Submerged arc furnace bottom cooling device
By designing a circular wind box and flow guiding components, the problem of uneven cooling at the bottom of the submerged arc furnace was solved, achieving uniform cooling and high-temperature heat recovery and utilization, thus improving the cooling effect and saving resources.
Patent Information
- Application Number
- CN202520350611.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-03-20
- Estimated Expiration
- 2035-02-28
AI Technical Summary
Uneven cooling of the furnace bottom in electric arc furnaces leads to localized high temperatures, and the high-temperature heat flow after heat exchange cannot be effectively recovered and utilized, resulting in resource waste.
The design employs a circular air box and airflow guiding components, which evenly distributes cold air to the fan-shaped cooling channel. Combined with the annular heat flow channel, it recovers high-temperature airflow, achieving uniform cooling and resource reuse.
It achieves uniform cooling of the furnace bottom of the electric arc furnace, improves the cooling effect, and recovers and utilizes high-temperature heat flow, thus avoiding resource waste.
Smart Images
Figure CN224018825U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of ore heating furnace, especially relates to a ore heating furnace bottom cooling device. BACKGROUND
[0002] Ore heating furnace is also called arc furnace or resistance furnace. It is mainly used for reducing smelting ore, carbonaceous reducing agent and solvent and other raw materials. It is mainly used for producing ferrosilicon, manganese iron, chromium iron, tungsten iron, silicon manganese alloy and other ferroalloy, and is important industrial raw material in metallurgical industry and chemical raw material such as calcium carbide.
[0003] When ore heating furnace is used, the high-temperature furnace bottom needs to be cooled, and the furnace bottom is cooled by water cooling or air cooling in the prior art. Since the investment and land occupation of water cooling are large, air cooling is more commonly used. Air cooling is to blow the external cold air output by the fan to the furnace bottom, so that the cooling effect is directly achieved. However, in the actual use process, since the airflow flows from one end of the furnace bottom to the other end, and the furnace bottom is not provided with a device for uniformly diffusing the cold air, the cold airflow cannot be uniformly cooled after entering the furnace bottom, local high temperature of the furnace bottom still occurs, the overall cooling effect of the furnace bottom is poor, the normal and safe use of the ore heating furnace is affected, and at the same time, the high-temperature flow generated after heat exchange cannot be recycled in time, further causing waste of resources. SUMMARY
[0004] The utility model aims at providing a ore heating furnace bottom cooling device, and overcomes the above prior art's insufficient, effectively solve the existing problem that ore heating furnace bottom is not uniformly cooled.
[0005] The utility model discloses a ore heating furnace bottom cooling device, including circular base, the coaxial installation of circular wind box is arranged on the circular base, the even installation of a plurality of baffle is outwardly arranged on the circumference of the circular wind box, the fan-shaped cooling channel is formed between the adjacent two baffle, the flow guide assembly is arranged in the fan-shaped cooling channel, the air port that is linked with the fan-shaped cooling channel is seted up on the circumference of the circular wind box, the bottom wall of the circular wind box is linked with the preburied air pipe, and the outer end of the preburied air pipe is linked with the fan.
[0006] Further, the flow guide assembly includes an arc-shaped flow guide plate, a plurality of arc-shaped flow guide plates are evenly installed on the support arm, the outer end of the support arm is fixedly connected with the inner circumference of the circular base, and the inner arc surface of the arc-shaped flow guide plate faces the air port.
[0007] Further, the length of the plurality of arc-shaped flow guide plates increases from inside to outside.
[0008] Further, a circular enclosure is coaxially sleeved on the circular base, an annular heat flow passage is formed between the circumferential surface of the circular base and the circular enclosure, an air outlet is formed on the circumferential surface of the circular base, the fan-shaped cooling passage and the annular heat flow passage are communicated through the air outlet, and a heat flow conveying pipeline is communicated with the circular enclosure.
[0009] The present application has the advantages that: the circular wind box can blow the cold air introduced from outside to the fan-shaped cooling passage uniformly and radially outward from the center of the circular base, so that the bottom of the electric arc furnace is uniformly cooled, the local high temperature phenomenon of the bottom of the electric arc furnace is avoided, the overall effect of air cooling is improved, and the high temperature gas generated after heat exchange is collected and recycled through the annular heat flow passage, so that resource waste is avoided. BRIEF DESCRIPTION OF DRAWINGS
[0010] Fig. 1 It is a partial sectional view of the overall structure of the present application;
[0011] Fig. 2 It is a partial sectional view of the cooling device in the present application;
[0012] In the drawing, 1 is a circular base, 2 is a circular wind box, 3 is a partition, 4 is an air inlet, 5 is a pre-buried air pipe, 6 is a fan, 7 is an arc-shaped flow guide plate, 8 is a support arm, 9 is a circular enclosure, 10 is an air outlet, 11 is a heat flow conveying pipeline, and 12 is an electric arc furnace. DETAILED DESCRIPTION
[0013] In order to have a clearer understanding of the technical features, purposes and effects of the present application, the specific embodiments of the present application will be described with reference to the drawings:
[0014] For example, Figs. 1-2As shown, a kind of ore-heating furnace bottom cooling device, including circular base 1, the circular base 1 is coaxially installed with circular wind box 2, several partitions 3 are uniformly installed on the circumference of the circular wind box 2 radially outward, the fan-shaped cooling passage is formed between adjacent two partitions 3, flow guide assembly is arranged in the fan-shaped cooling passage, the circumference of the circular wind box 2 is provided with air port 4 with the fan-shaped cooling passage is connected, the bottom wall of the circular wind box 2 is connected with embedded air pipe 5, the outer end of the embedded air pipe 5 is connected with fan 6, the flow guide assembly includes arc flow guide plate 7, several arc flow guide plates 7 are uniformly installed on support arm 8, the outer end of the support arm 8 is fixedly connected with the inner circumference of the circular base 1, the inner arc surface of the arc flow guide plate 7 faces the air port 4, the length of several arc flow guide plates 7 gradually increases from inside to outside, circular enclosure 9 is coaxially sleeved on the circular base 1, annular hot flow passage is formed between the circumference of the circular base 1 and the circular enclosure 9, exhaust port 10 is formed in the circumference of the circular base 1, the fan-shaped cooling passage and the annular hot flow passage are connected by the exhaust port 10, and hot flow conveying pipeline 11 is communicated on the circular enclosure 9.
[0015] Specifically, the cold air introduced from outside can be blown to the fan-shaped cooling passage radially outward and uniformly by taking the circular base as center by the circular wind box 2, so that the furnace bottom is uniformly cooled in a directional manner.
[0016] In actual use, fan 6 inputs the cold air from outside into the circular wind box 2 through embedded air pipe 5, the cold air is blown into the corresponding fan-shaped cooling passage uniformly through air port 4, at this time, the input cold air flows radially outward and directionally taking the circular base as center, and the furnace bottom of ore-heating furnace 12 arranged above is uniformly cooled, in this process, the arc flow guide plates 7 uniformly installed on support arm 8 further guide the flowing cold air to the furnace bottom surface of ore-heating furnace 12, so as to further improve the air cooling effect.
[0017] After the cold air in each fan-shaped cooling passage exchanges heat with the high-temperature furnace bottom, the high-temperature gas generated is concentrated into the annular hot flow passage through exhaust port 10, and finally the part of hot flow resources is recycled by hot flow conveying pipeline 11.
[0018] The above is only the preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims
1. A furnace bottom cooling device for a submerged arc furnace, characterized in that: Includes a circular base (1), on which a circular air box (2) is coaxially mounted. Several partitions (3) are evenly installed radially outward on the circumferential surface of the circular air box (2). A fan-shaped cooling channel is formed between two adjacent partitions (3). A flow guiding component is provided in the fan-shaped cooling channel. An air outlet (4) connected to the fan-shaped cooling channel is opened on the circumferential surface of the circular air box (2). The bottom wall of the circular air box (2) is connected to a pre-embedded air duct (5). The outer end of the pre-embedded air duct (5) is connected to a fan (6).
2. The furnace bottom cooling device for a submerged arc furnace according to claim 1, characterized in that: The flow guiding assembly includes an arc-shaped flow guiding plate (7), and several arc-shaped flow guiding plates (7) are evenly installed on the support arm (8). The outer end of the support arm (8) is fixedly connected to the inner circumferential surface of the circular base (1), and the inner arc surface of the arc-shaped flow guiding plate (7) faces the air outlet (4).
3. The furnace bottom cooling device for a submerged arc furnace according to claim 2, characterized in that: The lengths of the arc-shaped guide vanes (7) increase sequentially from the inside to the outside.
4. The furnace bottom cooling device for a submerged arc furnace according to claim 1, characterized in that: A circular enclosure (9) is coaxially fitted on the circular base (1). An annular heat flow channel is formed between the circumferential surface of the circular base (1) and the circular enclosure (9). An exhaust port (10) is provided on the circumferential surface of the circular base (1). The fan-shaped cooling channel and the annular heat flow channel are connected through the exhaust port (10). A heat flow delivery pipeline (11) is connected to the circular enclosure (9).