Earth Material Thermal Activation for Higher Metal Ion Extraction
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Solution Overview
Problem
Existing methods for recovering lithium and other metal ions from earth materials yield low-concentration aqueous solutions, necessitating an efficient and effective process for extraction.
Innovation Solution
Thermal treatment of earth materials using plasma and microwave processes to rearrange aluminum, silicon, and oxygen structures, followed by leaching to form dilute metal solutions, which are then recovered using selective recovery processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If thermal treatment is applied to earth materials, then metal ion mobility and extractability are enhanced, but energy consumption increases
Solution Approach 1:
The patent applies plasma treatment and microwave irradiation to fundamentally change the physical and chemical parameters of earth materials. Plasma treatment modifies surface properties and creates reactive sites, while microwave irradiation generates internal heating and structural changes that enhance metal ion release. These parameter changes enable more efficient extraction of lithium and other metal ions from refractory materials, directly addressing the productivity improvement while providing controlled energy input mechanisms.
Solution Approach 2:
The patent replaces conventional mechanical and chemical extraction methods with plasma and microwave-based approaches. Instead of using strong acids, bases, or extensive mechanical processing, the invention uses plasma chemistry and electromagnetic field interactions to achieve metal ion liberation. This substitution reduces the need for multiple processing stages and chemical reagents, improving overall extraction efficiency while providing more targeted energy utilization.
2Quantity of substance
If leaching is used to recover metal ions, then metal extraction is achieved, but the resulting solution has low metal concentration
Solution Approach 1:
The patent applies plasma treatment and microwave irradiation as preliminary actions before leaching. Plasma treatment pre-conditions the earth material by creating surface defects, removing passivation layers, and generating reactive species that facilitate subsequent metal ion release. Microwave irradiation pre-heats and structurally modifies the material to enhance leaching efficiency. These preliminary actions concentrate the metal ions more effectively during the leaching stage, producing higher concentration solutions and improving overall recovery precision.
Solution Approach 2:
The patent introduces plasma and microwave fields as intermediary processes between the earth material and the leaching solution. Plasma acts as an intermediary by modifying material surface properties and generating precursor species that enhance metal ion availability. Microwave irradiation serves as an intermediary energy transfer mechanism that selectively heats and activates specific mineral phases. These intermediaries bridge the gap between raw material and leaching solution, enabling more efficient metal ion transfer and higher concentration extraction.
3Productivity
If conventional extraction methods are applied, then process simplicity is maintained, but recovery efficiency is low
Solution Approach 1:
The patent merges plasma treatment, microwave irradiation, and leaching processes into an integrated extraction system. The plasma and microwave预处理 steps are combined with the leaching operation to create a multi-stage process that enhances overall recovery efficiency. This merging allows the benefits of advanced plasma-microwave technology to be applied while maintaining operational simplicity through process integration and unified equipment design.
Solution Approach 2:
The patent develops a universal extraction approach that can handle various earth materials containing different metal ions (lithium, cobalt, nickel, etc.). The plasma-microwave-leaching system is designed to be material-agnostic and can process diverse ores and tailings materials. This multi-functionality enables high recovery efficiency across different material types while maintaining a consistent process framework, reducing the need for material-specific process optimization and equipment variations.
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
Enhances the mobility and extractability of metal ions, allowing for higher yields and more efficient recovery of metals such as lithium from earth materials.
Implementation Method 1
thermal treatment of earth materials using plasma and microwave processes
Implementation Method 2
thermal treatment of earth materials using plasma and microwave processes
Implementation Method 3
removing the metal from the thermally treated earth material to form a dilute metal solution
Data Source
AI summary
Described herein are methods of recovering metal ions from thermally treated earth materials and/or making polymers from the thermally treated earth materials. A thermally treated earth material is obtained, for example by treating an earth material using plasma, microwaves, flash calcination, or any combination thereof. A metal is removed from the thermally treated earth material, for example by mixing with an organic solvent or aqueous solution having pH less than about 9. The remaining earth material is alkali reactive and can be formed into an aluminosilicate polymer by exposure to a high pH aqueous solution.