CN107597413B - A kind of ilmenite beneficiation method - Google Patents
A kind of ilmenite beneficiation method Download PDFInfo
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- CN107597413B CN107597413B CN201710874223.4A CN201710874223A CN107597413B CN 107597413 B CN107597413 B CN 107597413B CN 201710874223 A CN201710874223 A CN 201710874223A CN 107597413 B CN107597413 B CN 107597413B
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Abstract
The present invention provides a kind of ilmenite beneficiation methods, comprising: sorts ferrotianium raw ore under the magnetic field 0.4~1.2T, obtains concentrate；Concentrate is subjected to one section of thickness grading by 0.35~0.45mm grade, one section of fine particle stage material is obtained and carries out obtaining iron ore concentrate and except iron tailings except iron；Two sections of fine particle stage materials and two sections of coarse fraction materials will be obtained except iron tailings is by 0.1~0.15mm grade, two sections of thickness gradings of progress；By two sections of gravity treatments of coarse fraction material, electric separations, electric separation ilmenite concentrate is obtained；Two sections of fine particle stage material flotation, obtain flotation ilmenite concentrate.The present invention removes iron by ferrotianium raw ore high-intensity magnetic separation, through first time classification processing, obtains iron ore concentrate；Classification is handled surplus material again, and coarse fraction material obtains ilmenite concentrate by gravity treatment, electric separation；Fine particle stage material flotation, obtains ilmenite concentrate；This method can obtain the higher ilmenite concentrate of the rate of recovery and grade.
Description
Technical field
The present invention relates to technical field of beneficiation more particularly to a kind of ilmenite beneficiation methods.
Background technique
China's vanadium and titanium resources are abundant, are mainly distributed on the ground such as Sichuan, Yunnan, Hebei, Guangdong and Guangxi Provinces and Heilungkiang, wherein climbing western ground
Area accounts for 90% of resource reserve or more.With the continuous development of domestic economy, the demand of ilmenite concentrate is gradually increased, and is caused
The increasing of titanium iron ore exploitation dynamics.Since titanium ore grade is low, mineral composition is complicated, and physical property is compared with its gangue mineral
Close, the mining processing industry in mining area in all parts of the country also has difference, therefore needs to carry out to the research of ilmenite mineral processing circuit more
Research.
It is general at present that titanomagnetite is recycled using the method for " stage grinding-staged magnetic separation ", by high magnetic pre-selection, again
Choosing, electric separation and flotation combined method recycle the ilmenite in iron selection tailings.Scene is to the resulting rough concentrate of high intensity magnetic separation titanium at present
By 0.18mm be classified → sieve it is enterprising enter ball milling → sieve under enter the technique of two sections of high-intensity magnetic separations and handled.In actual moving process
In, concentrate grade obtained by two sections strong magnetic averagely improves 2~3 percentage points compared with one section of high intensity magnetic mineral；Secondly single in+0.18mm grade
The preferable mineral of body degree of dissociation are also unreasonable to enter ball milling process, the rate of recovery and grade of the ilmenite concentrate made compared with
It is low.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of ilmenite beneficiation method, this method can obtain the rate of recovery
With the higher ilmenite concentrate of grade.
The present invention provides a kind of ilmenite beneficiation methods, comprising the following steps:
Ferrotianium raw ore is sorted under the magnetic field 0.4T~1.2T, obtains concentrate；
By the concentrate by 0.35mm~0.45mm grade carry out one section of thickness grading, one section of obtained fine particle stage material into
Row removes iron, obtains iron ore concentrate and except iron tailings；
Described two sections of thickness gradings will be carried out by 0.1mm~0.15mm grade except iron tailings, and obtain two sections of fine particle stage materials
With two sections of coarse fraction materials；
Two sections of coarse fraction materials are subjected to gravity treatment, electric separation, obtain electric separation ilmenite concentrate；Two sections of fine particle stage materials are floated
Choosing, obtains flotation ilmenite concentrate.
Preferably, TiO in the ferrotianium raw ore2Content be 5~15%.
Preferably, the magnetic field strength except iron is 1200~2400 oersteds.
Preferably, the voltage of the electric separation is 30~38KV；The revolving speed of the electric separation is 180rpm~200rpm.
Preferably, the gravity treatment is sorted using shaking table and/or spiral chute.
Preferably, the flotation uses sulfuric acid and MOH collecting agent.
Preferably, the mass ratio of the sulfuric acid and ferrotianium raw ore is 900~1100g:1000kg；
The mass ratio of the MOH collecting agent and ferrotianium raw ore is 1700~1900g:1000kg.
The present invention provides a kind of ilmenite beneficiation methods, comprising the following steps: by ferrotianium raw ore in 0.4T~1.2T magnetic
It sorts off field, obtains concentrate；The concentrate is subjected to one section of thickness grading by 0.35mm~0.45mm grade, one section obtained is thin
Grade material carries out obtaining iron ore concentrate and except iron tailings except iron；Described two will be carried out by 0.1mm~0.15mm grade except iron tailings
Section thickness grading, obtains two sections of fine particle stage materials and two sections of coarse fraction materials；Two sections of coarse fraction materials are subjected to gravity treatment, electricity
Choosing, obtains electric separation ilmenite concentrate；Two sections of fine particle stage materials carry out flotation, obtain flotation ilmenite concentrate.The present invention passes through ferrotianium raw ore
0.4T~1.2T high-intensity magnetic separation removes iron through first time classification processing, obtains iron ore concentrate；Classification is handled surplus material again, coarse grain
Grade material obtains ilmenite concentrate by gravity treatment, electric separation；Fine particle stage material flotation, obtains ilmenite concentrate；This method can obtain the rate of recovery
With the higher ilmenite concentrate of grade.Experimental result is indicated: the rate of recovery of electric separation ilmenite concentrate is 7.54%~9.89%, and grade is
46.87%~48.24%；The grade of flotation ilmenite concentrate is 47.01%~47.31%, and the rate of recovery is 28.61%~34.56%.
Detailed description of the invention
Fig. 1 is the ilmenite mineral processing circuit figure of the embodiment of the present invention 1.
Specific embodiment
The present invention provides a kind of ilmenite beneficiation methods, comprising the following steps:
Ferrotianium raw ore is sorted under the magnetic field 0.4T~1.2T, obtains concentrate；
By the concentrate by 0.35mm~0.45mm grade carry out one section of thickness grading, one section of obtained fine particle stage material into
Row removes iron, obtains iron ore concentrate and except iron tailings；
Described two sections of thickness gradings will be carried out by 0.1mm~0.15mm grade except iron tailings, and obtain two sections of fine particle stage materials
With two sections of coarse fraction materials；
Two sections of coarse fraction materials are subjected to gravity treatment, electric separation, obtain electric separation ilmenite concentrate；- two sections of fine particle stage materials carry out
Flotation obtains flotation ilmenite concentrate.
Ferrotianium raw ore through 0.4T~1.2T high-intensity magnetic separation, is removed iron through first time classification processing, obtains iron ore concentrate by the present invention；
Classification is handled surplus material again, and coarse fraction material obtains ilmenite concentrate by gravity treatment, electric separation；Fine particle stage material flotation, obtains titanium
Concentrate；This method can obtain the higher ilmenite concentrate of the rate of recovery and grade.
The present invention sorts ferrotianium raw ore under the magnetic field 0.4T~1.2T, obtains concentrate.TiO in the ferrotianium raw ore2's
Content is 5~15%.
After obtaining concentrate, the concentrate is carried out one section of thickness grading by 0.35mm~0.45mm grade by the present invention, is obtained
One section of fine particle stage material carry out obtaining iron ore concentrate and except iron tailings except iron.In the present invention, the concentrate preferably according to
0.40mm grade carries out one section of thickness grading, obtains one section of fine particle stage material of -0.40mm；Or one section is carried out according to 0.45mm grade
Thickness grading obtains one section of fine particle stage material of -0.45mm.The present invention preferably magnetic field strength be 1200~2400 oersteds under into
Row removes iron.
It obtains except after iron tailings, the present invention described will carry out two sections of thicknesses point by 0.1mm~0.15mm grade except iron tailings
Grade, obtains two sections of fine particle stage materials and two sections of coarse fraction materials.In the present invention, described except iron tailings is preferably according to 0.1mm
Grade carries out two sections of thickness gradings, obtains two sections of coarse fraction materials of+0.1mm and two sections of fine particle stage materials of -0.1mm；Or according to
0.154mm grade carries out two sections of thickness gradings, obtains two sections of coarse fraction materials of+0.154mm and two sections of fine fraction objects of -0.154mm
Material.
Two sections of coarse fraction materials are carried out gravity treatment, electric separation by the present invention, obtain electric separation ilmenite concentrate；Two sections of fine particle stage materials
Flotation is carried out, flotation ilmenite concentrate is obtained.In the present invention, the gravity treatment preferably uses shaking table and/or spiral chute to be sorted.
The voltage of the electric separation is preferably 30~38KV, more preferably 34~35KV；The revolving speed of the electric separation be preferably 180rpm~
200rpm, more preferably 180~185rpm.
In the present invention, two sections of fine particle stage materials preferably carry out desulfurization before flotation；Present invention preferably employs sulfuric acid,
Xanthate and 2# oil carry out desulfurization.
In the present invention, the flotation preferably uses sulfuric acid and MOH collecting agent.The mass ratio of the sulfuric acid and ferrotianium raw ore
Preferably 900~1100g:1000kg, more preferably 980~1030g:1000kg, most preferably 1000g:1000kg；It is described
The mass ratio of MOH collecting agent and ferrotianium raw ore is preferably 1700~1900g:1000kg, more preferably 1780~1820g:
1000kg, most preferably 1800g:1000kg.
The present invention provides a kind of ilmenite beneficiation methods, comprising the following steps: by ferrotianium raw ore in 0.4T~1.2T magnetic
It sorts off field, obtains concentrate；The concentrate is subjected to one section of thickness grading by 0.35mm~0.45mm grade, one section obtained is thin
Grade material carries out obtaining iron ore concentrate and except iron tailings except iron；Described two will be carried out by 0.1mm~0.15mm grade except iron tailings
Section thickness grading, obtains two sections of fine particle stage materials and two sections of coarse fraction materials；Two sections of coarse fraction materials are subjected to gravity treatment, electricity
Choosing, obtains electric separation ilmenite concentrate；Two sections of fine particle stage materials carry out flotation, obtain flotation ilmenite concentrate.The present invention passes through ferrotianium raw ore
0.4T~1.2T high-intensity magnetic separation removes iron through first time classification processing, obtains iron ore concentrate；Classification is handled surplus material again, coarse grain
Grade material obtains ilmenite concentrate by gravity treatment, electric separation；Fine particle stage material flotation, obtains ilmenite concentrate；This method can obtain the rate of recovery
With the higher ilmenite concentrate of grade.Experimental result is indicated: the rate of recovery of electric separation ilmenite concentrate is 7.54%~9.89%, and grade is
46.87%~48.24%；The grade of flotation ilmenite concentrate is 47.01%~47.31%, and the rate of recovery is 28.61%~34.56%.
In order to further illustrate the present invention, below with reference to embodiment to a kind of ilmenite beneficiation method provided by the invention into
Row describes in detail, but they cannot be interpreted as limiting the scope of the present invention.
The size distribution of the ferrotianium raw ore used in following embodiment, TiO2Content and amount of metal distributive law are shown in Table 1:
The size distribution of 1 ferrotianium raw ore of table, TiO2Content and amount of metal distributive law
As can be seen from Table 1: TiO2It is distributed in each grade, test specimen grade more crude product position is lower ,+0.4mm
Grade mineral TiO2Grade only has 4.69%, and Metal Distribution rate only has 2.82%.0.4mm~0.18mm grade mineral grade occupies
In, about 8.55% or so, Metal Distribution rate is 21.26%；The following grade TiO of -0.18mm2Grade is higher,
11.5% or more, Metal Distribution rate is 75.92%.
Embodiment 1
It is the ilmenite mineral processing circuit figure of the embodiment of the present invention 1 referring to Fig. 1, Fig. 1；
Ferrotianium raw ore is sorted under the magnetic field 0.4T~1.2T, obtains concentrate；
The concentrate is pressed into 0.40mm grade-classification, obtained -0.40mm grade material is carried out except iron, obtain iron ore concentrate and
Except iron tailings；
Will be described except iron tailings presses 0.1mm grade-classification, obtain+0.1mm grade material and -0.1mm grade material；
+ 0.1mm grade the material is carried out to carry out gravity treatment, the electric separation at revolving speed 180rpm, voltage 34KV using shaking table,
Obtain electric separation ilmenite concentrate；
- 0.1mm grade material is subjected to desulfurization under the conditions of sulfuric acid dosage 300g/t, xanthate 150g/t and 2# oil 60g/t；
The desulfurization tailing is subjected to flotation in the presence of sulfuric acid 1000g/t and MOH collecting agent 1800g/t, obtains flotation
Ilmenite concentrate.
The grade that can get electric separation ilmenite concentrate after 1 ore dressing of the embodiment of the present invention is TiO2=47.36%, the rate of recovery is
9.56%；The grade of flotation ilmenite concentrate is TiO2=47.01%, the rate of recovery 28.61%.
Embodiment 2
Ferrotianium raw ore is sorted under the magnetic field 0.4T~1.2T, obtains concentrate；
The concentrate is pressed into 0.45mm grade-classification, obtained -0.45mm grade material is carried out except iron, obtain iron ore concentrate and
Except iron tailings；
Will be described except iron tailings presses 0.1mm grade-classification, obtain+0.1mm grade material and -0.1mm grade material；
+ 0.1mm grade the material is carried out to carry out gravity treatment, the electric separation at revolving speed 180rpm, voltage 34KV using shaking table,
Obtain electric separation ilmenite concentrate；
- 0.1mm grade material is subjected to desulfurization under the conditions of sulfuric acid dosage 300g/t, xanthate 150g/t and 2# oil 60g/t；
The desulfurization tailing is subjected to flotation in the presence of sulfuric acid 1000g/t and MOH collecting agent 1800g/t, obtains flotation
Ilmenite concentrate.
The grade that can get electric separation ilmenite concentrate after 2 ore dressing of the embodiment of the present invention is TiO2=46.87%, the rate of recovery is
9.89%；The grade of flotation ilmenite concentrate is TiO2=47.24%, the rate of recovery 28.85%.
Embodiment 3
Ferrotianium raw ore is sorted under the magnetic field 0.4T~1.2T, obtains concentrate；
The concentrate is pressed into 0.40mm grade-classification, obtained -0.40mm grade material is carried out except iron, obtain iron ore concentrate and
Except iron tailings；
Will be described except iron tailings presses 0.154mm grade-classification, obtain+0.154mm grade material and -0.154mm grade object
Material；
+ 0.154mm grade the material is carried out to carry out gravity treatment, the electricity at revolving speed 180rpm, voltage 34KV using shaking table
Choosing, obtains electric separation ilmenite concentrate；
- 0.154mm grade material is taken off under the conditions of sulfuric acid dosage 300g/t, xanthate 150g/t and 2# oil 60g/t
Sulphur；
The desulfurization tailing is subjected to flotation in the presence of sulfuric acid 1000g/t and MOH collecting agent 1800g/t, obtains flotation
Ilmenite concentrate.
The grade that can get electric separation ilmenite concentrate after 3 ore dressing of the embodiment of the present invention is TiO2=48.24%, the rate of recovery is
7.54%；The grade of flotation ilmenite concentrate is TiO2=47.31%, the rate of recovery 34.56%.
As seen from the above embodiment, the present invention provides a kind of ilmenite beneficiation methods, comprising the following steps: by ferrotianium original
Mine sorts under the magnetic field 0.4T~1.2T, obtains concentrate；The concentrate is subjected to one section of thickness point by the grade of 0.35mm~0.45
Grade, one section of obtained fine particle stage material carry out obtaining iron ore concentrate and except iron tailings except iron；Will it is described except iron tailings by 0.1mm~
0.15mm grade carries out two sections of thickness gradings, obtains two sections of fine particle stage materials and two sections of coarse fraction materials；By two sections of coarse grain
Grade material carries out gravity treatment, electric separation, obtains electric separation ilmenite concentrate；Two sections of fine particle stage materials carry out flotation, obtain flotation ilmenite concentrate.This hair
It is bright that ferrotianium raw ore is obtained into iron ore concentrate through first time classification processing except iron through 0.4T~1.2T high-intensity magnetic separation；Surplus material is again
Classification processing, coarse fraction material obtain ilmenite concentrate by gravity treatment, electric separation；Fine particle stage material flotation, obtains ilmenite concentrate；This method energy
Enough obtain the rate of recovery and the higher ilmenite concentrate of grade.Experimental result is indicated: the rate of recovery of electric separation ilmenite concentrate be 7.54%~
9.89%, grade is 46.87%~48.24%；The grade of flotation ilmenite concentrate is 47.01%~47.31%, and the rate of recovery is
28.61%~34.56%.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (1)
1. a kind of ilmenite beneficiation method, comprising the following steps:
Ferrotianium raw ore is sorted under the magnetic field 0.4T~1.2T, obtains concentrate；TiO in the ferrotianium raw ore2Content be 5~
15%；
The concentrate is subjected to one section of thickness grading by 0.35mm~0.45mm grade, one section of obtained fine particle stage material is removed
Iron obtains iron ore concentrate and except iron tailings；The magnetic field strength except iron is 1200~2400 oersteds；
Described two sections of thickness gradings will be carried out by 0.1mm~0.15mm grade except iron tailings, and obtain two sections of fine particle stage materials and two
Section coarse fraction material；
Two sections of coarse fraction materials are subjected to gravity treatment, electric separation, obtain electric separation ilmenite concentrate；Two sections of fine particle stage materials carry out flotation,
Obtain flotation ilmenite concentrate；
The gravity treatment is sorted using shaking table and/or spiral chute；
The voltage of the electric separation is 30~38KV；The revolving speed of the electric separation is 180rpm~200rpm；
The flotation uses sulfuric acid and MOH collecting agent；The mass ratio of the sulfuric acid and ferrotianium raw ore is 900~1100g:
1000kg；
The mass ratio of the MOH collecting agent and ferrotianium raw ore is 1700~1900g:1000kg.
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109939817B (en) * | 2019-03-29 | 2021-04-16 | 中冶北方（大连）工程技术有限公司 | Process for preparing titanomagnetite |
| CN109954583B (en) * | 2019-04-30 | 2024-04-16 | 龙佰四川矿冶有限公司 | New process method for carrying out flotation on titanium concentrate by using Panzhihua and carrying out quality improvement and impurity reduction again |
| CN114226060B (en) * | 2021-12-14 | 2024-01-26 | 郑州中科新兴产业技术研究院 | Method for separating and recovering ilmenite, niobium-iron ore and cassiterite |
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| CN103736588A (en) * | 2014-01-16 | 2014-04-23 | 玉溪大红山矿业有限公司 | Efficient beneficiation method of comprehensively recovering low-grade vanadium titano-magnetite |
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