CN112718229A - Recovery method of micro-fine particle ilmenite - Google Patents
Recovery method of micro-fine particle ilmenite Download PDFInfo
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- CN112718229A CN112718229A CN202011313854.7A CN202011313854A CN112718229A CN 112718229 A CN112718229 A CN 112718229A CN 202011313854 A CN202011313854 A CN 202011313854A CN 112718229 A CN112718229 A CN 112718229A
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- concentrate
- tailings
- concentrated
- iron
- ilmenite
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
- B03B9/06—General arrangement of separating plant, e.g. flow sheets specially adapted for refuse
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
Abstract
According to the invention, the recovery method of the fine-particle ilmenite comprises the following steps: carrying out concentration treatment on the micro-fine ilmenite to obtain first concentrated ore pulp; carrying out weak magnetic iron removal on the concentrated ore pulp to obtain iron-removed tailings and fine iron ore; performing primary magnetic surface table roughing on the tailings without iron to obtain roughed concentrate and roughed tailings; carrying out secondary magnetic surface table scavenging on the roughed tailings to obtain scavenged concentrate; mixing and concentrating scavenging concentrate and roughing concentrate to obtain second concentrated ore pulp; and performing flotation desulfurization and flotation titanium separation on the second concentrated ore pulp to obtain titanium concentrate. By the recovery method, the recovery of the ultrafine-grained ilmenite with the grain size of-0.038 mm is greatly improved, the grade of tailings for flotation is improved, the quality of the titanium concentrate is ensured, and the recovery rate of the titanium concentrate is improved.
Description
Technical Field
The invention relates to the field of ilmenite beneficiation, in particular to a recovery method of fine-particle ilmenite.
Background
The resource reserves of the Panxi vanadium titano-magnetite are abundant, the resource reserves of the vanadium titano-magnetite reach 96 hundred million, wherein the resource reserves of the titanium (calculated by titanium dioxide) are 6.18 million, accounting for 95 percent of the whole country and 35 percent of the world, and the resource reserves of the vanadium titano-magnetite are the first in the world.
The process used for the mineral separation of the vanadium titano-magnetite in the current Panzhihua area is to carry out two-stage grinding and iron separation and then carry out titanium separation by taking iron separation tailings as raw materials. In the iron separation stage, because of the need of quality improvement of iron ore concentrate, fine grinding is needed, so that part of ilmenite is over ground in the iron separation stage, and a large amount of fine-particle ilmenite (-0.038mm) is generated.
Disclosure of Invention
In view of the foregoing, the inventors have recognized that there is a need for an improved method for the recovery of fine ilmenite, which enhances the capture of fine ilmenite, enables secondary recovery of resources, and achieves cost savings and increased efficiency.
This disclosure summarizes aspects of the embodiments and should not be used to limit the claims. Other embodiments are contemplated in accordance with the techniques described herein, as will be apparent to one of ordinary skill in the art upon study of the following figures and detailed description, and are intended to be included within the scope of the present application.
The invention provides a method for recovering ilmenite with fine particles, which can capture ilmenite fine particles with-0.038 mm size fraction and realize better recovery of the ilmenite.
According to the invention, the recovery method of the fine-particle ilmenite comprises the following steps:
carrying out concentration treatment on the micro-fine ilmenite to obtain first concentrated ore pulp;
carrying out weak magnetic iron removal on the concentrated ore pulp to obtain iron-removed tailings and fine iron ore;
performing primary magnetic surface table roughing on the tailings without iron to obtain roughed concentrate and roughed tailings;
carrying out secondary magnetic surface table scavenging on the roughed tailings to obtain scavenged concentrate;
mixing and concentrating scavenging concentrate and roughing concentrate to obtain second concentrated ore pulp;
and performing flotation desulfurization and flotation titanium separation on the second concentrated ore pulp to obtain titanium concentrate.
According to one embodiment of the invention, the mass concentration of the first concentrated pulp is 20% -30%.
According to one embodiment of the invention, the second concentrated pulp has a mass concentration of 45-55%.
According to one embodiment of the invention, the magnetic field intensity of the magnetic swing bed surface of the roughing magnetic surface is 3000-6000GS, and the gradient of the bed surface is 1.5 degrees.
According to one embodiment of the invention, the magnetic field intensity of the bed surface of the magnetic face shaking table for sweeping is 3000-.
According to one embodiment of the invention, the fine ilmenite fraction is-0.038 mm.
According to one embodiment of the invention, the second concentrated slurry is desulfurized by flotation to obtain desulfurized concentrate and desulfurized tailings.
According to an embodiment of the invention, the method further comprises the step of carrying out flotation titanium separation on the desulfurization tailings.
According to one embodiment of the invention, the first concentrated pulp has a mass concentration of 25.87%.
According to one embodiment of the invention the second concentrated pulp has a mass concentration of 50%.
Through the technical scheme, the recovery method of the fine-particle ilmenite has the following advantages:
by the recovery method, the recovery of the ultrafine-grained ilmenite with the grain size of-0.038 mm is greatly improved, the grade of tailings for flotation is improved, the quality of the titanium concentrate is ensured, and the recovery rate of the titanium concentrate is improved.
Drawings
For a better understanding of the invention, reference may be made to the embodiments illustrated in the following drawings. The components in the figures are not necessarily to scale, and related elements may be omitted, or in some cases the scale may have been exaggerated, in order to emphasize and clearly illustrate the novel features described herein. In addition, the system components may be arranged differently as is known in the art.
Figure 1 shows a flow diagram of a method for the recovery of fine-grained ilmenite according to the invention.
Detailed Description
Embodiments of the present disclosure are described below. However, it is to be understood that the disclosed embodiments are merely examples and that other embodiments may take various and alternative forms. The figures are not necessarily to scale; certain features may be exaggerated or minimized to show details of particular components. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the present invention. As one of ordinary skill in the art will appreciate, various features illustrated and described with reference to any one of the figures may be combined with features illustrated in one or more other figures to produce embodiments that are not explicitly illustrated or described. The combination of features shown provides a representative embodiment for a typical application. However, various combinations and modifications of the features consistent with the teachings of the present disclosure may be desirable for certain specific applications or implementations.
One or more embodiments of the present application will be described below with reference to the accompanying drawings. Flow diagrams illustrate processes performed by the system, it being understood that the flow diagrams need not be performed in the order in which they are performed, one or more steps may be omitted, one or more steps may be added, and one or more steps may be performed in the order or reversed, or even simultaneously in some embodiments.
According to the flowchart 100 of fig. 1, a method for manufacturing a high plasticity cold rolled steel sheet according to the present invention is as follows:
firstly, in step S101, the fine ilmenite is concentrated to obtain a first concentrated ore slurry, wherein the mass concentration of the first concentrated ore slurry is 20% to 30%.
Next, in step S102, the concentrated ore slurry is subjected to weak magnetic iron removal to obtain iron-removed tailings and fine iron ore.
Subsequently, in step 103, the tailings without iron are subjected to primary magnetic surface table roughing to obtain roughed concentrate and roughed tailings. In one or more embodiments, the magnetic field strength of the magnetic swing bed surface for roughing can be 3000-.
Next, in step 104, the rougher tailings are scavenged by a secondary magnetic surface shaker to obtain scavenged concentrate. In one or more embodiments, the magnetic swing bed surface magnetic field strength for the magnetic surface sweeping is 3000-.
The scavenger concentrate is then concentrated in step 105 with the rougher concentrate to obtain a second concentrated pulp. The mass concentration of the second concentrated ore pulp can be 45-55%.
Finally, in step 106, the second concentrated pulp is subjected to flotation desulfurization and flotation titanium separation to obtain titanium concentrate. And performing flotation and titanium separation on the desulfurized tailings to obtain titanium concentrate.
It is understood that the mass percentage of the concentrated pulp and the magnetic field strength and gradient have a significant effect on the taste and recovery of the finally obtained titanium concentrate, and the above discussion will be illustrated by examples and comparative examples.
Example 1
First, in step S101, the fine ilmenite with a concentration of 10.23% and a grade of 10.32% is concentrated to obtain a pulp with a pulp concentration of 25.87%.
Next, in step S102, the concentrated ore pulp is subjected to iron removal by a weak magnetic machine, so as to obtain iron-removed tailings.
Subsequently, in step S103, a magnetic surface shaking table is used to perform a first roughing on the tailings without iron to obtain roughed concentrate and roughed tailings, wherein the magnetic field intensity of a bed surface of the magnetic surface shaking table is 4000Gs, and the gradient of the bed surface is 1.5 degrees.
Next, in step S104, the rougher tailings are scavenged by using a magnetic surface concentrator (magnetic field intensity of the bed surface is 3500Gs), so as to obtain scavenged concentrate.
Then, in step S105, the scavenged concentrate and the roughed concentrate are mixed and concentrated to obtain an ore pulp with an ore pulp concentration of 50%, and the concentrated ore pulp is desulfurized by using xanthate to obtain desulfurized concentrate and desulfurized tailings.
Finally, in step S106, titanium separation is performed on the desulfurized tailings to obtain titanium concentrate with a grade of 46.56% and a recovery rate of 31.28%.
Example 2
First, in step S101, the 9.73% grade fine ilmenite with a concentration is concentrated to obtain 26.54% pulp.
Next, in step S102, the concentrated ore pulp is subjected to iron removal by a weak magnetic machine, so as to obtain iron-removed tailings.
Subsequently, in step S103, a magnetic surface shaking table is used to perform a first roughing on the tailings without iron to obtain roughed concentrate and roughed tailings, wherein the magnetic field intensity of a bed surface of the magnetic surface shaking table is 4000Gs, and the gradient of the bed surface is 1.5 degrees.
Next, in step S104, the rougher tailings are scavenged by using a magnetic surface concentrator (magnetic field intensity of the bed surface is 3500Gs), so as to obtain scavenged concentrate.
Then, in step S105, the scavenged concentrate and the roughed concentrate are mixed and concentrated to obtain an ore pulp with an ore pulp concentration of 54%, and the concentrated ore pulp is desulfurized by using xanthate to obtain desulfurized concentrate and desulfurized tailings.
Finally, in step S106, titanium separation is performed on the desulfurized tailings to obtain titanium concentrate with a grade of 47.04% and a recovery rate of 32.33%.
Comparative example 1
And removing iron from the ultrafine ilmenite with the granularity of not more than 0.038mm to obtain iron-removed tailings and secondary iron concentrate.
And then, carrying out primary strong magnetic separation on the obtained iron-removed tailings to obtain strong magnetic concentrate and final tailings. And then, reselecting the obtained strong magnetic concentrate by using a centrifugal machine to obtain reselected concentrate and final tailings.
And carrying out secondary strong magnetic separation on the obtained gravity concentrate.
And performing flotation on the strong magnetic concentrate obtained by the second-stage strong magnetic to obtain final titanium concentrate, wherein the flotation step comprises the step of sulfur flotation and titanium flotation in sequence to obtain the titanium concentrate with the grade of 40.13% and the recovery rate of 25.43%.
Compared with the existing recovery method in the comparative example, the technical scheme of the invention greatly improves the recovery of the ultrafine grained ilmenite with the grain size of-0.038 mm, improves the grade of tailings for flotation, ensures the quality of the titanium concentrate and improves the recovery rate of the titanium concentrate.
The features mentioned above in relation to different embodiments may be combined with each other to form further embodiments within the scope of the invention, where technically feasible.
The above-described embodiments are possible examples of the embodiments of the present invention and are given only for clear understanding of the principles of the present invention by those skilled in the art. Those skilled in the art will understand that: the above discussion of any embodiment is merely exemplary in nature and is not intended to intimate that the scope of the disclosure, including the claims, of embodiments of the invention is limited to those examples; features from the above embodiments or from different embodiments can also be combined with each other under the general idea of the invention and produce many other variations of the different aspects of the embodiments of the invention as described above, which are not provided in the detailed description for the sake of brevity. Therefore, any omissions, modifications, substitutions, improvements and the like that may be made without departing from the spirit and principles of the embodiments of the invention are intended to be included within the scope of the claims.
Claims (10)
1. A method for recovering fine-particle ilmenite is characterized by comprising the following steps:
carrying out concentration treatment on the micro-fine ilmenite to obtain first concentrated ore pulp;
removing iron from the concentrated ore pulp by weak magnetism to obtain iron-removed tailings and fine iron ore;
performing primary magnetic surface table roughing on the tailings without iron to obtain roughed concentrate and roughed tailings;
carrying out secondary magnetic surface table scavenging on the roughed tailings to obtain scavenged concentrate;
mixing and concentrating the scavenging concentrate and the roughing concentrate to obtain second concentrated ore pulp;
and performing flotation desulfurization and flotation titanium separation on the second concentrated ore pulp to obtain titanium concentrate.
2. The recovery process according to claim 1, characterized in that the mass concentration of the first concentrated pulp is 20-30%.
3. The recovery process according to claim 1, characterized in that the mass concentration of the second concentrated pulp is 45% -55%.
4. The recycling method as claimed in claim 1, wherein the magnetic swing bed has a magnetic field intensity of 3000 and 6000GS and a gradient of 1.5 degrees.
5. The recycling method as claimed in claim 1, wherein the magnetic swing bed has a magnetic field intensity of 3000 and 6000GS, and a gradient of 1.0 degree.
6. A recovery process according to claim 1, characterised in that the fine ilmenite fraction is-0.038 mm.
7. The recovery method according to claim 1, wherein the second concentrated slurry is desulfurized by flotation to obtain desulfurized concentrate and desulfurized tailings.
8. The recovery method of claim 7, further comprising subjecting the desulfurized tailings to flotation for titanium.
9. The recovery process of claim 2 wherein the first concentrated pulp has a mass concentration of 25.87%.
10. The recovery process according to claim 3, characterized in that the mass concentration of the second concentrated pulp is 50%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011313854.7A CN112718229A (en) | 2020-11-20 | 2020-11-20 | Recovery method of micro-fine particle ilmenite |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011313854.7A CN112718229A (en) | 2020-11-20 | 2020-11-20 | Recovery method of micro-fine particle ilmenite |
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| CN112718229A true CN112718229A (en) | 2021-04-30 |
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| CN202011313854.7A Pending CN112718229A (en) | 2020-11-20 | 2020-11-20 | Recovery method of micro-fine particle ilmenite |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113941457A (en) * | 2021-09-06 | 2022-01-18 | 长沙矿冶研究院有限责任公司 | Method for obtaining ultrafine-grained titanium concentrate |
Citations (6)
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| US4565624A (en) * | 1983-04-04 | 1986-01-21 | Edward Martinez | Gravity--magnetic ore separators |
| CN2589078Y (en) * | 2002-11-18 | 2003-12-03 | 李宾 | Pulsation type magnetic shaker |
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| CN104190528A (en) * | 2014-08-29 | 2014-12-10 | 攀钢集团矿业有限公司 | Method for recycling ultra-fine fraction titanic iron ore and production method for titanium concentrate |
| CN108525846A (en) * | 2018-06-28 | 2018-09-14 | 攀钢集团矿业有限公司 | A kind of method and system of the low-grade Fine Fraction Ilmenite of recycling |
| CN110369129A (en) * | 2019-07-15 | 2019-10-25 | 广州粤有研矿物资源科技有限公司 | A kind of magnetic plant and -38 μm of micro-size fraction ferrotianium ore recovery methods |
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2020
- 2020-11-20 CN CN202011313854.7A patent/CN112718229A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4565624A (en) * | 1983-04-04 | 1986-01-21 | Edward Martinez | Gravity--magnetic ore separators |
| CN2589078Y (en) * | 2002-11-18 | 2003-12-03 | 李宾 | Pulsation type magnetic shaker |
| CN101062487A (en) * | 2006-04-26 | 2007-10-31 | 中国地质科学院郑州矿产综合利用研究所 | Magnetic shaking table |
| CN104190528A (en) * | 2014-08-29 | 2014-12-10 | 攀钢集团矿业有限公司 | Method for recycling ultra-fine fraction titanic iron ore and production method for titanium concentrate |
| CN108525846A (en) * | 2018-06-28 | 2018-09-14 | 攀钢集团矿业有限公司 | A kind of method and system of the low-grade Fine Fraction Ilmenite of recycling |
| CN110369129A (en) * | 2019-07-15 | 2019-10-25 | 广州粤有研矿物资源科技有限公司 | A kind of magnetic plant and -38 μm of micro-size fraction ferrotianium ore recovery methods |
Non-Patent Citations (2)
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| 张松等: ""微细粒钛铁矿选矿技术研究进展"", 《矿产保护与利用》 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113941457A (en) * | 2021-09-06 | 2022-01-18 | 长沙矿冶研究院有限责任公司 | Method for obtaining ultrafine-grained titanium concentrate |
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