CN102417940B - Defoaming and slagging heat insulation agent for blast furnace ironmaking and preparation method thereof - Google Patents
Defoaming and slagging heat insulation agent for blast furnace ironmaking and preparation method thereof Download PDFInfo
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- CN102417940B CN102417940B CN2011102524417A CN201110252441A CN102417940B CN 102417940 B CN102417940 B CN 102417940B CN 2011102524417 A CN2011102524417 A CN 2011102524417A CN 201110252441 A CN201110252441 A CN 201110252441A CN 102417940 B CN102417940 B CN 102417940B
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- massfraction
- graphite
- blast furnace
- furnace ironmaking
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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
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
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- Curing Cements, Concrete, And Artificial Stone (AREA)
- Manufacture Of Iron (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention discloses a defoaming and slagging heat insulation agent for blast furnace ironmaking. The heat insulation agent comprises the following raw materials in parts by weight: 15-20 parts of portland cement clinker, 25-30 parts of graphite, 12-18 parts of fly ash, 20-25 parts of vermiculite, 15-18 parts of sodium carbonate and 1-3 parts of acidized graphite. The defoaming and slagging heat insulation agent has the functions of slagging, defoaming, keeping the temperature, absorbing the inclusions of molten steel and preventing the oxidation of molten steel. After the product is added, the liquidity of iron slag is good, the slag-iron separation effect is good, the recovery rate of molten steel is high and molten steel can not stick to the ladle and wall and can not crust.
Description
Technical field
The present invention relates to a kind of froth breaking slag heat preserving agent, be specifically related to a kind of froth breaking slag heat preserving agent for blast furnace ironmaking.
Background technology
Blast furnace ironmaking inevitably produces a large amount of scums and produces foam, the physical properties that these scums are intrinsic and processing condition have determined that it is very easy to bonding and is deposited in molten iron furrow bank, iron ladle, fish torpedo ladle, the hot metal mixer, cause iron runner to reduce work-ing life, contain the iron container and effectively use volume reducing, the dry slag position is easy to clean not, strengthen labor strength, reduce plant factor, have a strong impact on the direct motion of production technique.
Summary of the invention
The technical problem to be solved in the present invention is that scum and the foam that blast furnace ironmaking produces causes plant factor low, and a kind of froth breaking slag heat preserving agent for blast furnace ironmaking is provided.
Technical scheme of the present invention is: a kind of froth breaking slag heat preserving agent for blast furnace ironmaking, it is made by the raw material of following portions by weight: Portland clinker 15-20, graphite 25-30, flyash 12-18, vermiculite 20-25, soda ash 15-18, acidifying graphite 1-3.
Be used for the froth breaking slag heat preserving agent of blast furnace ironmaking, preferably made by the raw material of following portions by weight: Portland clinker 17, graphite 28, flyash 15, vermiculite 22, soda ash 16, acidifying graphite 2.
The massfraction of CaO is 45-60% in the described Portland clinker, and the massfraction of MgO is 3.7%, SO
3Massfraction be 2.2%, SiO
2Massfraction be 25-35%; The massfraction of C is more than 85% in the described graphite; Al in the described flyash
2O
3Massfraction be 3.4-6.5%, the massfraction of CaO is 3-15%, SiO
2Massfraction be 11.4-15.6%, the massfraction of C is 5-15%; SiO in the described vermiculite
2Massfraction be 40-60%, the massfraction of MgO is 3-8%, Fe
2O
3Massfraction be 3-6%, Al
2O
3Massfraction be 15-23%; Na in the described soda ash
2CO
3Massfraction be more than 99.8%; The massfraction of C is 92% in the acidifying graphite.
Be used for the preparation method of the froth breaking slag heat preserving agent of blast furnace ironmaking, with raw material powder process, the granularity of powder is the 100-150 order, after mixing, uses disk pelletizing machine or extruding nodulizer to granulate, and then toasts under 250-280 ℃ condition.
The invention has the beneficial effects as follows: having of the present invention slag, froth breaking, insulation, absorption molten iron are mingled with, prevent the molten iron oxidation function, add this product after, scum good fluidity, slag iron separator well, the molten iron rate of recovery is high, sticking bag, sticking wall, does not crust.Can reduce the iron-holder in the slag, reduce the stokehold slag accident of setting off firecrackers, eliminate security incident; Fast Slag Melting reduces the sticking bag of scum wall phenomenon, enlarges the useful volume of container; Good heat insulating, the molten iron cooling extent is little, does not crust; Can absorb rapidly the objectionable impurities in the molten iron, improve the purity of molten iron; Melting process reduces the erosion to cylinder-packing, improves iron ladle (fish torpedo ladle) work-ing life.
Embodiment
Embodiment 1
A kind of froth breaking slag heat preserving agent for blast furnace ironmaking, it is made by the raw material of following portions by weight: Portland clinker 15 kg, graphite 25 kg, flyash 12 kg, vermiculite 20 kg, soda ash 15 kg, acidifying graphite 1 kg, the massfraction of CaO is 60%, SiO in the described Portland clinker
2Massfraction be that the massfraction of 25%, MgO is 3.7%, SO
3Massfraction be 2.2%; The massfraction of C is 85% in the described graphite; Al in the described flyash
2O
3Massfraction be that the massfraction of 3.4%, CaO is 3%, SiO
2Massfraction be that the massfraction of 11.4%, C is 5%; SiO in the described vermiculite
2Massfraction be that the massfraction of 40%, MgO is 3%, Fe
2O
3Massfraction be 3%, Al
2O
3Massfraction be 15%; Na in the described soda ash
2CO
3Massfraction be 99.8%; The massfraction of C is 92% in the acidifying graphite.
The preparation method who is used for the froth breaking slag heat preserving agent of blast furnace ironmaking: with raw material powder process, the granularity of powder is 150 orders, after mixing, uses disk pelletizing mechanism grain, then toasts under 280 ℃ condition.
Embodiment 2
A kind of froth breaking slag heat preserving agent for blast furnace ironmaking, it is made by the raw material of following portions by weight: Portland clinker 20 kg, graphite 30 kg, flyash 18 kg, vermiculite 25 kg, soda ash 18 kg, acidifying graphite 1-3 kg, the massfraction of CaO is 45% SiO in the described Portland clinker
2Massfraction be that the massfraction of 25%, MgO is 3.7%, SO
3Massfraction be 2.2%; The massfraction of C is more than 85% in the described graphite; Al in the described flyash
2O
3Massfraction be that the massfraction of 6.5%, CaO is 15%, SiO
2Massfraction be that the massfraction of 15.6%, C is 15%; SiO in the described vermiculite
2Massfraction be that the massfraction of 60%, MgO is 8%, Fe
2O
3Massfraction be 6%, Al
2O
3Massfraction be 23%; Na in the described soda ash
2CO
3Massfraction be more than 99.8%; The massfraction of C is 92% in the acidifying graphite.
The preparation method who is used for the froth breaking slag heat preserving agent of blast furnace ironmaking: with raw material powder process, the granularity of powder is 100 orders, after mixing, uses the extruding nodulizer to granulate, and then toasts under 280 ℃ condition.
Embodiment 3
A kind of froth breaking slag heat preserving agent for blast furnace ironmaking, it is made by the raw material of following portions by weight: Portland clinker 16 kg, graphite 28 kg, flyash 16 kg, vermiculite 22 kg, soda ash 16 kg, acidifying graphite 2 kg, the massfraction of CaO is 50%, SiO in the described Portland clinker
2Massfraction be that the massfraction of 30%, MgO is 3%, SO
3Massfraction be 2%; The massfraction of C is more than 85% in the described graphite; Al in the described flyash
2O
3Massfraction be that the massfraction of 5%, CaO is 10%, SiO
2Massfraction be that the massfraction of 14%, C is 10%; SiO in the described vermiculite
2Massfraction be that the massfraction of 50%, MgO is 6%, Fe
2O
3Massfraction be 5%, Al
2O
3Massfraction be 20%; Na in the described soda ash
2CO
3Massfraction be 99.8%; The massfraction of C is 92% in the acidifying graphite.
The preparation method who is used for the froth breaking slag heat preserving agent of blast furnace ironmaking: with raw material powder process, the granularity of powder is 120 orders, after mixing, uses the extruding nodulizer to granulate, and then toasts under 250-280 ℃ condition.
Embodiment 4
A kind of froth breaking slag heat preserving agent for blast furnace ironmaking, it is made by the raw material of following portions by weight: Portland clinker 17 kg, graphite 28 kg, flyash 15 kg, vermiculite 22 kg, soda ash 16 kg, acidifying graphite 2 kg, the massfraction of CaO is 45-60% in the described Portland clinker, SiO
2Massfraction be 25-35%, the massfraction of MgO is 3.7%, SO
3Massfraction be 2.2%; The massfraction of C is more than 85% in the described graphite; Al in the described flyash
2O
3Massfraction be 3.4-6.5%, the massfraction of CaO is 3-15%, SiO
2Massfraction be 11.4-15.6%, the massfraction of C is 5-15%; SiO in the described vermiculite
2Massfraction be 40-60%, the massfraction of MgO is 3-8%, Fe
2O
3Massfraction be 3-6%, Al
2O
3Massfraction be 15-23%; Na in the described soda ash
2CO
3Massfraction be more than 99.8%; The massfraction of C is 92% in the acidifying graphite.
The preparation method who is used for the froth breaking slag heat preserving agent of blast furnace ironmaking: with raw material powder process, the granularity of powder is the 100-150 order, after mixing, uses disk pelletizing machine or extruding nodulizer to granulate, and then toasts under 250-280 ℃ condition.
Among the present invention, the change slag principle of froth breaking slag heat preserving agent: 1. it is comprised of the material of some low melting points and energy dissolved solids oxide compound, is molten into liquid in molten iron, and with the dry slag dissolving, makes dry slag break away from wall.2. at high temperature, about composition and dry slag generation chemical reaction, generate low melting component in the dissolving agent, break away from wall of container.3. with the lower basic slag system of a kind of fusing point, add rare earth element or high reactivity fine aluminium and other alloying element of 1-10%, can effectively dilute and melt the vanadium titanium slag of height, can effectively reduce thickness and the molten iron cooling of clinker.4. adopted the function little, that have expansion of absorbing heat, carbon content is lower and have the insulating covering agent of heating function and cover.
The physical and chemical index of product of the present invention
| Project | SiO 2% | CaO% | Al 2O 3% | Fe 2O 3% | MgO% | C% | H 2O% |
| Index | 30-40 | 8-15 | 10-15 | <3 | <5 | 20-30 | <1.0 |
Claims (4)
1. froth breaking slag heat preserving agent that is used for blast furnace ironmaking, it is characterized in that it is made by the raw material of following portions by weight: Portland clinker 15-20, graphite 25-30, flyash 12-18, vermiculite 20-25, soda ash 15-18, acidifying graphite 1-3, the massfraction of CaO is 45-60% in the described Portland clinker, the massfraction of MgO is 3.7%, SO
3Massfraction be 2.2%, SiO
2Massfraction be 25-35%; The massfraction of C is more than 85% in the described graphite; Al in the described flyash
2O
3Massfraction be 3.4-6.5%, the massfraction of CaO is 3-15%, SiO
2Massfraction be 11.4-15.6%, the massfraction of C is 5-15%; SiO in the described vermiculite
2Massfraction be 40-60%, the massfraction of MgO is 3-8%, Fe
2O
3Massfraction be 3-6%, Al
2O
3Massfraction be 15-23%; Na in the described soda ash
2CO
3Massfraction be more than 99.8%; The massfraction of C is 92% in the acidifying graphite.
2. the froth breaking slag heat preserving agent for blast furnace ironmaking according to claim 1 is characterized in that it is made by the raw material of following portions by weight: Portland clinker 17, graphite 28, flyash 15, vermiculite 22, soda ash 16, acidifying graphite 2.
3. the preparation method of the froth breaking slag heat preserving agent for blast furnace ironmaking as claimed in claim 1 or 2, it is characterized in that: with raw material powder process, the granularity of powder is the 100-150 order, after mixing, granulates, and then toasts under 250-280 ℃ condition.
4. the preparation method of the froth breaking slag heat preserving agent for blast furnace ironmaking according to claim 3, it is characterized in that: disk pelletizing machine or extruding nodulizer are used in described granulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102524417A CN102417940B (en) | 2011-08-30 | 2011-08-30 | Defoaming and slagging heat insulation agent for blast furnace ironmaking and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102524417A CN102417940B (en) | 2011-08-30 | 2011-08-30 | Defoaming and slagging heat insulation agent for blast furnace ironmaking and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102417940A CN102417940A (en) | 2012-04-18 |
| CN102417940B true CN102417940B (en) | 2013-03-13 |
Family
ID=45942584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102524417A Expired - Fee Related CN102417940B (en) | 2011-08-30 | 2011-08-30 | Defoaming and slagging heat insulation agent for blast furnace ironmaking and preparation method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN102417940B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108165767B (en) * | 2017-12-28 | 2019-11-15 | 中国地质科学院矿产综合利用研究所 | Method for jointly leaching spodumene based on microwave and pressure field |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08506144A (en) * | 1993-02-05 | 1996-07-02 | ラポート グループ オーストラリア リミティド | Slag defoaming composite material |
| CN1343793A (en) * | 2000-09-21 | 2002-04-10 | 马鞍山市八达冶炼材料有限公司 | Slag decomposing agent for smelting steel |
| CN101082072A (en) * | 2006-05-31 | 2007-12-05 | 阳泉市太行电熔镁有限公司 | New melting agent for steelmaking furnace slag |
| CN100503852C (en) * | 2006-10-25 | 2009-06-24 | 张清学 | Steelsmelting dust-mud pelletizing slag-melting agent compounding method |
| CN101016578B (en) * | 2007-02-14 | 2010-05-19 | 于世发 | Molten steel purifying slag agent produced by blast furnace fusion method |
| CN101045949A (en) * | 2007-04-13 | 2007-10-03 | 郎雪 | No-fluorine composite slag melting agent for converter steelmaking and its production process |
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2011
- 2011-08-30 CN CN2011102524417A patent/CN102417940B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN102417940A (en) | 2012-04-18 |
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Granted publication date: 20130313 Termination date: 20130830 |