High alumina brick for new type lime kiln

The secondary high alumina brick is a kind of refractory material, the main component of this refractory brick is Al2O3.

Haddii nuxurka Al2O3 uu ka sarreeyo 90%, waxaa la yiraahdaa leben corundum. Ilaha kala duwan awgood, heerarka qaranku gebi ahaanba isma waafaqsana. Tusaale ahaan, waddamada Yurub waxay dejiyeen xadka hoose ee nuxurka Al2O3 ee wax-ka-beddelidda alumina sare 42%. Dalka Shiinaha, marka loo eego nuxurka Al2O3 ee lebenkii alumina ee sare, badiyaa wuxuu u qaybsan yahay saddex darajo: Heerka I──Al2O3 oo ka kooban> 75%; Waxa ku jira Fasalka II──Al2O3 waa 60 ～ 75%; Waxa ku jira Darajada IIIAl2O3 waa 48 ～ 60%.

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a. Dib -u -noqoshada

Dib-u-dhiska lebenka alumina ee sarreeya ayaa ka sarreeya kan lebenkii dhoobada ahaa iyo lebenkii silica-silica ahaa, oo gaaray 1750 ~ 1790 ℃, oo ah alaab wax-u-diid ah oo tayo sare leh.

b. Xamuulka heerkulka jilcinta

Sababtoo ah alaabada alumina-ga sare leh waxay leeyihiin Al2O3 sare, wasakh yari, iyo jirro galaas oo aan la karin karin, heerkulka jilicsanaanta culeyska ayaa ka sarreeya kan lebenkii dhoobada ahaa. Si kastaba ha ahaatee, sababta oo ah kiristaalo mullite ma samaysmaan qaab -dhismeed shabakad, heerkulka jilicsanaanta culeysku weli ma sarreeyo kan lebenka silica ah.

c. Iska caabin adag

Lebenkii aluminaha sare lahaa Al2O3 dheeraad ah, kaas oo u dhow agab cillad dhexdhexaad ah, oo iska caabin kara nabaad -guurka ee wasakhda aashitada iyo slag alkaline. Sababtoo ah ka mid noqoshada SiO2, kartida iska caabbinta wasakhda alkaline ayaa ka daciifsan tii dhoobada aashitada.

isticmaalka

Inta badan waxaa loo adeegsadaa dahaarka foornooyinka qarxa, foornooyinka qarxa kulul, dhalooyinka foornada korontada, foornooyinka qarxa, foornooyinka reverberatory, iyo shoolada Rotary. Intaa waxaa dheer, lebenkii alumina ee sare ayaa sidoo kale si ballaaran loo adeegsadaa sida lebenkii hubiyaha dib -u -cusboonaysiinta dabka ee furan, baloogyada nidaamyada shubista, lebiska biiyaha, iwm. Si kastaba ha ahaatee, qiimaha lebenka alumina ee sarreeya ayaa ka sarreeya kan lebenkii dhoobada ahaa, sidaa darteed muhiim ma aha in la isticmaalo lebenkii alumina sare ee lebenkii dhoobadu ay buuxin karaan shuruudaha.

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