Synthesis of Spinel from Caustic Magnesite and Alumina Dust

Author: Kashcheev I. D.   Kamenskikh V. A.   Zemlyanoi K. G.   Shatilov O. F.   Koptelov V. N.   Ponomarev D. V.  

Publisher: Springer Publishing Company

ISSN: 1083-4877

Source: Refractories and Industrial Ceramics, Vol.44, Iss.5, 2003-09, pp. : 301-305

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Abstract

The sintering of a mixture of a caustic dust and an alumina dust collected from electric filters taken in MgO/Al2O3 ratios of 0.1, 0.28, 0.5, and 0.75 at 1650°C is studied. Materials with superior physicomechanical properties are obtained: open porosity, 1.2 – 8.4%; density, more than 3.5 g/cm3, and compressive strength, 160 – 410 MPa. High-density pellets (free of additions) are prepared at a MgO/Al2O3 ratio of 0.75, with compressive strength as high as 160 MPa.