en fr Study of foam glass elaborated from waste cathode-ray-tube CRT lead oxide containing glasses: Elaboration, physical and chemical characterizations and applications. Etude de mousses de verres issus de Tubes à Rayons CathodReport as inadecuate




en fr Study of foam glass elaborated from waste cathode-ray-tube CRT lead oxide containing glasses: Elaboration, physical and chemical characterizations and applications. Etude de mousses de verres issus de Tubes à Rayons Cathod - Download this document for free, or read online. Document in PDF available to download.

1 LPCMC - Laboratoire de physico-chimie de la matière condensée

Abstract : This work is devoted to search of possible applications for waste Cathode-Ray-Tube CRT glasses. Heavy elements contained in the glasses are required be buried land field by producers and recyclers of CRT-s.Foam glass seems to be the most promising for waste CRT glasses recycling. The foam glass is commercially available and a great amount of the CRT glass could potentially be used. The foam glass is obtained after heat treatment of a powder mixture of the CRT glass and reducing agent such as titanium nitride or silicone carbide. The basic principle of foam glass manufacture is to generate a gas, by reaction between the reducing agent and lead oxide contained in the funnel CRT glass. The gas expands thus producing a structure of cells to form a porous body.A low density leads to high porosity, about eighty percent, and a single pore size distribution has been obtained between 0.3 and 0.5 µm depending on the reducing agent used. Lead metallic granules are observed on the pore surface.The foam glasses obtained from the CRT glass are good insulators has evidenced by their low thermal conductivity



Author: François Mear -

Source: https://hal.archives-ouvertes.fr/



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