High-strength high-thermal-conductivity copper-steel composite cooling water jacket for oxygen-enriched closed furnace

Abstract

The utility model discloses a high-strength high-thermal conductivity copper steel composite cooling water jacket for an oxygen-enriched closed furnace, which comprises a first side plate, a second side plate, a third side plate and a fourth side plate which are connected with one another, and cooling water channels are respectively preset in the first side plate, the second side plate, the third side plate and the fourth side plate; the two ends of the cooling water channel are connected with a water inlet and a water outlet correspondingly, and the first side plate, the second side plate, the third side plate and the fourth side plate are provided with fixing lugs correspondingly and are connected through the fixing lugs and bolts. The first side plate, the second side plate, the third side plate and the fourth side plate are respectively formed by compounding an inner-layer copper base layer and an outer-layer steel base layer which face the furnace body, and oxygen-enriched air ports are respectively formed in the lower parts of the second side plate and the third side plate. The high-strength and high-heat-conduction copper-steel composite cooling water jacket of the oxygen-enriched closed furnace solves the technical problems that a traditional water jacket is short in service life and poor in stability.

Description

Technical Field

[0001] This utility model relates to the field of cooling water jacket technology, specifically a high-strength, high-thermal-conductivity copper-steel composite cooling water jacket for an oxygen-enriched sealed furnace. Background Technology

[0002] In today's industrial production, oxygen-enriched closed furnaces are an important smelting equipment. Traditional copper-nickel ore smelting processes mainly employ closed blast furnaces, which are considered traditional processes with high energy consumption, limited processing capacity, low SO2 concentration in flue gas, and difficulties in acid collection and production. These methods are no longer suitable for the new demands of energy conservation, environmental protection, and large-scale production. Oxygen enrichment in closed blast furnace smelting is an improvement on this traditional process. Oxygen enrichment methods include top-blowing, side-blowing, and bottom-blowing. Copper-nickel ore oxygen-enriched closed furnace smelting uses side-blowing technology, where oxygen-enriched air is blown into the slag layer from the primary air inlets on both sides of the furnace, creating intense agitation and tumbling. This intense agitation provides conditions for the rapid and uniform distribution of materials in the melt, resulting in high-rate chemical reactions. However, the short lifespan of traditional furnace cooling systems affects the normal operation of the equipment. Therefore, extending the service life of oxygen-enriched closed furnaces has become a key issue.

[0003] Oxygen-enriched closed furnaces operate in high-temperature, high-pressure, and highly corrosive environments. The furnace water jacket, as a key component of the cooling system, endures immense thermal stress and chemical corrosion. Traditional water jacket materials are insufficient to meet the requirements for long-term stable operation. Frequent maintenance and replacement not only increase production costs but also severely impact the continuity and stability of production.

[0004] Copper possesses excellent thermal conductivity and corrosion resistance; however, pure copper has relatively low strength and wear resistance, making it difficult to withstand complex operating conditions when used alone. Heat-resistant steel, on the other hand, has high strength and hardness, but its thermal conductivity and corrosion resistance are inferior to copper. Therefore, combining copper and steel to fully utilize their respective advantages and fabricating an integrated copper-steel composite water jacket with tuyeres holds promise for solving the lifespan issue of oxygen-enriched sealed furnace bodies. Utility Model Content

[0005] The purpose of this invention is to provide a high-strength, high-thermal-conductivity copper-steel composite cooling water jacket for an oxygen-enriched sealed furnace, solving the technical problems of short lifespan and poor stability of traditional water jackets.

[0006] To achieve the above objectives, this utility model provides the following technical solution: It includes a first side plate, a second side plate, a third side plate, and a fourth side plate connected together. Cooling water channels are pre-set within each of the first, second, third, and fourth side plates. Inlet and outlet ports are connected to both ends of each cooling water channel. Fixing ears are provided on each of the first, second, third, and fourth side plates, and they are connected by bolts. Each of the first, second, third, and fourth side plates is composed of an inner copper base layer and an outer steel base layer facing the furnace body. Cooling water channels are pre-carved into the inner copper base layer, and the outer steel base layer is covered using an explosion process to combine the inner copper base layer and the outer steel base layer. The cooling water channels can be configured in different ways according to actual needs. Oxygen-enriched air vents are respectively provided in the lower parts of the second and third side plates.

[0007] Furthermore, square reinforcing ribs are provided on the outer sides of the first, second, third, and fourth side plates to reduce structural weight and enhance structural strength.

[0008] Furthermore, flanges are installed on the inlet and outlet.

[0009] Furthermore, the inner sides of the first, second, third, and fourth side plates are respectively provided with slag-hanging dovetail grooves to facilitate slag hanging.

[0010] Furthermore, the first side plate, the second side plate, the third side plate, and the fourth side plate are each at least one piece and cooperate with each other, and can be reasonably set according to the actual size of the furnace body.

[0011] Compared with the prior art, the advantages of this utility model are: the use of multiple side plates makes it easy to disassemble and maintain; each side plate is made of an inner copper base layer and an outer steel base layer composite, which has good thermal conductivity, corrosion resistance, strength and hardness, thus improving the service life and stability of the water jacket. Attached Figure Description

[0012] Figure 1 This is a perspective view of the present utility model;

[0013] Figure 2 This is a front view of the second side of the present invention;

[0014] Figure 3 This is a front view of the first side of the present invention;

[0015] Figure 4 This is a cross-sectional view of the composite layer of the first side plate, second side plate, third side plate and fourth side plate of this utility model. Detailed Implementation

[0016] 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.

[0017] Please see Figure 1-4 This utility model provides a technical solution for a high-strength, high-thermal-conductivity copper-steel composite cooling water jacket for an oxygen-enriched sealed furnace: It includes a first side plate 1, a second side plate 2, a third side plate 3, and a fourth side plate 4 connected together. Cooling water channels 14 are pre-set within each of the first side plate 1, second side plate 2, third side plate 3, and fourth side plate 4. Each cooling water channel 14 is connected to an inlet 5 and an outlet 6 at both ends. The cooling water channel 14, along with the inlet 5 and outlet 6, forms a single, integral pipe, manufactured using pre-casting. The first side plate 1, second side plate 2, third side plate 3, and fourth side plate 4... The side plate 3 and the fourth side plate 4 are respectively provided with fixing ears 7 and are connected by bolts through fixing ears 7. The connection between the second side plate, the third side plate and the fourth side plate is provided with bolts or steel columns are inserted at the connection and then fixed by fixing ears. The first side plate 1, the second side plate 2, the third side plate 3 and the fourth side plate 4 are respectively composed of an inner copper base layer 8 and an outer steel base layer 9 facing the furnace body. The inner copper base layer 8 and the outer steel base layer 9 are composite formed. The lower part of the second side plate 2 and the third side plate 3 are respectively provided with oxygen-enriched air vents 10.

[0018] Square reinforcing ribs 11 are respectively provided on the outer sides of the first side plate 1, the second side plate 2, the third side plate 3 and the fourth side plate 4 to reduce the structural weight and enhance the structural strength.

[0019] Flanges 12 are installed on inlet 5 and outlet 6. Whether or not flanges are installed on inlet 5 and outlet 6 depends on actual needs.

[0020] The inner sides of the first side plate 1, the second side plate 2, the third side plate 3, and the fourth side plate 4 are respectively provided with slag-hanging dovetail grooves 13 to facilitate slag hanging.

[0021] The first side plate 1, the second side plate 2, the third side plate 3, and the fourth side plate 4 are each at least one piece and cooperate with each other, and can be reasonably set according to the actual size of the furnace body.

[0022] Working principle: Bolts are used to fix and splice each side plate through fixing ears, and the inlet and outlet flanges are connected to allow cooling water to be introduced into the preset cooling water channel for circulating cooling to cool the furnace body.

[0023] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-strength high-thermal-conductivity copper-steel composite cooling jacket for an oxygen-enriched closed furnace, characterized by: The utility model relates to a cooling water channel of a furnace body, including connected first side plate (1), second side plate (2), third side plate (3) and fourth side plate (4), first side plate (1), second side plate (2), third side plate (3) and fourth side plate (4) are respectively preset with cooling water channel (14), and the both ends of cooling water channel (14) are connected with water inlet (5) and water outlet (6) respectively, and the fixed lug (7) is set up on first side plate (1), second side plate (2), third side plate (3) and fourth side plate (4) respectively and is connected with bolt through fixed lug (7), and first side plate (1), second side plate (2), third side plate (3) and fourth side plate (4) are respectively composed of the inner layer copper base layer (8) facing the furnace body and outer layer steel base layer (9), and the lower part of second side plate (2) and third side plate (3) is respectively provided with oxygen-enriched air port (10).

2. The cooling jacket of claim 1, wherein: The outer side of first side plate (1), second side plate (2), third side plate (3) and fourth side plate (4) is respectively provided with a square lattice type reinforcing rib (11).

3. The cooling jacket of claim 1, wherein: The water inlet (5) and the water outlet (6) are provided with flanges (12).

4. The cooling jacket of claim 1, wherein: The inner side of first side plate (1), second side plate (2), third side plate (3) and fourth side plate (4) is respectively provided with a slag hanging dovetail groove (13).

5. The cooling jacket of claim 1, wherein: First side plate (1), second side plate (2), third side plate (3) and fourth side plate (4) are at least one piece and cooperate with each other.

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