High-alumina slurry waste metallurgy aluminium alloys - complex modifier of heat-resistant and refractory composites

Abstract

Abstract The effect of aluminate slimes on the thermomechanical properties of heat-resistant and refractory composites has been investigated. The optimal content of nanotechnogenic raw materials in the studied compositions was revealed. It has been established that the replacement of expensive refractory powders (alumina, chamotte) with high-alumina industrial waste in general has a positive effect on the durability of refractories. The chemical components of aluminate sludges and the principles of their action on refractory compositions in the area of critical operating temperatures are given. The decrease in the water-cement ratio allowed in mineral compositions based on hydraulic binders to form plastic structures with enhanced rheological characteristics. The mechanism of the proceeding processes in refractory materials on phosphate binder is clarified.