Since the first ceramics were produced, iron and iron-bearing minerals have caused defects.  The problematic minerals occur naturally in the raw materials, with additional fine iron accidentally introduced during transportation, storage or processing. Effective removal often involves several stages of magnetic separation.  However, the introduction of High-Intensity Electromagnetic Filters proved ground-breaking in terms of removing…

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Bunting Magnetics Bauma

Magnetic minerals and fine iron have plagued ceramic producers since the first glazed pot was produced many thousands of years ago.  Early ceramicists adopted elaborate and colourful patterns to cover any imperfections caused by such contamination.  Over time, the demand for white or single coloured ceramic products increased, making disguising any imperfection increasingly difficult. Ceramic…

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Ceramic Tiles

When fine iron and iron-bearing minerals contaminate the raw material used to produce ceramic tiles, the consequences are costly. Such iron contamination causes visual and structural defects as well as affecting the surface finish in terms of brightness and whiteness.  Tiles failing final quality checks are commonly returned for recycling. Those passing the initial quality…

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Bunting Magnetics In Line Magnet

The Inline Magnet is a versatile and popular magnetic separator used widely to capture tramp ferrous metal contamination. The non-obstructive design suits applications in many different applications including food processing and plastics.  In this blog, we review the different designs and the Inline Magnet’s key advantages and disadvantages Inline Magnet Models The Inline Magnet is designed…

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Bunting Magnetics Pull Test Kit

A Magnetic Separator attracts, captures and holds magnetic particles.  The magnetic strength needed to successfully separate such problematic ferrous metal contamination is commonly stated in a magnetic separator supplier’s quotation or specified in the tender.  This ‘Magnetic Strength’ is usually referenced in terms of ‘Gauss’, a unit of measurement.  However, as it is difficult to accurately measure…

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Iron-Specked_Ceramic_Tableware-0537

Fine iron and iron-bearing minerals cause visual and structural defects in ceramic tableware.  Such contamination appears as small dark spots on the surface or is hidden within the body and causes premature cracking of the ceramic.  The cup, saucer or plate is then either rejected or reworked. Iron contamination The problem of iron contamination is…

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Market stall mineral in India

Effectively separating fine iron from dry powders is often challenging. Even the strongest magnetic separator may fail to successfully remove the magnetic particles. In order to find a successful solution, it is important to understand the way fine materials behave. Only then is it possible to determine the optimum method to cleanse a powder of…

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Bunting Distributors Training Meeting 2020

Bunting distributors from across Europe converged on the Redditch site for the inaugural European Sales Conference. The two-day event included classroom and practical training on a wide range of magnetic separators and metal detectors. On day 1, there was a focus on equipment for the recycling sector. This included permanent and electromagnetic Overband Magnets, Pulley…

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X-ray fluorescence analysers

The purchase of a new X-ray fluorescence (XRF) analyser enhances the mineral testing capabilities of the Bunting test laboratory based at the manufacturing facility in Redditch, UK.  Hitachi High-Tech Analytical Science, based in Abingdon, UK, supplied the X-MET8000 Expert XRF analyser and provided comprehensive training for the technical staff at Bunting. The Science of X-Ray…

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Ceramics UK 2019

The last UK-based ceramics focused exhibition was staged in Telford, UK over twenty years ago.  In July 2019, once again in Telford, the new Ceramics UK show once again thrust ceramics into the spotlight, providing the perfect showcase for the sector.  Ceramics UK was co-located in Telford, UK with The Advanced Materials Show. Over twenty…

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