CN219494821U

CN219494821U - Neutral furnace

Info

Publication number: CN219494821U
Application number: CN202320615483.0U
Authority: CN
Inventors: 田龙; 田政; 寇凤山; 陈辉
Original assignee: Xixia Zhongde Automobile Parts Co ltd
Current assignee: Xixia Zhongde Automobile Parts Co ltd
Priority date: 2023-03-27
Filing date: 2023-03-27
Publication date: 2023-08-08
Anticipated expiration: 2033-03-27

Abstract

The utility model discloses a neutral furnace, which belongs to the technical field of furnace building equipment and comprises the following components: the furnace comprises a furnace shell, wherein the top end of the furnace shell is provided with an opening, and a furnace edge weight is arranged at the opening of the top end of the furnace shell; the furnace wall furnace lining is arranged on the inner wall of the furnace shell, and an induction coil is arranged between the furnace wall furnace lining and the inner wall of the furnace shell; the furnace bottom furnace lining comprises a first neutral layer, a second neutral layer and a third acid layer which are sequentially contacted from top to bottom. The utility model uses the acid material to replace the neutral material at the unimportant position to reduce the cost without affecting the field use, and can reduce the furnace construction cost while ensuring the service life of the furnace lining.

Description

Neutral furnace

Technical Field

The utility model belongs to the technical field of furnace building equipment, and particularly relates to a neutral furnace.

Background

The lining of the heat-resistant steel electric furnace is composed of various aluminum-rich spinel-based neutral dry vibrating materials which are mainly made of high alumina corundum, high-quality magnesia and the like, and the furnace is built by adopting a dry vibrating and melting process. At present, a 3t coreless induction furnace melts molten steel or molten iron, the tapping temperature is between 1690 and 1740 ℃ in the using process, the lining erosion is fast due to high temperature, and a general scheme is adopted that in the furnace building process, the service life of the furnace lining is ensured to be capable of meeting the requirements by manufacturing the furnace lining through a plurality of layers of thickened neutral materials, but the furnace building cost is increased, so that how to provide the furnace lining capable of reducing the cost while ensuring the service life is a problem which needs to be solved by a person in the field.

Disclosure of Invention

In view of the above, the utility model provides a neutral furnace, which can reduce the furnace construction cost while guaranteeing the service life.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

a neutral furnace, comprising:

an opening is formed in the top end of the furnace shell, and a furnace edge weight is arranged at the opening of the top end of the furnace shell;

the furnace wall furnace lining is arranged on the inner wall of the furnace shell, and an induction coil is arranged between the furnace wall furnace lining and the inner wall of the furnace shell;

the furnace bottom furnace lining comprises a first neutral layer, a second neutral layer and a third acid layer which are sequentially contacted from top to bottom, and an induction coil is arranged between the third acid layer and the bottom end of the furnace shell.

Preferably, the neutral furnace further comprises a furnace mouth, wherein the furnace mouth is obliquely arranged at the opening, and the furnace mouth and the furnace shell are integrally formed.

Preferably, the thicknesses of the first neutral layer, the second neutral layer and the third acidic layer are all the same.

Preferably, the neutral furnace further comprises a furnace cover, wherein the furnace cover is detachably arranged at the top of the furnace shell, and the furnace cover is matched with the opening to seal the furnace shell.

Preferably, the neutral furnace further comprises a heat insulating layer, the heat insulating layer comprises a first heat insulating layer and a second heat insulating layer, the first heat insulating layer is arranged between the furnace wall furnace lining and the induction coil, and the second heat insulating layer is arranged between the furnace bottom furnace lining and the induction coil.

The utility model has the beneficial effects that:

according to the utility model, the first neutral layer, the second neutral layer and the third acid layer are sequentially arranged from top to bottom, the bottom-layer furnace burden which is not easy to erode is replaced by the furnace burden with lower cost, and the acid material is used for preparing the third acid layer, so that the use quantity of the neutral material is reduced, and the furnace construction cost is reduced. The use of acid materials instead of non-essential neutral materials reduces costs without affecting field use, meets company cost reduction requirements, is easy to monitor, is simple to operate, and facilitates field construction, additional aspects and advantages of the present utility model will be set forth in part in the description which follows, which will become apparent from the description.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a neutral furnace of the present utility model.

Wherein, in the figure:

1. a first neutral layer; 2. a second neutral layer; 3. a third acidic layer; 4. furnace wall lining; 5. an induction coil; 6. a furnace shell; 7. a furnace mouth; 8. furnace edge iron weights; 9. a first insulating layer; 10. and a second heat insulating layer.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1, the utility model discloses a neutral furnace, comprising:

the furnace shell 6, the top end of the furnace shell 6 is provided with an opening, and the opening of the top end of the furnace shell 6 is provided with a furnace edge weight 8; the furnace edge weight 8 is fixed at the opening position of the furnace shell 6 so as to avoid the induction coil 5 from being damaged by impact when solid furnace burden is added into the furnace, and the furnace edge weight 8 and the top end of the furnace shell 6 are preferably fixed through bolts so as to be convenient to detach and replace.

The furnace wall furnace lining 4, the furnace wall furnace lining 4 is arranged on the inner wall of the furnace shell 6, and an induction coil 5 is arranged between the furnace wall furnace lining 4 and the inner wall of the furnace shell 6; an induction current is generated in the metal furnace burden by electromagnetic induction of the induction coil 5, and when the induction current flows in the metal furnace burden, heat is generated by the resistor, so that the metal furnace burden is heated and melted. Preferably, the furnace wall lining 4 is made of neutral materials, preferably aluminum-rich spinel-based neutral dry vibration materials which are mainly made of various high-alumina corundum, high-quality magnesia and the like, and the furnace is built by adopting a dry vibration and investment process.

The furnace comprises a furnace bottom lining, wherein the furnace bottom lining comprises a first neutral layer 1, a second neutral layer 2 and a third acid layer 3 which are sequentially contacted from top to bottom, and an induction coil 5 is arranged between the third acid layer 3 and the bottom end of a furnace shell 6; the first neutral layer 1 and the second neutral layer 2 are both made of neutral materials, the third acid layer 3 is made of acid materials, the neutral materials for constructing the first neutral layer 1 and the second neutral layer 2 are identical to those for constructing the furnace wall lining 4, preferably, the acid materials are formed by dry ramming with quartz sand as a main raw material, preferably, the binder of the neutral materials and the acid materials is borax or boric acid, the furnace is disassembled from the furnace in the using process of the furnace, the corrosion thickness of the furnace bottom is about ten centimeters, and the residual thickness of the furnace bottom is twenty centimeters, so that the neutral materials at the bottommost layer are replaced with the acid materials under the condition of ensuring that the furnace bottom lining is not completely corroded, and the cost is reduced by using the acid materials to replace the neutral materials at unimportant positions without affecting the field use.

In this embodiment, preferably, the neutral furnace further includes a furnace mouth 7, the furnace mouth 7 is obliquely disposed at the opening, the furnace mouth 7 and the furnace shell 6 are integrally formed, and the added furnace burden is guided into the furnace shell 6 through the furnace mouth 7, so that impact of the furnace burden on the furnace wall lining 4 and the furnace bottom lining can be reduced, repair workload is reduced, and work efficiency is improved.

In the present embodiment, it is preferable that the thicknesses of the first neutral layer 1, the second neutral layer 2, and the third acidic layer 3 are all the same.

In this embodiment, preferably, the neutral furnace further includes a furnace cover, the furnace cover is detachably disposed at the top of the furnace shell 6, the furnace cover is matched with the opening to seal the furnace shell 6, and the furnace cover is preferably made of a heat-insulating material, so as to improve the heat-insulating effect inside the furnace shell 6.

In this embodiment, preferably, the neutral furnace further comprises a thermal insulation layer comprising a first thermal insulation layer 9 and a second thermal insulation layer 10, the first thermal insulation layer 9 being arranged between the furnace wall lining 4 and the induction coil 5, the second thermal insulation layer 10 being arranged between the furnace bottom lining and the induction coil 5; preferably, the first and second heat insulating layers 9 and 10 are asbestos plates.

According to the utility model, the third acid layer 3 is prepared by using the acid materials, so that the use quantity of the neutral materials is reduced, the furnace construction cost is reduced, sixteen bags of neutral materials and eight bags of acid materials are needed to construct the furnace bottom with the thickness of about thirty centimeters for each three-ton coreless induction furnace, compared with the prior art that twenty-four bags of neutral materials are needed to construct the furnace bottom with the thickness of about thirty centimeters for each three-ton coreless induction furnace with all neutral materials, the furnace construction cost can be saved by about 0.16 ten thousand yuan for one time, the furnace construction time is about 140 times for one year, the cost can be saved by about 22.4 ten thousand for one year after the improvement, the cost is reduced by using the acid materials to replace neutral materials at unimportant positions, the site use is not influenced, and the operation is simple and the site construction is convenient.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to the embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A neutral furnace, comprising:

2. The neutral furnace as claimed in claim 1, further comprising a furnace mouth, wherein the furnace mouth is obliquely arranged at the opening, and the furnace mouth and the furnace shell are integrally formed.

3. The neutral furnace of claim 1, wherein the first neutral layer, the second neutral layer, and the third acidic layer are all the same thickness.

4. The neutral furnace as claimed in claim 1, further comprising a furnace cover detachably disposed on top of the furnace shell, the furnace cover cooperating with the opening to seal the furnace shell.

5. The neutral furnace as claimed in claim 1, further comprising a thermal insulation layer comprising a first thermal insulation layer and a second thermal insulation layer, the first thermal insulation layer being disposed between the furnace wall lining and the induction coil, the second thermal insulation layer being disposed between the furnace bottom lining and the induction coil.