TW201030298A - Slag door for metallurgical furnaces - Google Patents

Abstract

The object of the invention is to provide a slag door for metallurgical furnaces, wherein a slag door opening in the upper vessel of the furnace is provided with a door tunnel with a sill, and the slag door can be actuated by a closing mechanism. This object is met in that the closing mechanism is arranged outside the furnace wall and in front of it, and in that the clear cross-sectional area of the slag door opening can be closed by means of at least two horizontally swivelable door leaves.

Description

201030298 VI. Description of the Invention: [Technical Field] The present invention is directed to a slag door of a metallurgical furnace in which a door passage having a gate (sui) is provided at a slag door opening of an upper vessel of the metallurgical furnace (door tunnel), and the slag door can be actuated by the closing mechanism. [Prior Art] WO2007/1 47248 discloses a slag door formed of three parts. The upper door portion or door leaf is formed by a flap that is rotatable about a horizontal axis, and below the upper door leaf, two finger-shaped door leaves are provided which are rotatable about an upright axis. Both the rotating mechanism of the rotary plate and the adjusting or closing mechanism of the lower door leaf are disposed in the furnace wall of the furnace vessel. φ [ SUMMARY OF THE INVENTION The object of the present invention is to provide a slag door which is less complex in construction and which, in particular, can also be subsequently installed in existing metallurgy without large-scale transformation. furnace. The above object is achieved according to the invention by a slag door of a metallurgical furnace in which a slag door opening in a container above the metallurgical furnace is provided with a door passage having a door sill, and the slag door can be actuated by a closing mechanism, The feature is that the closing mechanism is disposed outside the furnace wall of the metallurgical furnace and in front of the furnace wall, and the net cross-sectional area of the slag door opening can be closed by at least two door leaves that can be horizontally rotated -5 - 201030298' Wherein the door leaf can be locked in at least three positions, including a first position 'where the door leaf is substantially in a common plane; a second position 'which is perpendicular to the common plane and presents an open position; and a third position, wherein the door leaf is formed facing the metallurgical furnace The acute angle of the internal direction, and the opening gap is released between the door leaves. The appendix of the scope of the patent application shows a preferred embodiment in which four door leaves are provided, and these door fans are arranged in pairs so that one pair is above the other pair, and wherein the door leaves can be actuated independently of each other. The door leaf can also preferably be locked to a position where the door leaf opens outward at an acute angle so that controlled slag discharge can be performed via a gap formed between the edges of the door leaf. The invention will be described below with reference to the drawings. [Embodiment] In the schematic view of the drawings, the wall of the metallurgical furnace indicated by 1 is only a suggestive property. @ Door opening 2 is placed on the furnace wall 1. The schematically indicated frame 3 is shown in front of the door opening 2, or more precisely in front of the surface of the furnace wall formed by the furnace wall. The door fans 4, 5, and 6 to 9 are fastened to the frame 3' or held by the frame 3. A closing mechanism not shown is attached to the frame 3 for the respective door leaf. The individual parts of the drawing show where the door leaf can occupy. The off state is shown in the upper part of Figures 1 and 2. Depending on the requirements of the interior of the metallurgical furnace, one of the -6 - 201030298 doors or both doors can be opened. The particular features are shown at the bottom of Figures 1 and 2, wherein the door leaf forms an acute angle in the direction of the interior of the metallurgical furnace such that the gap remains between the opposite edges of the door leaf. This movability of the door leaf allows the door to be cleaned by pushing the slag back. Finally, another position of the door leaf not shown in the figure is opened at an acute angle. In this case 'as in the inwardly facing position, the gap is opened between the opposite edges of the door leaf φ' which allows the slag to flow out in a controlled manner. Of course, the door leaf can also be locked in any other position, but the important position is at least as described above. For example, when the door leaf can be individually adjusted and locked in different positions, this provides the possibility to control the amount of slag flowing out of the metallurgical furnace and/or the level of slag in the metallurgical furnace. Finally, Figure 3 shows the different positions of the door leaf, and in this case there are four door fans arranged in pairs. % In the open position 'the lower door leaf is used to monitor the slag and to clean the door sill' while the upper door leaf is allowed to continue to enter and exit the inside of the metallurgical furnace in its open position, for example to perform maintenance work. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing the configuration of a slag door having two door leaves, in which two door leaves are shown in different positions. Figure 2 is another embodiment of two door leaves. Figure 3 is an embodiment with four door leaves. 201030298 [Explanation of main component symbols] 1 : Furnace wall of metallurgical furnace 2 : Door opening 3 : Frame 4 : Door leaf 5 : Door leaf

6 : Door leaf 7 : Door leaf 8 : Door leaf 9 : Door leaf

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Claims (1)

201030298 VII. Patent application scope: 1. A slag door of a metallurgical furnace, wherein a slag door opening of a container above the metallurgical furnace is provided with a door passage having a door sill, and the slag door can be actuated by a closing mechanism, The utility model is characterized in that the closing mechanism is arranged outside the furnace wall of the metallurgical furnace and in front of the furnace wall, and the clear cross-sectional area of the slag door opening can be closed by at least two horizontally rotatable door leaves. Wherein the at least two door leaves are lockable in at least three positions, including a first Φ position 'where the at least two door leaves are substantially in a common plane; the second position 'is perpendicular to the common plane and exhibits an open position; And a third position 'where the at least two door leaves form an acute angle toward a direction of the interior of the metallurgical furnace, and an opening gap is released between the at least two door leaves. 2. The slag door of the metallurgical furnace according to claim 1, wherein four door leaves are provided, and the door fans are arranged in pairs so that one pair is above the other pair. 3. The slag φ door of a metallurgical furnace according to claim 1 or 2, wherein the door leaves are actuatable independently of each other. 4. The slag door of a metallurgical furnace according to claim 3, wherein the door leaf can be individually adjusted and can be locked in different positions such that the amount of slag flowing out of the metallurgical furnace and/or the metallurgical furnace The slag level within can be controlled. 5. The slag door of a metallurgical furnace according to any one of claims 1 to 4, wherein the door leaf is lockable to a position where the door leaf opens outward at an acute angle.