CN107893144A - A kind of spherical bottom construction of converter - Google Patents
A kind of spherical bottom construction of converter Download PDFInfo
- Publication number
- CN107893144A CN107893144A CN201711383681.4A CN201711383681A CN107893144A CN 107893144 A CN107893144 A CN 107893144A CN 201711383681 A CN201711383681 A CN 201711383681A CN 107893144 A CN107893144 A CN 107893144A
- Authority
- CN
- China
- Prior art keywords
- brick
- arc
- shaped transition
- molten bath
- circular
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010276 construction Methods 0.000 title claims abstract description 17
- 239000011449 brick Substances 0.000 claims abstract description 81
- 230000007704 transition Effects 0.000 claims abstract description 32
- 239000011819 refractory material Substances 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 6
- 230000008569 process Effects 0.000 claims abstract description 6
- 230000003247 decreasing effect Effects 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 6
- RWDBMHZWXLUGIB-UHFFFAOYSA-N [C].[Mg] Chemical compound [C].[Mg] RWDBMHZWXLUGIB-UHFFFAOYSA-N 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 abstract description 20
- 229910052799 carbon Inorganic materials 0.000 abstract description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 10
- 239000000395 magnesium oxide Substances 0.000 abstract description 10
- 229910000831 Steel Inorganic materials 0.000 abstract description 7
- 238000002844 melting Methods 0.000 abstract description 7
- 230000008018 melting Effects 0.000 abstract description 7
- 239000010959 steel Substances 0.000 abstract description 7
- 238000003723 Smelting Methods 0.000 abstract description 5
- 230000008646 thermal stress Effects 0.000 abstract description 3
- 230000009467 reduction Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
- C21C5/48—Bottoms or tuyéres of converters
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/44—Refractory linings
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The invention provides a kind of spherical bottom construction of converter, and it is made up of shaft brick, molten bath arc-shaped transition brick, furnace bottom arc-shaped transition brick and circular bottom brick；Described converter bottom is equipped with circular bottom brick, and furnace wall and round kiln bottom, shaft brick is interregional there are trigonum；Described circular bottom brick passes sequentially through furnace bottom arc-shaped transition brick, molten bath arc-shaped transition brick to shaft region transfers so that circular furnace bottom forms a spherical entirety with molten bath, and trigonum area is greatly decreased.The present invention can effectively disperse dore furnace bottom and molten bath area thermal stress, extend converter service life by spherical structure form；Invent simultaneously using arc-shaped transition area and circular furnace bottom structure, reduce in smelting process the resistance of motion between molten steel and refractory material, reach the purpose of reduction furnace bottom and molten bath magnesia carbon brick melting loss.
Description
Technical field
The invention belongs to field of iron and steel smelting, and in particular to a kind of spherical bottom construction of converter.
Background technology
When converter smelting low-carbon, Low-phosphorus Steel, molten bath area that the high oxidative of molten steel and clinker causes furnace bottom and adjoined therewith
Serious, furnace bottom significantly upper and lower fluctuation is corroded in domain, is caused combined blown converter bottom blowing element to block, mixing effect decline, is effectively blown again
Than reducing, and the structure type of furnace bottom has a direct impact to using effect.
Prior art is primarily present following problem：Existing converter bottom generally use " annular design, returning flat turn ", i.e., by
Shaft magnesia carbon brick, the flat block magnesia carbon brick in molten bath, furnace bottom return flat magnesia carbon brick, trigonum and round kiln bottom magnesia carbon brick composition (such as Fig. 2 institutes
Show).Flat regional structure imprecision is returned in round kiln bottom with molten bath, furnace bottom, and trigonum removes difficulties, and bleed-out risk be present；" return flat turn over
Body " section is maximum to the resistance of molten steel stream, stress concentration, and magnesia carbon brick melting loss is fast；During follow-up maintenance, furnace bottom is relatively hard to keep
The perfect condition of " middle concave, edge are convex ", it is bad to blow mixing effect again, effectively blows again than low, and hidden danger of keeping the safety in production is larger.
The content of the invention
To solve the above problems, the invention provides a kind of spherical bottom construction of converter, simple in construction, easy for construction, energy
Effectively abatement trigonum, can effectively reduce furnace bottom and molten bath magnesia carbon brick melting loss.
The concrete technical scheme of the present invention is as follows：A kind of spherical bottom construction of converter, it is by shaft brick, molten bath arc-shaped transition
Brick, furnace bottom arc-shaped transition brick, trigonum and circular bottom brick composition；Described shaft region is provided with shaft brick；Described turns
Furnace bottom is equipped with circular bottom brick, and transitional region there are trigonum between furnace wall and circular bottom brick, shaft brick；Described circle
Shape bottom brick passes sequentially through furnace bottom arc-shaped transition brick, molten bath arc-shaped transition brick to shaft region transfers so that circular furnace bottom and molten bath
A spherical entirety is formed, trigonum area is greatly decreased.
Further, described shaft brick, molten bath arc-shaped transition brick, furnace bottom arc-shaped transition brick, circular bottom brick material are
Magnesium carbon or other material refractory materials, brick design according to converter shell shape and process requirements.
Further, refractory material is filled with described trigonum.
Compared with prior art, advantages of the present invention is：
1) circular furnace bottom of the invention by spherical designs to the transition of molten bath position so that circular furnace bottom forms one with furnace wall brick
Spherical entirety, cut down trigonum area, it is dangerous to reduce bleed-out；
2) present invention can effectively disperse dore furnace bottom and molten bath area thermal stress, extend converter by spherical structure form
Service life；
3) present invention is reduced and moved in smelting process between molten steel and refractory material using arc-shaped transition area and circular furnace bottom structure
Resistance, the purpose for reducing furnace bottom and molten bath magnesia carbon brick melting loss can be reached.
Figure of description
Fig. 1 is the spherical bottom construction schematic diagram of the present invention；
Fig. 2 is prior art bottom construction schematic diagram；
1- shaft bricks, 2- molten baths arc-shaped transition brick, 3- furnace bottom arc-shaped transition bricks, 4- trigonums, 5- circle bottom bricks, 6- melt
Pond brick laid on flat, 7- furnace bottoms return flat brick.
Embodiment
The present invention is further described through with reference to Figure of description.
Embodiment 1
As shown in figure 1, a kind of spherical bottom construction of converter of the present invention, it is by shaft brick 1, molten bath arc-shaped transition brick 2, furnace bottom
Arc-shaped transition brick 3, trigonum 4 and circular bottom brick 5 form.Converter bottom is equipped with circular bottom brick 5, furnace wall and round kiln bottom
1 brick 5, shaft brick transitional region there are trigonum 4；Circular bottom brick 5 passes sequentially through furnace bottom arc-shaped transition brick 3, molten bath arc
Shape transitional brick 2 is to shaft region transfers so that circular furnace bottom forms a spherical entirety with molten bath, and total is tight so that three
The area of angular region 4 is greatly decreased, and then it is dangerous to reduce bleed-out；Shaft region is additionally provided with shaft brick 1.
Because the present invention uses spherical structure form, furnace bottom and molten bath area thermal stress obtain scattered decomposition, only in arc mistake
Cross area and less fluctuation occur with furnace bottom, arc-shaped transition area and shaft junction；The present invention passes through arc-shaped transition area and circular furnace bottom
Coordinate, the resistance of motion between molten steel and refractory material, reduces furnace bottom and molten bath magnesia carbon brick melting loss in reduction smelting process.
Above-mentioned shaft brick 1, molten bath arc-shaped transition brick 2, furnace bottom arc-shaped transition brick 3, the material of circular bottom brick 5 be magnesium carbon or
Other material refractory materials, brick design according to converter shell shape and process requirements, can meet it is various in the case of use
Demand, strong applicability.
If trigonum 4 is also present, just it is filled with refractory material so that whole bottom construction is tighter.
Embodiment 2
In conjunction with the embodiments 1, a kind of nominal capacity is 300 tons of spherical bottom constructions of converter, shaft brick 1, molten bath arc-shaped transition
MT-14, MT-16, MT-16, MT-18 magnesia carbon refractory is respectively adopted in brick 2, furnace bottom arc-shaped transition brick 3, circular bottom brick 5
It is made.
After installation, if there is trigonum 4, QD-6 magnesian ramming mass is filled.The length of shaft brick 1 in the present embodiment
Spend for 900mm, thickness 100-150mm；The length of molten bath arc-shaped transition brick 2 is 950-980mm, thickness 100-150mm；Stove
The length of bottom arc-shaped transition brick 3 is 1000-1100mm, thickness 100-150mm；The length of circular bottom brick 5 is 1150mm, thick
Spend for 100-150mm.
Contrasted by above-described embodiment, under equal working condition：Use the spherical bottom construction furnace bottom melting loss speed of the present invention
Degree reduces 40%, and molten bath melting loss speed reduces 60%, effectively blows rate again and improves 30%, reduces potential safety hazard, improve production
Efficiency.
More than, it is only preferable case study on implementation of the invention, but protection scope of the present invention is not limited thereto, and it is any to be familiar with
Those skilled in the art the invention discloses technical scope in, the change or replacement that can readily occur in should all be covered
Within protection scope of the present invention.Therefore, protection scope of the present invention should using protection domain that claim is defined as
It is accurate.
Claims (3)
1. a kind of spherical bottom construction of converter, it is characterised in that it is by shaft brick (1), molten bath arc-shaped transition brick (2), furnace bottom arc
Shape transitional brick (3), trigonum (4) and circular bottom brick (5) composition；Described shaft region is provided with shaft brick (1)；Described
Converter bottom is equipped with circular bottom brick (5), and transitional region there are triangle between furnace wall and circular bottom brick (5), shaft brick (1)
Area (4)；Described circular bottom brick (5) passes sequentially through furnace bottom arc-shaped transition brick (3), molten bath arc-shaped transition brick (2) to shaft area
Domain transition so that circular furnace bottom forms a spherical entirety with molten bath, and trigonum (4) area is greatly decreased.
2. the spherical bottom construction of a kind of converter according to claim 1, it is characterised in that described shaft brick (1), molten bath
Arc-shaped transition brick (2), furnace bottom arc-shaped transition brick (3), circular bottom brick (5) material are magnesium carbon or other material refractory materials, brick
Type designs according to converter shell shape and process requirements.
3. the spherical bottom construction of a kind of converter according to claim 1, it is characterised in that filled out in described trigonum (4)
Filled with refractory material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711383681.4A CN107893144A (en) | 2017-12-20 | 2017-12-20 | A kind of spherical bottom construction of converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711383681.4A CN107893144A (en) | 2017-12-20 | 2017-12-20 | A kind of spherical bottom construction of converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107893144A true CN107893144A (en) | 2018-04-10 |
Family
ID=61808218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711383681.4A Pending CN107893144A (en) | 2017-12-20 | 2017-12-20 | A kind of spherical bottom construction of converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107893144A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111286579A (en) * | 2019-12-31 | 2020-06-16 | 武汉钢铁集团耐火材料有限责任公司 | Seepage-proof steel furnace bottom structure |
| WO2021129613A1 (en) * | 2019-12-24 | 2021-07-01 | 中冶南方工程技术有限公司 | Blast furnace bottom structure |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0570819A (en) * | 1991-09-13 | 1993-03-23 | Nkk Corp | Structure for lining brick on furnace bottom in converter |
| CN104962682A (en) * | 2015-05-25 | 2015-10-07 | 丹东播磨耐火材料有限公司 | Converter spherical rounded-corner elbow furnace-lining structure |
| CN205501341U (en) * | 2016-01-27 | 2016-08-24 | 浙江自立高温科技有限公司 | Converter work lining structure |
| CN106282480A (en) * | 2016-08-30 | 2017-01-04 | 山东钢铁股份有限公司 | Mammoth conveter furnace lining and building method |
| CN106636538A (en) * | 2016-12-30 | 2017-05-10 | 辽宁欣立耐火材料科技集团有限公司 | Masonry method of converter hearth and molten pool part |
| CN207987279U (en) * | 2017-12-20 | 2018-10-19 | 马鞍山钢铁股份有限公司 | A kind of converter spherical shape bottom construction |
-
2017
- 2017-12-20 CN CN201711383681.4A patent/CN107893144A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0570819A (en) * | 1991-09-13 | 1993-03-23 | Nkk Corp | Structure for lining brick on furnace bottom in converter |
| CN104962682A (en) * | 2015-05-25 | 2015-10-07 | 丹东播磨耐火材料有限公司 | Converter spherical rounded-corner elbow furnace-lining structure |
| CN205501341U (en) * | 2016-01-27 | 2016-08-24 | 浙江自立高温科技有限公司 | Converter work lining structure |
| CN106282480A (en) * | 2016-08-30 | 2017-01-04 | 山东钢铁股份有限公司 | Mammoth conveter furnace lining and building method |
| CN106636538A (en) * | 2016-12-30 | 2017-05-10 | 辽宁欣立耐火材料科技集团有限公司 | Masonry method of converter hearth and molten pool part |
| CN207987279U (en) * | 2017-12-20 | 2018-10-19 | 马鞍山钢铁股份有限公司 | A kind of converter spherical shape bottom construction |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021129613A1 (en) * | 2019-12-24 | 2021-07-01 | 中冶南方工程技术有限公司 | Blast furnace bottom structure |
| CN111286579A (en) * | 2019-12-31 | 2020-06-16 | 武汉钢铁集团耐火材料有限责任公司 | Seepage-proof steel furnace bottom structure |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180410 |