Design, Development and Performance of a New Solid Mercury Dispenser for Fluorescent Lighting
Abstract：The development of an improved Hg dosing solution in the form of SnHg50 spheres is described in this publication. The main asset for using a SnHg50 alloy is the presence of liquid Hg in the pellets. Thermodynamical calculations show that both at room temperature and at lamp operating temperatures, important part of the alloy is liquid Hg. This liquid Hg phase ensures a Hg vapor pressure which is higher than the one for ZnHg50 and just below the one of liquid Hg. The production process of the SnHg50 pellets is based on the surface tension of the melt, resulting in highly round and homogeneous spheres. To avoid the presence of liquid Hg at the surface of the spheres, they are coated using a powder. This results in pellets which handle like solid spheres having an excellent flowability and allowing for high lamp manufacturing speeds.
Keywords：run-up timefluorescent lightinglow mercurymercury reductionsustainability in fluorescent lightingsolid mercurymetal ball jettingmercury ball tomography
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 22-26 )