Metallgesellschaft Aktiengesellschaft

Outotec Oyj

Mannesmann Aktiengesellschaft

Other

Outokumpu Oyj

Tioxide Group Services Limited

Stora Kopparbergs Bergslags Aktiebolag

Outotec Oyi

Lurgi Metallurgie Gmbh

Outotec (finland) Oy

Outokumpu Technology Oy

Martin Hirsch

Lothar Reh

Peter Weber

Harry Serbent

Andreas Orth

Michael Ströder

Werner Stockhausen

Lothar Formanek

Alpaydin Saatci

Wolfgang Bresser

Dirk Nuber

Hans-Werner Schmidt

Paul E Queneau

Paul Rudolph

Nikola Anastasijevic

Wolfram Schnabel

Michael Stroeder

Ludolf Plass

Georg Daradimos

Stuart Sneyd

Walter Koch

Heribert Koenig

Ali-Naghi Beyzavi

Sune N Flink

Fritz Rose

Uwe Harter

Albert Kaune

Jochen Freytag

Karlheinz Rosenthal

Yilmaz Yetmen

Klaus-Dietrich Fritzsche

Reza Husain

Roland Rammler

Walter Meichsner

Carl Hafke

Per H Collin

Bjorn Widell

Per Harald Collin

Rainer Reimert

Hans Beisswenger

Gerhard Baron

Fred Erich Cappel

Gero Rath

Harald Sauer

Wolfgang P Frank

Hermann Schmidt

Peter Fischer

Barry Hooper

Martin Rahn

John F Davidson

Gerhard Birke

Rolf Graf

Dietrich Werner

Siegfried Schimo

Norbert Magedanz

Wladyslaw Lewandowski

Volker Franz

Hans Werner Schmidt

Detlev Schlebusch

Hans-Joachim Werz

Eberhard Blaum

Johannes Albrecht

Hermann Lommert

Fred Stieler

Detmar Arlt

Kurt Meyer

Johannes-Josef Albrecht

Jorg Thomas

Rudolf Kral

Wolfgang Krieger

Brian Bennett

Neil Fallon

Peter John Davidson

Martin Conduit

Ali Beyzavi

Helmut Hausmann

Karlheinz Broj

Manfred Heil

Jurgen Otto

Walter Gerlach

Heiko Weisel

Bernd Kosters

Harry Edward Cross

Eberhard Anschutz

A plant for producing metal oxide from metal compounds includes a fluidized-bed reactor in which the metal compounds are heated by a combustion of a fuel to produce metal oxide. The fluidized-bed-reactor reactor includes at least one gas supply tube at least partly surrounded by an annular chamber in which a stationary annular fluidized bed is disposed, and a mixing chamber disposed above an orifice region of the gas supply tube. A gas flowing through the gas supply tube entrains solids from the stationary annular fluidized bed when passing through the orifice region.

Process and plant for producing metal oxide from metal compounds

A plant for the heat treatment of solids containing iron oxide includes a fluidized bed reactor. The reactor includes at least one gas supply tube at least partly surrounded by an annular chamber in which a stationary annular fluidized bed is located, and a mixing chamber being located above the upper orifice region of the at least one gas supply tube. The gas flowing through the at least one gas supply tube entrains solids from the stationary annular fluidized bed-into the mixing chamber when passing through the upper orifice region of the at least one gas supply tube.

Method and plant for the heat treatment of solids containing iron oxide

A plant for the heat treatment of solids containing iron oxide. The plant includes a reactor including a fluidized bed reactor. The reactor includes a gas supply system disposed in the reactor, a stationary annular fluidized bed which at least partly surrounds the gas supply system, and a mixing chamber. The gas supply system is configured so that gas flowing through the gas supply system entrains solids from the stationary annular fluidized bed into the mixing chamber.

A plant for the heat treatment of solids containing titanium includes a fluidized bed reactor. The reactor includes at least one gas supply tube being at least partly surrounded by an annular chamber in which a stationary annular fluidized bed is located, and a mixing chamber being located above the upper orifice region of the gas supply tube. The gas flowing through the gas supply tube entrains solids from the stationary annular fluidized bed into the mixing chamber when passing through the upper orifice region of the gas supply system. The plant further includes a solids separator downstream of the reactor. The solids separator includes a solids conduit leading to the annular fluidized bed of the reactor.

Plant for the heat treatment of solids containing titanium

The present invention relates to a method for the conveyance of fine-grained solids in a fluidized bed reactor and also to a corresponding plant. It is proposed to introduce a first gas or gas mixture from below through a central tube () into a mixing chamber () of the reactor (), the central tube () being at least partly surrounded by a stationary annular fluidized bed () which is fluidized by supplying fluidizing gas. The gas velocities of the first gas or gas mixture as well as of the fluidizing gas for the annular fluidized bed () are adjusted such that the particle Froude numbers in the central tube () are between 1 and 100, in the annular fluidizied bed () between 0.02 and 2 in the mixing chamber () between 0.3 and 30.

Method and plant for the conveyance of fine-grained solids

The present invention relates to a method and a plant for producing low 15 temperature coke, in which granular coal and possibly further solids are heated to a temperature of 700 to 1050&#xb0; C. in a fluidized-bed reactor () by means of an oxygen-containing gas. To improve the utilization of energy it is proposed to introduce a first gas or gas mixture from below through at least one gas supply tube () into a mixing chamber region () of the reactor (), the gas supply tube () being at least partly surrounded by a stationary annular fluidized bed () which is fluidized by supplying fluidizing gas. The gas velocities of the first gas or gas mixture and of the fluidizing gas for the annular fluidized bed () are adjusted such that the Particle-Froude-Numbers in the gas supply tube () are between 1 and 100, in the annular fluidized bed () between 0.02 and 2 and in the 25 mixing chamber () between 0.3 and 30.

Method and plant for producing low-temperature coke

The present invention relates to a process for producing metal oxide from metal compounds, in particular metal hydroxide or metal carbonate, in which the metal compound is conveyed into a reactor () with fluidized bed, heated there to a temperature of 650 15 to 1150&#xb0; C. by combustion of fuel, and metal oxide is generated, as well as to a corresponding plant. To improve the utilization of energy, it is proposed to introduce a first gas or gas mixture from below through a gas supply tube () into a mixing chamber () of the reactor (), the gas supply tube () being at least partly surrounded by a stationary annular fluidized bed () which is fluidized by supplying fluidizing gas, andto adjust the gas velocities of the first gas or gas mixture and of the fluidizing gas for the annular fluidized bed () such that the Particle-Froude numbers in the gas supply tube () lie between 1 and 100, in the annular fluidized bed () between 0.02 and 2, and in the mixing chamber () between 0.3 and 30.

The present invention relates to a method and a plant for the heat treatment of solids containing titanium and possibly further metal oxides, in which fine-grained solids are heated to a temperature of 700 to 950&#xb0; C. in a fluidized bed reactor (). To improve the energy utilization, it is proposed to introduce a first gas or gas mixture from below through a gas supply tube () into a mixing chamber () of the reactor (), the gas supply tube () being at least partly surrounded by a stationary annular fluidized bed () which is fluidized by supplying fluidizing gas. The gas velocities of the first gas or gas mixture as well as of the fluidizing gas for the annular fluidized bed () are adjusted such that the particle Froude numbers in the gas supply tube () are between 1 and 100, in the annular fluidized bed () between 0.02 and 2 and in the mixing chamber () between 0.3 and 30.

Fluidized bed method and plant for the heat treatment of solids containing titanium

A method for the heat treatment of solids containing iron oxide, in which fine-grained solids are heated to a temperature of about 630&#xb0; C. in a fluidized-bed reactor (). To improve the utilization of energy, it is proposed to introduce a first gas or gas mixture from below through a supply tube () into a mixing chamber () of the reactor (), the gas supply tube () being at least partly surrounded by a stationary annular fluidized bed () which is fluidized by supplying fluidizing gas. The gas velocities of the first gas or gas mixture and of the fluidizing gas for the annular fluidized bet () are adjusted such that the Particle-Froude-Numbers in the gas supply tube () are between 1 and 100, in the annular fluidized bed () between 0.02 and 2, and in the mixing chamber () between 0.3 and 30.

The present invention relates to a method and a plant for the heat treatment of solids containing iron oxide, in which fine-grained solids are heated to a temperature of 700 to 1150&#xb0; C. in a fluidized bed reactor (). To improve the utilization of energy, it is proposed to introduce a first gas or gas mixture from below through at least one gas supply tube () into a mixing chamber region () of the reactor (), the gas supply tube () being at least partly surrounded by a stationary annular fluidized bed () which is fluidized by supplying fluidizing gas. The gas velocities of the first gas or gas mixture and of the fluidizing gas for the annular fluidized bed () are adjusted such that the Particle-Froude-Numbers in the gas supply tube () are between 1 and 100, in the annular fluidized bed () between 0.02 and 2, and in the mixing chamber () between 0.3 and 30.

Method and plant for the heat treatment of solids containing iron oxide using a fluidized bed reactor

According to the invention, a fluidizing gas is introduced upwards into the fluidized bed ( ) through a valve grid ( ), said stationary fluidized bed ( ) containing solids with different grain sizes. A supply pipe ( ) is disposed in the area of the fluidized bed, the mouth of said pipe being located above the valve grid ( ) and its outlet ( ) leading outwards from the fluidized bed ( ). Part of the solids located above the valve grid ( ) is blown into the supply pipe by a gas jet ( ) which is directed upwards and fed separately from the fluidizing gas and pneumatically evacuated from the fluidized bed through the supply pipe ( ). Normally, the flow speed of the gas in the supply pipe is at least two times higher than the speed of the fluidizing gas in the fluidized bed.

Process for removing relatively coarse-grained solids from a stationary fluidized bed

A process of continuously conveying granular solids from a first zone with a pressure of 4 to 16 bar through a descending line and via an ascending line to a second zone with a pressure which is lower than in the first zone by 3 to 15 bar, by means of a gaseous medium. To ensure that the pressure between two regions can be reduced at low cost and with little maintenance effort when continuously conveying granular solids, a gaseous medium is injected into a tube through an upwardly directed nozzle at the point where the granular solids are conveyed through a descending line into an ascending line.

Process for conveying granular solids

Process for producing Iron carbide wherein, in a first stage, Iron ore is reduced to sponge iron using a reducing gas containing at least 90% hydrogen, on a nitrogen-free basis, to produce a sponge iron having a carbon content of less than 1% wt.; then in a second stage the sponge iron is fluidized at a temperature of 500 to 800&deg; C. with a methane-containing fluidizing gas in a fluidized bed reactor wherein the water content of the gas in the reactor is not more than 1.5% wt., to produce a product wherein at least 85% of the iron content is in the form of Fe C.

Method for producing iron carbide from granulated sponge iron

An end product containing iron carbide (Fe C) is produced from an intermediate product consisting of granular, directly reduced iron. Said intermediate product is supplied by an iron ore reduction plant and is fed to a carburization reactor. Liquid hydrocarbons are conveyed to the carburization reactor at temperatures of 500 to 900&deg; C., at least part of the granular, directly reduced iron being subjected to a swirling movement. The end product removed from the carburization reactor consists of 5 to 90 wt. % Fe C. A fluidization gas containing methane and hydrogen can be added to the carburization reactor in addition to the hydrocarbons.

Method for producing a mixture of iron carbide and granular, directly reduced iron

A process for producing chlorine and iron oxide from iron chloride (which may be generated as a by-product of the direct chlorination of titaniferous ores) comprises the steps of converting ferrous chloride to ferric chloride by reaction with chlorine, separating the solids from the gaseous products, reacting the gaseous ferric chloride with oxygen, condensing unreacted ferric chloride onto iron oxide particles, separating the gaseous products from the iron oxide particles and recycling the iron oxide particles to the oxidation or condensation step.

Treatment of iron chloride from chlorination dust

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Friedrichsdorf, Germany

Martin Hirsch