CN101492297A - Bottom blowing orienting stephanoporate air brick body for electric furnace and method of producing the same - Google Patents
Bottom blowing orienting stephanoporate air brick body for electric furnace and method of producing the same Download PDFInfo
- Publication number
- CN101492297A CN101492297A CNA2009100104851A CN200910010485A CN101492297A CN 101492297 A CN101492297 A CN 101492297A CN A2009100104851 A CNA2009100104851 A CN A2009100104851A CN 200910010485 A CN200910010485 A CN 200910010485A CN 101492297 A CN101492297 A CN 101492297A
- Authority
- CN
- China
- Prior art keywords
- magnesite clinker
- electrosmelted magnesite
- brick body
- electric furnace
- bottom blowing
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention relates to an electric-furnace bottom-blowing directional porous gas-permeable brick body, and a preparation method thereof. The gas-permeable brick body is prepared from the following raw materials according to the mixture ratio in portion by weight: 1 portion of fused magnesia (particle size is less than or equal to 5.0 mm), 0.8 to 1 portion of fused magnesia (particle size is less than or equal to 3.0 mm), 0.8 to 1 portion of fused magnesia (particle size is less than or equal to 1.0 mm), 0.3 to 0.5 portion of 200-mesh fused magnesia fine powder , 0.8 portion of high-purity graphite, 0.1 to 0.2 portion of additive and 0.15 portion of bonding agent, wherein the bonding agent is phenolic resin, and the additive is prepared from the following components according to the mixture ratio in percentage by weight: 40 to 60 percent of aluminum powder, 20 to 40 percent of aluminum-magnesium alloy powder, 5 to 15 percent of silicon powder and 5 to 15 percent of silicon carbide powder. The gas-permeable brick body prepared by the method has the advantages of high strength, good stability, good safety and capability of meeting the need of electric-furnace steelmaking bottom-blowing systems.
Description
Technical field:
The present invention relates to metallurgical electric furnace makes steel with furnace bottom fire resisting material field, particularly a kind of bottom blowing orienting stephanoporate air brick body for electric furnace and manufacture method thereof.
Background technology:
Gas permeable brick in the bottom blowing system of Electric furnace steel making is the core that realizes electric furnace blowing technology, and its security and economy are to realize the key of effective bottom blowing.Along with the widespread use of various new technologies, the electric furnace liner life-span is more and more longer, has proposed new requirements at the higher level for the development of bottom-blown air brick.There is low, poor stability of life-span in common in the market gas permeable brick, blows out shortcomings such as rate is low, safety coefficient is little.
Summary of the invention:
In order to solve the problem of above-mentioned existence, the invention provides a kind of brick strength height, good stability, can satisfy the electric furnace bottom blowing orienting stephanoporate air brick of the needs of Electric furnace steel making bottom blowing system; The objective of the invention is to be achieved through the following technical solutions: bottom blowing orienting stephanoporate air brick body for electric furnace, make by weight ratio by following raw material:
1 part of the electrosmelted magnesite clinker of≤5.0mm
0.8～1 part of the electrosmelted magnesite clinker of≤3.0mm
0.8～1 part of the electrosmelted magnesite clinker of≤1.0mm
0.3～0.5 part of 200 purpose electrosmelted magnesite clinker fine powder
0.8 part of high purity graphite
0.1～0.2 part of additive
0.15 part of wedding agent,
Wherein wedding agent is a resol, and additive 40～60% aluminium powders, 20～40% aluminium-magnesium alloy powders, 5～15% silica flours, 5～15% carborundum powder proportionings is by weight percentage made.
The manufacture method of bottom blowing orienting stephanoporate air brick body for electric furnace, step is as follows:
(1) with electrosmelted magnesite clinker through the crusher Mechanical Crushing, through 5.0mm, 3.0mm after the 1.0mm screen cloth screening, makes each granularity electrosmelted magnesite clinker of granularity≤5.0mm, getting wherein, a part is processed into 200 purpose electrosmelted magnesite clinker fine powders with ball mill;
(2) by the weight part proportioning in the prescription, take by weighing electrosmelted magnesite clinker, high purity graphite and wedding agent, added the sand mill premix 3～5 minutes, add electrosmelted magnesite clinker fine powder and additive then, wet mixing 5～8 minutes, pug stops batch mixing after having certain temperature;
(3) pug that mixes is put into hopper and carried out ageing mixture 12～24 hours, after ageing mixture is finished material is transferred to another hopper and makes its homogenizing, wait for machine-shaping;
(4) the body thing of will breathing freely is fixed in the mould, and material is contained up to isostatic pressing in the mould uniformly;
(5) molding blank more than 24 hours, is sent into the dry kiln drying 25～35 ℃ of following seasoninies, dry kiln is warming up to 100～120 ℃ according to heating curve, is incubated 10 to 24 hours;
(6) after insulation finishes, naturally cool to room temperature, obtain bottom blowing orienting stephanoporate air brick body for electric furnace.
The invention has the beneficial effects as follows: the bottom blowing orienting stephanoporate air brick body for electric furnace that adopts said structure to make, after being assembled into gas permeable brick, gas flows in metal tube, and resistance is little; Metal tube is welded on the metal air chamber, and resistance to air loss is good; Metal tube has enhancement to refractory materials on every side, makes the incrust and cracking of gas permeable brick; Mobile gas plays the cooling protection effect to refractory materials in the metal tube; Refractory materials plays a protective role to the metal tube that directly contacts with molten steel; It is even that this brick is blown into gas distribution, can significantly reduce the erosion to refractory materials, and work-ing life is higher, helps gas permeable brick is safeguarded.The tolerance regulation range of this gas permeable brick is big, can reach more than 10 times, by most of steel mills are adopted.The security of bottom blowing orienting stephanoporate air brick body for electric furnace of the present invention is good, even under the extreme condition of dying, molten steel can be always not on earth yet, and solidify on air chamber top.
Embodiment,
The invention is further illustrated by the following examples.
Bottom blowing orienting stephanoporate air brick body for electric furnace in process of production, is selected MgO 〉=98%, CaO/SiO for use
2The high purity graphite of big crystallization magnesia of 〉=2 electric smelting and remaining carbon 〉=96%.When raw material pulverizing is sieved, allow in particle or the fine powder above the particle of granularity or fine powder and exist, but the granularity upper limit tails over and is not more than 5% and is qualified particle or fine powder.
Its concrete preparation process is as follows:
The preparation additive: it is back standby as additive to select for use 180kg aluminium powder, 135kg aluminium-magnesium alloy powder, 67.5kg silica flour, 67.5kg carborundum powder to mix.
Respectively through the crusher Mechanical Crushing, through 5.0mm, 3.0mm after the screening of 1.0mm screen cloth, makes each granularity electrosmelted magnesite clinker of granularity≤5.0mm with electrosmelted magnesite clinker (MgO 98%), and getting wherein, a part is processed into 200 purpose fine powders with ball mill;
Press the weight in the table 1, take by weighing electrosmelted magnesite clinker, high purity graphite and wedding agent, added the sand mill premix 3～5 minutes, add electrosmelted magnesite clinker fine powder and additive then, wet mixing 5～8 minutes, pug stops batch mixing after having certain temperature;
The pug that mixes is put into hopper carried out ageing mixture 12～24 hours, after ageing mixture is finished material is transferred to another hopper and makes its homogenizing, wait for machine-shaping.
The body thing of will breathing freely is fixed in the mould, and material is contained up to isostatic pressing in the mould uniformly; Molding blank more than 24 hours, is sent into the dry kiln drying 25～35 ℃ of following seasoninies, and dry kiln is warming up to 100～120 ℃ according to heating curve, is incubated 10 to 24 hours; Insulation naturally cools to room temperature after finishing, and insulation naturally cools to room temperature after finishing, and obtains bottom blowing orienting stephanoporate air brick body for electric furnace.
Finished product test the results are shown in Table 1.
Table 1
To select model for use be the resol of PF5311 to wedding agent in the foregoing description.
Claims (2)
1, bottom blowing orienting stephanoporate air brick body for electric furnace is characterized in that: made by weight ratio by following raw material:
1 part of the electrosmelted magnesite clinker of≤5.0mm
0.8～1 part of the electrosmelted magnesite clinker of≤3.0mm
0.8～1 part of the electrosmelted magnesite clinker of≤1.0mm
0.3～0.5 part of 200 purpose electrosmelted magnesite clinker fine powder
0.8 part of high purity graphite
0.1～0.2 part of additive
0.15 part of wedding agent,
Wherein wedding agent is a resol, and additive 40～60% aluminium powders, 20～40% aluminium-magnesium alloy powders, 5～15% silica flours, 5～15% carborundum powder proportionings is by weight percentage made.
2, the manufacture method of bottom blowing orienting stephanoporate air brick body for electric furnace, it is characterized in that: step is as follows:
(1) with electrosmelted magnesite clinker through the crusher Mechanical Crushing, through 5.0mm, 3.0mm after the 1.0mm screen cloth screening, makes each granularity electrosmelted magnesite clinker of granularity≤5.0mm, getting wherein, a part is processed into 200 purpose electrosmelted magnesite clinker fine powders with ball mill;
(2) by the weight part proportioning in the prescription, take by weighing electrosmelted magnesite clinker, high purity graphite and wedding agent, added the sand mill premix 3～5 minutes, add electrosmelted magnesite clinker fine powder and additive then, wet mixing 5～8 minutes, pug stops batch mixing after having certain temperature;
(3) pug that mixes is put into hopper and carried out ageing mixture 12～24 hours, after ageing mixture is finished material is transferred to another hopper and makes its homogenizing, wait for machine-shaping;
(4) the body thing of will breathing freely is fixed in the mould, and material is contained up to isostatic pressing in the mould uniformly;
(5) molding blank more than 24 hours, is sent into the dry kiln drying 25～35 ℃ of following seasoninies, dry kiln is warming up to 100～120 ℃ according to heating curve, is incubated 10 to 24 hours;
(6) after insulation finishes, naturally cool to room temperature, obtain bottom blowing orienting stephanoporate air brick body for electric furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100104851A CN101492297A (en) | 2009-02-27 | 2009-02-27 | Bottom blowing orienting stephanoporate air brick body for electric furnace and method of producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100104851A CN101492297A (en) | 2009-02-27 | 2009-02-27 | Bottom blowing orienting stephanoporate air brick body for electric furnace and method of producing the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101492297A true CN101492297A (en) | 2009-07-29 |
Family
ID=40923110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100104851A Pending CN101492297A (en) | 2009-02-27 | 2009-02-27 | Bottom blowing orienting stephanoporate air brick body for electric furnace and method of producing the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101492297A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102161589A (en) * | 2010-02-23 | 2011-08-24 | 宝山钢铁股份有限公司 | Conductive magnesia-carbon brick for plasma gun |
| CN102180685A (en) * | 2011-03-10 | 2011-09-14 | 濮阳濮耐高温材料（集团）股份有限公司 | Air-permeable brick for converter |
| CN102260094A (en) * | 2011-07-19 | 2011-11-30 | 武汉科技大学 | Preparation method of diffuse type permeable material |
| CN106216653A (en) * | 2016-09-26 | 2016-12-14 | 北京利尔高温材料股份有限公司 | A kind of long nozzle for continuous casting and manufacture method thereof |
| CN108440009A (en) * | 2018-05-10 | 2018-08-24 | 苏州佳耐材料科技有限公司 | A method of addition silicon carbide whisker prepares high-performance magnesia carbon brick |
| CN109996772A (en) * | 2016-10-27 | 2019-07-09 | 黑崎播磨株式会社 | Magnesia carbon brick and its manufacturing method |
-
2009
- 2009-02-27 CN CNA2009100104851A patent/CN101492297A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102161589A (en) * | 2010-02-23 | 2011-08-24 | 宝山钢铁股份有限公司 | Conductive magnesia-carbon brick for plasma gun |
| CN102180685A (en) * | 2011-03-10 | 2011-09-14 | 濮阳濮耐高温材料（集团）股份有限公司 | Air-permeable brick for converter |
| CN102260094A (en) * | 2011-07-19 | 2011-11-30 | 武汉科技大学 | Preparation method of diffuse type permeable material |
| CN102260094B (en) * | 2011-07-19 | 2013-06-05 | 武汉科技大学 | Preparation method of diffuse type permeable material |
| CN106216653A (en) * | 2016-09-26 | 2016-12-14 | 北京利尔高温材料股份有限公司 | A kind of long nozzle for continuous casting and manufacture method thereof |
| CN109996772A (en) * | 2016-10-27 | 2019-07-09 | 黑崎播磨株式会社 | Magnesia carbon brick and its manufacturing method |
| CN109996772B (en) * | 2016-10-27 | 2021-05-18 | 黑崎播磨株式会社 | Magnesia carbon brick and its making process |
| CN108440009A (en) * | 2018-05-10 | 2018-08-24 | 苏州佳耐材料科技有限公司 | A method of addition silicon carbide whisker prepares high-performance magnesia carbon brick |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101429037B (en) | Aluminum-carbon sliding tile and method of producing the same | |
| CN103880448B (en) | A kind of casting is large-scale from combined silicon carbide product | |
| CN107805059B (en) | Ladle base brick and preparation method thereof | |
| CN107382357A (en) | A kind of ladle bottom blowing composite air bricks disperse material and preparation method thereof | |
| CN101492297A (en) | Bottom blowing orienting stephanoporate air brick body for electric furnace and method of producing the same | |
| CN107352977A (en) | A kind of slag line brick for ladle and preparation method | |
| CN106892647A (en) | A kind of compound magnesia carbon brick and preparation method thereof | |
| CN109750210A (en) | The production method of hypoxemia, hydrogen content potassium steel | |
| CN114180954B (en) | Environment-friendly low-carbon aluminum-magnesium spinel brick and preparation method thereof | |
| CN109020571A (en) | A kind of anti-erosion magnesia carbon brick and preparation method thereof | |
| CN109678479A (en) | The steel ladle bottom argon blowing air brick of smelting high-purity clear height manganese steel | |
| CN104261848A (en) | Chrome-oxide-containing mullite brick and preparation method thereof | |
| CN109579525A (en) | The system for preparing high-purity potassium steel | |
| CN110563449A (en) | Environment-friendly magnesia-carbon gunning mix for RH furnace and preparation method thereof | |
| CN111704474A (en) | Mullite refractory castable for ultrahigh-temperature smelting | |
| CN104446530B (en) | A kind of preparation technology of ladle slag line refractory brick | |
| CN105236997A (en) | Preparation method of low-cost high-aluminum fire-resistant brick | |
| CN113087537B (en) | Steel ladle permanent layer castable containing porous balls | |
| CN1654426A (en) | Amorphous periclase-silicon carbide composite fireproof materials and method for preparing same | |
| CN114409418A (en) | High-strength wear-resistant castable and preparation method and application thereof | |
| CN107043265B (en) | Unfired magnesia-chrome brick for metallurgy and nonferrous smelting furnace and preparation method thereof | |
| CN113292321A (en) | Steel ladle low-carbon working lining brick | |
| CN101475383B (en) | Kiln alkaline brick for producing vanadium nitrogen alloy and method for producing the same | |
| CN110423100B (en) | High-purity magnesia carbon brick added with magnesia carbon ultrafine powder and preparation method thereof | |
| CN112500135A (en) | Magnesium-calcium tundish dry working lining material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090729 |