Njira yopewera kuti flake graphite isakhale oxidized pa kutentha kwakukulu

Pofuna kupewa dzimbiri kuwonongeka chifukwa makutidwe ndi okosijeni wa flake graphite pa kutentha, m`pofunika kupeza zinthu kuvala malaya pa kutentha zakuthupi, amene angathe kuteteza flake graphite kuti makutidwe ndi okosijeni pa kutentha kwambiri. Kuti tipeze malaya amtundu wa flake graphite anti-oxidation, choyamba tiyenera kukhala ndi mikhalidwe ina monga kukana kutentha kwambiri, kukhazikika bwino, magwiridwe antchito abwino odana ndi dzimbiri, luso lamphamvu la anti-oxidation komanso kuuma kwakukulu. Otsatira otsatirawa a Furuite graphite amagawana njira zopewerachithunzi cha graphitekukhala oxidized pa kutentha kwakukulu:

1. Gwiritsani ntchito zinthu zokhala ndi mphamvu ya nthunzi zosakwana 0.1333MPa(1650 ℃) ndi zinthu zabwino zonse.

2. Sankhani zinthu zamagalasi zomwe zimakwaniritsa zofunikira pakugwirira ntchito ngati chinthu chodzisindikizira, ndikupangitsa kukhala chinthu chosindikizira ming'alu pa kutentha kogwira ntchito.

3. Malinga ndi ntchito ya mphamvu yaulere ya zomwe zimachitika ndi okosijeni ndi kutentha, pa kutentha kwachitsulo (1650-1750 ℃), zida zomwe zimalumikizana kwambiri ndi okosijeni kuposa mpweya wa carbon-oxygen zimasankhidwa kuti zitenge mpweya woyamba. kuti oxidize okha ndi kutetezachithunzi cha graphite. Voliyumu ya gawo latsopano lomwe limapangidwa pambuyo pa okosijeni ndi lalikulu kuposa la gawo loyambirira, lomwe limathandiza kutsekereza njira yamkati ya oxygen ndikupanga chotchinga cha okosijeni.

4. Pa kutentha kwa ntchito, chiwerengero chachikulu cha inclusions monga Al2O3, SiO2 ndi Fe2O3 muzitsulo zosungunula zimatha kugulitsidwa, zomwe zimadzichitira okha ku sinter, kotero kuti inclusions zosiyanasiyana kuchokera kuzitsulo zosungunuka pang'onopang'ono zilowe mu zokutira.

Furuite graphite amatikumbutsa kuti makutidwe ndi okosijeni kutentha kwa flake graphite m'madera China waukulu kubala ndi 560815 ℃ pamene zili mpweya zili 88% 96% ndi tinthu kukula pamwamba -400 mauna. Pakati pawo, pamene tinthu kukula kwa graphite ndi 0.0970.105mm, makutidwe ndi okosijeni kutentha graphite ndi oposa 90% mpweya zili 600815 ℃ ndi graphite ndi zosakwana 90% mpweya zili 62075 ℃. Kwambiri crystallinechithunzi cha graphitendiye, ndipamwamba kutentha kwa okosijeni pachimake ndi, ndipo kuchepa kwa okosijeni kuwonda pa kutentha kwakukulu kumakhala.