Cellular Anode Plate for Iron Electrolysis Gas Management

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Solution Overview

Problem

Existing electrolysis cells for iron production face issues with gas accumulation between the anode and cathode, which hampers electrical conduction and productivity, and current solutions either reduce productivity or increase environmental impact.

Innovation Solution

A gas permeable anode made of cellular material with a honeycomb structure, featuring cells that allow gas evacuation while maintaining electrical conduction, is introduced. This anode is designed to continuously extract gases through its structure, preventing accumulation and ensuring efficient electrolysis.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a traditional non-permeable anode is used, then the structure is simple and easy to manufacture, but gas accumulates between the anode and cathode reducing electrical conduction and productivity

Engineering Contradiction:
Improveelectrical conduction and productivityVSAvoidanode structure complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The anode is constructed from a three-dimensional open-cell foam material with controlled porosity (30-70%). This porous structure allows gases to pass through the anode body to the rear side, preventing gas accumulation between the anode and cathode. The foam material maintains structural integrity while providing sufficient open space for gas permeation, thus preserving electrical conduction and productivity without requiring complex mechanical gas extraction systems.

Inventive Principle:
Principle #31Porous materials

2Productivity

If a permeable anode is used to evacuate gases, then gas extraction is improved, but the anode structure becomes more complex and costly to manufacture

Engineering Contradiction:
Improvegas extraction efficiencyVSAvoidanode manufacturing complexity
Core Design Contradiction:
ProductivityVSEase of manufacture

Solution Approach 1:

The foam-based anode provides inherent gas permeability through its open-cell structure, eliminating the need for complex mechanical extraction systems. The porosity can be controlled during manufacturing (30-70% range) to optimize both gas extraction efficiency and structural strength. This approach simplifies the overall device while maintaining effective gas evacuation capabilities.

Inventive Principle:
Principle #31Porous materials

Solution Approach 2:

The invention controls the porosity parameter of the foam material within a specific range (30-70%) to balance gas permeability and structural integrity. By adjusting this single parameter, the anode can be optimized for different gas extraction requirements while maintaining ease of manufacture through standard foam fabrication processes.

Inventive Principle:
Principle #35Parameter changes

3Duration of action of moving object

If gas accumulates between electrodes, then the electrolysis reaction continues, but electrical conduction deteriorates due to gas insulation

Engineering Contradiction:
Improvecontinuous electrolysis operationVSAvoidelectrical conduction reliability
Core Design Contradiction:
Duration of action of moving objectVSReliability

Solution Approach 1:

The foam anode actively extracts gases from the electrolysis zone by allowing them to permeate through its porous structure to the rear side. This continuous extraction prevents gas accumulation that would otherwise insulate the electrode interface and disrupt electrical conduction. The gas removal mechanism ensures reliable electrical contact is maintained throughout continuous operation.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The porous foam structure provides a continuous pathway for gas escape, ensuring that gases generated during electrolysis are promptly removed from the electrode interface. This maintains reliable electrical conduction and enables continuous operation without interruption from gas accumulation.

Inventive Principle:
Principle #31Porous materials

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The gas permeable anode effectively evacuates gases, enhancing the electrical conduction and productivity of the electrolysis cell while minimizing environmental impact by reducing the need for continuous fresh electrolyte supply.

Implementation Method 1

said gas permeable anode plate being made of a cellular material comprising a plurality of cells extending from the electrolyte flowing chamber to the gas recovery part

Methodology Applied
Scientific EffectPermeation: Permeation

Implementation Method 2

The electrolytic reaction produces pure iron plates at the cathode and gaseous oxygen at the anode

Methodology Applied
Scientific EffectElectrolysis: Electrolysis

Data Source

PatentUS20250051946A1Electrolysis apparatus for the production of iron with an improved gas permeable anode plate
Publication Date: 2025.02.13 ARCELORMITTAL SA
  • US20250051946A1 patent drawing
  • US20250051946A1 patent drawing
  • US20250051946A1 patent drawing

AI summary

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.