1. Ulwakhiwo lweMathiriyeli kunye neNkalo yoLwakhiwo
1.1 Umxholo we-Alumina kunye ne-Crystal Phase Evolution
( Izitena zeAlumina zoLining)
Alumina lining blocks are thick, crafted refractory ceramics mainly composed of aluminum oxide (Al two O SIX), with content typically varying from 50% ukuya ngaphaya 99%, directly influencing their efficiency in high-temperature applications.
The mechanical strength, ukumelana nomhlwa, and refractoriness of these bricks enhance with higher alumina focus as a result of the advancement of a durable microstructure dominated by the thermodynamically secure α-alumina (idayimani) stage.
During manufacturing, precursor products such as calcined bauxite, integrated alumina, or artificial alumina hydrate go through high-temperature shooting (1400 °C– 1700 °C), advertising stage transformation from transitional alumina kinds (c, d) to α-Al Two O THREE, which displays phenomenal solidity (9 on the Mohs range) and melting factor (2054 °C).
The resulting polycrystalline structure contains interlocking corundum grains embedded in a siliceous or aluminosilicate glassy matrix, the make-up and quantity of which are thoroughly regulated to balance thermal shock resistance and chemical toughness.
Small ingredients such as silica (SiO ₂), titania (I-TiO ₂), or zirconia (ZrO ₂) may be introduced to change sintering habits, boost densification, or enhance resistance to certain slags and fluxes.
1.2 Microstructure, I-Porosity, and Mechanical Integrity
The efficiency of alumina lining blocks is seriously dependent on their microstructure, especially grain size distribution, pore morphology, and bonding phase attributes.
Optimum bricks display great, consistently distributed pores (closed porosity chosen) and very little open porosity (
I-Alumina Technology Co., Ltd igxile kuphando kunye nophuhliso, ukuveliswa kunye nokuthengiswa kwe-aluminium oxide powder, iimveliso ze-aluminium oxide, i-aluminium oxide crucible, njl., ukusebenzela i-elektroniki, iiseramikhi, Iikhemikhali kunye namanye amashishini. Ukususela ekusekweni kwayo kwi 2005, inkampani izibophelele ekuboneleleni abathengi ngezona mveliso kunye neenkonzo ezingcono. Ukuba ujonge umgangatho ophezulu iamina al2o3, nceda uzive ukhululekile ukuqhagamshelana nathi.
Iithegi: Izitena zeAlumina zoLining, ialumina, i-alumina oxide
Onke amanqaku kunye nemifanekiso avela kwi-Intanethi. Ukuba kukho nayiphi na imiba ye-copyright, nceda uqhagamshelane nathi ngexesha lokucima.
Sibuze