Smelt metal mark changes the requirement of index to the manage of magnesian carbon brick
YB4074-91 of smelt metal mark presses magnesian carbon brick carbolic content cent to be 3 kinds, every kinds change index cent to be 3 brands normally: MT10A, MT10B, MT10C; MT14A, MT14B, MT14C; MT18A, MT18B, MT18C. Bricky manage changes index to see watch 6-11.
Smelt metal mark changes the requirement of index to the manage of magnesian carbon brick
Smelt metal mark reachs the requirement of the exterior to the permissible variation in dimension of magnesian carbon brick
Is YB4074-91 of smelt metal mark right the permissible variation in dimension of magnesian carbon brick (Mm) is the requirement as follows: ? Ji?lt;200, ± 1; 201〜300, ± 1.5; > 300, ± 2; Screwy ≤ 500, <1; > 500, < 1.5; <6 of vertex damage deepness, <4 of edge damage deepness, width ≤ the crackle of 0.25 its length is not restricted, width > the crackle of 0.25 forbids to have, forbid to section layer is cracked.
How to prevent aluminous carbon the oxidation of the carbon in refractory products
In aluminous carbon the exterior besmear of refractory products adds a coating, can prevent carbolic combustion. This coating is the vitreous condition stock that contains the flux such as K2O, Na2O, its chemistry is comprised as follows: AL2O3>20% , siO2>60% , r2O10〜14% , accretion 5〜10% . The beautiful density of coating is 1.6〜1.8g/cm3, coating granuality: The fine pink 70〜90% of <0.04mm.
Besmear adds a process: Keep clear of the dirt of surface of the goods that be added by besmear clean, besmear equably next brush paint. It is advisable that coating ply is controlled with 0.2mm. The goods classics that besmear adds coating 1000 ℃ are roast, it is better to can make goods is had fight oxidation function.
Contain carbon the development of side of fireproof data products
Since 80 time, magnesian carbon brick already achieved very big result in the use on aerobic converter. In recent years, the magnesium that contain carbon dolomite brick has profit as a result of clean to refine steel, already caused those who make multilateral home to take seriously. My state-owned and rich water chestnut magnesian stone and dolomite resource, while 90 time are developing magnesian carbon brick, carbolic brick also should get magnesian dolomite develop accordingly.
Fireproof material field is used in Lian Zhu, carbon combines goods to already had very great progress. However, carbolic union goods fights oxidisability still poorer, and have certain carburet effect to steel fluid. So, the oxide with fight the function such as oxidisability sex of the high temperature intensity, denaturation that fight squirm, heatproof shake, better and blame oxide composite material, for example Molaishi and one SiC mix zirconium corundum composite material will have BN to develop prospect capaciously.
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