In:
Advanced Materials Research, Trans Tech Publications, Ltd., Vol. 690-693 ( 2013-5), p. 35-39
Abstract:
The present explains sintering characters of the Al 2 O 3 -86 homogenized bauxite under wet processes homogenization , which includes classified bauxite mine, wet grinding, vacuum extrusion, sintering in tunnel kiln,etc . DSC and TG reveal an evident peak of absorption heat at 531°C, resulting from the dehydroxylation of bauxite. Green samples held at 550°C*6hrs were heated up to different temperatures, and the properties of weight loss, linear change, bulk density and apparent porosity were measured. The data show that liquid-phase emerge and sintering process goes slowly above 1100°C. At 1500°C, large amounts of liquid-phase form, making liquid-phase sintering have a positive effect. The analysis of XRD and SEM indicate that, corundum grains develop more inadequate and most of the corundums interlace in a compact way, which can separate the widespread liquid phase and improve the sintering capability of homogenized bauxite.
Type of Medium:
Online Resource
ISSN:
1662-8985
DOI:
10.4028/www.scientific.net/AMR.690-693
DOI:
10.4028/www.scientific.net/AMR.690-693.35
Language:
Unknown
Publisher:
Trans Tech Publications, Ltd.
Publication Date:
2013
detail.hit.zdb_id:
2265002-7
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