Scanner for ultrasonic scanning of surfaces.

Abstract of EP 0453014 (A1) Scanner for scanning surfaces with ultrasonic signals, in particular surfaces of parts of the body, provided with a scanner head (5) for the transmission of ultrasonic signals and the reception of the echoes hereof. The time passed between the emission of the signal and the reception of the echoes thereof, is a...

Hearing aid comprising an array of microphones

Hearing aid for improving the hearing ability of the hard of hearing, comprising an array of microphones, the electrical output signals of which are fed to at least one transmission path belonging to an ear. Means are provided for deriving two array output signals from the output signals of the microphones, the array having two main sensitivity...

A method for treating bottom ash

A method for treating bottom ash from a waste incineration plant. The invention relates in particular to a method for treating bottom ash from a domestic waste incineration plant. In accordance with the invention bottom ash having a size ranging up to 2 mm is treated by removing a previously determined component. The treatment comprises at least...

Apparatus for separating solids from a liquid

The invention relates to 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...

Process and device for the separation of fragments of liberated ferrous scrap from not liberated ferrous scrap fragments by means of a static magnet

The invention relates to a process and device for the separation of fragments of liberated ferrous scrap from not liberated ferrous scrap fragments by means of a static magnet, wherein a mixture of said liberated ferrous and not liberated ferrous fragments is fed onto a continuous conveyor belt which is driven around drums and wherein said...

Method and apparatus for separating parts, in particular seeds, having different densities

A method for separating seeds of different densities in a process stream, wherein the seeds are introduced into a magnetic process fluid for the formation of the process stream, which process stream is subjected to a magnetic field for the realization of a density stratification in the process stream, such that the individual seeds in the...

Separation-apparatus

The invention relates to a separation-apparatus (1) for separating from a particle-stream (4) at least a first fraction with particles (3) of a first group of dimensions, and a second fraction with particles (3) of a second group of dimensions, comprising an infeed-device (2) for the particle-stream (4), a rotatable drum (5) having at its...

Method and apparatus for separating a non-ferrous metal-comprising fraction from ferrous scrap

Method for separating a non-ferrous metal-comprising fraction from ferrous scrap, wherein the ferrous scrap is conveyed to a processing device for separating the non-ferrous metal-comprising fraction from the remainder of the ferrous scrap. The processing device supplies a beam of water, and the ferrous scrap is conveyed and released into the...

Use of an apparatus for separating magnetic pieces of material

Using of an apparatus for separating magnetic pieces of scrap-material of a first group from magnetic pieces of scrap- material of a second group, wherein a mixture of pieces of scrap-material from the first group and from the second group is collectively transported with a conveyor to a separating zone, in which separating zone the pieces or...

Method and apparatus for the separation of solid particles having different densities

A method and apparatus for separating solid particles of different densities, using a magnetic process fluid. The solid particles are thoroughly mixed in a small partial flow of the process fluid. The small turbulent partial flow is added to a large laminar partial flow of the process fluid, after which the obtained mixture of the respective...

Eddy current separation apparatus, separation module, separation method and method for adjusting an eddy current separation apparatus

Eddy current separation apparatus (1) for separating particles (20) from a particle stream (w), wherein the apparatus (1) comprises a separator drum (4) adapted to create a first particle fraction (21) and a second particle fraction (23), a feeding device (2) upstream of the separator drum (4) for supplying particles (20) to said separator drum ...

A method of separating scrap, and a device

The invention relates to a method of and a device for separating scrap comprising scrap items of a first type and of a second type, at least one of said types of scrap comprising metal. According to the invention, the method comprises the steps of passing a spot of light over the surface of a scrap item, and performing a plurality of successive...