Alumina-Periclase-Carbon Refractories Produced by OOO Ogneupor

Refractories and Industrial Ceramics - Technology for producing alumina-periclase-carbon refractories of the brands APUK-D and APU-D is developed and implemented. Use of complex antioxidant and...     

Study of the Possibility of Preparing Low-Cement Magnesia Concretes

Refractories and Industrial Ceramics - The possibility of producing vibro- and self-flow low-cement periclase concretes is investigated. It is shown that when the concrete mixture is prepared in...     

Dependence of properties of clay-phosphate binder on production technology

Economically efficient variant modes of manufacture of clay-phosphate binder are studied and the properties of the suspensions obtained are determined. From the point of view of the rheological properties of the system, the method of high-concentration ceramic binder suspensions is the optimal method of production. The properties of binders that have been obtained by means of boiling are virtually independent of preliminary mechanical activation of the clay. Samples of refractory substances manufactured based on clay-phosphate binder are distinguished by high mechanical strength and high thermal stability and do not soften with increasing heat treatment temperature right up to the service temperatures, which makes it possible to manufacture unfired compression-molded brickwork and high-alumina articles for use at high temperatures.     

Synthesis of Spinel from Caustic Magnesite and Alumina Dust

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.     

Diatomic heat insulation materials with increased application temperature

Results are provided for a study of an increase in application temperature for diatomite objects. Different molding methods and sample mix compositions are described for preparing objects based on diatomite with an application temperature up to 1150°C.