High Strength KA40 Fire Clay Brick for Coke Oven

Fire clay bricks are made of 50% soft clay and 50% hard clay clinker, which are mixed according to certain particle size requirements. After molding and drying, they are fired at a high temperature of 1300~1400℃.

KA40 Fire Clay Brick Characteristics:

1.High strength.
2.Low porosity.
3.Good abrasion resistance.

KA40 Fire Clay Brick Application:

KA40 fire clay checker brick is mainly used in coke ovens, blast furnaces, hot blast furnaces, ladles, casting systems, boilers, cement kilns, glass kilns and various furnace linings and thermal equipment.

KA40 Fire Clay Brick Technical Data Sheet:
 

Item		KA40-1	KA40-1	Test Standard
Al2O3 (%)	μG	≥40	≥35	DIN51070 3 part
	δ	1.5	1.5
Fe2O3 (%)	μG	≤2.0	≤2.0	DIN501070/5
	δ	0.5	0.5
Apparent Porosity (%)	μG	≤20	≤24	DIN501056
	δ	2	2
Cold Crushing Strength (MPa) (KDF)	μG	≥35	≥30	DIN51067/1
	δ	10	10
	Xmin	25	20
Refractoriness under Load (DFB) ta ℃	μG	≥1450	≥1400	DIN51064
	δ	40	40
Refractoriness under Load (DFB) ta ℃	μG	≥1350	≥1300	DIN51053/1
	δ	25	25
Refractoriness (DEL) (℃)	μG	≥172/174 (SK33)		DIN51063/1
	δ	2 (SK1)