Embodied Energy of Castable Refractory Pieces vs. Refractory Tile

Hi all, my good friend and awesome masonry heater and oven builder @borealheat was here visiting over the weekend and in conversation brought up that he understood that pieces made of castable refractory likely have less embodied energy (overall energy necessary for production) than refractory tile given the amount of fuel/energy required in the firing of ceramics materials. Would anyone in the community be able to add support to this idea? I believe that Calcium aluminate cement forms the basis of castable refractory “concretes” when combined with refractory aggregates. So the question would have to do with the relative amount of energy for creating that cement vs. the high firing, I believe. Of course, another important factor is the price at which they reach the market and their utility. Thoughts?