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Sensor-based solutions for mining industry - Mining
Application example in mining: Sorting applications for hard to extract minerals are adding value to mining operations. With reliable and robust EVK technology, minerals can be analysed, and cameras calibrated, to precisely deliver the high performance required. Our expertise in mining is an essential tool in extracting the full potential of mining operations.
The mining industry was an early pioneer in sorting technology development, and for centuries it led to the improvement of mechanically assisted sorting of valuable ores from waste rock. A classic example is panning for gold by washing riverbed deposits.
Problem
The mineral extraction of Calcite from rock ore is often hampered by the natural occurrence of Chalk in the same ore. The high variability in rock ore composition and size requires a precise chemical mapping of each stone, whether large or small, in order to improve the extraction yield.
Solution
Sorting machines based on our camera technology can accurately sort down to very small sizes with user settable weightings for each mineral present. This allows the production yield of Calcite to be carefully controlled and ensures that the yield is not dependent on rock ore sizes.
Technology
Near Infrared Hyperspectral Imaging offers the degree of classification accuracy necessary for Mining applications, by directly measuring the chemical molecular composition through the absorption of light (spectroscopy).
EVK’s portfolio of sensor-based sorting technology includes Colour, Hyperspectral and Inductive sensor systems, which can be used individually or, with Sensor- Fusion, can be combined to form a powerful sorting application that can process multiple material types.
Problem
Currently, estimations of copper extraction yield from copper ore can only be established after the smelting process is completed.
Solution
The grading and sorting of copper ores according to their copper content using quantitative Chemical Imaging allows for precise yield prediction. Transferring reference analytical information into the production line enables the prediction of the amount of copper in the input stream present. It is, thus, possible to predict the percentage of copper metal contained in the product stream at the very beginning of the line.
Copper extraction from copper ore is described here in more detail: https://en.wikipedia.org/wiki/Copper_extraction
Technology
Near Infrared Hyperspectral Imaging offers the degree of classification accuracy necessary for mining applications, by directly measuring the chemical molecular composition through the absorption of light (spectroscopy).
EVK’s portfolio of sensor-based sorting technology includes Colour, Hyperspectral and Inductive sensor systems, which can be used individually or, with Sensor- Fusion, can be combined to form a powerful sorting application that can process multiple material types.
Talc is a mineral that is commonly used in the production of many industrial products. For instance, talc is present in cosmetics, paper, plastic, paint and coatings, rubber, food, electric cables, pharmaceuticals and ceramics, to name a few. A source of talc is the mineral soapstone or steatite, which has a high abundance of talc and is white, or sometimes coarse greyish-green, in appearance.
Problem
The optical colour similarities, between white talc and white gangue in the rock ore, makes the task of distinguishing and sorting very hard to accomplish.
Solution
Near-infrared Chemical Imaging offers many advantages – developed over decades by EVK - that enable it to outperform any standard colour based sorting. Chemical Imaging can discriminate between two, apparently similar, rocks by detecting spectral differences in the near-infrared range.
Technology
Near Infrared Hyperspectral Imaging offers the degree of classification accuracy necessary for Mining applications, by directly measuring the chemical molecular composition through the absorption of light (spectroscopy).
EVK’s portfolio of sensor-based sorting technology includes Colour, Hyperspectral and Inductive sensor systems, which can be used individually or, with Sensor- Fusion, can be combined to form a powerful sorting application that can process multiple material types.
