Furnace bottom structure and flash converting furnace with same

Abstract

The furnace bottom structure is connected with a furnace body, the furnace bottom structure comprises a vertical copper water jacket, a stand column and a furnace bottom arch foot assembly, the vertical copper water jacket abuts against the inner side of the furnace body, the side, facing the furnace body, of the vertical copper water jacket protrudes out of the edge of the vertical copper water jacket to form a boss, and the stand column is connected with the furnace bottom arch foot assembly. An alloy layer is arranged on the side, facing the furnace body, of the vertical copper water jacket and covers the vertical copper water jacket and the boss, the boss abuts against the top end of the furnace bottom arch foot assembly, the furnace bottom arch foot assembly comprises working layer arch foot bricks, a slag layer is formed above the working layer arch foot bricks, the lowest slag face of the slag layer is higher than the top of the boss, and the highest slag face of the slag layer is lower than the top of the alloy layer. Side protection plates are arranged on one outer side of the vertical copper water jacket and one outer side of the furnace bottom arch foot assembly, stand columns are arranged on one sides of the side protection plates, and a plurality of square beams are arranged between the side protection plates and the stand columns; according to the utility model, the service life of the furnace body of the flash converting furnace is prolonged by prolonging the service life of the key part of the furnace body of the flash converting furnace.

Description

Technical Field

[0001] The utility model relates to the technical field of smelting, in particular to a furnace bottom structure and a flash converting furnace with the structure. Background Art

[0002] With the continuous development of smelting technology, while improving the production process, higher requirements are placed on the service life of core production equipment.

[0003] Flash converting furnace is an enhanced smelting equipment, mainly used for converting copper matte or nickel matte. Its core is to use the huge active surface of finely ground materials to achieve efficient smelting through rapid oxidation reaction at high temperature. Flash converting furnace is an important equipment in the field of modern non-ferrous metal smelting, and it plays a key role in improving converting efficiency and environmental protection.

[0004] Although the flash converting furnace has a large production capacity, good environmental protection and a high degree of automation, the furnace life of the flash converting furnace is currently short, generally only 3-4 years. This not only increases the frequency of maintenance and the cost of maintenance, but also affects production efficiency and reduces the production benefits of the smelter. Utility Model Content

[0005] In view of the above situation, it is necessary to provide a furnace bottom structure and a flash converting furnace having the structure to solve the problem of short furnace body life of the flash converting furnace in the prior art.

[0006] A furnace bottom structure, the furnace bottom structure is connected to a furnace body, the furnace bottom structure comprises a vertical copper water jacket, a column and a furnace bottom arch foot assembly, the vertical copper water jacket abuts against the inner side of the furnace body, the side of the vertical copper water jacket facing the furnace body partially protrudes outside the edge of the vertical copper water jacket to form a boss, the side of the vertical copper water jacket facing the furnace body is provided with an alloy layer, the alloy layer covers the vertical copper water jacket and the boss, the boss abuts against the top of the furnace bottom arch foot assembly, and the furnace bottom arch foot assembly comprises a working layer arch foot Bricks, a slag layer is formed above the working layer arch foot bricks, the lowest slag surface of the slag layer is higher than the top of the boss, and the highest slag surface of the slag layer is lower than the top of the alloy layer, and side guard plates are provided on one outer side of the vertical copper water jacket and the furnace bottom arch foot assembly, and the side guard plates are used to protect the furnace bottom arch foot assembly and fix the vertical copper water jacket, and columns are provided on one side of the side guard plates, and a plurality of square beams are provided between the side guard plates and the columns, and the square beams are used to transfer the thrust of the vertical copper water jacket and the furnace bottom arch foot assembly.

[0007] The utility model presses the arch foot bricks of the working layer by means of the boss on the inner side of the vertical copper water jacket, so that the stability of the furnace bottom anti-arch assembly is ensured. At the same time, the furnace bottom anti-arch assembly is protected by the cooling of the vertical copper water jacket, so that its service life is prolonged. An alloy layer is fused on the side of the vertical copper water jacket close to the furnace to resist the corrosion of slag and the homogeneous melting loss with copper. Then, through the cooperation of the side guard plates, the square beams and the like, the static pressure of the melt in the furnace and the thermal expansion force of the refractory material are transmitted to the columns, so that the structure of the entire furnace bottom arch foot assembly can be stabilized, and the influence of the fluctuation of the slag and the crude copper liquid level can be ensured to be adapted for a long time. Therefore, the utility model prolongs the service life of the flash converting furnace by prolonging the service life of the most critical part of the flash converting furnace body.

[0008] Furthermore, the furnace bottom arch foot assembly also includes a permanent layer of anti-arch bricks and permanent layer of arch foot bricks arranged on the top of the high-alumina bricks, a working layer of anti-arch bricks arranged on the side of the permanent layer of anti-arch bricks facing away from the high-alumina bricks, magnesia sand is arranged between the high-alumina bricks and the permanent layer of anti-arch bricks, and the working layer of arch foot bricks are arranged on the side of the permanent layer of arch foot bricks facing away from the high-alumina bricks, the permanent layer of anti-arch bricks are tightly attached to the permanent layer of arch foot bricks, the working layer of anti-arch bricks are tightly attached to the working layer of arch foot bricks, and the boss abuts the working layer of arch foot bricks.

[0009] Furthermore, the column is arranged in parallel with the side guard plate, and the column is located on the outside of the furnace body.

[0010] The utility model discloses a vertical column which is used to finally bear the static pressure of the melt in the furnace and the thermal expansion force of the refractory material.

[0011] Furthermore, the distance between the lowest slag surface of the slag layer and the top of the boss is greater than or equal to 100 mm, and the distance between the highest slag surface of the slag layer and the top of the alloy layer is greater than or equal to 200 mm.

[0012] Furthermore, a plurality of support members are welded on the columns, and the support members are arranged below the square beams, and the support members are used to support the square beams.

[0013] Furthermore, the thickness of the alloy layer is 8 ～ 16mm.

[0014] In the utility model, the alloy layer is used to resist the corrosion of slag and the homogeneous melting loss with copper.

[0015] Furthermore, the vertical copper water jacket is fixed to the side guard plate by a plurality of screws.

[0016] Furthermore, the furnace bottom arch foot assembly is made of refractory material, and the vertical copper water jacket is made of non-refractory material.

[0017] The utility model also provides a flash converting furnace, which has the furnace bottom structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic cross-sectional structure diagram of the first embodiment of the utility model. Description of the drawings:

[0020] Vertical copper water jacket 1 Furnace body 10 Column 2 Boss 11 Furnace bottom arch foot assembly 3 Working layer arch brick 31 Square beam 4 Permanent layer arch brick 32 Support 5 Working layer anti-arch brick 33 Screws 6 Permanent layer anti-arch brick 34 Side guard 7 Magnesia 35 Alloy layer 8 High Alumina Brick 36 Slag layer 9 DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The drawings provide embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing this embodiment is to make the disclosure of the present invention more thorough and comprehensive.

[0022] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by technicians in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items. In addition, the various embodiments of the present invention, the features in the embodiments, and the features of the embodiments can be freely combined without obvious conflicts or contradictions.

[0024] The embodiment of the utility model provides a flash converting furnace, comprising a furnace bottom structure, wherein the furnace bottom structure is connected to the furnace body. Figure 1 The furnace bottom structure includes a vertical copper water jacket 1, a column 2 and a furnace bottom arch foot assembly 3.

[0025] The vertical copper water jacket 1 is arranged close to the inner side of the furnace body 10, and the lower end of the vertical copper water jacket 1 partially protrudes from the edge of the vertical copper water jacket 1 toward the furnace body 10 to form a boss 11. The side of the vertical copper water jacket 1 facing the furnace body 10 is provided with an alloy layer 8, and the alloy layer 8 covers the vertical copper water jacket 1 and the boss 11. The thickness of the alloy layer 8 is 8 ～ 16mm.

[0026] The boss 11 abuts against the top of the working layer arch foot brick 31, and a side guard plate 7 is provided on one outer side of the vertical copper water jacket 1 and the furnace bottom arch foot assembly 3. The vertical copper water jacket 1 is fixed to the side guard plate 7 by a plurality of screws 6. The side guard plate 7 is used to protect the furnace bottom arch foot assembly 3 and fix the vertical copper water jacket 1. A column 2 is provided on one side of the side guard plate 7. The column 2 is arranged parallel to the side guard plate 7, and the column 2 is located on the outer side of the furnace body 10. A plurality of square beams 4 are provided between the side guard plate 7 and the column 2. The square beam 4 is used to transmit the thrust of the vertical copper water jacket 1 and the furnace bottom arch foot assembly 3. A plurality of support members 5 are welded on the column 2. The support member 5 is arranged below the square beam 4, and the support member 5 is used to support the square beam 4.

[0027] The furnace bottom arch foot assembly 3 includes a permanent layer of reverse arch bricks 34 and permanent layer of arch foot bricks 32 arranged on the top of the high-alumina bricks 36, a working layer of reverse arch bricks 33 are arranged on the side of the permanent layer of reverse arch bricks 34 facing away from the high-alumina bricks 36, magnesia sand 35 is arranged between the high-alumina bricks 36 and the permanent layer of reverse arch bricks 34, a working layer of arch foot bricks 31 are arranged on the side of the permanent layer of arch foot bricks 32 facing away from the high-alumina bricks 36, the permanent layer of reverse arch bricks 34 are in close contact with the permanent layer of arch foot bricks 32, and the working layer of reverse arch bricks 33 are in close contact with the working layer of arch foot bricks 31.

[0028] A slag layer 9 is formed above the working layer arch foot bricks 31, the lowest slag surface of the slag layer 9 is higher than the top of the boss 11 by a distance greater than or equal to 100 mm, and the highest slag surface of the slag layer 9 is greater than or equal to 200 mm from the top of the alloy layer 8.

[0029] The furnace bottom arch foot assembly 3 is made of refractory material, and the vertical copper water jacket 1 is made of non-refractory material.

[0030] The utility model presses the working layer arch foot bricks 31 by the boss 11 on the inner side of the vertical copper water jacket 1, so that the furnace bottom anti-arch component 3 can ensure stability. At the same time, the furnace bottom anti-arch component 3 is protected by the cooling of the vertical copper water jacket 1 to extend its service life, and an alloy layer 8 is fused on the side of the vertical copper water jacket 1 facing the furnace body to resist the erosion of slag and the homogeneous melting loss with copper. Then, the static pressure of the melt in the furnace body 10 and the thermal expansion force of the furnace bottom arch foot component 3 are transmitted to the column 2 through the cooperation of the side guard plate 7, the square beam 4 and the column 2, so that the structure of the entire furnace bottom arch foot component 3 is stable and can adapt to the influence of the fluctuation of the slag and the crude copper liquid level for a long time. Therefore, the utility model prolongs the service life of the furnace body 10 of the flash converting furnace by improving the service life of the most critical part of the flash converting furnace body.

[0031] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0032] The above-mentioned embodiments only express the implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A furnace bottom structure, characterized in that: The furnace bottom structure is connected to the furnace body, and the furnace bottom structure includes a vertical copper water jacket, a column and a furnace bottom arch foot assembly. The vertical copper water jacket abuts the inner side of the furnace body, and a part of the vertical copper water jacket facing the furnace body protrudes out of the edge of the vertical copper water jacket to form a boss. The side of the vertical copper water jacket facing the furnace body is provided with an alloy layer, and the alloy layer covers the vertical copper water jacket and the boss. The boss abuts the top of the furnace bottom arch foot assembly. The furnace bottom arch foot assembly includes a working layer of arch foot bricks. A slag layer is formed above the arch foot bricks of the working layer, the lowest slag surface of the slag layer is higher than the top of the boss, and the highest slag surface of the slag layer is lower than the top of the alloy layer. Side guard plates are provided on one outer side of the vertical copper water jacket and the furnace bottom arch foot assembly, and the side guard plates are used to protect the furnace bottom arch foot assembly and fix the vertical copper water jacket. A column is provided on one side of the side guard plate, and a plurality of square beams are provided between the side guard plate and the column, and the square beams are used to transmit the thrust of the vertical copper water jacket and the furnace bottom arch foot assembly.

2. The furnace bottom structure according to claim 1, characterized in that: The furnace bottom arch foot assembly also includes a permanent layer of anti-arch bricks and permanent layer of arch foot bricks arranged on the top of the high-alumina bricks, a working layer of anti-arch bricks arranged on the side of the permanent layer of anti-arch bricks facing away from the high-alumina bricks, magnesia sand is arranged between the high-alumina bricks and the permanent layer of anti-arch bricks, and the working layer of arch foot bricks are arranged on the side of the permanent layer of arch foot bricks facing away from the high-alumina bricks, the permanent layer of anti-arch bricks are tightly attached to the permanent layer of arch foot bricks, the working layer of anti-arch bricks are tightly attached to the working layer of arch foot bricks, and the boss abuts against the working layer of arch foot bricks.

3. The furnace bottom structure according to claim 1, characterized in that: The upright column is arranged in parallel with the side guard plate, and the upright column is located on the outer side of the furnace body.

4. The furnace bottom structure according to claim 2, characterized in that: The distance between the lowest slag surface of the slag layer and the top of the boss is greater than or equal to 100 mm, and the distance between the highest slag surface of the slag layer and the top of the alloy layer is greater than or equal to 200 mm.

5. The furnace bottom structure according to claim 1, characterized in that: A plurality of support members are welded on the columns, and the support members are arranged below the square beams, and are used to support the square beams.

6. The furnace bottom structure according to claim 1, characterized in that: The thickness of the alloy layer is 8 ～ 16mm.

7. The furnace bottom structure according to claim 3, characterized in that: The vertical copper water jacket is fixed to the side guard plate by a plurality of screws.

8. The furnace bottom structure according to claim 1, characterized in that: The furnace bottom arch foot assembly is made of refractory material, and the vertical copper water jacket is made of non-refractory material.

9. A flash converting furnace, characterized in that: A furnace bottom structure having any one of claims 1 to 8.

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