CN105642850B - A kind of ASP medium carbon steel continuous crystallizer protecting slag and preparation method thereof - Google Patents
A kind of ASP medium carbon steel continuous crystallizer protecting slag and preparation method thereof Download PDFInfo
- Publication number
- CN105642850B CN105642850B CN201610131980.8A CN201610131980A CN105642850B CN 105642850 B CN105642850 B CN 105642850B CN 201610131980 A CN201610131980 A CN 201610131980A CN 105642850 B CN105642850 B CN 105642850B
- Authority
- CN
- China
- Prior art keywords
- slag
- adhesive
- melt
- carbon steel
- drier
- 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.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
- B22D11/11—Treating the molten metal
- B22D11/111—Treating the molten metal by using protecting powders
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Ceramic Products (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention discloses a kind of ASP medium carbon steel continuous crystallizer protecting slag and preparation method thereof.It is as follows including raw material and its weight percentage：Glass dust：0% ~ 6%, pre- melt：10% ~ 30%, wollastonite：10% ~ 30%, fluorite：10.5% ~ 15.5%, white alkali：4% ~ 8%, carbon black：4% ~ 8%, graphite：4.5% ~ 8.5%, sodium fluoride：0% ~ 5%, manganese carbonate：5% ~ 8%, magnesia：4% ~ 9%, aluminium vanadine：8% ~ 12%, ice crystal：0.5% ~ 3%, adhesive：1% ~ 3% and water reducer：0.3%~1%.Proportion optimizing in the production decision of the present invention, while ensureing heat insulation effect, it is ensured that certain burn-off rate, so as to make it have certain liquid slag layer thickness, make covering slag equably be consumed, so that it is guaranteed that continuous casting process direct motion, produces high-quality strand.
Description
Technical field
The present invention relates to a kind of covering slag, more particularly, to a kind of ASP medium carbon steel continuous crystallizer protecting slag and its system
Preparation Method.
Background technology
With the progress of science and technology, continuous casting technology is progressively to move to maturity.It is however, continuous complete due to steel-smelting technology
It is kind, tempo increase is made steel, the increase of stove tap, compared with making steel with follow-up steel rolling ability, the production capacity of conticaster is still
It is the restricted link in whole steel manufacture process.Therefore, in the last few years, domestic and international iron and steel enterprise generally uses continuous casting and rolling
Technology.Continuous casting and rolling due to its technique is simplified, with short production cycle, lumber recovery is higher, suitable for production product with heat for cold etc., receive
Extensive favor, has vast potential for future development.But high pulling rate technology also brings many new problems to continuous casting process, most heavy
What is wanted is exactly that with the increase of casting speed, continuous casting functional protective material relative consumption is reduced, and can cause crystallizer wall with coagulating
Gu lubrication between green shell is uneven, heat transfer is uneven, and then causes surface defect of bloom, or even bonding steel leakage occurs, especially
It is in unstable continuous casting period.
In casting process, can covering slag play due effect, depend primarily on the performance and ratio of be incorporated raw material
Example etc..The selection of covering slag slag charge has a major impact to mold flux property.Following several principles should be followed by being typically chosen raw material：
1. the chemical composition of raw material should be stablized as far as possible, and should be as close possible to the chemical constituent scope of the covering slag of selection.2. basis
The species of raw material should not be excessive, to avoid preparation process excessively complicated, beneficial to the performance of adjustment bits.3. bulk density is small, tool
There is good heat-insulating property.4. there are the physical and chemical performances such as suitable melting temperature, viscosity, basicity.5.Al2O3Content is as low as possible, with
Ensure the ability that covering slag absorbs field trash.6. molten steel should not be polluted, S, P, C, Fe content are as low as possible.
The viscosity of continuous casting covering slag, melt cinder is included to the metallurgical behavior occurred in crystallizer and flows into and consumes, lubricate, be mingled with
Thing absorption etc. produces material impact.Generally, covering slag require certain heat transfer property, good heat-insulating property,
Nonmetallic absorption well, good lubrication and stable performance.When covering slag viscosity is too high, it is difficult to flow into molten steel meniscus and knot
Gap between brilliant device, covering slag slag film is thin and uneven, and consumption is small, easily causes lubrication, conducts heat bad, green shell can be caused to produce
Raw longitudinal crack.When covering slag viscosity is too low, flux film can be made blocked up, slag non-uniform film thickness, lubrication and heat transfer can equally occur
Inequality, lobe increase.
Chinese patent CN103785805A disclose a kind of square billet middle low carbon steel high intensity continuous crystallizer protecting slag and its
Production method, the protection slag ingredient（Unit：wt%）Including：CaO 29 ~ 32, SiO228 ~ 31, MgO 1.6 ~ 2.2, Fe2O3
1.6 ~ 2.5, Al2O3 6.5 ~ 8.5, Na2O 4.5 ~ 6.5, F 4.5 ~ 6.5, CGu11.5~13.5；This method production cost is low, and can
The quality and yellow phosphorus waste slag utilization rate of covering slag are improved, after production, strand one-level qualification rate improves 2.4 ~ 2.9% on year-on-year basis.In
State patent CN103785806A discloses a kind of slab high intensity continuous crystallizer protecting slag and its production method, the covering slag
Composition（Unit：wt%）Including：SiO226-29, CaO 32-36, MgO 1.5-2.5, Al2O33-5, Na2O 8-10, F 8.5-
10.5 CGu3-5, Fe2O3≤1.5；This method production cost is low, and and can improves the quality and yellow phosphorus waste slag utilization rate of covering slag,
Big to ambient contribution, after testing, strand one-level qualification rate improves 2.2-2.7% on year-on-year basis.
But the production of above-mentioned patent high intensity continuous crystallizer protecting slag with wollastonite, bauxite etc. for base-material, with
Fluorite, soda ash etc. are flux, with graphite, carbon black etc. for carbonaceous material, then with sanlose（CMC）Or dextrin is
Adhesive, but scattered impaired performance when CMC is more than 300 DEG C, and normal granulation tower tower temperature is 700 DEG C or so, due to product
Granule strength is in 260 ~ 290Pa, and product particle intensity difference causes product balling ratio, and product balling ratio is low 85% or so, dust compared with
More, a part of dust is reclaimed by dedusting, and a part of dust flies away in atmosphere, causes environmental pollution.
The content of the invention
In view of this, the purpose of the present invention is in view of the shortcomings of the prior art, there is provided a kind of ASP medium carbon steel continuous casting crystallining
Device covering slag and preparation method thereof, improves viscosity, improves heat transfer and the lubricant effect of covering slag, reduces steel surface defect.
To reach above-mentioned purpose, the present invention uses following technical scheme：
A kind of ASP medium carbon steel continuous crystallizer protecting slag, including raw material and its weight percentage it is as follows：Glass dust：
0% ~ 6%, pre- melt：10% ~ 30%, wollastonite：10% ~ 30%, fluorite：10.5% ~ 15.5%, white alkali：4% ~ 8%, carbon black：4% ~ 8%, stone
Ink：4.5% ~ 8.5%, sodium fluoride：0% ~ 5%, manganese carbonate：5% ~ 8%, magnesia：4% ~ 9%, aluminium vanadine：8% ~ 12%, ice crystal：0.5%~
3%, adhesive：1% ~ 3% and water reducer：0.3%~1%.
Preferably, a kind of ASP medium carbon steel continuous crystallizer protecting slag, including raw material and its weight percentage it is as follows：
Glass dust：0% ~ 6%, pre- melt：10% ~ 30%, wollastonite：10% ~ 30%, fluorite：10.5% ~ 15.5%, white alkali：4% ~ 8%, carbon black：
6%, graphite：6.5%, sodium fluoride：0% ~ 5%, manganese carbonate：5% ~ 8%, magnesia：4% ~ 9%, aluminium vanadine：8% ~ 12%, ice crystal：0.5%~
3%, adhesive：1% ~ 3% and water reducer：0.3%~1%.
Preferably, described adhesive is the mixture of oxidized starch adhesive and drier, the oxidized starch adhesive
Weight ratio with drier is：100:1~5.
Preferably, the drier is organic drier polyvinyl alcohol.
Preferably, the water reducer is polycarboxylic acid water reducing agent.
Preferably, the fusion temperature of the covering slag：1050 DEG C ~ 1100 DEG C, the viscosity at 1300 DEG C is：0.25~0.4
Pa.s, the basicity of the covering slag（CaO/SiO2）For 0.7~0.8.
Its preparation method, including step are as follows：1) by glass dust, pre- melt, wollastonite, fluorite, white alkali, sodium fluoride, carbon
Sour manganese, magnesia, aluminium vanadine and ice crystal are crushed and are well mixed；2) to step 1）In mixed material add adhesive, water reducer,
Carbon black and graphite enter the fusing of slugging stove, obtain melt cinder；3）Melt cinder is through Water Quenching, drying, crushing；4) remix, mist projection granulating i.e.
Can.
It should be noted that the viscosity of continuous casting covering slag, the metallurgical behavior occurred in crystallizer is included melt cinder flow into and
Consumption, lubrication, field trash absorption etc. produce material impact.Generally, covering slag requires certain heat transfer property, good
Heat-insulating property well, good nonmetallic absorption, good lubrication and stable performance.When covering slag viscosity is too high, it is difficult to flow into
Gap between molten steel meniscus and crystallizer, covering slag slag film is thin and uneven, and consumption is small, easily causes lubrication, heat transfer not
It is good, green shell can be caused to produce longitudinal crack.When covering slag viscosity is too low, flux film can be made blocked up, slag film thickness can equally occur
Inequality, lubrication and heat transfer are uneven, lobe increase.
The beneficial effects of the invention are as follows：
1. proportion optimizing in the production decision of the present invention, while ensureing heat insulation effect, it is ensured that certain burn-off rate, from
And certain liquid slag layer thickness is made it have, covering slag is equably consumed, so that it is guaranteed that continuous casting process direct motion, is produced excellent
The strand of matter.
2. add but work as in covering slag and be incorporated a small amount of Li2O、B2O3When, the viscosity of covering slag is with Al in slag2O3Content is increased
Amplitude of variation is smaller, adds a small amount of Li2O、B2O3The viscosity of covering slag can suitably be adjusted.
3. reducing the quantity of hydroxyl in molecule after oxidized starch adhesive starch is oxidized, the carboxyl in starch is improved
Content and carbonyl content, the quantity of hydroxyl in molecule is reduced after starch is oxidized, with the increase of carboxyl-content, freeze-thaw stability
Property it is more and more stronger, gel strength reduces, and so as to reduce the degree of polymerization of starch, adds the water solubility of starch, cohesive force and steady
It is qualitative.Contain substantial amounts of secondary hydroxyl and a small amount of acetoxyl group in polyvinyl alcohol molecule structure, utilize polyvinyl alcohol and starch point
Sub " grafting ", polyvinyl alcohol is the unique polyhydroxylated polymer that can be dissolved in water, there is excellent film forming and an emulsibility, and glue-line is strong
Degree is high, good toughness.Its solution has strong cementitiousness to porous and water imbibition surface, so so obtained adhesive has more
The advantages that property, is frozen in cementability well, mobility and anti-freezing.
4. the water-reducing rate of poly carboxylic acid series water reducer is high, especially by high-performance water reducing agent and large dosage active fine additive two
Person is compound, make material service behaviour obtain it is larger improve, advantageously reduce work(construction costs, improve engineering matter
Amount.
Embodiment
Embodiment 1
A kind of ASP medium carbon steel continuous crystallizer protecting slag, including raw material and its weight percentage it is as follows：Glass dust：
6%, pre- melt：12%, wollastonite：11.5%, fluorite：10.5%, white alkali：7%, carbon black：5.5%, graphite：6.5%, sodium fluoride：5%,
Manganese carbonate：8%, magnesia：9%, aluminium vanadine：12%, ice crystal：3%, adhesive：3%, water reducer：1%.Wherein, adhesive is oxidation
The mixture of amylum adhesive and drier, drier are organic drier polyvinyl alcohol, oxidized starch adhesive and polyethylene
The weight ratio of alcohol is：100:1, water reducer is polycarboxylic acid water reducing agent.
Its preparation method, including step are as follows：1) by glass dust, pre- melt, wollastonite, fluorite, white alkali, sodium fluoride, carbon
Sour manganese, magnesia, aluminium vanadine and ice crystal crush the powder of 200 ~ 300 mesh, and are well mixed；2) to step 1）Add in mixed material
Enter adhesive, water reducer, carbon black and graphite and enter the fusing of slugging stove, obtain melt cinder；3）Melt cinder through Water Quenching, 500 ~ 800 DEG C of dryings,
Crush；4) remix, mist projection granulating.
The fusion temperature of the covering slag：1050 DEG C, the viscosity at 1300 DEG C is：0.25Pa.s, the basicity of covering slag
（CaO/SiO2）For 0.7.This ASP medium carbon steel is used for A steel mills, surface quality defect 0.36% with continuous casting covering slag.
Embodiment 2
A kind of ASP medium carbon steel continuous crystallizer protecting slag, including raw material and its weight percentage it is as follows：Glass dust：
1%, pre- melt：25%, wollastonite：25%, fluorite：11%, white alkali：8%, carbon black：4%, graphite：4.5%, sodium fluoride：1%, manganese carbonate：
1%, magnesia：4%, aluminium vanadine：8%, ice crystal：0.5%, adhesive：1%, water reducer：0.5%, Li2O 0.5% and B2O35%.Bonding
Agent is oxidized starch.The mixture of adhesive and drier, drier are organic drier polyvinyl alcohol, oxidized starch adhesive
Weight ratio with polyvinyl alcohol is：100:2, aqua is polycarboxylic acid water reducing agent.
Its preparation method, including step are as follows：1) by glass dust, pre- melt, wollastonite, fluorite, white alkali, sodium fluoride, carbon
Sour manganese, magnesia, aluminium vanadine and ice crystal crush the powder of 200 ~ 300 mesh, and are well mixed；2) to step 1）Add in mixed material
Enter adhesive, water reducer, carbon black and graphite and enter the fusing of slugging stove, obtain melt cinder；3）Melt cinder through Water Quenching, 500 ~ 800 DEG C of dryings,
Crush；4) remix, mist projection granulating.
The fusion temperature of the covering slag：1060 DEG C, the viscosity at 1300 DEG C is：0.30 Pa.s, the basicity of covering slag
（CaO/SiO2）For 0.75.This ASP medium carbon steel is used for A steel mills, surface quality defect 0.13% with continuous casting covering slag.
Embodiment 3
A kind of ASP medium carbon steel continuous crystallizer protecting slag, including raw material and its weight percentage it is as follows：Pre- melt：
29%, wollastonite：20%, fluorite：10.5%, white alkali：6%, carbon black：5%, graphite：5%, sodium fluoride：5%, manganese carbonate：5%, magnesia：
4%, aluminium vanadine：8%, ice crystal：0.5%, adhesive：1%, water reducer：1%.Wherein, adhesive is oxidized starch adhesive with urging
The mixture of dry agent, drier are organic drier polyvinyl alcohol, and the weight ratio of oxidized starch adhesive and polyvinyl alcohol is：
100:3, water reducer is polycarboxylic acid water reducing agent.
Its preparation method, including step are as follows：1) by glass dust, pre- melt, wollastonite, fluorite, white alkali, sodium fluoride, carbon
Sour manganese, magnesia, aluminium vanadine and ice crystal crush the powder of 200 ~ 300 mesh, and are well mixed；2) to step 1）Add in mixed material
Enter adhesive, water reducer, carbon black and graphite and enter the fusing of slugging stove, obtain melt cinder；3）Melt cinder through Water Quenching, 500 ~ 800 DEG C of dryings,
Crush；4) remix, mist projection granulating.
The fusion temperature of the covering slag：1100 DEG C, the viscosity at 1300 DEG C is：0.4 Pa.s, the basicity of covering slag
（CaO/SiO2）For 0.7.This ASP medium carbon steel is used for A steel mills, surface quality defect 0.33% with continuous casting covering slag.
Embodiment 4
A kind of ASP medium carbon steel continuous crystallizer protecting slag, including raw material and its weight percentage it is as follows：Glass dust：
4%, pre- melt：23%, wollastonite：27%, fluorite：13.5%, white alkali：4%, carbon black：4%, graphite：4.5%, manganese carbonate：5%, magnesia：
4%, aluminium vanadine：8%, ice crystal：1%, adhesive：1.7%, water reducer：0.3%.Wherein, adhesive be oxidized starch adhesive with
The mixture of drier, drier are organic drier polyvinyl alcohol, and the weight ratio of oxidized starch adhesive and polyvinyl alcohol is：
100:4, water reducer is polycarboxylic acid water reducing agent.
Its preparation method, including step are as follows：1) by glass dust, pre- melt, wollastonite, fluorite, white alkali, sodium fluoride, carbon
Sour manganese, magnesia, aluminium vanadine and ice crystal crush the powder of 200 ~ 300 mesh, and are well mixed；2) to step 1）Add in mixed material
Enter adhesive, water reducer, carbon black and graphite and enter the fusing of slugging stove, obtain melt cinder；3）Melt cinder through Water Quenching, 500 ~ 800 DEG C of dryings,
Crush；4) remix, mist projection granulating.
The fusion temperature of the covering slag：1050 DEG C, the viscosity at 1300 DEG C is：0.25 Pa.s, the basicity of covering slag
（CaO/SiO2）For 0.8.This ASP medium carbon steel is used for A steel mills, surface quality defect 0.35% with continuous casting covering slag.
Embodiment 5
A kind of ASP medium carbon steel continuous crystallizer protecting slag, including raw material and its weight percentage it is as follows：Glass dust：
2%, pre- melt：15%, wollastonite：13%, fluorite：10.5%, white alkali：8%, carbon black：8%, graphite：8.5%, sodium fluoride：5%, carbonic acid
Manganese：8%, magnesia：7.5%, aluminium vanadine：9%, ice crystal：2.5%, adhesive：2%, water reducer：1%.Wherein, adhesive forms sediment for oxidation
The mixture of powder adhesive and drier, drier are organic drier polyvinyl alcohol, oxidized starch adhesive and polyvinyl alcohol
Weight ratio be：100:5, water reducer is polycarboxylic acid water reducing agent.
Its preparation method, including step are as follows：1) by glass dust, pre- melt, wollastonite, fluorite, white alkali, sodium fluoride, carbon
Sour manganese, magnesia, aluminium vanadine and ice crystal crush the powder of 200 ~ 300 mesh, and are well mixed；2) to step 1）Add in mixed material
Enter adhesive, water reducer, carbon black and graphite and enter the fusing of slugging stove, obtain melt cinder；3）Melt cinder through Water Quenching, 500 ~ 800 DEG C of dryings,
Crush；4) remix, mist projection granulating.
The fusion temperature of the covering slag：1070 DEG C, the viscosity at 1300 DEG C is：0.4 Pa.s, protect basicity of slag（CaO/
SiO2）For 0.8.This ASP medium carbon steel is used for A steel mills, surface quality defect 0.40% with continuous casting covering slag.
Embodiment 6
A kind of ASP medium carbon steel continuous crystallizer protecting slag, including raw material and its weight percentage it is as follows：Glass dust：
5%, pre- melt：25%, wollastonite：10%, fluorite：12.5%, white alkali：7%, carbon black：6%, graphite：4.5%, sodium fluoride：2%, carbonic acid
Manganese：7%, magnesia：6%, aluminium vanadine：10%, ice crystal：2%, adhesive：2%, water reducer：1%.Wherein, adhesive is oxidized starch
The mixture of adhesive and drier, drier are organic drier polyvinyl alcohol, oxidized starch adhesive and polyvinyl alcohol
Weight ratio is：100:1, water reducer is polycarboxylic acid water reducing agent.
Its preparation method, including step are as follows：1) by glass dust, pre- melt, wollastonite, fluorite, white alkali, sodium fluoride, carbon
Sour manganese, magnesia, aluminium vanadine and ice crystal crush the powder of 200 ~ 300 mesh, and are well mixed；2) to step 1）Add in mixed material
Enter adhesive, water reducer, carbon black and graphite and enter the fusing of slugging stove, obtain melt cinder；3）Melt cinder through Water Quenching, 500 ~ 800 DEG C of dryings,
Crush；4) remix, mist projection granulating.
The fusion temperature of the covering slag：1080 DEG C, the viscosity at 1300 DEG C is：0.33Pa.s, the basicity of covering slag
（CaO/SiO2）For 0.8.This ASP medium carbon steel is used for A steel mills, surface quality defect 0.33% with continuous casting covering slag.
Embodiment 7
A kind of ASP medium carbon steel continuous crystallizer protecting slag, including raw material and its weight percentage it is as follows：Glass dust：
3%, pre- melt：15%, wollastonite：15%, fluorite：15%, white alkali：5%, carbon black：6%, graphite：6%, sodium fluoride：5%, manganese carbonate：
6%, magnesia：7%, aluminium vanadine：10%, ice crystal：3%, adhesive：3%, water reducer：1%.Wherein, adhesive bonds for oxidized starch
Agent and the mixture of drier, drier are the weight of organic drier polyvinyl alcohol, oxidized starch adhesive and polyvinyl alcohol
Than for：100:2, water reducer is polycarboxylic acid water reducing agent.
Its preparation method, including step are as follows：1) by glass dust, pre- melt, wollastonite, fluorite, white alkali, sodium fluoride, carbon
Sour manganese, magnesia, aluminium vanadine and ice crystal crush the powder of 200 ~ 300 mesh, and are well mixed；2) to step 1）Add in mixed material
Enter adhesive, water reducer, carbon black and graphite and enter the fusing of slugging stove, obtain melt cinder；3）Melt cinder through Water Quenching, 500 ~ 800 DEG C of dryings,
Crush；4) remix, mist projection granulating.
The fusion temperature of the covering slag：1090 DEG C, the viscosity at 1300 DEG C is：0.30 Pa.s, the basicity of covering slag
（CaO/SiO2）For 0.7.This ASP medium carbon steel is used for A steel mills, surface quality defect 0.30% with continuous casting covering slag.
Embodiment 8
A kind of ASP medium carbon steel continuous crystallizer protecting slag, including raw material and its weight percentage it is as follows：Glass dust：
6%, pre- melt：10%, wollastonite：20%, fluorite：10.5%, white alkali：4%, carbon black：4%, graphite：8.5%, sodium fluoride：5%, carbonic acid
Manganese：8%, magnesia：5%, aluminium vanadine：12%, ice crystal：3%, adhesive：3%, water reducer：1%.Wherein, adhesive is oxidized starch
The mixture of adhesive and drier, drier are organic drier polyvinyl alcohol, oxidized starch adhesive and polyvinyl alcohol
Weight ratio is：100:5, water reducer is polycarboxylic acid water reducing agent.
Its preparation method, including step are as follows：1) by glass dust, pre- melt, wollastonite, fluorite, white alkali, sodium fluoride, carbon
Sour manganese, magnesia, aluminium vanadine and ice crystal crush the powder of 200 ~ 300 mesh, and are well mixed；2) to step 1）Add in mixed material
Enter adhesive, water reducer, carbon black and graphite and enter the fusing of slugging stove, obtain melt cinder；3）Melt cinder through Water Quenching, 500 ~ 800 DEG C of dryings,
Crush；4) remix, mist projection granulating.
The fusion temperature of the covering slag：1100 DEG C, the viscosity at 1300 DEG C is：0.35Pa.s, the basicity of covering slag
（CaO/SiO2）For 0.7.This ASP medium carbon steel is used for A steel mills, surface quality defect 0.23% with continuous casting covering slag.
Finally illustrate, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, this area is common
Other modifications or equivalent substitution that technical staff is made to technical scheme, without departing from technical solution of the present invention
Spirit and scope, all should cover among scope of the presently claimed invention.
Claims (5)
- A kind of 1. ASP medium carbon steel continuous crystallizer protecting slag, it is characterised in that：Including raw material and its weight percentage such as Under：Glass dust：0% ~ 6%, pre- melt：10% ~ 30%, wollastonite：10% ~ 30%, fluorite：10.5% ~ 15.5%, white alkali：4% ~ 8%, carbon It is black：4% ~ 8%, graphite：4.5% ~ 8.5%, sodium fluoride：0% ~ 5%, manganese carbonate：5% ~ 8%, magnesia：4% ~ 9%, aluminium vanadine：8% ~ 12%, ice Spar：0.5% ~ 3%, adhesive：1% ~ 3% and water reducer：0.3%~1%；Described adhesive is the mixture of oxidized starch adhesive and drier, the weight of the oxidized starch adhesive and drier Measuring ratio is：100:1~5；The drier is organic drier polyvinyl alcohol.
- A kind of 2. ASP medium carbon steel continuous crystallizer protecting slag as claimed in claim 1, it is characterised in that：Including raw material and its Weight percentage is as follows：Glass dust：0% ~ 6%, pre- melt：10% ~ 30%, wollastonite：10% ~ 30%, fluorite：10.5% ~ 15.5%, White alkali：4% ~ 8%, carbon black：6%, graphite：6.5%, sodium fluoride：0% ~ 5%, manganese carbonate：5% ~ 8%, magnesia：4% ~ 9%, aluminium vanadine：8%~ 12%, ice crystal：0.5% ~ 3%, adhesive：1% ~ 3% and water reducer：0.3%~1%.
- A kind of 3. ASP medium carbon steel continuous crystallizer protecting slag according to claim 1 or 2, it is characterised in that：It is described to subtract Aqua is polycarboxylic acid water reducing agent.
- A kind of 4. ASP medium carbon steel continuous crystallizer protecting slag according to claim 1 or 2, it is characterised in that：The guarantor Protect the fusion temperature of slag：1050 DEG C ~ 1100 DEG C, the viscosity at 1300 DEG C is：0.25 ~ 0.4 Pa.s, the alkali of the covering slag Degree（CaO/SiO2）For 0.7~0.8.
- A kind of 5. preparation method of covering slag as described in claim 1 ~ 4 is any, it is characterised in that：It is as follows including step：1) Glass dust, pre- melt, wollastonite, fluorite, white alkali, sodium fluoride, manganese carbonate, magnesia, aluminium vanadine and ice crystal are crushed and mixed Uniformly；2) to step 1）Adhesive, water reducer, carbon black and graphite are added in mixed material and enters the fusing of slugging stove, obtains melt cinder；3）Liquid Slag is through Water Quenching, drying, crushing；4) remix, mist projection granulating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610131980.8A CN105642850B (en) | 2016-03-09 | 2016-03-09 | A kind of ASP medium carbon steel continuous crystallizer protecting slag and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610131980.8A CN105642850B (en) | 2016-03-09 | 2016-03-09 | A kind of ASP medium carbon steel continuous crystallizer protecting slag and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105642850A CN105642850A (en) | 2016-06-08 |
| CN105642850B true CN105642850B (en) | 2017-12-08 |
Family
ID=56492388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610131980.8A Active CN105642850B (en) | 2016-03-09 | 2016-03-09 | A kind of ASP medium carbon steel continuous crystallizer protecting slag and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105642850B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106583673B (en) * | 2016-12-16 | 2019-04-26 | 河南通宇冶材集团有限公司 | A kind of continuous casting covering slag and preparation method thereof reducing bonding steel leakage |
| CN107931552B (en) * | 2017-12-28 | 2019-12-03 | 西峡龙成冶金材料有限公司 | The continuous-casting crystallizer especially used covering slag of ESP medium carbon steel |
| CN110976797B (en) * | 2019-12-25 | 2022-06-07 | 河南通宇冶材集团有限公司 | Micro-carbon covering slag for medium-high carbon steel of square and rectangular billets and preparation method thereof |
| CN111360217B (en) * | 2020-04-27 | 2021-08-27 | 西峡龙成冶金材料有限公司 | Special continuous casting crystallizer covering slag for CSP sheet billet alloy peritectic steel and application thereof |
| CN111496201A (en) * | 2020-05-26 | 2020-08-07 | 武汉钢铁有限公司 | Anti-sticking coating for copper plate of continuous casting crystallizer and continuous casting crystallizer with anti-sticking coating |
| CN112605356B (en) * | 2020-12-16 | 2022-05-10 | 西峡龙成冶金材料有限公司 | Special covering slag for austenitic stainless steel continuous casting crystallizer and application thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2842938B2 (en) * | 1990-09-29 | 1999-01-06 | 株式会社神戸製鋼所 | Flux for continuous casting |
| CN104439134B (en) * | 2014-12-22 | 2017-06-16 | 河南省西保冶材集团有限公司 | A kind of stainless steel continuous casting crystallizer protecting residue of slab 430 |
| CN104588601A (en) * | 2015-02-14 | 2015-05-06 | 河南通宇冶材集团有限公司 | High-speed wide and thick slab continuous casting mold flux |
| CN105598404B (en) * | 2016-03-09 | 2018-09-14 | 西峡龙成冶金材料有限公司 | A kind of shaped blank mild steel continuous crystallizer protecting slag |
-
2016
- 2016-03-09 CN CN201610131980.8A patent/CN105642850B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105642850A (en) | 2016-06-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105642850B (en) | A kind of ASP medium carbon steel continuous crystallizer protecting slag and preparation method thereof | |
| CN100528406C (en) | Continuous casting crystallizer casting powder for weathering steel and manufacturing method thereof | |
| CN101947644B (en) | High-manganese high-nitrogen low-nickel stainless steel plate blank continuous casting crystallizer covering slag and preparation method thereof | |
| CN100566887C (en) | The crystallizer protecting residue of special-shaped continuous casting containing manganses low-alloy high strength steel | |
| CN101502871B (en) | Bloom continuous casting crystallizer covering slag and preparation method thereof | |
| CN101406939B (en) | High-sodium low-fluorine continuous casting mould fluxes and preparation method thereof | |
| CN102019384B (en) | High-viscosity continuous casting protective slag for solving slag inclusion on surface of low-carbon steel | |
| CN106513607B (en) | A kind of 304 stainless steel continuous crystallizer protecting slags and preparation method thereof | |
| CN100506433C (en) | Carbon-free casting powder for casting steel making die | |
| CN102248141B (en) | High-alkalinity mould flux used for niobium/vanadium/titanium-containing low alloy wide and heavy plate blank and manufacturing method thereof | |
| CN101637808B (en) | ASP medium thickness slab high drawing speed plate blank low-carbon steel continuous casting functional protective material | |
| CN1927502A (en) | Low-carbon steel protecting slag for continuous casting of sheet billet and preparing method thereof | |
| CN102233411B (en) | Low-alkalinity crystallizer covering slag prepared from building waste clay | |
| CN102728797A (en) | Crystallizer protective slag for effectively controlling carbon steel cracks in compact strip production (CSP) | |
| CN101837436B (en) | Function protecting material for special ASP ultra-low carbon continuous casting crystallizer | |
| CN109967707A (en) | The continuous-casting crystallizer especially used covering slag of carbon and low-alloy and its application in a kind of CSP | |
| CN104923754A (en) | High-drawing-speed sheet billet peritectic steel continuous casting crystallizer casting powder and preparation method thereof | |
| CN103990770A (en) | High-alkalinity high-lubricity continuous casting crystallizer casting powder and method for performing continuous casting on peritectic steel slab | |
| CN101637810B (en) | SMS, Danieli plate blank medium carbon steel continuous casting functional protective material | |
| CN104128578B (en) | Environment-friendly type high alumina peritectic steel continuous crystallizer protecting slag | |
| CN105522130B (en) | A kind of medium carbon steel chamfering copper coin continuous crystallizer protecting slag and preparation method thereof | |
| CN101204727A (en) | Slim slab low carbon steel special for continuous casting crystallizer protected slag and production processes with same | |
| CN103894568A (en) | Casting powder | |
| CN102009142B (en) | 30MnSi steel special continuous casting crystallizer functional protection material | |
| CN102009141A (en) | Function protection material for medium and low carbon tool and die steel special continuous casting crystallizer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |