Njengenaliti zeMullite eziNyibilikisayo, ezibonelela ngeNdawo yokuNyibilika ePhantsi, uKwandiswa kweThermal eBuyiselwayo eBuyiselwayo kunye nokuchasana okugqwesileyo kumothuko wobushushu kwiMullite eFused.

Corundum mullite
Ucoceko oluphezulu lwe-mullite edibeneyo
Electro-fused mullite

Ingcaciso emfutshane

I-Fused Mullite iveliswa yiBayer process alumina kunye nesanti yequartz ecocekileyo ngelixa idibanisa kwiziko lombane elikhulu kakhulu.

Inomxholo ophezulu weekristale ze-mullite ezifana nenaliti ezinikezela indawo ephezulu yokunyibilika, ukwanda kwe-thermal okubuyisela umva kunye nokumelana okugqwesileyo kumothuko we-thermal, ukuguqulwa komthwalo, kunye nokubola kweekhemikhali kwiqondo lokushisa eliphezulu.

QHAGAMSHELANA NGOKU

iFused Mullite 75

Izinto		Iyunithi	Isalathiso	Isiqhelo
Ukwakhiwa kweekhemikhali	Al₂O₃	%	73.00-77.00	73.90
	SiO₂	%	22.00-29.00	24.06
	Fe₂O₃	%	0.4 ubuninzi(Izohlwayo 0.5% max)	0.19
	K2O+Na₂O	%	0.40ubuninzi	0.16
	CaO+MgO	%	0.1% ubuninzi	0.05
Ukuchasa		℃	1850min
Unizi lolwapho kuyiwa khona		g/cm³	2.90min	3.1
Umxholo wesigaba seglasi		%	10 ubuninzi
3Al₂O₃.2SiO₂Isigaba		%	90min

F-Fused; M-Mullite

iFused Mullite 70

Izinto		Iyunithi	Isalathiso	Isiqhelo
Ukwakhiwa kweekhemikhali	Al₂O₃	%	69.00-73.00	70.33
	SiO₂	%	26.00-32.00	27.45
	Fe₂O₃	%	0.6 ubuninzi(Izohlwayo 0.7% max)	0.23
	K2O+Na₂O	%	0.50ubuninzi	0.28
	CaO+MgO	%	0.2% ubuninzi	0.09
Ukuchasa		℃	1850min
Unizi lolwapho kuyiwa khona		g/cm³	2.90min	3.08
Umxholo wesigaba seglasi		%	15 ubuninzi
3Al₂O₃.2SiO₂Isigaba		%	85min

Inkqubo yeMveliso

I-Fused Mullite iveliswa yiBayer process alumina kunye nesanti yequartz ecocekileyo ngelixa idibanisa kwiziko lombane elikhulu kakhulu.

Isicelo

Isetyenziswa ngokubanzi njengemathiriyeli ekrwada kwimigangatho ephezulu yokuchasa, njengezitena zokufakwa kwizitena zeglasi kunye nezitena ezisetyenziswa kwiziko lomoya oshushu kwishishini lentsimbi.

Ikwasetyenziswa kwi-Ceramic kiln kunye neshishini lepetrochemical kunye nezinye izicelo ezininzi.

Izohlwayo ze-Fused Mullite zisetyenziswa kwiingubo ze-Foundry ngenxa yokuxhathisa ukothuka kwe-thermal kunye neempawu ezingamanzi.

Iimbonakalo

• Ukuzinza okuphezulu kwe-thermal
• Ukwandiswa kwe-thermal ebuyiselwa umva ephantsi
• Ukumelana nokuhlaselwa kwe-slag kumaqondo obushushu aphezulu
• Ukwakheka kweekhemikhali okuzinzileyo

I-Mullite, naluphi na uhlobo lweminerali enqabileyo equkethe i-aluminium silicate (3Al2O3 · 2SiO2). Yenzeka ekudubuleni izixhobo eziluhlaza zealuminosilicate kwaye yeyona nto ibalulekileyo kwi-ceramic whiteware, iiporcelain, kunye nobushushu obuphezulu be-insulating kunye nezixhobo ezichasayo. Izinto ezenziweyo, ezifana ne-mullite, ezinomlinganiselo we-alumina-silica ubuncinane we-3:2 aziyi kunyibilika ngaphantsi kwe-1,810° C (3,290° F), kanti ezo ezinomlinganiselo ophantsi zinyibilika ngokuyinxenye kumaqondo obushushu asezantsi njenge-1,545° C (2,813° F).

I-mullite yendalo yafunyanwa imhlophe, iikristale ezinde kwiSiqithi saseMull, Inner Hebrides, eScot. Iqatshelwe kuphela kwiindawo ezivaliweyo ze-argillaceous (clayey) kumatye angenayo igneous, imeko ebonisa amaqondo obushushu aphezulu kakhulu okwakheka.

Ngaphandle kokubaluleka kwayo kwiiseramics eziqhelekileyo, i-mullite iye yaba lukhetho lwemathiriyeli yolwakhiwo oluphezulu kunye neekeramics ezisebenzayo ngenxa yeempawu zayo ezithandekayo. Ezinye iipropathi ezibalaseleyo ze-mullite kukwandiswa kwe-thermal ephantsi, ukuhanjiswa kwe-thermal ephantsi, ukuxhathisa okugqwesileyo kwe-creep, amandla obushushu obuphezulu, kunye nokuzinza okuhle kweekhemikhali. Indlela yokwenza i-mullite ixhomekeke kwindlela yokudibanisa i-alumina- kunye ne-silica equlethe i-reactants. Ikwanxulumene nobushushu apho ukusabela kukhokelela ekubunjweni kwe-mullite (ubushushu be-mullitisation). Amaqondo obushushu okuxutywa kuxelwe ukuba ohluka ukuya kutsho kumakhulu aliqela ngokuxhomekeke kwindlela yokudibanisa esetyenziswayo.