Thermal Technologies To Convert Solid Waste Residuals Into Technical Glass Products

Solid waste residuals from waste incinerator flue gas cleaning systems consist of various oxides, alkali halogenide salts, heavy metal compounds and traces of organic pollutants. After the separation of the volatile components from the oxides and the complete destruction of the organics by a thermal treatment at a temperature >1200 deg C, the remaining oxides are obtained as a homogeneous black glass ready for direct reuse as a filling or stabilizing material, the production of glass ceramics by a further thermal processing and/or the use as a secondary raw material for the production of technical glass products, e.g. glass wool, glass fibre or foam glass.