Ether Amine Mining Collectors for Selective Mineral Separation
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Solution Overview
Problem
Existing mineral ore concentration processes, such as those in the Mesabi range, face inefficiencies in separating desired minerals from low-concentration ores due to the inability to effectively distinguish and separate them from competing minerals.
Innovation Solution
The use of ether amines with sufficient water solubility to form strong water-insoluble complexes specifically with desired minerals, while avoiding non-target minerals, enhances the concentration yield by forming selective mineral-collector complexes that can be floated and separated.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional collectors are used in low-concentration ores, then the concentration process can proceed, but the yield and selectivity of desired minerals are insufficient due to inability to distinguish from competing minerals
Solution Approach 1:
The ether amine collector is designed with specific molecular structure characteristics (ether groups and amine groups in particular ratios) that create localized chemical properties enabling selective interaction with desired mineral surfaces while ignoring competing minerals like silicates
Solution Approach 2:
The invention optimizes specific parameters of the collector molecule including the ratio of ether to amine groups, chain length, and molecular weight to achieve optimal balance between water solubility and mineral complex strength, thereby improving both yield and selectivity
2Productivity
If collectors form strong complexes with desired minerals, then concentration yield improves, but non-target minerals like silicates may also be collected if not sufficiently selective
Solution Approach 1:
The ether amine acts as a selective intermediary that preferentially mediates between air bubbles and desired minerals while excluding non-target minerals through its specific molecular structure, achieving both strong complex formation and high selectivity
Solution Approach 2:
The collector molecule combines ether groups and amine groups in a composite structure that provides both water solubility (from ether groups) and strong mineral complexing capability (from amine groups), creating a material with multiple functional properties that enable selective flotation
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 significantly increases the yield of desired minerals by optimizing the solubility, frothing potential, and density of the mineral-collector complexes, reducing the collection of non-target minerals like silicates and improving the overall concentration process.
Implementation Method 1
amines with sufficient water solubility, that form strong water insoluble complexes with the desired mineral
Implementation Method 2
The family of amine, xanthate and dithiocarbamate collectors of the present invention does just that
Data Source
AI summary
A family of mining collectors and surfactants that uses alkoxylates allows for the easy adjustment of solubility and molecular weight useful because anionic and cationic mineral collectors require such varying degrees of solubility and molecular weight. The family of the present invention allows for the optimization of both parameters and an increase in collector efficiency.