Title: Arrangement for preventing the escape of dust and gas during the filling of a furnace

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Abstract: A furnace has a normally closed filling inlet. There is provided an arrangement for opening the filling inlet, then filling the interior of the furnace with a charge, and then reclosing the inlet, all in gas-tight and dust-tight manner, in order to prevent the free escape of dust and gases into the ambient atmosphere during the filling of the furnace. The arrangement includes a housing having an opening positioned in proximity to the normally closed filling inlet. A sealing arrangement is activatable for establishing a gas-tight and dust-tight seal between the portion of the housing surrounding the housing opening and the portion of the furnace surrounding the normally closed filling inlet, so as to confine within the interior of the housing any dust and gas entering the filling inlet or escaping from the filling inlet during the filling of the interior of the furnace. Inside the housing there is provided an arrangement activatable for opening and closing the normally closed filling inlet of the furnace. A filling arrangement is operative for conveying a charge through the interior of the housing and into the furnace filling inlet. The filling arrangement has a discharge end portion located within the housing gas-tightly and dust-tightly connected to the housing so that dust and gas leaving the discharge end portion but not entering the filling inlet is confined within the housing and is unable to freely escape into the ambient atmosphere. Advantageously, the arrangement is used in conjunction with a battery of furnaces having respective filling inlets arranged in a row, and the arrangement, as a whole, is movable into sealing engagement with successive ones of the filling inlets for filling successive ones of the furnaces.


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