Tall aluminous brick and brick of heatproof shake aluminous zirconium are the fireproof data that is used at furnace of kiln of high temperature industry, but they differ somewhat in composition, function and applied respect. It is the labor to these two kinds of material below:
1.Composition of tall aluminous brick and function: Bases: The bases of tall aluminous brick is alumina (Al₂O₃ ) , content is commonly between 48%-80% . They wait by alumina of bauxite, synthesis for raw material, through burden, shape, dry, firing wait for craft to make. Fireproof degree: Because Al₂O₃ content is higher, of tall aluminous brick fireproof degree can amount to 1700 ℃ above normally, have good high temperature resistant function. Fight broken bits sex: Tall aluminous brick is had better fight acidity and alkalescent slag to erode ability, in applying to high temperature environment anti-corrosive demand. Fight thermal shock sex: The heatproof shake sex of tall aluminous brick is opposite weaker, below the circumstance that fluctuates in fast temperature especially, produce thermal shock crackle easily. Manufacture technology through optimizing nevertheless, join certain and auxiliary material, can raise its to fight thermal shock function.
Apply setting: Tall aluminous brick applies extensively at furnace of the blast furnace in iron and steel industry, hot-blast stove, electric stove, puddling to wait. The liner data that still is used at the high temperature environment such as equipment of kiln of frit of cement rotary kiln, glass, petrifaction to fall. Take brick of rank edition tall aluminium: As the promotion to demand of high temperature industry, tall aluminous brick undertook optimizing in the following respects:
Add minim zirconia (ZrO₂ ) or magnesian (MgO) : This can promote its heatproof shake function and fight erode ability. Cause density craft high: Through raising alumina purity, increase firing the method such as temperature, production gives higher density, more the tall aluminous brick of high strenth, suit to be used in harsher high temperature environment.
2.Composition of brick of heatproof shake aluminous zirconium and function: Bases: Brick of heatproof shake aluminous zirconium by ** alumina (Al₂O₃ ) with zirconia (ZrO₂ ) ** composition. The affiliation of zirconia improved the heatproof shake performance of bricky body significantly, because zirconia has more expensive hot coefficient of expansion, can absorb dispersive thermal stress. Fireproof degree: Of aluminous zirconium brick fireproof degree can achieve 1800 ℃ above normally, because the affiliation of zirconia makes,its maintain taller structural stability below high temperature. Fight thermal shock sex: This is the main characteristic of aluminous zirconium brick. Zirconia photograph changes can rising quickly drop in temperature thermal shock energy is drawn in the process, avoid to crackle is generated or expand. Accordingly, aluminous zirconium brick fights thermal shock ability mediumly in harsh hot environment remarkable excel is common tall aluminous brick. Fight chemical aggressivity: Zirconia is had at the same time stronger fight soda acid aggressivity, suit to be in particularly have strong use below the high temperature environment that corrodes medium existence.
Apply setting: Steely industry: The position of high temperature key that aluminous zirconium brick basically uses in steely smelt, if join the position such as mouth of casting system, tapping, hearth, can effective counteractive high temperature is pounded. Vitreous industry: In vitreous kiln furnace, aluminous zirconium brick is used extensively at the lining of fused area, because its are able to bear or endure high,bad temper and heatproof shake function can answer fast temperature to fluctuate. Potter course of study: Be versed in be used in equipment in the heat of kiln furnace, can answer relapsing heating and cooling process.
Comparative summary: Composition: Tall aluminous brick basically is comprised by alumina, and brick of heatproof shake aluminous zirconium added zirconia to fight thermal shock sex in order to promote. Fight thermal shock sex: Brick of heatproof shake aluminous zirconium because of zirconia join, rising quickly drop in temperature the performance below the circumstance is more superior, and tall aluminous brick is opposite weaker. Fireproof function: Those who fight brick of thermal shock aluminous zirconium is fireproof degree tallish, suit to be used below high temperature environment more. Use a field: Tall aluminous brick applies to the high temperature in the industry such as steely, cement and stabler environment; Brick of heatproof shake aluminous zirconium is multi-purpose the setting that at temperature change acuteness, need fights chemistry to corrode, be like vitreous kiln furnace and equipment of high temperature smelt.
These two kinds of material are producing crucial effect below different industrial environment, basis application setting chooses right fireproof stuff to be able to enhance the life of equipment and security significantly.
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