Hollow Compressing Element for Dross Metal Recovery
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Solution Overview
Problem
Current methods for handling molten metal processing by-products, such as drosses, are inefficient in recovering metal content, particularly in aluminum processing, due to limitations in cooling rates and control systems, which affect the throughput and effectiveness of metal recovery.
Innovation Solution
A device comprising a compressing element with a hollow interior and fluid flow control elements, connected to an actuator and enclosure, is used to compress and cool the by-products, enhancing metal separation and recovery by directing cooling air through the device to efficiently manage heat transfer and airflow, thereby improving the processing of drosses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional cooling methods are used in dross handling, then the structure is simple, but the cooling rate is insufficient and metal recovery efficiency is low
Solution Approach 1:
The cooling system is segmented into multiple independent channels (first cooling channel and second cooling channel) that can be controlled separately. This allows different cooling rates to be applied to different regions of the dross, optimizing metal recovery while maintaining manageable system complexity through modular design
Solution Approach 2:
The cooling system incorporates dynamic control through adjustable cooling channels and flow rates. The first and second cooling channels can be activated independently with variable flow rates, enabling real-time optimization of cooling parameters to maximize metal recovery efficiency without requiring an overly complex fixed system
2Productivity
If compression force is increased to improve metal separation, then separation efficiency improves, but dross flowability deteriorates
Solution Approach 1:
The system applies periodic compression through the movable pressing wall that oscillates between compressed and relaxed states. This periodic action allows metal separation to occur during compression phases while maintaining dross flowability during relaxation phases, resolving the contradiction between separation efficiency and flowability
Solution Approach 2:
The system dynamically changes compression parameters by adjusting the position and force of the movable pressing wall. By varying compression force, duration, and frequency, the system optimizes metal separation while preventing excessive compression that would harm dross flowability
3Temperature
If cooling air flow rate is increased to improve cooling efficiency, then cooling rate improves, but energy consumption increases
Solution Approach 1:
The cooling system applies different air flow rates to different regions through the first and second cooling channels. By directing higher flow rates only to areas requiring intensive cooling while maintaining lower flow rates elsewhere, the system improves overall cooling efficiency without proportionally increasing energy consumption
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 solution increases the rate of metal recovery from drosses by optimizing cooling and airflow within the dross press, addressing the limitations of existing designs and improving the versatility and effectiveness of the control systems in molten metal processing.
Implementation Method 1
cooling the compressing element by providing a fluid flow into the inlet, along the one or more flow constraining surfaces and one or more flow control elements and out of the outlet
Implementation Method 2
moving the compressing element to compress the by-product in the container unit
Data Source
AI summary
A compressing element, devices for using such a compressing element and methods of use are provided, in which the compressing element has: a upper surface provided with an inlet and an outlet; a lower surface; an at least partially hollow interior provided between the upper surface and the lower surface, the hollow interior being connected to the inlet and the outlet; the hollow interior being provided with: one or more fluid flow constraining surfaces provided by one or more walls of the follow interior; and one or more fluid flow control elements provided in the hollow interior, the one or more fluid flow control elements being additional to the one or more fluid flow constraining surfaces provided by the one or more walls of the hollow interior. The arrangement of inlet, outlet, fluid flow constraining surfaces and fluid control elements provides for improved cooling of the compressing element, for instance when used to press molten metal processing by-products to extract molten metal.