Electrolysis apparatus for the production of iron with an improved gas permeable anode plate

Patent metadata

Field	Value
Publication number	US-2025051946-A1
Application number	US-202218719823-A
Country	US
Kind code	A1
Filing date	Dec 14, 2022
Priority date	Dec 15, 2021
Publication date	Feb 13, 2025
Grant date	—

Abstract

An electrolysis apparatus for the production of iron through reduction of iron ore by an electrolysis reaction, the electrolysis reaction emitting a gas, the apparatus including a casing. The casing including a gas permeable anode plate being made of a cellular material, a cathode plate, both facing each other and being separated by an electrolyte chamber.

First claim

What is claimed is:

1 - 12 . (canceled)

13 : An apparatus for producing iron through reduction of iron ore by an electrolysis reaction, the electrolysis reaction emitting a gas, the apparatus comprising:
a casing including a gas-permeable anode plate and a cathode plate on a first side of the gas-permeable anode plate, the gas-permeable anode plate and the cathode plate facing each other and being separated by an electrolyte chamber, the casing being provided with means for circulating an electrolyte within the electrolyte chamber and with means to supply iron ore to the electrolyte chamber, the casing further including a degassing unit comprising a gas recovery part extending along a second side of the gas-permeable anode plate to the electrolyte chamber and being able to recover gas from the electrolysis reaction escaping through the gas-permeable anode plate, the second side being opposite of the first side, the gas-permeable anode plate being made of a cellular material comprising a plurality of cells extending from the electrolyte chamber to the gas recovery part, each cell being delimited by a circumferential wall and being open on the first and second sides of the gas-permeable anode plate.

14 : The apparatus according to claim 13 , wherein the cells are regularly and periodically repeated on the gas-permeable anode plate.

15 : The apparatus according to claim 13 , wherein the circumferential wall of each cell has a hexagonal cross section.

16 : The apparatus according to claim 15 , wherein two adjacent cells share one straight wall of their respective hexagonal circumferential wall.

17 : The apparatus according to claim 15 , wherein a hexagon formed by the hexagonal circumferential wall of each cell is an equilateral hexagon.

18 : The apparatus according to claim 17 , wherein the equilateral hexagon is defined according to the formula e/h<0.1, e being a thickness of the hexagonal circumferential wall and h being a distance between two opposite parallel straight walls of the hexagon.

19 : The apparatus according to claim 13 , wherein the cellular material forming the gas-permeable anode plate has a honeycomb structure.

20 : The apparatus according to claim 15 , wherein the cellular material of the gas-permeable anode plate is produced by welding a plurality of corrugated sheets to each other.

21 : The apparatus according to claim 13 , wherein the casing comprises a cover plate facing the gas-permeable anode plate, wherein the gas-permeable anode plate comprises at least one T-shape groove extending transversally along a second side of the gas-permeable anode plate to the electrolyte chamber and receiving a corresponding T-shape rod, and wherein fastening means cross the cover plate up to the T-shape rod thus maintaining the gas-permeable anode plate at a required distance from the cathode plate.

22 : The apparatus according to claim 13 , wherein the gas-permeable anode plate is made of nickel alloy.

23 : The apparatus according to claim 13 , wherein the apparatus is electrically supplied by renewable energy.

24 : The apparatus according to claim 13 , wherein the gas-permeable anode plate has a thickness e A from 5 to 50 mm.

Assignees

• Arcelormittal
• John Cockerill

Inventors

• Lavelaine De Maubeuge Hervé
• Van Hee Luc
• Flandre Cédric

Classifications

• Y02P10/134

  by avoiding CO2, e.g. using hydrogen · CPC title

• C25C7/06

  Operating or servicing · CPC title

• C25C7/02 Primary

  Electrodes (consumable anodes for the refining the metals C25C1/00 - C25C5/00); Connections thereof · CPC title

• C25C1/06 Primary

  or iron group metals, refractory metals or manganese · CPC title