WO2017193704A1

WO2017193704A1 - Metallurgical furnace

Info

Publication number: WO2017193704A1
Application number: PCT/CN2017/077359
Authority: WO
Inventors: 尉克俭; 蒋继穆; 曹珂菲; 李兵; 李东波; 张振民; 黎敏; 张海鑫; 崔大韡; 陆金忠; 唐续龙; 许欣; 孙晓峰; 李锋; 颜杰; 李栋; 周钢; 李海春; 李晓霞
Original assignee: 中国恩菲工程技术有限公司
Priority date: 2016-05-10
Filing date: 2017-03-20
Publication date: 2017-11-16
Also published as: CL2016002595A1

Abstract

A metallurgical furnace (1), comprising: a furnace body (100) having a hearth (121) provided therein; a plurality of spray guns (200) disposed on the top of the furnace body (100) and extending into the hearth (121) from top to bottom.

Description

Metallurgical furnace

Technical field

The present invention relates to the field of metallurgical technology, and in particular to a metallurgical furnace.

Background technique

The top-blown metallurgical furnace in the related art generally has a deep furnace and a shallow molten pool, a low utilization rate of the furnace body, and frequent maintenance and repair, and the production needs to be stopped when the maintenance spray gun is replaced, resulting in a lower overall operation rate. In addition, due to the limited size, the maximum capacity of the top-blown furnace as a melting furnace is only 300,000 tons of copper per year, while the maximum capacity as a blowing furnace is only 100,000 tons of copper per year.

Summary of the invention

The present invention aims to solve at least one of the above technical problems in the related art to some extent. To this end, the present invention proposes a metallurgical furnace which has the advantages of high utilization rate of the furnace body, no need for frequent maintenance and repair, high overall operation rate and high productivity.

In order to achieve the above object, a metallurgical furnace is provided according to an embodiment of the present invention, the metallurgical furnace comprising: a furnace body having a furnace; a plurality of spray guns, a plurality of the spray guns being disposed at the top of the furnace body And extending into the furnace from top to bottom.

The metallurgical furnace according to the embodiment of the invention has the advantages of high utilization rate of the furnace body, no need for frequent maintenance and repair, high overall operation rate and high productivity.

In addition, the metallurgical furnace according to an embodiment of the invention may also have the following additional technical features:

According to an embodiment of the invention, the furnace body is a horizontal furnace body.

According to an embodiment of the invention, the height of the furnace is respectively smaller than the width of the furnace and the length of the furnace.

According to an embodiment of the invention, the cross-sectional area of the furnace is gradually reduced from top to bottom.

According to an embodiment of the present invention, a plurality of the spray guns are arranged in a plurality of rows and columns in the longitudinal direction and the width direction of the furnace body, respectively.

According to an embodiment of the invention, the plurality of rows and columns of spray guns are respectively located at the center of the furnace body in the longitudinal direction and the width direction of the furnace body.

According to an embodiment of the invention, the grate includes a lance area and a non-gun area arranged in a horizontal direction, A plurality of said spray guns are located within the area of the spray gun.

According to an embodiment of the invention, the non-gun region is disposed around the lance region.

According to an embodiment of the invention, the spray gun is a water cooled spray gun or a non water cooled spray gun.

According to an embodiment of the invention, the furnace body is a stationary furnace body.

According to an embodiment of the present invention, the furnace body includes: an elastic skeleton; a furnace body, the furnace body is disposed on the elastic skeleton, and the furnace is formed in the furnace body, and the plurality of the spray guns are installed at On the elastic skeleton.

According to an embodiment of the invention, the side wall of the furnace body is inclined from bottom to top.

DRAWINGS

1 is a front cross-sectional view of a metallurgical furnace in accordance with an embodiment of the present invention.

Figure 2 is a side cross-sectional view of the metallurgical furnace of Figure 1.

Figure 3 is a plan view of the metallurgical furnace shown in Figure 1.

Reference mark:

Metallurgical furnace

Furnace body 100, elastic frame 110, furnace body 120, furnace 121, lance area 122, non-gun area 123,

Spray gun 200.

detailed description

The embodiments of the present invention are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals are used to refer to the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are intended to be illustrative of the invention and are not to be construed as limiting.

The present invention has been made based on the findings of the following facts and problems by the inventors of the present application:

In the related art, a top-blown metallurgical furnace, such as an Osmite furnace or an Asa furnace, has a vertical cylindrical shape and is in the form of a single shot top blowing.

Single gun air supply, large air volume, vigorous stirring, severe melt splashing, so the furnace should be set higher, while the depth of the melt in the molten pool needs to be shallow, one is too much melt mixing, large momentum, easy The furnace body is shaken, the design is not good, and it is easy to cause resonance of the workshop. Second, the spray gun is not easy to blow through, and the speed of the process reaction will be affected. Therefore, the furnace is deep and the molten pool is shallow, resulting in a low utilization rate of the entire furnace.

Moreover, due to the large amount of air blown by a single gun and serious splashing, the wear and ablation of the spray gun are serious, and the service life of the spray gun is generally not long. Even the water-cooled gun has the problem of blockage and burning of the gun head, so frequent maintenance is required. And replacement, and when replacing the maintenance spray gun, it is necessary to stop the process wind and stop the material, which means that the top blow furnace should stop production, only the heat preservation operation, due to the frequent replacement of the spray gun, the overall operation rate of the top blow furnace is low. .

In addition, due to the limited amount of maximum gas delivered by a single gun, the maximum capacity of the top-blown furnace as a melting furnace is only 300,000 tons of copper per year, while the maximum capacity as a blowing furnace is only 100,000 tons of copper per year.

Therefore, the top-blown metallurgical furnace in the related art has disadvantages such as low utilization rate of the furnace body, frequent maintenance and repair, low overall operation rate, and low productivity.

To this end, a metallurgical furnace 1 is proposed in accordance with an embodiment of the present invention, and a metallurgical furnace 1 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

As shown in FIGS. 1-3, a metallurgical furnace 1 according to an embodiment of the present invention includes a furnace body 100 and a plurality of spray guns 200.

The furnace body 100 has a furnace 121 therein, and the furnace body 100 is provided with a feeding port, a discharge port and a smoke outlet respectively communicating with the furnace 121. A plurality of lances 200 are provided at the top of the furnace body 100 and extend into the furnace 121 from top to bottom.

According to the metallurgical furnace 1 of the embodiment of the present invention, by providing a plurality of spray guns 200 at the top of the furnace body 100, a multi-gun top-blowing structure is constructed, thereby having the following advantages:

Multi-gun blowing, so that the spray is evenly distributed throughout the molten pool, there is no need to rely on a single spray gun to stir the entire molten pool, so the spray speed of each spray gun is low, and the process air volume of the single spray gun 200 can also be set. Smaller. The single-gun blowing speed is low, the air volume is small, and the splashing is small, so that the furnace 121 does not have to be set higher and the melt in the molten pool can be deepened, thereby improving the utilization rate of the furnace body 100.

Moreover, since the air supply amount of each of the spray guns 200 is relatively small, the splashing is small, and the blowing speed is also low, the wear and ablation of the spray gun 200 is light, the service life is long, and frequent maintenance, repair, and replacement are not required, and When the maintenance spray gun 200 is replaced, only the spray gun 200 that needs to be replaced is stopped, and the other spray guns 200 that do not need to be replaced can continue to be blown. Therefore, the metallurgical furnace 1 does not need to stop the feed, and the production can be continued, thereby improving the overall operation of the metallurgical furnace 1. rate.

In addition, the metallurgical furnace 1 can be provided with different numbers of spray guns 200 depending on the scale, so that the production capacity is not limited, for example, it can reach 400,000 tons of copper/year or higher.

Therefore, the metallurgical furnace 1 according to the embodiment of the present invention has the advantages of high furnace utilization rate, no need for frequent maintenance and repair, high overall operation rate, and high productivity.

A metallurgical furnace 1 according to a specific embodiment of the present invention will now be described with reference to the accompanying drawings.

As shown in FIGS. 1-3, a metallurgical furnace 1 according to an embodiment of the present invention includes a furnace body 100 and a plurality of spray guns 200 disposed on the top of the furnace body 100.

Specifically, as shown in FIGS. 1 and 2, the furnace body 100 is a horizontal furnace body. For example, the height of the furnace 121 in the up and down direction is smaller than the width and length of the furnace 121 in the horizontal direction, respectively.

Therefore, the hearth 121 is shorter than the single-shot top-blown furnace in the related art, and only the one-third or even one-quarter of the height of the single-shot top-blown furnace in the related art is replaced. When the spray gun 200 is pulled out of the furnace 121, the stroke is short, so that the height of the plant can be reduced, thereby reducing the overall construction cost.

Moreover, since the furnace 121 is relatively short, the feeding system does not need to be lifted very high, further reducing the construction cost.

In addition, the material produced in the furnace of the previous stage can flow directly into the furnace 121 through the chute, avoiding the low-level pollution caused by the packaging reversal, which is beneficial to optimize the configuration, reduce intermediate processes such as cooling and re-crushing, and fully utilize the heat of the melt. It is conducive to energy saving and emission reduction.

In some specific examples of the present invention, as shown in FIG. 3, a plurality of spray guns 200 are respectively arranged in a plurality of rows and columns along the length direction and the width direction of the furnace body 100, and the plurality of rows and columns of spray guns 200 are respectively in the furnace. The body 100 is located at the center of the furnace body 100 in the longitudinal direction and the width direction.

Further, as shown in FIG. 3, the furnace 121 includes a lance area 122 and a non-gun area 123 arranged in a horizontal direction, and a plurality of lances 200 are located within the lance area 122, for example, a non- lance area 123 is disposed around the lance area 122. Thereby, the separation of the metal and the slag in the furnace can be facilitated, so that the recovery rate of the valuable metal can be improved.

Optionally, the spray gun 200 is a water-cooled spray gun, so that the spray gun 200 has a long life and is easy to replace. Of course, the spray gun 200 can also be a non-water-cooled spray gun, which is easy to manufacture and manufacture, and is designed to be rotatable to avoid sticking to the furnace cover of the furnace body 100.

In some embodiments of the present invention, the furnace body 100 is a stationary furnace body, that is, the furnace body 100 is non-rotatable, thereby facilitating the provision of the discharge port, the outlet, the feeding port, and the like, and the sealing property is good.

Specifically, as shown in FIGS. 1-3, the furnace body 100 includes an elastic skeleton 110 and a furnace body 120. The furnace body 120 is disposed on the elastic frame 110. The furnace body 120 has a furnace cover and the furnace 121 is formed in the furnace body 120. The plurality of spray guns 200 are mounted on the elastic frame 110 and extend downward through the furnace cover into the furnace 121. The elastic frame 110 is used to support the furnace body 120 and can function as a shock absorbing buffer for the furnace body 120.

Advantageously, as shown in Figures 1-3, the cross-sectional area of the furnace 121 is gradually reduced from top to bottom, for example, each side wall of the furnace body 100 is inclined from bottom to top.

Alternatively, the metallurgical furnace 1 can perform cooling design and refractory design for different parts to ensure the service life of the metallurgical furnace 1, and flexible addition of residual poles and other cold copper materials according to heat balance requirements.

The metallurgical furnace 1 according to the embodiment of the invention adopts horizontal multi-gun top blowing, and has the advantages of high utilization rate of the furnace body, no need for frequent maintenance and repair, high overall operation rate, high production capacity, low construction cost, and energy saving and emission reduction.

Other configurations and operations of metallurgical furnace 1 in accordance with embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation or position of indications such as "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. The relationship is based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of the description of the invention and the simplification of the description, and does not indicate or imply that the device or component referred to has a specific orientation, is constructed and operated in a specific orientation, and thus It is not to be understood as limiting the invention.

Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Or implicitly indicate the number of technical features indicated. Thus, features defining "first" and "second" may include one or more of the features either explicitly or implicitly. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless specifically defined otherwise.

In the present invention, the terms "installation", "connected", "connected", "fixed" and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. , or integrated; can be mechanical connection, or can be electrical connection; can be directly connected, or can be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction of two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

In the present invention, the first feature "on" or "under" the second feature may include direct contact of the first and second features, and may also include first and second features, unless otherwise specifically defined and defined. It is not in direct contact but through additional features between them. Moreover, the first feature "above", "above" and "above" the second feature includes the first feature directly above and above the second feature, or merely indicating that the first feature level is higher than the second feature. The first feature "below", "below" and "below" the second feature includes the first feature directly below and below the second feature, or merely the first feature level being less than the second feature.

In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means a specific feature described in connection with the embodiment or example. A structure, material or feature is included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms is not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Further, various embodiments or examples described in this specification can be joined and combined by those skilled in the art.

Although the embodiments of the present invention have been shown and described, it is understood that the above-described embodiments are illustrative and are not to be construed as limiting the scope of the invention. The embodiments are subject to variations, modifications, substitutions and variations.

Claims

A metallurgical furnace characterized by comprising:

a furnace body having a furnace;

a plurality of spray guns, a plurality of the spray guns being disposed at the top of the furnace body and extending into the furnace from top to bottom.
The metallurgical furnace according to claim 1, wherein the furnace body is a horizontal furnace body.
The metallurgical furnace according to claim 2, wherein the height of the furnace is smaller than the width of the furnace and the length of the furnace, respectively.
The metallurgical furnace according to claim 1, wherein the cross-sectional area of the furnace is gradually reduced from top to bottom.
The metallurgical furnace according to claim 1, wherein a plurality of said spray guns are arranged in a plurality of rows and a plurality of rows in the longitudinal direction and the width direction of said furnace body, respectively.
The metallurgical furnace according to claim 5, wherein said plurality of rows and columns of spray guns are respectively located at the center of said furnace body in the longitudinal direction and the width direction of said furnace body.
The metallurgical furnace according to claim 1, wherein said furnace comprises a lance area and a non-gun area arranged in a horizontal direction, and said plurality of said lances are located in said lance area.
The metallurgical furnace of claim 7 wherein said non-gun region is disposed about said lance region.
The metallurgical furnace of claim 1 wherein said spray gun is a water cooled spray gun or a non water cooled spray gun.
The metallurgical furnace according to claim 1, wherein the furnace body is a stationary furnace body.
The metallurgical furnace of claim 1 wherein said furnace body comprises:

Elastic skeleton

a furnace body, the furnace body is disposed on the elastic skeleton, and the furnace is formed in the furnace body, and a plurality of the spray guns are mounted on the elastic skeleton.
The metallurgical furnace according to claim 11, wherein the side wall of the furnace body is inclined from bottom to top.