CN217058351U

CN217058351U - High-frequency graphite continuous aluminum melting furnace

Info

Publication number: CN217058351U
Application number: CN202220389751.7U
Authority: CN
Inventors: 王瑞利; 王瑞强; 王涛
Original assignee: Henan Dongpu Thermal Technology Co ltd
Current assignee: Henan Dongpu Thermal Technology Co ltd
Priority date: 2022-02-25
Filing date: 2022-02-25
Publication date: 2022-07-26
Anticipated expiration: 2032-02-25

Abstract

The utility model discloses a high frequency graphite melts aluminium stove in succession, including furnace body, bell, three graphite electrode, elevating gear, liquid outlet, establish first melting chamber and the heat preservation chamber of lower half in the furnace body, the aluminium ingot is heated by graphite electrode and gets into the heat preservation intracavity after to liquid in the melting intracavity, and the furnace body middle part is provided with at a distance from the net, it has the feed inlet to melt the chamber lateral wall and open, and heat preservation chamber bottom or bottom lateral wall are provided with the liquid outlet, and graphite electrode stretches into from the bell in the furnace body and by elevating gear control lift and circular telegram. The utility model provides a high frequency graphite melts aluminium stove in succession adopts the high temperature heating principle that graphite electrode produced electric arc, melts into aluminium liquid with the aluminium ingot fast in melting the chamber, then enters into the heat preservation intracavity, enters into continuous casting and rolling equipment from the liquid outlet at last, and reinforced continuous confession aluminium liquid in succession, and need not blow out the stove and blow in, and dissolution efficiency is high-speed fast, and aluminium liquid whole contactless oxygen prevents the oxidation.

Description

High-frequency graphite continuous aluminum melting furnace

Technical Field

The utility model relates to a metallurgical equipment technical field especially relates to a high frequency graphite melts aluminium stove in succession.

Background

The aluminum melting furnace is a key device for a casting production process in the aluminum processing industry, and has the functions of melting various aluminum solid raw materials at high temperature and then conveying the molten raw materials to a subsequent holding furnace for alloy component adjustment and casting production.

The common aluminum melting furnace in the aluminum processing industry adopts a chamber furnace type structure, the melting process of aluminum metal in the furnace comprises the steps of feeding materials into the furnace, heating to a melting point, solid-liquid conversion, heating aluminum liquid to a proper temperature, discharging and the like, and can be finished within a certain time. Therefore, the chamber type aluminum melting furnace is a typical periodic production operation mode, is matched with a subsequent holding furnace, and can meet various semi-continuous casting production process requirements.

The continuous casting and rolling production process such as the production line of the aluminum plate strip continuous casting and rolling and the aluminum wire rod has continuous and uninterrupted demand for aluminum liquid, and if the traditional chamber furnace type scheme is still adopted, the production process can only be realized by reasonably matching the capacities of the aluminum melting furnace and the heat preservation furnace and the quantity of equipment, but the small capacity is difficult to be increased, and the equipment investment cost is also very high.

What is needed is an aluminum melting furnace capable of continuously and rapidly melting aluminum, which can continuously provide aluminum liquid, and simultaneously can prevent the traditional chamber furnace type structure from losing heat when a furnace chamber is opened in a discharging link, and the aluminum liquid is directly contacted with oxygen to generate oxidation reaction in advance, thereby generating quality influence on the production of aluminum alloy.

Disclosure of Invention

The utility model aims at providing a high frequency graphite melts aluminium stove in succession for solving traditional room formula and melting aluminium stove and only can be intermittent type nature heating production to can lead to calorific loss and the technical problem of aluminium liquid oxidation in the link of blowing in, and provide a high frequency graphite melts aluminium stove in succession.

The utility model discloses a technical scheme do: a high-frequency graphite continuous aluminum melting furnace comprises: including furnace body, bell, three graphite electrode, elevating gear, liquid outlet, the furnace body adopts heat-resisting insulation material to make, establishes the heat preservation chamber of first melting chamber and lower half in, and the aluminium ingot is in it is heated to liquid back by graphite electrode and gets into to melt the intracavity the heat preservation intracavity, the furnace body middle part is provided with separates the net and is used for separating melting chamber and heat preservation chamber, it has the feed inlet to melt the chamber lateral wall and open, and heat preservation chamber bottom or bottom lateral wall are provided with the liquid outlet, the bell can open and shut the setting and be in the furnace body top, graphite electrode follows the bell stretches into in the furnace body and by elevating gear control goes up and down and circular telegram, it has three electrode hole that is used for passing through to open on the bell.

Furthermore, the side wall of the melting cavity is provided with three feed inlets, and each feed inlet is over against a gap between the three graphite electrodes.

Furthermore, the bottom of the heat preservation cavity is in an inverted cone shape with a low middle and high periphery, a slag discharge port is arranged at the center of the bottom, and a liquid outlet is arranged at the bottom of the side wall.

Furthermore, a heating device is arranged on the side wall of the heat preservation cavity and used for keeping the temperature of the heat preservation cavity to keep the molten aluminum in a liquid state.

Furthermore, the separation net is made of high-temperature-resistant materials, and a gap for molten aluminum to pass through is formed in the middle of the separation net.

Furthermore, a smoke extraction device is arranged above the electrode hole, and smoke emitted from the electrode hole is extracted through negative pressure.

Furthermore, the smoke extraction device comprises an annular smoke collecting hood arranged above the electrode holes, a smoke exhaust pipe connected with the annular smoke collecting hood and a final tail gas filtering device of the smoke exhaust pipe, and the smoke exhaust pipe is provided with an exhaust pump.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model provides a high frequency graphite melts aluminium stove in succession adopts the high temperature heating principle that graphite electrode produced electric arc, melts into aluminium liquid with the aluminium ingot fast in melting the chamber, then enters into the heat preservation intracavity, enters into continuous casting and rolling equipment from the liquid outlet at last, and reinforced continuous confession aluminium liquid in succession, and need not blow out the stove and open the stove, and the dissolution efficiency high speed is fast, and aluminium liquid whole contactless oxygen prevents the oxidation.

Drawings

Fig. 1 is a front half-sectional view of the present invention.

Fig. 2 is a plan view of the present invention.

Fig. 3 is a sectional view taken along line a-a of fig. 1.

The reference numerals are explained below:

1. a furnace body; 2. a furnace cover; 3. a graphite electrode; 4. a lifting device; 5. a liquid outlet; 6. a melting chamber; 7. a heat preservation cavity; 8. separating the net; 9. a feed inlet; 10. an electrode hole; 11. a slag discharge port; 12. a heating device; 13. a flue gas extraction device; 131. an annular smoke collecting hood; 132. a smoke exhaust pipe; 133. a tail gas filtering device; 134. an exhaust pump.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

As shown in fig. 1 to 3, a high-frequency graphite continuous aluminum melting furnace: comprises a furnace body 1, a furnace cover 2, three graphite electrodes 3, a lifting device 4 and a liquid outlet 5, wherein the furnace body 1 is made of heat-resistant heat-insulating materials, a melting chamber 6 of the upper half part and a heat-insulating chamber 7 of the lower half part are arranged in the furnace body, an aluminum ingot is heated to be liquid by the graphite electrodes 3 in the melting chamber 6 and then enters the heat-insulating chamber 7, a separation net 8 is arranged in the middle of the furnace body 1 and is used for separating the melting chamber 6 and the heat-insulating chamber 7, a feed port 9 is arranged on the side wall of the melting chamber 6, the aluminum ingot or the aluminum block continuously enters the melting chamber 6 from the feed port 9, the liquid outlet 5 is arranged on the side wall of the bottom of the heat-insulating chamber 7, the furnace cover 2 is arranged above the furnace body 1 in an openable and closable manner, the graphite electrodes 3 extend into the furnace body 1 from the furnace cover 2 and are controlled to be lifted and electrified by the lifting device 4, the lifting device 4 and the graphite electrodes 3 in the embodiment are not detailed general structures of a graphite electric arc furnace, the furnace cover 2 is provided with three electrode holes 10 for passing through the graphite electrode 3.

As shown in FIG. 3, three feed inlets 9 are formed in the side wall of the melting chamber 6, and each feed inlet 9 faces the gap between three graphite electrodes 3, so that the aluminum ingot does not contact the graphite electrodes 3 after entering the melting chamber 6.

Preferably, the bottom of the heat preservation cavity 7 is in an inverted cone shape with a low middle part and high periphery, a slag discharge port 11 is arranged at the center of the bottom, impurities in the molten aluminum are accumulated in the slag discharge port 11 and are periodically discharged, and a liquid outlet 5 is arranged at the bottom of the side wall.

Preferably, the side wall of the holding chamber 7 is provided with a heating device 12 for maintaining the temperature of the holding chamber so that the aluminum liquid is maintained in a liquid state. The heating device is an induction coil arranged on the outer side of the inner lining of the heat preservation cavity, alternating current is supplied to the induction coil to generate an alternating magnetic field so as to induce current to heat furnace burden in the magnetic field, and the induction coil and the furnace burden are isolated by the inner lining. Of course, the heating device can also be an electric heating element with a protective sleeve wound by a high-temperature resistance belt, and the electric heating element is arranged at the upper part of the thermal insulation cavity and does not directly contact with the melt to carry out radiant heating on the melt.

Preferably, the separation net 8 is made of high-temperature-resistant materials, and a gap for molten aluminum to pass through is formed in the middle of the separation net.

Because the flue gas contains a large amount of metal impurities and pollutants, the flue gas is prevented from being directly discharged into a factory building, a flue gas extraction device 13 is arranged above the electrode hole 10, the flue gas emitted from the electrode hole 10 is extracted through negative pressure, the flue gas extraction device 13 comprises an annular smoke collecting cover 131 arranged above the electrode hole 10, a smoke exhaust pipe 132 connected with the annular smoke collecting cover 131 and a final tail gas filtering device 133 of the smoke exhaust pipe 132, and an exhaust pump 134 is arranged on the smoke exhaust pipe 132.

The working process of the embodiment: the lifting device 4 is started to extend the graphite electrode 3 into the melting cavity 6, an aluminum ingot is placed from the feeding hole 9 and placed on the separation net 8, after the aluminum ingot is heated to be liquid by the electric arc high temperature of the graphite electrode 3, the aluminum liquid flows into the heat preservation cavity 7 below from the gap of the separation net 8, and finally enters the continuous casting and rolling equipment from the liquid outlet 5. Because the electric arc high temperature heating speed of the graphite electrode 3 is fast, the continuous and fast aluminum liquid output can be realized, the efficiency is high, the effect is good, and the aluminum liquid is not contacted with oxygen in the whole process to prevent oxidation.

The foregoing illustrates and describes the general principles, features and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.

Claims

1. The utility model provides a high frequency graphite melts aluminium stove in succession which characterized in that: including furnace body, bell, three graphite electrode, elevating gear, liquid outlet, the furnace body adopts heat-resisting insulation material to make, establishes the heat preservation chamber of first melting chamber and lower half in, and the aluminium ingot is in it gets into to liquid back by graphite electrode heating to melt the intracavity, the furnace body middle part is provided with separates the net and is used for separating melt the chamber with the heat preservation chamber, it has the feed inlet to melt the chamber lateral wall and open, and heat preservation chamber bottom or bottom lateral wall are provided with the liquid outlet, the bell can open and shut the setting and be in the furnace body top, graphite electrode follows the bell stretches into in the furnace body and by elevating gear control goes up and down and circular telegram, it has three electrode hole that is used for passing through graphite electrode to open on the bell.

2. The high-frequency graphite continuous aluminum melting furnace according to claim 1, characterized in that: the side wall of the melting cavity is provided with three feed inlets, and each feed inlet is over against the gap between the three graphite electrodes.

3. The high-frequency graphite continuous aluminum melting furnace according to claim 1, characterized in that: the bottom of the heat preservation cavity is in an inverted cone shape with a low middle and high periphery, a slag discharge port is arranged at the center of the bottom, and the liquid outlet is arranged at the bottom of the side wall.

4. The high-frequency graphite continuous aluminum melting furnace according to claim 1, characterized in that: and the side wall of the heat preservation cavity is provided with a heating device for keeping the temperature of the heat preservation cavity to maintain the molten aluminum in a liquid state.

5. The high-frequency graphite continuous aluminum melting furnace according to claim 1, characterized in that: the separation net is made of high-temperature-resistant materials, and a gap for molten aluminum to pass through is formed in the middle of the separation net.

6. The high-frequency graphite continuous aluminum melting furnace according to claim 5, characterized in that: and a smoke extraction device is arranged above the electrode hole, and smoke emitted from the electrode hole is extracted away through negative pressure.

7. The high-frequency graphite continuous aluminum melting furnace according to claim 6, characterized in that: the smoke extraction device comprises an annular smoke collecting cover arranged above the electrode hole, a smoke exhaust pipe connected with the annular smoke collecting cover, and a final tail gas filtering device of the smoke exhaust pipe, wherein an exhaust pump is arranged on the smoke exhaust pipe.