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Jinan Linquan Import And Export Co., Ltd.
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air brick used for steel ladle bottom blowing
The bottom blow porous brick is the weak part of ladle refractory,which is the primary factor affects ladle life.our products can satisfy kinds of ladle smelting craft request.
Chemical and Physical Properties | (Well block) | (purging plug) | |
(Al2O3+Cr2O3+MgO)% ≥ | ≥ 90 | ≥ 92 | |
Bulk density g\cm3 | ≥3.0 | ≥ 2.9 | |
Apparent Porosity % | ≤ 15 | ≤ 20 | |
Cold crushing strength Mpa | 110ºC*24h | ≥ 60.0 | ≥ 80.0 |
1500ºC*3h | ≥ 100.0 | ≥ 80.0 | |
Refractoriness under load : ºC | ≥ 1680 | ≥ 1680 | |
Modulus of rupture 1400ºC *1h Mpa Mpa | ≥ 15.0 | ≥ 15.0 | |
Linear change 1500ºC*3h % | ±0.2 | ±0.2 | |
air permeability, m3/hour at P=4 bar | 30M3/H | ||