntuj.
Cov khoom siv raw rau kev tsim cov graphite cuav feem ntau suav nrog roj av coke, koob coke, asphalt coke, thee pitch, carbon microspheres, thiab lwm yam. Nws cov khoom lag luam downstream feem ntau suav nrog graphite electrode, pre-baked anode, isostatic graphite, high purity graphite, nuclear graphite, heat exchanger thiab lwm yam.
Daim ntawv thov khoom ntawm cov khoom siv graphite cuav yog feem ntau pom tseeb hauv cov hauv qab no:
1. Graphite electrode: Siv roj av coke thiab koob coke ua cov khoom siv raw thiab thee pitch ua cov binder, graphite electrode yog ua los ntawm calcination, batching, sib tov, nias, roasting, graptitization thiab machining. Nws yog dav siv hauv hluav taws xob cua sov hlau, kev lag luam silicon, daj phosphorus thiab lwm yam khoom siv los ntawm kev tso tawm lub zog hluav taws xob hauv daim ntawv ntawm arc kom sov thiab yaj cov nqi.
2. Pre-baked anode: ua los ntawm roj av coke ua raw khoom thiab thee pitch ua binder los ntawm calcination, batching, sib tov, nias, roasting, impregnation, graphitization thiab machining, nws feem ntau yog siv ua conductive anode ntawm electrolytic txhuas khoom siv.
3. Cov kabmob, lub nplhaib kaw: xa cov khoom siv corrosive media, dav siv cov graphite dag ua los ntawm piston rings, sealing rings thiab bearings, ua haujlwm yam tsis ntxiv roj lubricating.
4. Lub tshuab hloov cua sov, chav lim: cov graphite cuav muaj cov yam ntxwv ntawm kev tiv thaiv corrosion, zoo thermal conductivity thiab qis permeability. Nws yog dav siv hauv kev lag luam tshuaj lom neeg los ua lub tshuab hloov cua sov, lub tank tshuaj tiv thaiv, absorber, lim thiab lwm yam khoom siv.
5. Graphite Tshwj Xeeb: nrog cov roj av coke zoo ua cov khoom siv raw, thee pitch lossis cov khoom siv hluavtaws ua cov binder, los ntawm kev npaj cov khoom siv raw, batching, kneading, nias, crushing, sib tov kneading, molding, ntau yam roasting, ntau yam penetration, purification thiab graphitization, machining thiab ua, feem ntau suav nrog isostatic graphite, nuclear graphite, high purity graphite, siv rau hauv aerospace, electronics, nuclear kev lag luam sectors.
Lub sijhawm tshaj tawm: Kaum Ib Hlis-23-2022