city cat fireclay bricks

Fire clay bricks use clay that including shale, coal gangue such powder as the major raw material, undergoing a series of working procedures as mixture treatment, forming, drying, and roasting. Which are mainly made from chamotte, flint clay and combining clay powder, being high pressure pressed and sintered in high temperature.
Usually inexpensive, Clay Bricks are used to construct outer area of a furnace.Though they are baked at high temperatures, they can still be susceptible to cracks. They have a limited capacity to withstand extremely high temperature. Thus, these Refractory Bricks are not used in the internal parts of a kiln.



1] Specification for Fireclay Bricks

Grade Control Properties Supplamentary Properties
BD
HA		 AP
GP		 CCS
SBM		 Chemical Analysis
Al2O3 SiO2 TiO2 Fe2O3 CaO MgO Alkali P2O5
g/cm3 % N/mm2 %
CAT AS 70 2,10 11,0 80 26,0 68,0 0,9 1,1 0,7 2,5
Acid resistant brick (solubility in H2SO4 :2%) (EN 993-16)
CAT K 30 2,20 17,0 50 33,0 62,0 1,2 1,3 0,6 20,2 1,5
Fired fireclay brick for general use
CAT K 35 C 2,20 18,0 50 36,0 58,0 1,3 1,5 0,6 0,3 1,5
Fired fireclay brick for general use
CAT K 35 2,25 16,0 60 37,0 57,0 1,3 1,4 0,5 0,2 1,5
Fired fireclay brick for general use
CAT K 38 2,25 18,0 55 40,0 55,0 1,5 1,6 0,5 0,3 0,6
Fired fireclay brick for general use
CAT K 40 2,30 17,0 60 41,0 55,0 1,5 1,5 0,4 0,3 0,5
Fired fireclay brick for general use
CAT K 42 2,30 17,0 60 43,0 52,0 1,5 1,5 0,4 0,3 0,5
Fired fireclay brick for general use
CAT K 42 S 2,35 16,0 65 45,0 51,0 1,4 1,4 0,3 0,2 0,5
Fired special fireclay brick
CAT K 45 2,30 17,0 60 46,0 49,0 1,7 1,5 0,5 0,3 0,5
Fired fireclay brick for general use
CAT K 45 S 2,35 16,0 65 48,0 46,0 1,9 1,4 0,3 0,2 0,5 1,1
Chemicak bonded and fired special fireclay brick


2] Specification for Fireclay Bricks

Grade Design Properties
RUL
YAR		 TSR
TSD
Water		 Thermal Expansion Thermal Conductivity
400◦ 800◦ 1000◦ 550◦ 800◦ 1050◦
Ta◦ Cycle % W/m.K
CAT AS 70 >1250
Acid resistant brick (solubility in H2SO4 :2%) (EN 993-16)
CAT K 30 >1300 >10 0,3 0,5 0,6 1,10 1,15 1,25
Fired fireclay brick for general use
CAT K 35 C >1300 >10 0,3 0,5 0,6
Fired fireclay brick for general use
CAT K 35 >1300 >10 0,3 0,5 0,6 1,20 1,30 1,40
Fired fireclay brick for general use
CAT K 38 >1350 >15 0,3 0,5 0,6
Fired fireclay brick for general use
CAT K 40 >1350 >15 0,3 0,5 0,6
Fired fireclay brick for general use
CAT K 42 >1350 >20 0,2 0,5 0,6
Fired fireclay brick for general use
CAT K 42 S >1400 >25 0,3 0,5 0,7
Fired special fireclay brick
CAT K 45 >1350 >20 0,2 0,4 0,6 1,80 1,60 1,50
Fired fireclay brick for general use
CAT K 45 S 1400 25 0,3 0,6 0,7
Chemicak bonded and fired special fireclay brick