Setene sa mullite insulation ke bokae?

Letoto la JM la litene tsa mullite insulation li na le JM26, JM28, JM30, JM32 ho latela mocheso oa tšebeliso. Theko ea ‘maraka ea sengoathoana ka seng ke li-yuan tse seng kae ka yuan. Theko e tla fetoha ho latela litaba tsa matšoao a fapaneng le tlhoko. Mabapi le litaba tse amanang le hore na setene sa ho koala se bokae, boleng bo khethehileng bo lokela ho etsoa qeto ka kopanelo ka mor’a ho buisana le moetsi oa refractory.

Setene sa ho kenngoa ha Mullite ke lisebelisoa tse phahameng tsa alumina refractory tse nang le mullite (3Al2O3 · 2SiO2) e le karolo e ka sehloohong ea kristale. Ka kakaretso, litaba tsa alumina li pakeng tsa 65% le 75%. Ho phaella ho mullite, motsoako oa liminerale o na le karolo e nyenyane ea karolo ea khalase le cristobalite e nang le likarolo tse tlaase tsa alumina; lintho tse phahameng tsa alumina li boetse li na le palo e nyenyane ea corundum. Litene tsa mullite tse kenyang mokelikeli li ka sebelisoa ka ho toba bakeng sa lesela la lionto tsa mocheso o phahameng, ‘me li ‘nile tsa sebelisoa ka ho pharaletseng ho li-shuttle kilns, li-roller kilns, likhalase le liipone tsa petrochemical.

1. Litšobotsi tsa sehlahisoa sa litene tsa mullite insulation:

1. Thermal conductivity e tlaase le phello e ntle ea ho kenya mocheso oa mocheso;

2. Lintho tse fokolang tse sa hloekang li na le lebokose la tšepe le tlaase haholo la tšepe ea alkali le lintho tse ling tsa oxide, ka hona, ho hanyetsa ho phahameng; lihlahisoa tse phahameng tsa aluminium li etsa hore li boloke ts’ebetso e ntle moeeng o fokolang;

3. Setene sa “mullite insulation” se na le ho qhibiliha ha mocheso o tlase. Ka lebaka la conductivity e tlaase ea mocheso, letoto la mullite la litene tse fokolang tse bobebe li bokella matla a fokolang a mocheso, ‘me phello ea ho boloka matla e totobetse ts’ebetsong ea nakoana;

4. Boholo ba ponahalo, ho potlakisa masonry, ho fokotsa bongata ba seretse sa refractory, ho netefatsa matla le botsitso ba masonry, ka hona ho lelefatsa bophelo ba lesela;

5. Litene tsa li-mullite li na le matla a phahameng a ho hatella a chesang;

6. Litene tsa mullite insulation li ka etsoa libopeho tse khethehileng ho fokotsa palo ea litene le manonyeletso.

2. Khethollo ea litene tsa mullite insulation:

Ho latela ts’ebetso ea eona ea tlhahiso, ho na le mefuta e ‘meli ea litene tsa mullite tse bobebe: litene tsa sintered mullite le litene tse kopaneng tsa mullite:

1. Litene tsa sintered mullite li entsoe ka aluminium e phahameng ea bauxite clinker e le thepa e ka sehloohong e tala, ho eketsa letsopa le lenyenyane kapa bauxite e tala e le ntho e tlamang, le ho theha le ho thunya.

2. Litene tsa mullite tse kopantsoeng li entsoe ka alumina e phahameng, alumina ea indasteri le letsopa le refractory e le lisebelisoa tse tala, ‘me mashala kapa likaroloana tse ntle tsa coke li kenngoa e le lisebelisoa tse fokotsang. Ka mor’a ho bōptjoa, li etsoa ka ho fokotsa ho qhibiliha ha motlakase.

Ts’ebetso le ts’ebeliso ea setene sa mullite insulation: refractoriness e phahameng, e ka fihlang holimo ho 1790 ℃. Mocheso oa ho qala oa ho nolofatsa mojaro ke 1600 ~ 1700℃. Matla a hatellang mocheso oa kamore ke 70 ~ 260MPa. Ho hanyetsa mocheso o motle oa mocheso. Ho na le mefuta e ‘meli ea litene tsa sintered mullite le litene tse kopantsoeng tsa mullite. Litene tsa sintered mullite li entsoe ka aluminium e phahameng ea bauxite clinker e le thepa e ka sehloohong e tala, e eketsang palo e nyenyane ea letsopa kapa bauxite e tala e le setlamo, le ho theha le ho thunya. Litene tsa mullite tse kopantsoeng li sebelisa alumina e phahameng, alumina ea indasteri le letsopa le refractory e le lisebelisoa tse tala, li eketsa mashala kapa likaroloana tse ntle tsa coke e le lisebelisoa tse fokotsang, ‘me li etsoa ka mokhoa oa ho fokotsa fusion ka mor’a ho bōptjoa. The crystallization ea fused mullite e kholo ho feta ea sintered mullite, ‘me mocheso oa eona oa mocheso oa mocheso o molemo ho feta oa lihlahisoa tsa sintered. Ts’ebetso ea bona ea mocheso o phahameng haholo e ipapisitse le litaba tsa alumina le ho ts’oana ha karolo ea mullite le kabo ea likhalase. Haholo-holo e sebelisoa bakeng sa setofo se chesang se chesang, ‘mele oa sebōpi le tlase, regenerator ea sebōpi se qhibilihang sa khalase, sebōpi sa sintering sa ceramic, lesela la sebōpi sa sebōpi sa sebōpi sa peterole ea ho phatloha, joalo-joalo.