CN106492981A - A kind of method for improving slag iron component recovery - Google Patents
A kind of method for improving slag iron component recovery Download PDFInfo
- Publication number
- CN106492981A CN106492981A CN201610833748.9A CN201610833748A CN106492981A CN 106492981 A CN106492981 A CN 106492981A CN 201610833748 A CN201610833748 A CN 201610833748A CN 106492981 A CN106492981 A CN 106492981A
- Authority
- CN
- China
- Prior art keywords
- slag
- modification agent
- iron
- iron component
- component recovery
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/005—Pretreatment specially adapted for magnetic separation
- B03C1/015—Pretreatment specially adapted for magnetic separation by chemical treatment imparting magnetic properties to the material to be separated, e.g. roasting, reduction, oxidation
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a kind of method for improving slag iron component recovery, the modification agent of preset ratio is mixed in slag in the molten state, i.e. during the slag of melting is discharged, modification agent is added in slag, directly modification agent is melted using slag sensible heat, slag basicity, modification agent volume less than or equal to slag quality 25% are changed by melt method for modifying.Component recombination is carried out to slag by adding the modification agent containing silica, and/or containing iron oxide, increases magnetic iron ore, hercynite content, so as to improve the rate of recovery of iron component.The present invention efficiently utilizes the sensible heat of molten steel slag, can achieve upgrading processes without the need for concurrent heating；Add the modification agent of slag to be cheap raw material, can also be the solid wastes such as mine tailing, dirt mud, realize that the optimization and collaboration of resource are utilized；Meanwhile, the raising of slag iron component recovery is realized by adding silicon oxide-containing, and/or modification agent containing iron oxide and increasing magnetic iron ore, hercynite content after component recombination.
Description
Technical field
The invention belongs to industrial solid castoff processes skill field, and in particular to a kind of raising slag iron component recovery
Method.
Background technology
In industrial circle, particularly metallurgy industry, there is substantial amounts of solid waste, such as slag.Slag includes electroslag
And vessel slag, its primary chemical is constituted CaO, Fe2O3、SiO2、Al2O3, MgO, MnO, there is chemical composition beneficial in a large number.Cause
This, needs effectively to recycle slag.At present, the recycling of slag is concentrated mainly on three aspects, and one is
Returning utilization in iron and steel enterprise, two are utilized as construction material, and three is as fertilizer, soil conditioner in agricultural.
However, the utilization rate of tailings only has 20% after slag selects iron, remaining tailings is all that simple heap is abandoned in slag field, takes and destroys soil
Ground.
In slag containing about 10% metallic iron and about 30% ferriferous oxide, Total iron content up to 30%, with very high
Recovery value.But, in reclaiming to the iron component of slag at present, steel slag hot disintegrating technique and cold conditions slag crushing, ball milling, magnetic separation
Technique can only reclaim sub-fraction metallic iron and magnetic iron ore, and the ferro element in non magnetic ferriferous oxide cannot be reclaimed, and waste treasured
Expensive ferro element resource.Additionally, the molten slag in source discharge has a large amount of high-quality sensible heats.Temperature just after deslagging is reachable
1700 DEG C, more than 1550 DEG C under molten condition, are maintained, average heat enthalpy value is about 1670MJ/t.And existing Technology of Steel Slag Processing
Substantially fail the effectively utilizes partial heats, waste the slag sensible heat of preciousness.
In prior art, number of patent application be 200910067564.6 Chinese patent in fusion reducing furnace using coal dust
Reduce as the ferro element in electroslag of the reducing agent by molten condition, so as to reclaim the ferro element in electroslag.In this patent
Utilized is the reducing process for reclaiming ferro element in slag.Reducing process mainly uses reducing agent at high temperature by the iron oxygen in slag
Compound is reduced into the method for iron simple substance to reclaim iron, and the method rate of recovery is higher, but need to add reducing agent or control reducing atmosphere,
And extra additional heat is needed, increase energy consumption and cost.
It is to pour molten steel slag in auxiliary material melt into that number of patent application is 201210359035.5 Chinese patent, prepare with
Diopside and the ferromagnetic glass-ceramics that ferrite is principal crystalline phase.Number of patent application is that 201410276645.8 Chinese patent exists
High siliceous material is added in slag, is sampled and chilling after 1250 DEG C of high temperature in 1500 DEG C of calcinings, separated and remove iron after magnetic separation,
The stability of modification slag is improved, and can be used as cement mixture, but does not reclaim iron as main research.Above-mentioned special
Profit is to reclaim the ferro element in slag using magnetic selection method.Magnetic method is the method for most widely used commercial recovery iron, but magnetic
The part metals iron in electroslag can only be also isolated in choosing, and a large amount of ferriferous oxides are effectively reclaimed.
It is under stable liquid steel slag state that number of patent application is 201510282540.8 Chinese patent, is blown into blast furnace
Coal gas or coke-stove gas, oxidation reaction process continue 15～35min, when temperature reaches 1300～1400 DEG C, increase blast furnace coal
The content of carbon dioxide in gas or coke-stove gas, reduces the content of oxygen to suppress oxidation rate, continues 1～2h of reaction, until
Up to 1400～1600 DEG C of temperature, is basically completed FeO to Fe3O4Oxidation, while also needing to prevent Fe3O4To Fe2O3Enter
One step is aoxidized, while slag is cooled down by the cooling velocity with 1～8K/min, finally by recovery process such as broken, screening, magnetic separation
Slag after by cooling carries out sorting deep processing.This be by oxidizing process to slag in ferro element reclaim.In order to increase
The content of ferromagnetic material in slag, has numerous studies to adopt oxidative treatment slag.Oxidizing process is referred to using the oxygen under high temperature
Low price ferriferous oxide is oxidized to have magnetic Fe by the property changed atmosphere3O4, so as to carry out reclaiming irony component, but over oxidation is again
Fe can be caused3O4It is transformed into Fe2O3, oxidizing gas there is also inconvenience on degree of oxidation control, execute-in-place.
Content of the invention
Embodiment of the present invention technical problem to be solved is to provide a kind of method for improving slag iron component recovery, passes through
Increase in slag magnetic iron ore, hercynite content realizing the raising of slag iron component recovery, reach in slag ferro element and
Double utilizations of molten steel slag sensible heat, realize maximum resource utilization.
According to an aspect of the invention, there is provided a kind of method for improving slag iron component recovery, methods described bag
Include：
The modification agent of preset ratio is mixed in slag in the molten state.
In such scheme, methods described also includes：
After directly melt modification agent, cooling treatment is carried out to slag；
Slag after to cooling is by broken, screening, magnetic separation recovery iron component.
In such scheme, the slag includes：Electroslag, converter slag, or stainless steel smelting slag.
In such scheme, the modification agent includes：SiO2High silica contents of the weight/mass percentage composition more than 70% are modified
Agent；Fe2O3High oxidation iron content modification agent of the weight/mass percentage composition more than 35%；The SiO of any ratio2And Fe2O3Total content surpass
Cross 70% high silicon high iron modification agent.
In such scheme, the preset ratio is adjusted according to following condition：
After slag is modified by modification agent, the alkalinity ranges of the slag are 1.20～2.00, Fe2O3Contain with FeO amount percentages
The ratio of amount is more than 0.22.
In such scheme, the preset ratio, be the modification agent addition account for slag mass percent be 10%～
25%.
One kind that present invention offer be can be seen that from the technical scheme of above example improves slag iron by changing basicity
The method of component recovery, is mixed into the modification agent of preset ratio, i.e., in the slag discharge of melting in slag in the molten state
During, modification agent being added in slag, directly modification agent being melted using slag sensible heat, steel is changed by melt method for modifying
Basicity of slag, modification agent volume less than or equal to slag quality 25%.By adding containing silica, and/or containing iron oxide
Modification agent carries out component recombination to slag, increases magnetic iron ore, hercynite content, so as to improve the rate of recovery of iron component.This
Bright have the advantages that：
(1) temperature of the molten steel slag that has just discharged in industry is up to 1550～1750 DEG C or so, with very big sensible heat, this
Inventive embodiments are efficiently utilized the sensible heat of molten steel slag, can achieve to change using the sensible heat fusing modification agent of melting electroslag
Matter process is without the need for concurrent heating；
(2) add the modification agent of slag to be cheap raw material, can also be the solid wastes such as mine tailing, dirt mud, realize the excellent of resource
Change and collaboration is utilized；
(3) by add silicon oxide-containing, and/or modification agent containing iron oxide and increase after component recombination magnetic iron ore,
Hercynite content is realizing the raising of slag iron component recovery；Meanwhile, the heavy metal such as Mn, Cr is also by this process and iron shape
Into the magnetic crystalline phase of solid solution, while realizing reclaiming；
(4) steel slag stability after modifying improves, and heavy metal is reduced, and is conducive to the secondary utilization of tailings.
Specific embodiment
For making the technical problem to be solved in the present invention, technical scheme and advantage clearer, below the present invention is carried out in detail
Thin description.
The slag of metallurgical industry is needed through changing from molten condition to the state of cooling during discharge.And this
Process distributing and losing with amount of heat.The present invention is directed to high-temperature fusion slag, during slag discharge, will modification
Agent is added thereto, and directly melts modification agent using dross sensible heat, changes slag basicity by melt method for modifying, is contained by adding
The modification agent of iron oxide, and/or silica carries out the coupling of iron valence state, so as to increase magnetic iron ore in slag, hercynite content
To realize the raising of slag iron component recovery.
By finding to lot of experiments, in converter slag, irony component is typically only capable to a magnetic separation recovery half left side to inventor
The right side, is still also had the iron oxide (chemical constituent) for being close to 20% to fail to reclaim, is wherein mainly deposited in the form of RO phases after magnetic separation
Ferrous iron and there is ferric iron with ferrous acid calcium form；And become apparent from electroslag, which contains ferrous more.
Using there is ferric iron and ferrous iron in slag in the present invention, but restriction ore deposit mutually formed due to thermodynamics, no
Fe can be combined into3O4, by changing basicity, discharge Fe3O2, promote Fe3O4Formation.Therefore by adding high silicon modification agent,
Change slag basicity, so that slag ore deposit is mutually recombinated, promote ferric iron therein and ferrous iron to combine to form ore deposit containing ferromagnetism
Thing.Meanwhile, in slag based on ferrous iron, in slag under conditions of ferric iron deficiency, the modification agent containing iron oxide is added,
Under the conditions of suitable basicity, the formation of magnetic mineral can be promoted.
Simulation is calculated and field experiment research shows in a large number, and it is 25% left side that dross sensible heat can melt the ability of modification agent
The right side, therefore can realize melting modification agent using dross sensible heat, so that steel slag modification process is simple, low cost, and easily
In enforcement.
As slag basicity is high, viscosity can be raised with temperature drop rapidly in the molten state, therefore, using reduction side
Method adds the reducing agents such as coal dust to need to consume amount of heat to reduce, and implements at the scene to be necessarily required to increase a large amount of concurrent heating equipment,
High cost, difficulty are big, it is difficult to apply.And the present invention is under conditions of a small amount of heat is consumed, using the high temperature sensible heat of slag itself,
Improve the magnetic separation rate of slag.
Specifically, the method for the raising slag iron component recovery of embodiment of the present invention, comprises the steps：
The modification agent of preset ratio is mixed in slag in the molten state.
Methods described also includes：
After directly melt modification agent, cooling treatment is carried out to slag；
Slag after to cooling is by broken, screening, magnetic separation recovery iron component.
Above-mentioned steps change liquid steel slag composition by melt method for modifying, so as to change the ore deposit phase group of cooling solid steel slag
Into, increasing magnetic iron ore, hercynite content, the increase of ferromagnetism component in promotion slag, so that realize iron component recovery
Improve；Wherein slag can be electroslag, converter slag or stainless steel smelting slag etc..
Preferably, the modification agent includes：SiO2High silica contents modification agent of the weight/mass percentage composition more than 70%, than
Such as river sand, mine tailing, silicon ash, quartz sand etc.；Fe2O3High oxidation iron content modification agent of the weight/mass percentage composition more than 35%, such as oxygen
Change iron scale, converter dust-removing ash, metallurgical dust sludge etc.；The SiO of any ratio2And Fe2O3Total content more than 70% high silicon high iron modification
Agent, such as iron-containing tailing.Modification agent can be respectively prepared by two class raw materials in use, it is also possible to be mixed with and formed.
Further, the preset ratio, is adjusted according to following condition：
After slag is modified by modification agent, the alkalinity ranges of the slag are 1.20～2.00, and the basicity is diacidic base
Degree；Fe2O3The ratio that percentage composition is measured with FeO is more than 0.22.
Preferably, the preset ratio, be the modification agent addition account for slag mass percent be 10%～25%.
Below by specific embodiment, the present invention is further detailed explanation.
Firstly, it is necessary to illustrate to the slag chemical composition being related in following examples of the present invention, table 1 show this
Slag chemical composition and its percentage by weight in invention specific embodiment；Table 2 is modification agent used in the embodiment of the present invention
Learn composition.
Table 1
| Species | TFe | FeO | Fe2O3 | MFe | CaO | SiO2 | MgO | Al2O3 |
| Electric furnace slag | 19.97 | 15.03 | 11.82 | - | 40.12 | 17.09 | 3.90 | 3.62 |
| Converter slag | 23.00 | 16.47 | 9.49 | 3.43 | 36.80 | 15.40 | 7.56 | 0.87 |
Table 2
| Raw material is constituted | SiO2 | CaO | Fe2O3 | MgO | Al2O3 | Na2O | K2O |
| River sand | 71.26 | 2.87 | 2.72 | 0.88 | 13.92 | 3.71 | 3.88 |
| Iron tailings | 64.64 | 5.97 | 15.26 | 4.33 | 5.04 | 0.94 | 1.32 |
| Metallurgical dust sludge | 16.44 | 9.91 | 63.14 | 1.97 | 4.12 | 0.60 | 1.99 |
First embodiment
The river sand of 16% (weight/mass percentage composition) is mixed in melting electroslag, and the silica content of river sand is 71.26%；
Uniform modification slag air cooling will be further melted, will be milled to broken for modification electroslag sample segment below 200 mesh after cooling,
In case magnetic separation.Test result shows that the basicity for modifying slag is reduced to 1.42, Fe by 2.352O3(quality percentage contains with FeO contents
Amount) ratio be 0.81, the rate of recovery of iron component is 60.47%.
The modified slag in end, carries out iron component recovery by conventional method, and its rate of recovery is 31.75%.Using this
Bright slag is modified after recycling iron component, the slag rate of recovery than not modifying improves 90.40%.The present embodiment is reclaimed
Iron component ferromagnetic material ore deposit based on magnetic iron ore, ferrospinel.
Second embodiment
The iron tailings of 20% (weight/mass percentage composition) is mixed in melting electroslag, and the SiO2+Fe2O3 contents of iron tailings are
79.90%；Uniform modification slag air cooling will be further melted, will be milled to broken for modification electroslag sample segment after cooling
Below 200 mesh, in case magnetic separation.Test result shows that the basicity for modifying slag is reduced to 1.38, Fe2O3 and FeO contents by 2.35
The ratio of (weight/mass percentage composition) is 0.99, and the rate of recovery of iron is 73.71%, improves 132.09% than not modifying slag.
3rd embodiment
The river sand of 25% (weight/mass percentage composition) is mixed in melting vessel slag, and the silica content of river sand is 71.26%；
Uniform modification slag air cooling will be further melted, will be milled to broken for modification vessel slag sample segment below 200 mesh after cooling,
In case magnetic separation.Test result shows that the basicity for modifying slag is reduced to 1.39, Fe by 2.352O3(quality percentage contains with FeO contents
Amount) ratio be 1.88, the rate of recovery of iron is 50.59%, improves 59.29% than not modifying slag.
Fourth embodiment
The smelting of the river sand and 14.46% (weight/mass percentage composition) of 10% (weight/mass percentage composition) is mixed in melting electroslag
Golden dirt mud, the silica content of river sand is 71.26%, the Fe of metallurgical dust sludge2O3Content is 63.14%；To further melt uniform
Modification slag air cooling, be milled to broken for modification electroslag sample segment below 200 mesh after cooling, in case magnetic separation.Test knot
Fruit shows that the basicity for modifying slag is reduced to 1.57, Fe by 2.352O3Ratio with FeO contents (weight/mass percentage composition) is
1.41, the rate of recovery of iron is 74.78%, improves 135.45% than not modifying slag.
The method of the raising slag iron component recovery that the above embodiment of the present invention is provided, during slag discharge,
Modification agent being added thereto, directly modification agent being melted using dross sensible heat, slag basicity is changed by melt method for modifying.Pass through
Add silica, and/or iron oxide to carry out component recombination, increase in slag magnetic iron ore, hercynite content to realize slag iron
The raising of component recovery, had both efficiently utilized the sensible heat of molten steel slag, improve slag iron component recovery again.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, on the premise of without departing from principle of the present invention, some improvements and modifications can also be made, these improvements and modifications
Should be regarded as protection scope of the present invention.
Claims (6)
1. a kind of improve slag iron component recovery method, it is characterised in that methods described includes：
The modification agent of preset ratio is mixed in slag in the molten state.
2. according to claim 1 improve slag iron component recovery method, it is characterised in that methods described is also wrapped
Include：
After directly melt modification agent, cooling treatment is carried out to slag；
Slag after to cooling is by broken, screening, magnetic separation recovery iron component.
3. according to claim 1 and 2 improve slag iron component recovery method, it is characterised in that the slag bag
Include：Electroslag, converter slag, or stainless steel smelting slag.
4. according to claim 1 and 2 improve slag iron component recovery method, it is characterised in that the modification agent
Including：SiO2High silica contents modification agent of the weight/mass percentage composition more than 70%；Fe2O3Weight/mass percentage composition is more than 35%
High oxidation iron content modification agent；The SiO of any ratio2And Fe2O3High silicon high iron modification agent of the total content more than 70%.
5. according to claim 1 and 2 improve slag iron component recovery method, it is characterised in that the default ratio
Example, is adjusted according to following condition：
After slag is modified by modification agent, the alkalinity ranges of the slag are 1.20～2.00, Fe2O3Percentage composition is measured with FeO
Ratio is more than 0.22.
6. according to claim 1 and 2 improve slag iron component recovery method, it is characterised in that the default ratio
Example, be the modification agent addition account for slag mass percent be 10%～25%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610833748.9A CN106492981B (en) | 2016-09-20 | 2016-09-20 | A kind of method for improving slag iron component recovery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610833748.9A CN106492981B (en) | 2016-09-20 | 2016-09-20 | A kind of method for improving slag iron component recovery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106492981A true CN106492981A (en) | 2017-03-15 |
| CN106492981B CN106492981B (en) | 2018-06-12 |
Family
ID=58290867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610833748.9A Active CN106492981B (en) | 2016-09-20 | 2016-09-20 | A kind of method for improving slag iron component recovery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106492981B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107475468A (en) * | 2017-08-22 | 2017-12-15 | 东北大学 | A kind of method of Spinel growth behavior in regulation and control stainless steel slag |
| CN110863103A (en) * | 2019-11-20 | 2020-03-06 | 北方民族大学 | Steel slag treatment method for improving recovery rate of iron in steel slag |
| CN111996314A (en) * | 2020-07-31 | 2020-11-27 | 鞍钢股份有限公司 | Method for extracting iron by using carbon reduction thermal state converter slag |
| CN113234879A (en) * | 2021-05-13 | 2021-08-10 | 北京中科金腾科技有限公司 | Method for reducing carbon emission and preparing cement by using molten steel slag to excite silicothermic reaction for steelmaking |
| CN114195430A (en) * | 2021-12-15 | 2022-03-18 | 北京科技大学 | Method for improving carbonization rate and performance of steel slag sample |
| CN114620964A (en) * | 2022-03-07 | 2022-06-14 | 北京科技大学 | Method for preparing tailings and micro-aggregate and simultaneously producing magnetite |
| CN115121586A (en) * | 2022-07-04 | 2022-09-30 | 中冶节能环保有限责任公司 | Electric furnace slag treatment method and device |
| CN116377143A (en) * | 2023-04-07 | 2023-07-04 | 安徽工业大学 | Method for recycling iron element in steel slag |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1067545A (en) * | 1996-08-22 | 1998-03-10 | Nippon Steel Corp | Modifying of stainless slag |
| CN103122403A (en) * | 2013-03-12 | 2013-05-29 | 河南省西保冶材集团有限公司 | Molten steel and steel slag recycling accelerant |
| CN104016600A (en) * | 2014-06-19 | 2014-09-03 | 中冶建筑研究总院有限公司 | Steel slag high-temperate modification method |
| CN104673965A (en) * | 2015-03-17 | 2015-06-03 | 马鞍山市华东冶金科技发展有限公司 | On-line molten steel slag modification method |
| CN104805250A (en) * | 2015-04-21 | 2015-07-29 | 北京科技大学 | High-temperature slag continuous modification processing method |
| CN105384364A (en) * | 2015-12-04 | 2016-03-09 | 莱芜钢铁华威工程有限公司 | Electric furnace steel slag modifier and method for modifying electric furnace steel slag |
-
2016
- 2016-09-20 CN CN201610833748.9A patent/CN106492981B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1067545A (en) * | 1996-08-22 | 1998-03-10 | Nippon Steel Corp | Modifying of stainless slag |
| CN103122403A (en) * | 2013-03-12 | 2013-05-29 | 河南省西保冶材集团有限公司 | Molten steel and steel slag recycling accelerant |
| CN104016600A (en) * | 2014-06-19 | 2014-09-03 | 中冶建筑研究总院有限公司 | Steel slag high-temperate modification method |
| CN104673965A (en) * | 2015-03-17 | 2015-06-03 | 马鞍山市华东冶金科技发展有限公司 | On-line molten steel slag modification method |
| CN104805250A (en) * | 2015-04-21 | 2015-07-29 | 北京科技大学 | High-temperature slag continuous modification processing method |
| CN105384364A (en) * | 2015-12-04 | 2016-03-09 | 莱芜钢铁华威工程有限公司 | Electric furnace steel slag modifier and method for modifying electric furnace steel slag |
Non-Patent Citations (1)
| Title |
|---|
| 孙鹤群 等: ""利用液态高炉渣制备矿渣棉的调质研究"", 《冶金能源》 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107475468A (en) * | 2017-08-22 | 2017-12-15 | 东北大学 | A kind of method of Spinel growth behavior in regulation and control stainless steel slag |
| CN107475468B (en) * | 2017-08-22 | 2019-03-12 | 东北大学 | A kind of method of Spinel growth behavior in regulation stainless steel slag |
| CN110863103A (en) * | 2019-11-20 | 2020-03-06 | 北方民族大学 | Steel slag treatment method for improving recovery rate of iron in steel slag |
| CN110863103B (en) * | 2019-11-20 | 2021-07-27 | 北方民族大学 | Steel slag treatment method for improving recovery rate of iron in steel slag |
| CN111996314A (en) * | 2020-07-31 | 2020-11-27 | 鞍钢股份有限公司 | Method for extracting iron by using carbon reduction thermal state converter slag |
| CN113234879A (en) * | 2021-05-13 | 2021-08-10 | 北京中科金腾科技有限公司 | Method for reducing carbon emission and preparing cement by using molten steel slag to excite silicothermic reaction for steelmaking |
| CN114195430A (en) * | 2021-12-15 | 2022-03-18 | 北京科技大学 | Method for improving carbonization rate and performance of steel slag sample |
| CN114620964A (en) * | 2022-03-07 | 2022-06-14 | 北京科技大学 | Method for preparing tailings and micro-aggregate and simultaneously producing magnetite |
| CN115121586A (en) * | 2022-07-04 | 2022-09-30 | 中冶节能环保有限责任公司 | Electric furnace slag treatment method and device |
| CN116377143A (en) * | 2023-04-07 | 2023-07-04 | 安徽工业大学 | Method for recycling iron element in steel slag |
| CN116377143B (en) * | 2023-04-07 | 2024-05-14 | 安徽工业大学 | Method for recycling iron element in steel slag |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106492981B (en) | 2018-06-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106492981B (en) | A kind of method for improving slag iron component recovery | |
| CN102796879B (en) | Method for preparing chromium-containing iron powder by direct reduction of calcium-free chromium slag | |
| WO2019071788A1 (en) | Manufacturing method using copper and iron containing mixing slag | |
| NZ305808A (en) | Cement from slags following reduction of iron oxide then reduction to chromium or vanadium ferroalloys | |
| CN106521148A (en) | Method for preparing high carbon ferro-chrome by fusible chrome fine ore | |
| CN105331805A (en) | Method for manufacturing high-iron manganese ore composite sintering ores | |
| CN102296153A (en) | Novel premelting dephosphorization agent for steel making and preparation method thereof | |
| CN1718554A (en) | Treatment method of vanadium containing converter steel slag | |
| CN105579598B (en) | Method and mineral hydraulic adhesive for handling slag | |
| CN105506226A (en) | Method for carrying out pre-desiliconization, pre-decarburization and pre-dephosphorization on molten iron in molten iron tank | |
| CN101748235A (en) | A kind of metallurgical auxiliary material fluxing agent and preparation method thereof | |
| CN106755658A (en) | A kind of method of the metallurgical also original production of titanium-containing slag | |
| JP2010105826A (en) | Producing method of slag for cement raw material | |
| CN110453025A (en) | A kind of method that high calcium v-bearing steel slag smelts the rich vanadium pig iron | |
| CN102994688B (en) | Pretreatment technology of terminal steel slag in converter | |
| CN105039700B (en) | It is a kind of to improve the reduction volatilization method of lead in Zinc Hydrometallurgy Residue, Zinc volatilization rate | |
| CN108977621A (en) | A kind of smelting process of high carbon ferro-chrome | |
| CN107858530A (en) | A kind of antimony sulfide ore oxygen-enriched smelting method | |
| CN107354365A (en) | Ferroalloy smelting auxiliary agent and its application process | |
| CN101280368B (en) | Stibium blast furnace treatment method using oxygenized air | |
| CN104178599B (en) | The desulfurization slag properties-correcting agent of hot metal containing V-Ti and sulfur method | |
| CN106048122A (en) | Method for reduced treatment of nickel residue through slag bath | |
| JP2000319047A (en) | Reforming treatment of stainless steel refining slag | |
| Cavaliere et al. | Basic oxygen furnace: most efficient technologies for greenhouse emissions abatement | |
| Wang et al. | Industrial application of large rotary kiln for recovery of vanadium from vanadium slag added MnVO4 in calcium roasting process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |