AR 78 AR 90 Alumina-Rich Spinel
●Product Description
■Manufactured from high purity raw materials.Magnesium Aluminate Spinel has excellent refractory properties and is recognized as a superior refractory aggregate.
■Almatis Spinels AR 78 and AR 90 are eminently suitable for castables in steel ladles.It is generally agreed that the spinel content of such castables should be in the order of 15-30%.AR 78 and AR 90 are distinguished by their chemistries (78% and 90%alumina respectively). They are available in a variety of closely controlled sizes, from -20 micron to 3-6 mm.Within spinel containing refractory formulations AR 78 is preferably used for the fines to the medium sized fractions,whereas AR 90 shows most benefit when used in the medium to coarse size grain fractions.
■Laboratory investigations and market experiences show that spinel addition to aluminous refractory bodies, prefired shapes.and monolithics considerably improve their resistance to slag attack and their thermal shock resistance.
■The hot modulus of rupture and the thermo-mechanical strength can be increased considerably by addition of alumina-rich spinel to the mix.
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Alumina-Rich Spinel 、 Magnesium Aluminate Spinels 、 Almatis Alumina-Rich Spinels |
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Datasheet |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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2024/6/26 |
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588 KB |
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