CN1062313C - Heat-insulation molten steel heat-insulating agent - Google Patents
Heat-insulation molten steel heat-insulating agent Download PDFInfo
- Publication number
- CN1062313C CN1062313C CN96117597A CN96117597A CN1062313C CN 1062313 C CN1062313 C CN 1062313C CN 96117597 A CN96117597 A CN 96117597A CN 96117597 A CN96117597 A CN 96117597A CN 1062313 C CN1062313 C CN 1062313C
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- China
- Prior art keywords
- heat
- molten steel
- insulating agent
- present
- insulation
- 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.)
- Expired - Fee Related
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Classifications
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- 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
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- Ceramic Products (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention relates to a heat insulation molten steel heat insulating agent which is characterized in that power plant flue dust is regarded as base material. Meanwhile, the present invention contains vermiculite, perlite, carbon powder, cryolite, fluorite, etc. and has the advantages that the nuisance power plant dust is regarded as the base material to realize that waste is changed into valuable substance. In addition, the heat insulating agent has little pollution to an environment. The bulk specific gravity of the heat insulating agent is less than 0.6 g/cm<3>, and refractoriness is greater than 1250 DEG C. In addition, a ladle is not stuck, and dregs do not drop. The present invention has good heat insulation performance.
Description
The present invention relates to a kind of heat-insulation molten steel heat-insulating agent that is used for the insulation of ladle molten steel face.
Existing molten steel insulation material adopts carbonization rice husk mostly, can produce a large amount of dust when adding or smash slag, and it is healthy to have a strong impact on work on the spot environment and operator, and also causes on-the-spot electrical equipment short circuit often because of dust pollution; In addition, rice husk is important agricultural and industrial chemicals, uses it for the molten steel insulation raw material and be the waste to efficient resource.
The purpose of this invention is to provide a kind of slag of not being tied up with, not falling, the heat preserving agent composition does not influence the good heat-insulation molten steel heat-insulating agent of heat insulation effect of molten steel composition.
The present invention is achieved in that
A kind of heat-insulation molten steel heat-insulating agent is characterized in that the raw material of this heat preserving agent is formed (weight %) by following composition: flue dust 25%～60%, vermiculite 10%～40%, perlite 10%～25%, carbon dust 5%～10%, sodium aluminum fluoride 3%～7%, fluorite 2%～5%.
Further scheme is that described vermiculite also can be mica or vermiculite and micaceous mixture.
This heat-insulation molten steel heat-insulating agent can be made like this: elder generation makes meal with various raw materials and mixes, and adds suitable quantity of water glass again, and it is caused finely ground particle substance, can use after screening, drying again.
Flue dust of the present invention can be power plant's flue dust, also can be that brick field or other are the flue dust of raw material with the coal.
Advantage of the present invention is to be base-material with public hazards power plant ash, has realized turning waste into wealth, and it is little that this heat preserving agent has environmental pollution simultaneously, and high insulating effect is suitable for characteristics such as steel grade is extensive.
Following table has provided 5 groups of embodiment of the present invention.
| Weight % raw material | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 |
| Power plant's ash | 50 | ?40 | ?30 | ?60 | ?25 |
| Vermiculite | 20 | ?10 | ?25 | ?10 | ?15 |
| Mica | / | ?10 | ?5 | ?/ | ?25 |
| Perlite | 10 | ?20 | ?25 | ?10 | ?25 |
| Carbon dust | 10 | ?10 | ?5 | ?8 | ?5 |
| Sodium aluminum fluoride | 5 | ?5 | ?5 | ?7 | ?3 |
| Fluorite | 5 | ?5 | ?5 | ?5 | ?2 |
Above-mentioned raw materials is mixed, and make the particle of the Φ 3～6mm of drying (moisture content is less than 0.5%), add about 1 kilogram, can realize two good heat insulation effects, and its bulk specific gravity is less than 0.6g/cm by molten steel per ton in the ladle
3, its refractoriness is greater than 1250 ℃.
Claims (2)
1. a heat-insulation molten steel heat-insulating agent is characterized in that the raw material of this heat preserving agent is formed (weight %) by following composition: flue dust 25%～60%, vermiculite 10%～40%, perlite 10%～25%, carbon dust 5%～10%, sodium aluminum fluoride 3%～7%, fluorite 2%～5%.
2. heat-insulation molten steel heat-insulating agent according to claim 1 is characterized in that described vermiculite also can be mica or vermiculite and micaceous mixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96117597A CN1062313C (en) | 1996-06-24 | 1996-06-24 | Heat-insulation molten steel heat-insulating agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96117597A CN1062313C (en) | 1996-06-24 | 1996-06-24 | Heat-insulation molten steel heat-insulating agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1169475A CN1169475A (en) | 1998-01-07 |
| CN1062313C true CN1062313C (en) | 2001-02-21 |
Family
ID=5124434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96117597A Expired - Fee Related CN1062313C (en) | 1996-06-24 | 1996-06-24 | Heat-insulation molten steel heat-insulating agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1062313C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1098130C (en) * | 2000-08-01 | 2003-01-08 | 郭玉华 | Grcular particles of insulating agent for molten steel and its preparing process |
| CN102343425A (en) * | 2010-08-03 | 2012-02-08 | 安徽瑞丝保温材料有限公司 | Granular rice hull ash thermal insulation agent |
| CN103173591B (en) * | 2013-03-07 | 2015-01-21 | 西安建筑科技大学 | Foundry ladle covering agent |
| CN103769556A (en) * | 2014-01-22 | 2014-05-07 | 红安县生伦冶金矿产科技实业有限公司 | Expansion heat-preserving agent |
| CN104004868B (en) * | 2014-05-30 | 2016-05-04 | 西峡县金阳矿冶有限公司 | Environmental protection slag heat preserving agent of smelting iron for height, stove and preparation method thereof |
| CN104313212B (en) * | 2014-09-28 | 2017-02-22 | 四川德胜集团钒钛有限公司 | Molten iron heat preservation agent, preparation method of molten iron heat preservation agent and method for preserving temperature of molten iron |
| CN110039012B (en) * | 2019-04-26 | 2021-10-15 | 西安建筑科技大学 | Cast steel riser covering agent and preparation and use methods thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53100919A (en) * | 1977-02-16 | 1978-09-02 | Nippon Steel Corp | Surface heat insulating agent for molten steel |
| JPH06179059A (en) * | 1992-12-10 | 1994-06-28 | Nippon Steel Corp | Surface insulating material for molten steel |
| CN1124182A (en) * | 1993-12-23 | 1996-06-12 | 徐连世 | Development and production of multifunctional molten iron covering agent |
-
1996
- 1996-06-24 CN CN96117597A patent/CN1062313C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53100919A (en) * | 1977-02-16 | 1978-09-02 | Nippon Steel Corp | Surface heat insulating agent for molten steel |
| JPH06179059A (en) * | 1992-12-10 | 1994-06-28 | Nippon Steel Corp | Surface insulating material for molten steel |
| CN1124182A (en) * | 1993-12-23 | 1996-06-12 | 徐连世 | Development and production of multifunctional molten iron covering agent |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1169475A (en) | 1998-01-07 |
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