Danieli & C. Officine Meccaniche S.p.a.

Centro Sviluppo Materiali S.p.a.

Hyl Technologies S.a. De C.v.

Alessandra Primavera

Milorad Pavlicevic

Alfredo Poloni

Angelico Della Negra

Fabio Vecchiet

Fabio Guastini

Luciano Vignolo

Alejandro Sanz Lara

Selena Tiburzio

Alessandro Martinis

Stefano Terlicher

Alessandro Dulcetti

Gianfranco Marconi

Michele Condosta

Stefano Luperi

Davide Braga

Daniela Dalle Nogare

Nicoletta Zacchetti

Eugenio Zendejas Martinez

Luca Lattanzi

Simone Guanin

Emanuele Trucillo

Alessio Milocco

Luca Tommasi

Liliana Florina Arsene

Hans Rudolf Gutknecht

Gilberto Garza Rodriguez

Alberto Zugliano

Eduardo Alvarez Vazquez

Solid agglomerated product, usable as a charge material for an electric arc furnace, comprises at least one fraction of by-product deriving from a steel plant and which comprises a first part containing ferrous oxide FeO and a second part containing ferric oxide FeO, a fraction of solid fuel (CR) containing a quantity of carbon and at least one inorganic binder to agglomerate a fraction of by-product and the fraction of solid fuel with each other and give the agglomerated product the required mechanical properties. The inorganic binder at least partly comprises slag.

Solid agglomerated product based on iron oxides and corresponding production method

The invention concerns a process for detecting water leaks in smelting furnaces () or in metal or alloy treatment plants, comprising the following steps: (i) providing at least one smelting furnace (), or at least one metal or alloy treatment plant provided with a water cooling system () and being connected to a process fume exhaust system; (ii) mixing in the cooling water a tracer chemical which is volatile in the event of water leakage together with the exhaust gases and which is suitable to be detected by an analysis system of the exhaust gases; and (iii) detecting said tracer chemical contained in the exhaust gases by said analysis system comprised in said process fume exhaust plant, wherein said tracer chemical is deuterated water. The invention further refers to a Plant for the production of metals or alloys.

Process for detecting water leaks from smelting furnaces in metal or alloy production plants and related plant

The invention concerns a continuous pickling plant () for the treatment of metal products () in the form of a strip or tube which includes a plurality of acid solution process tanks () each divided into a plurality of turbulence cells () and a recirculation system of the acid solution. The plant also includes, upstream of the plurality of process tanks (), a device for heating () the metal product (), namely an induction heating () system and/or a tunnel with water sprays (). A solution with only two pickling tanks () is also presented. Devices are described () to increase turbulence in the tanks and to accelerate pickling, e.g. by adding fresh acid () in the first tank. The invention also concerns a related pickling process. The invention optimizes the effect of the acid and reduces the residence time of the strip () in the plant.

Pickling plant and process

A plant for cleaning rolled metal strips provided with a superficial layer of oxide, the plant comprising unwinding means for unwinding at least one coil of rolled strip and pickling means for pickling said rolled strip; wherein there are provided measuring means for measuring the thickness of the superficial layer of oxide, arranged between said unwinding means and said pickling means. A relating cleaning method is also claimed.

Cleaning plant for metal products

A plant for recovering and treating residues from crushing scrap is provided. The plant includes a first plant part and a second plant part. The first plant part is provided with crushing and separation means configured to extract ferrous materials, non-ferrous metals and plastic materials from the residues from crushing. The separation means are provided with a granulator system configured to reduce, in dry mode and without pre-screening stages, the residues from crushing into a stream of granular material. The second plant part is provided with means to treat and size the plastic materials configured to transform the plastic materials into additive material to be used, in particular, in iron and steel plants such as blast furnaces, electric arc furnaces or suchlike. The means to treat and size the plastic materials includes a dry system for cutting and/or grinding the plastic materials.

Plant and method for recovering and treating residues from crushing ferrous scrap

A method and apparatus for producing direct reduced iron using a pre-treated make-up gas as a reducing agent in a direct reduced iron reactor are provided. The method involves pre-treating a stream of make-up gas containing heavy hydrocarbons by subjecting the stream to low temperature adiabatic reforming at a temperature between 300&#xb0; C. and 600&#xb0; C., prior to using the stream of make-up gas as a reducing agent for producing direct reduced iron. The method also involves adjusting the humidity content of the stream of make-up gas after the low temperature adiabatic reforming by bypassing the stream to selectively split it into a first part of the stream of make-up gas and a second part of the stream of make-up gas, subjecting the first part to water separation, and then mixing the first part with the second part to obtain a reducing stream to be sent to direct reduced iron production.

Method and apparatus for producing direct reduced iron utilizing a catalytical pretreatment of hydrocarbons as a source of reducing gas

A continuous annealing and pickling process of flat cold-rolled products, such as stainless steel strips, to obtain a high surface quality product at high production rates and with a low environmental impact. It comprises the following steps: heating, up to a temperature comprised in the range 650-1050&#xb0; C., in an atmosphere with an oxygen content comprised in the range from 0.5 to 12%; heating for a time comprised from 10 to 200 sec up to a temperature comprised in the range from 650 to 1200&#xb0; C. in presence of oxidizing agents and/or inert agents; cooling down to temperatures comprised in the range from 650&#xb0; C. to ambient temperature in presence of oxidizing agents and/or inert agents; thermochemical or electrolytic descaling and finally possible pickling and/or passivation, by means of the use of pickling baths consisting of mineral acid solutions.

Annealing and pickling process

An apparatus and process for the dry removal of the scale from the surface of a metal product comprising at least one heating area that does not reduce the specific surface of the material to be treated and does not cause oxidation, at least one reducing area for performing the reaction between a specific reducing gas (normally hydrogen) and at least the scale, at least one cooling area for cooling the metal product, means for heating the metal product, means for heating the reducing gas, means for controlling the fluid dynamics of the boundary layer produced by the flow of said reducing gas over the surface of the metal product, means for removing the reaction products front the reducing gas after the reaction, means for cooling the metal product, and means for removing the reaction products from the treated surface of the metal product.

Apparatus and process for the dry removal of the scale found on the surface of the metal products

An apparatus and process for the dry removal of the scale from the surface of a metal product comprising at least one heating area that does not reduce the specific surface of the material to be treated and does not cause oxidation, at least one reducing area for performing the reaction between a specific reducing gas (normally hydrogen) and at least the scale, at least one cooling area for cooling the metal product, means for heating the metal product, means for heating the reducing gas, means for controlling the fluid dynamics of the boundary layer produced by the flow of said reducing gas over the surface of the metal product, means for removing the reaction products from the reducing gas after the reaction, means for cooling the metal product, and means for removing the reaction products from the treated surface of the metal product.

Apparatus and process for the dry removal of the scale found on the surface of metal products

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Faedis, Italy

Alessandra Primavera