DE480087C - Melting furnace with a collecting space for iron and slag in front of the shaft, from which iron and slag flow continuously in different directions - Google Patents

Description

Melting furnace with a collecting space for iron and in front of the shaft Slag from which iron and slag continuously flow in different directions Melting furnaces with a collecting space for iron and slag upstream of the shaft the iron and slag continuously drain away separately., are known.

According to the invention, the collecting space is provided with a slag drain connected to the shaft by a channel rising from the bottom of the shaft and with a drainage channel for pure iron that rises from its bottom Mistake.

With this special design of the collecting space, the leg becomes a double siphon created with the effect that the rising from the shaft bottom of the furnace, Siphon opening into the collecting chamber holds back the blower air in the furnace shaft, but Allows iron and slag to enter the collecting chamber, from the bottom of which the pure iron is then withdrawn through the second siphon, while the lighter one Slag drains off at the top. A high column of slag is retained in the furnace shaft, which are due to the newly to be melted, and from the bottom of the shaft in the same way Amount of draining slag is continuously regenerated and with the over the. entire furnace cross-section iron droplets trickling down can react in a known manner. Except for the clean ones and reliable separation of iron and slag will also be far-reaching Degassing and improvement of what leaves the furnace immediately after melting down Iron achieves.

In. the drawing is an exemplary embodiment of the melting furnace shown in section.

In the jacket of the furnace i there is a sloping upward slope towards the outside gradually widening canal r attached, which begins a little above the sole and opens into a collecting space t which is provided with a drainage channel g at the top and from its base a likewise rising drainage channel h obliquely upwards leads.

As a result of the pressure of the slag column and the wind in the furnace shaft, liquid iron and slag are pressed through the channel r into the collecting space t, as they stratify, unaffected by the wind pressure. The pure iron is drawn off from the bottom of this collecting space t through the channel h, while the slag flows off through the channel g. The uninterrupted outflow of both masses can be interrupted for a certain time by turning off the blower wind, because. then in the channel r or h the overflow points p and f are no longer flooded.

The vertex p or f is determined in the white that there is always a certain amount of slag in the furnace, which is necessary for carrying out the process. is present, while the quantity of molten iron that is obtained is constantly being pushed out of the inside of the furnace through the channel r, so there is no iron bath inside the furnace. A protective layer of slag always remains above the iron bath in the collecting space, so that the liquid iron only comes into contact with the outside air at the mouth f of the canal h. The remainder of the molten iron remaining in the collecting space t after melting is drained through the tap hole y.

Claims (1)

PATENT CLAIM: Melting furnace with collecting space in front of the shaft for iron and slag, from which iron and slag continuously in different directions drain, characterized in that the one provided with a slag drainage channel Collecting space (t) with the shaft through a "leading down to the shaft bottom", siphon-like channel is connected, while from its base a likewise, Siphon-like channel leading to the discharge of the pure iron upwards.