Amakristalu E-Mullite Afana Nenaliti Anikeza Iphuzu Elincibilikayo Eliphezulu, Ukunwetshwa Okushisayo Okuhlehliswa Kahle Okuhle Kakhulu kanye Nokumelana Kahle Nokwethuka Okushisayo Kwe-Mullite Ehlanganisiwe

I-Corundum mullite
I-mullite ehlanganisiwe enobumsulwa obukhulu
I-mullite ehlanganiswe ne-electro

Incazelo emfushane

I-Fused Mullite ikhiqizwa yi-Bayer process alumina kanye nesihlabathi se-quartz esihlanzekile ngenkathi ixubana esithandweni somlilo esikhulukazi sikagesi se-arc.

Inokuqukethwe okuphezulu kwamakristalu e-mullite afana nenaliti anikeza indawo ephezulu yokuncibilika, ukunwebeka okuphansi okubuyiselekayo okubuyiselekayo kanye nokumelana okuhle nokushaqeka okushisayo, ukwakheka ngaphansi komthwalo, kanye nokugqwala kwamakhemikhali ezingeni lokushisa eliphezulu.

XHUMANA MANJE

I-Fused Mullite 75

Izinto		Iyunithi	Inkomba	Okujwayelekile
Ukwakheka kwamakhemikhali	Al₂O₃	%	73.00-77.00	73.90
	SiO₂	%	22.00-29.00	24.06
	Fe₂O₃	%	0.4 ubuningi(Izinhlawulo 0.5%ubuningi)	0.19
	K2O+Na₂O	%	0.40 ubuningi	0.16
	I-CaO+MgO	%	0.1%ubuningi	0.05
I-Refractoriness		℃	1850 imiz
Ukuminyana ngobuningi		g/cm³	2.90min	3.1
Okuqukethwe kwesigaba sengilazi		%	10 ubuningi
3Al₂O₃.2SiO₂Isigaba		%	90 imiz

I-F-Fused; M-Mullite

I-Fused Mullite 70

Izinto		Iyunithi	Inkomba	Okujwayelekile
Ukwakheka kwamakhemikhali	Al₂O₃	%	69.00-73.00	70.33
	SiO₂	%	26.00-32.00	27.45
	Fe₂O₃	%	0.6 ubuningi(Izinhlawulo 0.7%ubuningi)	0.23
	K2O+Na₂O	%	0.50 ubuningi	0.28
	I-CaO+MgO	%	0.2%ubuningi	0.09
I-Refractoriness		℃	1850 imiz
Ukuminyana ngobuningi		g/cm³	2.90min	3.08
Okuqukethwe kwesigaba sengilazi		%	15 ubuningi
3Al₂O₃.2SiO₂Isigaba		%	85 imiz

Inqubo Yokukhiqiza

I-Fused Mullite ikhiqizwa yi-Bayer process alumina kanye nesihlabathi se-quartz esihlanzekile ngenkathi ixubana esithandweni somlilo esikhulukazi sikagesi se-arc.

Isicelo

Isetshenziswa kabanzi njengezinto ezingavuthiwe zokuphikisisa kwebanga eliphakeme, njengezitini zolayini esithandweni somlilo wengilazi nezitini ezisetshenziswa esithandweni somoya oshisayo embonini yensimbi.

Ibuye isetshenziswe embonini ye-Ceramic kiln kanye ne-petrochemical nezinye izinhlelo zokusebenza eziningi.

Izinhlawulo ze-Fused Mullite zisetshenziswa embotsheni ye-Foundry ngenxa yokumelana nokushaqeka okushisayo kanye nezakhiwo ezingamanzi.

Izici

• Ukuzinza okuphezulu kokushisa
• Ukunwetshwa okushisayo okungahlehla okuphansi
• Ukumelana nokuhlaselwa kwe-slag emazingeni okushisa aphezulu
• Ukwakheka kwamakhemikhali okuzinzile

I-Mullite, noma yiluphi uhlobo lwamaminerali angavamile ahlanganisa i-aluminium silicate (3Al2O3 · 2SiO2). Yakheka lapho kuqhunyiswa izinto zokusetshenziswa ze-aluminosilicate futhi iyisakhi esibaluleke kakhulu se-ceramic whiteware, i-porcelains, nezinto ezifaka izinga lokushisa eliphezulu nezingabambeleli. Ukwakheka, okufana ne-mullite, enesilinganiso se-alumina-silica okungenani esingu-3:2 ngeke kuncibilike ngaphansi kuka-1,810° C (3,290° F), kuyilapho lezo ezinesilinganiso esiphansi zincibilika kancane emazingeni okushisa afinyelela ku-1,545° C (2,813°) F).

I-mullite yemvelo yatholwa njengamakristalu amhlophe, amade e-Island of Mull, Inner Hebrides, Scot. Kuye kwaqashelwa kuphela ezindaweni ezivalekile ze-argillaceous (clayey) emadwaleni angenayo igneous, isimo esiphakamisa izinga lokushisa eliphezulu kakhulu lokubunjwa.

Ngaphandle kokubaluleka kwayo kuma-ceramics ajwayelekile, i-mullite isiphenduke into ekhethwayo yezakhi zobumba ezithuthukisiwe nezisebenzayo ngenxa yezakhiwo zayo ezithandekayo. Ezinye izici ezivelele ze-mullite ukunwebeka okushisayo okuphansi, ukuguquguquka okuphansi kwe-thermal, ukumelana okuhle kakhulu kwe-creep, amandla aphezulu okushisa, nokuzinza okuhle kwamakhemikhali. Indlela yokwakheka kwe-mullite incike endleleni yokuhlanganisa ama-reactants aqukethe i-alumina- ne-silica. Kubuye kuhlotshaniswe nezinga lokushisa lapho ukusabela kuholela ekwakhiweni kwe-mullite (ukushisa kwe-mullitisation). Amazinga okushisa okuhlanganisa abikwe ukuthi ayahluka kufika kumakhulu ambalwa amadigri Celsius kuye ngendlela yokuhlanganisa esetshenzisiwe.