Novel durable tuyere of fuming furnace

Abstract

The utility model relates to a novel durable tuyere of a fuming furnace, which belongs to the technical field of thermometallurgy in the field of nonferrous metallurgy and comprises a first nozzle body, the right side of the first nozzle body is in threaded connection with a second nozzle body, and the right side of the second nozzle body is in threaded connection with a pulverized coal nozzle. The upper side of the first nozzle body is fixedly connected with a pulverized coal connector, the left side of the first nozzle body is in threaded connection with a pipe base, the upper side of the pipe base is in threaded connection with an air connector, and a wear-resisting assembly is arranged in the first nozzle body. The wear-resistant assembly comprises a body fixedly connected to the first nozzle. According to the novel durable tuyere of the fuming furnace, through the first nozzle body, the second nozzle body, the pulverized coal nozzle and the lining ceramic fixed in the pulverized coal connector, the erosive wear resistance of the inner wall can be effectively improved, and the stability under erosion of a mixture of compressed air and pulverized coal is improved.

Description

Technical Field

[0001] This utility model relates to the field of pyrometallurgical technology in the field of non-ferrous metallurgy, specifically to a new type of durable air nozzle for a fumigation furnace. Background Technology

[0002] Currently, in the lead smelting industry both domestically and internationally, the separation of lead and zinc in the final zinc-containing smelting slag is mostly achieved using a fuming furnace for reduction and recovery. A fuming furnace is a pyrometallurgical device that blows a mixture of air and pulverized coal into the molten slag, causing the valuable metals in the slag to volatilize in the form of metals, oxides, or sulfides. The main function of the fuming furnace's tuyeres is to blow compressed air and pulverized coal into the molten slag inside the furnace. The combustion of the pulverized coal generates heat and CO, maintaining the slag at a high temperature and reducing the compounds in the slag to elemental forms, which then sublimate. These elements are then re-oxidized into oxides upon encountering CO2 or the drawn-in air in the flue, and finally collected as dust, achieving the purpose of refining and enriching valuable metals.

[0003] Due to the high-speed scouring of compressed air and pulverized coal, the air nozzles suffer from severe local wear, affecting their service life. Frequent replacement of air nozzles reduces the production efficiency of the fuming furnace and increases production costs. Therefore, a new type of durable air nozzle for fuming furnaces is proposed to solve the problems mentioned above. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a new type of durable air nozzle for fuming furnaces, which has advantages such as reducing air nozzle maintenance costs and improving the production efficiency of fuming furnaces. It solves the problem that the air nozzle is subject to severe local wear due to high-speed scouring by compressed gas and pulverized coal, which affects the service life of the air nozzle. Frequent replacement of air nozzles affects the production efficiency of fuming furnaces and increases production costs.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel durable air nozzle for a fuming furnace, comprising a first nozzle body, a second nozzle body threadedly connected to the right side of the first nozzle body, a pulverized coal nozzle threadedly connected to the right side of the second nozzle body, a pulverized coal connector fixedly connected to the upper side of the first nozzle body, a pipe seat threadedly connected to the left side of the first nozzle body, an air connector threadedly connected to the upper side of the pipe seat, and a wear-resistant component provided inside the first nozzle body.

[0006] The wear-resistant component includes an inner ceramic lining that is fixedly connected to the inner walls of the first nozzle body, the second nozzle body, the pulverized coal nozzle, and the pulverized coal connector.

[0007] Furthermore, the first nozzle body is fixedly connected to the pipe seat by bolts, and the first nozzle body is connected to the second nozzle body by bolts.

[0008] Furthermore, the second nozzle body and the pulverized coal nozzle are fixedly connected by bolts, and the pulverized coal connector is vertically fixed on the upper side of the first nozzle body.

[0009] Furthermore, the inner wall of the air connector is connected to the upper side of the pipe seat, and the lower side of the pulverized coal connector is connected to the upper side of the first nozzle body.

[0010] Furthermore, the tube seat, the first nozzle body, the second nozzle body, the pulverized coal nozzle, the air connector, and the pulverized coal connector are all made of stainless steel.

[0011] Furthermore, the inner wall of the pulverized coal nozzle is fixedly connected to the outer side of the inner ceramic lining.

[0012] Furthermore, two flanges are fixedly connected to the sides of the second nozzle body, and the left side of the second nozzle body is threadedly connected to the right side of the first nozzle body.

[0013] Furthermore, the right side of the second nozzle body is threadedly connected to the left side of the pulverized coal nozzle.

[0014] Compared with the prior art, this utility model provides a new type of durable air nozzle for fumigation furnaces, which has the following beneficial effects:

[0015] 1. The durable air nozzle of this new type of fuming furnace effectively improves the erosion and wear resistance of the inner wall by fixing the inner ceramic lining inside the first nozzle body, the second nozzle body, the pulverized coal nozzle and the pulverized coal connector, and enhances the stability under the erosion of compressed air and pulverized coal mixture.

[0016] 2. The new type of durable air nozzle for the fuming furnace is made of stainless steel, which ensures that the tube seat, the first nozzle body, the second nozzle body, the pulverized coal nozzle, the air connector, and the pulverized coal connector have good resistance to oxidation, corrosion, acid and alkali, and high temperature. This solves the problem that the air nozzle is subject to high-speed erosion by compressed air and pulverized coal, which causes severe local wear and affects the service life of the air nozzle. Frequent replacement of the air nozzle affects the production efficiency of the fuming furnace and increases production costs. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of this utility model;

[0019] Figure 3 This is a three-dimensional cross-sectional view of the pulverized coal nozzle of this utility model.

[0020] In the diagram: 1 Stainless steel, 2 Ceramic lining, 3 Pipe seat, 4 First nozzle body, 5 Second nozzle body, 6 Pulverized coal nozzle, 7 Air connector, 8 Pulverized coal connector. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1:

[0023] Please see Figures 1 to 3 This embodiment discloses a novel durable air nozzle for a fuming furnace, comprising a first nozzle body 4, a second nozzle body 5 threadedly connected to the right side of the first nozzle body 4, a pulverized coal nozzle 6 threadedly connected to the right side of the second nozzle body 5, a pulverized coal connector 8 fixedly connected to the upper side of the first nozzle body 4, a pipe seat 3 threadedly connected to the left side of the first nozzle body 4, and an air connector 7 threadedly connected to the upper side of the pipe seat 3. A wear-resistant component is disposed inside the first nozzle body 4. The wear-resistant component includes an inner ceramic lining 2 fixedly connected to the inner walls of the first nozzle body 4, the second nozzle body 5, the pulverized coal nozzle 6, and the pulverized coal connector 8.

[0024] The first nozzle body 4 is fixedly connected to the pipe seat 3 by bolts, the first nozzle body 4 is fixedly connected to the second nozzle body 5 by bolts, the second nozzle body 5 is fixedly connected to the pulverized coal nozzle 6 by bolts, the pulverized coal connector 8 is vertically fixed on the upper side of the first nozzle body 4, the inner wall of the air connector 7 is connected to the upper side of the pipe seat 3, and the lower side of the pulverized coal connector 8 is connected to the upper side of the first nozzle body 4. The pipe seat 3, the first nozzle body 4, the second nozzle body 5, the pulverized coal nozzle 6, the air connector 7 and the pulverized coal connector 8 are all made of stainless steel 1. The inner wall of part of the pulverized coal nozzle 6 is fixedly connected to the outer side of the inner ceramic lining 2.

[0025] It should be noted that the original air nozzle was made of Q235 carbon steel plate, and its wear resistance could not meet the requirements of the scouring of the compressed air and pulverized coal mixture. After about a month of use in production, it wore through and was replaced with a new material, stainless steel 1. Stainless steel 1 is specifically made of 2Cr25Ni20 stainless steel, which is an iron-carbon alloy and belongs to austenitic stainless steel. Because of its high chromium and nickel content, it has good oxidation resistance, corrosion resistance, acid and alkali resistance, and high temperature resistance. The pulverized coal nozzle 6 is not fully lined with ceramic 2 because the pulverized coal nozzle 6 is inserted into the fuming furnace and subjected to high temperature, and the inner ceramic lining 2 is prone to falling off and being damaged.

[0026] Example 2:

[0027] Please see Figures 1 to 2Based on Embodiment 1, two flanges are fixedly connected to the sides of the second nozzle body 5. The left side of the second nozzle body 5 is threadedly connected to the right side of the first nozzle body 4, and the right side of the second nozzle body 5 is threadedly connected to the left side of the pulverized coal nozzle 6.

[0028] By adopting the above technical solution, the flange on the side of the second nozzle body 5 is fixed to the first nozzle body 4 and the pulverized coal nozzle 6.

[0029] The working principle of the above embodiments is as follows:

[0030] The tube seat 3, the first nozzle body 4, the second nozzle body 5, and the pulverized coal nozzle 6 are fixed together with bolts. The end of the pulverized coal nozzle 6 away from the second nozzle body 5 is inserted into the fuming furnace. The second nozzle body 5, the first nozzle body 4, the pulverized coal connector 8, and the pulverized coal nozzle 6 are all fixed with ceramic liners 2 to ensure the stability of the nozzle under the scouring of compressed air and pulverized coal mixture. However, the pulverized coal nozzle 6 is not completely fixed with ceramic liners 2 because the high temperature inside the fuming furnace is transferred to the inside of the pulverized coal nozzle 6, and the ceramic liners 2 are prone to falling off and being damaged. During the operation of the nozzle, the use of stainless steel 1 improves the oxidation resistance, high temperature strength, and good heat resistance of the nozzle surface and interior, effectively extending the service life of the nozzle and reducing the maintenance cost of the nozzle.

[0031] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods, and any method that can achieve its beneficial effects can be implemented.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel durable air nozzle for a fumigation furnace, characterized in that: The first nozzle body (4) is included. A second nozzle body (5) is threadedly connected to the right side of the first nozzle body (4). A pulverized coal nozzle (6) is threadedly connected to the right side of the second nozzle body (5). A pulverized coal connector (8) is fixedly connected to the upper side of the first nozzle body (4). A pipe seat (3) is threadedly connected to the left side of the first nozzle body (4). An air connector (7) is threadedly connected to the upper side of the pipe seat (3). A wear-resistant component is provided inside the first nozzle body (4). The wear-resistant component includes an inner ceramic lining (2) that is fixedly connected to the inner walls of the first nozzle body (4), the second nozzle body (5), the pulverized coal nozzle (6), and the pulverized coal connector (8).

2. The novel durable air nozzle for a fumigation furnace according to claim 1, characterized in that: The first nozzle body (4) is fixedly connected to the tube seat (3) by bolts, and the first nozzle body (4) is connected to the second nozzle body (5) by bolts.

3. The novel durable air nozzle for a fumigation furnace according to claim 1, characterized in that: The second nozzle body (5) is fixedly connected to the pulverized coal nozzle (6) by bolts, and the pulverized coal connector (8) is vertically fixed on the upper side of the first nozzle body (4).

4. The novel durable air nozzle for a fumigation furnace according to claim 1, characterized in that: The inner wall of the air connector (7) is connected to the upper side of the pipe seat (3), and the lower side of the pulverized coal connector (8) is connected to the upper side of the first nozzle body (4).

5. The novel durable air nozzle for a fumigation furnace according to claim 1, characterized in that: The tube seat (3), the first nozzle body (4), the second nozzle body (5), the pulverized coal nozzle (6), the air connector (7), and the pulverized coal connector (8) are all made of stainless steel (1).

6. The novel durable air nozzle for a fumigation furnace according to claim 1, characterized in that: The inner wall of the pulverized coal nozzle (6) is fixedly connected to the outer side of the inner ceramic lining (2).

7. The novel durable air nozzle for a fumigation furnace according to claim 1, characterized in that: Two flanges are fixedly connected to the sides of the second nozzle body (5), and the left side of the second nozzle body (5) is threadedly connected to the right side of the first nozzle body (4).

8. The novel durable air nozzle for a fumigation furnace according to claim 7, characterized in that: The right side of the second nozzle body (5) is threadedly connected to the left side of the pulverized coal nozzle (6).

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