JP2830370B2 - Equipment for supplying linear additives to molten metal - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an improvement in a supply device of a linear additive to be added to a molten metal for degassing or the like.

[Prior Art] In the smelting or refining of metals, a large amount of degassed oxygen or hydrogen absorbed during melting, desulfurization of sulfur or the like contained in raw materials, and furthermore, bonding with impurities and floating as slag. For the purpose of purifying the molten metal itself, for example, an additive mainly containing an element having a strong affinity for gases and impurities such as aluminum and calcium is introduced into the molten metal in the ladle. I have.

The linear additive is a product obtained by processing such an additive into a linear shape, which is wound and drawn out using an input machine,
It is guided using a guide pipe and is continuously charged into the molten metal.It can be mechanically inserted deeper into the molten metal than a block-shaped additive, and the amount of addition can be adjusted. It has the advantage of being easy.

A conventional supply device for introducing such a linear additive into a molten metal is as shown in FIG.

That is, 1 is an inlet guide roll, and the wound linear additive 20 is drawn in from this inlet guide 1,
The curl is corrected by the straightening roll 2 and the pinch roll 4
To the exit guide 5. Reference numeral 3 denotes an input device drive motor that drives the straightening roll 2 and the pinch roll 4.

A guide pipe 11 ′ is attached to the outlet guide 5, and the linear additive 20 is guided into the guide pipe 11 ′ and injected into the molten metal (not shown) from the tip of the guide pipe 11 ′.

[Problems to be Solved by the Invention] It is usual that the supply device and the ladle are far apart, and the guide pipe inserted into the ladle becomes considerably long. Then, since the ladle in which the addition of the additive has been completed moves to the next casting process, etc., the guide pipe does not obstruct such movement at that time, and also for other work. It is necessary to evacuate so that it does not interfere.

For this reason, although the details are omitted in FIG. 2, the outlet guide 5 can move the tip of the guide pipe 11 ′ in the vertical direction, the horizontal direction, or the front-back direction with the outlet guide 5 as a fulcrum. In addition to adjusting the charging position of the linear additive into the molten metal, the guide pipe 11 'can be retracted upward when the ladle is moved.

In addition, in a supply device having a simpler structure, there is a supply device in which a guide pipe is configured to be detachable and the guide pipe is detached when retreating.

However, although the conventional device shown in FIG. 2 has a structure in which the guide pipe 11 'can move,
Since the moving range is extremely limited and moves only around one fulcrum, the tip of the guide pipe 11 cannot be freely moved to a desired position of the ladle. In addition, the ladle to which the additive is being added is often covered with a lid, but the conventional apparatus has a structure in which the tip of the guide pipe draws a large arc around the fulcrum and is inserted into the ladle. Therefore, there was a problem that the ladle had to be greatly opened in order to insert the guide pipe.

In addition, with the method of attaching and detaching the guide pipe, not only the range of movement of the guide pipe is further limited, but also the operator has to approach the edge of the ladle containing the high-temperature molten metal, which is dangerous and There is a problem that the conditions are poor and a lot of time is required, and it is difficult to properly supply the additive to a target position of the molten metal in the ladle.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-described problems of the prior art, and to retreat the guide pipe very easily when the ladle is moved. In addition to being able to insert a guide pipe without making a large opening, a new type that allows the tip of the guide pipe to be freely moved over a wide range of the molten metal in the ladle to easily add the additive to a target position. It is an object of the present invention to provide a device for supplying a linear additive.

[Means for Solving the Problems] The present invention relates to an apparatus for feeding a linear additive into a guide pipe and feeding the additive into a molten metal through the guide pipe, and vertically moving a support member supporting the guide pipe. In addition, the guide pipe is configured to be rotatable in the horizontal direction, and the tip of the guide pipe is configured to be independently movable in the vertical direction.

[Operation] If the support member supporting the guide pipe is configured to be vertically movable and rotatable in the horizontal direction, the support member itself can be moved to retract the guide pipe,
The guide pipe can be quickly retracted to an appropriate position that does not hinder the work. Insertion of the guide pipe into the ladle is not performed by inserting a guide pipe supported at a single point in a circular arc as in the conventional apparatus, but is supported by the support member with the support member supporting the guide pipe. First, the guide pipe is moved to the target position above the melt, and then the supporting member is lowered, so that the guide pipe can be lowered straight from above without moving the guide pipe in an arc. There is no need to open the pot large. In addition, since the tip of the guide pipe can be moved up and down independently, it is possible to freely adjust the injection height of the additive according to the height of the molten metal level, so that injection under optimal conditions is possible. In order to move the guide pipe back and forth, the tip of the guide pipe can be moved to any position on the molten metal surface by installing the entire supply device on the moving trolley, and can be moved to any position on the intended molten metal surface. It is also possible to reliably supply the additive.

EXAMPLES Hereinafter, the present invention will be specifically described with reference to examples.

FIG. 1 is an explanatory view showing an embodiment of a supply device according to the present invention.

1 is an entrance guide roll, 2 is a straightening roll, 3 is a feeder drive motor, 4 is a pinch roll, and 5 is an exit guide. These structures are not particularly different from the conventional apparatus described above.

The present invention is different from the first embodiment in that the configuration described below is added.

That is, in the present invention, the guide stand 6 is installed, and the elevating slide column 8 is erected from the guide stand 6, and the elevating slide column 8 supports the guide pipe 11. Block 7
Are mounted so that the column 8 can be slid up and down by driving a lifting drive motor 9. On the other hand, the guide stand 6 is also provided with a turning drive motor 10 so that the elevating slide column 8 on which the elevating slide block 7 is attached can be rotated in the horizontal direction.

Reference numeral 11 denotes a guide pipe supported by the lifting slide block 7 as a support member, and functionally guides the introduction of the linear additive as in the conventional structure.

The tip of the guide pipe 11 is directly adjacent to the molten metal 17 in the ladle 16 and receives a splash of the molten metal,
In this embodiment, the tip guide 12 made of a refractory material or the like can be easily and quickly detachably mounted by a quick clamp method. . The distal end of the guide pipe 11 having such a configuration is fixedly attached to the distal end of the distal guide elevating wire 13, and the distal guide elevating wire 13 is wound around the distal guide elevating wire winding drum 14. The configuration is such that the take-up drive motor 15 can be driven to take up or rewind, whereby the tip guide 12 can be moved independently in the vertical direction.

In addition, in this embodiment, in order to raise and lower the elevating slide block 7, an appropriate method such as a method using a chain or a wire or a screw rotation method may be selected, and there is no particular limitation.

To retract the guide pipe 11 in the present embodiment,
If the elevating slide block 7 is raised, the elevating slide column 8 is rotated, and the guide pipe 11 raised by the elevating slide block 7 is turned, it is possible to easily and quickly retreat to a position that does not hinder the work. it can.

When the new ladle is moved, turn the guide pipe 11 again to bring the tip onto the molten metal 17 or lower the elevating slide block 7, and the guide pipe
The tip of 11 can be lowered vertically above the melt surface.
Thereby, the opening of the ladle lid can be made small, and it becomes possible to prevent splash scattering and escape of the reaction gas during the addition of the additive.

Up-and-down adjustment of the tip guide 12 on the molten metal surface may be performed by the tip guide lifting wire 13 described above. At this time, by installing something like a scale plate separately, it will not be visible (in general, the inside of the ladle is not visible)
The positioning of the tip guide 12 can be performed accurately.

Also, if you want to move the guide pipe 11 also in the front and rear direction, casters and wheels are attached under the base 18,
If the entire device can be moved forward and backward, it can be easily moved back and forth.

As described above, if the guide pipe can be moved up and down, swiveled, and further moved back and forth, the tip of the guide pipe can be freely moved to any position on the molten metal surface, and the purpose is an additive. It is possible to accurately feed the molten metal to the molten metal position.

In addition, when the input position is a fixed position or a fixed range, by allowing each of the above-described movements to be automatically operated by a limit switch or the like,
It is also possible to cause automatic addition of additives.

[Effects of the Invention] As described above, according to the supply device of the present invention, the following excellent effects can be exhibited.

(1) Conventionally, since the exit guide is tilted up, down, left and right, the additive enters the guide pipe in a bent state at the exit guide. It becomes possible.

(2) The opening of the ladle lid can be made smaller by raising and lowering the exit guide vertically, so that splash scattering during addition of additives and outflow of reaction gas to the outside can be prevented.
Positioning of the guide pipe is facilitated.

(3) It is possible to cope with a change in the molten metal surface by raising and lowering the tip guide pipe, and it is possible to more reliably feed the additive.

(4) Compared with the conventional example in which the guide pipe is detached and retracted, the safety and simplicity of operation can be remarkably improved.

[Brief description of the drawings]

FIG. 1 is an explanatory view of an embodiment according to the present invention, and FIG. 2 is an explanatory view of a conventional example. 1: Inlet guide roll, 2: Straightening roll, 3: Feeder drive motor, 4: Pinch roll, 5: Exit guide, 6: Guide stand, 7: Elevating slide block, 8: Elevating slide support, 9: Elevating drive motor , 10: swivel drive motor, 11: guide pipe, 12: tip guide, 13: tip guide lifting wire, 14: tip guide lifting wire winding drum, 15: wire winding drive motor, 16: ladle, 17: molten metal , 18: base, 20: linear additive.

Claims (1)

(57) [Claims] 1. An apparatus for feeding a linear additive into a guide pipe and feeding the additive into a molten metal through the guide pipe, wherein a support member supporting the guide pipe is vertically movable and rotatable in a horizontal direction. An apparatus for supplying a linear additive to a molten metal, wherein the apparatus is configured so that the tip of a guide pipe is independently movable in a vertical direction.