Yintoni umahluko phakathi isitena esichasayo kunye nesitena esikhaphukhaphu?

Umsebenzi oyintloko wezitena ezikhaphukhaphu kukugcina ubushushu bokufudumala, ukunciphisa ukulahleka kobushushu, kunye nokuphucula ukusebenza kakuhle kwe-thermal. Linyathelo lobuchwephesha lenzululwazi nelisebenzayo lokonga amandla elinokucothisa isantya sogqithiso lobushushu.

Phakathi kwezinto eziphikisayo, izitena ezikhaphukhaphu kunye nezitena eziphikisayo (ngaphandle kweempawu ze-thermal insulation) ziyizinto ezinqabileyo ezisetyenziswa ngokubanzi. Nangona kunjalo, kukho umahluko omkhulu phakathi kwezitena ezikhaphukhaphu kunye nezitena eziphikisayo.

I-1, ukusebenza kokugcina ubushushu

I-thermal conductivity yezitena ezikhaphukhaphu ngokubanzi yi-0.2～0.4 (ubushushu obuphakathi 350±25℃) w/mk, kunye ne-thermal conductivity yezitena eziphikisayo zikhulu kune-1.0 (i-avareji yokushisa 350±25℃) w/mk. Ngoko ke, i-thermal insulation yezitena ezikhaphukhaphu Ukusebenza ngcono kunezitena eziphikisayo.

2, ukumelana nomlilo

Umda wokumelana nomlilo wezitena ezikhanyayo ungaphantsi kwe-1400 ℃, kwaye umda wokumelana nomlilo wezitena eziphikisayo ungaphezulu kwe-1400 ℃.

3, ukuxinana

Ubuninzi bezitena ezilula ngu-0.8-1.0g / cm3, ngelixa ubuninzi bezitena eziphikisayo zingaphezulu kwe-2.0g / cm3.

Ngokuqhelekileyo, izitena ezikhaphukhaphu azibonakali ngokuthe ngqo kwidangatye, ukushisa okuphezulu kunyibilika kunye neegesi zekhemikhali. Ngokwezixhobo ezahlukeneyo kunye neempawu ezibonakalayo kunye neekhemikhali, izitena eziphikisayo zingasetyenziselwa ukuxhathisa ukukhukuliseka okuhlukeneyo kokubhaka amadangatye ngokuthe ngqo kunye nobushushu obuphezulu bezinto ezityhidiweyo eziko.

Ukusuka kwindawo yokujonga ububanzi bokusetyenziswa, ukuphindaphinda kwesicelo sezitena eziphikisayo zikhulu kakhulu kunezitena ezilula. Nangona kunjalo, kwiminyaka yakutshanje, ngolwazi olwandisiweyo lokukhuselwa kwendalo kunye nokonga amandla kunye nokusetyenziswa kobushushu obuphezulu bokushisa, izitena ezilula zisetyenziswe ngokubanzi ekuthengeni i-kiln masonry. Ngokukodwa, kukho ezininzi iintlobo ezintsha zezitena ezikhaphukhaphu: izitena ze-mullite ezikhaphukhaphu, izitena ze-alumina ezilula, kunye nezitena zodongwe ezilula.