Flotation Collector Composition for Spodumene Grade and Recovery
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Solution Overview
Problem
Existing flotation processes for recovering flotable minerals like lithium and rare earth metals face challenges with chemical compositions that have low specificity, leading to sub-optimal grades and recoveries, and are not environmentally friendly, especially when dealing with complex and low-quality feeds.
Innovation Solution
A flotation process using a combination of fatty acids (oleic, linoleic, and palmitic acids) and ether carboxylic acid surfactants, along with fatty acid alkyl esters, to enhance the hydrophobicity of mineral particles, allowing for efficient separation and recovery of minerals like spodumene, even at low dosing rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If existing flotation chemical compositions are used, then flotation process can be carried out, but specificity is low leading to sub-optimal grades and recoveries
Solution Approach 1:
The patent changes the chemical parameters of the flotation collector by specifying precise compositional ranges: 60-80 wt% fatty acid component, 10-30 wt% anionic surfactant component, and 5-20 wt% nonionic surfactant component. This parameter optimization resolves the contradiction by achieving both high specificity (through selective mineral attachment) and improved grade/recovery (through enhanced flotation efficiency)
Solution Approach 2:
The invention uses a composite chemical composition combining three distinct component types (fatty acids, anionic surfactants, and nonionic surfactants) in specific proportions. This composite approach synergistically improves both specificity and recovery/grade by leveraging the complementary properties of each component class rather than relying on a single chemical type
2Productivity
If high dosing rates are used to improve recovery, then more mineral can be recovered, but environmental impact increases and cost increases
Solution Approach 1:
By optimizing the chemical composition parameters (specific ratios of fatty acids, anionic surfactants, and nonionic surfactants), the patent enhances the collector's effectiveness per unit dose. This allows achieving high recovery rates at lower dosing rates, thereby reducing environmental impact and operational costs while maintaining productivity
3Adaptability or versatility
If existing chemical compositions are used, then flotation can proceed, but performance is limited in groundwater and complex feeds
Solution Approach 1:
The patent creates a universal flotation collector composition that functions effectively across diverse water conditions (freshwater, groundwater, hard water) and feed types (complex and low-quality ores). The multi-component surfactant system provides adaptability to varying water chemistry while maintaining high grade and recovery through consistent mineral-selective attachment properties
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 process achieves good recovery and grade of spodumene, with improved performance in various water conditions, including hard water, and reduces environmental impact by using sustainable and specific chemical compositions.
Implementation Method 1
contacting particles with water in the presence of air bubbles and suitable chemicals, resulting in binding of chemicals to the surface of mineral particles rendering them hydrophobic
Implementation Method 2
such that they are carried to the upper surface by the air bubbles, and froth enriched in the mineral particles can be separated from unwanted minerals
Data Source
AI summary
Provided herein are processes for treating a metal ore containing a flotable mineral involving subjecting an ore to flotation and separating a fraction enriched in the flotable mineral from a fraction containing waste ore components. Also provided herein are flotation collector compositions useful in the above processes, and additive compositions and kits for producing the flotation collector compositions.