CN104630453B - It is a kind of choose the titanium compound of vanadium containing chromium type in addition of Iron Ore Powder method - Google Patents
It is a kind of choose the titanium compound of vanadium containing chromium type in addition of Iron Ore Powder method Download PDFInfo
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- CN104630453B CN104630453B CN201510063886.9A CN201510063886A CN104630453B CN 104630453 B CN104630453 B CN 104630453B CN 201510063886 A CN201510063886 A CN 201510063886A CN 104630453 B CN104630453 B CN 104630453B
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- iron ore
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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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/16—Sintering; Agglomerating
Abstract
It is a kind of choose the titanium compound of vanadium containing chromium type in addition of Iron Ore Powder method, belong to metallurgical technology field, carry out according to the following steps：（1）Will prepare with ore deposit various Iron Ore Powders and quick lime be milled down to below 0.074mm respectively, respectively will be levigate after Iron Ore Powder mix with calcium lime powder；（2）Mixed powder is made into sample respectively, pre-arcing characterisiticses measure is then carried out respectively；（3）That shrinks the effective liquid phase of measure initially forms temperaturet sThe temperature for terminating is formed with effective liquid phaset fAnd temperature ranget；（4）Determine specimen height difference when drastically shrinking twiceG, and contraction time is poorτ G=τ 2‑τ 1；The formation speed of safe amount of liquid phasev；（5）Obtain melting regionτ m；（6）The optimum Iron Ore Powder of selective goal is used as preferred Iron Ore Powder.The species of best-fit in different Iron Ore Powders with ore deposit quickly can effectively be analyzed using the method for the present invention, by optimum Iron Ore Powder is sintered ore deposit testing inspection with ore deposit in the titanium compound of vanadium containing chromium type, the sintering deposit of better performance is obtained in that.
Description
Technical field
The invention belongs to metallurgical technology field, more particularly to it is a kind of choose in the titanium compound of vanadium containing chromium type with addition of Iron Ore Powder
Method.
Background technology
Contain higher vanadium, titanium, chromium component containing chromic vanadium-titanium ferroferrite, comprehensive utilization value is high；Which can be entered at present
The flow process of row heavy industrialization application is blast furnace-bof process.In China, sintering deposit accounts for the ratio of blast furnace feeding furnace charge and exists
70% or so, blast furnace process is no exception containing chromic vanadium-titanium ferroferrite, therefore, containing chromium type vanadium titanium of the production with high yield and quality burns
Knot ore deposit just has very important effect.Correlational study table, full vanadium titanium sintering deposit due to due to its own, yield and quality compared with
It is low, do not meet the interests demand of actual production.When actual production prepares vanadium titanium sinter mixture, it is both needed to addition of a certain amount of
Common Iron Ore Powder, preparing for the titanium sinter mixture of vanadium containing chromium type are no exception.
Sintering deposit mainly forms a certain amount of liquid phase at a certain temperature by compound, by suitable liquid phase
Flow what non-melt bonding was consolidated and formed；Previous correlational study points out, restricts the titanium Sintering Operation Index of vanadium containing chromium type
One major reason is the deficiency of liquid phase growing amount；Therefore, how to choose the Pu Kuang of the preparation titanium compound of vanadium containing chromium type and its match somebody with somebody
Dosage so that the titanium compound of vanadium containing chromium type there is suitable liquid phase generative capacity so as to improve its sintering deposit yield and quality just
Become a problem.
The content of the invention
It is an object of the invention to provide it is a kind of choose the titanium compound of vanadium containing chromium type in addition of Iron Ore Powder method, by select
Take Pu Kuang and the titanium of vanadium containing chromium type compound is prepared for producing sintering deposit, while follow-up vanadium extraction requirement is met, it is ensured that containing chromium type
The optimization of vanadium titanium Sintering Operation Index.
The present invention choose in the titanium compound of vanadium containing chromium type with addition of the method for Iron Ore Powder carry out according to the following steps：
1st, will prepare with ore deposit various Iron Ore Powders and quick lime be milled down to below 0.074mm respectively, respectively will be levigate after
Iron Ore Powder is mixed with calcium lime powder, and mixed proportion obtains mixed powder by the total alkalinity of whole materials respectively 1.90 ~ 2.70；
The 2nd, mixed powder is pressed into the cylindrical specimens of Φ 3mm × 3mm respectively, pre-arcing characterisiticses survey is then carried out respectively
It is fixed；Protective gas protection sample is made with Ar in the temperature-rise period of measure；Compound is defined according to standard GB/T/T219-1996
Characteristic melting temperature；
3rd, temperature when sample shrinks 30% is that effective liquid phase initially forms temperaturet s, temperature when shrinking 60% is have
Effect liquid phase forms the temperature for terminatingt f, temperature ranget= t f- t sAs characteristic melting temperature；
4th, with specimen height difference when drastically shrinking for the second time when sample drastically shrinks for the first timeG= -(G 2-G 1) to have
Imitate safe amount of liquid phase；Time when drastically shrinking for the first time isτ 1, for the second time drastically shrink when time beτ 2, for the first time with
The secondary time drastically between contraction is that contraction time is poorτ G=τ 2-τ 1；The formation speed of safe amount of liquid phasev=G/τ G；
5th, melting regionτ mIt is compound under above-mentioned temperature increasing schedule, from shrinking 30% to shrinking for 60% time experienced；
6th, selectt s, temperature ranget、Melting regionτ m, contraction time it is poorτ GWith the formation speed of safe amount of liquid phasevFive
In index, the Iron Ore Powder of more than three index optimums is used as preferred Iron Ore Powder.
In said method, tsAt 1200 ~ 1300 DEG C, tsMinimum index is optimum；, at 0 ~ 50 DEG C, t is most for temperature range t
Big Iron Ore Powder index is optimum, melting regionτ mIn the range of 0 ~ 10min, most long index is optimum, and contraction time is poorτ G0 ~
In the range of 10min,τ GMaximum index is optimum, and the formation speed v of safe amount of liquid phase is in 0.100 ~ .0.500mmmin-1Scope
Interior, v minimum index is optimum.
In said method, the temperature increasing schedule that pre-arcing characterisiticses are determined is pressed：Control during room temperature ~ 1000 DEG C programming rate for 10 DEG C/
min；Programming rate is controlled when 1000 ~ 1200 DEG C for 8 DEG C/min；Control when 1200 ~ 1400 DEG C programming rate for 5 DEG C/
min。
Above-mentioned Iron Ore Powder selects ground hematite, magnetite powder and/or brown ocher.
The present invention principle be：t sIn reflection sintering process, compound starts to generate the temperature of effective liquid phase,t fReflection
The complexity that the effective liquid phase of compound is generated in sintering process,tIn reflection sintering process, the formation range of effective amount of liquid phase, burns
During knot, compound have relatively low characteristic melting temperature (t sWitht f) and wider melting regionτ mContribute to liquid phase
Control is formed, it is lessvWill be helpful to liquid phase fully to flow bonding, improve the quality of sintering deposit.
Species of the best-fit with ore deposit in different Iron Ore Powders quickly can effectively be analyzed using the method for the present invention, by inciting somebody to action
Optimum Iron Ore Powder is sintered ore deposit testing inspection with ore deposit in the titanium compound of vanadium containing chromium type, is obtained in that the sintering of better performance
Ore deposit.
Description of the drawings
Fig. 1 is to carry out the apparatus structure schematic diagram of pre-arcing characterisiticses measure in the embodiment of the present invention；In figure, 1, alundum tube, 2,
Sample, 3, molybdenum sheet, 4, corundum pad, 5, calandria.
Specific embodiment
The Iron Ore Powder adopted in the embodiment of the present invention selects ground hematite, magnetite powder and/or brown ocher.
Embodiment 1
To prepare for the A Iron Ore Powders of ore deposit, B Iron Ore Powders and C Iron Ore Powders and quick lime be milled down to 0.074mm respectively with
Under, respectively will be levigate after Iron Ore Powder mix with calcium lime powder, mixed proportion by the total alkalinity of whole materials 1.90 ~ 2.70,
A mixed powders, B mixed powders and C mixed powders are obtained respectively；
Mixed powder is pressed into the cylindrical specimens of Φ 3mm × 3mm respectively, pre-arcing characterisiticses measure is then carried out respectively；
Protective gas protection sample is made with Ar in the temperature-rise period of measure；Compound is defined according to standard GB/T/T219-1996
Characteristic melting temperature；
Temperature when shrinking 30% is that effective liquid phase initially forms temperaturet s, temperature when shrinking 60% is effective liquid phase
Form the temperature for terminatingt f, temperature ranget= t f- t sAs characteristic melting temperature；
With specimen height difference when drastically shrinking for the second time when sample drastically shrinks for the first timeG= -(G 2-G 1) for effective
Safe amount of liquid phase；Time when drastically shrinking for the first time isτ 1, for the second time drastically shrink when time beτ 2, for the first time with second
The secondary time drastically between contraction is that contraction time is poorτ G=τ 2-τ 1；The formation speed of safe amount of liquid phasev=G/τ G；
Melting regionτ mIt is compound under above-mentioned temperature increasing schedule, from shrinking 30% to shrinking for 60% time experienced；
Selectt s, temperature ranget、Melting regionτ m, contraction time it is poorτ GWith the formation speed of safe amount of liquid phasevFive fingers
In mark, the Iron Ore Powder of more than three index optimums is used as preferred Iron Ore Powder；tsAt 1200 ~ 1300 DEG C, tsMinimum index is optimum；
, at 0 ~ 50 DEG C, t maximum Iron Ore Powder index is optimum, melting region for temperature range tτ mIn the range of 0 ~ 10min, most long finger
Mark is optimum, and contraction time is poorτ GIn the range of 0 ~ 10min,τ GMaximum index is optimum, and the formation speed v of safe amount of liquid phase exists
0.100~.0.500mm·min-1In the range of, v minimum index is optimum；
The temperature increasing schedule that pre-arcing characterisiticses are determined is pressed：Programming rate is controlled during room temperature ~ 1000 DEG C for 10 DEG C/min；1000~
Programming rate is controlled when 1200 DEG C for 8 DEG C/min；Programming rate is controlled when 1200 ~ 1400 DEG C for 5 DEG C/min；
Test measures the performance indications of A mixed powders：t s=1240 DEG C,t f=1285 DEG C,t=45 DEG C,τ m=9 min,G=
0.9 min,τ G =7.2 min,V=0.125 mm·min-1；
The performance indications of B mixed powders are：t s=1260 DEG C,t f=1290 DEG C,t=30 DEG C,τ m=8min,G=0.7 min,τ G =
5.0min,V=0.140 mm·min-1；
The performance indications of C mixed powders are：t s=1250 DEG C,t f=1295 DEG C,t=45 DEG C,τ m=5 min,G=0.8 min,τ G =2.5 min,V=0.320mm·min-1；
Judged by These parameters, A mixed powders are Iron Ore Powder of the best-fit with ore deposit；
By A Iron Ore Powders, sefstromite concentrate containing chromium type, quick lime, limestone, giobertite and coke powder mix homogeneously, add water
Ball material is made with drum pelletizer, sintering makes sintering deposit in sintering machine, and the tumbler index of sintering deposit is 70%, reduction degradation
Index is 65%, and reduction sex index is 70%.
Embodiment 2
Method with embodiment 1, difference is：
（1）Mixed proportion is by the total alkalinity of whole materials 1.90 ~ 2.70；
（2）Test measures the performance indications of A mixed powders：t s=1200 DEG C,t f=1240 DEG C,t=40 DEG C,τ m=6min,G=
1.2 min,τ G =5.0 min,V=0.240 mm·min-1；
The performance indications of B mixed powders are：t s=1215 DEG C,t f=1245 DEG C,t=30 DEG C,τ m=5min,G=0.8 min,τ G =
4.0min,V=0.200 mm·min-1；
The performance indications of C mixed powders are：t s=1210 DEG C,t f=1230 DEG C,t=20 DEG C,τ m=4min,G=1.0 min,τ G =
2 min,V=0.50mm·min-1；
Judged by These parameters, A mixed powders are Iron Ore Powder of the best-fit with ore deposit；
By A Iron Ore Powders, sefstromite concentrate containing chromium type, quick lime, limestone, giobertite and coke powder mix homogeneously, add water
Ball material is made with drum pelletizer, sintering makes sintering deposit in sintering machine, and the tumbler index of sintering deposit is 65%, reduction degradation
Index is 60%, and reduction sex index is 65%.
Claims (1)
1. it is a kind of choose the titanium compound of vanadium containing chromium type in addition of Iron Ore Powder method, it is characterised in that carry out according to the following steps：
（1）Will prepare with ore deposit various Iron Ore Powders and quick lime be milled down to below 0.074mm respectively, respectively will be levigate after iron mine
Powder is mixed with calcium lime powder, and mixed proportion obtains mixed powder by the total alkalinity of whole materials respectively 2.70；Described iron mine
Powder selects ground hematite, magnetite powder and/or brown ocher；
（2）Mixed powder is pressed into the cylindrical specimens of Φ 3mm × 3mm respectively, pre-arcing characterisiticses measure is then carried out respectively；Survey
Protective gas protection sample is made with Ar in fixed temperature-rise period；The spy of compound is defined according to standard GB/T/T219-1996
Levy fusion temperature；The temperature increasing schedule that wherein pre-arcing characterisiticses are determined is pressed：Programming rate is controlled during room temperature ~ 1000 DEG C for 10 DEG C/min；
Programming rate is controlled when 1000 ~ 1200 DEG C for 8 DEG C/min；Programming rate is controlled when 1200 ~ 1400 DEG C for 5 DEG C/min；
（3）Temperature when sample shrinks 30% is that effective liquid phase initially forms temperaturet s, temperature when shrinking 60% is effective liquid
The temperature of termination is formed mutuallyt f, temperature ranget= t f- t sAs characteristic melting temperature；
（4）With specimen height difference when drastically shrinking for the second time when sample drastically shrinks for the first timeG= -(G 2-G 1) pacify for effective
Full amount of liquid phase；Time when drastically shrinking for the first time isτ 1, for the second time drastically shrink when time beτ 2, for the first time with second
Time between drastically shrinking is that contraction time is poorτ G=τ 2-τ 1；The formation speed of safe amount of liquid phasev=G/τ G；
（5）Melting regionτ mIt is compound under above-mentioned temperature increasing schedule, from shrinking 30% to shrinking for 60% time experienced；
（6）Selectt s, temperature ranget、Melting regionτ m, contraction time it is poorτ GWith the formation speed of safe amount of liquid phasevFive indexs
In the optimum Iron Ore Powder of more than three indexs as preferred Iron Ore Powder；Wherein tsAt 1200 ~ 1300 DEG C, tsMinimum index is most
It is excellent；, at 0 ~ 50 DEG C, t maximum Iron Ore Powder index is optimum, melting region for temperature range tτ mIt is in the range of 0 ~ 10min, most long
Index is optimum, and contraction time is poorτ GIn the range of 0 ~ 10min,τ GMaximum index is optimum, and the formation speed v of safe amount of liquid phase exists
0.100~.0.500mm·min-1In the range of, v minimum index is optimum.
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| CN107267748B (en) * | 2017-06-14 | 2018-08-28 | 东北大学 | A kind of high vanadium high-chromic vanadium-titanium ferroferrite pelletizing |
| CN107881327A (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 common iron ore |
| CN108866324A (en) * | 2018-07-20 | 2018-11-23 | 东北大学 | A method of high-titanium type vanadium-titanium magnetite ore matching is instructed using sintering basic characteristic |
| CN109765261B (en) * | 2019-01-02 | 2020-10-30 | 北京科技大学 | Experimental method for evaluating magnetite continuous crystallization performance |
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| CN102809579A (en) * | 2012-07-23 | 2012-12-05 | 辽宁科技大学 | Method for detecting high-temperature mineralization characteristic of sintered iron ores |
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