CN107326175B - A method of reducing high-chromic vanadium-titanium ferroferrite sinter mixture fusing point - Google Patents
A method of reducing high-chromic vanadium-titanium ferroferrite sinter mixture fusing point Download PDFInfo
- Publication number
- CN107326175B CN107326175B CN201710537399.0A CN201710537399A CN107326175B CN 107326175 B CN107326175 B CN 107326175B CN 201710537399 A CN201710537399 A CN 201710537399A CN 107326175 B CN107326175 B CN 107326175B
- Authority
- CN
- China
- Prior art keywords
- mass content
- mixture
- sinter
- present
- mine
- 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
-
- 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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/16—Sintering; Agglomerating
-
- 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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/2406—Binding; Briquetting ; Granulating pelletizing
-
- 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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/242—Binding; Briquetting ; Granulating with binders
- C22B1/243—Binding; Briquetting ; Granulating with binders inorganic
-
- 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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/248—Binding; Briquetting ; Granulating of metal scrap or alloys
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention provides a kind of methods for reducing high-chromic vanadium-titanium ferroferrite sinter mixture fusing point, comprising: by mixture pelletizing, cloth and ignition sintering；It is characterized in that, containing additive in the mixture；The additive includes boric acid, manganese mineral powder and steel slag.The present invention uses boric acid, manganese mineral powder and steel slag simultaneously, under the comprehensive function of boric acid, manganese mineral powder and steel slag, it can reduce the fusing point of high-chromic vanadium-titanium ferroferrite sintering feed, improve sintering process, generate more high-quality silicates and calcium ferrite Binder Phase, improve the mineral composition and structure of sinter, to achieve the purpose that improve sinter quality and yield rate.
Description
Technical field
The present invention relates to vanadium titano-magnetite technical field more particularly to a kind of reduction high-chromic vanadium-titanium ferroferrite sintered compounds
Expect the method for fusing point.
Background technique
Hongge Deposit is one of four big mines of Panxi Diqu, with original mine (PZH vanadic-titanomagnetite) resource by
Gradually exhausted and Baima mine, which has been exploited, climbs steel raw material site important in the future using for many years, Hongge Deposit becomes.Hongge Deposit is removed and is climbed
Branch flower vanadium titano-magnetite equally has high titanium, low SiO2, coarse size the characteristics of outside, also contain higher chromium, due to Cr2O3It is high
Fusing point (2400 DEG C) mineral cause the fusing point of red lattice high-chromic vanadium titanium magnet ore concentrate sinter mixture high, generate in sintering process
Low melting point amount of liquid phase it is few, it is the low output of sinter, of poor quality, this be red lattice high-chromic vanadium-titanium ferroferrite be sintered one it is most prominent
Difficult point.Red lattice high-chromic vanadium titanium magnet ore concentrate will realize production application, in addition to using the technical measures of intensified-sintered process, most
Crucial also resides in the fusing point for being effectively reduced its sintering feed.Therefore, research and development reduce the sintering of high-chromic vanadium-titanium ferroferrite fusing point
Reinforcement technique has the survival and development for rationally utilizing high-chromic vanadium titanium ore resource, reducing production cost and climbing steel important
Effect.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of reduction high-chromic vanadium-titanium ferroferrite sinter mixture fusing points
Method, method provided by the invention can significantly reduce the fusing point of high-chromic vanadium-titanium ferroferrite sinter.
The present invention provides a kind of methods for reducing high-chromic vanadium-titanium ferroferrite sinter mixture fusing point, comprising: will mix
Pelletizing, cloth and ignition sintering after material plus water；It is characterized in that,
Contain additive in the mixture；
The additive includes boric acid, manganese mineral powder and steel slag.
Preferably, mass content of the boric acid in mixture is 0.05~0.3%.
Preferably, mass content of the manganese mineral powder in mixture is 1~3%.
Preferably, mass content of the steel slag in mixture is 1~4%.
Preferably, the mixture includes:
Additive, iron ore, flux and fuel；
The iron ore includes high-chromic vanadium-titanium ferroferrite, Brazilian mine, Mauritanian mine, domestic high-grade iron ore, middle grade
Process mine and gas ash.
Preferably, mass content of the high-chromic vanadium-titanium ferroferrite in mixture is 48~54%；
Mass content of the domestic high-grade iron ore in mixture is 15~20%；
Mass content of the middle grade processing mine in mixture is 2.8~8.5%；
Mass content of the gas ash in mixture is 2~4%.
Preferably, the flux includes quick lime and lime stone.
Preferably, mass content of the quick lime in mixture is 3.5~6.5%；
Mass content of the lime stone in mixture is 3.7~6.8%.
Preferably, mass content of the fuel in mixture is 4~6%.
Preferably, it is 7.4~7.6% that the dosage of moisture, which is mixture quality, in the balling process.
In the present invention, the B that boric acid is formed2O3With low fusing point (450 DEG C or so), it can be the same as many oxide shapes
At eutectic and fusing point is reduced, the generation of liquid phase core can be promoted during the sintering process, vanadium titano-magnetite can be significantly reduced
Fusing point increases amount of liquid phase, improves the intensity and yield rate of sinter.
The mass content of MnO is active in 14% or so, MnO property in manganese mineral powder, easily forms the low of manganese during the sintering process
Fusing point Binder Phase has obvious effect to the fusing point for reducing vanadium titano-magnetite, can increase sintering amount of liquid phase, improve the strong of sinter
Degree and yield rate.
Steel slag is the waste residue that generates in STEELMAKING PRODUCTION, in steel slag containing iron oxide, magnesia, calcium oxide, manganese oxide etc. at
Point, steel slag softening temperature is low and object is mutually uniform, and liquid phase, which generates, can early promote substance reaction and spread to surrounding rapidly, makes to bond
Mutually increase and be evenly distributed, compact structure is so as to improve the phase composition of sinter mine and structure；And since steel slag itself is ripe
Material, and contain a certain number of calcium ferrites, it can be used as the reinforcing agent of sinter, have some improvement work to the intensity of sinter
With the supplying of steel slag can also inhibit the phase transformation of dicalcium silicate to reduce pulverization rate, significantly improve the macroscopical and microcosmic of sinter
Structure, so that the drum strength of sinter and yield rate be made to improve.
The present invention uses boric acid, manganese mineral powder and steel slag simultaneously, can under the comprehensive function of boric acid, manganese mineral powder and steel slag
The fusing point of high-chromic vanadium-titanium ferroferrite sintering feed is reduced, sintering process is improved, more high-quality silicates is generated and calcium ferrite is viscous
Phase is tied, the mineral composition and structure of sinter are improved, to achieve the purpose that improve sinter quality and yield rate.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff it is improved or retouching all other example, shall fall within the protection scope of the present invention.
The present invention provides a kind of methods for reducing high-chromic vanadium-titanium ferroferrite sinter mixture fusing point, including by mixture
Pelletizing, cloth and ignition sintering are carried out after adding water；It is characterized in that, contain additive in the mixture, the additive packet
Include boric acid, manganese mineral powder and steel slag.
In the present invention, mass content of the boric acid in mixture is preferably 0.05~0.3%, and more preferably 0.1
~0.25%, most preferably 0.15~0.2%, the most preferably 0.05%, 0.13%, 0.22% or 0.30%.
In the present invention, the boric acid is Weak monoacid, the B that boric acid is formed2O3With low fusing point (450 DEG C or so), it
Eutectic can be formed with many oxides and reduces fusing point, can promote the generation of liquid phase core, Ke Yixian during the sintering process
The fusing point for reducing high-chromic vanadium-titanium ferroferrite is write, increases amount of liquid phase, improves the intensity and yield rate of sinter.The present invention is to described
The source of boric acid does not have special limitation, using boric acid well known to those skilled in the art, can be bought and be obtained by market.
In the present invention, mass content of the manganese mineral powder in mixture is preferably 1~3%, more preferably 1.5~
2.5%, most preferably 1%, 1.7%, 2.4% or 3%.In the present invention, the ingredient of the manganese mineral powder preferably includes:
The TFe of 28~32wt%；
The SiO of 26~30wt%2；
The CaO of 0.1~0.3wt%；
The Al of 1~2wt%2O3；
The MnO of 13~15wt%.
In the present invention, mass content of the full iron in manganese mineral powder is preferably 29~31%, and more preferably 30%；
SiO2Mass content in manganese mineral powder is preferably 27~29%, and more preferably 28%；Mass content of the CaO in manganese mineral powder is excellent
It is selected as 0.15~0.25%, more preferably 0.2%；Al2O3Mass content in manganese mineral powder is preferably 1.2~1.8%, more excellent
It is selected as 1.4~1.6%, most preferably 1.5%；Mass content of the MnO in manganese mineral powder is preferably 13.5~14.5%, more preferably
It is 14%.
In the present invention, the granularity of the manganese mineral powder is preferably 0.1~3mm, more preferably 0.5~2.5mm, most preferably
1~2mm.The present invention does not have special limitation to the source of the manganese mineral powder, can be bought and be obtained by market.
In the present invention, the manganese mineral powder is the iron ore containing manganese, also known as Ferromanganese Ore, the mass content of MnO in manganese mineral powder
It is active in 14% or so, MnO property, the low melting point Binder Phase of manganese is easily formed during the sintering process, to reduction vanadium titano-magnetite
Fusing point has obvious effect, can increase sintering amount of liquid phase, improves the intensity and yield rate of sinter.
In the present invention, mass content of the steel slag in mixture is preferably 1~4%, more preferably 1.5~
3.5%, most preferably 2~3%, the most preferably 1%, 2%, 3% or 4%.
In the present invention, the ingredient of the steel slag preferably includes:
The TFe of 19~23wt%；
The FeO of 14~17wt%；
The SiO of 8~12wt%2；
The CaO of 30~34wt%；
The Al of 3.5~4.5wt%2O3；
The MgO of 7~10wt%；
The V of 0.6~1.0wt%2O5；
The TiO of 0.5~0.9wt%2。
In the present invention, mass content of the full iron in steel slag is preferably 20~22%, and more preferably 21%；FeO
Mass content in steel slag is preferably 15~16%；SiO2Mass content in steel slag is preferably 9~11%, more preferably
10%；Mass content of the CaO in steel slag is preferably 31~33%, and more preferably 32%；Al2O3Mass content in steel slag
Preferably 3.8~4.2%, more preferably 4%；Mass content of the MgO in steel slag is preferably 8~9%, and more preferably 8.5%；
V2O5Mass content in steel slag is preferably 0.7~0.9%, and more preferably 0.8%；TiO2Mass content in steel slag is excellent
It is selected as 0.6~0.8%, more preferably 0.7%.
In the present invention, the granularity of the steel slag is preferably 0.1~3mm, more preferably 0.5~2.5mm, and most preferably 1
~2mm.The present invention does not have special limitation to the source of the steel slag, can be by collecting the waste residue generated in steel-making, the city Ye Keyou
Field purchase obtains.
In the present invention, the steel slag is the waste residue generated in STEELMAKING PRODUCTION, contains iron oxide, magnesia, oxygen in steel slag
Change calcium, the ingredients such as manganese oxide, steel slag softening temperature is low and object is mutually uniform, liquid phase generate morning can promote substance reaction and rapidly to
Surrounding is spread, and so that Binder Phase is increased and is evenly distributed, compact structure is so as to improve the phase composition of sinter mine and structure；And by
In steel slag itself be clinker, and contain a certain number of calcium ferrites, can be used as the reinforcing agent of sinter, to the intensity of sinter
It has some improvement, the supplying of steel slag can also inhibit the phase transformation of dicalcium silicate to reduce pulverization rate, significantly improve sintering
The macroscopic view and microstructure of mine, so that the drum strength of sinter and yield rate be made to improve.
In the present invention, the preparation method of the additive is preferred are as follows:
Boric acid is dissolved in water, is configured to solution；
It will be added in solution after manganese mineral powder and steel slag, obtain additive.
The present invention by, with addition of boric acid, manganese mineral powder and steel slag, reducing the fusing point of sintering feed in mixture, sinter
Quality and yield rate are greatly improved and fuel consumption declines.The present invention uses boric acid, manganese mineral powder and steel slag simultaneously, in boron
Under the comprehensive function of acid, manganese mineral powder and steel slag, the fusing point of high-chromic vanadium-titanium ferroferrite sintering feed can reduce, improve sintered
Journey generates more high-quality silicates and calcium ferrite Binder Phase, improves the mineral composition and structure of sinter, to reach raising
The purpose of sinter quality and yield rate.
In the present invention, the mixture preferably includes additive, iron ore, flux and fuel；The additive is above-mentioned
Additive described in technical solution, details are not described herein.
In the present invention, the iron ore preferably includes high-chromic vanadium-titanium ferroferrite, Brazilian mine, Mao Kuang, domestic high grade iron
Mine, middle grade processing mine and gas ash.
In the present invention, mass content of the high-chromic vanadium-titanium ferroferrite in mixture is preferably 48~54%, more
Preferably 50~52%.In the present invention, the ingredient of the high-chromic vanadium-titanium ferroferrite preferably includes:
The TFe of 54~56wt%；
The FeO of 30~35wt%；
The SiO of 3.1~3.7wt%2；
The Cr of 0.5~0.9wt%2O3；
The Al of 2~3wt%2O3；
The MgO of 3~3.5wt%；
The V of 0.4~0.8wt%2O5；
The TiO of 10~13wt%2。
In the present invention, mass content of the full iron in high-chromic vanadium-titanium ferroferrite is preferably 55%；FeO is in high-chromic vanadium
Mass content in titanomagnetite is preferably 31~34%, and more preferably 32~33%；SiO2In high-chromic vanadium-titanium ferroferrite
Mass content be preferably 3.2~3.6%, more preferably 3.3~3.5%, most preferably 3.4%；Cr2O3In vanadium titano-magnetite
In mass content be preferably 0.6~0.8%, more preferably 0.7%；Al2O3Mass content in high-chromic vanadium-titanium ferroferrite
Preferably 0.5~0.7%, more preferably 0.6%；Mass content of the MgO in high-chromic vanadium-titanium ferroferrite be preferably 3.1~
3.4%, more preferably 3.2~3.3%；V2O5Mass content in high-chromic vanadium-titanium ferroferrite is preferably 0.5~0.7%, more
Preferably 0.6%；TiO2Mass content in high-chromic vanadium-titanium ferroferrite is preferably 11~12%.The present invention is to the Gao Ge
The source of type vanadium titano-magnetite does not have special limitation, using red lattice vanadium titano-magnetite well known to those skilled in the art.
In the present invention, mass content of the Brazilian mine in mixture is preferably 0~6%, and more preferably 1~5%,
Most preferably 2~4%；Brazilian mine can not be added.In the present invention, Brazilian mine is that Brazil produces miberal powder, referred to as Brazilian mine.In this hair
In bright, the ingredient of Brazil's mine is preferably included:
The TFe of 61~62.5wt%；
The FeO of 4~7wt%；
The SiO of 5~8wt%2；
The CaO of 0.5~1.5wt%；
The Al of 1~2wt%2O3。
In the present invention, mass content of the full iron in Brazilian mine is preferably 61.5~62%；Matter of the FeO in Brazilian mine
Measuring content is preferably 5~6%；SiO2Mass content in Brazilian mine is preferably 6~7%；Quality of the CaO in Brazilian mine contains
Amount preferably 0.8~1.2%, more preferably 1%；Al2O3Mass content in Brazilian mine is preferably 1.2~1.8%, more excellent
It is selected as 1.4~1.6%.The present invention does not have special limitation to the source of the Brazilian mine, can be bought and be obtained by market.
In the present invention, mass content of the hair mine in mixture is preferably 0~2.5%, more preferably 0.5~
2.5%, most preferably 1~2%, a mao mine can not be added.In the present invention, hair mine is Mauritanian miberal powder, abbreviation hair mine.At this
In invention, the mass content of full iron is preferably 57~60% in Mauritius's fine ore, and more preferably 58~59%；The hair
In ask the mass content of FeO in this fine ore to be preferably 4~6.5%, more preferably 4.5~6.0%；In Mauritius's fine ore
SiO2Mass content be preferably 12.5~14.5%, more preferably 13.0~14.0%, most preferably 13.5%.Brazilian mine and
Hair mine is all import rich ore powder, and weight of iron content is higher (TFe is 60~63%).
In the present invention, mass content of the domestic high-grade iron ore in mixture is preferably 15~20%, more excellent
It is selected as 17~19%, most preferably 18%.Weight of iron content is higher (TFe is 58~60%) in high-grade iron ore.In the present invention
In, the ingredient of the domestic high-grade iron ore preferably includes:
The TFe of 57~59wt%；
The FeO of 20~24wt%；
The SiO of 7~11wt%2；
The CaO of 2~4wt%；
The Al of 2~3wt%2O3；
The MgO of 0.5~2wt%；
The V of 0.2~0.6wt%2O5；
The TiO of 1~2wt%2。
In the present invention, mass content of the full iron in domestic high-grade iron ore is preferably 58%；FeO is in domestic height
Mass content in grade iron ore is preferably 21~23%, and more preferably 22%；SiO2Quality in domestic high-grade iron ore
Content is preferably 8~10%, and more preferably 9%；Mass content of the CaO in domestic high-grade iron ore is preferably 3%；Al2O3?
Mass content in domestic high-grade iron ore is preferably 2.5%；Mass content of the MgO in domestic high-grade iron ore is preferably 1
~1.5%, more preferably 1.2~1.3%；V2O5Mass content in domestic high-grade iron ore is preferably 0.3~0.5%, more
Preferably 0.4%；TiO2Mass content in domestic high-grade iron ore is preferably 1.2~1.8%, more preferably 1.4~
1.6%.The present invention does not have special limitation to the source of the domestic high-grade iron ore, can be bought and be obtained by market.
In the present invention, mass content of the middle grade processing mine in mixture is preferably 2.8~8.5%, more excellent
It is selected as 3~8%, most preferably 4~7%.In the present invention, middle grade processing mine can be in plus powder, weight of iron therein contain
Measure medium (TFe is 35~50%).In the present invention, in described plus the ingredient of powder preferably includes:
The TFe of 40~45wt%；
The FeO of 20~24wt%；
The SiO of 7~11wt%2；
The CaO of 2~4wt%；
The Al of 2~3wt%2O3；
The MgO of 0.5~2wt%；
The V of 0.2~0.6wt%2O5；
The TiO of 1~2wt%2。
In the present invention, mass content of the full iron in plus in powder is preferably 41~44%, and more preferably 42~43%；
Mass content of the FeO in plus in powder is preferably 21~23%, and more preferably 22%；SiO2Mass content in plus in powder is excellent
It is selected as 8~10%, more preferably 9%；Mass content of the CaO in plus in powder is preferably 3%；Al2O3Quality in plus in powder
Content is preferably 2.5%；Mass content of the MgO in plus in powder is preferably 1~1.5%, and more preferably 1.2~1.3%；V2O5
Mass content in plus in powder is preferably 0.3~0.5%, and more preferably 0.4%；TiO2Mass content in plus in powder is excellent
It is selected as 1.5%.The present invention does not have special limitation in the described plus source of powder, can be bought and be obtained by market.
In the present invention, mass content of the gas ash in mixture is preferably 2~4%, more preferably 2.5~
3.5%, most preferably 3%.In the present invention, gas ash, that is, blast furnace gravitational dust collection ash, since air-flow is mainly in cleaning shaft
Blast furnace gas, blast furnace gas are containing the toxic explosion hazard gases such as CO, therefore the ash that also known as gas ash, i.e. methane gas are taken out of, sintering are matched
The purpose for adding gas ash is mainly refuse reclamation.In the present invention, the gas ash composition preferably includes:
The TFe of 34~37wt%；
The FeO of 10~12wt%；
The SiO of 6~9wt%2；
The CaO of 5~8wt%；
The Al of 3~3.5wt%2O3；
The MgO of 2~3wt%；
The V of 0.1~0.5wt%2O5；
The TiO of 3~6wt%2。
In the present invention, mass content of the full iron in gas ash is preferably 35~36%；Quality of the FeO in gas ash
Content is preferably 11%；SiO2Mass content in gas ash is preferably 7~8%；Mass content of the CaO in gas ash is excellent
It is selected as 6~7%；Al2O3Mass content in gas ash is preferably 3.1~3.4%, and more preferably 3.2~3.3%；MgO exists
Mass content in gas ash is preferably 2.5%；V2O5Mass content in gas ash is preferably 0.2~0.4%, more preferably
It is 0.3%；TiO2Mass content in gas ash is preferably 4~5%.The present invention is not special to the source of the gas ash
Limitation, collect blast furnace gravitational dust collection ash can also by market buy obtain.
In the present invention, the flux preferably includes lime stone and quick lime.In the present invention, the lime stone is mixing
Mass content in material is preferably 3.7~6.8%, and more preferably 4~6%, most preferably 4.5~5.5%.In the present invention,
Mass content of the quick lime in mixture is preferably 3.5~6.5%, and more preferably 4.5~5.5%, most preferably
5%.
Present invention preferably employs twice with addition of method by quick lime with being added in mixture.In the present invention, described mixed
It closes material and preferably by mixed once and secondary is mixed with.Part quick lime is preferably added in the present invention in mixed once, remaining
Quick lime be added in mixture in secondary mixing.In the present invention, second amount that quick lime is added preferably is made a living stone
The 25~75% of grey gross mass, more preferably 40~60%, more preferably 45~55%, most preferably 50%.
In the present invention, mass content of the fuel in mixture is preferably 4~6%, more preferably 4.5~
5.5%, most preferably 5%.In the present invention, the fuel is preferably coke powder and/or anthracite.
In the present invention, the quality of granularity > 3mm preferably accounts for the 12~20% of fuel gross mass in the fuel, more preferably
It is 14~16%；The quality of granularity < 0.28mm preferably accounts for the 10~15% of fuel gross mass, more preferably 12 in the fuel
~13%；The granularity of other fuel is preferably 0.25~3mm, more preferably 0.5~2.5mm, most preferably 1~2mm.
In the present invention, the dosage of the moisture is preferably the 7.4~7.6% of mixture quality, more preferably 7.4 or
7.5%.In the present invention, the mass content of mixed carbon comtent is preferably 4.8~5% in the mixture, and more preferably 4.9%.
In the present invention, mass content of the high-chromic vanadium-titanium ferroferrite in mixture is preferably 48~54%, bar
Mass content of the Xi Kuang in mixture is preferably 0~6%, and mass content of the hair mine in mixture is preferably 0~2.5%,
Mass content of the domestic high-grade iron ore in mixture is preferably 15~20%, quality of the middle grade processing mine in mixture
Content is preferably 1.5~3%, and mass content of the gas ash in mixture is preferably 2~4%, and lime stone is in mixture
Mass content is preferably 3.7~6.8%, and mass content of the quick lime in mixture is preferably 3.5~6.5%.Iron ore contains
Amount can guarantee that the grade (TFe) of sinter is higher within the above range, and cost is relatively low for raw material, and can satisfy blast furnace smelting
The demand of refining.If low-grade iron ore (middle grade iron ore and gas ash) content is higher, high-grade iron ore (Brazilian mine, Mao Kuang, state
Producing high-grade iron ore) content is lower, then and the grade of sinter is lower, is not able to satisfy blast furnace process requirement；If low-grade iron ore
Content is lower, high grade iron mineral content is higher, although the grade of sinter is high, since high-grade Iron ore price is high, causes
The production cost increases.The ratio range of flux is according to the basicity (CaO/SiO of sinter2) determine, match too high or too low cause
Sinter basicity is unqualified, is not able to satisfy the requirement that height is smelted.
Mixture is carried out cloth by the present invention in primary mixer and second drum mixer respectively after mixed pelletizing.The present invention
There is no special limitation to the method for the pelletizing, using the technical solution of pelletizing well known to those skilled in the art.?
In the present invention, the granularity of the obtained pelletizing after the pelletizing is preferably 3~8mm, more preferably 4~6mm.
The present invention does not have special limitation to the method for the cloth, using the skill of cloth well known to those skilled in the art
Art scheme can cloth.In the present invention, the thickness of feed layer of the cloth is preferably 680~720mm, and more preferably 690
~710mm, most preferably 700mm.
The present invention does not have special limitation to the method for the ignition sintering, using igniting well known to those skilled in the art
The technical solution of sintering.In the present invention, the igniting negative pressure during the ignition sintering is preferably 5.5~6.5KPa,
More preferably 5.8~6.2KPa, most preferably 6KPa.In the present invention, negative pressure is sintered during the ignition sintering is preferably
12~13KPa, more preferably 12.5KPa.In the present invention, the firing temperature of the ignition sintering is preferably 1000~1050
DEG C, more preferably 1020~1030 DEG C.In the present invention, the duration of ignition of the ignition sintering is preferably 2~2.5min, more excellent
It is selected as 2.2~2.3min.
The fusing point that chromium type high vanadium iron magnetite can be reduced using method provided by the invention improves the agglutinating property of mixture
Can, to improve Sintering Operation Index；Sintering liquid phase production quantity can be increased, be conducive to generate the high-quality bonding of more calcium ferrites
Phase, and Binder Phase is more evenly distributed, sinter mineral composition and structural improvement, to improve the intensity and yield rate of sinter；
The metallurgical performance that sinter can be improved is conducive to the economic indicator for improving blast furnace process；Production cost can be reduced, dust row is reduced
High-volume, environment is protected.
Raw materials used following embodiment of the present invention is commercial goods.
The ingredient of chromium type high vanadium iron magnetite includes: the TFe of 55.25wt%, the FeO of 30.96wt%, 3.59wt%'s
SiO2, the Cr of 0.71wt%2O3；The Al of 2.57wt%2O3；The MgO of 3.25wt%；The V of 0.61wt%2O5；11.81wt%'s
TiO2。
The ingredient of Brazilian mine includes: the TFe of 62.2wt%, the SiO of the FeO of 5.25wt%, 6.6wt%2, 0.95wt%'s
CaO；The Al of 1.47wt%2O3。
The ingredient of hair mine includes: the TFe, the SiO of the FeO of 5.5wt%, 13.37wt% of 60.75wt%2, 0.1wt%'s
CaO；The Al of 1.12wt%2O3。
The ingredient of domestic high-grade iron ore (the high powder of state) includes: TFe, the FeO of 22wt% of 58.3wt%, 8.9wt%'s
SiO2, the CaO of 2.86wt%；The Al of 2.18wt%2O3；The MgO of 0.95wt%；The V of 0.41wt%2O5；The TiO of 1.47wt%2。
In plus powder become include: 42.53wt% Fe, the SiO of the FeO of 23.76wt%, 9.15wt%2, 3.04wt%
CaO；The Al of 2.30wt%2O3；The MgO of 1.28wt%；The V of 0.42wt%2O5；The TiO of 1.56wt%2。
Gas ash composition includes: the TFe of 35.6wt%, the SiO of the FeO of 11.05wt%, 7.1wt%2, 7.08wt%
CaO；The Al of 3.24wt%2O3；The MgO of 2.25wt%；The V of 0.24wt%2O5；The TiO of 4.62wt%2。
Fuel used is coke powder, and wherein the quality of fuel content of granularity > 3mm is 20%, the combustion of granularity < 0.25mm
Expect that mass content is 15%；
The ingredient of manganese mineral powder used includes: the TFe of 30.12wt%, the SiO of 28.71wt%2, the CaO of 0.12wt%；
The Al of 1.64wt%2O3；The MnO of 14.08wt%.
The ingredient of steel slag used includes: the TFe of 21.85wt%, the SiO of the FeO of 15.67wt%, 10.81wt%2,
The CaO of 32.13wt%；The Al of 3.84wt%2O3；The MgO of 8.02wt%；The V of 0.77wt%2O5；The TiO of 0.69wt%2。
Embodiment 1
By high-chromic vanadium-titanium ferroferrite, Brazilian mine, Mao Kuang, the high powder of state, in plus powder, gas ash, boric acid, manganese mineral powder, part
Quick lime, lime stone, fuel and water carry out mixed once in mixing machine, obtain mixture；
Obtained mixture and remaining quick lime are subjected to secondary mixing in mixing machine, obtain mixture；
The residue Lime Quality is the 45% of whole Lime Qualities；
The mass content of high-chromic vanadium-titanium ferroferrite is 53% in the mixture, and the mass content of Brazilian mine is 5%, hair
The mass content of mine is 2.5%, and the mass content of the high powder of state is 16%, in plus the mass content of powder be 2.8%, the matter of gas ash
Measuring content is 2%, and the mass content of boric acid is 0.06%, and the mass content of manganese mineral powder is 1.2%, and the mass content of steel slag is
1.2%, the mass content of quick lime is 6%, and the mass content of lime stone is 5.24%, and quality of fuel content is 5%, moisture
Mass content be 7.4% (mass content of moisture is the mass percent that moisture accounts for mixing doses, and mix material proportioning is siccative
Amount calculates, and moisture itself is not counted in the mass content of mixture)；
Mixture is subjected to pelletizing, the granularity for obtaining pelletizing is 5mm.
Ignition sintering is carried out after pelletizing is carried out cloth, obtains sinter；
The height of the cloth bed of material is 700mm, and igniting negative pressure is 6KPa, and sintering negative pressure is 12.5KPa, firing temperature 1030
DEG C, duration of ignition 2.25min.
Using JWK-1 type fusing point test automatic control system measure sinter fusing point: will sintering ore sample furnace temperature about
It is put into molybdenum wire furnace at 1100 DEG C, heating rate is 10 DEG C/min, and materialsing incipient melting state occurs (chamfering occurs in sample
When) temperature be its fusing point, the fusing point of sinter that the test embodiment of the present invention 1 is prepared；According to GB8209-87 " sintering
Mine and pellet-drum strength measuring method " standard, test the drum strength of sinter；Burned sinter is poured out, into
Row natural cooling falls 2 times from 2m eminence, is sieved, and takes the percentage meter yield rate of > 10mm grain size content, test sintering
The yield rate of mine；According to:
P=(M1/1000)×(1/A)×(60/t)；
P, usage factor, t/m2×h；
M1, > 10mm finished product sinter quality, kg；
A, sintering area, m2,
T, sintering time, min；
Test the yield of sinter.
According to:
Q=K/P,
Q, solid fuel consumption, kg/t mine；
K, quality of fuel, kg；
P, Sintering Yield, t；
Test solid fuel consumption.
According to GB 13242-91 " using the method for cold rotary drum after the static reduction of iron ore low temperature dusting test " test low temperature
Reduction and pulverization ratio, reducing gas group become CO and N2Volume ratio is 30:70, takes the mass percent less than 3.15mm grade to make low
Warm reduction degradation index (RDI) tests RDI of Sinter (RDI-3.15)。
Test result is that the fusing point for the sinter that the embodiment of the present invention 1 is prepared is 1325 DEG C；Drum strength is
72.1%, yield rate 75.31%, yield 1.351t/m2×h；Solid fuel consumption is 47.79Kg/t mine；Low-temperature reduction
Pulverization rate is 48.25%.Compared with comparative example 1, sinter fusing point prepared by the embodiment of the present invention 1 declines 20 DEG C, and sinter turns
Drum intensity improves 0.87%, and yield rate improves 1.85%, and output increased 2.08%, solid fuel consumption declines 1.64Kg/t mine,
RDI of Sinter (RDI-3.15) have dropped 13.29%.
Embodiment 2
Sinter is prepared according to method described in embodiment 1, unlike the first embodiment, chromium type high in mixture
The mass content of vanadium titano-magnetite is 53%, and the mass content of Brazilian mine is 4.5%, and the mass content of hair mine is 2.5%, and state is high
The mass content of powder is 17%, in plus the mass content of powder be 2.4%, the mass content of gas ash is 2%, and the quality of boric acid contains
Amount is 0.14%, and the mass content of manganese mineral powder is 1.8%, and the mass content of steel slag is 2.2%；The mass content of quick lime is
5.5%, the mass content of lime stone is 4.16%, and quality of fuel content is 4.8%, and the mass content of moisture is 7.45%
(mass content of moisture is not counted in the mass content of mixture)；
The sinter that embodiment 2 is prepared according to the method for embodiment 1 detects, and testing result is the present invention
The fusing point for the sinter that embodiment 2 is prepared is 1304 DEG C；Drum strength is 72.35%, yield rate 75.72%, yield
For 1.356t/m2×h；Solid fuel consumption is 47.24Kg/t mine；Low temperature reduction degradation index is 39.17%.With 1 phase of comparative example
Than sinter fusing point prepared by the embodiment of the present invention 2 declines 41 DEG C, and sintered ore rotary drum strength improves 1.12%, and yield rate improves
2.26%, output increased 2.38%, solid fuel consumption declines 2.19Kg/t mine, RDI of Sinter (RDI-3.15)
Have dropped 22.37%.
Embodiment 3
Sinter is prepared according to method described in embodiment 1, unlike the first embodiment, chromium type high in mixture
The mass content of vanadium titano-magnetite is 53%, and the mass content of Brazilian mine is 4%, and the mass content of hair mine is 2.5%, the high powder of state
Mass content be 18%, in plus the mass content of powder be 2%, the mass content of gas ash is 2%, and the mass content of boric acid is
0.22%, the mass content of manganese mineral powder is 2.4%, and the mass content of steel slag is 3%；The mass content of quick lime is 4.58%,
The mass content of lime stone is 4%, and quality of fuel content is 4.3%, and the mass content of moisture is the 7.5% (quality of moisture
Content is not counted in the mass content of mixture)；
The sinter that embodiment 3 is prepared according to the method for embodiment 1 detects, and testing result is the present invention
The fusing point for the sinter that embodiment 3 is prepared is 1287 DEG C；Drum strength is 72.76%, yield rate 76.3%, and yield is
1.363t/m2×h；Solid fuel consumption is 46.67Kg/t mine；Low temperature reduction degradation index is 31.82%.Compared with comparative example 1,
Sinter fusing point prepared by the embodiment of the present invention 3 declines 58 DEG C, and sintered ore rotary drum strength improves 1.53%, and yield rate improves
2.84%, output increased 2.95%, solid fuel consumption declines 2.76Kg/t mine, and RDI of Sinter has dropped
29.72%.
Embodiment 4
Sinter is prepared according to method described in embodiment 1, unlike the first embodiment, chromium type high in mixture
The mass content of vanadium titano-magnetite is 53%, and the mass content of Brazilian mine is 3.5%, and the mass content of hair mine is 2.5%, and state is high
The mass content of powder is 19%, in plus the mass content of powder be 1.6%, the mass content of gas ash is 2%, and the quality of boric acid contains
Amount is 0.29%, and the mass content of manganese mineral powder is 2.9%, and the mass content of steel slag is 3.9%；The mass content of quick lime is
3.61%, the mass content of lime stone is 3.7%, and quality of fuel content is 4%, and the mass content of moisture is 7.55% (water
The mass content divided is not counted in the mass content of mixture)；
The sinter that embodiment 4 is prepared according to the method for embodiment 1 detects, and testing result is the present invention
The fusing point for the sinter that embodiment 4 is prepared is 1273 DEG C；Drum strength is 73.12%, yield rate 76.67%, yield
For 1.368t/m2×h；Solid fuel consumption is 46.14Kg/t mine；Low temperature reduction degradation index is 25.48%.With 1 phase of comparative example
Than sinter fusing point prepared by the embodiment of the present invention 4 declines 72 DEG C, and sintered ore rotary drum strength improves 1.89%, and yield rate improves
3.21%, output increased 3.32%, solid fuel consumption declines 3.29Kg/t mine, RDI of Sinter (RDI-3.15)
Have dropped 36.06%.
Comparative example 1
The sinter being prepared according to the method for embodiment 1, unlike the first embodiment, in mixture not boronic acid containing,
Manganese mineral powder and steel slag；The mass content of high-chromic vanadium-titanium ferroferrite is 53% in mixture, and the mass content of Brazilian mine is
5.5%, the mass content of hair mine is 2.5%, and the mass content of the high powder of state is 17%, in plus the mass content of powder be 3.5%, watt
The mass content of this ash is 2%, and the mass content of quick lime is 6%, and the mass content of lime stone is 5.5%, quality of fuel
Content is 5%, and the mass content of moisture is 7.4% (mass content of moisture is not counted in the mass content of mixture)；
The sinter that comparative example 1 is prepared according to the method for embodiment 1 detects, and testing result is the present invention
The fusing point for the sinter that comparative example 1 is prepared is 1345 DEG C；Drum strength is 71.23%, yield rate 73.46%, yield
For 1.324t/m2×h；Solid fuel consumption is 49.43Kg/t mine；Low temperature reduction degradation index is 61.54%.
Comparative example 2
The sinter being prepared according to the method for embodiment 1 is free of manganese ore unlike the first embodiment in mixture
Powder and steel slag, the mass content of boric acid are 2.46%.
The sinter that comparative example 2 is prepared according to the method for embodiment 1 detects, and testing result is the present invention
The fusing point for the sinter that comparative example 2 is prepared is 1331 DEG C；Drum strength is 71.96%, yield rate 75.1%, and yield is
1.342t/m2×h；Solid fuel consumption is 48.36Kg/t mine；Low temperature reduction degradation index is 53.78%.
Comparative example 3
The sinter being prepared according to the method for embodiment 1, unlike the first embodiment, not boronic acid containing in mixture
And steel slag, the mass content of manganese mineral powder are 2.46%.
The sinter that comparative example 3 is prepared according to the method for embodiment 1 detects, and testing result is the present invention
The fusing point for the sinter that comparative example 1 is prepared is 1338 DEG C；Drum strength is 71.82%, yield rate 74.25%, yield
For 1.334t/m2×h；Solid fuel consumption is 48.73Kg/t mine；Low temperature reduction degradation index is 56.49%.
Comparative example 4
The sinter being prepared according to the method for embodiment 1 is free of manganese ore unlike the first embodiment in mixture
Powder and boric acid, the mass content of steel slag are 2.46%.
The sinter that comparative example 4 is prepared according to the method for embodiment 1 detects, and testing result is the present invention
The fusing point for the sinter that comparative example 1 is prepared is 1335 DEG C；Drum strength is 71.74%, yield rate 74.68%, yield
For 1.332t/m2×h；Solid fuel consumption is 48.90Kg/t mine；Low temperature reduction degradation index is 57.14%.
As seen from the above embodiment, the present invention is by optimizing skill with addition of boric acid, manganese mineral powder, steel slag and sintering process parameter
Art significantly reduces the fusing point of high-chromic vanadium-titanium ferroferrite sintering feed, improves the generation of sinter liquid phase, crystallizable mineral and mine
Phase structure etc. improves the purpose of Sintering Operation Index and yield rate to reach intensified-sintered process, make sinter yield rate,
Metallurgical performance improves a lot and fuel consumption declines.
What has been described above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill of the art
For personnel, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of method for reducing high-chromic vanadium-titanium ferroferrite sinter mixture fusing point, comprising: by pelletizing, cloth after mixture plus water
Material and ignition sintering；It is characterized by:
Contain additive in the mixture；
The additive includes boric acid, manganese mineral powder and steel slag；
Mass content of the boric acid in mixture is 0.05~0.3%；
Mass content of the manganese mineral powder in mixture is 1~3%；
Mass content of the steel slag in mixture is 1~4%.
2. the method according to claim 1, wherein the mixture includes:
Additive, iron ore, flux and fuel；
The iron ore includes high-chromic vanadium-titanium ferroferrite, Brazilian mine, Mauritanian mine, domestic high-grade iron ore, the processing of middle grade
Mine and gas ash.
3. according to the method described in claim 2, it is characterized in that, quality of the high-chromic vanadium-titanium ferroferrite in mixture
Content is 48~54%；
Mass content of the domestic high-grade iron ore in mixture is 15~20%；
Mass content of the middle grade processing mine in mixture is 2.8~8.5%；
Mass content of the gas ash in mixture is 2~4%.
4. according to the method described in claim 2, it is characterized in that, the flux includes quick lime and lime stone.
5. according to the method described in claim 4, it is characterized in that, mass content of the quick lime in mixture is 3.5
~6.5%；
Mass content of the lime stone in mixture is 3.7~6.8%.
6. according to the method described in claim 2, it is characterized in that, mass content of the fuel in mixture be 4~
6%.
7. according to the method described in claim 2, it is characterized in that, the dosage of water is mixture quality in the balling process
7.4~7.6%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710537399.0A CN107326175B (en) | 2017-07-04 | 2017-07-04 | A method of reducing high-chromic vanadium-titanium ferroferrite sinter mixture fusing point |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710537399.0A CN107326175B (en) | 2017-07-04 | 2017-07-04 | A method of reducing high-chromic vanadium-titanium ferroferrite sinter mixture fusing point |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107326175A CN107326175A (en) | 2017-11-07 |
| CN107326175B true CN107326175B (en) | 2019-05-28 |
Family
ID=60197901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710537399.0A Active CN107326175B (en) | 2017-07-04 | 2017-07-04 | A method of reducing high-chromic vanadium-titanium ferroferrite sinter mixture fusing point |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107326175B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109266847B (en) * | 2018-11-19 | 2020-09-08 | 攀枝花学院 | Preparation method of low-temperature consolidated metallurgical pellets |
| CN109355494B (en) * | 2018-11-22 | 2020-08-11 | 攀钢集团攀枝花钢铁研究院有限公司 | Pellet containing chromium-containing vanadium-titanium magnetite and capable of improving chalking resistance and preparation method of pellet |
| CN111118282A (en) * | 2019-11-28 | 2020-05-08 | 攀钢集团攀枝花钢钒有限公司 | Method for improving metallurgical performance of vanadium-titanium sintered ore |
| CN113832271B (en) * | 2021-11-29 | 2022-02-22 | 天津市新天钢钢铁集团有限公司 | Sintering smelting method of titanium-containing sea placer |
| CN114480836B (en) * | 2021-12-22 | 2023-09-12 | 武钢集团昆明钢铁股份有限公司 | Low-cost sinter of high-ratio vanadium-titanium magnetite concentrate and preparation method thereof |
| US11891677B2 (en) | 2022-01-10 | 2024-02-06 | North China University Of Science And Technology | Additive for reducing the roasting temperature of fluxed magnetite pellets and a method of using it |
| CN114032387B (en) * | 2022-01-10 | 2022-04-01 | 华北理工大学 | Additive for reducing roasting temperature of fluxed magnetite pellets and use method thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101041867A (en) * | 2007-02-02 | 2007-09-26 | 攀枝花钢铁(集团)公司 | Sintering method for high-chromic vanadium-titanium ferroferrite |
| CN102443694A (en) * | 2011-12-08 | 2012-05-09 | 黑龙江建龙钢铁有限公司 | Sintering method of high-chromium and high-vanadium schreyerite |
| CN102978384A (en) * | 2012-12-24 | 2013-03-20 | 首钢总公司 | Method for using steel slags during sintering |
| CN103451418A (en) * | 2013-09-07 | 2013-12-18 | 鞍钢股份有限公司 | Production method of sintered ores |
| CN103981310A (en) * | 2014-05-22 | 2014-08-13 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for melting vanadium titano-magnetite by blast furnace |
| CN104388669A (en) * | 2014-11-05 | 2015-03-04 | 东北大学 | Method for improving drum strength of chromium-containing vanadium-titanium sinter |
| CN104630451A (en) * | 2015-02-09 | 2015-05-20 | 东北大学 | Preparation method of high-chromium vanadium-titanium sintered mixed pellet material |
| CN105177279A (en) * | 2015-08-21 | 2015-12-23 | 东北大学 | Method for improving quality of high-chromium vanadium and titanium sinter |
| CN105648208A (en) * | 2016-04-06 | 2016-06-08 | 攀钢集团攀枝花钢铁研究院有限公司 | Sintering method of high-chromium type vanadium titano-magnetite |
| CN104630449B (en) * | 2015-02-09 | 2017-01-11 | 东北大学 | Method for preparing sintered ore by using high-chromium-type vanadium-titanium mixture |
-
2017
- 2017-07-04 CN CN201710537399.0A patent/CN107326175B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101041867A (en) * | 2007-02-02 | 2007-09-26 | 攀枝花钢铁(集团)公司 | Sintering method for high-chromic vanadium-titanium ferroferrite |
| CN102443694A (en) * | 2011-12-08 | 2012-05-09 | 黑龙江建龙钢铁有限公司 | Sintering method of high-chromium and high-vanadium schreyerite |
| CN102978384A (en) * | 2012-12-24 | 2013-03-20 | 首钢总公司 | Method for using steel slags during sintering |
| CN103451418A (en) * | 2013-09-07 | 2013-12-18 | 鞍钢股份有限公司 | Production method of sintered ores |
| CN103981310A (en) * | 2014-05-22 | 2014-08-13 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for melting vanadium titano-magnetite by blast furnace |
| CN104388669A (en) * | 2014-11-05 | 2015-03-04 | 东北大学 | Method for improving drum strength of chromium-containing vanadium-titanium sinter |
| CN104630451A (en) * | 2015-02-09 | 2015-05-20 | 东北大学 | Preparation method of high-chromium vanadium-titanium sintered mixed pellet material |
| CN104630449B (en) * | 2015-02-09 | 2017-01-11 | 东北大学 | Method for preparing sintered ore by using high-chromium-type vanadium-titanium mixture |
| CN105177279A (en) * | 2015-08-21 | 2015-12-23 | 东北大学 | Method for improving quality of high-chromium vanadium and titanium sinter |
| CN105648208A (en) * | 2016-04-06 | 2016-06-08 | 攀钢集团攀枝花钢铁研究院有限公司 | Sintering method of high-chromium type vanadium titano-magnetite |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107326175A (en) | 2017-11-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107326175B (en) | A method of reducing high-chromic vanadium-titanium ferroferrite sinter mixture fusing point | |
| CN104480299B (en) | Method for preparing sintered ores by adding waste slag to chromium-containing-type vanadium-titanium magnetite concentrates | |
| CN107267749B (en) | The method that the high vanadium vanadium titanium magnet ore concentrate mix containing chromium type of high-grade prepares sinter | |
| CN101613800B (en) | Metallurgical composite pelletizing prepared through twice pelletizing method, as well as preparation method and application thereof | |
| CN104630449B (en) | Method for preparing sintered ore by using high-chromium-type vanadium-titanium mixture | |
| CN102242251B (en) | Alkaline V-Ti pellet and preparation method thereof | |
| CN101519720B (en) | Method for preparing high titania type high MgO sintering ore | |
| CN101338363B (en) | High titan type low FeO content sinter and method for preparing same | |
| CN104232822B (en) | The method of high-phosphor oolitic hematite vanadium titano-magnetite blast furnace ironmaking | |
| CN111763824B (en) | Waste catalyst recycling treatment method based on iron ore sintering process | |
| CN104232885B (en) | Method for blending ore of vanadium-titanium sintered ore | |
| CN108950189A (en) | A method of sinter containing MgO is produced using waste magnesia carbon bricks | |
| CN103290227A (en) | Preparation method of nickel-chromium cast iron with stainless steel dedusting ash as raw material | |
| CN106521148A (en) | Method for preparing high carbon ferro-chrome by fusible chrome fine ore | |
| CN102373332A (en) | Ultra-micro magnesium carbonate pellet additive, preparation method thereof, and application thereof | |
| CN104263915B (en) | A kind of preparation method of high vanadium-titanium magnitite sinter | |
| CN104278146B (en) | A kind of sintering flux preparation method for iron ore sintering | |
| CN110106348A (en) | A kind of compound additive and its application method for strengthening lateritic nickel ore sintering | |
| CN104263916B (en) | Adhesive for pellet and preparation method of pellet | |
| CN104630458B (en) | A kind of acidity preparation method containing chromium type vanadium titanium sintering deposit | |
| CN107299221B (en) | A kind of preparation method of sinter mixture, sinter and sinter | |
| CN102719677B (en) | Method for producing iron-copper alloy micropowder by treating copper smelting slag in oxidizing atmosphere kiln | |
| CN107267750B (en) | A kind of method of granulating of high-chromic vanadium-titanium ferroferrite sinter mixture | |
| CN107326174B (en) | A kind of method of large-type sinterer sintering high-chromic vanadium-titanium ferroferrite | |
| CN103834799A (en) | Method for increasing yield of sintering ore by utilizing siderite |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |