Composite Collector Composition for Low-Temperature Ore Flotation
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Solution Overview
Problem
Existing collectors for lithium and rare earth ores are inefficient in separating desired minerals from unwanted impurities, particularly at low temperatures, leading to high viscosity and operational challenges in froth flotation processes.
Innovation Solution
A collector composition comprising fatty acids, hydroxamic acids, sulfonate compounds, and optional amines, designed to maintain low viscosity and enhance separation efficiency, even at low temperatures, by optimizing the weight ratios and concentrations of these components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional collectors are used in froth flotation for lithium ore beneficiation, then the separation process can be performed, but the viscosity becomes high at low temperatures leading to poor processability and operational efficiency
Solution Approach 1:
The patent changes the chemical composition parameters of the collector by incorporating specific ratios of hydroxamic acid (0.1-10 wt%), fatty acid (0.1-50 wt%), and sulfonate compound (0.1-75 wt%). This parameter optimization ensures the collector maintains low viscosity and good processability at low temperatures while preserving effective separation performance in froth flotation operations.
Solution Approach 2:
The patent creates a composite collector composition by combining multiple chemical components (hydroxamic acid, fatty acid, and sulfonate compound) in specific proportions. This composite approach allows the collector to exhibit improved rheological properties at low temperatures while maintaining its flotation effectiveness, resolving the contradiction between separation efficiency and low-temperature processability.
2Productivity
If existing collectors are used to separate lithium minerals from impurities, then flotation can occur, but the selectivity and recovery of lithium oxide concentrate are insufficient
Solution Approach 1:
The patent optimizes the concentration parameters of individual components: hydroxamic acid at 0.1-10 wt%, fatty acid at 0.1-50 wt%, and sulfonate compound at 0.1-75 wt%. These parameter adjustments enhance the collector's ability to selectively adsorb on lithium mineral surfaces while repelling impurities, thereby improving both recovery and selectivity of lithium oxide concentrate.
Solution Approach 2:
The composite collector composition combines the chelating properties of hydroxamic acid with the hydrophobic characteristics of fatty acid and the surface activity of sulfonate compounds. This synergistic composite material achieves superior selectivity and recovery by simultaneously enhancing mineral surface attachment and bubble flotation efficiency.
3Ease of operation
If the collector composition is optimized for low viscosity, then processability improves, but the separation efficiency may be compromised
Solution Approach 1:
The patent carefully balances the viscosity-reducing effect of the collector composition by controlling the concentration ranges of each component. The specific parameter ranges (hydroxamic acid: 0.1-10 wt%, fatty acid: 0.1-50 wt%, sulfonate compound: 0.1-75 wt%) ensure the mixture achieves acceptable viscosity for easy operation while maintaining sufficient hydrophobicity and surface activity for effective mineral separation.
Solution Approach 2:
The composite collector leverages the complementary properties of its components: hydroxamic acid provides chelating capability, fatty acid contributes hydrophobicity, and sulfonate compound adds surface activity. This composite structure enables the collector to maintain low viscosity for good processability while preserving the necessary separation efficiency through synergistic interactions among components.
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 composition achieves higher lithium oxide concentrate recovery with improved selectivity and processability, reducing energy consumption and enhancing operational efficiency in froth flotation.
Implementation Method 1
the valuable minerals (or unwanted gangue materials in reverse flotation) are hydrophobized with the flotation collectors and then attached to the surface of the bubbles to be floated out from the unwanted gangue materials (or valuable minerals in reverse flotation)
Implementation Method 2
frothers are commonly used in froth flotation and have desirable bubble properties, e.g., bubble stability
Data Source
Figure 1
AI summary
Disclosed herein are collector compositions comprising fatty acids and/or fatty acid derivatives, sulfonate compounds and hydroxamic acids or hydroxamates, which can be used for the beneficiation of industrial minerals.