Abstract: A method for processing electric storage batteries, particularly lithium/thionyl chloride batteries, which includes the steps of discharging the batteries, lowering the temperature of the battery components to -180.degree. C., and cutting the battery into pieces while in its cold state before further processing. The process can also include the further steps of incineration, collecting the solid, liquid and gaseous discharges from the incinerator, washing the solid and liquid discharges with water and the gaseous discharge with an alkaline solution, mixing the resultant wash streams, separating precipitates formed from the mixed stream and neutralizing the remaining solution.

Abstract: Processes for the production of alumina and cement constituents from fly ash, in which the fly ash is subjected to magnetic separation removing magnetic constituents; the remaining non-magnetic fraction of fly ash is then mixed with a calcining agent and water, pelletized, dried and calcined, cooled, and then either acid cured or subjected to a hydrothermic shock treatment in sulfuric acid; the mixture is then diluted with water, filtrated, purified by a solvent extraction process, and evaporated yielding aluminum sulfate, which is then subjected to liquid-solid separation and decomposed at an increased temperature at which the sulfur in the form of sulfur oxide gases and the water vapor is driven off, alumina remains. The leach residue of the alumina extraction yields useful material for cement production.