Frother Microemulsion for Mineral Flotation Efficiency
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Solution Overview
Problem
Froth flotation separation processes face inefficiencies due to the limited solubility of commonly used frothers in water, which hampers their interaction with bubbles and reduces the effectiveness of the separation process.
Innovation Solution
The development of a method involving the creation of a stable microemulsion with a frothing agent, surfactant, and optional cosurfactant, which is blended with the slurry medium to enhance froth separation efficiency, allowing for the use of a smaller amount of frother to achieve better results.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If commonly used frothers are used in traditional form, then the process is simple, but their limited solubility in water reduces their interaction with bubbles and effectiveness
Solution Approach 1:
The patent transforms the physical-chemical parameters of the frother by converting it from a traditional water-soluble form to a microemulsion form. This involves changing the solubility characteristics and interfacial properties of the frother through formulation with surfactants and cosurfactants, enabling better bubble interaction and flotation effectiveness while maintaining process feasibility
Solution Approach 2:
The patent creates a composite frother system by combining the frothing agent with surfactants and cosurfactants to form a microemulsion. This composite formulation integrates multiple functional components that work synergistically: the frother provides bubble stability, while surfactants enhance surface activity and emulsification, creating a more effective flotation reagent system
2Reliability
If more frother is added to compensate for limited solubility, then bubble interaction improves, but the amount of chemical additive increases
Solution Approach 1:
By changing the physical-chemical parameters of the frother through microemulsion formulation, the patent dramatically improves water solubility and dispersion characteristics. This allows the frother to be effectively distributed at much lower concentrations, reducing chemical dosage while maintaining or enhancing bubble interaction effectiveness
Solution Approach 2:
The patent introduces surfactants and cosurfactants as intermediary substances that facilitate the interaction between the hydrophobic frother and the aqueous slurry medium. These intermediaries form microemulsion structures that solubilize the frother, enabling it to interact with bubbles at lower concentrations while maintaining effectiveness
3Productivity
If traditional frothing agents are used, then the process is straightforward, but fewer and larger bubbles are formed reducing separation efficiency
Solution Approach 1:
The patent changes the interfacial tension parameters and surfactant properties of the frother system through microemulsion formulation. This results in the formation of numerous small bubbles instead of fewer large bubbles, significantly increasing the total bubble surface area available for hydrophobic particle attachment and thereby improving separation efficiency
Solution Approach 2:
The patent creates local quality variations in the bubble population by generating a distribution of small bubbles with uniform size characteristics. This localized optimization of bubble size and distribution enhances the interfacial area for particle-bubble interaction throughout the slurry, improving overall flotation productivity
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 microemulsion formulation increases the surface area of the frother, forming more and smaller bubbles that selectively bind to the concentrate, improving the recovery of the beneficiary material and reducing the proportion of gangue in the concentrate, particularly effective in coal flotation.
Implementation Method 1
making stable microemulsion with a frothing agent, a surfactant (optionally also with a cosurfactant) and water
Implementation Method 2
The microemulsion formulation increases the surface area of the frother, forming more and smaller bubbles
Implementation Method 3
The components are introduced into the flotation apparatus sparged with air, to form bubbles. The hydrophobic particles preferentially attach to the bubbles
Implementation Method 4
The hydrophobic particles preferentially attach to the bubbles, buoying them to the top of the apparatus
Implementation Method 5
The components are introduced into the flotation apparatus sparged with air, to form bubbles
Data Source
AI summary
The invention provides methods and compositions for improving a froth flotation type separation. The method uses a microemulsion to improve the effectiveness of a frother. The improvement allows for low dosages of frother to work as well as much greater amounts of non-microemulsified frother.