Process for the production of oxide-ceramic materials

Process for fast cooling and solidifying of molten materials with a metal oxide base, performed in a device which has two horizontally mounted metal cylinders with parallel axes, which rotate in opposite directions and are cooled, the outside of the cylinders having a corrugated surface on the rolling periphery and in each case an elevation on the surface of one cylinder engaging in a corresponding recess of the surface of the other cylinder, and the two cylinder surfaces at the plane common to the two axes of rotation forming a free gap of at least 0.5 mm and at most 10 mm, comprising causing the melt to flow into a gap between two horizontally mounted cylinders with parallel axes, which rotate in opposite directions and are cooled, the melt being taken up by cylinders which exhibit a corrugated surface on the rolling periphery and in each case an elevation on the surface of one cylinder engaging in a corresponding recess of the surface of the cylinder, with the formation of a roller gap, and the melt being drawn into the roller gap, cooled under pressure and the solidified material falling by gravity from the gap of the cylinders.