Flotation Sparger Unit Low-Pressure Gas Dispersion
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Solution Overview
Problem
Conventional flotation separation systems in the minerals industry require significant energy for gas injection, pressurization, and maintaining slurry suspension, leading to high operational costs and energy consumption.
Innovation Solution
A flotation separation system with a sparger unit that introduces gas into the slurry at low pressure, using a sparging mechanism with a high shear element to create a bubble dispersion that allows hydrophobic species to adhere to bubbles, reducing the need for high energy input and enabling efficient separation without additional equipment for froth formation or slurry suspension.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional flotation separation systems use high energy input for gas injection and pressurization, then bubble formation and species separation can be achieved, but energy consumption and operational costs increase significantly
Solution Approach 1:
The sparging mechanism introduces gas into the slurry at low pressure before the slurry enters the separation tank, pre-forming bubbles in advance. This preliminary bubble formation eliminates the need for high energy gas injection and pressurization equipment in the separation tank, while still achieving effective species separation through the subsequent froth formation process
Solution Approach 2:
The system changes the pressure parameter at which gas is introduced into the slurry, using low pressure in the sparging mechanism instead of high pressure. This parameter change reduces energy consumption while maintaining separation efficiency through the designed flow path and froth formation process
2Reliability
If conventional systems use additional equipment for maintaining slurry suspension and froth formation, then separation process can be controlled, but device complexity and equipment requirements increase
Solution Approach 1:
The sparger unit combines multiple functions into a single integrated component: gas introduction, bubble formation, and slurry flow control are all achieved through the sparging mechanism and separation tank design. This merging eliminates the need for separate suspension maintenance equipment and complex control systems while maintaining reliable process operation
Solution Approach 2:
The separation tank design allows the slurry-bubble mixture to automatically form froth at the top through gravity and flow dynamics without additional mechanical agitation or control equipment. The system uses the natural properties of the slurry and bubble dispersion to achieve separation, reducing device complexity while maintaining process reliability
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 system achieves efficient separation of hydrophobic species with reduced energy consumption, smaller equipment requirements, and lower operational costs, while maintaining high recovery rates and flexibility in design and operation.
Implementation Method 1
The sparging mechanism is for dispersing the gas bubbles within the slurry
Implementation Method 2
A high shear element is located within the sparging mechanism... This high shear element is for sparging the gas bubbles so as to form a bubble dispersion
Implementation Method 3
The hydrophobic species adhere to the bubbles within the sparger unit... causes adhesion of the hydrophobic species to the gas bubbles
Implementation Method 4
The separation tank is constructed to allow the bubble dispersion to form a froth at the top of the slurry contained in the separation tank
Implementation Method 5
The gas itself has enough pressure to form gas bubbles in the slurry
Data Source
AI summary
What is claimed is a flotation separation system for partitioning a slurry. The slurry includes a hydrophobic species that can adhere to gas bubbles that form within the slurry. The flotation separation system includes a flotation separation cell. The flotation separation cell has a sparger unit and a separation tank. The separation tank is constructed to allow the bubble dispersion to form a froth at the top of the slurry contained in the separation tank. The sparger unit includes a slurry inlet, a slurry outlet, a sparging mechanism, a high shear element, and a gas inlet.