Izakhono zokukhetha ze lightweight refractory insulation izitena

Izitena ezilula zokugquma i-thermal zilula ngobunzima. Zingasetyenziselwa kwiindawo zokugquma i-thermal ukugquma kunye nokunciphisa ingxolo. Ukongeza, ukufakwa kwe-thermal kunokunciphisa ukusetyenziswa kwe-fuel ye-oven kunye nokunciphisa iindleko zokuvelisa. Ubungakanani obukhulu bezitena zokufakelwa kwe-thermal ezikhaphukhaphu zibandakanya izitena zodongwe ezikhaphukhaphu kunye nezitena ezikhaphukhaphu eziphezulu ze-alumina, kodwa ungakhetha njani izitena zodongwe ezikhaphukhaphu kunye nezitena ezikhaphukhaphu eziphezulu ze-alumina? Kakade ke, kukho izakhono ezithile.

Ukukhethwa kwezitena zokufakela i-refractory lightweight refractory kufuneka kuqala kuthathelwe ingqalelo amandla, umxholo we-aluminium, ukuxhathisa inyikima kunye nokungangeni. Xa ukhetha izitena ezikhanyelayo ezilula, kufuneka siqale siqonde iimpawu zabo. Umxholo we-aluminium wezitena zodongwe ezikhanyayo malunga ne-30-35%. Phantsi kweemeko eziqhelekileyo, ukuqina yi-3-4Mpa.

Unokujonga izitena zodongwe ezilula kwangaphambili. Ngokuqinisekileyo, ubuchule bokukhetha bunokwaziwa ukusuka kumphezulu okanye iinkcukacha ezithile.

Xa ukhetha izitena zodongwe ezilula, jonga kuqala ukuba ubuso besitena esilula bufana nombala. Ukuba umbala ufana, kuthetha ukuba ubushushu bokudubula buzinzile kwaye ukutshitshiswa kwe-thermal kuya kuba kuhle. Emva koko bamba umgca wesitena ngesandla sakho ukuze ubone ukuba amasuntswana omgubo ayawa. Ukuba ayiwi emva kokucinezela kanzima, oko kuthetha ukuba amandla angadlula i-3Mpa. Emva koko vula iqhekeza lesitena sodongwe esilula ukujonga ukuba sisontwe. Ukuba isandwich ibonakala ityheli okanye ibomvu, oko kuthetha ukuba isitena sodongwe esikhanyayo asizange sitshise kwaye ukunyanzeliswa akulunganga. Ukuba ukuvulwa kufana nomphezulu, kuthetha ukuba amandla kunye nokuxhatshazwa kokutshatyalaliswa kwesitena sodongwe esilula kulungile, kwaye unokuthenga ngokuzithemba.

Izitena ze-alumina ezikhaphukhaphu ezikhaphukhaphu zikhaphukhaphu kubunzima kwaye zinokuxhathisa ubushushu obuphezulu kwindawo yokugquma i-thermal. Zixabisa kakhulu kunezitena zodongwe ezilula, kodwa zikwasetyenziswa kumaqondo obushushu aphezulu. Inentsebenzo engcono yokugquma i-thermal kwaye isebenza ngokuphindwe ka-10 kune-concrete ye-thermal yokugquma eqhelekileyo. Umxholo we-aluminium we-lightweight high-alumina izitena zingaphezulu kwe-40-45%, amandla angama-6-7Mpa, kwaye umbala umhlophe kunobumba obuncinane. Ewe, enye kukulinganisa ubungakanani ukubona ukuba iyadibana noluhlu lolawulo lobungakanani bezitena eziza kusetyenziswa. Emva koko vula icandelo lesitena se-alumina ekhaphukhaphu ekhaphukhaphu ukuze ubone ukuba i-sintered ngokucokisekileyo. Ukuba isitena sokukhanya kwe-alumina ephezulu sinombala ofanayo ngaphakathi nangaphandle, kubonisa ukuba amandla kunye nokusebenza kokugcina ubushushu kulungile.

Ngokuqinisekileyo, ukukhethwa kwezi zitena zokunciphisa ukukhanya kufuna ukuqonda izinto eziphikisayo. Ukuba ayicacanga kakhulu, yindlela yokuhlola, kodwa ezinye zeengcebiso ezingentla zinokukhetha indlela enembile kwaye elula yezitena ezikhanyelayo ezikhanyelayo.