CN203396241U - Graphite composite material ramming furnace lining for ferroalloy furnace - Google Patents
Graphite composite material ramming furnace lining for ferroalloy furnace Download PDFInfo
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- CN203396241U CN203396241U CN201320298029.3U CN201320298029U CN203396241U CN 203396241 U CN203396241 U CN 203396241U CN 201320298029 U CN201320298029 U CN 201320298029U CN 203396241 U CN203396241 U CN 203396241U
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Abstract
The utility model discloses a graphite composite material ramming furnace lining for a ferroalloy furnace. The furnace lining comprises a hearth and a furnace bottom; a fireproof ramming material layer is arranged on the furnace bottom; clay brick layers are arranged on the fireproof ramming material layer; two layers of micropore carbon brick layers are arranged above the clay brick layers; a graphite composite ramming material layer is arranged above the micropore carbon brick layers; and the thickness of the graphite composite ramming material layer is bigger than that of one micropore carbon brick layer. Compared with the prior art, original three layers of carbon brick layers are reduced to the two layers of the carbon brick layers, and the thickness of the ramming material layers is increased so that one layer of carbon bricks is replaced; via the overall ramming furnace lining, the thickness of a fusion reaction area of the furnace bottom of the ferroalloy furnace is increased; and via an oven and the roasting after the oven is opened, a complete and firm smelting area is formed in the overall furnace bottom hearth, so the service lifetime is prolonged.
Description
Technical field
The utility model relates to a kind of mineral hot furnace furnace lining, is specifically related to a kind of ferro-alloy furnace furnace lining.
Background technology
The erosion that cause of refractory material in iron alloy electric furnace production process, has the factors such as physics, chemistry, machinery, and its form of expression is as follows:
1) metal bath (or slag) is invaded innerly from brick fuel brickwork joint, and reacts with it and causes the erosion to refractory material.The for example unsaturated ferrophosphorus of carbon content or ferromanganese, when invading brick fuel brickwork joint, brick fuel produces thermal stress and causes that brickwork joint expands, brick body opening hole is strengthened and crackle; Even, because of buoyancy (ferroalloy density is all higher than brick fuel density), causes and be etched brick body floating and damage furnace lining.
2) although carbonaceous furnace lining has, refractoriness is high, good thermal shock, elevated temperature strength are high, be not the advantages such as alloy and slag infiltration, its shortcoming is oxidizable.In the air in 400 ℃ of above circulations, brick fuel is oxidized rapidly, except brick fuel surface, oxidizing atmosphere is also entered in brick and is reacted with carbon by build by laying bricks or stones gap and brick fuel self air vent channel of brick fuel, make brick fuel first from brickwork joint efflorescence, peel off, have a strong impact on the lining stove life-span.So can only completely cutting off air, uses brick fuel.
3) motlten metal in ferro-alloy furnace and slag and high-temperature gas wash away to corrode to furnace lining mobile and cause the infringement to furnace lining.Add the good fluidity of slag, furnace lining is vulnerable to mechanical erosion and chemical erosion and damages too early.
According to the watt level of ferro-alloy furnace, there is the multiple ferro-alloy furnace type of furnace in China.As shown in Figure 1, the compound ramming bed of material 2 of fire-resistance rammed mass layer 1, undercloak 3, microporous carbon brick layer 6 and graphite being mainly comprised of the fire-resistant concrete of phosphate forms.
As shown in Figure 2, the compound ramming bed of material 2 of the fire-resistant bed of material 1, undercloak 3, microporous carbon brick layer 6 and graphite being mainly comprised of high alumina ramming mass forms.
In two kinds of structures of this of ferro-alloy furnace, all because existing brickwork joint too many, become the main thoroughfare of motlten metal, slag, alkali metal, coal gas infiltration furnace lining, erosion is first from brickwork joint, infiltrate and cause the efflorescence of brick body cracking, is the major reason that final furnace lining damages.
Summary of the invention
The purpose of this utility model is for above-mentioned the deficiencies in the prior art, provides a kind of and can reduce brickwork joint, extends the body of heater graphite compound material rammed lining for ferro-alloy furnace in service life.
The technical solution of the utility model realizes in the following manner: graphite compound material rammed lining for a kind of ferro-alloy furnace, comprise cupola well and furnace bottom, furnace bottom is provided with fire-resistance rammed mass layer, fire-resistance rammed mass layer is provided with undercloak, undercloak top is provided with microporous carbon brick layer, described microporous carbon brick layer is two-layer, and microporous carbon brick layer top is provided with the compound ramming bed of material of graphite, and the compound ramming mass layer thickness of graphite is greater than one deck microporous carbon brick layer.
Described fire-resistance rammed mass layer is high aluminium brick layer.
Described fire-resistance rammed mass layer is the fire-resistant concrete layer of phosphate.
Compared with prior art, the utility model is reduced to two-layer brick fuel layer by three layers of original brick fuel layer, and the thickness of the ramming bed of material is increased to substitute one deck brick fuel, by whole rammed lining, increase the thickness in ferro-alloy furnace furnace bottom frit reaction district, by the roasting after baker and blow-on, make whole furnace bottom molten bath form complete, a firm smelting zone, extended the life-span of furnace lining.
Accompanying drawing explanation
Fig. 1 is ferro-alloy furnace lining structure schematic diagram in prior art.
Fig. 2 is ferro-alloy furnace lining structure schematic diagram in prior art.
Fig. 3 is ferro-alloy furnace lining structure schematic diagram in the utility model.
Fig. 4 is ferro-alloy furnace lining structure schematic diagram in the utility model.
The specific embodiment
Embodiment 1: as shown in Figure 3, graphite compound material rammed lining for a kind of ferro-alloy furnace, its diameter is 8000mm, comprise cupola well and furnace bottom, furnace bottom is provided with fire-resistance rammed mass layer 1, and fire-resistance rammed mass layer 1 is provided with undercloak 3, undercloak 3 tops are provided with microporous carbon brick layer 6, described microporous carbon brick layer 6 is two-layer, and microporous carbon brick layer 6 top are provided with the compound ramming bed of material 2 of graphite, and the compound ramming bed of material 2 thickness of graphite are greater than one deck microporous carbon brick layer.
Relatively and prior art, in the present embodiment, the compound ramming bed of material 2 thickness of graphite increase to substitute one deck microporous carbon brick.On cupola well, there are high-alumina brick 4 and schungite carbon-silicon carbide iron mouth brick 5.
Wherein, described fire-resistance rammed mass layer 1 is the High-Alumina ramming bed of material.
The present embodiment, by whole rammed lining, increases the thickness in ferro-alloy furnace furnace bottom frit reaction district, by the roasting after baker and blow-on, makes whole furnace bottom molten bath form complete, a firm smelting zone.Mechanical erosion and chemical erosion ability are resisted at the bottom of can greatly improving ferro-alloy furnace in this complete, firm smelting zone, solve the original ferro-alloy furnace furnace bottom blow-on infringement that fused solution metal, slag and the high-temperature gas of generation cause bearth brick lining soon.Owing to being sintered into a firm tight integral body " drain pan " in the smelting process of the present embodiment after baker and blow-on, greatly reduced the oxidized erosion of brick fuel, strengthen the ability of resisting mechanical erosion and chemical erosion, extended the lining durability of ferro-alloy furnace.
Because graphite compound material price is lower than original microporous carbon brick price, so compare with original furnace lining structure, the utility model can be saved furnace lining material expense, extends the lining durability of ferro-alloy furnace.
Embodiment 2: as shown in Figure 4, graphite compound material rammed lining for a kind of ferro-alloy furnace, its diameter is 9200mm, comprise cupola well and furnace bottom, furnace bottom is provided with fire-resistance rammed mass layer 1, and fire-resistance rammed mass layer 1 is provided with undercloak 3, undercloak 3 tops are provided with microporous carbon brick layer 6, described microporous carbon brick layer 6 is two-layer, and microporous carbon brick layer 6 top are provided with the compound ramming bed of material 2 of graphite, and the compound ramming bed of material 2 thickness of graphite are greater than one deck microporous carbon brick layer.
With respect to prior art, the compound ramming bed of material 2 thickness of the present embodiment graphite increase to substitute one deck microporous carbon brick.On its cupola well, there are high-alumina brick 4 and schungite carbon-silicon carbide iron mouth brick 5.
Wherein, described fire-resistance rammed mass layer 1 is the fire-resistant concrete layer of phosphate.
Claims (3)
1. graphite compound material rammed lining for a ferro-alloy furnace, comprise cupola well and furnace bottom, furnace bottom is provided with fire-resistance rammed mass layer (1), fire-resistance rammed mass layer (1) is provided with undercloak (3), undercloak (3) top is provided with microporous carbon brick layer (6), it is characterized in that: described microporous carbon brick layer (6) is for two-layer, and microporous carbon brick layer (6) top is provided with the compound ramming bed of material of graphite (2), and the compound ramming bed of material of graphite (2) thickness is greater than one deck microporous carbon brick layer.
2. graphite compound material rammed lining for ferro-alloy furnace according to claim 1, is characterized in that: described fire-resistance rammed mass layer (1) is high aluminium brick layer.
3. graphite compound material rammed lining for ferro-alloy furnace according to claim 1, is characterized in that: described fire-resistance rammed mass layer (1) is the fire-resistant concrete layer of phosphate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320298029.3U CN203396241U (en) | 2013-05-28 | 2013-05-28 | Graphite composite material ramming furnace lining for ferroalloy furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320298029.3U CN203396241U (en) | 2013-05-28 | 2013-05-28 | Graphite composite material ramming furnace lining for ferroalloy furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203396241U true CN203396241U (en) | 2014-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320298029.3U Expired - Fee Related CN203396241U (en) | 2013-05-28 | 2013-05-28 | Graphite composite material ramming furnace lining for ferroalloy furnace |
Country Status (1)
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| CN (1) | CN203396241U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106288806A (en) * | 2015-05-11 | 2017-01-04 | 中国恩菲工程技术有限公司 | Metallurgical furnace |
-
2013
- 2013-05-28 CN CN201320298029.3U patent/CN203396241U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106288806A (en) * | 2015-05-11 | 2017-01-04 | 中国恩菲工程技术有限公司 | Metallurgical furnace |
| CN106288806B (en) * | 2015-05-11 | 2018-09-11 | 中国恩菲工程技术有限公司 | metallurgical furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Pingdingshan City Lushan Yaxing Carbon Material Co., Ltd. Assignor: Xiao Wei|Li Jinpo Contract record no.: 2014410000083 Denomination of utility model: Graphite compound material rammed lining for ferro-alloy furnace Granted publication date: 20140115 License type: Exclusive License Record date: 20140826 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180511 Address after: 467300 the middle section of Xinggong Road, North District, Lushan Mountain County, Pingdingshan, Henan Patentee after: Lushan Mountain Star Technology Development Co. Ltd. Address before: 467300 No. 6, five Lane Fort Road, Chengguan Town, Lushan Mountain County, Pingdingshan, Henan 1 Co-patentee before: Li Jinpo Patentee before: Xiao Wei |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140115 Termination date: 20210528 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |