Fire clay refractory brick
Fire clay refractory brick with super-low thermal conductivity add foaming agent and stabilizing agent into the slurry confected by refractory raw materials, such as alumina powder and refractory clay. after mixing them, the refractory slurry evenly adsorbs around the foams, and spherical proes are formed after being dried and fired. The six faces are all cut by machine so that the sizes are accurate.

Applications
Clay bricks are mainly used in the low temperature parts, including blast furnaces and hot blast furnaces, waste incinerators and glass melting furnaces. Due to the scale-up of a variety of industrial furnaces and severity of operating conditions, super dense clay bricks that made of more refined chamotte being calcinated at high temperature are applied more than before.
It's popular in the following furnaces:
1. Blast furnaces and hot blast furnaces
2. Coke oven
3. Glass melting furnaces
Specification

Item		N-1	N-2a	N-2b	N-3a	N-3b	N-4	N-5	N-6
Refractoriness	SK	31	30	30	29	29	28	27	23
	C	1750	1730	1730	1710	1710	1690	1670	1580
Chemical Composition	Al2O3	40	39	34	34	32	32	31	31
	Fe2O3	2.1	2.1	2.3	2.3	2.5	2.5	2.5	2.5
Apparent Porosity%		22	24	26	24	26	24	26	28
Bulk Density g/cm3		2.15	2.10	2.10	2.05	2.05	2.05	2.00	2.00
Cold Crushing Strength Mpa		30	25	20	20	15	20	15	15
0.2Mpa Refractoriness  under Load T0.6 C		1400	1350	1350	1320	1320	1300	1300	1300
Reheating  Linear  Change(%)	1400C  2hour	+0.1 - -0.4	+0.1 - -0.5	+0.2 - -0.5
	1350C  2hour				+0.2 - -0.5	+0.2 - -0.5	+0.2 - -0.5	+0.2 - -0.5

 
We also can supply other refractory bricks, please feel free to contact us.