CN103706463B - A kind of titanium separation method - Google Patents
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Abstract
The invention provides a kind of titanium separation method.Described titanium separation method includes the titanium raw ore that selects after dissociating is carried out classification and every bulk processing to remove wherein granularity less than mineral aggregate at more than 1.0mm of 0.074mm and granularity, then by the mineral aggregate every thick gained successively through one section of deironing, one section of high intensity magnetic separation, cyclone classification, vibrosieve classification, two-stage nitration deironing, two-stage nitration high intensity magnetic separation, concentration also obtains ilmenite concentrate through flotation, wherein, treat that in the mineral aggregate of flotation, granularity is 10～20wt% at the mineral aggregate content of more than 0.18mm, granularity is the mineral aggregate content of 0.100～0.18mm is 20～30%, granularity is the mineral aggregate content of 0.074～0.100mm is 20～25wt%, the granularity mineral aggregate content less than 0.074mm is 30～40wt%, TiO2Content is 20～24wt%.The present invention can improve the upper size boundary of flotation recovery Pd iron mine to 0.18mm, effectively reduces the ore grinding time, reduces ore grinding cost, and ilmenite concentrate yield and the response rate are all improved.
Description
Technical field
The present invention relates to a kind of beneficiation method, more particularly, relate to a kind of method that can improve ilmenite flotation mineral aggregate upper size boundary.
Background technology
Panzhihua Mining Area is richly stored with vanadium titano-magnetite, vanadium titano-magnetite mine tailing after selecting ferrum is generally as selecting titanium material, in existing titanium selecting art, flotation step is typically considered at the mineral of 0.045～0.074mm, granularity to be carried out flotation, mineral recovering effect for+0.1mm grade (namely granularity is at more than 0.1mm) is poor, and is little to reclaim the mineral of+0.18mm grade (namely granularity is at more than 0.18mm).In ilmenite removal process, mog to be made to reach the granularity of suitable flotation, ore grinding cost can be significantly increased, in grinding process, inevitably produce some sludges simultaneously, be unfavorable for that the follow-up of mineral sorts.
Summary of the invention
For the deficiencies in the prior art, an object of the present invention is in that the one or more problems solving exist in above-mentioned prior art.
An object of the present invention is in that to provide a kind of method that the ilmenite concentrate recovery size upper limit is increased to 0.18mm grade.
To achieve these goals, the invention provides a kind of titanium separation method.Described titanium separation method comprises the following steps: dissociates and selects titanium raw ore, so that selecting the granularity ilmenite ores less than 0.25mm in titanium raw ore to separate with gangue mineral；Mineral aggregate after dissociating is carried out classification, obtains the granularity particulate mineral aggregate less than 0.074mm and the granularity coarse grain mineral aggregate at more than 0.074mm；Described coarse grain mineral aggregate is carried out every bulk processing, with remove wherein granularity at the mineral aggregate of more than 1.0mm；Mineral aggregate after thick is carried out one section of deironing and one section of high intensity magnetic separation, obtains high intensity magnetic mineral and mine tailing；Described high intensity magnetic mineral is carried out cyclone classification and vibrosieve classification, the granularity obtained by the cyclone classification mineral aggregate less than 0.18mm is delivered to vibrosieve and is removed, with further classification, granularity that wherein granularity obtains in the mineral aggregate of more than 0.18mm, cyclone classification and vibrosieve classification and return cyclone classification step after ore grinding processes at the mineral aggregate of more than 0.18mm and again sort；The granularity that vibrosieve classification the is obtained mineral aggregate less than 0.18mm obtains ilmenite concentrate through two-stage nitration deironing, two-stage nitration high intensity magnetic separation, concentration and flotation successively, wherein, treat that in the mineral aggregate of flotation, granularity is 10～20wt% at the mineral aggregate content of more than 0.18mm, granularity is the mineral aggregate content of 0.100～0.18mm is 20～30%, granularity is the mineral aggregate content of 0.074～0.100mm is 20～25wt%, the granularity mineral aggregate content less than 0.074mm is 30～40wt%, TiO2Content is 20～24wt%.
An embodiment according to titanium separation method of the present invention, in described mineral aggregate after bulk processing granularity at the mineral aggregate content of more than 1.0mm within 2wt%, granularity is at the mineral aggregate content 65～75wt% of more than 0.18mm, and the granularity mineral aggregate content less than 0.074mm is at below 15wt%.
An embodiment according to titanium separation method of the present invention, described ore grinding processes step and adopts ball mill ore grinding.
An embodiment according to titanium separation method of the present invention, described flotation step includes the floating sulfur and floating titanium step, the Unit erriger of floatation equipment employing XCF type flotation machine and KYF type flotation machine composition that are sequentially carried out, and floating titanium medicament includes MOH-2 collecting agent.
An embodiment according to titanium separation method of the present invention, the magnetic field intensity of described one section of high intensity magnetic separation and described two-stage nitration high intensity magnetic separation is 5500～6500 oersteds.
An embodiment according to titanium separation method of the present invention, the exciting current of described one section of high intensity magnetic separation and described two-stage nitration high intensity magnetic separation is 950～1050A.
An embodiment according to titanium separation method of the present invention, described to select titanium raw ore be vanadium titano-magnetite mine tailing after selecting ferrum, and its grade is 9.0～11.0wt%.
An embodiment according to titanium separation method of the present invention, described in dissociate and select titanium raw ore to include selecting titanium raw ore to carry out broken and ore grinding to process to described.An embodiment according to titanium separation method of the present invention, dissociates described in warp after selecting titanium raw ore step, and the liberation degree of minerals of the granularity mineral aggregate less than 0.25mm is more than 90%.
An embodiment according to titanium separation method of the present invention, described in treat that in the mineral aggregate of flotation, the liberation degree of minerals of the granularity mineral aggregate less than 0.074mm is more than 95%.
Compared with prior art, the beneficial effect comprise that the upper size boundary that can improve flotation recovery Pd iron mine is to 0.18mm, effectively reduces the ore grinding time, reduce ore grinding cost, and ilmenite concentrate yield and the response rate are all improved.
Accompanying drawing explanation
By the description carried out below in conjunction with accompanying drawing, the above and other purpose of the present invention and feature will become apparent, wherein:
Fig. 1 is the titanium selecting art flow chart of exemplary embodiment of the present.
Detailed description of the invention
Hereinafter, the titanium separation method according to the present invention will be described in detail in conjunction with accompanying drawing and exemplary embodiment.It should be noted that in this manual, unless otherwise indicated, involved percentage ratio refers both to percentage by weight (being designated as wt%)；+ Nmm grade represents that the granularity of mineral aggregate is not less than N millimeter, and-Nmm grade represents that the granularity of mineral aggregate is less than N millimeter, for instance, the granularity of+0.25mm grade mineral aggregate, hereinafter will not be described in great detail less than 0.25mm in the granularity of more than 0.25mm ,-0.25mm grade mineral aggregate.
Fig. 1 is the titanium selecting art flow chart of exemplary embodiment of the present.In the present embodiment, selecting titanium raw ore is vanadium iron magnetite mine tailing after selecting ferrum, head grade (TiO2Content) it is 9.0～11.0wt%, wherein main valuable mineral is ilmenite ores (abbreviation ilmenite), titanomagnetite, sulfide mineral and gangue mineral.Wherein, sulfide mineral includes magnetic iron ore (mainly), pyrite, Chalkopyrite etc.；Gangue mineral, based on titanaugite, is secondly plagioclase.
As it is shown in figure 1, the titanium selecting art of exemplary embodiment of the present comprises the following steps:
(1) dissociate raw ore, so that the abundant monomer dissociation of mineral therein, the raw ore that dissociates belongs to the ore dressing routine operation of this area, generally adopt " broken-ore grinding " technique, in the present embodiment, owing to selecting titanium raw ore to be the mine tailing obtained after iron selection technique, pass through in the iron selection technique stage and crush abundant for-0.25mm mineral monomer dissociation with ball-milling technology, the liberation degree of minerals of the mineral aggregate of granularity-0.25mm grade reaches more than 90wt%, therefore, titanium selecting art need not carry out monomer dissociation again.Wherein, liberation degree of minerals, also known as monomer separation degree, refers to that valuable mineral is dissociated into amount of monomer and the valuable mineral monomer percentage ratio plus the valuable mineral quantity sum with gangue mineral adhesion.
(2) raw ore after dissociating is carried out staged care, obtain the coarse grain mineral aggregate of+0.074mm grade and the particulate mineral aggregate of-0.074mm grade.Then the coarse grain mineral aggregate of described+0.074mm grade is carried out every bulk processing, to remove the mineral aggregate of wherein grain+1.0mm grade, part mineral grade is low, degree of dissociation is low for this of removal, without sorting value, and coarse granule mineral easily block the magnetizing mediums of strong magnetic stage magnetic separator, it is therefore desirable to remove in advance.Wherein, classifying equipoment can adopt lamella thickener.
In one embodiment, classified and in mineral aggregate after bulk processing, the mineral aggregate content of+1.0mm grade at the mineral aggregate content of mineral aggregate content 65～75wt% ,-0.074mm of below 2wt% ,+0.18mm at below 15wt%.It is that the flotation preparing and then obtaining suitable grain class distribution for follow-up one section of high intensity magnetic separation, two-stage nitration high intensity magnetic separation is to ore deposit that mineral aggregate particle size distribution after thick controls the reason in above-mentioned scope, the strong magnetomechanical of high gradient that one section of high intensity magnetic separation, two-stage nitration high intensity magnetic separation adopt is suitable for reclaiming coarse granule material, fine granular materials recovering effect is relatively poor, it is simple to improve the high intensity magnetic separation response rate.
Certainly, if the mineral aggregate ratio after thick does not control in above-mentioned scope, it can process, by follow-up grinding classification system, the grain class distribution ensureing flotation raw ore, but this can increase more production cost, such as+0.18mm grade is too much, can reduce+0.18mm grain size content by ball milling ore grinding, processes system until granularity is suitable through grinding classification system, but ball milling power consumption, steel ball consumption are very big, directly increase production cost.
(3) to being sequentially carried out one section of deironing and one section of high intensity magnetic separation every thick gained mineral aggregate, high intensity magnetic mineral and mine tailing are obtained.Wherein, the purpose of one section of high intensity magnetic separation be throw tail, remove wherein coarse granule, low-grade gangue mineral.
(4) high intensity magnetic mineral of one section of high intensity magnetic separation gained is sequentially carried out cyclone classification and vibrosieve classification.Wherein, cyclone adopts gravity classification, its classification efficiency only 40～50%, but its underflow density is up to more than 70wt%, can provide the ore pulp of high concentration for ball mill.Affected by cyclone classification efficiency, in actual production, cyclone overflow unavoidable detail folder is thick, the mineral aggregate of-0.18mm the grade obtained through cyclone classification still suffers from part+0.18mm grade mineral, therefore cyclone classification is carried out rough classification as first order classification, and the mineral aggregate of-0.18mm obtained by cyclone classification delivers to vibrosieve (such as, MICHAEL DRAKE lamination sieves) again carry out check screening, it is prevented that and the mineral of too much+0.18mm grade enter flotation step.Vibrosieve adopts sieved through sieve classification, according to screen size can accurately classification material, classification efficiency is more than 80%, as the check screening system that accurate Control granularity forms.The position sequencing of cyclone and vibrosieve can not be exchanged.
And the mineral aggregate of+0.18mm that vibrosieve and classifying cyclone obtain returns cyclone classification step after ore grinding (ball milling) processes and again sorts.Ore grinding processes the response rate that improve ilmenite, and while obtaining-0.18mm grade mineral aggregate, improve mineral aggregate liberation degree of minerals (liberation degree of minerals of-0.074mm grade mineral aggregate reaches more than 95%), the strongly magnetic minerals such as the titanomagnetite in ilmenite can be removed further, it is prevented that it affects flotation effect by follow-up two-stage nitration deironing operation；Grade can be obtained simultaneously after ore grinding and form rational ilmenite, prepare for follow-up flotation operation.
The grinding classification system that " cyclone+vibrosieve+ore grinding " composition is best.The position that grinding classification system is specifically located in titanium selecting art is that the technological process according to whole two sections of high intensity magnetic separation+deironing is arranged, it is necessarily placed between two sections of high intensity magnetic separation steps, this is because, one section of high intensity magnetic separation Main Function is to throw tail, remove wherein coarse granule, low-grade gangue mineral, if before grinding classification system is placed on one section of high intensity magnetic separation, mineral aggregate need ore grinding to process containing a large amount of gangue minerals, have a strong impact on production efficiency, therefore, after grinding classification system must necessarily be placed in one section of high intensity magnetic separation.And before grinding classification system is necessarily placed at two-stage nitration high intensity magnetic separation, because two-stage nitration high intensity magnetic separation can be controlled to the granularity in ore deposit by grinding classification system, and then control flotation original ore size composition, further monomer dissociation symbiosis ilmenite and titanomagnetite in grinding process simultaneously, the ferromagnetism titanomagnetite dissociating out after ore grinding processes through two-stage nitration deironing, prevent it from entering flotation operation and affect flotation, enter back into two-stage nitration high intensity magnetic separation after two-stage nitration deironing and improve ilmenite grade, upgrade suitable raw material for flotation.
(5)-0.18mm the mineral aggregate that vibrosieve classification is obtained carries out two-stage nitration deironing and two-stage nitration high intensity magnetic separation.Wherein, the purpose of two-stage nitration high intensity magnetic separation be improve ilmenite grade, for follow-up flotation operation provide grade suitable enter floating raw material.
(6) high intensity magnetic mineral that two-stage nitration high intensity magnetic separation obtains obtains treating the mineral aggregate (being also called flotation to ore deposit or flotation raw ore) of flotation after concentration.Wherein, the mineral aggregate content that mineral aggregate content is 10～20wt%, 0.100～0.18mm grade treating+0.18mm grade in the mineral aggregate of flotation is 20～30%, and the mineral aggregate content of 0.074～0.100mm grade is 20～25wt%, the mineral aggregate content of-0.074mm grade is 30～40wt%, TiO2Content is 20～24wt%.The parameter controlling flotation raw ore is able to bring up to flotation upper size boundary from limit from 0.074mm the premise of 0.18mm in above-mentioned scope, if each parameter will directly affect sorting index beyond respective range, affects the ilmenite response rate.This is because, not the ilmenite of any grade can carry out flotation recovery, enters that floating raw ore requirement liberation degree of minerals is high, epigranular is reasonable, therefore, leading portion grinding classification system is extremely important, and it is to improve degree of dissociation of mineral monomer, and controls the key of flotation particle size range.Ore grinding is excessively thick, and crude mineral granule not easily floats, and affects flotation recovering effect；Granularity is meticulous, fine-particle minerals argillization, is not suitable for flotation equally and reclaims.Only entering floating raw ore liberation degree of minerals, granularity and Grade Control within suitable scope, flotation upper size boundary could be improved, improve flotation recovery rate.
(7) flotation.Flotation operation selects the flow process of titanium after adopting first desulfurization, namely floating sulfur and floating titanium it are sequentially carried out, floatation equipment takes to be suitable for the floatation equipment that coarse fraction ilmenite (upper limit reaches 0.18mm) sorts, and floating titanium medicament adopts the floating titanium collecting agent having good collecting performance, selecting performance.In the present embodiment, floatation equipment adopts XCF type flotation machine and the Unit erriger of KYF type flotation machine composition, and wherein, XCF type flotation machine and KYF type flotation machine are existing equipment.KYF flotation device is similar with XCF flotator structure, is a difference in that XCF flotation device has blade midge and KYF flotation device does not have blade midge.Flotation will be carried out in this application in combination with being formed Unit erriger, wherein, constitute in flotation combined unit as the first groove (midge groove or suction tank) use at corresponding flotation operation section and KYF type flotation machine, KYF type flotation machine uses as the second groove and the 3rd groove (direct current groove), and what the first groove, the second groove and the 3rd united formation of groove were complete roughly select, selected and scan process section.The medicament that floating sulfur uses is xanthate and sulphuric acid, the medicament that floating titanium uses includes MOH-2 collecting agent, sulphuric acid, supplementary catching agent diesel oil and foaming agent 2# oil, above-mentioned floating agent is commercially available prod, wherein, MOH-2 collecting agent is that Hubei Jingjiang beneficiation reagent company limited produces, and it is applicable to recovery size and ranges for the ilmenite of 0.038～0.18mm.
In order to reach the optimization process effect of the present invention, the design parameter of high intensity magnetic separation has also been carried out specifically chosen by the present invention: in one embodiment, and the magnetic field intensity of one section of high intensity magnetic separation and two-stage nitration high intensity magnetic separation is 5500～6500 oersteds, and exciting current is 950～1050A.Above parameter is that select titanium original ore property and the titanium selecting art adopted according to the application is determined, size of current is directly proportional to magnitude of field intensity, changes magnetic separation strength by adjusting magnetic separator exciting current, in order to recovery Pd iron mine better.
In order to be more fully understood that the above-mentioned exemplary embodiment of the present invention, below in conjunction with concrete example, it is further described.
Example 1
Certain Xuan Tai factory selects titanium raw ore to be the mine tailing that ilmenite obtains after iron selection technique, pass through in the iron selection technique stage and crush abundant for-0.25mm mineral monomer dissociation with ball-milling technology, therefore, need not again carrying out monomer dissociation in titanium selecting art, its grade is 9.5wt%.Adopt technological process shown in Fig. 1 to selecting titanium raw ore to reclaim, wherein, classified and mineral aggregate after bulk processing grain class distribution situation is as shown in table 1, wherein, the mineral aggregate content that mineral aggregate content is 69.31wt% ,-0.074mm grade of+0.18mm grade is 13.46wt%, and the magnetic field intensity of one section of high intensity magnetic separation and two-stage nitration high intensity magnetic separation is 5500 oersteds, exciting current is 950A, and the floatation equipment adopted is XCF-16m3And KYF-16m3Unit erriger, the medicament that floating sulfur uses is xanthate and sulphuric acid, and floating titanium uses MOH-2 collecting agent, sulphuric acid, supplementary catching agent diesel oil and foaming agent 2# oil.To ore deposit, concentrate and tailings, floating titanium is carried out grade screen analysis, and result is as shown in table 2.
Table 1 is classified and the grain class distribution of mineral aggregate after bulk processing
| Grade (mm) | Content (wt%) |
| +0.4 | 36.14 |
| 0.25～0.4 | 2.97 |
| 0.18～0.25 | 30.20 4 --> |
| 0.10～0.18 | 10.30 |
| 0.074～0.10 | 6.93 |
| 0.045～0.074 | 5.64 |
| 0.038～0.045 | 2.18 |
| -0.038 | 5.64 |
| Amount to | 100.00 |
Table 2 floating product grade screen analysis result
As can be seen from Table 2, flotation has reached 19.64wt% to+0.18mm grain size content in ore deposit, in concentrate ,+0.18mm grain size content reaches 15.57wt%, + 0.18mm grain-level recovery reaches 82.13wt%, in concentrate ,+0.18mm grade reaches 48.06wt%, it was shown that+0.18mm ilmenite concentrate obtains effective recovery.Concentrate response rate index has reached 87.12wt%.And the relative flotation of ilmenite concentrate calculates according to the following formula to the concentrate yield in ore deposit:
The productivity of concentrate=(flotation is to ore deposit grade-tailings grade)/(concentrate grade-tailings grade) × 100%.
The relative flotation of ilmenite concentrate in this example is to the concentrate yield in ore deposit=(22.24-4.43)/(46.88-4.43) × 100%=41.95wt%.
Simultaneously, it can be seen that flotation to the granularity in ore deposit up and down by having brought up to 0.18mm.
Example 2
Certain Xuan Tai factory selects titanium raw ore to be the mine tailing that ilmenite obtains after iron selection technique, pass through in the iron selection technique stage and crush abundant for-0.25mm mineral monomer dissociation with ball-milling technology, therefore, need not again carrying out monomer dissociation in titanium selecting art, its grade is 10.5wt%.Adopt technological process shown in Fig. 1 to selecting titanium raw ore to reclaim, wherein, classified and mineral aggregate after bulk processing grain class distribution situation is as shown in table 3, wherein the mineral aggregate content of+0.18mm grade is 73.65wt%, the mineral aggregate content of-0.074mm grade is 11.57wt%, the magnetic field intensity of one section of high intensity magnetic separation and two-stage nitration high intensity magnetic separation is 6500 oersteds, and exciting current is 1050A, and the floatation equipment adopted is XCF-16m3And KYF-16m3Unit erriger, the medicament that floating sulfur uses is xanthate and sulphuric acid, and floating titanium uses MOH-2 collecting agent, sulphuric acid, supplementary catching agent diesel oil and foaming agent 2# oil.To ore deposit, concentrate and tailings, floating titanium is carried out grade screen analysis, and result is as shown in table 4.
Table 3 is classified and the grain class distribution of mineral aggregate after bulk processing
| Grade (mm) | Content (wt%) |
| +0.4 | 35.02 |
| 0.25～0.4 | 3.67 |
| 0.18～0.25 | 34.96 |
| 0.10～0.18 | 8.69 |
| 0.074～0.10 | 6.24 |
| 0.045～0.074 | 5.01 |
| 0.038～0.045 | 2.73 |
| -0.038 | 3.83 |
| Amount to | 100.00 |
Table 4 floating product grade screen analysis result
As can be drawn from Table 4, flotation has reached 1.27wt% to+0.18mm grain size content in ore deposit, and in concentrate ,+0.18mm grain size content reaches 8.65wt% ,+0.18mm grain-level recovery and reaches 84.66wt%, in concentrate ,+0.18mm grade reaches 48.15wt%, it was shown that+0.18mm ilmenite concentrate obtains effective recovery.Concentrate yield is 45.37wt%, and the concentrate response rate is 87.36wt%.
In sum, after adopting the method for the present invention, flotation is brought up to 0.18mm to the upper size boundary in ore deposit by original 0.74mm, reduce flotation to the ore grinding amount in ore deposit, namely ore grinding sand return amount greatly reduces, ore grinding cost also reduces accordingly, and the ilmenite of more 0.074mm～0.18mm obtains recovery, and ilmenite concentrate yield increases, the ilmenite concentrate response rate is also improved, remarkable in economical benefits.
Although describing the present invention already by conjunction with exemplary embodiment above, it would be clear to those skilled in the art that when the spirit and scope limited without departing from claim, can the exemplary embodiment of the present invention is carried out various amendment and change.
Claims (9)
1. a titanium separation method, it is characterised in that described titanium separation method comprises the following steps:
Dissociate and select titanium raw ore, so that selecting the granularity ilmenite ores less than 0.25mm in titanium raw ore to separate with gangue mineral；
Mineral aggregate after dissociating is carried out classification, obtains the granularity particulate mineral aggregate less than 0.074mm and the granularity coarse grain mineral aggregate at more than 0.074mm；
Described coarse grain mineral aggregate is carried out every bulk processing, with remove wherein granularity at the mineral aggregate of more than 1.0mm；
Mineral aggregate after thick is carried out one section of deironing and one section of high intensity magnetic separation, obtains high intensity magnetic mineral and mine tailing；
Described high intensity magnetic mineral is carried out cyclone classification and vibrosieve classification, the granularity obtained by the cyclone classification mineral aggregate less than 0.18mm is delivered to vibrosieve and is removed, with further classification, granularity that wherein granularity obtains in the mineral aggregate of more than 0.18mm, cyclone classification and vibrosieve classification and return cyclone classification step after ore grinding processes at the mineral aggregate of more than 0.18mm and again sort；
The granularity that vibrosieve classification the obtains mineral aggregate less than 0.18mm obtains ilmenite concentrate through two-stage nitration deironing, two-stage nitration high intensity magnetic separation, concentration and flotation successively, wherein, treat that in the mineral aggregate of flotation, granularity is 10～20wt% at the mineral aggregate content of more than 0.18mm, granularity is the mineral aggregate content of 0.100～0.18mm is 20～30wt%, granularity is the mineral aggregate content of 0.074～0.100mm is 20～25wt%, the granularity mineral aggregate content less than 0.074mm is 30～40wt%, TiO2Content is 20～24wt%；In the described mineral aggregate treating flotation, the liberation degree of minerals of the granularity mineral aggregate less than 0.074mm is more than 95%.
2. titanium separation method according to claim 1, it is characterized in that, in described mineral aggregate after bulk processing, granularity is at the mineral aggregate content of more than 1.0mm within 2wt%, and granularity is at the mineral aggregate content 65～75wt% of more than 0.18mm, and the granularity mineral aggregate content less than 0.074mm is at below 15wt%.
3. titanium separation method according to claim 1, it is characterised in that described ore grinding processes step and adopts ball mill ore grinding.
4. titanium separation method according to claim 1, it is characterised in that described flotation step includes the floating sulfur and floating titanium step, the Unit erriger of floatation equipment employing XCF type flotation machine and KYF type flotation machine composition that are sequentially carried out, and floating titanium medicament includes MOH-2 collecting agent.
5. titanium separation method according to claim 1, it is characterised in that the magnetic field intensity of described one section of high intensity magnetic separation and described two-stage nitration high intensity magnetic separation is 5500～6500 oersteds.
6. titanium separation method according to claim 5, it is characterised in that the exciting current of described one section of high intensity magnetic separation and described two-stage nitration high intensity magnetic separation is 950～1050A.
7. titanium separation method according to claim 1, it is characterised in that described to select titanium raw ore be vanadium titano-magnetite mine tailing after selecting ferrum, and its grade is 9.0～11.0wt%.
8. titanium separation method according to claim 1, it is characterised in that described in dissociate and select titanium raw ore to include selecting titanium raw ore to carry out broken and ore grinding to process to described.
9. titanium separation method according to claim 1, it is characterised in that dissociating described in warp after selecting titanium raw ore step, the liberation degree of minerals of the granularity mineral aggregate less than 0.25mm is more than 90%.
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