The Role of Filters in Mining

The two components of the extractive industries – energy and non-energy – differ also in the nature of the extraction process. The energy materials are produced from the ground in a reasonably concentrated state, and subsequent processing involves refining with relatively little waste (except perhaps for coal and oil shales – and, as reserves become exhausted, the processing will become more difficult). By contrast, many metallic ores occur naturally mixed with large quantities of unwanted material – gangue – from which they have to be separated: the mineral dressing process. The proportion of waste tends to increase the more valuable the product metal is because high-value products (such as gold or platinum) can justify the cost of extracting and processing low-grade ores. In many cases, the nature of the materials in a natural deposit, metal ore on the one hand and gangue on the other, maybe so different – in density or surface properties – as to make their separation relatively easy.

The "mineral dressing" industry (i.e. the concentration of valuable ore materials out of its unavoidable mix with unwanted solids) is a good example of the employment of a very wide range of separation equipment, for use once the mined material has been comminuted to the state where the individual particles are each largely composed of one or other of the component materials. 

At this stage of the production process, filtration is largely used in the form of dry screens, stationary or vibrated, supplemented by devices such as shaking tables, jigs (using fluidized beds), and spiral separators. Filtration has a much more significant part to play in the process operations for the treatment of metallic ores and non-metallic minerals, once they have been classified in the dressing stages, where much of the processing and recovery take place in suspension in water. The equipment used here, such as vacuum belt filters or band presses, can be very large.

In the mining filtration process, the filter is the core equipment, and the filter element is the top priority. Choosing a high-quality filter element is also the key to improving work efficiency and filtration performance.

Hebei Yuanlv Filter Equipment Co., Ltd. can provide safer and more durable wedge wire filter elements for the mining industry, and each of our filter elements is customized according to different filter equipment, which perfectly meets the use of different types of filtration requirements. 

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