Modified Amine-Aldehyde Resins for Selective Contaminant Binding
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Solution Overview
Problem
Current methods for separating solids and ionic species from aqueous media in processes like froth flotation and dewatering are inefficient, often requiring multiple stages and resulting in inadequate refinement, especially when dealing with diverse materials and contaminants.
Innovation Solution
Modified resins, formed by reacting a primary or secondary amine with an aldehyde and further modified with a coupling agent, are used to selectively bind to solid contaminants and ionic species, improving separation efficiency by enhancing the selectivity of froth flotation and other separation processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional separation methods are used in froth flotation, then the process can handle diverse materials, but the separation efficiency is inadequate and multiple stages are required
Solution Approach 1:
The patent modifies the chemical parameters of the resin by reacting it with chloroform to introduce chloroform-reacted functional groups. This parameter change enhances the resin's ability to selectively bind to specific minerals, thereby improving both separation efficiency and refinement purity in a single stage process
Solution Approach 2:
The invention creates a composite material by combining base resin with chloroform-reacted components. This composite structure provides both the general adsorption capability of the resin and the enhanced selectivity from the chloroform modification, resolving the contradiction between handling diverse materials and achieving high separation efficiency
2Manufacturing precision
If multiple separation stages are implemented, then refinement purity can be improved, but process complexity and time consumption increase
Solution Approach 1:
The resin is pre-modified with chloroform before use in the separation process. This preliminary chemical modification equips the resin with enhanced selective binding capabilities, allowing it to achieve high refinement purity in a single separation stage without requiring multiple sequential stages
Solution Approach 2:
The chloroform-reacted resin possesses multiple functions: it can handle diverse mineral types while simultaneously achieving high separation efficiency and refinement purity in one stage. This multi-functionality eliminates the need for multiple specialized separation stages
3Manufacturing precision
If selective binding agents are added to enhance separation, then refinement purity improves, but the cost and chemical complexity of the process increase
Solution Approach 1:
Instead of adding multiple different chemical agents, the patent modifies the parameter of a single resin material through chloroform reaction. This approach achieves enhanced selectivity and refinement purity while maintaining process simplicity, as only one modified resin product needs to be manufactured and applied
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 modified resins effectively separate a wide range of solids and ionic species, improving the purity of materials such as kaolin clay, bitumen, and coal, while reducing impurities and increasing the BTU value of coal, thereby enhancing the economic viability of separation processes.
Implementation Method 1
The modified resins comprise a base resin that is the reaction product of a primary or secondary amine and an aldehyde... The base resin is modified with a coupling agent... selectively bind to solid contaminants and ionic species
Data Source
AI summary
Modified resins are disclosed for removing a wide variety of solids and/or ionic species from the liquids in which they are suspended and/or dissolved. These modified resins are especially useful as froth flotation depressants in the beneficiation of many types of materials (e.g., mineral and metal ores), including the beneficiation of impure coal comprising clay impurities, as well as in the separation of valuable bitumen from solid contaminants such as sand. The modified resins are also useful for treating aqueous liquid suspensions to facilitate the removal of solid particulates, as well as the removal of metallic ions in the purification of water. The modified resins comprise a base resin that is modified with a coupling agent, which is highly selective for binding to solid contaminants and especially siliceous materials such as sand or clay.