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Furnace Bottom & Sidewall Insulating Blocks

Introduction

Insulation blocks give furnace designer more choices on specific area to reduce mortar joints and significant fuel & labor savings. Large scale machine shop at the factory is capable of supplying accurate machined slabs & shapes.
FJM series insulation blocks are produced according to ASTM standard, extrusion to shape, grind to size, which have characters of low density, low thermal conductivity, accurate size tolerance with +/-1mm.
FLG135-1.25 grade insulation block is medium strength block with typical 10MPa CCS, the blocks are shape by mould, grind to size, which can reach accurate size tolerance with +/-1mm.
FLG130-1.30 grade blocks are made from selected fine raw material, pressed to shape. The block have ultra high strength with 20MPa cold crushing strength. Due to no grind after sinter, the blocks dimension tolerance is a bit bigger.

Application

Glass furnace sidewall and bottom insulation, port insulation, tin bath roof, etc. Ceramics roller kiln, tunnel kiln, pusher kiln, etc. Other industrial furnaces where less mortar joint is required.

Typical Index

Item	Unit	FJM23-0.7	FJM26	FJM28	FLG135-1.25	FLG130-1.30
Classfication Temperature	℃	1260	1430	1540	1350	1300
Bulk Density	g/cm3	0.65	0.8	0.9	1.25	1.3
Cold Crushing Strength	MPa	1.3	2.5	2.8	10	20
Modules of Rupture	MPa	1	1.4	1.7	—	—
Reheating Linear Change ℃X12h	%	-0.2 1230	-0.3 1400	-0.5 1500	-0.5 1350	-1.5 1300
Thermal Conductivity @350 ± 10℃	W/m·K	0.18	0.24	0.3	0.54	0.5
Thermal Conductivity @350 ± 10℃	W/m·K	0.18	0.24	0.3	@600℃	@600℃
Al2O3	%	42	55	65	52	43
Fe2O3	%	0.8	0.8	0.6	2	2.5

Product Solutions

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