high quality clay bricks

Specifications

high quality clay bricks for glass furnace are especially suitable to build the bottom of furnace, cooling and working end

high quality clay bricks

Using big vibrating table and adopting special castables, the company produces furnace large fireclay blocks with vibrate moulding technology. The physical and chemical properties and appearance of the blocks have exceeded the national standards. The resistant ability to molten glass of the products is better than that of fanditional casting process products and ramming products . the products are especially suitable to build the bottom of furnace, cooling and working end side wall of glass furnace. 

 

Physical and chemical index

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(%)	1400°C 2hour	+0.1- -0.4	+0.1- -0.5	+0.2- -0.5
	1350°C 2hour				+0.2- -0.5	+0.2- -0.5	+0.2- -0.5	+0.2- -0.5