WO2017055419A1

WO2017055419A1 - Method and device for charging iron carrier material

Info

Publication number: WO2017055419A1
Application number: PCT/EP2016/073219
Authority: WO
Inventors: Karl-Heinz Beham; Markus Leopoldseder; Reinhard Pum; Norbert Rein; Karl Zehetbauer; Johann Wurm
Original assignee: Primetals Technologies Austria GmbH
Priority date: 2015-10-02
Filing date: 2016-09-29
Publication date: 2017-04-06
Also published as: RU2701773C1; CN106987671A; KR20180058830A; EP3150729A1; CN207047271U

Abstract

The invention relates to a method for charging material, comprising iron carrier material (2a) and particulate coal-containing material (2b), into a melter gasifier (3) of a smelting reduction system. The iron carrier material (2a) is first pre-heated and/or reduced in a shaft (5) which is gassed with reduction gas, and the material is then drawn out of the shaft (5) at a largely constant volumetric flow rate and introduced into a buffer container (7). The material is then supplied from the buffer container (7) to a dynamic distribution device at a variable volumetric flow rate in order to distribute the material over the cross-section of the melter gasifier (3). In the process, the iron carrier material (2a) and the particulate coal-containing material (2b) are combined before and/or while entering the melter gasifier (3), and the ratio of the combined quantities of the iron carrier material (2a) and the particulate coal-containing material (2b) can be varied. The invention further relates to a device for carrying out the method.

Description

description

Description of the Invention Method and Apparatus for Charging

Iron carrier material

Technical Field The present invention relates to a process for charging material comprising iron carrier material into a melter gasifier

Smelting reduction plant. State of the art

In smelting reduction processes for the production of pig iron in a melter gasifier, such as

For example, COREX® or FINEX®, material, including carbonaceous material and iron carrier material and aggregates, is charged into the melter gasifier. The carbonaceous material is with

Gasifying oxygen to a reducing gas, thereby releasing the heat needed to melt the iron carrier material.

Charcoal-containing material is, for example, chunky coal or carbonaceous briquettes; it is in a reservoir for carbonaceous material at

Ambient stored, from which it is entered into the melter gasifier.

The term iron carrier material in the context of the present text comprises iron both in oxidized, for example oxidic, form, as well as in

reduced, so metallic, form. By doing Iron carrier material, the iron may be in both forms; then, for example, of prereduced iron carrier material is the speech, which is not yet completely reduced compared to metallic shape, however, compared to a previous state is already more reduced. It can also be present in only one of the two forms.

The iron carrier material is for example in the case of FINEX® mostly hot compacted iron (HCl). The iron carrier material may also be hot briquetted iron (HBI) or, preferably, hot so-called direct reduced iron (DRI, also called sponge iron). With FINEX, HBI or DRI can also be charged, especially when the system is started or stopped, if insufficient hot or cold HCl is available. It may also be metallized material or reduction grade that does not yet have it as HBI or HCl or DRI

to qualify. HBI is a hot-pressed iron carrier material with a very high content of metallic iron - often over 90% metallization - and a density of about 5 g / cm ³ , which allows transport by ship, for example. The material is in briquette, usually> 25 mm, isolated, so it is lumpy. Although HBI is compressed in a hot state, for example> 650 ° C, it can also be cold fed to the FINEX® process after cooling and transport. HCl is hot pressed with aggregates

Iron carrier material, with compared to HBI

lower proportion of metallic iron. In this case, HCl has a temperature of about 550-650 ° C. Its density is just under 4 g / cm ³ . HCl is in the process of Pig iron production processed directly after its production, where it is crushed by means of crushers used in an advantageous form for a melter gasifier.

DRI is non-compressed iron carrier material with a high proportion of metallic iron - analogous to HBI, since HBI is compressed DRI.

In the case of COREX®, the iron carrier material is, for example, hot, so-called direct reduced iron (DRI), or equivalent iron carrier material with a metallization that does not yet qualify it as DRI.

In the COREX® process, the iron carrier material is gassed from a hot reducing gas

Reduction shaft discharged and transported by gravity over fall legs, and optionally distribution flaps in the melter gasifier. At early

Embodiments of the FINEX® process were, in a corresponding procedure, iron carrier material, for example HCl - the fine-particle form obtained from the fluidized beds of the FINEX® process

Iron carrier material compressed to HCl - transported from a so-called HCI-Bin, which is gassed with hot reducing gas, into the melter gasifier. The

The aim of fumigation is to preheat and reduce the iron carrier material.

Pyrolysis of coal or carbonaceous briquettes at elevated temperatures leads to formation and

Release of volatile hydrocarbons and tar. Therefore, the carbonaceous material can not be stored together with hot iron carrier material in a storage container, because by the Contact with the hot iron carrier material triggered formation and release of volatile

Hydrocarbons and tar would lead to sticking and clogging in, for example, the reservoir into which the material passes to the melter gasifier, or pressure equalization lines.

Charging of carbonaceous material and

Iron carrier material in a melter gasifier so far is usually separated from each other.

Carbonaceous material, for example, from a reservoir for carbonaceous material over

Augers one centrally in the dome of the

Melter gasifier attached to the distribution device, from which the carbonaceous material when entering the melter gasifier on the

Cross section of the melter gasifier is distributed.

Iron carrier material is introduced into the melter gasifier, for example, via several drop legs arranged over the circumference of the dome of the melter gasifier.

The separate addition of carbonaceous material and iron carrier material in the

Melt carburetor causes a lot of effort in the construction and maintenance of the necessary parts for the separate addition parts. In addition, in a separate addition carbonaceous material and

Iron carrier material in the material bed in

Melter carburetor not sufficiently controlled distributed - it can, for example, for education

vertical islands of iron carrier material - which adversely affects the meltdown gasification process. From EP0299231A1 it is known that the carbonaceous

Material and the iron carrier material through the same opening centrally in the melter gasifier

overact. In such a central charging according to EP0299231A1, it is disadvantageous that just the area of the material bed is supplied with fresh material in which as a so-called "dead man" in the meltdown gasification process preheating and

Reduction processes run less well than in the edge region of the melter gasifier. In addition, fine and heavy material remains concentrated due to segregation processes in the central area of the material bed, while coarser and lighter material migrates towards the edge area. Accordingly, the mixture charged onto the material bed is partially and uncontrollably separated again.

Also from WO2012156243 is a method for

Charging lumped carbonaceous material and hot iron carrier material into a melter gasifier of a smelting reduction plant. Here are the lumpy carbonaceous material and the hot

Iron carrier material in changeable ratio united before and / or while in the

Einschmelzvergaser occur and by means of a

dynamic distributor are distributed over the cross section of the melter gasifier.

The iron carrier material is from a

Which, unlike the one used in the COREX® process or early FINEX®

Method described reduction shaft or HCI bin is gassed. This has the disadvantage that, for example, in problems with the delivery of HCl, the melter gasifier is not easy with a other, a much lower degree of reduction, type of iron carrier material - such as lumpy iron ore or pellets - can be operated. Such problems would therefore lead to the operation of the

Einschmelzvergasers initially set and later would have to be restarted, which is a

considerable effort. Use of suitable iron carrier material over the coal line would be possible in principle, but would costly purchase of appropriate material with a high proportion of

make necessary metallic iron.

Summary of the invention

Technical task

It is the object of the present invention to provide, in comparison with the prior art, flexible methods and apparatuses for batching material which can be handled in terms of availability of different types of iron carrier material, which material comprises, preferably hot, iron carrier material, and carbonaceous material.

Technical solution

This task is solved by

A method of charging material comprising iron carrier material and lumped carbonaceous material

Material, in a melter gasifier one

Schmelzreduktionsanläge,

characterized in that the iron carrier material

first

is preheated and / or reduced in a shaft fumigated with reducing gas,

then withdrawn from the well with largely constant volume flow and entered into a buffer tank,

and then

is supplied from the variable volume buffer vessel to a dynamic distribution device for distributing the material across the cross section of the melter gasifier;

wherein the iron carrier material and the lumped carbonaceous material are combined prior to and / or entering the melter gasifier, the ratio of the combined amounts of

Iron carrier material and changeable from lumped carbonaceous material. Advantageous Effects of the Invention

The shaft is fumigated with reducing gas; it may, for example, be a reduction shaft or HCI bin.

Reduced means that the degree of reduction of the

Iron carrier material is increased compared to the degree of reduction when entering the slot. Preference is given to a degree of reduction of at least 50%, preferably at least 70%, when withdrawn from the shaft. The degree of reduction RD is a measure of the degradation of the oxygen from the oxide:

RD = (1 - (O / (1.5 * Fe _tot ))) * 100. The metallization MG is defined as:

MG = Fe _met / Fe _dead * 100.

In the phrase "a buffer container", it is meant as an indefinite article, not as a number word, there may be multiple buffer containers, or even a single buffer container Conditions operated, which, for example, largely

Constant volume flow in the input of iron carrier material and largely constant volume flow of the reducing gas comprises. In order to ensure a largely constant residence time in the shaft, a substantially constant volume flow when removing iron carrier material from the shaft must face it. A variable volume flow when pulling out of the shaft is undesirable and brings

Problems with controlling the operations in the shaft; For example, dust can deposit too much locally and thus make the gasification uneven and lead to disturbances in the volume flow. Under

Volumetric flow per unit of time from a location A to a location B transported volume to understand.

Largely constant volume flow is to be understood in the technical sense and includes also by regulation and / or control to a given operating condition - such as type of raw materials used, pressure, temperature, determined - occurring fluctuations of up to +/- 10% of the value desired for a given operating condition. It is largely consistent the respective operating phase related. It can

different operating phases are desired

For example, depending on the availability and quality of an iron carrier material and / or carbonaceous material and / or reducing gas, an operator may be limited to the parameters of an operating phase

Change parameters of another phase of operation, which may necessitate a different residence time in the shaft, as was necessary in the previous phase of operation.

The iron carrier material withdrawn from the shaft is fed into a buffer container,

and then

from the variable volume buffer tank of a dynamic distribution device for the distribution of the material from the buffer tank

drawn iron carrier material comprises, fed over the cross section of the melter gasifier.

In contrast to the deduction from the shaft is the

Volumetric flow when feeding from the buffer tank to the distribution device not largely constant, but variable. Depending on the desired distribution pattern in melter gasifier, the charging of more or less iron carrier material may be desired, so that the distributor more or less

Iron carrier material is supplied. Accordingly, the volume flow out of the buffer tank

changeable, whereby changeable here is to be understood as opposite to constant. Since the input in the

Buffer tank with largely constant

Volume flow occurs, the level of the iron carrier material changes in the buffer tank during operation. The dimensioning of the buffer tank is so choose that he is under regular

Operating conditions of the shaft and the

Melting gasifier is never completely emptied and never overflows.

A certain minimum level of the buffer container is desired because the iron carrier material then forms a barrier to a gas flow from the melter gasifier towards the shaft.

It is preferred that the volume flow from the

Do not allow the buffer tank to drop to 0 - that is, greater than 0 - to avoid problems associated with starting up ferrous material feeders.

The proposed method makes it possible to connect a largely constant volume flow from the shaft to a variable volume flow when distributed in the melter gasifier. Thus, the distribution pattern can be easily controlled without affecting the withdrawal from the shaft unfavorable. In addition, in the process, it is possible to react more flexibly to the availability of different types of iron carrier material, because it is possible to reduce and / or preheat in the fumigated shaft.

The mode of operation according to WO2012156243 is not

suitable material from a fumigated shaft

feed, because the material flow there vary greatly and can also stop if necessary.

The term melter gasifier does not include a blast furnace. In a blast furnace, essentially layers of coke and iron carriers are added with aggregates Ambient conditions added from above. Pyrolysis and degassing of coal does not take place in the blast furnace, but already during the production of the coke, which is charged into the blast furnace. The temperatures in the

Blast furnace temperatures are around 80 to 250 ° C.

In a meltdown gasification process in one

The melter gasifier according to the invention, on the other hand, does not charge coke, but carbonaceous material, and the charged carbonaceous material is in the

Melt carburetor pyrolyzed. The in the

Melting carburetor cup, in the range of material is charged into the melter gasifier, prevailing temperatures are about 1000 ° C. The iron carrier material contains elemental iron and / or iron oxide. The iron carrier material is either in particulate form = in the sense of the present application> 6 mm before, or, for example, due to a technical screening or an upstream production step - such as press or crusher - lumpy with a proportion of undersize, where Unterkorn a grain size of less than 6 mm is to be understood. For example, at

Iron carrier material such as HCl, DRI, HBI, lump, pellets, sinter. Or the iron carrier material is present as a so-called, possibly particulate, fine grain preferably less than 10 mm before - for example, as a sintering feed when used in FINEX® or FINEXO-DRI before a hot compaction.

It is preferably hot iron carrier material. Under hot iron carrier material is

Iron carrier material with a temperature of over 100 ° C, preferably above 200 ° C, more preferably above 300 ° C to understand.

The reducing gas is preferably hotter than that

Iron carrier material, with a temperature above 600 ° C, preferably above 700 ° C, more preferably above 750 ° C. Not only that can be done with hot reducing gas

Iron carrier material can be reduced, but also preheated to hot iron carrier material.

Likewise, optionally existing aggregates can be calcined.

A dynamic distribution device is to be understood as a distribution device which can be moved in a controlled manner during the distribution process.

Thereby, an outlet port of the dynamic distribution device can be brought into various positions. Accordingly, material can be directed to different locations of the material bed in the melter gasifier.

The dynamic distribution device can be, for example, a rotary chute or a cardanically suspended chute, which can be moved in such a way that its outlet opening can be, for example, circular or spiral or arbitrarily predeterminable paths

describes, with different distribution tracks can be selected.

Advantageously, the movement pattern of the dynamic distribution device is changeable.

The material also includes stuccoed carbonaceous material, and the iron carrier material and the lumped carbonaceous material are combined before and / or as they enter the melter gasifier, and it is the ratio of the combined Quantities of iron carrier material and of stuccoed carbonaceous material changeable.

The combined amounts of iron carrier material and particulate carbonaceous material are distributed across the cross section of the melter gasifier by means of the dynamic distributor, and the ratio of the combined amounts of iron carrier material and particulate carbonaceous material is preferred depending on the position of the dynamic

Distributor set.

For this purpose, depending on the position of the dynamic distribution device, the supply of

Iron material and / or the supply of carbonaceous material to the dynamic distribution device controlled and / or regulated.

On the in a process according to the invention in the melter gasifier - preferably on the

Iron carrier route - charged surcharges such as

For example, limestone and / or dolomite and / or quartz is not discussed in detail in the context of this application.

In such a process, the melter gasifier must have fewer equipment parts and openings for charging than when particulate carbonaceous material and iron carrier material separated from each other in the

Enter melter gasifier. By co-charging particulate carbonaceous material and, preferably, hot, iron carrier material, the problem associated with separate charging may occur

uncontrolled and unwanted inhomogeneous

Distribution, such as formation of vertical islands of iron carrier material in the melter gasifier, be avoided. In addition, there is no expense associated with the construction and maintenance of the parts required for separate charging.

With regard to further embodiments and associated advantages of co-charging iron carrier material and particulate carbonaceous material by means of a dynamic distributor when adjusting the combined amounts depending on the position of the dynamic distributor, reference is made to FIGS

WO2012156243, the entire disclosure of which is included in the disclosure of the present application.

Another object of the present application is a

Apparatus for charging material comprising iron carrier material and lumped carbonaceous material

Material, in a melter gasifier one

Schmelzreduktionsanläge,

with at least one shaft fumigated with reducing gas, triggering devices for the withdrawal of reduced and / or preheated iron carrier material from the shaft with largely constant volume flow,

Input devices for inputting this withdrawn iron carrier material into a buffer container,

with a dynamic distribution device for distributing the iron carrier material from the buffer container over the cross section of the sealing gasifier,

and iron material supply means for feeding the iron carrier material from the buffer container to the variable volume dynamic distribution device, wherein also a reservoir for the lumpy carbonaceous material is present, as well as a

Feed device for feeding from the chunky

Carbonaceous material from the reservoir to the dynamic distribution device with variable volume flow.

Iron carrier material can be charged according to the invention with this device.

The shaft is, for example, a fixed-bed shaft, for example a fixed-bed shaft with fixed bed material charge moving in countercurrent to the reducing gas. There may be one or more take-off devices. Preferably, several extraction devices are available.

The trigger devices can, for example

Conveyor screws or rotary valves include.

Preferably, they are screw conveyors.

Input devices for entering the withdrawn

Iron carrier material in a buffer container may comprise, for example, downpipes. Preference is given to downpipes, through which the material from the end of the trigger device, for example a screw conveyor falls under the action of gravity in the buffer tank. It may be one or more buffer tanks

Buffer tank be present. Preferably, several buffer containers are present. It can be any extraction device over the

Input device in only one assigned to it

Buffer tank open, or it can be several

Discharge devices open into a common buffer tank.

It can be one or more

Iron material supply devices may be present.

Preferably, several iron material supply devices are present.

The iron material supply devices can

For example, include screw conveyors. Preference is given to screw conveyors, as screw conveyors easily control the volume flow and / or can be regulated.

Preferably, the dynamic distribution device comprises a device for controlling and / or regulating at least the iron material supply device

depending on the position of the dynamic

Distributor device.

Control or regulation are here meant the meaning of the change of the volume flow. When the iron material supply device is around

Screw conveyor, the control device and / or control, for example, influence the speed of the screw conveyor to change the flow rate. According to the invention, there is also a reservoir for particulate carbonaceous material, and a supply device for supplying the carbonaceous material from the reservoir to the variable volume dynamic distribution device. Preferably, the dynamic distribution device also includes a device for controlling and / or regulating the supply device for supplying carbonaceous material

depending on the position of the dynamic

Distributor device.

The device for controlling and / or regulating at least the iron material supply device

and the device for controlling and / or regulating the supply device of carbonaceous material as a function of the position of the dynamic

Distributor may also be integrated together in a device. You can directly

interact with each other, or via a higher-level tax and / or rule.

The dynamic distribution device may be, for example, a gimbaled,

preferably powered by 2 axles, chute or a rotary chute act.

Description of the embodiments

With reference to the following schematic exemplary figures, the present invention will be explained with reference to embodiments.

Figure 1 shows an inventive device in an oblique view from the top side.

Figure 2 shows a section of the device of Figure 1 in a side view. FIG. 1 shows a device 1 according to the invention for charging material 2a, 2b, comprising iron carrier material 2a and lumped carbonaceous material 2b, into a melter gasifier 3 of FIG

Smelting reduction plant. The lower section of a gassed with reducing gas 4 shaft 5, for example, an HCI bins, is shown. Iron carrier material 2a is preheated after the input into the shaft 5, not shown, at its upper end, not shown, in the shaft by the reducing gas and / or reduced. After passing through the shaft from top to bottom, the preheated and / or reduced iron carrier material 2a is withdrawn from the shaft 5 at the lower end of the shaft 5 with largely constant volume flow. That happens with

Deduction devices for the withdrawal of reduced and / or preheated iron carrier material 2a from the shaft 5 with largely constant volume flow, in the case shown, several screw conveyors 6 - shown as spirals - in corresponding

Culverts. After the withdrawal from the shaft 5, the iron carrier material 2a is entered into buffer container 7; shown are two buffer container 7. The input to the buffer container 7 via

Input devices for entering this withdrawn iron carrier material in a buffer container 7, in the case shown are downpipes 8. From the end of the screw conveyor 6 falls the iron carrier material 2a under the action of gravity in the buffer tank 7. Shown are several downpipes 8, wherein in each case a plurality of screw conveyors 6 open via the respective drop tube 8 assigned to them into a common buffer container 7. From the buffer container 7, the iron carrier material 2a is a dynamic Distributor 9 for distribution over the

Cross section of the melter gasifier 3 supplied; this happens with variable volume flow. This feed takes place with iron material feeders for feeding the iron carrier material from the buffer container to the variable volume dynamic distribution device 9, in the present case spiraled screw conveyors 10, which feed towards the center of the melter gasifier.

The dynamic distribution device 9 is shown schematically as a rotary chute. It distributes the iron carrier material in the interior of the melter gasifier over the cross section. The dynamic distribution device comprises a device 11 for controlling and / or regulating the screw conveyor 10 in dependence on the position of the dynamic distribution device 9. It can influence the speed of the screw conveyor 10 to the

Change volume flow; schematically represented by a connection between a screw conveyor 10 and device 11. The dynamics of the distributor is shown schematically by dashed lines

Illustration of another position of the rotary chute, as well as arrows that sketch the adjustability by rotation about a vertical axis and pivoting about a horizontal axis.

In the illustrated embodiment is also a

Reservoir 12 for particulate carbonaceous material 2b present, as well as a feed device for supplying carbonaceous material from the reservoir 12 to the dynamic distributor 9 with

Variable volume flow, in the present case shown as a spiral conveyor screw 13. The dynamic distribution device also includes a device 14 for controlling and / or regulating the screw conveyor 13 in Dependence on the position of the dynamic

Distributor 9. For clarity, not a connection between the device 14 and auger 13 is shown.

The device 11 for controlling and / or regulating the screw conveyors 10 and the device 14 for controlling and / or regulating the screw conveyors 13 are integrated together in a device 15. They can interact directly with each other, or through a higher level of control and / or regulation.

The iron carrier material 2a and the lumpy

Carbonaceous material 2b is combined before entering the melter gasifier, and the ratio of the combined amounts of iron carrier material 2a and particulate carbonaceous material 2b is

changeable.

The ratio of the combined amounts of iron carrier material 2a and particulate carbonaceous material 2b is adjusted depending on the position of the dynamic distributor 9.

Figure 2 shows a section of the device of Figure 1 in a side view with a little less

Details.

Although the invention has been further illustrated and described in detail by the preferred embodiments, the invention is not limited by the disclosed examples, and other variations can be derived therefrom by those skilled in the art without departing from the scope of the invention

To leave the scope of the invention ". The disclosure of the present application also includes the entire disclosure of WO2012156243.

List of quotations

Patent literature

EP0299231A1

WO2012156243

LIST OF REFERENCE NUMBERS

I device for

Charging material

2a iron carrier material 2b Carbonaceous material

3 melter gasifier

4 reducing gas

5 shaft

6 screw conveyor

7 buffer tank

8 downpipe

9 dynamic

distributor

10 screw conveyor

II Device for controlling and / or regulating the screw conveyors 10

12 storage tanks

13 screw conveyor

14 Device for controlling and / or regulating the screw conveyor 13

15 device

Claims

claims

A method of batching material comprising iron carrier material (2a) and lumped carbonaceous material (2b) into a melter gasifier (3) of a smelting reduction plant,

characterized in that

the iron carrier material (2a)

first

is preheated and / or reduced in a shaft (5) fumigated with reducing gas (4),

then withdrawn with a largely constant volume flow from the shaft (5) and entered into a buffer tank (7),

and then

from the buffer container (7) with variable

Volume flow of a dynamic distribution device (9) for the distribution of the material over the cross section of the melter gasifier (3) is supplied,

wherein the iron carrier material (2a) and the lumped carbonaceous material (2b) are combined prior to and / or entering the melter gasifier (3), the ratio of the combined amounts of iron carrier material (2a) and particulate carbonaceous material Material (2b) is changeable.

2. The method according to claim 1, characterized in that the volume flow from the buffer tank (7) is kept greater than zero.

3. The method according to claim 1 or 2, characterized

characterized in that it is hot iron carrier material (2a), with a temperature of over 100 ° C, preferably above 200 ° C, more preferably above 300 ° C.

4. The method according to any one of claims 1 to 3, characterized in that the reducing gas (4) is hotter than the iron carrier material (2a), preferably at a temperature above 600 ° C, more preferably above 700 ° C, most preferably over 750 ° C.

5. The method according to any one of claims 1 to 4, characterized in that the ratio of the combined amounts of iron carrier material and lumpy carbonaceous material is adjusted depending on the position of the dynamic distribution device.

6. An apparatus for charging material (1) comprising iron carrier material (2a) and lumped carbonaceous material (2b), in a

Meltdown gasifier (3) of a smelting reduction plant, with at least one shaft (5) fumigated with reducing gas (4),

Deduction devices for the withdrawal of reduced and / or preheated iron carrier material (2a) from the shaft (5) with largely constant volume flow,

Input devices for inputting this withdrawn iron carrier material in a buffer container (7), with a dynamic distribution device (9) for

Distribution of the material across the cross-section of the melter gasifier (3),

and iron material supply means for feeding the iron carrier material (2a) from the buffer tank (7) to the variable volume dynamic distribution device (9); wherein there is also a reservoir (12) for the particulate carbonaceous material (2b), and a supply device for supplying the carbonaceous material from the reservoir (12) to the

dynamic distribution device (9) with variable volume flow.

7. Apparatus according to claim 6, characterized in that several extraction devices are present.

8. Apparatus according to claim 6 or 7, characterized

characterized in that the withdrawal devices

Screw conveyors (6) are.

9. Device according to one of claims 6 to 8, characterized in that a plurality of buffer container (7) are present.

10. Device according to one of claims 6 to 9, characterized in that a plurality

Iron material supply devices are present.

11. Device according to one of claims 6 to 10, characterized in that the

Ferrous material feeders are screw conveyors (10).

12. Device according to one of claims 6 to 11, characterized in that the dynamic

Distributor (9) a device (11) for

Control and / or regulation of at least the

Ferrous material supply device depending on the position of the dynamic distribution device (9)

includes.

13. The device according to claim 6, characterized

in that the dynamic distributor (9) also has a device (14) for controlling and / or regulating the supply device for supplying carbonaceous material

depending on the position of the dynamic distribution device (9)

includes.

14. Device according to one of claims 6 to 13, characterized in that the device (11) for controlling and / or regulating at least the

Ferrous material supply device,

and the device (14) for controlling and / or regulating the supply device for supplying carbonaceous material

depending on the position of the dynamic distribution device

are integrated together in a device (15).