Specifications

1.Al2O3:65-80%
2.Low Fe2O3
3.High cold crushing strength
4.Good erosion resistance
5.Good wear resistance

Unfired  Brick is produced with selected bauxite chamotte by advanced process and strict quality control.It's chemical characteristic tend to neutral .its capability of acid-fast erosion of acid slag or alkaline slag is better than clay brick and silicon brick.

Characteristics:

1.Good erosion resistance
2.Good thermal shock resistance
3.Good wear resistance

4.High cold crushing strength

5.Excellent high temperature mechanics and chemical corrosion resistance.

6.Refractoriness under load is normally around 1420°c-1530°c which is better than fireclay brick and silica brick.

Tech Data.

Items	NMZ-1	NMZ-2	NMZ-3
Al2O3%	>60	>70	>80
Normal temperature crushing strength(Mpa)	>65	>75	>125
Normal temperature rupture strength(Mpa)	>10	>12	>17
Thermal shock resistance(times)(900°Cwater cooling)	20	25	50
Wear resistance(ASTMc-704)	9	8	6
Heat conductivity coefficient(1000°C) W/m.k	1.5	15	1.5
Max working temperature °C	1400	1500	1600
Performance of application	High strength in medium temperature,stable bulk in high temperature,wear resistance,slag erosion resistance.