Multiphase-Flow Ore Separation for Precise Mud-Sand Grading
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Solution Overview
Problem
Existing ore separation apparatuses for argillaceous sandstone uranium ore face challenges in efficient mud-sand stripping, particle grading precision, uniform-mixing and activating, and high mud content, leading to increased costs and complex processes.
Innovation Solution
A multiphase-flow graded-separation system comprising a hydraulic tossing device, high-frequency linear vibration grading, energy-gathering ultrasonic scrubbing, and pneumatic-energy uniform-mixing, followed by micro-electrolysis activation and dewatering, to achieve intensive mud-sand separation and efficient uranium extraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional grinding and flotation pretreatment is applied to argillaceous sandstone uranium ore, then particle classification is achieved, but grinding costs increase and subsequent particle analysis and separation workload increases
Solution Approach 1:
The patent divides the separation process into distinct stages: hydraulic tossing for initial mud-sand separation, high-frequency linear vibration for fine particle grading, and multiphase-flow swirling for concentration. This segmentation allows each stage to perform a specific function efficiently, avoiding the need for complex multi-step grinding and flotation while achieving precise particle classification.
Solution Approach 2:
The patent replaces conventional mechanical grinding with hydraulic tossing and high-frequency linear vibration. The hydraulic tossing device uses water flow and mechanical impact to separate mud from sand, while the high-frequency linear vibration device uses vibrational forces to grade particles by size. This substitution eliminates the need for energy-intensive grinding equipment and reduces overall process complexity.
2Manufacturing precision
If conventional mud-sand separation is used, then basic separation is achieved, but mud content in sand material remains high and dewatering cost is high
Solution Approach 1:
The patent employs high-frequency linear vibration technology to separate mud from sand particles. The high-frequency vibration creates inertial forces that cause mud particles to separate from sand particles based on their different densities and sizes. This vibration-based separation achieves superior mud-sand separation precision while producing sand material with low mud content, eliminating the need for expensive dewatering processes.
Solution Approach 2:
The patent uses hydraulic tossing with water flow to initiate particle separation and multiphase-flow swirling to enhance separation efficiency. The hydraulic system carries separated particles through the process and enables continuous operation. The multiphase-flow swirling device creates vortex flows that separate mud and sand particles based on their different densities, achieving high separation precision without requiring additional dewatering steps.
3Device complexity
If simple separation apparatuses are used, then device complexity is low, but particle grading precision and mud-sand stripping efficiency are insufficient
Solution Approach 1:
The patent employs dynamic separation mechanisms including high-frequency linear vibration and multiphase-flow swirling. The high-frequency linear vibration device dynamically adjusts vibration frequency to optimize particle grading, while the multiphase-flow swirling device dynamically controls flow rates and vortex intensity. These dynamic operations enable simple apparatus structures to achieve high particle grading precision by adapting to different ore characteristics in real-time.
Solution Approach 2:
The patent optimizes separation efficiency by changing operational parameters such as vibration frequency, water flow rate, and vortex intensity. The high-frequency linear vibration device operates at frequencies optimized for particle size separation, while the multiphase-flow swirling device adjusts flow parameters to maximize mud-sand stripping. These parameter optimizations allow simple apparatus designs to achieve sophisticated separation performance.
4Productivity
If high-frequency linear vibration grading is applied, then particle grading efficiency is improved, but energy consumption increases
Solution Approach 1:
The patent uses high-frequency linear vibration with periodic oscillation to achieve efficient particle grading. The periodic vibration creates repeated inertial forces that separate particles by size and density. By optimizing the vibration frequency to match natural particle resonance, the system achieves high grading efficiency while minimizing energy consumption. The periodic action allows particles to be progressively separated through repeated cycles of vibration and settling.
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 reduces mud content to less than 3%, enhances grading efficiency, and improves uranium leaching rates, reducing costs and residue, while forming high-quality sand for heap leaching and increasing uranium resource utilization.
Implementation Method 1
a hydraulic tossing washing and scattering pretreatment device
Implementation Method 2
a high-frequency linear vibration grading device
Implementation Method 3
high-frequency linear vibration grading
Implementation Method 4
an energy-gathering ultrasonic scrubbing device
Implementation Method 5
a first-stage multiphase-flow swirling grading device
Implementation Method 6
micro-electrolysis activation
Data Source
AI summary
An efficient multiphase-flow graded-separation, concentration, and purification system for argillaceous sandstone uranium ore includes a hydraulic tossing washing and scattering pretreatment device, a high-frequency linear vibration grading device, a first-stage multiphase-flow swirling grading device, an energy-gathering ultrasonic scrubbing device, a second-stage multiphase-flow swirling grading device, a high-frequency linear vibration dewatering device, an efficient uniform-mixing and activating system and a conditioning and pressing dewatering system. The present disclosure implements intensive mud-sand stripping of crushed argillaceous sandstone uranium ore, fine graded-separation of material, and efficient uniform-mixing and activating and deep efficient dewatering of fine-particle argillaceous material. Finally, four types of core material of coarse sand material, fine sand material, dry tailings residue and a high-concentration uranium ore leaching solution are formed through continuous work. Efficient multiphase-flow graded-separation, concentration and purification of the argillaceous sandstone uranium ore are implemented, and an intensive extraction rate of uranium ore resources is improved.