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We manufacture and export Fire Clay & High Alumina Bricks. Alumina is an excellent engineering ceramic, offering excellent electrical insulation properties together with high hardness and good wear resistance but relatively low strength and fracture toughness. It is also an electrically insulating material, with a high electrical resistivity, increasing with purity.
The technical data pertains to machine pressed standard bricks in compliance with the testing standard. These data are typical approximate guide value. Not to be construed as a binding specification.
Size tolerance ±1.% or 1.5mm whichever is greater.
Bricks with properties of higher values available where applications require the same.
The Different types of High Alumina Bricks have been mentioned further with different laboratory details.
| Sr.No | Product | AI2O3% min | Fe2O3% min | PCE O.C | B.D. Gm/cc | AP% Max. | CCS kg/cm2 | R.U.L Ta.C min | PLC% max AT/2hrs | Characteristics & Users |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Crown-30 | 30 | 2.5 | 30 | 2 | 25 | 200 | 1300 | 1350±1.0 | General Purpose medium head duty bricks |
| 2 | Crown-40 | 40 | 2.5 | 32 | 2.05 | 25 | 200 | 1400 | 1400±1.0 | General Purpose High heat duty bricks |
| 3 | Crown-GH | 36 | 2.5 | 31 | 2 | 24 | 200 | 1400 | 1400±0.5 | Fireclay blocks/bricks glass melting furnace |
| 4 | Crown-42D | 43 | 2 | 32 | 2.25 | 19 | 400 | 1430 | 1400±0.5 | General Purpose coke over,blast furnace |
| 5 | Crown-45 | 45 | 2.5 | 34 | 2.25 | 23 | 300 | 1450 | 1450±1.0 | Super duty bricks for general Purpose |
| 6 | Crown-45D | 45 | 1.5 | 33 | 2.3 | 20 | 450 | 1470 | 1480±0.5 | General Purpose Coke over, blast furnace |
| 7 | Crown50B | 50 | 2.5 | 35 | 2.3 | 22 | 350 | 1430 | 1450±1.0 | Suitable for burning zone of cement rotary kiln,ladle lining |
| 8 | Crown-60B | 60 | 3 | 36 | 2.5 | 23 | 350 | 1430 | 1600±1.0 | Suitable for burning zone of cement rotary kiln,ladle lining |
| 9 | Crown-62D | 62 | 1.2 | - | 2.55 | 16 | 650 | 1580 | 1600±0.3 | Blast furnace, coke over, calcination & ceramic industry |
| 10 | Crown-70B | 70 | 3 | 36 | 2.65 | 23 | 400 | 1470 | 1600±0.3 | Suitable for burning zone of cement rotary kiln,ladle lining |
| 11 | Crown-70L | 70 | 2.5 | 36 | 2.65 | 22 | 450 | 1450 | 1600±0.3 | Suitable for burning zone of cement rotary kiln,ladle lining |
| 12 | Crown-70SD | 70 | 1.5 | 37 | 2.65 | 22 | 450 | 1550 | 1600±0.5 | Dense,suitable for reducing atmosphere of rotary kiln and glass industry |
| 13 | Crown-80B | 80 | 3.5 | 36 | 2.75 | 23 | 400 | 1500 | 1600±1.0 | Special application in refineries petrochemicals etc. |
| 14 | Crown-80SD | 80 | 1.6 | 37 | 2.75 | 19 | 700 | 1580 | 1600±1.0 | Special application in refineries petrochemicals,Steel ladles etc. |
| 15 | Crown-SMT | 56 | 1.5 | 36 | 2.35 | 21 | 450 | 1500 | 1500±0.5 | For glass tank furnace, blast furnace, stove checker. |
| 16 | Crown-90S | 90 | 1 | - | 3 | 16 | 900 | 1720 | 1700±0.1 | Blast furnace hearth |
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Wankaner, Rajkot, Gujarat 
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