JP5536787B2 - Slag door for metallurgical furnace - Google Patents

Description

  The present invention relates to a slag door for a metallurgical furnace, in which a slag door opening is provided in an upper shell of a furnace having a door tunnel with a sill, and the slag door can be operated by a closing mechanism.

  Patent Document 1 discloses a slag door formed of three members.

  In this case, the upper door portion or door is formed by a gate that can pivot around a horizontal axis, and two finger-like doors that can pivot around a vertical axis are provided below the gate.

  Both the gate turning mechanism and the lower door door adjusting mechanism or closing mechanism are located on the furnace wall of the furnace shell.

International Publication No. 2007/147248 Pamphlet

  It is an object of the present invention to specify a slag door that requires little structural expenditure and that can be additionally installed without modification, particularly in existing metallurgical furnaces.

  This subject is a slag door for a metallurgical furnace according to the present invention, in which a slag door opening is provided in the upper shell of a furnace having a door tunnel with a sill, and the slag door can be operated by a closing mechanism Solved by.

  In that case, the closing mechanism is placed in front of the furnace wall outside the furnace wall to protect it from falling scrap iron, and the internal section of the slag door opening is closed by at least two horizontally pivotable doors Yes, the door door can be locked in at least three positions, and in the first position attached to these positions, the door door is substantially upright in one plane and the second position is perpendicular to the common plane. In the third position, the door door forms an acute angle facing the inside of the furnace, and this acute angle releases the opening gap between the door doors.

  Preferred configurations will become apparent from the dependent claims, the essence of which is that four door doors are provided in pairs and arranged vertically and the door doors can be operated independently of each other.

  Preferably, the door can still be locked even at a position where it will be opened at an acute angle towards the outside, and the slag can be discharged under control through a gap formed between the door door edges.

  The present invention will be described below with reference to the drawings.

Schematic illustration of a slag door configuration with two door doors at various locations. 2 shows another configuration of two door doors. Fig. 4 shows an embodiment with four door doors.

  In these diagrams, the wall of the metallurgical furnace is only suggested and is denoted by 1.

  A door opening 2 is provided on this wall. In front of the door opening 2 and more precisely, in front of the wall formed by the furnace wall, that is, in front of the wall, a frame 3 is symbolically suggested, and this frame has a door Doors 4, 5, 6-9 are fixed or held by this frame.

  A closing mechanism (not shown) is connected to the frame 3 for each door.

  The individual figures in these drawings show what position the door door can occupy.

  The closed state is shown in FIG. 1 or FIG.

  Depending on the need to access the furnace interior, one or both doors can be opened.

  In that case, the specialities are shown in the lower part of FIG. 1 or 2 respectively, and here the door doors-facing the inside of the furnace-make an acute angle, which makes the edge of the opposite door door edge A gap will remain between them. This mobility of the door door allows the sill to be cleaned by pushing back the slag.

  Finally, the position of the door door at an acute angle opened outward is not shown in the drawing. At that time, as in the inward position, a gap is released between the opposite door door edges, and this gap allows slag outflow under control.

  Obviously, the door door can be locked in any other position, but at least the positions are important.

  For example, if the door door is individually adjustable and lockable at various positions, this creates the possibility of allowing control of the slag outflow from the furnace and / or the slag height in the furnace.

  Finally, FIG. 3 again shows the different positions of the door doors, which in this case are arranged in four pairs.

  When in the open position, the lower door door helps to manage slag and clean the sill, while the upper door door allows further access to the furnace interior when in the open position, for example, to allow maintenance work to be performed. To do.

Claims (5)

In a slag door for metallurgical furnace, the slag door opening is provided in the upper shell of the furnace having a door tunnel with a sill, and the slag door can be operated by a closing mechanism,
The closing mechanism is disposed in front of the furnace wall outside the furnace wall;
The cross section of the inner portion of the Suragudoa opening is closable by at least two horizontal pivotable door leaf,
The door can be locked in at least three positions;
In the first position attached to the position, the door door is in a closed state so as to be substantially flat.
The second position is perpendicular to the one common plane, and means a open position,
In the third position, the door door forms an acute angle with respect to the one plane facing the inside of the furnace, and the acute angle releases an opening gap between the door doors. The slag door according to claim 1 , wherein the four door doors are provided so as to be vertically arranged in pairs. The slag door according to claim 1 or 2, wherein the door doors can be independently operated. The door leaf is adjustable individually, and it is possible locking in various positions, wherein, wherein the slag height of slag outflow and / or the furnace from the furnace can be controlled Item 4. The slag door according to item 3. Suragudoa according to any one of claims 1 to 4, wherein the door leaf in a position that will be opened at an acute angle to said first plane towards the outside is characterized in that it is locked.

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