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Refracotry raw material

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Thermal insulation products

Lightweight insulating chamotte products, mullite siliceous products, mullite products and corundum products with volume density less than 1.3g/cm3 are used for working furnaces lining (unprotected) which are not exposed to the action of melt, abrasive and mechanical impact, or used for the intermediate insulation (protected) of the furnaces (GB 5040-96).

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Description

Index item	Specification standard
Index item	SHLA-1.3	SHKL-1.3	SHL-1.3	SHL-1.0	SHL-0.9	SHTL-0.6	SHL-0.4	MKRL-0.8	MLL-1.3	KL-1.3	KL-1.1
GB code	5040-96
Mass fraction,%
Al₂O₃, ＞	36	-	-	-	-	-	-	50	63	95	90
Fe₂O₃, ＜	-	-	-	-	-	1,6	-	1,0	1,4	0,3	1,0
SiO₂, ＜	-	-	-	-	-	-	-	-	-	0,5	-
Volume density，g/см³, ＜	1,3	1,3	1,3	1,0	0,9	0,6	0,4	0,8	1,3	1,3	1,1
Linear variation shrinkage(increase)，2 hours，%，＜， temperature ℃	1,0	1,0	1,0	1,0	1,0	0,7	1,0	1,0	1,0	0,8	1,1
	1400	1400	1300	1300	1270	1150	1150	1250	1550	1550	1550
Compressive strength，N/мм²,＞	4,5	3,5	3,5	3,0	2,5	2,5	1,0	2,5	3,0	3,5	2,5
Thermal conductivity W（m.K）＜, Average temperature，℃,
350±25	0,60	0,50	0,60	0,50	0,40	0,25	0,20	0,35	0,50	0,80	0,55
650±25 (определяется по In accordance with the requirements of customers)	0,70	0,60	0,70	0,60	0,50	0,30	0,25	0,40	0,60	0,80	0,55
Usage	Used for working (unprotected) lining furnaces which are not exposed to the action of melt, abrasive and mechanical impact, or used for the intermediate (protective) insulation of the furnaces

Foam diatom products and diatom insulation products are made by forming, drying, calcining foamy diatoms or combustible additives. They are used for building insulation and industrial equipment and pipes with insulation surface temperature not exceeding 900 degrees (GB 2694-78).

Index item	Specification standard
	PD-350	PD-400	D-500	D-600	PD-350	PD-400	Д-500
	PD-350	PD-400	D-500	D-600	Highest category
GB code	2694-78
Density（ Volume），kg/м³, ＜	350	400	500	600	350	400	500
Thermal conductivity，kilocalorie ( hourm℃)，＜, Average temperature：
25±3 ^оС	0,072	0,082	0,090	0,100	0,068	0,078	0,085
300±5 ^оС	0,105	0,115	0,135	0,145	0,100	0,110	0,130
Compressive strength，N/мм², ＞ At temperature，℃	6	8	6	8	8	9	8
Temperature line shrinkage at 900℃，%，＜	2	2	2	2	1,5	1,5	1,5
Usage	Used for building insulation and industrial equipment and pipes with insulation surface temperature not exceeding 900°С.