CN109457117A - A kind of method of valuable constituent element comprehensive reutilization in steel slag - Google Patents
A kind of method of valuable constituent element comprehensive reutilization in steel slag Download PDFInfo
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- CN109457117A CN109457117A CN201811366079.4A CN201811366079A CN109457117A CN 109457117 A CN109457117 A CN 109457117A CN 201811366079 A CN201811366079 A CN 201811366079A CN 109457117 A CN109457117 A CN 109457117A
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- steel slag
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/04—Working-up slag
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/14—Cements containing slag
- C04B7/147—Metallurgical slag
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/0006—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/008—Use of special additives or fluxing agents
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B47/00—Obtaining manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
- C22B5/04—Dry methods smelting of sulfides or formation of mattes by aluminium, other metals or silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/001—Dry processes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Metallurgy (AREA)
- Mechanical Engineering (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Processing Of Solid Wastes (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention discloses a kind of methods of constituent element comprehensive reutilization valuable in steel slag, belong to field of metallurgy, it is a kind of utilization silicon ash modification, the method of Fe-Mn alloy in aluminium ash reduction recycling molten steel slag, the present invention can be such that the valuable resources such as steel slag, aluminium ash, the iron in silicon ash, manganese are effectively recycled, the tailings generated simultaneously can also recycle, realize the comprehensive utilization of steel slag resource, " resource+energy " ecology characteristic is taken into account, has the advantages that low simple process, production cost, energy-saving and emission-reduction, no pollution.
Description
Technical field
The present invention relates to the comprehensive utilization of metallurgical solid waste resource, especially a kind of processing method of steel slag belongs to
Field of metallurgy.
Background technique
With the development of global industry, resource, energy and environment problem become increasingly conspicuous, and having become restriction global economy can
The main problem of sustainable development, wherein resource problem is key, and energy and environment problem is basis.Steel slag is steelmaking process
Discarded object of power boiler discharge, accounts for 40% or more of solid waste discharge amount in entire steel and iron industry, and China is steel-making big country, steel
Slag yield is about 10%~20% or so of crude steel amount, and only steel slag yield in 2017 is about 1.2 hundred million tons, national steel slag burden
Up to 1,300,000,000 tons or more, steel slag accumulation does not only take up a large amount of soils, seriously affects ecological environment, also causes a large amount of valuable in steel slag
The waste of element and physical sensible heat.Although the comprehensive utilization of vessel slag both at home and abroad at present is reduced there are many kinds of the methods discharged,
But mainly steel slag is cooled to after solids be pocessed and utilize again from converter discharge, including recycling metallic iron, sinter
Additive, synthetic slag raw material, improvement soil and converter slag cement etc..These processing methods not only need to increase additional
Equipment and place, investment and operating cost are relatively high, and the added value of institute's article of manufacture is lower, and valuable constituent element and high temperature in slag
Sensible heat is not also sufficiently recycled and is utilized, additionally due to the basicity of slag is higher, there are a large amount of free CaOs, is unable to image height furnace
Slag equally carries out large-scale low-cost industrialized utilization.
Silicon ash is to generate Antaciron and SiO and Si gas by oxygen rapid oxidation in air and condense and shape when industrial silicon
At the ultra-fine siliceous powder body material of one kind.Silicon ash density is less about for 2.2g/cm3, bulk density is about 200~350kg/m3, put down
Equal partial size is about 0.1um, and surface area is about 15000~25000m2/ kg, activity are very high.According to source difference, ingredient is
Difference, wherein SiO2For 98~84%, FeO+Fe2O3It is 8.0~0.5%, and price is in 800 yuan/t or so.Recent years, I
State's ferrosilicon annual output is at 4,000,000 tons or more, if calculated with producing 1t ferrosilicon discharge 0.2t silicon ash, the annual average discharge of silicon ash
About 800,000 tons.A portion is discharged into atmosphere, causes serious atmosphere pollution, and another part is largely stored up, caused
The pollution of ambient enviroment also increases burden to enterprise.Although a large amount of silicon ash is for cement processed, glass, ceramics etc. in recent years
Field, but its added value is lower, does not make full use of its valuable element iron.
Aluminium ash is the product of the slag that generates after cooling processing, ingredient 15 in electrolytic aluminium or casting aluminium production technology
~30% metallic aluminium, 30~60%Al2O3And a small amount of SiO2, the oxides such as CaO, MgO.In aluminium fusion process, molten aluminum per ton
About generate 11~12kg aluminium ash.It is fluctuated according to ingredient, the price of aluminium ash is at 1000 yuan/ton or so.Aluminum current ash is mainly used for
Recycle metallic aluminium, synthetic material (such as aluminium polychloride, Brown Alundum, construction material), electric furnace smelting desulfurization.But these processing sides
Method will not only increase additional facilities, wherein metallic aluminium and Al2O3It does not obtain compared with good utilisation.
It would therefore be highly desirable to carry out the new technology that valuable constituent element and physical thermal recycle in a kind of steel slag, sufficiently recycling wherein
Iron, promoter manganese, tailings obtains modification and reaches available purpose, this not only improves the development and utilization of secondary resource, and advantageous
In built environment, friendly, sustainable development the harmonious smelter of green, is enterprise's steel slag, silicon ash, the resource utilization of aluminium ash
A kind of new method is provided.
Summary of the invention
The technical problem to be solved by the invention is to provide a kind of method of constituent element comprehensive reutilization valuable in steel slag, energy
Recycle the iron in steel slag, promoter manganese effectively, at the same generate tailings can recycle, realize steel slag, silicon ash,
The comprehensive utilization of aluminium ash resource takes into account " resource+energy " ecology characteristic, has that simple process, production cost are low, energy saving subtract
The advantages of row, no pollution.
In order to solve the above technical problems, the technical scheme adopted by the invention is that:
The method of valuable constituent element comprehensive reutilization, is modified using silicon ash in a kind of steel slag, aluminium ash reduction recycling molten steel
The method of Fe-Mn alloy in slag.
Technical solution of the present invention further improvement lies in that: include the following steps:
A. raw material preparation and charging: preparing molten steel slag, modification agent silicon ash, reducing agent aluminium ash, first by quantitative silicon ash and
Aluminium ash is packed into Heating Reduction Furnace for Tungsten in proportion, then molten steel slag is poured into；
B. heating reduction: after charging, heating and keep the temperature, and restores aluminium ash, silicon ash, the valuable constituent element in steel slag, obtains
To high added value Fe-Mn alloy；
C. it skims, go out alloy: after emptying the tailings in furnace, releasing alloy, close heating system.
Technical solution of the present invention further improvement lies in that: in step A the additional amount of reducing agent aluminium ash be steel slag total weight
35%~55%, and the granularity of aluminium ash≤100 mesh.
Technical solution of the present invention further improvement lies in that: in step A the additional amount of modification agent silicon ash be steel slag total weight
15%~20%, and the granularity of silicon ash≤100 mesh.
Technical solution of the present invention further improvement lies in that: heating temperature is 1450 DEG C~1500 DEG C, when heat preservation in step B
Between be 1~1.5 hour.
Technical solution of the present invention further improvement lies in that: the steel slag be molten steel slag, Heating Reduction Furnace for Tungsten is electric furnace.
By adopting the above-described technical solution, the technological progress achieved by the present invention is:
1, the present invention provides a kind of methods of constituent element comprehensive reutilization valuable in steel slag, can make steel slag, aluminium ash, silicon
Iron, promoter manganese in ash are effectively recycled, and the Fe-Mn alloy of high added value is generated, the production work relative to traditional ferroalloy
Skill not only reduces energy consumption, reduces waste and noise pollution, while the tailings generated is recycled, and steel is realized
The comprehensive utilization of slag, silicon ash, aluminium ash resource takes into account " resource+energy " ecology characteristic, have simple process, production cost it is low,
The advantages of energy-saving and emission-reduction, no pollution；
2, the basicity of steel slag is 2.0 or more, and there are a large amount of high melting compound 2CaOSiO2、3CaO·SiO2,
The oxide of middle iron is mainly with the presence of fayalite low-melting compound, with the reduction of FeO in slag, the fusing point and viscosity of slag into
One step increases, and influences the progress of reaction, and modification agent silicon ash is added, on the one hand can make high-melting-point composite oxides (2CaO
SiO2、3CaO·SiO2) it is changed into the CaOSiO of low melting point2, improve the physical and chemical performance of slag, largely have in another aspect silicon ash
Valence elemental iron can also be recovered；In addition, using aluminium ash as reducing agent, the metallic aluminium in aluminium ash can be not only made full use of, and
Al2O3Steel slag physical and chemical performance can further be improved with the CaO low melting point oxide generated, be conducive to valuable oxide in slag also
It is former；
3, Heating Reduction Furnace for Tungsten uses electric furnace, does not need another oil (gas) filling device, and has the advantages that heating speed is fast, environmentally friendly；
4, when the granularity of modification agent and reducing agent≤100 mesh, the contact area of solid-liquid is increased, is conducive to the quick of reaction
It carries out, the valuable elements such as iron, manganese in slag can be reduced to the maximum extent, if modification agent granularity is too big, be unfavorable for anti-
The progress answered, modification agent granularity is too small, then more energy need to be expended when crushing；
5, steel slag is molten steel slag, takes full advantage of the own physical heat of slag, low energy consumption, improves production efficiency；
6, the main component of tailings is CaO-MgO-Al2O3-SiO2Quaternary oxide, and quaternary oxide content is up to
80% or more, it can be used as the raw material of metallurgical returning charge or manufacture of cement, secondary cycle recycling can be carried out, waste residue is efficiently solved and account for
The problem of ground, realizing turns waste into wealth；
7, adaptability to raw materials of the present invention is strong, is applicable to various types of steel slags, silicon ash, aluminium ash, the rate of recovery of iron, manganese
Height, the rate of recovery are up to 90% or more, and the efficient circulation for realizing resource utilizes.Low energy consumption, high production efficiency for entire production process,
Reduce the discharge of pollutant, it is higher to obtain value-added content of product, economic and environment-friendly, efficiently solves steel slag, silicon ash, in aluminium ash
The problems such as a large amount of valuable elements are lost and waste residue takes up an area.
Specific embodiment
The present invention is described in further details below with reference to embodiment:
The method of valuable constituent element comprehensive reutilization, is modified using silicon ash in a kind of steel slag, aluminium ash reduction recycling molten steel
The method of Fe-Mn alloy in slag, comprising the following steps:
A. raw material preparation and charging: prepare molten steel slag, modification agent silicon ash, reducing agent aluminium ash, first by quantitative silicon ash, aluminium
Ash is packed into Heating Reduction Furnace for Tungsten in proportion, and Heating Reduction Furnace for Tungsten is electric furnace, does not need another oil (gas) filling device, and heating speed is fast, then will melting
Steel slag pours into, and it is uniform to be conducive to silicon ash, aluminium ash, the ingredient of molten steel slag in the process of pouring into；
The additional amount of reducing agent aluminium ash is the 35%~55% of steel slag total weight, can not only make full use of the metal in aluminium ash
Aluminium, and Al2O3Steel slag physical and chemical performance can further be improved with the CaO low melting point oxide generated, be conducive to valuable oxidation in slag
The reduction of object；
The additional amount of modification agent silicon ash is the 15%~20% of steel slag total weight, can make high-melting-point composite oxides
(2CaO·SiO2、3CaO·SiO2) it is changed into the CaOSiO of low melting point2, improve the physical and chemical performance of slag, and a large amount of in silicon ash
Valuable element iron can also be recovered；
The granularity of lime and aluminium ash≤100 mesh, increase the contact area of solid-liquid, be conducive to reaction quick progress,
The valuable elements such as iron, manganese in slag can be reduced to the maximum extent, if granularity is too big, be unfavorable for the progress of reaction, grain
Degree is too small, then more energy need to be expended when crushing；
B. heating reduction: after charging, heating and keep the temperature, and heating temperature is 1450 DEG C~1500 DEG C, soaking time 1
~1.5 hours, makes aluminium ash, silicon ash, the valuable constituent element reduction in steel slag, obtain high added value Fe-Mn alloy；
Following reaction occurs in vanadium slag in entire reduction process:
2CaO·SiO2+SiO2=2 (CaOSiO2) (1)
3CaO·SiO2+2SiO2=3 (CaOSiO2) (2)
3CaO+Al2O3=3CaOAl2O3 (3)
12CaO+7Al2O3=12CaO7Al2O3 (4)
CaO+Al2O3+2SiO2=CaOAl2O3·2SiO2 (5)
2CaO+Al2O3+SiO2=2CaOAl2O3·SiO2 (6)
3FexO+2Al=3xFe+Al2O3 (7)
Fe2O3+ 2Al=2Fe+Al2O3 (8)
3MnO+2Al=3Mn+Al2O3 (9)
C. it skims, go out alloy: after emptying the tailings in furnace, releasing alloy, close heating system, the main component of tailings is
CaO-MgO-Al2O3-SiO2Quaternary oxide, and quaternary oxide content is up to 80% or more, can be used as metallurgical returning charge or water processed
The raw material of mud.
Embodiment 1:
Converter slag is melted using 1#, ingredient is CaO 45.77%, SiO218.96%, Fe2O317.83%, MgO
8.39%, Al2O33.48%, MnO 2.78%, P2O51.26%, TiO21.53%；1# silicon ash ingredient is SiO2
85.12%, Al2O32.23%, (FeO+Fe2O3) 7.54%, CaO 2.12%, MgO 2.01%, Na2O 0.82%, MnO
0.16%；1# aluminium ash component is SiO25.42%, Al2O331.53%, Al 24.25%, (FeO+Fe2O3) 0.74%, CaO
1.52%, MgO 2.52%, Na2O 2.82%, MnO 0.86%, other 30.34%.
In a kind of steel slag valuable constituent element comprehensive reutilization method the following steps are included:
A. raw material preparation and charging: prepare 1# melting converter slag, 1# silicon ash, 1# aluminium ash, first add 1# silicon ash, 1# aluminium ash
Enter in electric furnace, is pouring into 1# melting converter slag, 1# silicon ash and 1# aluminium ash additional amount are respectively 1# melting converter slag total weight
15% and 35%, granularity≤100 mesh.
B. heating reduction: after charging, electric arc heated keeps the temperature 1 hour to 1450 DEG C, makes aluminium ash, silicon ash, in steel slag
Valuable group of rod iron, manganese, Si reduction obtain high added value Fe-Mn alloy.
C. it skims, go out alloy: after emptying the tailings in furnace, releasing alloy, close heating system.
Iron grade is 82.40% in the alloy obtained through Reduced separating, the rate of recovery 94%；Manganese grade is 14.20%, is returned
Yield is 91%.CaO-MgO-Al in tailings2O3-SiO2Quaternary oxide is up to 85% or more, as metallurgical returning charge by recycling
It utilizes.
Using 1# melting converter slag, embodiment 5~8 and comparative example 4~6 use 2# for Examples 1 to 4 and comparative example 1~3
Electric furnace slag is melted, 1# melts converter slag and the component list of 2# melting electric furnace slag is as shown in table 1,1,2,4~6 and of embodiment
Comparative example 2,5,6 uses 1# silicon ash, and embodiment 3,7,8 and comparative example 1,3,4 use 2# silicon ash, 1# silicon ash and 2# silicon ash composition
Table is as shown in table 2, and Examples 1 to 3,5~7 and comparative example 1,2,4,5 are used using 1# aluminium ash, embodiment 4,8 and comparative example 3,6
2# aluminium ash, 1# aluminium ash and 2# aluminium ash composition table are as shown in table 3, and table 4 and table 5 are respectively different embodiments and different comparative examples
Content and yield.
1 variety classes steel slag component list of table
2 variety classes silicon ash component list of table
3 variety classes aluminium ash component table of table
The different embodiment tables of table 4
The different comparative example tables of table 5
Table 4 can be obtained with the comparison of table 5: comparative example 1 is compared with embodiment 1, and silicon ash accounts for the total weight of steel slag by 15% decline
To 10%, comparative example 2 is compared with embodiment 3, and the total weight that silicon ash accounts for steel slag rises to 30% by 20%, and iron, the yield of manganese are fast
Speed decline, this is primarily due to physical and chemical performance (the viscosity, fusing point) improvement that suitable modification agent is conducive to slag, kinetics item
Part is good, thus, silicon ash account for steel slag total weight be 15%~20% when, iron, manganese yield reach 90% or more, effect
Preferably.
Comparative example 3 is compared with embodiment 4, and aluminium ash accounts for the total weight of steel slag and drops to 25% by 35%, comparative example 4 and is implemented
Example 5 is compared, and aluminium ash accounts for the total weight of steel slag and rises to 65% by 55%, iron, manganese yield decline rapidly, this is mainly due to aluminium
When ash content is higher, high melting compound can be generated, is unfavorable for reaction and carries out, and reduction dosage is inadequate when content is lower, thus
Can obtain, aluminium ash account for steel slag total weight be 35%~65% when, iron, manganese yield reach 90% or more, obtained effect compared with
It is good.
Comparative example 5 is compared with embodiment 6, when temperature falls to 1300 DEG C by 1450 DEG C, iron, manganese yield rapidly under
Drop, this is mainly the too low reduction for being unfavorable for iron, manganese of temperature；Comparative example 6 is compared with embodiment 7, and temperature is risen to by 1470 DEG C
1600 DEG C, yield almost no change of iron, manganese, and temperature improves 130 DEG C, the electric energy of electric furnace consumption but increases very much, it can thus be concluded that
When heating temperature is 1450 DEG C~1500 DEG C, iron, the yield of manganese are preferable, and power consumption is lower.
Claims (6)
1. a kind of method of valuable constituent element comprehensive reutilization in steel slag, it is characterised in that: modified using silicon ash, aluminium ash reverts back
The valuable constituent element of molten steel slag is received, the method for Fe-Mn alloy is smelted.
2. the method for valuable constituent element comprehensive reutilization in a kind of steel slag according to claim 1, it is characterised in that: including
Following steps:
A. raw material preparation and charging: prepare molten steel slag, modification agent silicon ash, reducing agent aluminium ash, first by quantitative silicon ash and aluminium ash
It is packed into Heating Reduction Furnace for Tungsten in proportion, then molten steel slag is poured into；
B. heating reduction: after charging, heating and keep the temperature, and restores aluminium ash, silicon ash, the valuable constituent element in steel slag, obtains height
Added value Fe-Mn alloy；
C. it skims, go out alloy: after emptying the tailings in furnace, releasing alloy, close heating system.
3. the method for valuable constituent element comprehensive reutilization in a kind of steel slag according to claim 2, it is characterised in that: step
The additional amount of reducing agent aluminium ash is the 35%~55% of steel slag total weight in A, and the granularity of aluminium ash≤100 mesh.
4. the method for valuable constituent element comprehensive reutilization in a kind of steel slag according to claim 2, it is characterised in that: step
The additional amount of modification agent silicon ash is the 15%~20% of steel slag total weight in A, and the granularity of silicon ash≤100 mesh.
5. the method for valuable constituent element comprehensive reutilization in a kind of steel slag according to claim 2, it is characterised in that: step
Heating temperature is 1450 DEG C~1500 DEG C in B, and soaking time is 1~1.5 hour.
6. the method for valuable constituent element comprehensive reutilization in a kind of steel slag according to claim 2, it is characterised in that: described
Steel slag is molten steel slag, and Heating Reduction Furnace for Tungsten is electric furnace.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110550663A (en) * | 2019-09-30 | 2019-12-10 | 北方民族大学 | method for recycling iron oxide in steel slag |
| CN114561540A (en) * | 2022-04-14 | 2022-05-31 | 江苏大学 | Method for efficiently extracting, separating and recovering chromium from stainless steel slag |
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| CN106282746A (en) * | 2016-08-19 | 2017-01-04 | 东北大学 | A kind of method of slag bath reduction treatment electric furnace stainless steel slag |
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| JPS53117601A (en) * | 1977-03-23 | 1978-10-14 | Sumitomo Metal Ind Ltd | Recovering method for valuable metals in stainless steel slag |
| CN101914639A (en) * | 2010-09-08 | 2010-12-15 | 北京科技大学 | Method for recycling iron on line from iron-containing industrial slag and preparing glass ceramics frit |
| CN103757152A (en) * | 2014-01-03 | 2014-04-30 | 中冶东方工程技术有限公司 | Method and device for treating steel slag |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110550663A (en) * | 2019-09-30 | 2019-12-10 | 北方民族大学 | method for recycling iron oxide in steel slag |
| CN114561540A (en) * | 2022-04-14 | 2022-05-31 | 江苏大学 | Method for efficiently extracting, separating and recovering chromium from stainless steel slag |
| CN114561540B (en) * | 2022-04-14 | 2024-06-07 | 江苏大学 | Method for efficiently extracting, separating and recycling chromium in stainless steel slag |
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Effective date of registration: 20191008 Address after: 056038 Guangming South Street, Hebei, Handan, No. 199 Applicant after: HEBEI University OF ENGINEERING Applicant after: HEBEI WENFENG IRON AND STEEL Co.,Ltd. Address before: 056038 Guangming South Street, Hebei, Handan, No. 199 Applicant before: hebei university of engineering |
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Application publication date: 20190312 |