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Malvern, UK -- A research team led by Professor John Dodds at the RAPSODEE research centre, Ecole des Mines in Albi, France, is using a Malvern Spraytec particle size analyzer as part of a project to better understand the mechanics of powder handling. The system will be used to examine dust emissions from powder streams in order to assess the risk of dust exposure.
This project, which is part of a research program managed by the French National Institute of Research and Security (INRS), seeks to quantify potentially hazardous dust emissions. A key task is to investigate the effect on dust formation of powder properties and powder geometry. Using the Spraytec, mean concentration and particle size distribution data, critical elements in the work, can be generated without disturbing the powder flow.
The team at the Ecoles des Mines was one of the first to use the new generation Spraytec system. This laser diffraction-based analyzer is designed for the measurement of particle size in aerosols and sprays.
Two features make it especially suited for this application. The first is its ability to measure aerosol distributions over a wide range of particle sizes, ensuring that all particle information is captured. Secondly, the Spraytec’s large working range allows measurement of particles even if they are at a distance from the detector, so the powder plume can be analyzed easily without risk of contaminating the optics. This, coupled with a versatile bench design, is allowing real time measurement of dust production during powder flow from silos.
In the EU, approximately 60% of industrial products or intermediates involve particulate solids in one form or another. The risk to workers of dust exposure is therefore significant. By better understanding how dust generation relates to powder properties, the team at RAPSODEE hope to be able to inform the design of new processing, conveyance and storage systems in order to reduce or eliminate the risks involved.
About Ecoles des Mines Albi
The RAPSODEE research centre at the Ecoles des Mines Albi is a joint collaboration between the Centre National de la Recherche Sientifique (CNRS) and the Ecole des Mines d'Albi-Carmaux (EMAC). The objectives of RAPSODEE are to improve the solid processing methods used in industry for particle production, product formulation and design, processing and stabilisation. The main scientific themes are those from chemical and process engineering involving process information handling, expertise in structuring products to achieve specific properties, multi-scale and multi-tool analysis and process intensification.
About Malvern Instruments
Malvern Instruments is a global company that develops, manufactures and markets advanced analytical systems used in characterizing a wide variety of materials, from bulk powders to the latest nanomaterials and delicate macromolecules. Innovative technologies and powerful software produce systems that deliver industrially relevant data enabling customers to make the connection between micro (eg particle size) and macro (bulk) material properties (rheology) and chemical composition (chemical imaging). Malvern laboratory, on-line and in-line solutions are proven in sectors from cement to pharmaceuticals and support the understanding, improvement and optimization of many industrial processes.
Web site: http://www.malvern.com/
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