CN109179494A - A method of synthetic rutile is prepared by ilmenite concentrate - Google Patents
A method of synthetic rutile is prepared by ilmenite concentrate Download PDFInfo
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- CN109179494A CN109179494A CN201811172623.1A CN201811172623A CN109179494A CN 109179494 A CN109179494 A CN 109179494A CN 201811172623 A CN201811172623 A CN 201811172623A CN 109179494 A CN109179494 A CN 109179494A
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- ilmenite
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G23/00—Compounds of titanium
- C01G23/04—Oxides; Hydroxides
- C01G23/047—Titanium dioxide
Abstract
The present invention relates to a kind of method of synthetic rutile, this method includes that five steps such as ilmenite classification, oxidizing roasting, reduction roasting, fluoride salt segmentation acidleach removal of impurities, washing, calcining obtain high-grade synthetic rutile later.The present invention is by salt Ore Leaching through the modified ilmenite of redox, obtain the problems such as synthetic rutile calcium-magnesium content is high, grade is low, this method is during acidleach using fluoride salt segmentation acidleach removal of impurities, increase the purification capacity that hydrochloric acid is used alone, especially to the purification capacity of calcium, it is high to prepare synthetic rutile grade, and calcium-magnesium content is lower, it can be directly as the raw material of chloridising.This method technique and equipment are simple and convenient to operate, cost is relatively low, are easy to realize industrial production.For synthetic rutile grade obtained 90% or more, impurity removal effect is preferable by means of the present invention, and calcium and magnesium total content is below 0.5%.The raw material used in the present invention is by Panxi Area, Sichuan Province ilmenite.
Description
Technical field
The present invention relates to a kind of methods for preparing synthetic rutile by ilmenite concentrate, belong to chemical industry metallurgical field.
Background technique
The ilmenite in China is resourceful, and Panxi Area, Sichuan Province possesses the titanium ore in China 90%, but the ilmenite knot of this area
Structure is fine and close, and obtained ilmenite concentrate titanium grade is low, and calcium-magnesium content is high, existing to be handled using electric furnace smelting process and Reductive leaching
Ilmenite concentrate cannot be removed effectively the impurity such as the calcium and magnesium in ilmenite concentrate, while the rich-titanium material grade prepared is lower, is not suitable for as boiling
The raw material of chlorination is risen, the ilmenite of Panxi Diqu is mainly as the raw material of sulfate process titanium dioxide at present, and titanium white chloride production is main
Or rely on imported raw material.In order to make full use of the titanium ore resource in China, many enterprises and scientific research institution begin one's study and use China
High calcium picrocrichtonite prepare be suitble to fluidizing chlorination synthetic rutile.
CN101244841A Chinese patent literature discloses a kind of method of synthetic rutile, and this method is by ilmenite
High temperature oxidation roasting is first carried out, using reduction roasting, then using the leaching removal of impurities of hydrochloric acid normal pressure, can be obtained after drying and calcining
Synthetic rutile product.After this method reduction roasting, the ilmenite concentrate after needing to roast carries out magnetic separation, selects magnetic titanium essence
Mine, though good impurity removing effect, operates relative complex.CN101412536A Chinese patent literature equally also discloses a kind of artificial
The method of rutile, this method is also that ilmenite is first carried out high temperature oxidation roasting, using reduction roasting, then uses hydrochloric acid
Synthetic rutile product can be obtained after multiple-contact removal of impurities, drying and calcining, which sends out side in method and No. CN101244841A
Method difference is that oxidation and reduction roasting carry out in a fluidized bed in the patent, and acidleach is the contact removal of impurities of multiple hydrochloric acid, separately should
Method will further obtain high-grade synthetic rutile product, magnetic separation after needing to carry out in calcined sample, or will reduction
Magnetic separation before ilmenite concentrate carries out after roasting, although this method can be applicable in thickness ilmenite, operation is also needed by magnetic
Choosing.CN103910382A Chinese patent literature also discloses that a kind of method for preparing synthetic rutile, this method are through aoxidizing
Modified ilmenite carries out three stages acid leach and obtains synthetic rutile product after strong reduction, although the synthetic rutile product that this method obtains
Position it is relatively high, impurity content is relatively low, but calcium content is relatively high, as chloridising raw material can in chlorination process with
The impurity of chlorine reaction generation low melting point.
Domestic at present to prepare synthetic rutile using ilmenite, the requirement to raw material is high, operates relative complex, product dusting
Rate is high, or calcium content is relatively high in the synthetic rutile product of preparation, constrains industrialized production.Therefore the field is urgent
It needs a kind of technique and equipment is simple, easily operated, energy consumption is small, at low cost, environmental pollution is small, and can be with high calcium picrocrichtonite
Production high-grade, low impurity, the low-powder ratio Production of Artificial Rutile technique of raw material.
Summary of the invention
The object of the invention, which is that, overcomes above-mentioned deficiency, provides a kind of method for preparing synthetic rutile by ilmenite concentrate.This
Technical solution used by invention to solve above-mentioned technical problem is:
To achieve the above object, the present invention is to be achieved through the following technical solutions:
A method of synthetic rutile being prepared by ilmenite concentrate, it is characterised in that: described that synthetic rutile is prepared by ilmenite concentrate
Method the following steps are included:
S1, ilmenite classification, ilmenite is classified, and is chosen spare greater than 100 μm of ilmenite；
Oxidizing roasting: the ilmenite chosen in S1 step is carried out 0.5-2h oxidation by S2 under the conditions of 600 DEG C ~ 1000 DEG C of temperature
Roasting, obtains titanium oxide iron ore；
S3, reduction roasting: the ilmenite after the oxidation that S2 step is obtained carries out 1 ~ 2h reduction roasting at 800 DEG C ~ 1000 DEG C,
Obtain modified ilmenite；
S4, fluoride salt acidleach removal of impurities: the modified ilmenite that S3 step is obtained and the inorganic acid that concentration is 15 ~ 25wt% are equal
Even mixing then adds fluoride salt into reaction after reacting 3-5h under 95 DEG C of -105 DEG C of states, the reaction was continued 1-2h, then right
Reactant is filtered, washed and is dried, and synthetic rutile first product is obtained；
S5, calcining, carries out forging for 1 ~ 2h for the synthetic rutile first product that S4 step obtains under the conditions of 850 DEG C ~ 1000 DEG C of temperature
It burns, obtains the synthetic rutile.
Further, the remaining ilmenite for being greater than 160 mesh and less than 160 purposes after the described S1 step ilmenite classification
Ilmenite can be by being used as synthetic rutile raw material after being granulated or being directly used as the raw material of sulfate process titanium dioxide.
Further, ilmenite is made of following parts by weight substance in the step (1): 30 ~ 35wt% of TFe,
CaO1 ~ 2wt%, 3 ~ 6wt% of MgO, surplus TiO2.
Further, titanium oxide iron ore is crushed first before reduction roasting, makes titanium oxide in the step (3)
Iron ore maximum gauge is not more than 1 millimeter.
Further, the step (2) and step (5) be when being roasted and being calcined, and oxygen content is not in burner hearth
Lower than 21%, step (3) carry out the reducing agent selected when reduction sodium roasting be one of coal, coal gas, hydrogen, petroleum coke or
Any two kinds of person are mixed with arbitrary proportion.
Further, the step (2) and step (3), roasting apparatus when carrying out oxidizing roasting and reduction roasting are
Any one in rotary kiln or fluidized bed.
Further, the inorganic acid in the step S4 is any one in technical hydrochloric acid, sulfuric acid or titanium white waste acid
Or it any several is mixed with arbitrary proportion.
Further, the mixed proportion in the step S4 stated between modified ilmenite and inorganic acid are as follows: 1:3-8.
Further, in the step S4, acidleach is segmentation acidleach, first stage 3 ~ 5h of leaching time, second stage
Leaching time be 1 ~ 2h, total 4 ~ 7h of leaching time, wherein second stage acidleach addition fluoride salt and mine ratio be 0.005 ~
0.025:1。
Further, drying temperature is 100-120 DEG C in the step S4, and drying time is 1-2 hours, dry to make
Water content after industry is not more than 3%.
Compared with the prior art, the advantages of the present invention are as follows:
1, the characteristics of being directed to China Panxi Area, Sichuan Province ilmenite high contents of calcium and magnesium, using oxidizing roasting-reduction roasting-fluorine of the invention
Salt dissolving acidleach removal of impurities-calcining technique, can effectively improve the removal rate of impurity, promote the grade of synthetic rutile, obtain
It is able to satisfy the synthetic rutile of fluidizing chlorination requirement.
2, synthetic rutile preparation method of the invention uses the acidleach of fluoride salt normal pressure, not only increases going for impurity calcium and magnesium
Except rate, while pressurized acid leaching energy consumption is reduced, reduces product pulverization rate.
3, rutile preparation method equipment of the invention is simple, easily operated, energy consumption is small, at low cost, and industry may be implemented
Metaplasia produces.
Detailed description of the invention
Fig. 1 is the method for the present invention flow chart.
Specific embodiment
Embodiment 1
As shown in Figure 1, a kind of method for preparing synthetic rutile by ilmenite concentrate, it is characterised in that: described to be prepared by ilmenite concentrate
The method of synthetic rutile the following steps are included:
S1, ilmenite classification, ilmenite is classified, and is chosen spare greater than 100 μm of ilmenite；
Oxidizing roasting: the ilmenite chosen in S1 step is carried out under the conditions of 600 DEG C of temperature 2h oxidizing roasting, obtains oxygen by S2
Change ilmenite；
S3, reduction roasting: the ilmenite after the oxidation that S2 step is obtained carries out 1 ~ 2h reduction roasting at 800 DEG C, obtains modification
Ilmenite；
Fluoride salt acidleach removal of impurities: S4 the modified ilmenite that S3 step obtains uniformly is mixed with concentration for the inorganic acid of 15wt%
It closes, after reacting 5h under 95 DEG C of states, then adds fluoride salt into reaction, the reaction was continued 2h, then reactant is filtered,
Washing and drying, obtain synthetic rutile first product；
S5, calcining, the synthetic rutile first product that S4 step is obtained carry out the calcining of 2h under the conditions of 850 DEG C of temperature, obtain institute
The synthetic rutile stated.
In the present embodiment, the remaining ilmenite for being greater than 160 mesh and less than 160 mesh after the described S1 step ilmenite classification
Ilmenite can be by being used as synthetic rutile raw material after being granulated or being directly used as the raw material of sulfate process titanium dioxide.
In the present embodiment, ilmenite is made of following parts by weight substance in the step (1): TFe 3wt%,
CaO1wt%, MgO 3wt%, surplus TiO2.
In the present embodiment, titanium oxide iron ore is crushed first before reduction roasting in the step (3), makes to aoxidize
Ilmenite maximum gauge is not more than 1 millimeter.
In the present embodiment, the step (2) and step (5) are when being roasted and being calcined, oxygen 21% in burner hearth, step
Suddenly it is hydrogen that (3), which carry out the reducing agent selected when reduction sodium roasting,.
In the present embodiment, the step (2) and step (3) carry out roasting apparatus when oxidizing roasting and reduction roasting
For rotary kiln.
In the present embodiment, the inorganic acid in the step S4 is any one in technical hydrochloric acid, sulfuric acid or titanium white waste acid
Kind or any several mixed with arbitrary proportion.
Mixed proportion in the present embodiment, in the step S4 that states between modified ilmenite and inorganic acid are as follows: 1:3.
In the present embodiment, in the step S4, acidleach is segmentation acidleach, first stage leaching time 3h, second stage
Leaching time is 2h, and wherein the ratio of second stage acidleach addition fluoride salt and mine is 0.005:1.
In the present embodiment, drying temperature is 100 DEG C in the step S4, and drying time is 1 hour, after drying operation
Water content is not more than 3%.
Embodiment 2
As shown in Figure 1, a kind of method for preparing synthetic rutile by ilmenite concentrate, it is characterised in that: described to be prepared by ilmenite concentrate
The method of synthetic rutile the following steps are included:
S1, ilmenite classification, ilmenite is classified, and is chosen spare greater than 100 μm of ilmenite；
Oxidizing roasting: the ilmenite chosen in S1 step is carried out under the conditions of 1000 DEG C of temperature 0.5h oxidizing roasting, obtained by S2
To titanium oxide iron ore；
S3, reduction roasting: the ilmenite after the oxidation that S2 step is obtained carries out 1h reduction roasting at 1000 DEG C, obtains modified
Ilmenite；
Fluoride salt acidleach removal of impurities: S4 the modified ilmenite that S3 step obtains uniformly is mixed with concentration for the inorganic acid of 25wt%
It closes, after reacting 3h under 105 DEG C of states, then adds fluoride salt into reaction, then the reaction was continued 1h takes out reactant
Filter, washing and drying, obtain synthetic rutile first product；
S5, calcining, the synthetic rutile first product that S4 step is obtained carry out the calcining of 1h under the conditions of 1000 DEG C of temperature, obtain
The synthetic rutile.
In the present embodiment, the remaining ilmenite for being greater than 160 mesh and less than 160 mesh after the described S1 step ilmenite classification
Ilmenite can be by being used as synthetic rutile raw material after being granulated or being directly used as the raw material of sulfate process titanium dioxide.
In the present embodiment, ilmenite is made of following parts by weight substance in the step (1): TFe 35wt%,
CaO2wt%, MgO6wt%, surplus TiO2.
In the present embodiment, titanium oxide iron ore is crushed first before reduction roasting in the step (3), makes to aoxidize
Ilmenite maximum gauge is not more than 1 millimeter.
In the present embodiment, when being roasted and being calcined, oxygen content is in burner hearth for the step (2) and step (5)
90%, step (3) carries out the reducing agent petroleum coke selected when reduction sodium roasting.
In the present embodiment, the step (2) and step (3) carry out roasting apparatus when oxidizing roasting and reduction roasting
For fluidized bed.
In the present embodiment, the inorganic acid in the step S4 is sulfuric acid.
Mixed proportion in the present embodiment, in the step S4 that states between modified ilmenite and inorganic acid are as follows: 1:8.
In the present embodiment, in the step S4, acidleach is segmentation acidleach, first stage leaching time 5h, second stage
Leaching time is 2h, and wherein the ratio of second stage acidleach addition fluoride salt and mine is 0.025:1.
Further, drying temperature is 120 DEG C in the step S4, and drying time is 1 hour, containing after drying operation
Water is not more than 3%.
Embodiment 3
As shown in Figure 1, a kind of method for preparing synthetic rutile by ilmenite concentrate, it is characterised in that: described to be prepared by ilmenite concentrate
The method of synthetic rutile the following steps are included:
S1, ilmenite classification, ilmenite is classified, and is chosen spare greater than 100 μm of ilmenite；
Oxidizing roasting: the ilmenite chosen in S1 step is carried out under the conditions of 800 DEG C of temperature 1.5h oxidizing roasting, obtained by S2
Titanium oxide iron ore；
S3, reduction roasting: the ilmenite after the oxidation that S2 step is obtained carries out 1.5h reduction roasting at 900 DEG C, obtains modification
Ilmenite；
Fluoride salt acidleach removal of impurities: S4 the modified ilmenite that S3 step obtains uniformly is mixed with concentration for the inorganic acid of 20wt%
It closes, after reacting 4.5h under 100 DEG C of states, then adds fluoride salt into reaction, then the reaction was continued 1.5h carries out reactant
Suction filtration, washing and drying, obtain synthetic rutile first product；
S5, calcining, the synthetic rutile first product that S4 step is obtained carry out the calcining of 1.5h under the conditions of 900 DEG C of temperature, obtain
The synthetic rutile.
In the present embodiment, the remaining ilmenite for being greater than 160 mesh and less than 160 mesh after the described S1 step ilmenite classification
Ilmenite can be by being used as synthetic rutile raw material after being granulated or being directly used as the raw material of sulfate process titanium dioxide.
In the present embodiment, ilmenite is made of following parts by weight substance in the step (1): TFe 32wt%,
CaO1.5wt%, MgO4.5wt%, surplus TiO2.
In the present embodiment, titanium oxide iron ore is crushed first before reduction roasting in the step (3), makes to aoxidize
Ilmenite maximum gauge is not more than 1 millimeter.
In the present embodiment, when being roasted and being calcined, oxygen content is in burner hearth for the step (2) and step (5)
40, it is coal gas, hydrogen, with the mixing of 1:3 ratio that step (3), which carries out the reducing agent selected when reduction sodium roasting,.
In the present embodiment, the step (2) and step (3) carry out roasting apparatus when oxidizing roasting and reduction roasting
For rotary kiln.
In the present embodiment, the inorganic acid in the step S4 is technical hydrochloric acid, the mixing of sulfuric acid 1:1 ratio.
Mixed proportion in the present embodiment, in the step S4 that states between modified ilmenite and inorganic acid are as follows: 1:4.5.
In the present embodiment, in the step S4, acidleach is segmentation acidleach, first stage leaching time 4h, second stage
Leaching time is 1.5h, and wherein the ratio of second stage acidleach addition fluoride salt and mine is 0.015:1.
In the present embodiment, drying temperature is 110 DEG C in the step S4, and drying time is 1.3 hours, after drying operation
Water content be not more than 3%.
Embodiment 4
As shown in Figure 1, sieving to the Panzhihua mining area Pan Xi ilmenite ,+160 mesh ilmenite 500g is taken to be placed in Muffle furnace,
In 950 DEG C of 1 h of oxidation under air atmosphere, then reuses after coal base restores 1h at 850 DEG C, after removing coal by flotation, do
It is dry restored after ilmenite；Ilmenite is uniformly mixed with the hydrochloric acid that concentration is 20wt% by Stirring after taking 100g to restore,
Liquid-solid ratio is 5:1, under fluidized state after back flow reaction 3h, then add 0.1gNaF filtered after back flow reaction 1h again, water
It washes, 105 DEG C of dryings, 850 DEG C of calcinings obtain synthetic rutile.Ilmenite and the comparison of the synthetic rutile ingredient of preparation are as follows:
Mining area ilmenite and the synthetic rutile of preparation composition (wt%)
| Sample | TiO2 | TFe | CaO | MgO | Al2O3 | SiO2 | MnO |
| Ilmenite | 45.676 | 32.263 | 0.683 | 4.644 | 1.763 | 2.16 | 0.649 |
| Synthetic rutile | 93.363 | 2.163 | 0.162 | 0.269 | 0.579 | 3.594 | 0 |
Embodiment 5:
As shown in Figure 1, sieving to Pan Xi Hongge Deposit area ilmenite ,+160 mesh ilmenite 500g is taken to be placed in Muffle furnace, it is empty
In 850 DEG C of 1 h of oxidation under gas atmosphere, then reuse after 8-20 mesh coal restores 1h at 900 DEG C, after removing coal by screening,
Ilmenite after being restored；Ilmenite is uniformly mixed with the hydrochloric acid that concentration is 22wt% by Stirring after taking 100g to restore, liquid
Gu it under fluidized state after back flow reaction 4h, then adds 0.5gKF than being 5:1 and is filtered after back flow reaction 1h, washed again,
105 DEG C of dryings, 900 DEG C of calcinings obtain synthetic rutile.Ilmenite and the comparison of the synthetic rutile ingredient of preparation are as follows:
Mining area ilmenite and the synthetic rutile of preparation composition (wt%)
| Sample | TiO2 | TFe | CaO | MgO | Al2O3 | SiO2 | MnO |
| Ilmenite | 45.713 | 33.42 | 0.715 | 3.738 | 1.516 | 2.118 | 0.777 |
| Synthetic rutile | 94.395 | 0.876 | 0.189 | 0.302 | 0.267 | 2.984 | 0 |
In the present invention, calcium and magnesium in ilmenite can be effectively removed by being segmented acidleach by fluoride salt, and obtaining grade is 94% or so,
Calcium-magnesium content, in 7% or so synthetic rutile product, can be directly used as the raw material of fluidizing chlorination less than 1%, -200 mesh granularity.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (10)
1. a kind of method for preparing synthetic rutile by ilmenite concentrate, it is characterised in that: described to prepare artificial golden red by ilmenite concentrate
The method of stone the following steps are included:
S1, ilmenite classification, ilmenite is classified, and is chosen spare greater than 100 μm of ilmenite；(with claim 2 data
There are contradictions)
Oxidizing roasting: the ilmenite chosen in S1 step is carried out 0.5-2h oxidation by S2 under the conditions of 600 DEG C ~ 1000 DEG C of temperature
Roasting, obtains titanium oxide iron ore；
S3, reduction roasting: the ilmenite after the oxidation that S2 step is obtained carries out 1 ~ 2h reduction roasting at 800 DEG C ~ 1000 DEG C,
Obtain modified ilmenite；
S4, fluoride salt acidleach removal of impurities: the modified ilmenite that S3 step is obtained and the inorganic acid that concentration is 15 ~ 25wt% are equal
Even mixing then adds fluoride salt into reaction after reacting 3-5h under 95 DEG C of -105 DEG C of states, the reaction was continued 1-2h, then right
Reactant is filtered, washed and is dried, and synthetic rutile first product is obtained；
S5, calcining, carries out forging for 1 ~ 2h for the synthetic rutile first product that S4 step obtains under the conditions of 850 DEG C ~ 1000 DEG C of temperature
It burns, obtains the synthetic rutile.
2. a kind of method for preparing synthetic rutile by ilmenite concentrate according to claim 1, which is characterized in that the S1
Step ilmenite classification after the remaining ilmenite for being greater than 160 mesh and less than 160 mesh ilmenite can by be granulated after be used as
Synthetic rutile raw material or the raw material for being directly used as sulfate process titanium dioxide.
3. a kind of method for preparing synthetic rutile by ilmenite concentrate according to claim 1, which is characterized in that the step
Suddenly ilmenite is made of following parts by weight substance in (1): 30 ~ 35wt% of TFe, CaO1 ~ 2wt%, 3 ~ 6wt% of MgO, surplus are
TiO2 。
4. a kind of method for preparing synthetic rutile by ilmenite concentrate according to claim 1, which is characterized in that the step
Suddenly titanium oxide iron ore is crushed first before reduction roasting in (3), makes titanium oxide iron ore maximum gauge no more than 1 millimeter.
5. a kind of method for preparing synthetic rutile by ilmenite concentrate according to claim 1, which is characterized in that the step
Suddenly when being roasted and being calcined, oxygen content is not less than 21% in burner hearth, and step (3) carries out reduction sodium for (2) and step (5)
Changing the reducing agent selected when roasting is that one of coal, coal gas, hydrogen, petroleum coke or any two kinds are mixed with arbitrary proportion.
6. a kind of method for preparing synthetic rutile by ilmenite concentrate according to claim 1, which is characterized in that the step
Suddenly (2) and step (3), it is any one in rotary kiln or fluidized bed for carrying out roasting apparatus when oxidizing roasting and reduction roasting
Kind.
7. a kind of method for preparing synthetic rutile by ilmenite concentrate according to claim 1, which is characterized in that the step
Inorganic acid in rapid S4 be in technical hydrochloric acid, sulfuric acid or titanium white waste acid any one or any several mixed with arbitrary proportion.
8. a kind of method for preparing synthetic rutile by ilmenite concentrate according to claim 1, which is characterized in that the step
Mixed proportion in rapid S4 between modified ilmenite and inorganic acid are as follows: 1:3-8.
9. a kind of method for preparing synthetic rutile by ilmenite concentrate according to claim 1, which is characterized in that the step
In rapid S4, acidleach is segmentation acidleach, and first stage 3 ~ 5h of leaching time, second stage leaching time is 1 ~ 2h, total leaching time 4
~ 7h, wherein the ratio of second stage acidleach addition fluoride salt and mine is 0.005 ~ 0.025:1.
10. a kind of method for preparing synthetic rutile by ilmenite concentrate according to claim 1, which is characterized in that described
Drying temperature is 100-120 DEG C in step S4, and drying time is 1-2 hours, and the water content after drying operation is not more than 3%.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110468285A (en) * | 2019-09-11 | 2019-11-19 | 中南大学 | A kind of Ti-containing slag produces TiO2The method of powder |
| CN114438309A (en) * | 2022-01-18 | 2022-05-06 | 河南佰利联新材料有限公司 | Method for reducing impurities and upgrading titanium-rich material of low-quality titanium concentrate |
| CN114790510A (en) * | 2022-03-16 | 2022-07-26 | 中南大学 | Method for reducing high-calcium-magnesium type ilmenite concentrate to generate metallic iron and rutile |
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| CN101235441A (en) * | 2008-03-14 | 2008-08-06 | 大悟华龙吕王石材有限公司 | Acid picking method for extracting mineral from serpentine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110468285A (en) * | 2019-09-11 | 2019-11-19 | 中南大学 | A kind of Ti-containing slag produces TiO2The method of powder |
| CN114438309A (en) * | 2022-01-18 | 2022-05-06 | 河南佰利联新材料有限公司 | Method for reducing impurities and upgrading titanium-rich material of low-quality titanium concentrate |
| CN114790510A (en) * | 2022-03-16 | 2022-07-26 | 中南大学 | Method for reducing high-calcium-magnesium type ilmenite concentrate to generate metallic iron and rutile |
| CN114790510B (en) * | 2022-03-16 | 2023-07-21 | 中南大学 | Method for reducing high-calcium magnesium ilmenite concentrate to generate metallic iron and rutile |
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