Abstract: Devices and methods of recycling cement waste. A cement waste recycling device (1) comprising a heater (2) with an inlet (3) for cement waste and an outlet (4) for processed cement waste, wherein the heater (2) is configured for transporting cement waste in a cement waste transportation direction from the inlet (3) to the outlet (4) while transporting heated gas in countercurrent with the cement waste transportation direction.

Abstract: An apparatus and a method for separating a material stream consisting of several materials. The materials to be separated have different densities or density ranges, so that the material of the highest density can be discharged through a screen of the apparatus, while the material of the lowest density can be discharged via a first outlet located near the top of the liquid. Material of an intermediate density is discharged via a second outlet, located at a position above and near the screen. An extra liquid supply, directed in counter flow to the flow of the material stream to be separated, ensures the effective removal of material of the lowest density.

Abstract: The invention relates to a method of separating solid particles, using a magnetic fluid, wherein the magnetic fluid is passed through a magnetic field for the purpose of changing the effective density of the magnetic fluid, and the particles are separated into fractions of different density. The present invention further relates to device for separating solid particles, using a magnetic fluid.

Abstract: The invention relates to a method of separating a particle fraction from a particle stream making use of gravitational force and which is performed in a fluid. This provides particle fractions that are collected in respective collecting means. According to the invention the fluid and the collecting means are moved in relation to each other defining a relative direction of movement. There are means provided to limit the movement of the particles to be separated with respect to the fluid in the relative direction of movement. The invention also relates to an apparatus for carrying out the method.

Abstract: The invention relates to a method for the recovery of non-ferrous metal-comprising particles from a particle stream. According to the invention, the particle stream is put onto a conveyor belt in the form of a monolayer such that with the aid of a liquid, at least the non-ferrous metal comprising particles will adhere to the conveyor belt, and the mono-layer is subjected to a magnetic field rotating in the same direction as the belt, for the separation of non-ferrous metal-comprising particles, yielding the non-ferrous-enriched fraction, and subsequent to which the metal particles that are not nonferrous adhering to the conveyor belt are removed, yielding the non-ferrous metal-depleted fraction.