Abb Research Ltd.

University of Toronto

Asea Brown Boveri Ag

Alstom

Tenova Goodfellow Inc.

Abb Ricerca Spa

Tenova S.p.a.

Enrico Malfa

Srivats Srinivasachar

Majed Toqan

Vittorio Scipolo

Sacha Parneix

G&uuml;nter Wilfert

Gisele Azimi

Gianfranco Velcich

Francesca Nappini

Vassilios Burdis

Krzysztof Kietlinski

Piero Bodini

Marcello Garavaglia

Reinhard Schurian

Frank Steege

G&uuml;nter K&uuml;bler

Jihye Kim

Fabio Praolini

Mattia Bissoli

Lucio Bozzetti

Marta Guzzon

Marcello Pozzi

Francesco Memoli

A process for the granulation of slag deriving from iron and steel production, in particular a process for the granulation of slag in air, and an apparatus configured to perform this process, provide for the production of granulates with different characteristics depending on the intended use, thus making this process and apparatus particularly versatile. More specifically, a process according to the present invention includes a step of controlling and modifying the time and/or the cooling rate of the slag granules so as to obtain slag granules having desired morphological features.

Process and apparatus for the granulation of slag deriving from iron and steel production

Pyro-hydrometallurgical methods are described to economically and environmentally recover a target metal from iron slag or steel slag. For instance, the method can enable subjecting an iron or steel slag feed to acid-baking with an acid to produce a dried mixture comprising at least one soluble metal salts, then subjecting the dried mixture to water leaching to an aqueous solution comprising an aqueous leachate rich in said target metal and solid residues and subsequently separating the aqueous leachate rich in said target metal from the solid residues. This acid-baking water-leaching method facilitates efficient recovery of target metal compared to conventional methods.

Methods for recovering a target metal from iron or steel slag using at least one of a carbothermic reduction process and a pyro-hydrometallurgical process

A method of producing a calcined raw meal and of producing additional steam in an existing steam generator comprises the following steps: pulverized raw meal, hydrocarbon, primary air and secondary air are fed to a calciner system ( ), wherein the raw meal is calcined in a temperature range between 850&deg; C. and 950&deg; C., the calcined raw meal is separated from the calciner flue gases at the exit of the calciner system, the calcined raw meal is directed through a cooler ( ), in which it exchanges its heat with the secondary air, the calciner exhaust gases are directed in the gas path of the backpass of the steam generator ( ) at an appropriate temperature window and are used for steam production. The raw meal consists mainly of limestone (CaCO ) and the calcined material is mainly lime (CaO). The fuel feed ( ) to the steam generator ( ) is reduced during introduction of the exhaust gases into its backpass.

Method of producing steam and calcined raw meal

A force-convection heat exchanger for a rotary electrical machine, which includes one or more tubing elements arranged between the conductors that constitute the stator windings of the rotary electrical machine. A cooling fluid circulates into the tubing elements.

Forced-convection heat exchanger for a rotary electrical machine

An emission treatment apparatus for manufacturing plants including an inlet duct, a decantation chamber and an outlet duct. The emission treatment apparatus advantageously includes elements located inside of the decantation chamber for rendering uniform the flow of the emissions.

Apparatus for treating emissions of manufacturing plants

The section of an electrical high-voltage system has a gas-filled housing of predominantly symmetrical design. Provided in the housing are a conductor extending along a plane of symmetry of the housing, and cooling means for producing a circulation flow which dissipates heat loss from the conductor. The cooling means contains two blowers. The blowers are arranged in the interior of the housing and designed in such a way that, during the operation of the system, two mirror-symmetrical circulation part flows are formed which are bounded by the plane of symmetry. These circulation part flows are in each case guided without recirculation along a housing side wall from the top of the housing or the bottom of the housing. By this means, the heat loss is given up particularly effectively to the housing side walls, and the conductor can be loaded with very high operating currents.

Section of a high-voltage system having cooling means and including a conductor

Growing community of inventors

Zanica, Italy

Enrico Malfa