Novel chute for intermediate frequency furnace casting

Abstract

The utility model belongs to the technical field of precious metal Kaldo furnace copper anode slime smelting devices, and particularly relates to a novel chute for intermediate frequency furnace casting, which comprises a chute body, a high-temperature-resistant casting layer built on the inner wall of the chute body and an anti-sticking coating coated on the inner wall of the high-temperature-resistant casting layer. The end part of the material protecting section is not shielded; an end plate is arranged at the end of the material blocking section, the height of the side wall of the material blocking section is larger than that of the side wall of the material protecting section, and due to the fact that the side wall of the material blocking section is high and a baffle is arranged at the end of the material blocking section, it can be guaranteed that melt poured out of the intermediate frequency furnace cannot be spilled out. As the side wall of the material protecting section is lower and no baffle is arranged at the end part, the melt cannot be hindered in the dumping process. Due to the fact that the anti-sticking coating is coated inside the high-temperature-resistant layer, no sticking substance is left in the chute after pouring is completed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of precious metal kaldor furnace copper anode slime smelting device, and specifically relates to a novel chute for medium-frequency furnace casting. BACKGROUND

[0002] The smelting of precious metals such as gold and silver from copper anode slime usually adopts the process technology of "pressure leaching + kaldor furnace", copper anode slime is first subjected to pressure leaching with sulfuric acid to remove copper, tellurium and other impurities in the copper anode slime, and then the material is added into the kaldor furnace for reduction smelting and oxidation blowing, and after smelting, qualified dor alloy is produced, the dor alloy is transferred into a high-frequency medium-frequency furnace, heated, and then poured into a mold through a pouring chute, and after cooling, a silver anode plate is obtained.

[0003] The pouring chute is used for transferring the melt between the high-frequency medium-frequency furnace and the pouring mold, and the pouring chute needs to be smooth on the surface and resistant to 900-1200 DEG C during operation. At present, most production enterprises use refractory furnace bricks to make the pouring chute. However, in the smelting process of the copper anode slime, due to the influence of the specific gravity and chemical properties of silver, the erosion of the silver melt on the refractory furnace bricks is relatively serious, and after the pouring chute made of the refractory bricks is used for a period of time, the bricks are prone to burst, crack and stick with materials, and the average service life is only 2-3 months. Moreover, gold and silver are high-value metals, and the sticking of silver makes the loss of precious metals, reduces the metal recovery rate, and increases the production cost. In addition, the sticking of silver on the pouring chute with lining bricks makes the cleaning operation of the pouring chute difficult and increases the labor intensity of the post personnel. CONTENT OF THE UTILITY MODEL

[0004] In view of the problems in the prior art, the utility model provides a novel chute for medium-frequency furnace casting, and the utility model specifically includes the following contents:

[0005] A novel chute for medium-frequency furnace casting, comprising a chute body, a high-temperature-resistant pouring layer and an anti-sticking coating.

[0006] The chute body comprises a material protection section and a material blocking section, the end of the material protection section is not shielded, the end of the material blocking section is provided with an end plate, and the height of the sidewall of the material blocking section is higher than that of the material protection section.

[0007] The high-temperature-resistant pouring layer is a high-temperature-resistant layer formed by pouring heavy-burned plate-shaped spinel refractory, graphite castable and / or silicon carbide castable on the inner wall of the chute body.

[0008] The anti-sticking coating is arranged on the inner side of the high-temperature-resistant pouring layer.

[0009] Further, the thickness of the high-temperature-resistant pouring layer is greater than or equal to 10 cm.

[0010] Further, the thickness of the anti-sticking coating is greater than or equal to 5 mm.

[0011] Further, the height of the side wall of the material blocking section is 1.2-2 times the height of the side wall of the material protecting section.

[0012] Further, the trough body is made of stainless steel.

[0013] Further, the thickness of the wall of the trough body is greater than or equal to 1 cm.

[0014] Further, two fixing ears are arranged on both sides of the bottom of the trough body.

[0015] Further, the fixing ears are arranged on both sides of the bottom of the trough body at the intersection of the material protecting section and the material blocking section.

[0016] The utility model discloses a novel trough for medium frequency furnace casting has the advantages of the following:

[0017] The utility model discloses a novel trough for medium frequency furnace casting, including the trough body, the high temperature resistant casting layer that builds on the inner wall of trough body and the anti -sticking coating that coats on the inner wall of high temperature resistant casting layer, the trough body includes the material protecting section and the material blocking section, the end of material protecting section is not sheltered, the end of material blocking section sets up end plate, the height of material blocking section side wall is higher than the height of material protecting section side wall. Use this device, every time cast, the silver melt in medium frequency furnace is filled to the material blocking section on the trough first, then follows the trough bottom and flows to the material protecting section, then pours into the casting machine mould again, because the side wall of material blocking section is higher and sets up the baffle at the end, can guarantee that the melt that pours out from medium frequency furnace does not spill, because the side wall of material protecting section is lower and the end is not baffle, therefore will not hinder melt in the process of pouring. Because the high temperature resistant layer is coated with anti -sticking coating in, therefore, after pouring, there is no bonding material left in the trough. In addition, the heavy burning plate shaped spinel quality high temperature resistant casting layer used in the utility model can resist high temperature, and is not easy to have high temperature brittle fracture and other damages, and the service life of the whole device is longer. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structural schematic diagram of the device disclosed by the utility model. CONCRETE IMPLEMENTATION

[0019] The utility model will be explained in detail in combination with the drawings and concrete implementation. The example shown below does not have any limiting effect on the utility model content recorded in the claim. In addition, the constitution represented in the following example is not limited to the solution necessary for the utility model recorded in the claim.

[0020] Reference is made to the drawings Figure 1A novel chute for casting in a medium-frequency furnace includes a chute body 1, a high-temperature resistant casting layer 5, and an anti-sticking coating 6. The chute body 1 includes a material protection section 2 and a material blocking section 3, the end of which is unobstructed. The end of the material blocking section 3 is provided with an end plate, and the height of the sidewall of the material blocking section 3 is higher than the height of the sidewall of the material protection section 2. The high-temperature resistant casting layer 5 is a high-temperature resistant layer formed by casting reheated plate-shaped spinel high-temperature resistant castable, graphite castable, and / or silicon carbide castable onto the inner wall of the chute body 1. The anti-sticking coating 6 is disposed on the inner side of the high-temperature resistant casting layer 5.

[0021] In some embodiments of this utility model, the thickness of the high-temperature resistant casting layer 5 is ≥10cm.

[0022] In some embodiments of this utility model, the thickness of the anti-stick coating 6 is ≥5mm.

[0023] In some embodiments of this utility model, the height of the side wall of the retaining section 3 is 1.2-2 times the height of the side wall of the protective section 2. By reasonably setting the height difference between the protective section 2 and the retaining section 3, better material blocking and tilting effects can be ensured.

[0024] In some embodiments of this utility model, the tank body 1 is made of stainless steel.

[0025] In some embodiments of this utility model, the thickness of the wall of the groove body 1 is ≥1cm.

[0026] In some embodiments of this utility model, two fixing ears 4 are also included, which are respectively disposed on both sides of the bottom of the groove body 1.

[0027] In some embodiments of this utility model, the fixing ears 4 are disposed on both sides of the bottom of the trough body 1 at the intersection of the material protection section 2 and the material blocking section 3. The function of the fixing ears 4 is to connect the chute to the medium-frequency furnace.

[0028] This utility model discloses a novel chute for casting in a medium-frequency furnace, comprising a chute body 1, a high-temperature resistant casting layer 5 built on the inner wall of the chute body 1, and an anti-stick coating 6 coated on the inner wall of the high-temperature resistant casting layer 5. The chute body 1 includes a material protection section 2 and a material blocking section 3. The end of the material protection section 2 is unobstructed; the end of the material blocking section 3 is provided with an end plate, and the height of the side wall of the material blocking section 3 is higher than the height of the side wall of the material protection section 2. Using this device, each time casting, the molten silver in the medium-frequency furnace is first filled into the material blocking section 3 on the chute, then flows down the bottom of the chute to the material protection section 2, and then is poured into the casting mold. Because the side wall of the material blocking section 3 is high and the end is provided with a baffle, it can be ensured that the molten metal poured out of the medium-frequency furnace will not spill; because the side wall of the material protection section 2 is low and the end is not provided with a baffle, it will not obstruct the molten metal during the pouring process. Because the high-temperature resistant layer is coated with an anti-stick coating 6, there is no adhesive residue in the chute after pouring. In addition, the high-temperature resistant casting layer 5 of the reheated plate-shaped spinel used in this invention can withstand high temperatures and is not prone to damage such as high-temperature brittle cracking, resulting in a longer service life for the entire device.

[0029] In the description of this application, it should be noted that the terms "inner" and "outer" are used for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0030] Unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A novel chute for casting in a medium-frequency furnace, characterized in that, It includes the tank body, a high-temperature resistant casting layer, an anti-stick coating, and two fixing ears; The tank body includes a material protection section and a material blocking section. The end of the material protection section is not obstructed. An end plate is provided at the end of the material blocking section. The height of the side wall of the material blocking section is 1.2-2 times the height of the side wall of the material protection section. The high-temperature resistant casting layer is formed by casting reheated plate-shaped spinel high-temperature resistant castable, graphite castable, and / or silicon carbide castable onto the inner wall of the tank body. The anti-stick coating is disposed on the inner side of the high-temperature resistant casting layer; The two fixing ears are respectively located on both sides of the bottom of the tank body at the intersection of the material protection section and the material blocking section.

2. The novel chute for casting in a medium-frequency furnace according to claim 1, characterized in that, The thickness of the high-temperature resistant casting layer is ≥10cm.

3. A novel chute for casting in a medium-frequency furnace according to claim 1, characterized in that, The thickness of the anti-stick coating is ≥5mm.

4. A novel chute for casting in a medium-frequency furnace according to claim 1, characterized in that, The thickness of the tank body wall is ≥1cm.

5. The novel chute for medium-frequency furnace casting according to any one of claims 1-4, characterized in that, The tank body is made of stainless steel.

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