Phosphate Bonding of Aluminous Aggregates and Thermo-Mechanical Characterisation of the Monolithics

TLDR: In this article, high viscous mono-aluminium phosphate and aluminium-chromium phosphate were prepared from out of standard chemicals for the purpose of studying the relative advantages when employed for bonding inert aggregates of fused alumina.

Abstract: Highly viscous mono-aluminium phosphate and aluminium- chromium phosphate were prepared from out of standard chemicals for the purpose of studying the relative advantages when employed for bonding inert aggregates of fused alumina.These were incorporated in a mix composed essentially of fused grains of bauxite, constituting the relatively inert matrix with a view to developing some suitable ramming masses which might meet the severe conditions of applications at high temperatures. The cold crushing strengths of such bodies and also hot mechanical strength, as determined from refractoriness under load, and compressional torsional creep measurements revealed that aluminium chromium phosphate was superior to mono-aluminium phosphate in spite of its lower P2Os content. The enhancement of strength is ascribed to greater thermal stability of aluminium-chromium phosphate. © 1978, Taylor & Francis Group, LLC.