KR101542143B1 - Apparatus For Casting Copper Billet - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a casting apparatus for melting copper refuse collected for recycling, The structure is a cylindrical melting furnace in which a tapping tunnel is provided on a wall; And a casting part for producing a product such as a billet by supplying molten metal spouted from the melting furnace to the metal mold, wherein the casting part comprises: (43) which is located at the bottom of the outflow port and the other end extends to the outside of the furnace; A storage part 45 for temporarily storing the molten metal introduced along the first molten metal 43; Second and third baffles (49, 51) branch-extended from opposite sides of the storage part (45) in opposite directions; A first casting mold 53 installed at an end of the second casting casting 49; And a second casting mold (55) installed at an end of the third casting mold (51).

Description

Apparatus For Casting Copper Billet [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal casting system, and more particularly, to an improvement of a casting portion of a casting apparatus for producing billets by melting copper scrap collected for recycling.

Various parts and waste wires are collected for the reproduction of the motions. The collected raw materials are put into a furnace, melted by heating at a high temperature, and then reproduced into copper billets through a casting process. The raw materials are put into the melting furnace, melted and refined, and then spouted, and they are passed through the casting machine and become products such as billets.

A casting system of a widely used casting apparatus will be described as follows.

The capacity of the melting furnace is 10 tons, and the casting capacity of the casting machine to be used together is 5 tons.

If you prepare a molten metal in the melting furnace, 10 tons of molten metal is prepared. Since the casting machine can process only 5 tons at a time, casting must be done twice. In other words, we have to cast five tons in turn. The time required for one casting takes about 40 minutes, so it takes 80 minutes for casting twice. Considering the preparation time for casting, it takes about 2 hours to cast 10 tons of molten metal. During the casting of the first 5 tonnes of molten metal, the furnace should be kept heated to prevent cooling of the molten metal. In other words, you must supply heat to the melting furnace as a burner during the primary tapping time.

If the capacity of the melting furnace and the processing capacity of the casting machine are different from each other, the working time may be doubled, and there is a waste of heat energy to maintain the furnace in a heated state during the extended working time.

Korean Patent Application No. 10-2001-0065699 Korean Patent Application No. 10-2004-0043867 Korean Patent Application No. 10-2009-0019226 Korean Patent Application No. 10-2010-7012342

It is an object of the present invention to solve the above problems and to provide a casting apparatus for melting collected refractory copper or copper scrap and casting it into a billet to be used for keeping the melting furnace in a standby state when the treatment capacity of the melting furnace and the casting machine are inconsistent with each other And it is an object of the present invention to provide a casting structure capable of eliminating the waste of heat energy and greatly shortening the working time.

The above object is also achieved by a copper casting apparatus for melting raw materials collected for the reproduction of copper, refining them and reproducing them with a billet or the like;

A cylindrical melting furnace provided with a scrap injection port selectively opened and closed by a door part, a burner for heating the internal space on the other side, and a tapping port for discharging the molten metal on the wall; A melting furnace rotating device for reciprocally rotating the melting furnace about a cylindrical axis within a predetermined angle range; A raw material loading unit for loading the raw material into the melting furnace through the scrap inlet; And a casting part for producing a product such as a billet by supplying molten metal spouted from the melting furnace to the metal mold;

Wherein the casting portion comprises:

One side is located at the bottom of the outflow port, and the other side is a first bout extending to the outside of the melting furnace; A storage part for temporarily storing the molten metal introduced along the first molten metal; Second and third blanks extending in opposite directions from opposite sides of the storage portion; A first casting mold provided at an end of the second casting mold; And a second casting mold provided at an end of the third casting mold.

According to a feature of the present invention, the second breeze and the third breeze can be provided with a heat insulating means for preventing the temperature of the molten metal from lowering.

According to another aspect of the present invention, in the second blanket and the third blanket, second blanket heating means for heating the second blanket and the third blanket to prevent the temperature of the molten metal from lowering, A heating means can also be provided.

According to another aspect of the present invention, the storage unit is in the form of a flat container having a top and an open top, the top and bottom plates being open;

Wherein two drain holes are respectively formed in the bottom plate, the two drain holes being positioned directly above one end of the second and third channels;

And the outflow hole opening / closing means for controlling the flow of the molten metal by individually opening and closing the outflow holes may be provided.

Here, the outlet opening /

A valve vertically maneuverable on a straight upper portion of the toilet hole, the valve having a lower end in a shape of a cone; And a valve actuating unit for vertically actuating the valve.

According to an aspect of the present invention, the valve actuation unit includes:

A horizontal lever fixed to the storage unit so that a seesaw motion can be performed with a center as a fulcrum, and one end of which is connected to the valve; And a cylinder connected to the other end of the horizontal lever such that one end of the horizontal lever is vertically started.

According to the above-described configuration, it is possible to simultaneously perform tapping at the second and third hot water ducts extending from the tapping pot in the melting furnace in different directions, and the first and second hot metal tapes Casting molds will be cast simultaneously. As a result, the casting time is shortened by two times, and the time required to heat the melting furnace during casting can be reduced to at least half, thereby saving energy.

1 is a side view of a copper billet casting apparatus according to an embodiment of the present invention.
FIG. 2 is a schematic front view of a copper billet casting apparatus according to an embodiment of the present invention, and FIG. 3 is a plan view.
4 is a perspective view of a molten metal distribution unit of a copper billet casting apparatus according to an embodiment of the present invention.
5 is a partial front view of a copper casting apparatus according to another embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The present invention relates to a system for producing copper billets using the method of casting from raw materials collected for the reproduction of copper. Raw materials can be copper or copper scrap.

The copper billet casting apparatus of the present invention includes a melting furnace 1, a melting furnace rotating device, a raw material loading section 3, a casting section 5, and a gas injection section 7.

The melting furnace 1 serves as a heating space S in which a raw material is injected and melted. The melting furnace 1 has a cylindrical shape, and the inner wall is finished with refractory bricks. A scavenging inlet 11 which is selectively opened and closed by a door portion 9 is provided at one side of the melting furnace 1 and a burner for heating the melting furnace 1 by radiating a flame in the internal heating space S 13 are installed. The wall of the melting furnace (1) is provided with a tapping spout (15) for discharging the purified melt (M). The tapping spout (15) is opened at the time of tapping and closed at the time of melting and refining. Various known sealing methods for opening and closing the tapping tunnel 15 can be employed. When the raw material is dissolved, it is charged so that it is 1/3 of the total height of the internal heating space (S) of the melting furnace.

The burner 13 injects the flame directly to the raw material and heats only a part. Most of the heat applied to the raw materials is reflec- tion heat due to refractory bricks installed on the inner wall of the melting furnace. The melting furnace rotating device rotates the melting furnace around the axis X of the cylinder so that the reflec- tion heat can be sufficiently utilized and the raw material can be evenly mixed to melt evenly. It is not intended to continuously rotate in one direction but to reciprocate in a certain angle range. As a result, the raw material can be supplied with the reflection heat from the entire inner wall of the melting furnace 1.

The melting furnace rotation device includes a circular rail 17 provided before and after the melting furnace 1, a plurality of wheels 19 fixedly mounted on the bottom frame 20, and a wheel drive motor for driving the wheel 19 . When the wheel driving motor drives the wheel 19, the frictional force causes the circular rail 17 to start on the wheel 19, so that the melting furnace 1 can be rotated about the axis X. [ The rotation angle of the melting furnace 1 is in the range of 90 to 180 degrees. Since the melt 21 is installed in the melting furnace 1, the melt M must not flow out through the melt 21, so that the rotation angle is limited.

The raw material loading section (3) loads the raw material into the melting furnace (1) through the scrap input port (11). According to the embodiment of the present invention, the raw material loading section 3 transports and supplies the nuclear stock in a manner similar to a forklift truck. The transportation truck 23 equipped with the wheels can be moved back and forth along the bottom rail 25 provided on the floor. A post 27 is vertically installed at the front of the carriage 23 and an arm 29 is vertically movably installed along the extending direction of the post 27. The arm 29 is provided so as to be able to tilt in a predetermined angle range similar to the fork of the forklift. The arm 29 is equipped with an elongated tubular bucket 31 as a place where raw materials are contained. The bucket 31 is poured into the melting furnace 1 by inverting the bucket 31 by tilting or rotating the bucket 31 as an elongated vessel shape with the top opened.

The construction of the door portion 9 for selectively opening and closing the scrap input port 11 is as follows.

The door main body 33 is in the form of a disk, and a water jacket as a cooling means is formed inside. A lower end of the door support 37 is connected to the front side of the door body 33 and a wheel 36 capable of rolling along the upper rail 35 is installed at the upper end of the door support 37. The door actuating portion 39 made of a pneumatic cylinder or a hydraulic cylinder causes the door support 37 to horizontally move horizontally so that the door body 33 selectively opens and closes the scrap inlet 11. The door activation portion 39 is connected to the wheel 36 via the long connecting rod 38 so as not to be damaged by the high temperature of the melting furnace 1.

The door main body 33 can open and close the scrap inlet 11 while moving left and right as shown in FIG. According to such a configuration, there is no part vulnerable to heat such as a hinge in the structure of opening and closing the door, the door can be conveniently opened and closed, and the durability is also improved.

In the casting section 5, molten metal M spouted from the melting furnace 1 is supplied to the casting molds 53 and 55 to produce a product such as a billet. The billet is usually produced using the vertical continuous casting method.

Hereinafter, the casting section 5 which is an important feature of the present invention will be described.

The casting section 5 has a first bending path 43 which is located at the bottom of the tapping tunnel 15 and which extends to the outside of the melting furnace 1 at the other side and a second bending path 43 which temporarily stores the molten metal which is guided along the first bending road 43 And a storage unit 45 for storing the data. The casting section (5) has a melt distribution section (47) for distributing the molten metal stored in the storage section (45) in different directions. The molten metal distributing section 47 includes second and third molten metal 49, 51 branched from both sides of the storage section 45 in the opposite direction. The first casting mold 53 is installed at the end of the second casting mold 49 and the second casting mold 55 is installed at the end of the third casting mold 51. [

According to the embodiment of the present invention, the second breeze (49) and the third breeze (51) can be provided with heat insulating means (57, 59) for preventing the temperature of the molten metal from dropping. The heat insulating means (57, 59) is installed to surround the second and third baffles (49, 51) and may be a heat insulating material having a high heat resistance temperature.

On the other hand, when the heat insulating means is insufficient, the second bath temperature heating means 61 and the third bath temperature heating means 63 for heating the second bath temperature and the third bath temperature are respectively installed . The second and third heating means 61 and 63 actively prevent the temperature of the molten metal from being lowered by heating the molten metal flowing in the second and third molten metal 49 and 51 with the gas.

Hereinafter, the second and third heating means 61 and 63 will be described with reference to FIG. 5, and the second heating means will be described as an example. The third tang also has the same structure.

The second tundish 49 can be cut off from the outside air by the lid 50 and the lid 50 is provided with a number of auxiliary burners 60 along its extending direction. The auxiliary burner 60 is connected to a gas supply pipe 60a and an air supply pipe 60b. The auxiliary burner 60 supplies the flame to the molten metal passing through the second molten metal 49 in a reducing environment (environment of incomplete combustion). This is to prevent oxidation of the molten metal.

According to an aspect of the present invention, the storage unit 45 may be in the form of a flat container having an open top by being composed of a bottom plate 65 and a side plate 66. The storage unit 45 may have a wheel 48 so as to be movable along a storage bore 46 installed at the floor of the workplace. The upper surface of the bottom plate 65 is inclined so that the rear is shallow and the front is deeper. Two outflow holes 67 and 69 are formed in the front of the bottom plate 65, respectively, which are located on the top of the one end of the second and third baffles 49 and 51. Therefore, the molten metal can be discharged to the lower portion of the storage portion 45 through the discharge holes 67, 69. The molten metal flowing out through the first outflow hole 67 is supplied to the first casting mold 53 along the second molten metal and the molten metal flowing out through the second molten metal hole 69 flows along the third molten metal 2 casting mold 55 as shown in Fig.

According to the embodiment of the present invention, the outflow hole opening / closing means for controlling the flow of the molten metal by separately opening and closing the outflow holes 53 and 55 may be provided.

Here, the outflow hole opening / closing means is provided so as to be vertically maneuverable right above the outflow holes 67, 69, and includes valves 71, 73 whose lower ends are pointed in a conical shape and valves 71, And valve start portions 75 and 77 for vertically maneuvering. Since the two valve actuating portions 75 and 77 have the same configuration, only one of them will be described as an example.

The first valve actuating part 75 is fixed to the side wall of the storage part 45 so that a seesaw motion can be performed with the center part as a fulcrum 79 and includes a horizontal lever 81 having one end connected to the first valve 71 And a hydraulic or pneumatic cylinder 83 connected to the other end of the horizontal lever 81 such that one end of the horizontal lever 81 is vertically movable. The horizontal movement of the cylinder 83 is switched to the vertical movement of the horizontal lever 81 by the predetermined gear train.

According to such a configuration, the tip of the valves 71 and 73 can be opened or closed by opening and closing the outlet holes 67 and 69, respectively, so that the operator can adjust the spout by operating the mechanical switch at a long distance.

The first and second casting dies 53 and 55 are respectively provided with a plurality of pouring holes 53a and 55a and the molten metal injected into the pouring holes 53a and 55a is cooled to produce a cylindrical billet. It is needless to say that the number and diameter of the pouring holes 53a and 55a may be adjusted as necessary and may be different from each other in the first and second casting dies 53 and 55. However, it is desirable to distribute them uniformly at a ratio of 1: 1.

The configuration shown and described above is merely a preferred embodiment based on the technical idea of the present invention. It will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the present invention.

1: melting furnace 3: raw material loading part
5: casting part 7: gas injection part
9: door part 11: scrap inlet
13: Burner 15:
17: Circular rail 19: Wheel
21: Year 23: Carriage
25: bottom rail 27: post
29: arm 31: bucket < RTI ID = 0.0 >
33: door body 35: upper rail
37: door support 39:
43: first tank 45: storage section
47: molten metal distribution part 49, 51: second and third bath
53, 55: first and second casting molds 57, 59:
61, 63: second and third heating means
65: bottom plate 67, 69: outlet hole
71, 77: Valve starting portion 79: Fulcrum
81: Horizontal lever 83: Cylinder

Claims (6)

For the purpose of producing copper by melting and then refining and recovering it with billets etc. for the purpose of reproduction of copper;
A cylindrical melting furnace provided with a scrap injection port selectively opened and closed by a door part, a burner for heating the internal space on the other side, and a tapping port for discharging the molten metal on the wall; A melting furnace rotating device for reciprocally rotating the melting furnace about a cylindrical axis within a predetermined angle range; A raw material loading unit for loading the raw material into the melting furnace through the scrap inlet; And a casting part for producing a product such as a billet by supplying molten metal spouted from the melting furnace to the metal mold;
Wherein the casting portion comprises:
(43) which is located at the bottom of the outflow port and the other end extends to the outside of the furnace; A storage part 45 for temporarily storing the molten metal introduced along the first molten metal 43; Second and third baffles (49, 51) branch-extended from opposite sides of the storage part (45) in opposite directions; A first casting mold 53 installed at an end of the second casting casting 49; And a second casting mold (55) installed at an end of the third casting casting (51);
Wherein the door portion comprises:
A door main body 33 in the form of a disk, in which a water jacket is formed as a cooling means;
A door support (37) having a lower end connected to the door main body (33) and having an upper end mounted with a wheel (36) capable of rolling along the upper rail (35);
The door main body 33 selectively opens and closes the scrap injection port by horizontally moving the door support 37 in the left and right directions. The door main body 33 is connected to the wheel 36 via a long connecting rod 38, (39);
Wherein the cast billet casting apparatus comprises:
delete delete The method of claim 1, wherein
The storage unit 45 is in the form of a flat container having a bottom plate 65 and a side plate 66 and opened at an upper portion thereof;
Two outflow holes (67, 69) are formed in the bottom plate (65), respectively, located on the top of one end of the second and third baffles (49, 51);
And a spout hole opening / closing means for controlling the flow of molten metal by opening and closing the outlet holes (67, 69) individually.
5. The method of claim 4,
The outflow hole opening / closing means comprises:
Valves (71, 73) vertically maneuverably installed directly above the outflow holes (67, 69), the lower end of which is pointed in a conical shape; And valve actuating parts (75,77) for vertically actuating the valves (71,73).
6. The apparatus according to claim 5, wherein the valve actuating part (75,77) comprises:
A horizontal lever 81 fixed to the storage part 45 so as to enable a seesaw movement with a center point as a fulcrum 79 and having one end connected to the valves 71 and 73; And a cylinder (83) connected to the other end of the horizontal lever (81) so that one end of the horizontal lever (81) starts to move up and down.

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