Übersetzung für "Furnace load" in Deutsch

For brown coal combustion, in which exhaust gas temperatures between 250° C. and 350° C. occur after the gas is exhausted from the combustion chamber, depending on the operating time of the furnace, the load case and design, a proportion of chromium oxide (Cr2 O3) is selected in the mixture to be between 5 percent by weight and 20 percent by weight.

For melting chamber firings, for ballast bituminous coal which is burned at high temperatures, the exhaust temperatures, depending on the operating time of the furnace, the load case and the design, are typically approximately 350° C. to 450° C. The chromium oxide portion is for this case then set to less than 1 percent by weight.

The FIGURE shows a hearth furnace with direct loading.

In order to allow the furnace to be loaded from the top, the cover can be opened.

Furthermore human operators must be kept away from the immediate vicinity of the furnace and the loading and unloading station, as much as possible, because these persons have been found to be a source of contamination, which impairs clean room conditions and reduces the efficiency of semiconductor production.

The apparatus makes possible, for example, a method for pouring a metal alloy, in particular a copper alloy, in which the pourable melt from a melting furnace is poured with the continuous casting method at least partially in a shielding gas atmosphere, the melting furnace first being loaded with a melting charge which is then melted.

First the open melting furnace is loaded with melting charge, for example copper cathode sheets, and the melting charge is then melted in air under a charcoal cover.

According to a second variant, the open melting furnace is loaded with melting charge, whereupon the furnace cover and the melting-furnace-mounted portion of the pouring tube are closed off with a closure plate and the melting furnace, along with the associated portion of the pouring tube, is flooded with argon.

In the first melting phase (b) after the loading, that is, after the introduction of the material to be melted, much solid, not yet melted metal is located in the furnace chamber in the case of a hearth furnace with direct loading.

The work piece can be heated either in a chain conveyor furnace or in a roller hearth furnace, on whose ends the work pieces fall or slide into the quenching bath or in a hood-type furnace which is loaded from below and from which work pieces can be reeled-out quickly.

In the case of a hearth furnace with direct loading, the material to be melted is introduced directly into the furnace chamber of the hearth furnace.

Protective furnace gas which is not yet loaded with zinc dust is mixed with protective furnace gas loaded with zinc dust and is extracted in the spatial vicinity.

Apart from the suction fan or suction ventilator 9, a zinc separating apparatus 10 for cleaning the protective furnace gas loaded with zinc vapour and/or zinc dust is integrated in the return line 8 .

The cracking furnace 11 is loaded with a stream A as a furnace charge, which may in part be a fresh charge provided from sources outside the system, and in part be a recycled stream obtained within the method itself.

Protective furnace gas loaded with zinc vapour and/or zinc dust is extracted via extraction openings which are arranged on both sides of the metal strip adjacent to the injection openings.

In the apparatus according to the invention, the furnace pipe is therefore provided with injection openings via which the upper side and the lower side of the metal strip can be acted upon by protective furnace gas, wherein extraction openings for extracting protective furnace gas loaded with zinc vapour and/or zinc dust are arranged adjacent to the injection openings.