Refractory materials for aluminum industry-Refractory materials for aluminum industry-SHANDONG LUQIAO NEW MATERIAL CORP., LTD.

Refractory materials for aluminum industry

$Refractory materials for aluminum industry$

Items		Alumina ceramics	Loosen Mullite	Compact Mullite	Compact Cordierite	Stoneware Porcelain
SiO₂		30-35	25-30	45-50	45-50	63-68
Al₂O₃		60-65	65-70	40-45	40-45	25-30
MgO		≤0.3	≤0.5	5-9	＜5-9	≤0.5
K₂O+Na₂O+CaO		≤3	≤1.5	＜2	＜1.5	≤5
Density	g/m³	2.68	2.42	2.16	2.31	2.47
Density	lb/ft³	167.3	151.1	134.9	144.2	154.2
Stacking Density	Kg/m³	965	871	778	832	889
Stacking Density	lb/ft³	60.2	54.4	48.6	51.9	55.5
Thermal expansion coefficient	10^-⁶⁰K^-¹	6.2	3.5	3.4	6.3	4.8
Thermal expansion coefficient	10^-⁶⁰K^-¹	3.4	1.94	1.86	3.4	2.7
Specific Heat Capacity	J/kgk	992	942	1016	998	897
Specific Heat Capacity	BTU/lb ⁰F	0.237	0.221	0.243	0.238	0.214
Thermal conductivity	W/mk	2.79	1.89	1.63	2.42	1.37
Thermal conductivity	BTU in/ft²hr ⁰F	19.4	13.1	11.3	16.8	9.5
Thermal Shock	Max K	500	500	600	550	500
Thermal Shock	Max 0F	900	900	1080	990	900
Refractoriness	℃	1500	1320	1400	1580	1380
Refractoriness	℉	2732	2408	2552	2876	2516
Mas work Temp.	℃	1400	1200	1300	1480	1280
Mas work Temp.	℉	2550	2228	2372	2698	2336
Max heat storage capacity	kWh/m³k	0.266	0.228	0.219	0.231	0.222
Max heat storage capacity	BTU/ft³ ⁰f	14.3	12.0	11.8	12.4	11.9
Water absorption	%	≤12	≤5	15-20	15-20	≤5
Anti-acidity	%	0.2	5.0	16.7	2.5	0.3