Kusanthula kwatsopano kwa mfundo yotengera kutentha kwa silicon carbide graphite crucible

1. Zinthu zakuthupi ndi kapangidwe kake

silicon carbide graphite crucible imayengedwa kuchokera ku zinthu monga graphite ndi silicon carbide kudzera munjira zovuta, kuphatikiza katundu wawo wabwino kwambiri. Zinthu zazikulu za graphite ndi izi:

 

Magetsi ndi matenthedwe conductivity: Graphite ali ndi magetsi abwino ndi matenthedwe madutsidwe, kulola kuti mofulumira kusamutsa kutentha ndi kuchepetsa kutaya mphamvu mu malo kutentha kwambiri.

Kukhazikika Kwama Chemical: Graphite imakhalabe yokhazikika ndipo imakana kusintha kwamankhwala m'malo ambiri acidic ndi amchere.

Kukana kutentha kwakukulu: Graphite imatha kusunga umphumphu kwa nthawi yaitali m'malo otentha kwambiri popanda kusintha kwakukulu chifukwa cha kuwonjezereka kwa kutentha kapena kutsika.

Zinthu zazikulu za silicon carbide ndi izi:

 

Mphamvu zamakina: Silicon carbide imakhala ndi kuuma kwambiri komanso mphamvu zamakina, ndipo imalimbana ndi kuvala kwamakina komanso kukhudzidwa.

Kukana kwa dzimbiri: Kumawonetsa kukana kwa dzimbiri kwabwino kwambiri pakatentha kwambiri komanso mlengalenga wowononga.

Kukhazikika kwamafuta: Silicon carbide imatha kusunga zinthu zokhazikika zamafuta ndi zakuthupi m'malo otentha kwambiri.

Kuphatikiza kwa zinthu ziwirizi kumapangasilicon carbide graphite crucibles, omwe ali ndi kutentha kwakukulu, kutentha kwabwino kwambiri komanso kukhazikika kwa mankhwala, kuwapangitsa kukhala abwino kwa ntchito zotentha kwambiri.

 

2. Chemical reaction ndi endothermic limagwirira

silicon carbide graphite crucible amakumana ndi zochitika zosiyanasiyana za mankhwala m'malo otentha kwambiri, omwe samangowonetsa momwe zinthu zimagwirira ntchito, komanso ndizofunikira kwambiri pakuchita kwake kutentha. Zotsatira zazikulu za Chemical ndi:

 

Redox reaction: The metal oxide imachita ndi chochepetsera (monga carbon) mu crucible, kutulutsa kutentha kwakukulu. Mwachitsanzo, iron oxide imakhudzidwa ndi mpweya kupanga chitsulo ndi carbon dioxide:

 

Fe2O3 + 3C→2Fe + 3CO

Kutentha kotulutsidwa ndi izi kumatengedwa ndi crucible, kukweza kutentha kwake konse.

 

Pyrolysis reaction: Pa kutentha kwambiri, zinthu zina zimawonongeka zomwe zimapanga mamolekyu ang'onoang'ono ndikutulutsa kutentha. Mwachitsanzo, calcium carbonate imawola pa kutentha kwambiri kuti ipange calcium oxide ndi carbon dioxide:

 

CaCO3→CaO + CO2

pyrolysis reaction iyi imatulutsanso kutentha, komwe kumatengedwa ndi crucible.

 

Nthunzi: Nthunzi yamadzi imakumana ndi mpweya pakatentha kwambiri kuti ipange haidrojeni ndi carbon monoxide:

 

H2O + C→H2 + CO

Kutentha kotulutsidwa ndi izi kumagwiritsidwanso ntchito ndi crucible.

 

Kutentha kopangidwa ndi machitidwewa ndi njira yofunika kwambirisilicon carbide graphite crucible kuyamwa kutentha, kulola kuti kutengeka bwino ndi kusamutsa mphamvu ya kutentha panthawi yotentha.

 

atatu. Kusanthula mozama kwa mfundo zogwirira ntchito

Mfundo yogwirira ntchito yasilicon carbide graphite crucible sichimangodalira mphamvu zakuthupi zakuthupi, komanso zimadalira kwambiri kugwiritsa ntchito mphamvu ya kutentha ndi machitidwe a mankhwala. Njira yeniyeni ndi iyi:

 

Heating crucible: Kutentha kwakunja kumatenthetsa crucible, ndipo graphite ndi silicon carbide zida mkati zimayamwa kutentha ndikufikira kutentha kwambiri.

 

Chemical reaction endothermic: Pa kutentha kwambiri, zochita za mankhwala (monga redox reactions, pyrolysis reactions, steam reactions, etc.) zimachitika mkati mwa crucible, kutulutsa kuchuluka kwa kutentha kwamphamvu, komwe kumatengedwa ndi crucible material.

 

Thermal conductivity: Chifukwa cha kutentha kwabwino kwa graphite, kutentha kwa crucible kumayendetsedwa mofulumira ku zinthu zomwe zili mu crucible, zomwe zimapangitsa kutentha kwake kukwera mofulumira.

 

Kutentha kosalekeza: Pamene mankhwala akupitirirabe ndi kutentha kwakunja kukupitirirabe, crucible imatha kusunga kutentha kwakukulu ndikupereka mphamvu zowonjezera kutentha kwa zipangizo zomwe zili mu crucible.

 

Kuwongolera kutentha kumeneku ndi njira yogwiritsira ntchito mphamvu yotentha kumatsimikizira kuti ntchito yabwino kwambirisilicon carbide graphite crucible pansi pa kutentha kwakukulu. Njirayi sikuti imangowonjezera kutentha kwa crucible, komanso imachepetsa kutaya mphamvu, ndikupangitsa kuti izichita bwino kwambiri pakupanga mafakitale.

 

Zinayi. Mapulogalamu aukadaulo komanso mayendedwe okhathamiritsa

Kuchita bwino kwambiri kwasilicon carbide graphite crucible muzochita zogwiritsiridwa ntchito makamaka zimagwiritsa ntchito mphamvu zotentha komanso kukhazikika kwazinthu. Zotsatirazi ndi zina mwazinthu zatsopano komanso mayendedwe amtsogolo:

 

Kusungunula zitsulo zotentha kwambiri: Popanga zitsulo zotentha kwambiri,silicon carbide graphite crucible akhoza bwino kusintha smelting liwiro ndi khalidwe. Mwachitsanzo, pakusungunula chitsulo chosungunula, mkuwa, aluminiyamu ndi zitsulo zina, kutentha kwapamwamba kwa crucible ndi kukana kwa dzimbiri kumathandizira kuti zisawonongeke ndi zitsulo zosungunuka, kuonetsetsa bata ndi chitetezo cha njira yosungunulira.

 

High-temperature chemical reaction chombo:silicon carbide graphite crucible angagwiritsidwe ntchito ngati chidebe abwino kwa mkulu-kutentha mankhwala zimachitikira. Mwachitsanzo, mumakampani opanga mankhwala, zotengera zina zomwe zimatentha kwambiri zimafunikira zombo zokhazikika komanso zosagwira dzimbiri, komanso mawonekedwe asilicon carbide graphite crucibleamakwaniritsa zofunikira izi.

 

Kupanga zida zatsopano: Pakufufuza ndi kupanga zida zatsopano,silicon carbide graphite crucible angagwiritsidwe ntchito ngati zida zofunika kwa mkulu-kutentha processing ndi kaphatikizidwe. Kukhazikika kwake kokhazikika komanso kuyendetsa bwino kwamafuta kumapereka malo abwino oyesera ndikulimbikitsa kupanga zida zatsopano.

 

Tekinoloje yopulumutsa mphamvu komanso yochepetsera mpweya: Mwa kukhathamiritsa momwe zinthu zimachitikira ndi ma chemical reactionsilicon carbide graphite crucible, mphamvu yake yotentha imatha kusinthidwanso ndikuchepetsa kugwiritsa ntchito mphamvu. Mwachitsanzo, kuyambika kwa chothandizira mu crucible kumaphunziridwa kuti kuwongolera magwiridwe antchito a redox, potero kuchepetsa nthawi yotentha komanso kugwiritsa ntchito mphamvu.

 

Kuphatikizika ndi kusinthidwa kwazinthu: Kuphatikiza ndi zida zina zogwira ntchito kwambiri, monga kuwonjezera ulusi wa ceramic kapena nanomatadium, kumatha kukulitsa kukana kutentha ndi mphamvu zamakina.silicon carbide graphite crucibles. Kuphatikiza apo, kudzera munjira zosinthira monga chithandizo cha zokutira pamwamba, kukana kwa dzimbiri ndi kuwongolera kwamafuta kwa crucible kumatha kupititsidwa patsogolo.

 

5. Mapeto ndi ziyembekezo zamtsogolo

Endothermic mfundo yasilicon carbide graphite crucible ndi kugwiritsa ntchito bwino mphamvu ya kutentha kutengera zinthu zake zakuthupi komanso momwe zimagwirira ntchito. Kumvetsetsa ndi kukhathamiritsa mfundozi ndikofunikira kwambiri pakuwongolera kupanga bwino kwa mafakitale ndi kafukufuku wazinthu. M'tsogolomu, ndi kupita patsogolo kosalekeza kwa teknoloji ndi chitukuko chosalekeza cha zipangizo zatsopano,silicon carbide graphite crucibles akuyembekezeredwa kuchita mbali yofunika kwambiri m'madera otentha kwambiri.

 

Kupyolera muzatsopano mosalekeza ndi kukhathamiritsa,silicon carbide graphite crucible idzapitiriza kupititsa patsogolo ntchito zake ndikuyendetsa chitukuko cha mafakitale okhudzana nawo. Pakusungunuka kwazitsulo zotentha kwambiri, kutentha kwambiri kwamankhwala, ndi chitukuko chatsopano chazinthu,silicon carbide graphite crucible chidzakhala chida chofunikira kwambiri, chothandizira makampani amakono ndi kafukufuku wasayansi kufika pachimake chatsopano.