Method and device for charging coal-containing material and iron carrier material

Patent metadata

Field	Value
Publication number	US-9470456-B2
Application number	US-201214118849-A
Country	US
Kind code	B2
Filing date	May 9, 2012
Priority date	May 19, 2011
Publication date	Oct 18, 2016
Grant date	Oct 18, 2016

Abstract

A melter gasifier of a smelting reduction installation is charged by bringing together coal -containing material in lump form and iron carrier material (which may be hot) before and/or while they enter the melter gasifier. The ratio of the combined amounts of iron carrier material and coal-containing material in lump form is variable. The combined amounts of iron carrier material and coal-containing material in lump form are distributed over the cross section of the melter gasifier by a dynamic distributing device, and the ratio of the combined amounts of the iron carrier material and coal-containing material in lump form is set depending on the position of the dynamic distributing device.

First claim

The invention claimed is:

1. A method for charging material, comprising lumped carbonaceous material and iron carrier material, into a melter gasifier of a smelting reduction plant, the method comprising:
combining the lumped carbonaceous material and the iron carrier material before and/or during entry into the melter gasifier in a ratio of combined quantities of iron carrier material and lumped carbonaceous material, with variability in the ratio controlled by a control device; and
distributing the combined quantities of iron carrier material and lumped carbonaceous material, in the ratio of the combined quantities of iron carrier material and lumped carbonaceous material, over a cross-section of the melter gasifier using a dynamic distributing device, thereby forming a material bed in the melter gasifier; and
during the distributing, capturing at least one property of a surface of a material bed formed in the melter gasifier and setting, by the control device, the ratio of the combined quantities of iron carrier material and lumped carbonaceous material as a function of the at least one property.

2. The method as claimed in claim 1 , wherein the iron carrier material is hotter than the lumped carbonaceous material when combined therewith.

3. The method as claimed in claim 1 , wherein the at least one property of the surface of the material bed is at least one of a height level and a height profile of the material bed.

4. The method as claimed in claim 1 , wherein the at least one property of the surface of the material bed is a temperature profile at the surface of the material bed.

5. The method as claimed in claim 4 , further comprising obtaining information relating to a run-off sequence during operation of the melter gasifier,
wherein the ratio of the combined quantities of iron carrier material and lumped carbonaceous material is set by the control device as a function of also the information relating to the run-off sequence during operation of the melter gasifier.

6. The method as claimed in claim 5 , further comprising, during the distributing:
varying a movement pattern of the dynamic distributing device; and
determining a position of the dynamic distributing device.

7. The method as claimed in claim 6 , wherein at least one of a grain size distribution of the iron carrier material and a lump size of the lumped carbonaceous material is selected as a function of also the position of the dynamic distributing device.

8. The method as claimed in claim 6 , wherein at least one of a type of charged iron carrier material and a type of the lumped carbonaceous material is selected as a function of also the position of the dynamic distributing device.

9. An apparatus for charging material, including lumped carbonaceous material and iron carrier material, into a melter gasifier of a smelting reduction plant, comprising:
at least one carbon charging bin for lumped carbonaceous material;
at least one iron charging bin for iron carrier material;
a first discharge line for the lumped carbonaceous material emerging from the at least one carbon charging bin, the first discharge line including a first conveyor device regulating discharge of the lumped carbonaceous material;
a second discharge line for the iron carrier material emerging from the at least one iron charging bin, the second discharge line including a second conveyor device regulating discharge of the iron carrier material;
an input device, receiving the lumped carbonaceous material and the iron carrier material from the first and second discharge lines and inputting combined material into the melter gasifier, including a dynamic distributing device distributing the material during the inputting;
at least one control device controlling the first conveyor device and/or the second conveyor device; and
a capture device capturing properties of a surface of a material bed formed in the melter gasifier.

10. The apparatus as claimed in claim 9 , wherein
the at least one iron charging bin includes two iron charging bins for the iron carrier material, and/or
the at least one carbon charging bins includes two carbon charging bins for the lumped carbonaceous material.

11. The apparatus as claimed in claim 9 , wherein at least one of the first conveyor device and the second conveyor device includes material flow gates and/or screw feeders and/or cellular wheel sluices.

12. The apparatus as claimed in claim 11 , further comprising a regulating device regulating a distribution track realized during the inputting by the dynamic distributing device.

13. The apparatus as claimed in claim 12 , wherein the at least one control device further controls the first conveyor device and/or the second conveyor device as a function of a position of the dynamic distributing device and the distribution track.

14. The apparatus as claimed in claim 9 , wherein the at least one control device further controls the first conveyor device and/or the second conveyor device as a function of the properties of the surface of the material bed captured by the capture device.

15. The apparatus as claimed in claim 14 , wherein
the at least one carbon charging bin includes two carbon charging bins for the lumped carbonaceous material, and
the at least two carbon charging bins are filled with respectively different lump sizes of the lumped carbonaceous material and/or respectively different types of the lumped carbonaceous material.

16. The apparatus as claimed in claim 14 , wherein
the at least one iron charging bin includes two iron charging bins for the lumped carbonaceous material, and
the at least two iron charging bins are filled with respectively different grain sizes of the iron carrier material and/or respectively different types of the iron carrier material.

17. The method as claimed in claim 1 , further comprising:
during the distributing, determining a position of the dynamic distributing device,
wherein in the setting, the control device sets the ratio of the combined quantities of iron carrier material and lumped carbonaceous material as a function of also the position of the dynamic distributing device.

18. The apparatus as claimed in claim 9 , wherein:
the control device determines a position of the dynamic distributing device, and
the control device sets the ratio of the combined quantities of iron carrier material and lumped carbonaceous material as a function of the position of the dynamic distributing device.

Assignees

• Aichinger Georg
• Berner Franz
• Eder Thomas
• Millner Robert
• Plaul Jan-Friedemann
• Rein Norbert
• Scherney Andreas
• Wieder Kurt
• Wurm Johann
• Primetals Technologies Austria GmbH

Inventors

• Aichinger Georg
• Berner Franz
• Eder Thomas
• Millner Robert
• Plaul Jan-Friedemann
• Rein Norbert
• Scherney Andreas
• Wieder Kurt
• Wurm Johann

Classifications

• F27D21/0035

  Devices for monitoring the weight of quantities added to the charge · CPC title

• C21B13/143

  Injection of partially reduced ore into a molten bath · CPC title

• C21B13/0066

  Preliminary conditioning of the solid carbonaceous reductant · CPC title

• F27D3/08

  Screw feeders; Screw dischargers · CPC title

• F27D19/00

  Arrangements of controlling devices · CPC title