Method of removing exhaust gases from plastic binded sand molds
AssigneeGeorg Fischer Aktiengesellschaft
InventorHans Riester
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Abstract
In casting operations using molds made of plastic-bonded sands, the exhaust gases generated from the plastic binder are collected within an enclosure to which the mold passes from a casting location, the gases are mixed with combustion air supplied into the enclosure and an ignition source is arranged within the enclosure to ignite the combined exhaust gases and combustion air. The enclosure is insulated to retain the heat generated in the combustion operation. An outlet is provided from the enclosure so that any unburnt gases remaining from the exhaust gases can be collected and harmful substances removed to avoid any pollution of the atmosphere.
Claims4
Method of removing exhaust gases produced from a plastic binder used in molding sands employed for forming casting molds where the exhaust gases are formed by the heat given off from the melt in the mold to the plastic-bonded sand during casting at a casting location, comprising the steps moving the mold from the casting location and during such movement enclosing the mold within a space, collecting the exhaust gases within the enclosing space, adding combustion air into the enclosing space for combination with the exhaust gases for forming an ignitable mixture, and igniting the mixture within the space for the combustion of the exhaust gases therein.
Dependencies are inferred from the claim text.