Portable Mill Agitation for Remote Mining Size Reduction
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Solution Overview
Problem
Existing mining systems face challenges in efficiently processing raw materials in remote locations where constructing large-scale mills is unfeasible or prohibitively expensive, requiring a portable solution for size reduction of raw mining materials.
Innovation Solution
A portable mill apparatus with a housing and impeller system that reduces raw material size through agitation with air flow, featuring a shaft with blades and multiple inlets for raw material and air, allowing for size reduction and recirculation of oversized materials, enabling efficient communition and liberation of valuable minerals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a large-scale mill is constructed to process raw materials, then processing capacity and efficiency are improved, but construction cost and feasibility in remote locations deteriorate
Solution Approach 1:
The mill system is divided into modular components including a housing, impeller assembly, motor, and support structures that can be manufactured separately and assembled at the remote mining location. This segmentation enables transport of individual modules via standard equipment while maintaining overall processing capacity.
Solution Approach 2:
The patent transitions from a fixed, large-scale mill design to a portable, transportable configuration by reducing the spatial footprint and enabling disassembly into movable components. This dimensional change allows deployment in remote locations without requiring extensive infrastructure construction.
2Area of stationary object
If raw materials are reduced to finer size ranges, then surface area and mineral liberation are improved, but energy consumption and processing time increase
Solution Approach 1:
The impeller generates intense mechanical vibration and turbulence within the housing to accelerate particle size reduction. This vibrational mechanism achieves fine grinding more efficiently than conventional mechanical crushing, reducing energy consumption while maintaining high surface area output.
Solution Approach 2:
The system utilizes air flow and fluid dynamics created by the rotating impeller to suspend and circulate particles throughout the housing. This pneumatic assistance reduces the mechanical energy required for size reduction by leveraging fluid forces to enhance particle collision and breakdown.
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 portable mill effectively reduces raw material size, increases surface area, and facilitates the liberation of valuable minerals, enhancing processing efficiency and throughput, while being compact and transportable for use in remote mining sites.
Implementation Method 1
agitating the raw mining material via an impeller, where agitating reduces at least some of the raw mining material to a second size range
Data Source
AI summary
A mill includes a housing with a first end portion, a second end portion, and a lateral area disposed therebetween. The housing includes a raw material inlet, an air inlet, a recirculated material inlet, and a material outlet. An impeller is supported by the housing and includes a shaft disposed along the longitudinal axis of the housing, with a plurality of curved blades. A method for milling includes receiving a material of a first size range, introducing the material to an apparatus via a first inlet and introducing air into the apparatus via a second inlet. The method also includes agitating the material via an impeller, where the agitation reduces at least some of the material to a second size range by the time the material reaches an outlet of the apparatus. The processed material is delivered to subsequent processing operations.