Mobile Material Conveyor for Continuous Ore-Waste Classification
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Solution Overview
Problem
Existing mineral handling processes in open-cast mining are inefficient, particularly in truck-shovel loading, leading to suboptimal fill efficiencies and excessive waste transportation due to rigid classification of materials, which is wasteful and not adaptable to economic fluctuations.
Innovation Solution
A mobile material conveyor apparatus with a scanning system that classifies material into usable ore and waste classes based on target mineral levels, allowing flexible classification and continuous supply to a truck loading system, incorporating a conveyor device, scanning device, and classification module mounted on a chassis for mobility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If truck-shovel loading is used, then flexibility in removal of overburden material or mineral is improved, but fill efficiency and volume processing rates deteriorate
Solution Approach 1:
A mobile processing rig with a conveyor system acts as an intermediary between the shovel and the truck. The conveyor continuously transports material from the shovel to the truck, eliminating the need for the truck to reverse into position for each load. This intermediary system converts the batch shovel loading process into a continuous flow, improving both flexibility and fill efficiency simultaneously.
Solution Approach 2:
The mobile processing rig maintains continuous operation by keeping the conveyor and processing equipment in constant motion. Material flows continuously from the shovel through the processing rig and into the truck, eliminating idle time and suspension periods. This continuous action allows the shovel to operate at full capacity without interruption, significantly improving productivity while maintaining flexibility.
2Device complexity
If rigid classification of materials is used, then processing simplicity is improved, but waste transportation increases
Solution Approach 1:
The mobile processing rig incorporates a scanning system that continuously analyzes material composition and provides feedback to the classification module. This feedback mechanism enables real-time adjustment of classification criteria based on actual material properties, allowing the system to adapt to economic fluctuations and optimize the separation of usable ore from waste, reducing unnecessary waste transportation.
Solution Approach 2:
The classification system transitions from rigid, fixed criteria to dynamic, adaptable classification. The scanning system continuously monitors material composition and adjusts classification decisions in real-time based on current economic conditions and material characteristics. This dynamic approach allows the system to maximize the separation of useful ore from waste while maintaining processing efficiency.
3Quantity of substance
If large trucks are used for transport, then transport capacity is improved, but fuel consumption and maintenance costs deteriorate
Solution Approach 1:
The system segments the transport function by introducing a mobile processing rig that can be positioned close to the mining face. Instead of using large trucks to transport all mined material long distances, the processing rig handles material locally, processing and classifying it at the source. This segmentation reduces the required transport capacity and distance, thereby lowering fuel consumption and maintenance costs while maintaining effective transport of processed material.
Data Source
AI summary
A material conveyor apparatus is described comprising a conveyer device having a material receiving end suitable for receiving material such as overburden or mineral at a working site, a material discharge end distal of the material receiving end, and a material transport system disposed between the material receiving end and the discharge end so as in use to cause material received at the material receiving end to be conveyed to the material discharge end; an scanning system comprising a scanning device disposed to scan the material being conveyed to the material discharge end and obtain a response from the material from which the material may be classified at least into two classes comprising at least a waste class and a useable ore class based on the response; a chassis supporting the conveyor device and the scanning device; a transport carriage supporting the chassis and adapted to cause the chassis to be movable across a surface for deployment in use.