KR20050080655A - Nonferrous metals rapidity smelting furnace - Google Patents

Abstract

The present invention relates to a rapid melting furnace of aluminum and aluminum alloy for die casting and casting, etc., a new type of non-ferrous metal rapid melting furnace having excellent preheating effect, easy dissolution and discharging of molten metal and no burner closing phenomenon To provide.

Rapid melting furnace of the present invention is a tower portion having an ingot inlet is equipped with a door; A dissolving portion installed below the tower portion and having dissolving burners dissolving the ingot; It includes a holding portion that is continuously supplied with the molten melt from the melting portion; The melting burners are arranged in the melting part such that a flame is directed toward the center of the tower part.

Description

Nonferrous metals rapidity smelting furnace

The present invention relates to a non-ferrous metal rapid melting furnace for rapid dissolution of the aluminum and aluminum alloy melting furnace for die casting and casting, and improvement of the unit.

Recently, the demand for aluminum and aluminum alloy melting furnaces is gradually increasing due to the development of domestic and foreign automobile industry.

Currently, at home and abroad, the improvement of the melting furnace has been trying to increase the efficiency mainly by adopting the burner or the thermal insulation, but it is known that there is no great effect.

As generally mentioned, the existing aluminum and aluminum alloy melting furnaces are arranged such that the flame of the melting burner faces the side of the charge (aluminum ingot), so that the flame is dispersed. In addition, since the charge inlet is located in the lateral direction, not only a large amount of charge may not be input, but also a preheating effect is greatly reduced because heat flows out to the side (a phenomenon in which exhaust gas is blown to the side). (Thermal efficiency is very low, around 50%.)

Conventional melting furnaces tend to flow into the burner tile, so the incoming material is dissolved in the tile. Since it dissolves rapidly at a high temperature of 1200 degrees Celsius, it is oxidized and hardened in the tiles so that burner tiles are closed.

Due to these causes, burner tile cleaning has to be carried out, and thus the melting of the melting furnace is necessary.

In addition, the heat dissipation heat of the opening is further increased because the cleaning operation of the melt burner tile dry hearth has to be performed for a long time.

Workability due to burner tile cleaning

Melt burner: 2 people * 1 hour * 2 times = 4 hr / day

(every flux processing, in front of free fall section and burner tile to heat insulation room)

Tango Work: None

Melt removal work: 2 people * 1hr * 1 time = 2hr / day

SUMMARY OF THE INVENTION The present invention has been made to solve such a conventional problem, and an object thereof is to provide a new type of non-ferrous metal rapid melting furnace having excellent preheating effect, easy dissolution and discharging of the melt, and no burner closing phenomenon.

Rapid melting furnace of the non-ferrous metal of the present invention to achieve the above technical problem tower portion having an ingot inlet is mounted door; A dissolving portion installed below the tower portion and having dissolving burners dissolving the ingot; It includes a holding portion that is continuously supplied with the molten melt from the melting portion; The melting burners are arranged in the melting part such that a flame is directed toward the center of the tower part.

In the present embodiment, the tower portion exhaust port for discharging the exhaust gas at the top; Left and right waterways inclined downward to flow to the holding part after the molten metal melted by the melting burners flows to both sides; And a raised portion in which ingots introduced from the tower portion are stacked and raised higher than the water flow passage.

In the present embodiment, the melter further comprises a furnace burner for applying heat to each of the left and right waterways so that the molten metal respectively flowed down to the left and right waterways.

In the present embodiment, the melting portion further includes a cleaning door used to clean the inside of the melting portion.

In the present embodiment, the melting portion and the holding portion are separated from each other by a partition wall, but only the hot water passage portion, the holding portion holding burners for applying heat to the melt flows along the left and right water passages of the melting portion; The cleaning door may further include a cleaning door used to clean the inside of the holding part, and the holding burners are installed on the upper part of the holding part.

For example, the embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited by the embodiments described below. These examples are provided to more fully explain the present invention to those skilled in the art. Accordingly, the shape of the elements in the drawings and the like are exaggerated to emphasize a clearer description.

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 to 6. In addition, in the drawings, the same reference numerals are denoted together for components that perform the same function.

1 to 6, the non-ferrous metal rapid melting furnace 100 of the present invention is composed of a tower portion 110, the melting portion 120 and the holding portion 140 large.

As shown in FIG. 3, the holding part 140 is separated from the dissolving part 120 by the partition wall 150, and only two hot water flow portions in which the molten metal flows are opened (see FIG. 6). Two holding burners 142 are installed on the upper cover of the holding part 140. The holding burner 142 maintains the temperature of the molten metal by applying heat to the molten metal (a) flowing along the left and right molten metal of the melting part 120. The holding part 140 is provided with a cleaning door 144 used for cleaning the inside, similar to the melting part 120. And the hot water outlet 146 is provided on the opposite side of the cleaning door 144.

For example, the body of the tower unit 110, the dissolving unit 120 and the holding unit 140 is preferably made of a heat insulating material, for example, a ceramic heat insulating material.

The tower unit 110 is formed with an inlet 112 for charging the aluminum ingot (i) at the top, the inlet 112 is opened and closed by the charging door 114. In addition, an outlet 116 through which exhaust gas is discharged is formed at an upper side surface of the tower unit 110. The tower unit 110 is a portion in which the aluminum ingot i is preheated, and is installed directly above the dissolution unit 120. In addition, an inlet is provided at an upper portion so that the aluminum ingot i can be charged more.

The melting part 120 is installed below the tower part 110. The melting part 120 is provided with melting burners 122 for dissolving the aluminum ingot i. The dissolution unit 120 has a ridge 124 in which the aluminum ingot i injected from the tower unit 110 is stacked, and left and right of the ridges 124 are formed at left and right sides of the ridge 124. 125a and 125b are formed. The left and right furnaces 125a and 125b are formed to be inclined downward so that the molten metal melted by the melting burners 122 flows from both sides of the raised portion 124 and then flows to the holding unit 140. In particular, the melting burners 122 are installed on the upper part of the melting part 120, and the burner flame direction is installed to be concentrated at the center of the melting part 120 (that is, the ridge; 124) (FIG. 4). Reference). Due to the centralized structural features of the dissolution burner 122, not only the dissolution of the aluminum ingot (i) is uniform but also rapid dissolution is possible, there is little possibility that the molten metal flows into the burner tile in the structural Therefore, burner closing does not occur. In addition, the melt melted by the melting burners 122 flows straight from the ridge 124 to both sides to form left and right melt furnaces 125a and 125b formed at left and right edges of the bottom of the dissolving unit 120. Accordingly, by rapidly flowing to the holding unit 140, there is an advantage that the continuous dissolution and movement of the molten metal is possible, as well as almost no dissolved residue remains in the melting portion.

The combustion gas of the melting burner 122 becomes combustion exhaust gas while heating the aluminum ingot i, and the combustion exhaust gas rises to the tower unit 110 communicating with the melting unit 120. The combustion exhaust gas is heat-exchanged with the aluminum ingot (i) charged in the tower portion 110 to be effectively used as a preheating source, and then discharged through the outlet 116. Here, the present invention can be charged with a large amount of ingot by the top charging of the aluminum ingot, the heat flow (flow of combustion exhaust gas) is moved to the upper has the advantage of excellent preheating effect.

The aluminum ingot (i) is sequentially dissolved from the bottom located in the raised portion 124 of the melting portion 120. Since the aluminum ingot (i) is preheated by heat exchange with combustion exhaust gas in the tower part, it is possible to dissolve faster than when the aluminum ingot at room temperature is directly placed in the melting part and dissolved.

As shown in FIGS. 1, 2 and 4, the molten part 120 has the molten metal flowing down into the left and right waterways 125a and 125b to flow smoothly into the holding unit 140. Furnace burners 126 are provided to heat the melt flow direction of the 125a and 125b, and a cleaning door 128 for use when cleaning the inside of the melting part is connected to the left and right furnaces 125a and 125b. It is installed as possible.

On the other hand, the present invention non-ferrous metal rapid melting furnace 100 composed of the above configuration can be variously modified and can take various forms. It is to be understood, however, that the present invention is not limited to the specific forms referred to in the above description, but rather includes all modifications, equivalents and substitutions within the spirit and scope of the invention as defined by the appended claims. It should be understood to do.

In the above, the configuration and operation of the non-ferrous metal rapid melting furnace according to the present invention is shown in accordance with the above description and drawings, but this is just described for example, and various changes and modifications are possible within the scope without departing from the spirit of the present invention. Of course.

By applying the present invention, not only the dissolution of the aluminum ingot is made uniform, but also rapid dissolution is possible, and since burner closure is unlikely to occur due to the possibility that the molten metal flows into the burner tile. Another effect is that the melt melted by the melt burners flows straight from the ridge to both sides and quickly flows to the holding part along the left and right melt furnaces formed at the left and right edges of the bottom of the melt, thereby continuously dissolving and moving the melt. Not only this is possible, but there is an advantage that little dissolved residue remains in the melting portion.

1 is a front cross-sectional view of a non-ferrous metal rapid melting furnace according to a preferred embodiment of the present invention;

2 is a plan view of a non-ferrous metal rapid melting furnace according to a preferred embodiment of the present invention;

Figure 3 is a flat cross-sectional view showing the melting portion and the holding portion in the non-ferrous metal rapid melting furnace according to a preferred embodiment of the present invention;

Figure 4 is a side cross-sectional view showing the melting portion and the tower portion in the non-ferrous metal rapid melting furnace according to a preferred embodiment of the present invention;

5 is a cross-sectional view taken along the line A-A shown in FIG.

FIG. 6 is a cross-sectional view taken along the line B-B shown in FIG. 3.

* Explanation of symbols for the main parts of the drawings

110: tower part

112: inlet

114: charging door

120: melting part

122: melting burner

124: ridge

125a, 125b: Left and Right Bathway

140: holding part

142: holding burner

144: cleaning door

Claims (7)

In the rapid melting furnace of nonferrous metals: A tower unit having an ingot inlet in which a door is mounted; A dissolution unit installed below the tower unit and having dissolution burners dissolving ingots; It includes a holding portion that is continuously supplied with the molten melt from the melting portion; The melting burners are disposed in the melting portion to face the center of the tower portion non-ferrous metal rapid melting furnace, characterized in that the melting of the ingot is uniform. The method of claim 1, The tower portion Non-ferrous metal rapid melting furnace characterized in that it further comprises an outlet for exhaust gas is discharged at the top. The method of claim 1, The melting part Non-ferrous metal rapid melting furnace characterized in that the molten melted by the melting burner flows down to both sides and has a left and right water inclined downward to flow to the holding portion. The method of claim 3, The melting part Including ingots that are introduced from the tower portion is accumulated and raised bulge higher than the waterway, The ingot is a non-ferrous metal rapid melting furnace characterized in that the molten melted by the melting burner flows from the raised portion to both sides flows to the left and right waterways formed on the left and right edges of the bottom of the melted portion. The method of claim 3, The melting part Non-ferrous metal rapid melting furnace further comprises a furnace burner for applying heat to each of the left and right waterways so that the molten metal flowed into the left and right waterways respectively flows to the holding unit. The method of claim 3, The melting portion and the holding portion is separated from each other by a partition wall, but the non-ferrous metal rapid melting furnace, characterized in that only the hot water passage portion is open. The method of claim 3, The holding unit includes holding burners for applying heat to the molten metal flowing along the left and right waterways of the melting portion; Further comprising a cleaning door used to clean the inside of the holding portion; The holding burners are non-ferrous metal rapid melting furnace, characterized in that installed on the upper portion.