CN110156019A - It is used to prepare the electric arc furnaces and titanium carbide slag preparation method of titanium carbide slag - Google Patents
It is used to prepare the electric arc furnaces and titanium carbide slag preparation method of titanium carbide slag Download PDFInfo
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- CN110156019A CN110156019A CN201910543633.XA CN201910543633A CN110156019A CN 110156019 A CN110156019 A CN 110156019A CN 201910543633 A CN201910543633 A CN 201910543633A CN 110156019 A CN110156019 A CN 110156019A
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- Prior art keywords
- slag
- titanium carbide
- titanium
- carbide slag
- electric arc
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- 239000002893 slag Substances 0.000 title claims abstract description 90
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 238000010891 electric arc Methods 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 49
- 239000010936 titanium Substances 0.000 claims abstract description 38
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 38
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000012141 concentrate Substances 0.000 claims abstract description 16
- YDZQQRWRVYGNER-UHFFFAOYSA-N iron;titanium;trihydrate Chemical compound O.O.O.[Ti].[Fe] YDZQQRWRVYGNER-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000002347 injection Methods 0.000 claims abstract description 11
- 239000007924 injection Substances 0.000 claims abstract description 11
- 238000010079 rubber tapping Methods 0.000 claims abstract description 10
- 238000003763 carbonization Methods 0.000 claims abstract description 6
- 239000003638 chemical reducing agent Substances 0.000 claims description 26
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 22
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 16
- 239000007921 spray Substances 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- 229910052799 carbon Inorganic materials 0.000 claims description 9
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 5
- 230000009467 reduction Effects 0.000 claims description 3
- 241001062472 Stokellia anisodon Species 0.000 claims 1
- 238000007664 blowing Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract description 5
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 abstract description 5
- 239000004411 aluminium Substances 0.000 abstract description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052782 aluminium Inorganic materials 0.000 abstract description 5
- 229910052791 calcium Inorganic materials 0.000 abstract description 5
- 239000011575 calcium Substances 0.000 abstract description 5
- 229910052749 magnesium Inorganic materials 0.000 abstract description 5
- 239000011777 magnesium Substances 0.000 abstract description 5
- 239000010703 silicon Substances 0.000 abstract description 5
- 229910052710 silicon Inorganic materials 0.000 abstract description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 239000002910 solid waste Substances 0.000 abstract description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 abstract description 2
- 230000002411 adverse Effects 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 230000000116 mitigating effect Effects 0.000 abstract description 2
- 230000007704 transition Effects 0.000 abstract 1
- 238000003723 Smelting Methods 0.000 description 7
- 238000005255 carburizing Methods 0.000 description 7
- 239000003153 chemical reaction reagent Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- GFNGCDBZVSLSFT-UHFFFAOYSA-N titanium vanadium Chemical compound [Ti].[V] GFNGCDBZVSLSFT-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- HGWOWDFNMKCVLG-UHFFFAOYSA-N [O--].[O--].[Ti+4].[Ti+4] Chemical compound [O--].[O--].[Ti+4].[Ti+4] HGWOWDFNMKCVLG-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000012913 prioritisation Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/90—Carbides
- C01B32/914—Carbides of single elements
- C01B32/921—Titanium carbide
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B5/00—Treatment of metallurgical slag ; Artificial stone from molten metallurgical slag
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D11/00—Arrangement of elements for electric heating in or on furnaces
- F27D11/08—Heating by electric discharge, e.g. arc discharge
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D25/00—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention relates to titanium carbide slag preparation fields, especially it is a kind of realize high-titanium blast furnace slag, fine fraction ilmenite concentrate, titanium slag dedusting ash comprehensive utilization the electric arc furnaces for being used to prepare titanium carbide slag and titanium carbide slag preparation method, including furnace body and the bell being set on furnace body, the electric arc furnaces is additionally provided with hot charging system, injection system and slag-tapping system.The present invention, which realizes, is applied to fine fraction ilmenite concentrate and titanium slag dedusting ash in the carbonisation of high-titanium blast furnace slag, efficiently uses titanium therein, ferrous components, and the oxides such as extra calcium, magnesium, aluminium, silicon will not cause adverse effect to titanium carbide slag product.By using the mode of blowing charging, it can effectively avoid the meticulous problem of material size, do not easily cause environmental pollution.Not only the effective use of solid waste may be implemented, but also be conducive to transition process of the high-titanium blast furnace slag to titanium carbide slag, be of great significance to mitigating environmental protection pressure and improving titanium resource utilization rate.Present invention is particularly suitable among titanium carbide slag preparation.
Description
Technical field
The present invention relates to titanium carbide slag preparation field, especially a kind of electric arc furnaces and titanium carbide for being used to prepare titanium carbide slag
Slag preparation method.
Background technique
Smelting vanadium-titanium magnetite by blast furnace can generate a large amount of clinker, these clinkers about containing 10%~30% titanium dioxide
Titanium, referred to as high-titanium blast furnace slag.Smelting vanadium-titanium magnetite by blast furnace 1 ton of molten iron of every production about generates 0.65 ton of clinker, largely
Titanium-containing blast furnace slag stockpiling not only pollute the environment, also will cause the serious waste of titanium resource.
When ilmenite concentrate is used to smelting titanium slag, it is desirable that its granularity cannot be meticulous, and 200 mesh or less is generally required to be no more than 10%.
This is because granularity is meticulous, Dust Capacity increases in smelting process, can reduce titanium yield, while material gas permeability is deteriorated, be easy life
At unusual service conditions such as foamed slags, influences environment and smelting process is normally carried out.The ilmenite concentrate for normally entering titanium slag electric furnace will carry out
The ilmenite concentrate of classification processing, a part of granularity relatively thin (generally less than 200 mesh) cannot be utilized well.In addition, ilmenite concentrate smelting
It can be collected into a large amount of dedusting ash during refining titanium slag, according to statistics, 1 ton of titanium slag of every production about generates the dedusting of 85~100kg
Ash.These dedusting ash are at present based on solid waste heap abandoning processing.
Fine fraction ilmenite concentrate contains 40%~50% TiO2, 30%~40% ferriferous oxide, remaining for calcium, magnesium,
The oxides such as aluminium, silicon；Titanium slag dedusting ash contains 20%~45% TiO2, 20~40% ferriferous oxide, remaining for calcium,
The oxides such as magnesium, aluminium, silicon；High-titanium blast furnace slag contains 10%~30% TiO2, 3~10% ferriferous oxide, remaining is
The oxides such as calcium, magnesium, aluminium, silicon.These three titaniferous material components are similar, and high-titanium blast furnace slag is at present mainly to prepare titanium carbide
Slag, production titanium tetrachloride are mainly to utilize route.The fine fraction ilmenite concentrate and titanium slag dedusting ash that titanium slag smeltery generates are all because of grain
Degree is thinner, cannot effectively utilize at present.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of realization high-titanium blast furnace slags, fine fraction ilmenite concentrate, titanium slag
The electric arc furnaces for being used to prepare titanium carbide slag and titanium carbide slag preparation method of the comprehensive utilization of dedusting ash.
The technical solution adopted by the present invention to solve the technical problems is: it is used to prepare the electric arc furnaces of titanium carbide slag, including
Furnace body and the bell being set on furnace body, the electric arc furnaces are additionally provided with hot charging system, injection system and slag-tapping system.
Further, the hot charging system is the chute being set on bell.
Further, the injection system is the spray gun for being set to sidewall of the furnace body face.
Further, the slag-tapping system is the slag notch for being set to lower portion of furnace body.
Further, titanium carbide slag preparation method, firstly, the first titaniferous material is entered electric arc by hot charging system
Furnace, feeding temperature-raising；Secondly, the second titaniferous material and reducing agent are entered electric arc furnaces, reducing agent reduction and carbonization by injection system
All titaniferous materials；Finally, after the completion of reaction, clinker is discharged from slag-tapping system, through cooling broken except iron obtains titanium carbide slag.
Further, first titaniferous material is high-titanium blast furnace slag, TiO2Content 10%~30%.
Further, second titaniferous material is fine fraction ilmenite concentrate of the granularity less than 200 mesh, titanium slag smelting dedusting
At least one of ash, TiO2Content 20%~50%.
Further, the fixation carbon content of reducing agent is greater than 70%, granularity is less than 1mm, and moisture is less than 1.5%.
Further, the fixed carbon content of reducing agent is greater than 80%, granularity is less than 0.2mm, and moisture is less than 0.5%.
Further, the second titaniferous material additional amount is the 5%~10% of the first titaniferous material additional amount, it is described
Reducing agent addition amount is the 5%~25% of the first titaniferous material additional amount.
The beneficial effects of the present invention are: the present invention, which is realized, is applied to high titania type for fine fraction ilmenite concentrate and titanium slag dedusting ash
In the carbonisation of blast furnace slag, titanium therein, ferrous components can be efficiently used, the oxides such as extra calcium, magnesium, aluminium, silicon will not
Adverse effect is caused to titanium carbide slag product.By using the mode of blowing charging, it can effectively avoid that material size is meticulous to ask
Topic, does not easily cause environmental pollution.In addition, the iron in fine fraction ilmenite concentrate and titanium slag dedusting ash grows up to the crystal of titanium carbide slag
There is effect.Not only the effective use of solid waste may be implemented, but also be conducive to transformation of the high-titanium blast furnace slag to titanium carbide slag
Journey is of great significance to mitigating environmental protection pressure and improving titanium resource utilization rate.Present invention is particularly suitable for titanium carbide slag preparations
Among.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
In the figure, it is marked as furnace body 1, bell 2, chute 3, spray gun 4, slag notch 5.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
The electric arc furnaces for being used to prepare titanium carbide slag as shown in Figure 1, including furnace body 1 and the bell 2 that is set on furnace body 1,
The electric arc furnaces is additionally provided with hot charging system, injection system and slag-tapping system.In practical operation, firstly, by the first titaniferous object
Material enters electric arc furnaces, feeding temperature-raising by hot charging system；Secondly, the second titaniferous material and reducing agent are entered by injection system
Electric arc furnaces, all titaniferous materials of reducing agent reduction and carbonization；Finally, after the completion of reaction, clinker is discharged from slag-tapping system, through cooling
The broken iron that removes obtains titanium carbide slag.
It is simplified to carry out structure to electric arc furnaces, as shown in Figure 1, can choose such scheme: the preferred hot charging
System is the chute 3 being set on bell 2；It is preferred that the injection system is the spray gun 4 for being set to 1 side wall surface of furnace body；It is preferred that institute
Stating slag-tapping system is the slag notch 5 for being set to 1 lower part of furnace body.Electric arc furnaces after structure optimization is provided with low manufacture cost, reaction
The good technical advantage of effect.In addition, sealing device is preferably added between the chute 3 and bell 2, to guarantee around chute 3
There is preferable sealing effect.In order to obtain ideal blowing effect, preferably injection system includes at least two-way spray gun 4, and spray gun 4 is solid
It is scheduled on electric stove wall.
For specific titanium carbide slag preparation method, in order to more preferably be prepared as a result, can be in homologue
Following improve and optimizate is done in the selection and proportion of material: first titaniferous material is high-titanium blast furnace slag, TiO2Content
10%~30%；Second titaniferous material is that granularity is smelted in dedusting ash extremely less than fine fraction ilmenite concentrate, the titanium slag of 200 mesh
Few one kind, TiO2Content 20%~50%；The fixed carbon content of reducing agent is greater than 70%, and granularity is less than 1mm, and moisture is less than
1.5%, the fixed carbon content of preferred reducing agent is greater than 80%, and granularity is less than 0.2mm, and moisture is less than 0.5%.
For the addition of specific material, it may be considered that the second titaniferous material additional amount is the addition of the first titaniferous material
The 0~15% of amount, preferably 5%~10%.The reducing agent addition amount, which should meet, is totally converted the titanium in all titaniferous materials
For titanium carbide and excessive 110%~130%, generally the 5%~25% of the first titaniferous material additional amount.It is also an option that second
Titaniferous material and reducing agent individually spray into electric furnace, and blowing enters electric furnace together after can also mixing, it can clever according to actual needs
It is living to choose.
In addition, there are also following prioritization schemes for material addition: electric furnace feeding temperature-raising is added in the first titaniferous material, it is fusion
Slag temperature > 1400 DEG C are initially added into the second titaniferous material and reducing agent, single 4 90~160kg/min of injecting velocity of spray gun.Also
1400~1650 DEG C of former carburizing temperature, carbonization time are (5min~10min) × titaniferous material additional amount.
Embodiment
Embodiment 1
Electric furnace slag mouth chock plug is opened, by the first titaniferous material (TiO2Content 10%) 20 tons entered by 3 hot charging of chute
In electric furnace, chock plug, feeding temperature-raising are closed.Fine fraction ilmenite concentrate is mixed as the second titaniferous material with reducing agent, second
Titaniferous material TiO2Content 45%, 1 ton of additional amount, reducing agent fixed carbon 75%, granularity is less than 1mm, moisture 1%, additional amount 1.5
Ton.Electric 1400 DEG C of temperature of in-furnace slag is measured, 4 valve of No. 2 spray gun is opened, is initially added into the mixed of the second titaniferous material and reducing agent
Close object, single rifle injecting velocity 90kg/min.Electric 1450 DEG C~1600 DEG C of in-furnace temperature, carburizing reagent time are maintained during blowing
100min.After carburizing reagent, slag notch is opened using machine of blocking up is opened, is slagged tap.Slag discharging is fetched water after cooling, is crushed and is removed iron
Obtain titanium carbide slag.
Embodiment 2
Electric furnace slag mouth chock plug is opened, by the first titaniferous material (TiO2Content 22%) 40 tons entered by 3 hot charging of chute
In electric furnace, chock plug, feeding temperature-raising are closed.Titanium slag dedusting ash is mixed as the second titaniferous material with reducing agent, second contains
Titanium material TiO2Content 25%, 4 tons of additional amount, reducing agent fixed carbon 80%, granularity is less than 0.5mm, moisture 0.5%, additional amount 8
Ton.Electric 1450 DEG C of temperature of in-furnace slag is measured, 4 valve of No. 2 spray gun is opened, is initially added into the mixed of the second titaniferous material and reducing agent
Close object, single rifle injecting velocity 130kg/min.Electric 1500 DEG C~1650 DEG C of in-furnace temperature is maintained during blowing, when carburizing reagent
Between 300min.After carburizing reagent, slag notch is opened using machine of blocking up is opened, is slagged tap.Slag discharging is broken to remove after Slow cooling
Iron obtains titanium carbide slag.
Embodiment 3
Electric furnace slag mouth chock plug is opened, by the first titaniferous material (TiO2Content 30%) 60 tons entered by 3 hot charging of chute
In electric furnace, chock plug, feeding temperature-raising are closed.Using titanium slag dedusting ash as the second titaniferous material, the second titaniferous material TiO2Content
35%, 10 tons of additional amount, reducing agent fixed carbon 85%, granularity be less than 0.2mm, moisture 0.5%, 15 tons of additional amount.Measure electric furnace
1450 DEG C of interior slag temperature opens 4 valve of No. 3 spray gun, is initially added into the second titaniferous material and reducing agent, the second titaniferous material and
Reducing agent individually sprays into electric furnace, single rifle injecting velocity 150kg/min.Maintained during blowing electric 1400 DEG C of in-furnace temperature~
1650 DEG C, carburizing reagent time 600min.After carburizing reagent, slag notch is opened using machine of blocking up is opened, is slagged tap.Slag discharging warp
It is broken except iron obtains titanium carbide slag after water quenching cooling.
By the above embodiments, high-titanium blast furnace slag, fine fraction ilmenite concentrate or titanium slag dedusting ash have obtained abundant benefit
With.Technical advantage of the invention is fairly obvious, and market promotion prospect is wide.
Claims (10)
1. being used to prepare the electric arc furnaces of titanium carbide slag, including furnace body (1) and the bell (2) being set on furnace body (1), feature exists
In: the electric arc furnaces is additionally provided with hot charging system, injection system and slag-tapping system.
2. being used to prepare the electric arc furnaces of titanium carbide slag as described in claim 1, it is characterised in that: the hot charging system is setting
In the chute (3) on bell (2).
3. being used to prepare the electric arc furnaces of titanium carbide slag as claimed in claim 1 or 2, it is characterised in that: the injection system is
It is set to the spray gun (4) of furnace body (1) side wall surface.
4. being used to prepare the electric arc furnaces of titanium carbide slag as claimed in claim 1 or 2, it is characterised in that: the slag-tapping system is
It is set to the slag notch (5) of furnace body (1) lower part.
5. the titanium carbide slag preparation method carried out using the electric arc furnaces for being used to prepare titanium carbide slag described in claim 1,
It is characterized in that: firstly, the first titaniferous material is entered electric arc furnaces, feeding temperature-raising by hot charging system；Secondly, by the second titaniferous object
Material and reducing agent by injection system enter electric arc furnaces, all titaniferous materials of reducing agent reduction and carbonization；Finally, terminating in reaction
Afterwards, clinker is discharged from slag-tapping system, through cooling broken except iron obtains titanium carbide slag.
6. titanium carbide slag preparation method as claimed in claim 5, it is characterised in that: first titaniferous material is that high titania type is high
Clinker, TiO2Content 10%~30%.
7. such as titanium carbide slag preparation method described in claim 5 or 6, it is characterised in that: second titaniferous material is granularity
Fine fraction ilmenite concentrate, titanium slag less than 200 mesh smelt at least one of dedusting ash, TiO2Content 20%~50%.
8. such as titanium carbide slag preparation method described in claim 5 or 6, it is characterised in that: the fixation carbon content of reducing agent is greater than
70%, granularity is less than 1mm, and moisture is less than 1.5%.
9. titanium carbide slag preparation method as claimed in claim 8, it is characterised in that: the fixed carbon content of reducing agent is greater than 80%,
Granularity is less than 0.2mm, and moisture is less than 0.5%.
10. such as titanium carbide slag preparation method described in claim 5 or 6, it is characterised in that: the second titaniferous material additional amount
Be the 5%~10% of the first titaniferous material additional amount, the reducing agent addition amount be the first titaniferous material additional amount 5%~
25%.
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