Microemulsion Collector for Froth Flotation Dispersion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing froth flotation separation methods face challenges in dispersing hydrophobic collectors in aqueous slurries, leading to suboptimal interactions with particles and reduced efficiency due to the contradictory nature of hydrophobic collectors and water-based media.
Innovation Solution
The use of microemulsions comprising collectors, surfactants, and optional cosurfactants to stabilize the collector in a water-based slurry, enhancing its dispersion and adhesion to bubbles, thereby improving the separation process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hydrophobic collectors are added to aqueous slurry, then collector performance is improved, but dispersion and mixing in water-based media deteriorates
Solution Approach 1:
The patent introduces an emulsifier as an intermediary substance that mediates between the hydrophobic collector and the hydrophilic aqueous slurry. The emulsifier has both hydrophobic and hydrophilic portions, allowing it to bridge the two immiscible phases and enable stable dispersion of the collector in water-based media while maintaining its hydrophobic functionality.
Solution Approach 2:
The invention creates a composite system by combining the collector, emulsifier, and optionally frother in specific proportions to form a unified flotation reagent composition. This composite approach allows the hydrophobic collector to function effectively in aqueous media through the synergistic interaction with the emulsifier and frother components.
2Productivity
If collector dosage is increased to improve separation efficiency, then recovery of valuable constituents increases, but interference with frothing agents worsens
Solution Approach 1:
The emulsifier acts as a protective intermediary that shields the collector-frother interaction. By forming an emulsion structure, the emulsifier prevents direct chemical interference between high doses of collector and frothing agents, allowing both to function at optimal levels without mutual degradation.
Solution Approach 2:
The invention changes the physical-chemical parameters of the collector system by converting it from a pure hydrophobic substance to an emulsified form with controlled droplet size and distribution. This parameter change allows the collector to maintain high effectiveness while reducing its chemical interference with frothing agents through physical encapsulation in emulsion droplets.
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 approach increases the effectiveness of collector performance, allowing for higher recovery of valuable constituents and improved selectivity in froth flotation processes, particularly in coal flotation.
Implementation Method 1
The use of microemulsions comprising collectors, surfactants, and optional cosurfactants to stabilize the collector in a water-based slurry
Implementation Method 2
The use of microemulsions comprising collectors, surfactants, and optional cosurfactants to stabilize the collector in a water-based slurry
Implementation Method 3
flotation uses the difference in the hydrophobicity of the respective components. 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 components are introduced into the flotation apparatus sparged with air, to form bubbles
Implementation Method 5
Collectors are additives which adhere to the surface of concentrate particles and enhance their overall hydrophobicity
Data Source
Figure 1
AI summary
The disclosure provides compositions for improving a froth flotation type separation and their use for froth flotation. The composition are in the form of a microemulsion containing water, collector and surfactant(s) to improve the effectiveness of the collector. The improvement allows for low dosages of collector to work as well as much greater amounts of non-microemulsified collector.