CN106834880A - A kind of preparation method of ferro-titanium - Google Patents
A kind of preparation method of ferro-titanium Download PDFInfo
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- 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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- thermal reduction
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- 229910001200 Ferrotitanium Inorganic materials 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 239000000203 mixture Substances 0.000 claims abstract description 46
- 230000009467 reduction Effects 0.000 claims abstract description 26
- 238000006243 chemical reaction Methods 0.000 claims abstract description 22
- 238000002156 mixing Methods 0.000 claims abstract description 22
- 239000000843 powder Substances 0.000 claims abstract description 22
- 239000002817 coal dust Substances 0.000 claims abstract description 19
- 238000001816 cooling Methods 0.000 claims abstract description 19
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 19
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims abstract description 16
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 16
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000003832 thermite Substances 0.000 claims abstract description 14
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000000440 bentonite Substances 0.000 claims abstract description 12
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 8
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 8
- 235000010215 titanium dioxide Nutrition 0.000 claims abstract description 8
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000005266 casting Methods 0.000 claims abstract description 7
- 238000005453 pelletization Methods 0.000 claims abstract description 7
- 230000001902 propagating effect Effects 0.000 claims abstract description 7
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical class [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims abstract description 3
- 238000001035 drying Methods 0.000 claims description 22
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- 229910052593 corundum Inorganic materials 0.000 claims description 12
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 12
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 229910052681 coesite Inorganic materials 0.000 claims description 6
- 229910052906 cristobalite Inorganic materials 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 229910052682 stishovite Inorganic materials 0.000 claims description 6
- 229910052905 tridymite Inorganic materials 0.000 claims description 6
- -1 wherein Substances 0.000 claims description 6
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 3
- GFNGCDBZVSLSFT-UHFFFAOYSA-N titanium vanadium Chemical compound [Ti].[V] GFNGCDBZVSLSFT-UHFFFAOYSA-N 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 6
- 239000004411 aluminium Substances 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- 241001062472 Stokellia anisodon Species 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 239000004408 titanium dioxide Substances 0.000 description 5
- 206010013786 Dry skin Diseases 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000010936 titanium Substances 0.000 description 4
- 229910052719 titanium Inorganic materials 0.000 description 4
- 229910001021 Ferroalloy Inorganic materials 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- YDZQQRWRVYGNER-UHFFFAOYSA-N iron;titanium;trihydrate Chemical compound O.O.O.[Ti].[Fe] YDZQQRWRVYGNER-UHFFFAOYSA-N 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 229910021652 non-ferrous alloy Inorganic materials 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000011232 storage material Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B15/00—Other processes for the manufacture of iron from iron compounds
- C21B15/02—Metallothermic processes, e.g. thermit reduction
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
Landscapes
- 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
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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| 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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