Intermediate Container Segmentation for Steel Slag Separation
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Solution Overview
Problem
Existing continuous steel production methods require high superheating temperatures to prevent deposit formation and ensure smooth metal transport, leading to inefficient energy use and challenges in buffering molten metal without quality loss.
Innovation Solution
A device with a melting vessel and intermediate container featuring a movable weir for slag and liquid metal separation, combined with a heating device for temperature control, allowing for energy-efficient production and buffering of steel without overheating, using a plasma burner or arc heating for tempering and a tiltable intermediate container for adjustable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high superheating temperatures are used in the melting furnace to transport and process liquid metal without deposit formation, then continuous operation is enabled, but energy consumption increases and buffering of molten metal becomes problematic
Solution Approach 1:
The intermediate container is divided into a first collection chamber for slag and a second collection chamber for liquid metal, separated by a weir. This segmentation allows slag to be collected and removed separately, preventing deposit formation in the metal flow path and enabling continuous operation without excessive superheating.
Solution Approach 2:
The intermediate container acts as an intermediary between the melting furnace and downstream processing equipment. It provides a buffer zone where metal can be temporarily stored at lower temperatures, decoupling the continuous melting process from downstream operations and reducing overall energy consumption.
2Productivity
If high superheating temperatures are used to prevent deposit formation, then smooth metal transport is achieved, but buffering of molten metal without quality loss becomes difficult
Solution Approach 1:
By separating slag collection from metal collection through the weir division, the system prevents slag deposits from contaminating the liquid metal. The second collection chamber receives clean metal free from slag particles, maintaining metal quality while enabling buffering capability.
Solution Approach 2:
The slag separation occurs preliminarily in the intermediate container before metal is transferred to downstream processing equipment. This preliminary removal of slag prevents deposit formation and quality degradation in subsequent operations, allowing metal to be buffered at lower temperatures.
3Device complexity
If slag is not separated from liquid metal, then the process is simpler, but deposit formation occurs and continuous operation is compromised
Solution Approach 1:
The intermediate container is segmented into two chambers divided by a weir, creating a simple yet effective slag separation system. The first chamber collects slag while the second chamber collects clean liquid metal, enabling continuous operation without complex additional equipment.
Solution Approach 2:
The system uses the natural density difference between slag and liquid metal to achieve separation. The weir automatically directs slag to the first chamber and metal to the second chamber based on their respective densities, providing self-service separation without requiring additional energy or complex mechanisms.
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
Enables energy-saving continuous steel production with effective slag and metal separation, allowing for economical buffering and flexible operation to compensate for processing interruptions, maintaining metal quality and reducing energy consumption.
Implementation Method 1
the heating device preferably comprises a heating element that comes into direct contact with the material being melted in the first collection chamber
Implementation Method 2
electrodes for arc heating, which are preferably immersible in the molten material in the first collection chamber
Implementation Method 3
separating the slag and the liquid metal such that the slag collects in the first collection chamber, while the second collection chamber contains essentially no slag
Data Source
Figure 1
Figure 2
AI summary
Apparatus (1) and method for the continuous production of metal, preferably steel, wherein the apparatus comprises: a melting vessel (10) for melting metallic feed materials (E), whereby a melt comprising liquid metal (M) and slag (S) is produced; and an intermediate container (20);wherein the intermediate container (20) has a weir (21) which divides the intermediate container (20) into a first collection chamber (22a), into which the molten material can be continuously introduced from the melting vessel (10) via an outlet (11), and a second collection chamber (22b), wherein the two collection chambers (22a, 22b) are in fluid communication via a passage (23), whereby a separation of the slag (S) and the liquid metal (M) takes place such that the slag (S) collects in the first collection chamber (22a), while there is essentially no slag (S) in the second collection chamber (22b), and the device further comprises a heating device (26) which tempers the molten material in the first collection chamber (22a).