CN106319140A - Energy-saving environment-friendly type converter slag splashing conditioning agent and preparing method thereof - Google Patents
Energy-saving environment-friendly type converter slag splashing conditioning agent and preparing method thereof Download PDFInfo
- Publication number
- CN106319140A CN106319140A CN201510367591.0A CN201510367591A CN106319140A CN 106319140 A CN106319140 A CN 106319140A CN 201510367591 A CN201510367591 A CN 201510367591A CN 106319140 A CN106319140 A CN 106319140A
- Authority
- CN
- China
- Prior art keywords
- slag
- raw material
- regulator
- raw materials
- magnesia
- 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
Landscapes
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The invention discloses an energy-saving environment-friendly type converter slag splashing conditioning agent and a preparing method thereof. The conditioning agent comprises, by mass percent, 50% to 80% of used magnesium-clad paint, 5% to 11% of coke, 5% to 20% of active lime, 5% to 20% of used scrap aluminum magnesium carbon bricks and 5% to 20% of an addition agent. Raw materials are placed in a pulverizer to be pulverized, the pulverized raw materials are put into a ball mill to be pulverized to be smaller than 120 meshes, the pulverized raw materials are placed in a stirring machine to be subject to dry blending for 5 min to 10 min, the raw materials evenly mixed are subject to pelletizing through a pelletizing machine, water serves as a bonding agent until the sphere reaches the needed granularity; the made spherical slag splashing conditioning agent is naturally aired until the water mass percent is smaller than 5%.
Description
Technical field
The present invention relates to converter lining protection technology by slag splashing field, be specifically related to a kind of energy saving and environment friendly converter and spatter slag regulator and preparation thereof
Method.
Background technology
Converter lining protection technology by slag splashing is to leave part finishing slag after converter tapping, and adds appropriate slag adjusting agent, makes slag have
Suitably viscosity and refractoriness, then jet high pressure nitrogen to slag with oxygen rifle, impact slag, make slag be splashed on furnace lining,
Furnace lining surface forms one layer of erosion-resistant protective layer, reaches to protect the purpose of furnace lining.Residue adjustment before splashing slag in converter processed
Journey generally uses and slag adds the oxygen that magnesia, magnesite or dolomite etc. improve in slag rich in the slag adjusting agent etc. of magnesium oxide to staying
Change content of magnesium, such as carbon containing calcined magnesite ball etc., make the content of magnesia in slag reach saturated or over-saturation state, improve the resistance to of slag
Fire degree and viscosity, make slag reach to spatter the requirement of slag technique.
With in rear middle bag magnesia coating rich in magnesium oxide, the most un-sintered part, content of magnesia is up to more than 87%.And
Directly discarded for being presently mainly with the process of rear middle bag magnesia coating, employing is buried or stacking method is disposed.It is so
Significant wastage to resource, is also the very big destruction to environment.But, owing to China's magnesium ore resources enriches, magnesium products price is just
Preferably.Therefore, these are the most sufficiently paid attention to rich in the recycling aspect with rear middle bag magnesia coating that magnesium oxide is higher.
Need the processing stage of residue adjustment before splashing slag in converter slag to add the substantial amounts of slag adjusting agent rich in magnesium oxide to staying, if it is possible to will
With rear middle bag magnesia coating be applied among the slag adjusting agent of slag splashing use, replace slag adjusting agent use in preparation process magnesia,
Magnesite or dolomite etc. are as raw material, it will make the middle bag magnesia coating discarded be applied, and also can reduce converter spatters slag simultaneously
Furnace retaining cost and make certain contribution for environmental protection cause.
CN 102787204 A discloses a kind of energy saving and environment friendly splashing slag in converter material and production technology thereof.The technology of this invention
Scheme is that the parts by weight proportioning of various raw materials in splashing slag in converter material is: light-burning magnesium powder 30～50, with rear waste magnesia carbon brick 20～
30, limestone 15～30, coke 0～5, active lime dust-removing powder 1～5.Agitated for raw material machine, ball mill will be milled to
Granularity is less than after 180 mesh, and granulation is dried.Although this patent employs in the feed uses rear waste magnesia carbon brick, but spatter slag in control and protect
Mainly it is controlled by adding light-burning magnesium powder during content of magnesia in furnace charge, therefore there is high in cost of production problem.
CN 102534099 A discloses a kind of magnesium carbon ball improving splashing slag in converter effect.The technical scheme of this invention is magnesium carbon
In ball, the percentage by weight of various raw materials is as follows: C35%, MgO55%, H2O10%.This patent by reduce magnesium carbon sphere volume density,
Control humidity, add in slag and can burst rapidly, reach the effect fully melting, reacting, slag can be realized rapidly, fully modify,
Improve slag splashing effect and modification agent utilization rate.But the raw material that this patent uses in preparation process is also enriched in the ore deposit of magnesium oxide
, therefore there is certain acquisition cost in thing, causes the problems such as high, the pollution environment of splashing slag in converter cost.
Summary of the invention
The technical problem to be solved is to provide a kind of energy saving and environment friendly converter and spatters slag regulator and preparation method thereof, profit
With discarded rear middle bag magnesia coating as one of the raw material of regulator, routine is replaced to use magnesium in the preparation process of regulator
Sand, magnesite etc. adjust the content of magnesia in regulator rich in the mineral of magnesium oxide as raw material, cost-effective, protect environment.
Slag regulator and preparation method thereof is spattered in a kind of energy saving and environment friendly converter, is realized by following technical proposals:
Slag regulator is spattered in a kind of energy saving and environment friendly converter, and the proportioning of the most various raw materials is by mass percentage: with rear middle bag magnesium
Matter coating 50～80, coke 5～11, active lime 5～20, with rear aluminium scrap magnesia carbon brick block 5～20, additive 5～20；
The purpose of this proportioning raw materials is: utilizes discarded rear middle bag magnesia coating as one of raw material of regulator, often replaces
The magnesia of rule employing, magnesium powder etc. are rich in the mineral of magnesium oxide, and the content of magnesia in control and regulation agent is 40%～70%.Coke
Addition be to improve to spatter the carbon content in slag regulator, control carbon content 5%～10%.Residue adjustment process before slag splashing
In, coke, as the ferrum oxide in reducing agent reduction remained converter slag, reduces the oxidisability of slag.Being added to of active lime
Adjust the basicity in slag, it is often more important that by the fusing point adjusting adjustment slag further and the viscosity of basicity, make slag have
Suitably viscosity and refractoriness.With rear aluminium scrap magnesia carbon brick block and the oxidation being added in adjustment regulator and slag of additive
Before other composition such as aluminum and silicon oxide, and then control slag splashing, the ore deposit of slag adjusts viscosity and the refractoriness of slag mutually, makes stove
Slag reaches to spatter the requirement of slag technique.
Weight/mass percentage composition MgO >=70%, TFe≤3%, S ＜ 0.03%, P ＜ 0.04% is pressed with in rear middle bag magnesia coating；
The purpose of this component requirements is: chooses the un-sintered part higher with content of magnesia in rear middle bag magnesia coating, is spattering slag
The preparation process of regulator uses it as one of raw material, save production cost, protect environment.TFe, S, the control of P content
Purpose processed is oxidisability and sulfur, the phosphorus impurities content in order to avoid increasing slag when residue adjustment, it is often more important that avoid spattering slag
Spattering containing too high sulfur, phosphorus content in slag blanket on rear furnace wall, when next stove pneumatic steelmaking, harmful element sulphur, phosphorus etc. being transmitted
In molten steel.
Coke is pressed weight/mass percentage composition C >=88%, S ＜ 0.20%, ash ＜ 10%, volatile matter ＜ 5%；
Using coke is owing to coke price is cheap and deoxidation effect is good as one of raw material spattering slag regulator.Coke component requirements
Purpose be: select high grade coke as one of raw material spattering slag regulator, the deoxidation effectiveness of slag can be improved, additionally can avoid
To slag is brought into more harmful element.
Active lime is pressed weight/mass percentage composition CaO >=60%, SiO2≤ 1.6%, S≤0.026%；
Spatter that to add the purpose of active lime in slag regulator be to adjust the basicity in slag, it is often more important that by basicity of slag
Adjust, adjust fusing point and the viscosity of slag, dross amount during raising slag splashing and the fire-resistant corrosion resisting property of dross layer further.
Weight/mass percentage composition Al is pressed with in rear aluminium scrap magnesia carbon brick block2O3>=60%, MgO >=10%, C >=8%；
Spatter that to use the purpose with rear aluminium scrap magnesia carbon brick block in the raw material of slag regulator be to utilize Al therein2O3, MgO etc. adjusts
The composition of remained converter slag, contributes to playing slag during slag splashing and slag generates high-melting-point phase.It addition, aluminium scrap magnesia carbon brick block is become useless
For treasured, reducing cost, economize on resources, and magnesium oxide therein can increase the high-melting-point phase stayed in slag, carbon can reduce and stays slag
Oxidisability.
Additive is Al, Mg, Al-Mg, Al-Si and their oxide, can be added thereto one or several as interpolation
Agent；
Spatter that to add the purpose of additive in the raw material of slag regulator be to improve to spatter the effect reached desired by slag regulator, and by adjusting
The residue adjustment of remained converter slag is improved fusing point and the viscosity of slag by joint agent, makes slag possess the condition of slag splashing.
The preparation method that slag regulator is spattered in a kind of energy saving and environment friendly converter is as follows:
1) spatter the proportioning raw materials of slag regulator according to a kind of energy saving and environment friendly converter described above, raw material is put in pulverizer
Pulverize, then the raw material after pulverizing is put into and is milled to granularity in ball mill less than 120 mesh；
2) raw material after grinding is put into and is dry mixed 5～10min in blender；
3) raw material of mix homogeneously is carried out on pelletizer pelletizing, uses water as binding agent, until spheroid granularity reach 5～
Till 80mm；Adopting and using water as binding agent is due to water low price, and water complies fully with the requirement spattering slag regulator, fall
The preparation cost of high adjustment agent.
4) the spherical slag regulator that spatters made is dried naturally, until biodiversity percentage composition ＜ 5%.
This preparation method is simple, and regulator preparation cost is low, easy popularization and application.Use discarded with rear middle bag magnesia coating generation
For conventional use of magnesia, magnesium powder etc. rich in the mineral of magnesium oxide as the raw material of slag splashing regulator, garbage is become give up into
Treasured, will greatly save steel-making slag splashing cost, decrease the harm that discarded middle bag magnesia coating causes to environment simultaneously,
Solve and pile up problem with the occupation of land of rear middle bag magnesia coating, reduce the waste of magnesium resource.Therefore, employing is magnesia with rear middle bag
Slag splashing regulator prepared by coating will create significant economic benefit and social benefit, has application value.
Detailed description of the invention
Below by some embodiments, the present invention is further described.
Embodiment 1:
Slag regulator is spattered in the energy saving and environment friendly converter of one of the present invention, and the proportioning of the most various raw materials is by mass percentage: after Yong
Middle bag magnesia coating 50, coke 11, active lime 15, with rear aluminium scrap magnesia carbon brick block 14, additive 10 (Al-Mg).
Described with MgO in rear middle bag magnesia coating be 87.1%, TFe be 1.26%, S be 0.011%, P be 0.022%；
In coke C be 89.45%, S be 0.19%, ash be 8.25%, volatilization be divided into 1.11%；In active lime CaO be 61.3%,
SiO2Be 1.18%, S be 0.012%；In aluminium scrap magnesia carbon brick block, Al2O3Be 64.3%, MgO be 11.9%, C be 8.1%.
The preparation method of slag regulator is spattered in a kind of energy saving and environment friendly converter of the present invention:
1) proportioning raw materials of slag regulator is spattered in a kind of energy saving and environment friendly converter as described above, is put in pulverizer by raw material
It is crushed to granularity ＜ 10mm, then the raw material after pulverizing is put into, and to be milled to granularity in ball mill be 130 mesh；
2) raw material after grinding is put into and 5min is dry mixed in blender；
3) raw material of mix homogeneously is carried out on pelletizer pelletizing, use water as binding agent, until spheroid reaches granularity 40mm
Till；
4) the spherical slag regulator that spatters made is dried naturally, until moisture is 2%.
For the 260 tons of splashing slag in converter operations of certain factory, use the slag regulator that spatters of the present invention that remained converter slag has been carried out at residue adjustment
Reason, observes slag and compares thickness after residue adjustment, in its composition of sample analysis, iron oxide content mass percent is 10%, magnesium oxide
Content mass percent is 12%.Carried out observation analysis to spattering slag situation in stove after slag splashing, furnace wall spatter slag blanket thicker and
Thickness is uniform, without the naked leakage of brick or obscission, can be fully achieved furnace retaining purpose.
Embodiment 2:
Slag regulator is spattered in the energy saving and environment friendly converter of one of the present invention, and the proportioning of the most various raw materials is by mass percentage: after Yong
Middle bag magnesia coating 80, coke 5, active lime 5, with rear aluminium scrap magnesia carbon brick block 6, additive 4 (Al-Si).
Described with MgO in rear middle bag magnesia coating be 87.1%, TFe be 1.26%, S be 0.011%, P be 0.022%；
In coke C be 89.45%, S be 0.19%, ash be 8.25%, volatilization be divided into 1.11%；In active lime CaO be 61.3%,
SiO2Be 1.18%, S be 0.012%；In aluminium scrap magnesia carbon brick block, Al2O3Be 64.3%, MgO be 11.9%, C be 8.1%.
The preparation method of slag regulator is spattered in a kind of energy saving and environment friendly converter of the present invention:
1) proportioning raw materials of slag regulator is spattered in a kind of energy saving and environment friendly converter as described above, is put in pulverizer by raw material
It is crushed to granularity ＜ 10mm, then the raw material after pulverizing is put into, and to be milled to granularity in ball mill be 200 mesh；
2) raw material after grinding is put into and 10min is dry mixed in blender；
3) raw material of mix homogeneously is carried out on pelletizer pelletizing, use water as binding agent, until spheroid reaches granularity 60mm
Till；
4) the spherical slag regulator that spatters made is dried naturally, until moisture is 1%.
For the 260 tons of splashing slag in converter operations of certain factory, use the slag regulator that spatters of the present invention that remained converter slag has been carried out at residue adjustment
Reason, observes slag and compares thickness after residue adjustment, in its composition of sample analysis, iron oxide content mass percent is 13%, magnesium oxide
Content mass percent is 15%.Carried out observation analysis to spattering slag situation in stove after slag splashing, furnace wall spatter slag blanket thicker and
Thickness is uniform, without the naked leakage of brick or obscission, can be fully achieved furnace retaining purpose.
Embodiment 3:
Slag regulator is spattered in the energy saving and environment friendly converter of one of the present invention, and the proportioning of the most various raw materials is by mass percentage: after Yong
Middle bag magnesia coating 70, coke 7, active lime 8, with rear aluminium scrap magnesia carbon brick block 10, additive 5 (Al-Si and oxidation thereof
Thing).
Described with MgO in rear middle bag magnesia coating be 87.1%, TFe be 1.26%, S be 0.011%, P be 0.022%；
In coke C be 89.45%, S be 0.19%, ash be 8.25%, volatilization be divided into 1.11%；In active lime CaO be 61.3%,
SiO2Be 1.18%, S be 0.012%；In aluminium scrap magnesia carbon brick block, Al2O3Be 64.3%, MgO be 11.9%, C be 8.1%.
The preparation method of slag regulator is spattered in a kind of energy saving and environment friendly converter of the present invention:
1) proportioning raw materials of slag regulator is spattered in a kind of energy saving and environment friendly converter as described above, is put in pulverizer by raw material
It is crushed to granularity ＜ 10mm, then the raw material after pulverizing is put into, and to be milled to granularity in ball mill be 150 mesh；
2) raw material after grinding is put into and 8min is dry mixed in blender；
3) raw material of mix homogeneously is carried out on pelletizer pelletizing, use water as binding agent, until spheroid reaches granularity 50mm
Till；
4) the spherical slag regulator that spatters made is dried naturally, until moisture is 3%.
For the 260 tons of splashing slag in converter operations of certain factory, use the slag regulator that spatters of the present invention that remained converter slag has been carried out at residue adjustment
Reason, observes slag and compares thickness after residue adjustment, in its composition of sample analysis, iron oxide content mass percent is 11%, and magnesium oxide contains
Amount mass percent is 14%.Having carried out observation analysis to spattering slag situation in stove after slag splashing, it is thicker and thick that slag blanket is spattered in furnace wall
Degree uniformly, without the naked leakage of brick or obscission, can be fully achieved furnace retaining purpose.
Embodiment 4:
Slag regulator is spattered in the energy saving and environment friendly converter of one of the present invention, and the proportioning of the most various raw materials is by mass percentage: after Yong
Middle bag magnesia coating 60, coke 9, active lime 10, with rear aluminium scrap magnesia carbon brick block 16, additive 5 (Al-Mg2, Al-Si
Oxide 2, Mg1).
Described with MgO in rear middle bag magnesia coating be 87.1%, TFe be 1.26%, S be 0.011%, P be 0.022%；
In coke C be 89.45%, S be 0.19%, ash be 8.25%, volatilization be divided into 1.11%；In active lime CaO be 61.3%,
SiO2Be 1.18%, S be 0.012%；In aluminium scrap magnesia carbon brick block, Al2O3Be 64.3%, MgO be 11.9%, C be 8.1%.
The preparation method of slag regulator is spattered in a kind of energy saving and environment friendly converter of the present invention:
1) proportioning raw materials of slag regulator is spattered in a kind of energy saving and environment friendly converter as described above, is put in pulverizer by raw material
It is crushed to granularity ＜ 10mm, then the raw material after pulverizing is put into, and to be milled to granularity in ball mill be 180 mesh；
2) raw material after grinding is put into and 9min is dry mixed in blender；
3) raw material of mix homogeneously is carried out on pelletizer pelletizing, use water as binding agent, until spheroid reaches granularity 45mm
Till；
4) the spherical slag regulator that spatters made is dried naturally, until moisture is 4%.
For the 260 tons of splashing slag in converter operations of certain factory, use the slag regulator that spatters of the present invention that remained converter slag has been carried out at residue adjustment
Reason, observes slag and compares thickness after residue adjustment, in its composition of sample analysis, iron oxide content mass percent is 12%, magnesium oxide
Content mass percent is 13%.Carried out observation analysis to spattering slag situation in stove after slag splashing, furnace wall spatter slag blanket thicker and
Thickness is uniform, without the naked leakage of brick or obscission, can be fully achieved furnace retaining purpose.
Claims (2)
1. slag regulator is spattered in an energy saving and environment friendly converter, it is characterised in that the proportioning of various raw materials is by mass percentage: use
Bag magnesia coating 50～80 in rear, coke 5～11, active lime 5～20, with rear aluminium scrap magnesia carbon brick block 5～20, additive
5～20；Described presses weight/mass percentage composition MgO >=70%, TFe≤3%, S ＜ 0.03%, P with in rear middle bag magnesia coating
＜ 0.04%；Described coke is pressed weight/mass percentage composition C >=88%, S ＜ 0.20%, ash ＜ 10%, volatile matter ＜ 5%；
Described active lime is pressed weight/mass percentage composition CaO >=60%, SiO2≤ 1.6%, S≤0.026%；Described uses rear aluminium scrap
Magnesia carbon brick block is pressed weight/mass percentage composition Al2O3>=60%, MgO >=10%, C >=8%；Described additive is Al, Mg,
Al-Mg, Al-Si and their oxide, be added thereto one or several.
2. the preparation method of slag regulator is spattered in an energy saving and environment friendly converter according to claim 1, it is characterised in that bag
Include following steps:
1) spatter the proportioning raw materials of slag regulator according to above-mentioned energy saving and environment friendly converter, raw material is put in pulverizer and pulverize, then will
Raw material after pulverizing is put into and is milled to granularity in ball mill less than 120 mesh；
2) raw material after grinding is put into and is dry mixed 5～10min in blender；
3) raw material of mix homogeneously is carried out on pelletizer pelletizing, uses water as binding agent, until spheroid granularity reach 5～
Till 80mm；
4) the spherical slag regulator that spatters made is dried naturally, until biodiversity percentage composition ＜ 5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510367591.0A CN106319140A (en) | 2015-06-29 | 2015-06-29 | Energy-saving environment-friendly type converter slag splashing conditioning agent and preparing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510367591.0A CN106319140A (en) | 2015-06-29 | 2015-06-29 | Energy-saving environment-friendly type converter slag splashing conditioning agent and preparing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106319140A true CN106319140A (en) | 2017-01-11 |
Family
ID=57723026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510367591.0A Pending CN106319140A (en) | 2015-06-29 | 2015-06-29 | Energy-saving environment-friendly type converter slag splashing conditioning agent and preparing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106319140A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110564917A (en) * | 2019-09-24 | 2019-12-13 | 山东钢铁股份有限公司 | Slag modifier and preparation method thereof |
| CN111334638A (en) * | 2020-03-04 | 2020-06-26 | 马鞍山钢铁股份有限公司 | Used middle ladle residual lining regenerated magnesium ball and preparation method thereof |
| CN114264157A (en) * | 2021-12-10 | 2022-04-01 | 徐州宏阳新材料科技股份有限公司 | Method for prolonging service life of submerged arc furnace body |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1254018A (en) * | 1998-10-05 | 2000-05-24 | 川崎制铁株式会社 | Converter fire wall slag-splashing furnace-protecting method |
| CN101200772A (en) * | 2007-10-30 | 2008-06-18 | 攀枝花顺腾集团冶金材料有限公司 | Improved type slag splashing furnace protecting material and preparation method thereof |
| CN101705328A (en) * | 2009-11-27 | 2010-05-12 | 广州钢铁企业集团有限公司 | Method for manufacturing slagging pellets by using waste magnesia carbon brick hot end |
| CN102634630A (en) * | 2012-05-10 | 2012-08-15 | 首钢总公司 | Modifier for slag splashing protection of converter and using method of the modifier |
| CN102787204A (en) * | 2012-08-23 | 2012-11-21 | 武汉钢铁(集团)公司 | Energy-saving environmentally-friendly converter slag splashing protecting charging and production process thereof |
| CN104498665A (en) * | 2014-12-11 | 2015-04-08 | 南京梅山冶金发展有限公司 | Slag-splashing lining protection material regenerated by used magnesia carbon brick for converter |
-
2015
- 2015-06-29 CN CN201510367591.0A patent/CN106319140A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1254018A (en) * | 1998-10-05 | 2000-05-24 | 川崎制铁株式会社 | Converter fire wall slag-splashing furnace-protecting method |
| CN101200772A (en) * | 2007-10-30 | 2008-06-18 | 攀枝花顺腾集团冶金材料有限公司 | Improved type slag splashing furnace protecting material and preparation method thereof |
| CN101705328A (en) * | 2009-11-27 | 2010-05-12 | 广州钢铁企业集团有限公司 | Method for manufacturing slagging pellets by using waste magnesia carbon brick hot end |
| CN102634630A (en) * | 2012-05-10 | 2012-08-15 | 首钢总公司 | Modifier for slag splashing protection of converter and using method of the modifier |
| CN102787204A (en) * | 2012-08-23 | 2012-11-21 | 武汉钢铁(集团)公司 | Energy-saving environmentally-friendly converter slag splashing protecting charging and production process thereof |
| CN104498665A (en) * | 2014-12-11 | 2015-04-08 | 南京梅山冶金发展有限公司 | Slag-splashing lining protection material regenerated by used magnesia carbon brick for converter |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110564917A (en) * | 2019-09-24 | 2019-12-13 | 山东钢铁股份有限公司 | Slag modifier and preparation method thereof |
| CN111334638A (en) * | 2020-03-04 | 2020-06-26 | 马鞍山钢铁股份有限公司 | Used middle ladle residual lining regenerated magnesium ball and preparation method thereof |
| CN114264157A (en) * | 2021-12-10 | 2022-04-01 | 徐州宏阳新材料科技股份有限公司 | Method for prolonging service life of submerged arc furnace body |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100694012B1 (en) | A slag conditioner composition, process for manufacture and method of use in steel production | |
| TW577928B (en) | Refining agent and refining method | |
| CN101413043B (en) | Steel-smelting regulator and preparation thereof | |
| CN106544464A (en) | Environment-friendly type splashing slag in converter material and preparation method thereof | |
| CN102787204B (en) | Energy-saving environmentally-friendly converter slag splashing protecting charging and production process thereof | |
| EP2949765B1 (en) | Composite briquette and method for making a steelmaking furnace charge | |
| CN104328242B (en) | Method for making steel containing vanadium titanium high phosphorus hot metal | |
| CN103451373B (en) | Magnesium ball used for converter steelmaking and production technology thereof | |
| CN103484595B (en) | Production process of magnesian slag pressing agents | |
| CN100467621C (en) | Molten steel refining agent and preparation method | |
| CN104531954A (en) | Production technology of molten aluminum killed steel cleaning agent | |
| CN106319140A (en) | Energy-saving environment-friendly type converter slag splashing conditioning agent and preparing method thereof | |
| CN107488784A (en) | A kind of blast furnace ironmaking superfluxed pellets and its production method | |
| CN102212639A (en) | Converter foamed slag pressing agent and using method thereof | |
| CN100529111C (en) | Special-purpose slag adjusting agent for vanadium-titanium-iron-water-magnesium desulfurization | |
| CN110257626B (en) | Method for preparing sinter from steel rolling iron scale and prepared sinter | |
| CN101550465A (en) | Manganese-based fluxing agent for converter steelmaking and preparation method thereof | |
| CN105200192B (en) | Liquid steel refining slag and its preparation method and application | |
| JP5477170B2 (en) | Method for producing sintered ore | |
| CN103695632A (en) | Method for regulating slagging alkalinity of melt reduction modification furnace by using iron mine tailings | |
| CN108220529A (en) | It is a kind of using sintering machine head end electro-precipitating dust as the desiliconization of hot metal agent of matrix | |
| CN103993122B (en) | A kind of converter final slag modifier and preparation method thereof and converter steel making method | |
| CN102899483B (en) | A kind of recycling technique of LF furnace refining slag | |
| CN104328361A (en) | Anti-seismic steel bar and preparation method thereof | |
| CN103031409B (en) | Novel process of steelmaking deoxidization by utilizing precipitator dust of refining furnace |
Legal Events
| 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: 20170111 |
|
| RJ01 | Rejection of invention patent application after publication |