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Mark & model ： LN-55A、LN-55B、LN-65A、LN-65B、LN-75A、LN-75B、LN-85B、GN-85B
Quality standard ： International
H.S.Classification ： Glassware & Ceramics，Ceramic Products，6902 Refractory bricks, blocks, tiles and similar refractory ceramic constructional goods nesoi
HIGH ALUMINA REFRACTORY MORTARS | |||||||||
Goods Brand | LN-55A | LN-55B | LN-65A | LN-65B | LN-75A | LN-75B | LN-85B | GN-85B | |
Refractoriness ( ℃) min | 1770 | 1770 | 1790 | 1790 | 1790 | 1790 | 1790 | 1790 | |
Al2O3(%) min | 55 | 55 | 65 | 65 | 75 | 75 | 85 | 85 | |
Cold bending strength (MPa)min | after drying at 110 ℃ | 1.0 | 2.0 | 1.0 | 2.0 | 1.0 | 2.0 | 2.0 | 2.0 |
after burning at 1400℃x3h | 4.0 | 6.0 | 4.0 | 6.0 | 4.0 | 6.0 | *** | ||
after burning at 1500℃x3h | *** | 6.0 | 6.0 | ||||||
Refractriness under load 0.2 Mpa T2.0 ( ℃) min | *** | 1300 | *** | 1400 | *** | 1400 | *** | 1650 | |
Shrinkage after reheating (%) max | after burning at 1400℃x3h | +1~-5 | *** | ||||||
after burning at 1500℃x3h | ** | +1~-5 | |||||||
Bonding time (min) | 1~3 | ||||||||
Size (%) | -1.0mm | 100 | |||||||
+0.5mm max | 2 | ||||||||
-0.074mm min | 50 | 40 | |||||||
