High‐Temperature Centrifuge for Separation of the Liquid Phase from Refractories: I, Background Studies

Evidence for the migration of the liquid phase in refractories is reviewed, and consideration is given to means of separating the liquid from refractory specimens to allow its study. Methods include absorption by porous media and gravity flow into platinum crucibles (the latter unworkable). Centrifuging at high temperatures is judged to be the most practical, and room‐temperature experiments are described which show that liquid (glycerine) of 1000‐centipoise viscosity can be removed by centrifuging.