CN105964391A - Method for obtaining ultrafine grained titanium concentrate - Google Patents
Method for obtaining ultrafine grained titanium concentrate Download PDFInfo
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- CN105964391A CN105964391A CN201610348552.0A CN201610348552A CN105964391A CN 105964391 A CN105964391 A CN 105964391A CN 201610348552 A CN201610348552 A CN 201610348552A CN 105964391 A CN105964391 A CN 105964391A
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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
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
-
- 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
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
Abstract
The invention discloses a method for obtaining ultrafine grained titanium concentrate. The method comprises the steps that 0.038 mm ilmenite materials serve as raw materials; horizontal ring magnetic separating, desliming by flotation, floating titanium roughing and floating titanium selection are sequentially conducted; and the ultrafine grained titanium concentrate with the TiO2 grade at 47%-48.5% is finally obtained, wherein the granularity of the ultrafine grained titanium concentrate is not larger than 0.038 mm. According to the method for obtaining the ultrafine grained titanium concentrate, ultrafine grained materials of 0.038mm grained ilmenite are effectively recycled, the ultrafine grained titanium concentrate with the TiO2 grade at 47%-48.5% is also obtained, and the recovery rate reaches 70% or above.
Description
Technical field
The invention belongs to mineral products field, particularly relate to a kind of method obtaining ultra-fine grade ilmenite concentrate.
Background technology
At present, the domestic ilmenite material for no more than 0.045mm grade, use high intensity magnetic separation and centrifuge to combine or outstanding choosing of shaking
Ore deposit carries out preliminary concentration, then rough concentrate uses floatation process recovery obtain ilmenite concentrate.Use the work that high intensity magnetic separation and centrifuge combine
During skill, centrifuge is batch (-type) ore dressing, and production process has a strong impact on production efficiency, and enters the thick titanium of flotation through what this technique obtained
Concentrate grade is only capable of reaching about 13%, and the response rate is the lowest, and during flotation, reagent consumption and ore dressing effect are affected；And hang
Ore-dressing technique of shaking belongs to film concentration, needs material to form thin distribution, therefore this work of one side on ore dressing sorting face as far as possible
Skill needs to take the biggest place, is allocated after ore pulp will directly affect to the outstanding ore dressing of shaking of multiple stage the most uniformly
The continuous ilmenite concentrate index obtained, distributes the concentrate product that irregular very difficult acquisition is qualified, industrial implementation effect it is difficult to ensure that.And from
Scheming and outstanding ore dressing of shaking all can not sort according to the magnetic contrast of ilmenite and non-ilmenite accurately, but according to material
Difference of specific gravity sorts, and during sorting, all granularity and patterns by material are affected, and cause non-ilmenite to be selected in concentrate,
Situation during ilmenite is brought into mine tailing simultaneously occurs, separating effect is undesirable.And it is secondary for current domestic broken grinding process
The grade superfine granule ilmenite Han-0.038mm, too thin due to its particle diameter especially, therefrom recovery Pd concentrate is the most difficult, not only divides
From DeGrain, cost is the highest, so ore deposit factory is substantially and is directly discharged into Tailings Dam, causes the waste of resource.
Therefore, for the technical problem from the recovery Pd concentrate difficulty of-0.038mm grade superfine granule ilmenite, one sorting is proposed
Satisfactory for result, simultaneously can obtain again TiO2High-grade, the method tool of ultra-fine grade ilmenite concentrate are of great significance.
Summary of the invention
The technical problem to be solved is, overcomes the deficiency and defect mentioned in background above technology, it is provided that a kind of acquisition
The method of ultra-fine grade ilmenite concentrate.
For solving above-mentioned technical problem, the technical scheme that the present invention proposes is:
A kind of method obtaining ultra-fine grade ilmenite concentrate, the method, with the ilmenite ores of-0.038mm as raw material, carries out flat ring successively
Magnetic separation, de slime flotation, that titanium is roughly selected and floated to floating titanium is selected, finally obtains TiO2Grade is the ultra-fine grade ilmenite concentrate of 47%～48.5%；
The granularity of wherein said ultra-fine grade ilmenite concentrate is not more than 0.038mm.
Above-mentioned method, it is preferred that the number of times of described flat ring magnetic separation is three times, wherein magnetic field during flat ring magnetic separation for the first time
Intensity is 10000～18000 Gausses；During flat ring magnetic separation for the second time, the intensity in magnetic field is 8000～12000 Gausses；Third time is flat
During ring magnetic separation, the intensity in magnetic field is 7000～11000 Gausses.Use three flat ring magnetic concentration workings, it is ensured that enter flotation material and obtain
TiO that must be higher2Grade, throwing as much as possible, except affecting the non-target minreal of floatation process, reduces substantial amounts of medicament simultaneously and disappears
The equipment of consumption and subsequent technique uses, to the most all having significant effect.
Above-mentioned method, it is preferred that every time during flat ring magnetic separation, magnetic separator uses the magnetic separator with tooth plate cartridge, institute
State tooth plate cartridge and there is the zigzag medium tooth plate in 0.8～1.1mm gap and space width is 1～1.5mm.
Above-mentioned method, it is preferred that the flushing water that the concentrate after flat ring magnetic separation uses hydraulic pressure to be 0.25～0.3MPa every time rinses,
The rinse water that mine tailing uses hydraulic pressure to be 0.15～0.20MPa is cleaned.The tooth plate size of magnetic separator in the present invention, concentrate washing pressure and
Mine tailing cleans hydraulic pressure and is both for the specific parameter that selected material selects, it is impossible to change.If tooth plate size if it occur that
Change, on the one hand can not obtain suitable crude titaniferous concentrate grade, and the magnetic field gradient produced can not obtain the higher response rate and refer to
Mark；If concentrate washing pressure does not reaches suitably value, concentrate unloads and the most totally will result in accumulation, blocking medium tooth plate；Mine tailing
Cleaning hydraulic pressure and do not reach requirement, non-ilmenite is then arranged unclean, affects concentrate grade.
Above-mentioned method, it is preferred that be sequentially added into diethyldithiocarbamate, sulphuric acid and No. 2 in the crude titaniferous concentrate after flat ring magnetic concentration
Oil, and stirring carries out de slime flotation after 2～3 minutes more respectively, and the mine-supplying quantity of wherein said diethyldithiocarbamate is 100～200g/t, sulfur
The mine-supplying quantity of acid is 200～1000g/t, and No. 2 oily mine-supplying quantities are 10～20g/t.
Above-mentioned method, it is preferred that add sulphuric acid, 600～1800g/t that mine-supplying quantity is 2000～3000g/t when described floating titanium is roughly selected
CMC (carboxymethyl cellulose) and the MOH of 2000～2400g/t, respectively stirring 5～10 minutes.
Above-mentioned method, it is preferred that described floating titanium is selected is divided into four sections, wherein first paragraph adds mine-supplying quantity is 200～400g/t
Sulphuric acid and 100～300g/t CMC, concentrated compactness 3～5 minutes；It is 100～300g/t sulphuric acid, 100～200g/t that second segment adds mine-supplying quantity
CMC, concentrated compactness 3～5 minutes；3rd section adds mine-supplying quantity is 50～200g/t sulphuric acid, 100～150g/t CMC, and concentration is stirred
Mix 3～5 minutes；4th section adds mine-supplying quantity is 50～200g/t sulphuric acid, stirs 3～5 minutes.The present invention selects four sections of floating titanium essences
Select technique, add mineral action time in floatation process, it can be ensured that the grade of final ilmenite concentrate and the response rate.
Above-mentioned method, it is preferred that the mine tailing merging of mine tailing and the selected generation of floating titanium that floating titanium is roughly selected generation carries out floating titanium and scans
Operation, floating titanium is scanned the concentrate described floating titanium of return of generation and is roughly selected in operation.
Above-mentioned method, it is preferred that it is 500～1000g/t sulphuric acid, 400～800g/t that described floating titanium adds mine-supplying quantity during scanning
CMC, 200～400g/t MOH, and stirring 5～10 minutes respectively.
Compared with prior art, it is an advantage of the current invention that:
(1) present invention is with-0.038mm ilmenite ores as raw material, by using three sections of flat ring magnetic separation to carry out tentatively in preferred version
Enrichment, and control the tooth plate size of magnetic separator, concentrate washing pressure and mine tailing cleaning hydraulic pressure, select to close for selected material characteristic
Suitable Parameter Conditions, by the selection to tooth plate size, it is ensured that obtain suitable crude titaniferous concentrate grade, and the enough magnetic produced
Field gradient guarantees to obtain higher response rate index；By the selection that concentrate washing pressure is suitably worth, guarantee concentrate as far as possible
Unload clean, do not cause concentrate to accumulate and blocking medium tooth plate；Cleaned the selection of hydraulic pressure value by mine tailing, reach to make non-ilmenite arrange
Except clean purpose, it is ensured that enter flotation crude titaniferous concentrate and obtain higher TiO2Grade, throwing as much as possible is except affecting flotation work
The non-target minreal of skill, the equipment reducing substantial amounts of reagent consumption and subsequent technique uses, and actively shows economical and environmentally friendly producing
The effect write, selects the titanium flotation qualified ilmenite concentrate of acquisition to provide guarantee for follow-up；
(2) the thin mud during the present invention uses flotation desliming abjection flat ring magnetic separation crude titaniferous concentrate simultaneously, adds diethyldithiocarbamate and controls final essence
The content of sulfur in ore deposit, and preferentially select the most floating mineral affecting final ilmenite concentrate grade；
(3) present invention obtains suitable acid-base value condition by adding sulphuric acid, adds No. 2 oil and makes to produce during flotation enough bubbles
The mineral making parent's gas phase are attached to air-bubble and float, and eliminate the interference of thin mud during titanium flotation operation, thus are final acquisition titanium essence
Ore deposit creates conditions；
(4) present invention eventually enters into the material process control flotation acid-base value that titanium is roughly selected, by the building-up effect of carboxymethyl cellulose,
Making fine-graded ilmenite agglomeration, under the effect of MOH collecting agent, be enriched with into rougher concentration, rougher concentration is equally
Principle under through repeatedly selecting the selected enrichment of titanium finally to obtain ilmenite concentrate, it is achieved thereby that can commercial Application be not more than 0.038mm
The recovery process of ilmenite material.
All in all, the ultra-fine grade material of the present invention p-0.038mm grade ilmenite effectively reclaims, and obtains
TiO2Grade is the ultra-fine grade ilmenite concentrate of 47%～48.5%, and the response rate reaches more than 70%.
Accompanying drawing explanation
Fig. 1 is the process chart obtaining ultra-fine grade ilmenite concentrate in the embodiment of the present invention 1.
Detailed description of the invention
For the ease of understanding the present invention, below in conjunction with Figure of description and preferred embodiment, invention herein is done more comprehensively, carefully
Cause ground to describe, but protection scope of the present invention is not limited to specific examples below.
Unless otherwise defined, with those skilled in the art, all technical term used hereinafter is generally understood that implication is identical.This
Technical term used in literary composition is intended merely to describe the purpose of specific embodiment, is not intended to limit the scope of the invention.
Unless otherwise specified, the various raw materials used in the present invention, reagent, instrument and equipment etc. all can be purchased by market
Can buy or can be prepared by existing method.
Embodiment 1:
The present embodiment obtains the method for ultra-fine grade ilmenite concentrate, with Pan Xi Fine Fraction Ilmenite as raw material, TiO in raw material2Grade
Being 8.45%, the material content of-0.038mm reaches 92.17%；This raw material is prepared as the technological process of ultra-fine grade ilmenite concentrate such as
Shown in Fig. 1, comprise the following steps:
(1) with above-mentioned Pan Xi Fine Fraction Ilmenite for raw material through 3 flat ring magnetic separation, wherein first time flat ring magnetic separation process
The intensity in middle magnetic field is 10000 Gausses；During flat ring magnetic separation for the second time, the intensity in magnetic field is 8000 Gausses；Flat ring magnetic for the third time
During choosing, the intensity in magnetic field is 7000 Gausses；During 3 flat ring magnetic separation, magnetic separator all uses the magnetic with tooth plate cartridge
Select machine (tooth plate cartridge has 0.8mm gap zigzag medium tooth plate, and space width is 1mm)；And after ensureing each magnetic separation
Concentrate washing pressure be 0.3MPa, mine tailing clean hydraulic pressure be 0.15～0.20MPa.
(2) throw useless at the mine tailing 1 after flat ring magnetic separation, the crude titaniferous concentrate after flat ring magnetic concentration is sequentially added into diethyldithiocarbamate,
Sulphuric acid and No. 2 oil, and stirring carries out de slime flotation after 3 minutes more respectively, and wherein the mine-supplying quantity of diethyldithiocarbamate is 200g/t, sulfur
The mine-supplying quantity of acid is 1000g/t, and No. 2 oily mine-supplying quantities are 20g/t.
(3) material after de slime flotation carries out floating titanium to roughly select, add when floating titanium is roughly selected sulphuric acid that mine-supplying quantity is 2000g/t,
The MOH of CMC and 2000g/t of 600g/t, respectively stirring 5 minutes.
(4) it is selected that the concentrate after roughly selecting floating titanium carries out four sections of floating titaniums, wherein first paragraph add mine-supplying quantity be 200g/t sulphuric acid and
100g/t CMC, concentrated compactness 3 minutes；It is 100g/t sulphuric acid, 100g/t CMC that second segment adds mine-supplying quantity, concentrated compactness 3
Minute；3rd section adds mine-supplying quantity is 50g/t sulphuric acid, 100g/t CMC, concentrated compactness 3 minutes；4th section of addition mine-supplying quantity is
50g/t sulphuric acid, stirs 3 minutes；Obtain TiO2Grade is the ultra-fine grade ilmenite concentrate of 47.97%, and the response rate reaches 73.02%.
Titanium floating in step (3) is roughly selected the mine tailing of the floating selected generation of titanium in the mine tailing of generation and step (4) merge and carry out floating titanium and sweep
Being elected to be industry, it is 500g/t sulphuric acid, 400g/t CMC, 200g/t MOH that floating titanium adds mine-supplying quantity during scanning, and stirs respectively
5 minutes；Floating titanium is scanned the concentrate of generation and is returned step (3) and put into floating titanium and roughly select in operation, and floating titanium is scanned the mine tailing 2 of generation and thrown
Useless.
Embodiment 2:
The present embodiment obtains the method for ultra-fine grade ilmenite concentrate, with Pan Xi Fine Fraction Ilmenite as raw material, TiO in raw material2Grade
Being 8.45%, the material content of-0.038mm reaches 92.17%；This raw material is prepared as the technological process of ultra-fine grade ilmenite concentrate such as
Shown in Fig. 1, comprise the following steps:
(1) with above-mentioned Pan Xi Fine Fraction Ilmenite for raw material through 3 flat ring magnetic separation, wherein first time flat ring magnetic separation process
The intensity in middle magnetic field is 12000 Gausses；During flat ring magnetic separation for the second time, the intensity in magnetic field is 10000 Gausses；Flat ring for the third time
During magnetic separation, the intensity in magnetic field is 8000 Gausses；During 3 flat ring magnetic separation, magnetic separator all uses has tooth plate cartridge
Magnetic separator (tooth plate cartridge has 0.9mm gap zigzag medium tooth plate, and space width is 1.2mm)；And ensure each magnetic
Concentrate washing pressure after choosing is 0.3MPa, and it is 0.15～0.20MPa that mine tailing cleans hydraulic pressure.
(2) throw useless at the mine tailing 1 after flat ring magnetic separation, the crude titaniferous concentrate after flat ring magnetic concentration is sequentially added into diethyldithiocarbamate,
Sulphuric acid and No. 2 oil, and stirring carries out de slime flotation after 2 minutes more respectively, and wherein the mine-supplying quantity of diethyldithiocarbamate is 180g/t, sulfur
The mine-supplying quantity of acid is 900g/t, and No. 2 oily mine-supplying quantities are 10g/t.
(3) material after de slime flotation carries out floating titanium to roughly select, add when floating titanium is roughly selected sulphuric acid that mine-supplying quantity is 2400g/t,
The MOH of CMC and 2200g/t of 1000g/t, respectively stirring 8 minutes.
(4) it is selected that the concentrate after roughly selecting floating titanium carries out four sections of floating titaniums, wherein first paragraph add mine-supplying quantity be 300g/t sulphuric acid and
200g/t CMC, concentrated compactness 5 minutes；It is 300g/t sulphuric acid, 200g/t CMC that second segment adds mine-supplying quantity, concentrated compactness 5
Minute；3rd section adds mine-supplying quantity is 200g/t sulphuric acid, 150g/t CMC, concentrated compactness 5 minutes；4th section adds mine-supplying quantity
For 200g/t sulphuric acid, stir 5 minutes；Obtain TiO2Grade is the ultra-fine grade ilmenite concentrate of 47.62%, and the response rate reaches 71.18%.
Titanium floating in step (3) is roughly selected the mine tailing of the floating selected generation of titanium in the mine tailing of generation and step (4) merge and carry out floating titanium and sweep
Being elected to be industry, it is 1000g/t sulphuric acid, 800g/t CMC, 400g/t MOH that floating titanium adds mine-supplying quantity during scanning, and stirs respectively
Mix 10 minutes；Floating titanium is scanned the concentrate of generation and is returned step (3) and put into floating titanium and roughly select in operation, and floating titanium scans the mine tailing of generation
2 throwings are useless.
Claims (9)
1. the method obtaining ultra-fine grade ilmenite concentrate, it is characterised in that the method with the ilmenite ores of-0.038mm as raw material,
Carry out flat ring magnetic separation, de slime flotation successively, that titanium is roughly selected and floated to floating titanium is selected, finally obtains TiO2Grade be 47%～48.5% super
Fine fraction ilmenite concentrate；The granularity of wherein said ultra-fine grade ilmenite concentrate is not more than 0.038mm.
2. the method for claim 1, it is characterised in that the number of times of described flat ring magnetic separation is three times, wherein the most flat
During ring magnetic separation, the intensity in magnetic field is 10000～18000 Gausses；During flat ring magnetic separation for the second time, the intensity in magnetic field is
8000～12000 Gausses；During flat ring magnetic separation for the third time, the intensity in magnetic field is 7000～11000 Gausses.
3. method as claimed in claim 2, it is characterised in that every time during flat ring magnetic separation, magnetic separator uses has tooth plate
The magnetic separator of cartridge, described tooth plate cartridge has the zigzag medium tooth plate in 0.8～1.1mm gap, and space width is
1～1.5mm.
4. method as claimed in claim 3, it is characterised in that the concentrate employing hydraulic pressure after flat ring magnetic separation is every time
The flushing water of 0.25～0.3MPa rinses, and the rinse water that mine tailing uses hydraulic pressure to be 0.15～0.20MPa is cleaned.
5. the method for claim 1, it is characterised in that be sequentially added in the crude titaniferous concentrate after flat ring magnetic concentration
Diethyldithiocarbamate, sulphuric acid and No. 2 oil, and respectively stirring 2～3 minutes after carry out de slime flotation again, wherein said diethyldithiocarbamate to ore deposit
Amount is 100～200g/t, and the mine-supplying quantity of sulphuric acid is 200～1000g/t, and No. 2 oily mine-supplying quantities are 10～20g/t.
6. the method for claim 1, it is characterised in that adding mine-supplying quantity when described floating titanium is roughly selected is 2000～3000g/t
The CMC and 2000～the MOH of 2400g/t of sulphuric acid, 600～1800g/t, stirring 5～10 minutes respectively.
7. the method for claim 1, it is characterised in that described floating titanium is selected is divided into four sections, wherein first paragraph add to
Ore deposit amount is sulphuric acid and the 100～300g/t CMC of 200～400g/t, concentrated compactness 3～5 minutes；Second segment adds mine-supplying quantity
100～300g/t sulphuric acid, 100～200g/t CMC, concentrated compactness 3～5 minutes；3rd section add mine-supplying quantity be 50～200g/t sulphuric acid,
100～150g/t CMC, concentrated compactness 3～5 minutes；4th section adds mine-supplying quantity is 50～200g/t sulphuric acid, stirs 3～5 minutes.
8. the method as according to any one of claim 1～7, it is characterised in that floating titanium is roughly selected mine tailing and the floating titanium essence of generation
The mine tailing merging that choosing produces carries out floating titanium and scans operation, and floating titanium is scanned the concentrate described floating titanium of return of generation and roughly selected in operation.
9. method as claimed in claim 8, it is characterised in that it is 500～1000g/t that described floating titanium adds mine-supplying quantity during scanning
Sulphuric acid, 400～800g/t CMC, 200～400g/t MOH, and stirring 5～10 minutes respectively.
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| CN110665640A (en) * | 2019-10-15 | 2020-01-10 | 江苏旌凯中科超导高技术有限公司 | Pre-enrichment and concentration process of ultrafine ferrotitanium ore material |
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| CN110665640A (en) * | 2019-10-15 | 2020-01-10 | 江苏旌凯中科超导高技术有限公司 | Pre-enrichment and concentration process of ultrafine ferrotitanium ore material |
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| CN105964391B (en) | 2018-09-25 |
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