How the stand or fall of tall aluminous brick is divisional

Tall aluminous brick is a kind of fireproof material, main by alumina (Al₂O₃ ) the alumina with higher content is made, apply extensively at liner of kiln of high temperature furnace. Divisional the stand or fall of tall aluminous brick basically can undertake assessment from the following respects:


1.The quality of brick of alumina content tall aluminium and alumina content are direct and relevant. Generally speaking, alumina content is higher, the fireproof performance of tall aluminous brick is better. Normally, cent of tall aluminous brick is 3 class:
75 tall aluminous bricks: Al₂O₃ content>Brick of tall aluminium of 75% 2 class: Al₂O₃ content is between 60%-75% brick of 3 class tall aluminium: Al₂O₃ content is between 48%-60% alumina content is higher, fireproof degree, the performance such as corrosion resistance is stronger.
2.Fireproof degree fireproof spending is finger height aluminous brick not fused below high temperature, not the ability of bate. General of tall aluminous brick fireproof degree in 1750 ℃ above. Fireproof degree taller, of the brick high temperature resistant performance is better.
3.Density of bulk density bulk is the quality of unit volume, express with G/cm³ normally. The tall aluminous brick of high volume density has higher mechanical intensity and inferior porosity normally. Generally speaking, bulk density is higher, bricky quality is better.
4.Apparent pore leads apparent pore is the hole scale that interior of finger height aluminous brick exists, express with per cent normally. Apparent pore leads low brick to have better impervious to show gender and corrosion resistance normally. Generally speaking, apparent pore rate is lower, bricky quality is better.
5.Compressive strength compressive strength is the capacity that finger height aluminous brick leaves resistance to destroy in pressure, use MPa normally (million handkerchief) express. Compressive strength is higher, mechanical strength of the brick is better.
6.Fighting thermal shock sex to fight thermal shock sex is finger height aluminous brick in temperature the circumstance of acuteness change leaves counteractive cracked capacity. The brick with heatproof shake good sex is heating repeatedly and in cooling process not easy craze.
7.Corrosion resistance is in actual application, tall aluminous brick is met bring into contact with all sorts of slaggy and gentle style, its corrosion resistance is very accordingly important. Good tall aluminous brick should be able to bear or endure suffer high temperature slag erode.
8.The exterior and dimension go sightseeing outside tall aluminous brick slippery, color is even, flawless, stomatic, flake wait for blemish. In addition, bricky dimension wants accurate, deviation should be inside limit.
Through above of a few respects make an on-the-spot investigation, can assess the quality of tall aluminous brick in the round quite, choose to suit the tall aluminous brick of own demand thereby.