Andritz Ag

Other

Gabl, Helmuth

Lorenz, Edmund

Niederl, Franz

Helmuth Gabl

Axel Pichler

Bernhard Scherzinger

Alexander Gscheider

Gerald Schadler

Erwin Hertl

Peter Antensteiner

Walter Writzl

Edmund Lorenz

Franz Niederl

Andreas Gorton-H&uuml;lgerth

Andreas Gorton-Hülgerth

Gerd Reisner

Heribert Loew

The subject of the present invention is a method for processing electrical and electronic components in order to recover valuable materials, such as the metals contained in printed circuit boards. According to this method, the electrical and electronic components are pre-shredded mechanically and then mixed with a liquid before they undergo wet milling ().

Method for processing of electrical and electronic components to recover valuable materials

The subject of the present invention is a method for processing metallized packaging materials, especially beverage cartons, or blister packaging. According to the invention, the aluminum is dissolved with the aid of acid and separated from the plastic. The metal-containing acid solution then undergoes pyrohydrolytic treatment and the acid is thus recovered. The aluminum can be recovered as valuable aluminum oxide.

Method for processing packing material to recover aluminium

The subject of the present invention is a combustion turbine () for intermittent combustion with at least one combustion chamber () having inlet valves () and an ignition device (), the at least one combustion chamber () having no shut-off devices on the off-gas side and being thus open on the off-gas side at all times. Downstream of the at least one combustion chamber (), a turbine (), which can be impinged with process gas obtained in the combustion chamber (), is positioned, with a flow-through chamber () being positioned between the at least one combustion chamber () and the turbine () axially behind the at least one combustion chamber (). The flow-through chamber () is separated from the at least one combustion chamber () by a guiding plate () or a further turbine (). The subject of the present invention is furthermore a process for operation of a combustion turbine () and a drive system for a machine having as its core a combustion turbine () according to the invention.

Combustion turbine in which combustion is intermittent

The disclosure relates to a process and device for aerating suspensions, particularly to flotate them, for example in deinking of pulp suspensions which includes a primary and secondary stage. In order to improve ash removal, a washing process is interposed between the primary and secondary stages.

Process and device for aerating suspensions

A method for controlling operation of a flotation cell, where the liquid level and the foam level in the cell are measured and controlled. The method includes measuring at least one quality characteristic of the accept leaving the cell and determining the set value(s) for the liquid level and/or the foam level on the basis of the measured quality characteristic. The method is particularly suitable for flotation of a pulp suspension, particularly in deinking flotation.

Process for controlling operation of a flotation cell

A screen, for cleaning a fiber suspension, includes at least one separating unit containing a housing, a parabolic rotor, a screen basket, an accept chamber, and a reject outlet. The reject outlet is located in the vicinity of the maximum rotor diameter. The screen also includes one or several devices for interrupting the axial flow located in the vicinity of the maximum rotor diameter.

Screen for cleaning a fiber suspension

A process for aerating suspensions, particularly to flotate them, for example in deinking of pulp suspensions, with one or more stages and/or cells. Each stage/cell has its own separate liquid loop. A cleaner is interposed to improve removal of dirt specks.

A flat or cylindrical screen includes rods and rod-bearing supporting elements. The rods have protrusions in the side walls which are received into inversely shaped recesses in a supporting element. The screen is manufactured by bending the supporting elements open elastically and inserting the rods, whereupon the supporting elements spring back, encircle the rods positively and form a screen mat.

Screen and process for manufacturing a screen of this kind

Apparatus and process for aerating a liquid with gas, the apparatus comprising a pressure vessel including a lower section containing the liquid and an upper section containing a volume of the gas. A pressure connection in the upper section of the pressure vessel adapted receives the gas. A nozzle in the upper section of the pressure vessel receives the liquid. An injector extends from the upper section of the pressure vessel to the lower section of the pressure vessel and has a head in fluid communication with the nozzle. Part of the gas volume is sucked in by the vacuum generated by the liquid injected, carried along together with the liquid and mixed intimately with the liquid at the same time.

Process and device for aerating a liquid with gas

The invention relates to a device for separating solids from liquids by means of flotation, particularly for separating impurities and ink particles from fibre suspensions, with several injectors, which are provided inside a flotation cell. It is mainly characterised by the injectorsbeing arranged in one row.

Device for separating solids from liquids by means of flotation

A device and process for aerating dispersions, particularly for flotation of pulp suspensions, in a de-inking process where the pulp suspension containing dirt particles is sprayed into a tank together with air. The air is injected at a minimum of two successive points and mixed with the suspension.

Process for aerating dispersions

Apparatus and a process for separating impurities from a suspension in a flotation cell, including an aeration device for aerating a liquid with a gas until the liquid is saturated. An expansion device expands the liquid saturated with gas to form gas bubbles in the liquid. An addition device adds the liquid containing gas bubbles to the suspension in the flotation cell.

Process and device for separating impurities from a suspension by flotation

A screen for cleaning a pulp suspension including an additional screen basket in the infeed area for pre-screening.

Screen

A refiner including a rotor and a stator defining a cylindrical or conical refining gap therebetween. A pulp feed channel extends in a radial direction from an inlet pipe to the refining gap.

Refiner

A screen for cleaning a pulp suspension includes a stationary installation in the infeed area between the infeed branch and the free end of the rotor.

Growing community of inventors

Graz, Austria

Helmuth Gabl