Electrochemical Reactor for Selective Sulphide Depression in Flotation
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Solution Overview
Problem
Conventional methods for depressing pyrite and other sulphides in mineral flotation using chemical reagents are costly, environmentally hazardous, and lack specificity, leading to high treatment costs and environmental risks, while also requiring complex logistics and slow response times.
Innovation Solution
An electrochemical reactor and process that applies electric potential to mineral particles to alter their hydrophilicity, reducing the need for chemical depressants and enabling independent control of pH and potential, thereby enhancing the differential flotation of minerals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If chemical depressants are used to depress pyrite and other sulphides, then the depression effect is achieved, but the treatment cost increases and environmental harm occurs
Solution Approach 1:
The patent replaces chemical reagents with an electrochemical system that uses electric potential to achieve depression. The electrochemical reactor applies controlled potential to mineral particles, altering their surface properties and hydrophilicity without introducing harmful chemical substances into the environment.
Solution Approach 2:
The patent changes the controlling parameter from chemical concentration to electrochemical potential. By controlling the electric potential applied to mineral particles, the system achieves selective depression based on electrochemical properties rather than chemical reagent interactions, eliminating the need for harmful chemicals.
2Reliability
If chemical depressants are used to depress pyrite and other sulphides, then the depression effect is achieved, but the treatment cost increases
Solution Approach 1:
The patent replaces chemical reagents with an electrochemical system that uses electric potential to achieve depression. The electrochemical reactor applies controlled potential to mineral particles, altering their surface properties and hydrophilicity without introducing harmful chemicals into the environment.
Solution Approach 2:
The electrochemical system utilizes the natural electrochemical properties of different minerals to achieve selective depression. By applying controlled potential, the system exploits inherent differences in electrochemical behavior among mineral species, eliminating the need for external chemical depressants.
3Ease of operation
If conventional chemical methods are used for depression, then the process is simple, but the response time is slow and control precision is limited
Solution Approach 1:
The patent implements a dynamic control system where electric potential can be rapidly adjusted in real-time based on process conditions. The electrochemical reactor responds immediately to changes in applied potential, enabling fast control response compared to chemical systems that require time for reagent dissolution and diffusion.
Solution Approach 2:
The system incorporates control mechanisms that monitor and adjust the electrochemical potential applied to mineral particles. This feedback control enables precise regulation of the depression process, allowing optimization of separation efficiency and rapid response to changing process conditions.
4Reliability
If chemical depressants are used, then depression is achieved, but the specificity and resolution in differential flotation is reduced
Solution Approach 1:
The patent applies different electrochemical potentials to different mineral species based on their specific electrochemical properties. This localized approach allows each mineral type to be treated according to its unique characteristics, achieving high specificity in depression and excellent resolution in differential flotation separation.
Solution Approach 2:
The patent changes the controlling parameter from chemical concentration to electrochemical potential. By controlling the electric potential applied to mineral particles, the system achieves selective depression based on electrochemical properties rather than chemical reagent interactions, eliminating the need for harmful chemicals.
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
This approach reduces chemical reagent consumption, optimizes grade-recovery relations, allows for faster process control, and improves mineral separation efficiency, enabling the recovery of valuable metals and reducing environmental impact.
Implementation Method 1
The process and reactor represent an electrochemical method for the depression of pyrite and other disposable sulphides
Implementation Method 2
applies electric potential to mineral particles to alter their hydrophilicity
Implementation Method 3
The adhesion of the particles to the bubbles happens mainly as a function of the hydrophobicity of the mineral surface
Implementation Method 4
Flotation is used to concentrate or separate mineral species through the selective adhesion of mineral particles of each species to air bubbles
Data Source
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AI summary
Electrochemical reactor for the depression of iron sulphides and other disposable elements in the concentration of mineral by flotation. The proposed invention represents a reactor based on the action of electrodes over the mineral, which can replace, compliment or minimise the consumption of chemical reagents, as well as improving their effect.