CN105969980A - Sintering method for increasing finished product rate of vanadium-titanium sinter - Google Patents
Sintering method for increasing finished product rate of vanadium-titanium sinter Download PDFInfo
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Abstract
The invention discloses a sintering method for increasing the finished product rate of vanadium-titanium sinter. The sintering method comprises the steps that fuel is pretreated, Panzhihua concentrate, 56 vanadium-titanium magnetite concentrate, Brazil ore powder, Mauritius ore powder, domestic high-grade ore powder, medium-grade processing ore powder, gas ash, limestone, quick lime and the pretreated fuel are proportioned by adding water, quick lime is added at twice, the quick lime added at the second time accounts for 25%-75% of the total mass of the quick lime, the water content and the fuel content of the mixed materials are controlled, the mixed materials are palletized, distributed and then sintered through ignition, and the material layer height is increased during ignition sintering; after sintering is completed, sinter is crushed, and a CaCl2 solution is sprayed. According to the sintering method, by improving the size composition of the mixed materials, optimizing the proportioning structure and improving the gas permeability and the thermal storage effect of the material layer, the quality of the sinter is improved, and the finished product rate of the sinter is increased.
Description
Technical field
Embodiments of the present invention relate to technical field of ferrous metallurgy, it is adaptable to high titanium low silicon type sefstromite concentrate
Sintering, more specifically, embodiments of the present invention relate to a kind of sintering side improving vanadium titanium sintering deposit yield rate
Method.
Background technology
The primary raw material that Pan Gang group company sintering uses is high-Ti type V-Ti magnetite concentrate, and this ore deposit has TiO2
Content high ((12%-13%)), Al2O3High (more than 4%), SiO2The spy of content low (about 3.5%-4%)
Point, sintering character is poor, and Silicate Binding phase content is few, and the perovskite that in sintering process, easy generative nature is crisp
(CaO·TiO2), cause that sinter strength is poor, yield rate is low, low temperature reduction degradation index (RDI-3.15) high,
The dust and the blast furnace gas ash quantity that produce in sintering process are big.In order to intensified-sintered, Pan Gang group company uses
With addition of the common fine ore (import resources, domestic high-grade breeze, middle grade breeze) of part, to improving sintering deposit
Yield and quality serves important function.But in recent years, in order to reduce ironmaking production cost, schreyerite proportioning is gradually
Improving, common fine ore proportioning reduces, and owing to v-ti magnetite concentrate sintering character is poor, causes compound granularity group
Become to be deteriorated, sintering character deteriorates, and schreyerite proportioning is the highest, and the impact on sinter strength and yield rate is the tightest
Weight.Meanwhile, in order to optimize Bf Burden, reducing ironmaking cost, blast furnace reduces pellet ratio.
Along with pellet ratio declines, sinter basicity reduces, SiO2, CaO content decline, cause sintering deposit strong
Degree and the bigger decline of yield rate, pulverization rate increases, and energy consumption and production cost rise, and this is to climb steel sintering at present
A major issue present in production.Therefore, the burning improving vanadium titanium sintering deposit yield rate of innovation
Knot reinforcement technique, to Appropriate application schreyerite resource, reduces production cost and climbs the survival and development of steel
There is important effect.Minority iron and steel enterprise adopts in high iron low silicon common concentrate SINTERING PRODUCTION the most both at home and abroad
By partial reinforcement technology, but not to raw material mix and relevant being optimized with addition of technological parameter, therefore by force
Change effect not satisfactory.Up to now, the patent improving high-Ti type V-Ti sintering deposit yield rate relevant there is not yet
Report.
Summary of the invention
Instant invention overcomes the deficiencies in the prior art, it is provided that a kind of sintering side improving vanadium titanium sintering deposit yield rate
Method, can improve high-Ti type V-Ti sintering deposit yield rate with expectation.
For solving above-mentioned technical problem, one embodiment of the present invention by the following technical solutions:
A kind of sintering method improving vanadium titanium sintering deposit yield rate, including the fuel pretreatment carried out successively, joins
Material, the mixing that adds water, pelletizing, igniting sintering, sprinkling CaCl2Solution, blast furnace process, specifically include following step
Rapid:
(1) fuel is carried out pretreatment, make the granule more than 3mm of granularity in process post fuel account for 12%～
20%, the granularity granule less than 0.25mm accounts for 10%～15%；
(2) by mass percentage, take 48%～54% climb concentrate, 0～12%56 schreyerite, 0～3%
Brazil ore deposit, 0～2.5% mao of ore deposit, 11%～16% state's height powder, add powder, 2%～4% gas in 2.8%～8.5%
Ash, 3.7%～6.8% limestone, 5.5%～6.5% quick lime；By above-mentioned raw materials and described pretreated combustion
Material adds water dispensing together, quick lime at twice with addition of and second time with addition of ratio account for quick lime gross mass
25%～75%, the water content of gained compound is 7.4%～7.5%, the fuel content in compound be 4.8%～
5.0%；
(3) by igniting sintering after compound pelletizing, cloth, during igniting sintering, bed depth is 710～720mm；
(4) after having sintered, being crushed by sintering deposit, spray concentration is the CaCl of 2.0%～2.5%2Solution.
Iron-bearing material (climb concentrate, 56 schreyerite, Brazil ore deposit, Mao Kuang, state's height powder, in add powder, gas ash)
Can ensure that the grade (TFe content) of sintering deposit is higher within the above range, cost of material is relatively low, and can be full
The needs of foot blast furnace process.If low iron charge (in add powder, gas ash) is higher than its each higher limit, high ferro
Material (56 schreyerite, Brazil ore deposit, Mao Kuang, state's height powder) is less than its respective lower limit, the then product of sintering deposit
Position is low, it is impossible to meet the requirement of blast furnace process；If (in add powder, gas ash) is low on the contrary, low iron charge
It is higher than its each higher limit in its respective lower limit, high iron charge (56 schreyerite, Brazil ore deposit, state's height powder),
Although sintering deposit is of high grade, but owing to high iron charge price is high, production cost is necessarily caused to increase.Flux (stone
Lime stone, quick lime) ratio range value is the basicity (CaO/SiO according to sintering deposit2) determine, its proportioning
Too high or too low sinter basicity will be caused defective, it is impossible to meet the requirement of blast furnace process.
It should be noted that 56 schreyerite: i.e. ferrum divides the v-ti magnetite concentrate of about 56%, is called for short 56 vanadium titaniums
Ore deposit；Brazil ore deposit: i.e. Brazil produces breeze, is called for short Brazil ore deposit；Hair ore deposit: i.e. Mauritius's breeze, is called for short hair ore deposit,
Being all import rich ore powder with Brazilian ore deposit, ferrum divides higher (TFe is 60%～about 62%).Gas ash: the highest
Stove gravitational dust collection ash, owing in cleaning shaft, air-flow is mainly blast furnace gas, and blast furnace gas is containing CO etc.
Poisonous explosion hazard gases, therefore it is called for short again the ash that gas ash, i.e. methane gas are taken out of, sinter the mesh with addition of gas ash
Predominantly refuse reclamation.State's height powder: the most domestic product high-grade breeze, is called for short state's height powder, and ferrum divides higher
(TFe is 58～about 60%).In add powder: grade processing breeze in i.e., abbreviation adds powder, ferrum divides medium
(TFe is 35～about 50%).Preferably, step (2) described raw material is to be climbed essence by 51.0%～52.0%
Ore deposit, 11.0%～12.0%56 schreyerite, 2.0%～2.5% Brazil ore deposit, 1.5%～2.0% mao of ore deposit, 11.0%～
16.0% state's height powder, add in 2.8%～8.5% powder, 2.0%～3.0% gas ash, 4.5%～6.5% limestone,
5.5%～6.5% quick lime composition.
Control suitable fuel granularity beneficially fuel to be uniformly distributed in compound, make burning velocity and heat transfer
Speed tends to synchronizing.Preferably, after described fuel pretreatment, granularity accounts for 13% more than the granule of 3mm, 15%,
17% or 19%, the granularity granule less than 0.25mm accounts for 11%, 12%, 13% or 14%.
Use the mode of divided flux addition, owing to CaO and fuel mix, fuel is had catalytic action, can
Accelerate burning velocity, it addition, bead surface basicity is than internal relative improve, local high alkalinity can be formed, add
Speed Ca2+The more calcium ferrite of the diffusion of ion, beneficially Surface Creation, improves sinter strength and yield rate.
Preferably, described quick lime second time with addition of ratio account for the 30% of quick lime gross mass, 40%, 50% or
70%.
Due to addition of the granularity of 56 sefstromite concentrates relatively thin and capillary water content high, properly increase sintered compound
Material moisture can improve the granularmetric composition of compound, improves the breathability of the bed of material, thus improves sintering deposit
Yield and quality.Preferably, the water content of described compound is 7.42%, 7.45%, 7.5% or 7.55%.If it is mixed
Closing material moisture and be less than 7.4%, the balling property of compound can be caused to decline, the breathability of the bed of material is deteriorated,
Sintering deposit quality and decrease in yield；If mixture moisture content is higher than 7.6%, sintering process can add
Thicker than wet layer, causing materialbeds comminution to increase, Fuel Consumption increases simultaneously, is unfavorable for sintering deposit quality
And yield rate.
If mixture moisture content is less than 7.4%, the balling property of compound can be caused to decline, breathing freely of the bed of material
Property be deteriorated, sintering deposit quality and decrease in yield；If mixture moisture content is higher than 7.6%, sintered
Cheng Zhonghui thickeies excessive moistening layer, causes materialbeds comminution to increase, and Fuel Consumption increases simultaneously, is unfavorable for sintering deposit
Quality and yield rate.Preferably, described bed depth is 715mm or 720mm；Add water mixed
Mixed carbon comtent in compound is reduced to 4.8～5.0% by 5.2%, it is preferable that the fuel content in described compound
It is 4.85%, 4.90%, 4.95% or 4.98%.Mixed carbon comtent in compound is too low, can not meet sintering process
The needs of middle heat, cause amount of liquid phase to generate deficiency, and Sinter is poor, intensity is low, sinters mineral products matter
Amount and yield rate are low；On the contrary, in the too high then sintering process of mixed carbon comtent in compound, combustion zone is wide, the bed of material
Resistance increases, and sintering velocity declines, simultaneously sintering deposit superfusion, and intensity declines, and Fuel Consumption increases, with
Sample is unfavorable for sintering deposit quality and yield rate.
CaCl is shone in sintering deposit spray2Solution can make the hole of agglomerate surface by CaCl2Cover, formed compound
Body film, thus suppress sintering deposit hexahedral Fe when 450～550 DEG C2O3It is reduced into cubical Fe3O4
Rate of transformation, weaken fragmentation atomizing produced by sintering deposit, reduce low temperature reduction degradation index
(RDI-3.15).Preferably, described CaCl2The mass concentration of solution is 1.6%, 2.0%, 2.4% or 2.8%.
Further technical scheme is: described sintering parameter is igniting negative pressure 5.5～6.5kPa, sinters negative pressure
12～13kPa, firing temperature 1000～1050 DEG C, the duration of ignition 2.0～2.5min.
Use above-mentioned raising vanadium titanium sintering deposit yield rate technical method can improve sintering process, improve SiO2Contain
Amount, makes up basicity and declines the adverse effect to sintering, generate more high quality silicon hydrochlorate and calcium ferrite Binder Phase,
Improve mineral composition and the structure of sintering deposit, thus reach to improve sintering deposit quality and the purpose of yield rate.
Below technical scheme is further detailed.
Improve sinter bed, bed of material high temperature hold time can be extended, make crystallizable mineral more abundant, be conducive to
Increase sintering liquid content, improve sintering deposit mineral composition and structure, improve sinter strength and yield rate,
Simultaneously as bed of material auto accumulation heat effect strengthens, it is possible to reduce mixed carbon comtent；56 sefstromite concentrate TiO2Content
Relatively low, sintering deposit TiO can be reduced with addition of part 56 sefstromite concentrate2Content, improves it and becomes ore deposit performance.By
Relatively thin in 56 sefstromite concentrate granularities, capillary water content is high, properly increases sintered mixture moisture, Ke Yigai
Kind compound granularmetric composition, improves the breathability of the bed of material, thus improves Sintering Operation Index；In add powder SiO2
Content is high, and adding powder proportioning in raising can increase SiO in sintering deposit2Content, improves the mineral composition of sintering deposit
And structure, improve sinter strength and yield rate；Control suitable fuel granularity, beneficially fuel in mixing
Material is uniformly distributed, makes burning velocity tend to Tong Bu with heat transfer rate；During divided flux addition, CaO and fuel are blended in
Together, fuel there is is catalytic action, burning velocity can be accelerated, it addition, bead surface basicity is more relative than internal
Improve, local high alkalinity can be formed, accelerate Ca2+The more calcium ferrite of the diffusion of ion, beneficially Surface Creation,
Improve sinter strength and yield rate；Sintering deposit spray is used to shine CaCl2The method of solution, can make its surface with
Hole is CaCl2It is covered with, is formed complex film, suppressed sintering deposit hexahedral Fe when 450-550 DEG C2O3
It is reduced into cube Fe3O4Rate of transformation, weaken fragmentation atomizing produced by sintering deposit, reduce low temperature
Reduction and pulverization ratio (RDI-3.15).Therefore, the multiple strengthening skill that above-mentioned high-titanium type vanadium-titanium magnetite sinters is used
Art method, can improve sintering process, improves SiO2Content, makes up basicity and declines the adverse effect to sintering,
Generate more high quality silicon hydrochlorate and calcium ferrite Binder Phase, improve mineral composition and the structure of sintering deposit, thus
Reach to improve Sintering Operation Index and the purpose of yield rate.
Compared with prior art, the method have the advantages that
(1) after using the technology of the present invention, compound granularmetric composition can be improved, improve the breathability of the bed of material, from
And improve Sintering Operation Index and yield rate.
(2) after using the technology of the present invention, the granularmetric composition of fuel can be improved so that it is divide in sinter mixture
Cloth evenly, improves fuel economy, intensified-sintered process, thus improves Sintering Operation Index and finished product
Rate.
(3) use after the technology of the present invention, can feed proportioning optimization structure, improve sintering process, improve SiO2Content,
Generate more high quality silicon hydrochlorate and calcium ferrite Binder Phase, thus improve Sintering Operation Index and yield rate.
(4) after using the technology of the present invention, sinter bed auto accumulation heat effect strengthens, and high temperature hold time extends,
Being conducive to improving the mineral composition of sintering deposit and structure, make Sintering Operation Index and yield rate improve, fuel disappears
Consumption declines.
(5) after using the technology of the present invention, CaO distribution in compound is the most reasonable, is conducive to generating more
Many calcium ferrite high-quality Binder Phases, thus improve intensity and the yield rate of sintering deposit, reduce solid fuel consumption.
(6), after using the technology of the present invention, RDI of Sinter (RDI can be improved-3.15), favorably
In the technical-economic index improving blast furnace process.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with embodiment,
The present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to
Explain the present invention, be not intended to limit the present invention.
In each embodiment, the ratio of raw material is measured by mass percentage.
Embodiment 1:
Climb concentrate proportioning 51%, 56 schreyerite 11.7%, Brazil ore deposit 2%, hair ore deposit 1.5%, state's height powder 16%,
In add powder 2.8%, gas ash 2%, limestone 6.5% and quick lime 6.5% climb steel raw materials for sintering under the conditions of,
Be 19% more than 3mm grade after fuel pretreatment, be 14% less than 0.25mm, quick lime for the first time with addition of
Ratio is 70%, and second time is 30% with addition of ratio, and the moisture in mixed compound that adds water is 7.42%,
Fuel in compound is 4.98%, and by igniting sintering after compound pelletizing, cloth, bed depth is 715mm,
Sintering parameter is igniting negative pressure 6.5kPa, sinters negative pressure 12kPa, firing temperature 1025 DEG C, the duration of ignition
2.5min, after having sintered, spraying mass concentration to sintering deposit is the CaCl of 1.6%2Solution.Result shows,
Compared with base period (the most not using the experimental period of this technology), sintered ore rotary drum strength improves 0.87%, finished product
Rate improves 1.85%, and output increased 2.08%, solid fuel consumption declines 1.64Kg/t ore deposit, and sintering deposit low temperature is also
Former pulverization rate (RDI-3.15) it is reduced to 17.42% from 56.28%, have dropped 69.05%.
Embodiment 2:
Climbing concentrate proportioning 52%, 56 schreyerite 11.5%, Brazil ore deposit 2.5%, hair ore deposit 2.0%, state's height powder
14.7%, add powder 4.6%, gas ash 2.5%, limestone 4.5% and quick lime 5.7% in climbs steel raw materials for sintering
Under the conditions of, it is 17% more than 3mm grade after fuel pretreatment, is 14% less than 0.25mm, quick lime the
Being once 60% with addition of ratio, second time is 40% with addition of ratio, and add water the moisture in mixed compound
Being 7.45%, the fuel content in compound is 4.95%, by igniting sintering after compound pelletizing, cloth, material
Layer height is 720mm, and sintering parameter is igniting negative pressure 6.5kPa, sinters negative pressure 12kPa, firing temperature
1025 DEG C, the duration of ignition, 2.5min, after having sintered, was the CaCl of 2.0% to sintering deposit sprinkling mass concentration2
Solution.Result shows, compared with base period (the most not using the experimental period of this technology), sintering deposit rotary drum is strong
Degree raising 1.12%, yield rate improves 2.26%, and output increased 2.38%, solid fuel consumption declines 2.19Kg/t
Ore deposit, RDI of Sinter (RDI-3.15) it is reduced to 14.36% from 56.28%, have dropped 74.48%.
Embodiment 3:
Climb concentrate proportioning 51.5%, 56 schreyerite 11.3%, Brazil ore deposit 2%, hair ore deposit 2%, state's height powder 13.0%,
In add powder 6.7%, gas ash 3%, limestone 5.0% and quick lime 5.5% climb steel raw materials for sintering under the conditions of,
Be 15% more than 3mm grade after fuel pretreatment, be 12% less than 0.25mm, quick lime for the first time with addition of
Ratio is 50%, and second time is 50% with addition of ratio, and the moisture in mixed compound that adds water is 7.55%,
Fuel content in compound is 4.85%, and by igniting sintering after compound pelletizing, cloth, bed depth is
715mm, sintering parameter is igniting negative pressure 6.5kPa, sinters negative pressure 12kPa, firing temperature 1025 DEG C, point
Fire time 2.5min, after having sintered, spraying mass concentration to sintering deposit is the CaCl of 2.4%2Solution.Knot
Fruit shows, compared with base period (the most not using the experimental period of this technology), sintered ore rotary drum strength improves 1.53%,
Yield rate improves 2.84%, and output increased 2.95%, solid fuel consumption declines 2.76Kg/t ore deposit, and sintering deposit is low
Temperature reduction and pulverization ratio (RDI-3.15) it is reduced to 11.32% from 56.28%, have dropped 79.89%.
Embodiment 4:
Climbing concentrate proportioning 51.9%, 56 schreyerite 11.0%, Brazil ore deposit 2.3%, hair ore deposit 1.8%, state's height powder
11.0%, add powder 8.5%, gas ash 2.3%, limestone 4.7% and quick lime 6.5% in climbs steel raw materials for sintering
Under the conditions of, it is 12% more than 3mm grade after fuel pretreatment, is 10% less than 0.25mm, quick lime the
Being once 30% with addition of ratio, second time is 70% with addition of ratio, and add water the moisture in mixed compound
Being 7.55%, the fuel content in compound is 4.80%, by igniting sintering after compound pelletizing, cloth, material
Layer height is 720mm, and sintering parameter is igniting negative pressure 5.5kPa, sinters negative pressure 13kPa, firing temperature
1050 DEG C, the duration of ignition, 2.0min, after having sintered, was the CaCl of 2.8% to sintering deposit sprinkling mass concentration2
Solution.Result shows, compared with base period (the most not using the experimental period of this technology), sintering deposit rotary drum is strong
Degree raising 1.89%, yield rate improves 3.21%, and output increased 3.32%, solid fuel consumption declines 3.29Kg/t
Ore deposit, RDI of Sinter (RDI-3.15) it is reduced to 9.84% from 56.28%, have dropped 82.51%.
In sum, the present invention passes through feed proportioning optimization structure and sintering process parameter, and integrated application fuel is located in advance
Reason, improve sinter mixture moisture, suitably reduce sinter mixture mixed carbon comtent, improve bed depth,
Divided flux addition, to sintering deposit spray CaCl2Solution etc. process step, improve significantly compound granularmetric composition,
Fuel economy, flux mineralising, sintering thermal system, crystallizable mineral etc., thus reach intensified-sintered process,
Improve Sintering Operation Index and the purpose of yield rate, make sintering deposit yield rate, low-temperature reduction disintegration can have relatively
Big raising and fuel consumption decline.
Although reference be made herein to invention has been described for the explanatory embodiment of the present invention, however, it should reason
Solving, those skilled in the art can be designed that a lot of other amendments and embodiment, these amendments and enforcement
Mode will fall within spirit disclosed in the present application and spirit.More specifically, disclosed in the present application
In the range of, the building block of theme composite configuration and/or layout can be carried out multiple modification and improvement.Except
The modification that building block and/or layout are carried out and improve outside, to those skilled in the art, other
Purposes also will be apparent from.
Claims (9)
1. the sintering method improving vanadium titanium sintering deposit yield rate, it is characterised in that comprise the following steps:
(1) fuel is carried out pretreatment, make the granule more than 3mm of granularity in process post fuel account for 12%～
20%, the granularity granule less than 0.25mm accounts for 10%～15%；
(2) by mass percentage, take 48%～54% climb concentrate, 0～12%56 schreyerite, 0～3%
Brazil ore deposit, 0～2.5% mao of ore deposit, 11%～16% state's height powder, add powder, 2%～4% in 2.8%～8.5%
Gas ash, 3.7%～6.8% limestone, 5.5%～6.5% quick lime；By above-mentioned raw materials and described pre-place
Fuel after reason adds water dispensing together, quick lime at twice with addition of and second time with addition of ratio account for calculogenesis
The 25%～75% of ash gross mass, the water content of gained compound is 7.4%～7.5%, in compound
Fuel content is 4.8%～5.0%；
(3) by igniting sintering after compound pelletizing, cloth, during igniting sintering, bed depth is 710～720mm；
(4) after having sintered, being crushed by sintering deposit, spray concentration is the CaCl of 2.0%～2.5%2Solution.
The sintering method of raising vanadium titanium sintering deposit yield rate the most according to claim 1, it is characterised in that step
(2) described raw material be by 51.0%～52.0% climb concentrate, 11.0%～12.0%56 schreyerite, 2.0%～
2.5% Brazil ore deposit, 1.5%～2.0% mao of ore deposit, 11.0%～16.0% state's height powder, add in 2.8%～8.5% powder,
2.0%～3.0% gas ash, 4.5%～6.5% limestone, 5.5%～6.5% quick lime composition.
The sintering method of raising vanadium titanium sintering deposit yield rate the most according to claim 1, it is characterised in that described
After fuel pretreatment, the granularity granule more than 3mm accounts for 13%, 15%, 17% or 19%, and granularity is little
Granule in 0.25mm accounts for 11%, 12%, 13% or 14%.
The sintering method of raising vanadium titanium sintering deposit yield rate the most according to claim 1, it is characterised in that described
Quick lime second time with addition of ratio account for the 30% of quick lime gross mass, 40%, 50% or 70%.
The sintering method of raising vanadium titanium sintering deposit yield rate the most according to claim 1, it is characterised in that described
The water content of compound is 7.42%, 7.45%, 7.5% or 7.55%.
The sintering method of raising vanadium titanium sintering deposit yield rate the most according to claim 1, it is characterised in that described
Fuel content in compound is 4.85%, 4.90%, 4.95% or 4.98%.
The sintering method of raising vanadium titanium sintering deposit yield rate the most according to claim 1, it is characterised in that described
Bed depth is 715mm or 720mm.
The sintering method of raising vanadium titanium sintering deposit yield rate the most according to claim 1, it is characterised in that described
CaCl2The mass concentration of solution is 1.6%, 2.0%, 2.4% or 2.8%.
The sintering method of raising vanadium titanium sintering deposit yield rate the most according to claim 1, it is characterised in that described
Sintering parameter for igniting negative pressure 5.5～6.5kPa, sinter negative pressure 12～13kPa, firing temperature 1000～
1050 DEG C, the duration of ignition 2.0～2.5min.
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| CN107881330A (en) * | 2017-11-19 | 2018-04-06 | 东北大学 | A kind of method that high-chromic vanadium-titanium ferroferrite prepares sintering deposit with addition of ilmenite |
| CN110462070A (en) * | 2017-03-31 | 2019-11-15 | 杰富意钢铁株式会社 | It is granulated the manufacturing method of raw materials for sintering and the manufacturing method of sinter |
| CN110527826A (en) * | 2019-08-30 | 2019-12-03 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of sintering method that sintering process inhibits perovskite to generate |
| CN111235383A (en) * | 2019-12-30 | 2020-06-05 | 武钢资源集团有限公司 | Method for producing sintered ore by adding and using low magnesium resource |
| CN115491488A (en) * | 2022-09-21 | 2022-12-20 | 宝武集团鄂城钢铁有限公司 | Iron-containing material for sintering with low usage amount of Brazilian mixed powder, sintering composition, sintered ore and preparation method thereof |
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| CN111235383B (en) * | 2019-12-30 | 2022-01-14 | 武钢资源集团乌龙泉矿业有限公司 | Method for producing sintered ore by adding and using low magnesium resource |
| CN115491488A (en) * | 2022-09-21 | 2022-12-20 | 宝武集团鄂城钢铁有限公司 | Iron-containing material for sintering with low usage amount of Brazilian mixed powder, sintering composition, sintered ore and preparation method thereof |
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