CN106834880A - A kind of preparation method of ferro-titanium - Google Patents

A kind of preparation method of ferro-titanium Download PDF

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Publication number
CN106834880A
CN106834880A CN201710078249.8A CN201710078249A CN106834880A CN 106834880 A CN106834880 A CN 106834880A CN 201710078249 A CN201710078249 A CN 201710078249A CN 106834880 A CN106834880 A CN 106834880A
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titanium
ferro
carbon
preparation
thermal reduction
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CN106834880B (en
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郑海燕
沈峰满
姜鑫
高强健
刘砚飞
梁子敬
黄文信
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Northeastern University China
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C33/00Making ferrous alloys
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21BMANUFACTURE OF IRON OR STEEL
    • C21B15/00Other processes for the manufacture of iron from iron compounds
    • C21B15/02Metallothermic processes, e.g. thermit reduction
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/02Ferrous alloys, e.g. steel alloys containing silicon
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/06Ferrous alloys, e.g. steel alloys containing aluminium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/14Ferrous alloys, e.g. steel alloys containing titanium or zirconium

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

The invention discloses a kind of preparation method of ferro-titanium, it is related to metal smelt technical field.The method includes:Carbon-thermal reduction, with vanadium titano-magnetite as raw material, coal dust carries out batch mixing for reducing agent, to the mixing of bentonite water and pelletizing that batch mixing quality 1% is added in batch mixing, the wet bulb that will be formed dry after heated at constant temperature, by the closed cooling crush of dry bulb after heating and sieve, obtain prereduction miberal powder;Thermite reaction, according to mass fraction, by 40 42% prereduction miberal powders, 21 23%Al powder, 24 26% titanium dioxides, 5 6%CaO and 7 9%KClO3Being ignited with magnesium rod after well mixed carries out self- propagating thermite reaction, will obtain ferro-titanium ingot casting after the cooling slagging-off of reacted mixture.Preparation method in the present invention reduces the consumption of aluminium, reduces production cost, and there is provided the ferro-titanium kind of diversification.

Description

A kind of preparation method of ferro-titanium
Technical field
The present invention relates to metal smelt technical field, a kind of preparation method of ferro-titanium is more particularly related to.
Background technology
Ferrotianium is a kind of relatively broad extraordinary ferroalloy of purposes.Can be used as deoxidier, degasifier, improve the mechanicalness of steel Energy;Can be used as hydrogen storage material, store hydrogen or purified hydrogen;Can be used as alloying element additive, improve performance (such as anti-corruption of steel Corrosion energy, raising Testing Tensile Strength at Elevated Temperature etc.);Can be used as inovulant, improve its mechanical performance (such as wearability);Can be used as welding rod painting Material;Additionally, ferrotianium also serves as the reducing agent that other ferroalloys and non-ferrous metal are produced with metallothermic processes;The conjunction of non-ferrous alloy Golden additive;Also it is used for chemical industry and other industry on a small quantity.
At present, China's titanium process for making iron is based on aluminothermic process, low, grade ferrotianium, the work of ferrotianium high in main production Industry technology of preparing has larger gap with developed country.Remelting law technology is more ripe, widely uses abroad, but is limited by raw material It is difficult to promote in China.Though carbothermic method can also produce ferrotianium high but be limited its application because product phosphorus content is too high System.Fused salt electrolysis process has technological process short, with metal oxide as raw material, low cost and it is environmentally friendly the characteristics of, thus An important directions as smelting high ferrotitanium alloy research, but realize that industrialization needs time.
The content of the invention
The present invention provides a kind of preparation method of ferro-titanium, by with vanadium titano-magnetite and ilmenite concentrate as raw material, adjusting Material proportion and carbon-thermal reduction temperature and time, prepare multi-level ferro-titanium, solve ferro-titanium production in the prior art Middle aluminium consumption is big, production cost problem high.
Specifically, in the present invention ferro-titanium preparation method, comprise the following steps:
(1) carbon-thermal reduction
With vanadium titano-magnetite as raw material, coal dust carries out batch mixing for reducing agent, to the swelling that batch mixing quality 1% is added in batch mixing Fully mixed after soil and form mixture, mixture is mixed and pelletizing with water, wherein, mixture is 1 with the mass ratio of water: 0.08, the wet bulb of formation is put into drying box carries out freeze-day with constant temperature, and the dry bulb obtained after drying is put into constant temperature in heating furnace Heating, the dry bulb after cooling by the closed cooling of dry bulb after heating, crushed and sieved, and obtains prereduction miberal powder;
(2) thermite reaction
According to mass fraction, by 40-42% prereduction miberal powder, 21-23%Al powder, 24-26% titanium dioxides, 5-6%CaO and 7-9%KClO3Being ignited with magnesium rod after well mixed carries out self- propagating thermite reaction, reacted mixture is cooled down and is removed the gred After obtain ferro-titanium ingot casting.
Preferably, in carbon-thermal reduction step, in vanadium titano-magnetite the mass fraction of each content composition be 48.65%TFe, 27.67%FeO, 9.98%TiO2, 28.84%SiO2, 3.85%Al2O3, 4.37%MgO, 1.94%CaO and 0.51%V2O5
Preferably, in carbon-thermal reduction step, the mass fraction of each content composition is 61.31%FC, 77.50% in coal dust TC, 9.38% ash content and 29.31% other.
Preferably, in carbon-thermal reduction step, the mass fraction of each content composition is 68.55%SiO in bentonite2、 0.97%CaO, 1.80%MgO, 15.00%Al2O3, 0.96%K2O, 2.00%Na2O and 0.023%S.
Preferably, in carbon-thermal reduction step, vanadium titano-magnetite and coal dust carry out dispensing for 0.8 according to carbon ratio.
Preferably, in carbon-thermal reduction step, drying temperature is 105 DEG C in drying box, and drying time is 5h.
Preferably, in carbon-thermal reduction step, heating-up temperature is 1200 DEG C in heating furnace, and the heat time is 10min.
The invention has the advantages that:
In the present invention, by with vanadium titano-magnetite and ilmenite concentrate as raw material, regulation material proportion and carbon-thermal reduction temperature and Time, multi-level ferro-titanium is prepared, reduce the consumption of aluminium, reduce production cost, and there is provided the titanium of diversification Ferroalloy kind.
Brief description of the drawings
In order to illustrate more clearly of technical scheme of the invention or of the prior art, below will be to embodiment or prior art The accompanying drawing to be used needed for description is briefly described, it should be apparent that, drawings in the following description are only of the invention Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this A little accompanying drawings obtain other accompanying drawings.
Fig. 1 is ferro-titanium SEM figures prepared by the embodiment of the present invention 1.
Specific embodiment
Embodiment 1
The preparation method of the ferro-titanium that the embodiment of the present invention 1 is provided, comprises the following steps:
(1) carbon-thermal reduction
With vanadium titano-magnetite as raw material, coal dust carries out batch mixing for reducing agent, wherein, vanadium titano-magnetite and coal dust are according to carbon Than carrying out dispensing for 0.8, mixture then is formed to fully being mixed after the bentonite that batch mixing quality 1% is added in batch mixing, will be mixed Compound mixes and pelletizing with water, wherein, mixture is 1 with the mass ratio of water:0.08, the wet bulb of formation is put into 105 DEG C of dryings Freeze-day with constant temperature is carried out in case, drying time is 5h, the dry bulb obtained after drying is put into heated at constant temperature, heating-up temperature in heating furnace It is 1200 DEG C, the heat time is 10min, the dry bulb after heating is taken out into closed cooling, the dry bulb after cooling is crushed and 200 are crossed Mesh sieve, obtains prereduction miberal powder;
(2) thermite reaction
According to mass fraction, by 41.6% prereduction miberal powder, 21%Al powder, 25% titanium dioxide, 5.2%CaO and 7.2% KClO3Being ignited with magnesium rod after well mixed carries out self- propagating thermite reaction, will be obtained after the cooling slagging-off of reacted mixture To ferro-titanium ingot casting.
Wherein, each raw material main chemical compositions are respectively in carbon-thermal reduction:
The mass fraction of each content composition is 48.65%TFe, 27.67%FeO, 9.98%TiO in vanadium titano-magnetite2、 28.84%SiO2, 3.85%Al2O3, 4.37%MgO, 1.94%CaO and 0.51%V2O5
In coal dust the mass fraction of each content composition be 61.31%FC, 77.50%TC, 9.38% ash content and 29.31% its He.
The mass fraction of each content composition is 68.55%SiO in bentonite2, 0.97%CaO, 1.80%MgO, 15.00% Al2O3, 0.96%K2O, 2.00%Na2O and 0.023%S.
The experimental program of thermit reaction is as shown in table 1 in embodiment 1.
The experimental program of the thermit reaction of table 1
The composition of the ferro-titanium prepared in embodiment 1 is as shown in table 2.
The composition (wt.%) of the ferro-titanium of table 2
Found out by table 2, aluminium content meets national standard in the ferro-titanium obtained by preparation, and aluminium content is less than 8%, silicon Content also complies with design requirement, therefore, the hot prereduction-aluminothermic reduction of carbon with prereduction miberal powder and titanium dioxide as raw material it is compound The process that reducing process prepares ferro-titanium is feasible.
Ferro-titanium to being prepared in the present embodiment 1 detects that its SEM result in Fig. 1 as shown in figure 1, by can be seen that Ferro-titanium distribution is more uniform.A areas area is big, color brilliant white, and for the B areas that compare, titanium high alumina is few in alloy.B areas area Small, color is gloomy, is gathered in around A areas, and for the A areas that compare, Aluminum in Alloy titanium high is few.C areas are tiny Al2O3Field trash.
Embodiment 2
The preparation method of the ferro-titanium that the embodiment of the present invention 2 is provided, comprises the following steps:
(1) carbon-thermal reduction
With vanadium titano-magnetite as raw material, coal dust carries out batch mixing for reducing agent, wherein, vanadium titano-magnetite and coal dust are according to carbon Than carrying out dispensing for 0.8, mixture then is formed to fully being mixed after the bentonite that batch mixing quality 1% is added in batch mixing, will be mixed Compound mixes and pelletizing with water, wherein, mixture is 1 with the mass ratio of water:0.08, the wet bulb of formation is put into 105 DEG C of dryings Freeze-day with constant temperature is carried out in case, drying time is 5h, the dry bulb obtained after drying is put into heated at constant temperature, heating-up temperature in heating furnace It is 1200 DEG C, the heat time is 10min, the dry bulb after heating is taken out into closed cooling, the dry bulb after cooling is crushed and 200 are crossed Mesh sieve, obtains prereduction miberal powder;
(2) thermite reaction
According to mass fraction, by 40% prereduction miberal powder, 23%Al powder, 24% titanium dioxide, 5%CaO and 8%KClO3It is mixed Being ignited with magnesium rod after closing uniformly carries out self- propagating thermite reaction, will obtain ferrotianium conjunction after the cooling slagging-off of reacted mixture Golden ingot casting.
Wherein, each raw material main chemical compositions are respectively in carbon-thermal reduction:
The mass fraction of each content composition is 48.65%TFe, 27.67%FeO, 9.98%TiO in vanadium titano-magnetite2、 28.84%SiO2, 3.85%Al2O3, 4.37%MgO, 1.94%CaO and 0.51%V2O5
In coal dust the mass fraction of each content composition be 61.31%FC, 77.50%TC, 9.38% ash content and 29.31% its He.
The mass fraction of each content composition is 68.55%SiO in bentonite2, 0.97%CaO, 1.80%MgO, 15.00% Al2O3, 0.96%K2O, 2.00%Na2O and 0.023%S.
The experimental program of thermit reaction is as shown in table 3 in embodiment 2.
The experimental program of the thermit reaction of table 3
Embodiment 3
The preparation method of the ferro-titanium that the embodiment of the present invention 3 is provided, comprises the following steps:
(1) carbon-thermal reduction
With vanadium titano-magnetite as raw material, coal dust carries out batch mixing for reducing agent, wherein, vanadium titano-magnetite and coal dust are according to carbon Than carrying out dispensing for 0.8, mixture then is formed to fully being mixed after the bentonite that batch mixing quality 1% is added in batch mixing, will be mixed Compound mixes and pelletizing with water, wherein, mixture is 1 with the mass ratio of water:0.08, the wet bulb of formation is put into 105 DEG C of dryings Freeze-day with constant temperature is carried out in case, drying time is 5h, the dry bulb obtained after drying is put into heated at constant temperature, heating-up temperature in heating furnace It is 1200 DEG C, the heat time is 10min, the dry bulb after heating is taken out into closed cooling, the dry bulb after cooling is crushed and 200 are crossed Mesh sieve, obtains prereduction miberal powder;
(2) thermite reaction
According to mass fraction, by 40% prereduction miberal powder, 21%Al powder, 24% titanium dioxide, 6%CaO and 9%KClO3It is mixed Being ignited with magnesium rod after closing uniformly carries out self- propagating thermite reaction, will obtain ferrotianium conjunction after the cooling slagging-off of reacted mixture Golden ingot casting.
Wherein, each raw material main chemical compositions are respectively in carbon-thermal reduction:
The mass fraction of each content composition is 48.65%TFe, 27.67%FeO, 9.98%TiO in vanadium titano-magnetite2、 28.84%SiO2, 3.85%Al2O3, 4.37%MgO, 1.94%CaO and 0.51%V2O5
In coal dust the mass fraction of each content composition be 61.31%FC, 77.50%TC, 9.38% ash content and 29.31% its He.
The mass fraction of each content composition is 68.55%SiO in bentonite2, 0.97%CaO, 1.80%MgO, 15.00% Al2O3, 0.96%K2O, 2.00%Na2O and 0.023%S.
The experimental program of thermit reaction is as shown in table 4 in embodiment 3.
The experimental program of the thermit reaction of table 4
Embodiment 4
The preparation method of the ferro-titanium that the embodiment of the present invention 4 is provided, comprises the following steps:
(1) carbon-thermal reduction
With vanadium titano-magnetite as raw material, coal dust carries out batch mixing for reducing agent, wherein, vanadium titano-magnetite and coal dust are according to carbon Than carrying out dispensing for 0.8, mixture then is formed to fully being mixed after the bentonite that batch mixing quality 1% is added in batch mixing, will be mixed Compound mixes and pelletizing with water, wherein, mixture is 1 with the mass ratio of water:0.08, the wet bulb of formation is put into 105 DEG C of dryings Freeze-day with constant temperature is carried out in case, drying time is 5h, the dry bulb obtained after drying is put into heated at constant temperature, heating-up temperature in heating furnace It is 1200 DEG C, the heat time is 10min, the dry bulb after heating is taken out into closed cooling, the dry bulb after cooling is crushed and 200 are crossed Mesh sieve, obtains prereduction miberal powder;
(2) thermite reaction
According to mass fraction, by 41% prereduction miberal powder, 21%Al powder, 26% titanium dioxide, 5%CaO and 7%KClO3It is mixed Being ignited with magnesium rod after closing uniformly carries out self- propagating thermite reaction, will obtain ferrotianium conjunction after the cooling slagging-off of reacted mixture Golden ingot casting.
Wherein, each raw material main chemical compositions are respectively in carbon-thermal reduction:
In vanadium titano-magnetite the mass fraction of each content composition be 48.65%TFe, 27.67%FeO, 9.98%TiO, 28.84%SiO, 3.85%Al2O3, 4.37%MgO, 1.94%CaO and 0.51%V2O5
In coal dust the mass fraction of each content composition be 61.31%FC, 77.50%TC, 9.38% ash content and 29.31% its He.
The mass fraction of each content composition is 68.55%SiO2,0.97%CaO, 1.80%MgO, 15.00% in bentonite Al2O3,0.96%K2O, 2.00%Na2O and 0.023%S.
The experimental program of thermit reaction is as shown in table 5 in embodiment 4.
The experimental program of the thermit reaction of table 5
, but those skilled in the art once know basic creation although preferred embodiments of the present invention have been described Property concept, then can make other change and modification to these embodiments.So, appended claims are intended to be construed to include excellent Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification without deviating from essence of the invention to the present invention God and scope.So, if these modifications of the invention and modification belong to the scope of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to comprising these changes and modification.

Claims (7)

1. a kind of preparation method of ferro-titanium, it is characterised in that comprise the following steps:
(1) carbon-thermal reduction
With vanadium titano-magnetite as raw material, coal dust carries out batch mixing for reducing agent, to after the bentonite that batch mixing quality 1% is added in batch mixing Fully mix and form mixture, mixture is mixed and pelletizing with water, wherein, mixture is 1 with the mass ratio of water:0.08, will The wet bulb of formation carries out freeze-day with constant temperature in being put into drying box, and the dry bulb obtained after drying is put into heated at constant temperature in heating furnace, will The closed cooling of dry bulb after heating, the dry bulb after cooling is crushed and sieved, and obtains prereduction miberal powder;
(2) thermite reaction
According to mass fraction, by 40-42% prereduction miberal powder, 21-23%Al powder, 24-26% titanium dioxides, 5-6%CaO and 7- 9%KClO3Being ignited with magnesium rod after well mixed carries out self- propagating thermite reaction, after the cooling slagging-off of reacted mixture Obtain ferro-titanium ingot casting.
2. the preparation method of ferro-titanium according to claim 1, it is characterised in that in carbon-thermal reduction step, vanadium titanium magnetic The mass fraction of each content composition is 48.65%TFe, 27.67%FeO, 9.98%TiO in iron ore2, 28.84%SiO2、 3.85%Al2O3, 4.37%MgO, 1.94%CaO and 0.51%V2O5
3. the preparation method of ferro-titanium according to claim 1, it is characterised in that in carbon-thermal reduction step, in coal dust The mass fraction of each content composition be 61.31%FC, 77.50%TC, 9.38% ash content and 29.31% other.
4. the preparation method of ferro-titanium according to claim 1, it is characterised in that in carbon-thermal reduction step, bentonite In each content composition mass fraction be 68.55%SiO2, 0.97%CaO, 1.80%MgO, 15.00%Al2O3, 0.96% K2O, 2.00%Na2O and 0.023%S.
5. the preparation method of ferro-titanium according to claim 1, it is characterised in that in carbon-thermal reduction step, vanadium titanium magnetic Iron ore and coal dust carry out dispensing for 0.8 according to carbon ratio.
6. the preparation method of ferro-titanium according to claim 1, it is characterised in that in carbon-thermal reduction step, drying box Middle drying temperature is 105 DEG C, and drying time is 5h.
7. the preparation method of ferro-titanium according to claim 1, it is characterised in that in carbon-thermal reduction step, heating furnace Middle heating-up temperature is 1200 DEG C, and the heat time is 10min.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109022788A (en) * 2018-08-31 2018-12-18 东北大学 A method of preparing ferro-titanium
CN109112333A (en) * 2018-08-31 2019-01-01 东北大学 A method of ferro-titanium is prepared using carbon thermal reduction-self- propagating
CN116287829A (en) * 2023-03-24 2023-06-23 承德天大钒业有限责任公司 Aluminum-molybdenum-carbon alloy and preparation method thereof

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CN101597774A (en) * 2009-06-29 2009-12-09 重庆大学 A kind of method of utilizing iron tailings of low-grade vanadium titano to prepare ferro-titanium
CN104131128A (en) * 2014-07-21 2014-11-05 东北大学 Aluminum thermal self-propagating-injection depth reduction based method for preparing ferro-titanium

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109022788A (en) * 2018-08-31 2018-12-18 东北大学 A method of preparing ferro-titanium
CN109112333A (en) * 2018-08-31 2019-01-01 东北大学 A method of ferro-titanium is prepared using carbon thermal reduction-self- propagating
CN116287829A (en) * 2023-03-24 2023-06-23 承德天大钒业有限责任公司 Aluminum-molybdenum-carbon alloy and preparation method thereof
CN116287829B (en) * 2023-03-24 2024-06-07 承德天大钒业有限责任公司 Aluminum-molybdenum-carbon alloy and preparation method thereof

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