Quality silica brick for Glass furnace-BUILDING MATERIALS INDUSTRY REFRACTORY MATERIALS FOR GLASS KILNS-Silica Brick,Fireclay Brick,Fireclay checker brick-SHANDONG LUQIAO NEW MATERIAL CORP.

Quality silica brick for Glass furnace

Items		BG-95B	BG-95A	BG-96B	BG-96A
SiO₂ %		≥95	≥95	≥96	≥96
Fe₂O₃%		≤1.2	≤1.2	≤1.0	≤0.8
Refractoriness/ ℃		≥1710	≥1710	≥1710	≥1710
Apparent porosity/ %		≤22	≤22	≤22	≤22
True Density/（g/cm³）		≤2.35	≤2.35	≤2.34	≤2.34
Cold crushing strength/ MPa	≥20kg	≥30 (25)	≥30 (25)	≥30 (25)	≥30 (25)
Cold crushing strength/ MPa	＜20kg	≥35 (30)	≥35 (30)	≥35 (30)	≥35 (30)
Refractoriness under load℃		≥1650	≥1660	≥1670	≥1680
Permanent liner change% 1450℃×2h		0~0.2	0~0.2		0~0.2
Al₂O₃+2×(K₂O+Na₂O)%	≥20kg		≤0.7		≤0.6
Al₂O₃+2×(K₂O+Na₂O)%	＜20kg		≤0.7		≤0.5
Purpose		Glass furnace
Notes		The values in parentheses are applicable to non-standard products such as feeding mechanisms and manual brick indicators