In the metallurgical industry, a heating furnace is industrial furnace that heats materials or workpieces (usually metals) to the temperature of rolling to forging.

Refractory castable technical data for heating furnace working layer

Item 项目		Refractory castable 耐火浇注料
		ZJ42	ZJ60	ZJ65	ZJS65	ZJ70
Al2O3      (%)	≥	42	60	65	65	70
Bulk density 体积密度(g/cm3)	≥	2.15	2.30	2.40	2.40	2.45
Modilus of rupture 常温抗折强度 (MPa)	110℃*24h	4	5	6	6	7
Cold Crushing Strength 常温耐压强度(Mpa)	110℃*24h	25	30	35	35	40
	Test temperature*3h	40 (1300℃)	45 (1350℃)	55 (1400℃)	55 (1400℃)	55 (1450℃)
Reheating Linear Change rate 重烧线变化率(%)	Test temperature*3h	-0.5- +0.5 (1300℃)	-0.5- +0.5 (1350℃)	-0.5- +0.5 (1400℃)	-0.5- +0.5 (1400℃)	-0.5- +0.5 (1450℃)
Using temperature 使用温度 ℃		1300	1350	1400	1400	1450