Lightweight insulation refractory brick - WH Thermal Technology(Shanghai) Co., Ltd.

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$Lightweight insulation refractory brick$

Lightweight insulation refractory brick

WH WH and WA series lightweight insulated refractory bricks adopt ASTM standards. Compared with general refractory bricks, they are lighter in weight, evenly distributed with small closed pores inside, and have a high porosity rate. Therefore, they have less heat loss and are more energy-efficient; At the same time, the heat storage capacity is smaller, so the heating and cooling are faster, suitable for rapid periodic use. This series of products is suitable for a temperature range of 900 ° C to 1700 ° C. WH B and C series lightweight insulated refractory bricks adopt JIS Japanese Industrial Standards. The product has excellent characteristics such as lightweight, low iron content, low heavy burning shrinkage, and resistance to atmospheric erosion. This series of products is suitable for a temperature range of 900 ° C to 1350 ° C.

Product Features

Low thermal conductivity, good insulation
High strength, good thermal shock resistance
Low heat capacity, fast temperature rise and fall
High dimensional accuracy
Low impurity content, good performance under reducing atmosphere
Can be processed into special shapes to reduce the number of bricks and joints

Typical Applications

Various industrial furnace hot surface refractory materials and backing insulation layers
Heating devices, annealing furnaces, soaking furnaces
Smelting furnaces, firing kilns, flues
Reducing atmosphere furnaces
Gas generators and pipelines, refining devices

Performance metrics

Product Code	WH-23	WH-23	WH-26	WH-28	WH-30	WH-32	WA-96	WA-98
Indicators	1260	1260	1400	1500	1550	1600	1650	1700
Classification temperature (° C)	1260	1260	1400	1500	1550	1600	1650	1700
Room temperature performance (26 ° C, relative humidity 50%)
Bulk density (Kg/m ³)	550	800	800	900	1000	1100	1350	1500
Flexural strength (ASTM C93, Mpa)	0.9	1.2	1.3	1.6	1.8	2.1	3.4	3.8
Cold compressive strength (ASTM C93, Mpa)	1.2	1.8	1.8	2.5	2.8	3.0	8.6	9.4
High temperature performance
Thermal conductivity Kcal/mph ° C (W/m · K), (ASTM C-182 at the following average temperature)
600°C	0.16	0.28	0.29	0.34	0.41	0.51
800°C	0.19	0.30	0.32	0.36	0.42	0.53
1000°C	0.21	0.33	0.35	0.38	0.43	0.55	0.64	0.72
1200°C			0.37	0.40	0.45	0.58	0.67	0.76
Reburning line variation (JIS R2613,%) (° C × 8h)	-0.3(1300)	-0.4(1400)	-0.4(1400)	-0.6(1500)	-0.6(1550)	-0.6(1600)	-0.4(1650)	-0.3(1700)
Reversible linear thermal expansion (maximum) (JIS R2617, ° C)	0.45(1000)	0.45(1000)	0.45(1000)	0.47(1000)	0.47(1000)	0.48(1000)	0.51(1000)	0.54(1000)
Chemistry (%)
Al₂O₃	40	40	54	62	74	80	96	98
Fe₂O₃	1.2	1.2	0.9	0.8	0.7	0.5	0.4	0.4
Match with adhesive paste	WM1300	WM1300	WM1400	WM1400	WM1500	WM1500	WM1700	WM1700