Cavern Rubblization Pressure Cycling for Deeper Potash Recovery
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Solution Overview
Problem
Existing solution mining methods for potash recovery are inefficient and lack an effective method for cavern rubblization, particularly in deeper deposits, leading to reduced recovery rates and potential cave-ins due to clay seam instability.
Innovation Solution
Implementing pressure cycling and fluid pulsing techniques to enhance cavern rubblization by destabilizing clay seams, increasing the surface area of potash-bearing ore for better extraction, which can be combined with traditional rubblization methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional rubblization methods are used to destabilize clay seams, then potash recovery is achieved, but the method is inefficient and lacks effectiveness in deeper deposits
Solution Approach 1:
The patent applies periodic action by implementing pressure cycling through repeated cycles of pressurization and depressurization. This periodic pressure application effectively destabilizes clay seams in deeper deposits, achieving reliable rubblization and significantly improving potash recovery rates compared to traditional single-stage methods.
Solution Approach 2:
The patent utilizes parameter changes by varying pressure parameters during the rubblization process. Through controlled changes in pressure magnitude and duration, the method effectively targets clay seams at different depths, enhancing the reliability and efficiency of potash recovery operations.
2Productivity
If pressure cycling is implemented to enhance cavern rubblization, then potash recovery is improved by up to 20%, but the process complexity increases
Solution Approach 1:
The patent applies self-service by utilizing the cavern's own fluid dynamics and pressure systems to achieve rubblization. The pressure cycling process leverages the existing well infrastructure and fluid flow patterns, minimizing the need for external complex equipment while still achieving enhanced potash recovery.
Solution Approach 2:
The patent employs pneumatic and hydraulic principles by using fluid pressure cycling to destabilize clay seams. The system utilizes liquid or gas phase fluids to apply cyclic pressures, achieving effective rubblization through well-established fluid mechanics rather than complex mechanical systems.
3Productivity
If fluid pulsing is used to wet clay seams, then the wetting efficiency is enhanced, but the operational complexity increases
Solution Approach 1:
The patent merges the wetting function with the pressure cycling operation. By combining fluid pulsing for wetting clay seams with the existing pressure cycling rubblization process, the system achieves enhanced wetting efficiency without requiring separate operational sequences, thereby maintaining operational simplicity.
Solution Approach 2:
The patent applies multi-functionality by designing the pressure cycling system to simultaneously achieve multiple objectives: destabilizing clay seams for rubblization, wetting the seams through fluid pulsing, and facilitating potash dissolution. This universal approach enhances operational ease by consolidating multiple functions into a single integrated process.
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
Enhances potash recovery by up to 20% through improved cavern rubblization, extending the life of mining operations and reducing engineering risks.
Implementation Method 1
pressure is applied to the entire cavity by using an available liquid stream to cause it to expand. This step is followed by rapidly releasing the cavity's pressure, causing it to quickly shrink to its original size. This cycled event provides large stresses to the ore body and clay seam, and is repeated until it ultimately causes the fracturing of ore
Implementation Method 2
The clay absorbs the water naturally and the water continues to migrate though the clay, outwardly from the injection site which reduces the clay's strength
Implementation Method 3
a salt saturated brine solution is usually used to dissolve and extract potash from existing pillars and surrounding walls of mines and caverns
Data Source
AI summary
Methods for cavern rubblization for enhanced potash recovery are disclosed. In embodiments, such a method includes pressure cycling. The method can include pressurizing a cavity to maximum flow capacity followed by rapid relief of the cavity pressure. In this embodiment, this cycle of pressurization and rapid relief is repeated several times. Other embodiments of cavern rubblization and methods for enhanced potash recovery, a technique of fluid pulsing is used. According to embodiments, a tool can be used to pulse pressure through clay seams to be wetted. According to both embodiments, these methods increase potash recovery during mining.