Surface effects of molten slag spills on calcium aluminate cement paste

Industries such as metal, ceramics and petrochemicals suffer from high temperature spills. Such events exert a unique form of loading in concrete structures that cannot be accurately simulated by heating of samples in an oven. Calcium aluminate cement (CAC) based concrete is the industry standard for such environment, and while much is known...

Re-curing of calcium aluminate cements post contact with molten slag

Calcium aluminate cements (CAC) are widely used for the production of refractory concretes that are able to withstand extreme temperatures. During exposure to such temperatures, the main hydration phases revert to mayenite, calcium aluminate and calcium dialuminate. Many investigations focused on the description of this mechanism and how it...

Leaching characteristics and mechanism of the synthetic calcium-aluminate slags for alumina recovery

The leaching characteristics and mechanism of synthetic CaO-Al ₂ O ₃ slags in alkaline solution at atmospheric pressure have been studied. The purpose of the study is to have a better understanding of the leaching part of the Pedersen process, as an alternative to the Bayer process for alumina production. The...

Modification of oxide inclusions in calcium-treated Al-killed high sulphur steels

A study has been carried out to understand the modification of alumina inclusions in Al-killed high sulphur steel with calcium treatment. For calcium treatment to be effective, a general practice is to desulphurise the steel to prevent the formation of solid CaS inclusions that are harmful to steel quality and final properties. To avoid this...