lightweight insulating firebrick IFB

Specifications Insulating firebrick

Series: JM23,,JM25, JM26, JM28, JM30, JM32

Temperature classes: 1260, 1350, 1430, 1540, 1650, 1760

      Product Description   Insulating firebrick K23/JM23 is manufactured from high-grade refractory powder and materials in good purity, compressed in vacuum and sintered under high temperature.  Product Features:   * Extremely low thermal conductivity * Low densities * Low heat storage * Good stength at room and high termperatures * Excellent resistance to alkali attack   Applications:   * Backup insulation for carbon baking furnaces * Backup insulation in aluminum electrolytic cells * Eletrical kilns for industrial and hobby use * Backup insulation for blast furnace stove linings * Lings for carbonizing furnaces * Forge furnace linings * Heat transfer linings   Technical Data Sheet:  

		JM-20	JM-23	JM-25	JM-26	JM-28	JM-30	JM-32
Classification Temperature (‘C)		1100	1260	1350	1430	1540	1650	1760
Bulk Density (g/cm3)		0.52	0.60	0.80	0.80	0.90	1.03	1.25
Cold Crushing Strength (Mpa)		0.8	1.2	2.0	2.0	2.6	2.8	3.4
Modulus of Rupture (Mpa)		0.6	0.9	1.2	1.5	1.6	1.7	2.0
Permanent Liner Change (%)        ‘C x hrs		0	0	-0.5	-0.5	-0.8	-0.9	-0.9
		1065x24	1230x24	1350x24	1400x24	1510x24	1620x24	1730x24
Thermal Conductivity	400’C	0.17	0.17	0.24	0.24	0.30	0.40	0.49
	600’C	0.19	0.19	0.28	0.27	0.32	0.42	0.50
	800’C	0.22	0.22	0.32	0.30	0.35	0.44	0.51
	1000’C	0.24	0.25	0.37	0.32	0.38	0.45	0.53
	1200’C	--	--	--	0.35	0.39	0.47	0.55
Chemical Analysis
Al2O3 (%)		45	45	50	55	65	72	76
Fe2O3 (%)		0.9	0.9	0.8	0.8	0.5	0.4	0.3
SiO2 (%)		50	50	45	42	32	26	22
CaO + MgO (%)		0.5	0.7	0.6	0.3	0.2	0.3	0.2
K2O + Na2O (%)		1.3	1.3	1.0	1.0	0.8	0.2	0.1

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