Solid Support Means for Foundry Sand Regeneration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for regenerating foundry sand are energy-intensive and inefficient in separating binding agents, leading to suboptimal sand quality and increased environmental and health hazards due to high water usage and residual binding agents.
Innovation Solution
A method involving a solid support means that binds and separates binding agents from foundry sand using adhesion and cohesion properties, allowing for low-energy regeneration of sand with improved quality, where the support means is added to the foundry sand/binding agent mixture to adhere and remove binding agents, along with quartz dust and electrically charged particles, without prior wet treatment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If thermal regenerating methods are used to separate binding agents from foundry sand, then binding agent removal is achieved, but energy consumption increases significantly due to high temperature requirements
Solution Approach 1:
The patent introduces a solid support means as an intermediary substance that selectively binds to binding agents through adhesion and cohesion forces. This mediator enables separation at ambient or low temperatures by forming binding agent-support complexes that can be easily removed from the sand, avoiding the need for high-temperature thermal processing while achieving effective binding agent removal
Solution Approach 2:
The invention replaces thermal energy-based separation mechanisms with mechanical/chemical interaction mechanisms. Instead of using heat to volatilize or decompose binding agents, the method uses solid support means that mechanically bind to binding agents through adhesion and cohesion, enabling separation through physical means rather than thermal energy input
2Manufacturing precision
If wet regenerating methods are used to rinse out binding agents, then separation efficiency improves, but water consumption increases and environmental hazards arise
Solution Approach 1:
The solid support means acts as an intermediary that provides selective binding capacity for binding agents without requiring large quantities of water. The support means chemically or physically interacts with binding agents through adhesion and cohesion, creating separable complexes that can be removed dry, thereby eliminating the need for water-intensive rinsing processes while maintaining effective separation
Solution Approach 2:
The invention changes the separation mechanism from water-based dissolution and rinsing to solid-phase adsorption and adhesion. By altering the physical-chemical parameters of the separation process from liquid-phase to solid-phase interactions, the method achieves binding agent removal without the need for large volumes of water, reducing both consumption and environmental impact
3Ease of operation
If drying processes are applied to regenerated sand, then pourability is improved, but energy input increases due to water evaporation requirements
Solution Approach 1:
The solid support means serves as a mediator that binds binding agents and associated moisture, effectively reducing the free water content in the sand mixture. By capturing moisture within the support means structure through adhesion and cohesion, the method reduces the energy required for subsequent drying operations while still achieving the necessary pourability of the regenerated sand
4Use of energy by moving object
If mechanical regenerating methods are used to separate binding agents, then energy consumption is reduced, but separation completeness is insufficient for industrial scale
Solution Approach 1:
The solid support means acts as a highly effective intermediary that enhances mechanical separation capability. The support means provides numerous binding sites through adhesion and cohesion that selectively capture binding agents, transforming weak mechanical separation into an efficient process that achieves industrial-scale completeness while maintaining low energy consumption characteristics of mechanical methods
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 method effectively reduces conductivity and acid consumption by at least 30% in the regenerated sand, improving its quality and enabling reuse while minimizing energy input and environmental impact.
Implementation Method 1
using a preferably absorbent and/or adsorbent, solid (i.e. not having a liquid aggregate state, but being formed by a solid body or solid substance, respectively), support means, wherein binding agent and support means are separated from the foundry sand
Implementation Method 2
using a preferably absorbent and/or adsorbent, solid (i.e. not having a liquid aggregate state, but being formed by a solid body or solid substance, respectively), support means, wherein binding agent and support means are separated from the foundry sand
Implementation Method 3
A method involving a solid support means that binds and separates binding agents from foundry sand using adhesion and cohesion properties
Data Source
AI summary
A method for regenerating foundry sand, in particular for the renewed production of foundry molds and/or foundry mold cores from the regenerated foundry sand, through removal of binding agent, from a foundry sand/binding agent mixture, using a solid support means (6), wherein binding agent and support means (6) are separated from the foundry sand, wherein support means (6) is brought into contact with the foundry sand/binding agent mixture, is preferably added to it, and, together with the binding agent, which adheres thereto and/or which is incorporated therein, is separated from the foundry sand (10).