CN107876205A - A kind of beneficiation method that ilmenite is reclaimed from low-grade titaniferous iron tailings - Google Patents
A kind of beneficiation method that ilmenite is reclaimed from low-grade titaniferous iron tailings Download PDFInfo
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- CN107876205A CN107876205A CN201711114764.3A CN201711114764A CN107876205A CN 107876205 A CN107876205 A CN 107876205A CN 201711114764 A CN201711114764 A CN 201711114764A CN 107876205 A CN107876205 A CN 107876205A
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- flotation
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- magnetic separation
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 106
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 53
- YDZQQRWRVYGNER-UHFFFAOYSA-N iron;titanium;trihydrate Chemical compound O.O.O.[Ti].[Fe] YDZQQRWRVYGNER-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000007885 magnetic separation Methods 0.000 claims abstract description 48
- 238000005188 flotation Methods 0.000 claims abstract description 43
- 239000010936 titanium Substances 0.000 claims abstract description 26
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 24
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000012141 concentrate Substances 0.000 claims abstract description 16
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 34
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 19
- 230000006698 induction Effects 0.000 claims description 8
- 239000006148 magnetic separator Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 235000006408 oxalic acid Nutrition 0.000 claims description 6
- 238000013329 compounding Methods 0.000 claims description 4
- 230000005389 magnetism Effects 0.000 claims description 2
- 238000004064 recycling Methods 0.000 abstract description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 12
- 239000011707 mineral Substances 0.000 description 12
- 238000011084 recovery Methods 0.000 description 12
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 7
- 238000000926 separation method Methods 0.000 description 7
- 238000004458 analytical method Methods 0.000 description 5
- 239000003814 drug Substances 0.000 description 5
- 238000011160 research Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 229940079593 drug Drugs 0.000 description 3
- 238000007667 floating Methods 0.000 description 3
- 239000004408 titanium dioxide Substances 0.000 description 3
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 2
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 2
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 2
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 2
- 239000005642 Oleic acid Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 2
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 2
- 239000000344 soap Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 235000019082 Osmanthus Nutrition 0.000 description 1
- 241000333181 Osmanthus Species 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000010977 jade Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
- B03C1/002—High gradient 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
- B03D1/001—Flotation agents
- B03D1/018—Mixtures of inorganic and organic compounds
-
- 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
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/02—Collectors
-
- 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
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/06—Depressants
-
- 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
- B03D2203/00—Specified materials treated by the flotation agents; Specified applications
- B03D2203/02—Ores
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a kind of beneficiation method that ilmenite is reclaimed from low-grade titaniferous iron tailings, to TiO2Grade first carries out one section of high intensity magnetic separation in 7%~9.5% low-grade iron selection tailings；One section of high intensity magnetic separation concentrate of acquisition is fed into-two sections of high intensity magnetic separations of ore grinding-low intensity magnetic separation iron removaling operation, the mine tailing after low intensity magnetic separation iron removaling gives ore deposit as titanium flotation operation；Titanium flotation operation using one thick four it is single-minded sweep, the direct flotation flow that chats sequentially returns, flotation of dishing out scans mine tailing, obtains TiO2The ilmenite concentrate of grade >=46%, it is achieved thereby that the effective recycling of titanium resource.This method has the advantages that energy-saving, strong adaptability, good in economic efficiency, be applicable when can reclaim ilmenite in similar titaniferous iron tailings.
Description
Technical field
The invention belongs to resource of tailings field of comprehensive utilization, and in particular to one kind reclaims from titanium-containing magnet ore deposit iron selection tailings
The beneficiation method of ilmenite, especially suitable for from TiO2Ilmenite is reclaimed in the titaniferous iron tailings of grade 7%~9.5%, can be obtained
TiO2The ilmenite concentrate of grade more than 46.00%.
Background technology
Titanium resource has quite abundant reserves in China, accounts for half of world's gross reserves or so, therein most absolutely
Number exists in the form of ilmenite.The ilmenite in China is distributed mainly on river, the province of Ji two, also has in provinces and regions such as fine jade, Guangdong, osmanthus, Yunnan
Distribution.
With the development of economy and society, China's items infrastructure is increasing to the demand of titanium resource, high-quality titanium money
Source shortage turns into undisputable fact, and to meet the needs of domestic Ti industry, China needs import millions of tons titanium ore every year.By
In the restriction of past technique of preparing, a considerable amount of titaniferous iron tailings are remained in Southwestern China area, if can be by titanium therein
Recycled, for alleviating the short significant of the high-quality titanium resource in China.
Usual granularity of titaniferous iron tailings is fine, useful element content is low, mineral composition is complicated for such, therefore ore dressing recovery is difficult
Degree is very big.Although there is research unit to carry out correlative study, also achieve some important achievements in research, remain it is following not
Foot：
(1) configuration mode of low intensity magnetic separation and high intensity magnetic separation is single.In the ore dressing process of routine, low intensity magnetic separation operation is usually provided at
Before high intensity magnetic separation operation, primarily to pre-dressing goes out strongly magnetic mineral, strong magnetomechanical is avoided to be blocked.The configuration mode for
Strongly magnetic mineral content is suitable when more, but for titaniferous iron tailings, because its strongly magnetic mineral content is very low, if will enter
Weak magnetic separation equipment quantity will be significantly increased before being located at high intensity magnetic separation in low intensity magnetic separation iron removaling operation before floating, cause cost of investment mistake
It is high.Therefore, it is necessary to the configuration mode is optimized.
(2) magnetic separation-gravity separation technology beneficiating efficiency is low.Recovery of the magnetic separation-gravity separation technology for coarse fraction ilmenite is that have
Effect, but often granularity is fine for titaniferous iron tailings, and impurity component is complicated, is difficult to efficiently return using magnetic separation-gravity separation technology
Receive.It is therefore desirable to study using efficient magnetic separation-floatation process.
(3) the conventional ilmenite collecting agent efficiency of separation is not high.Floatation is the effective of recovery fine fraction low-grade ilmenite
Method, and the key for improving flotation effect is to use efficient collecting agent.Oleic acid and its soaps are that the most frequently used ilmenite is caught
Agent is received, technology maturation is reliable, can improve its collecting performance by heating up, increasing the mode such as oxygen content or addition emulsifying agent, lack
Point is that amount of consumption of drugs is larger, poor selectivity；Although oxidized paraffin wax soap source is wide, cost is low, can replacing oleic acid, needs emulsification to carry under normal temperature
Its collecting effect is risen, but concentrate grade is low, index stability is poor.Therefore, the efficient separation of ilmenite is realized, it is necessary to which research is adopted
With new and effective collecting agent.
In order to preferably reclaim the ilmenite in iron tailings,《Modern Mineral》8th periodical in 2011 step on " in iron selection tailings
Reclaim the experimental study of ilmenite " text, pass through the main character to Chongqing Xichang Mining Co., Ltd.'s ore dressing plant iron selection tailings
Studied, the problem of analyzing the former technological process of iron selection tailings recovery Pd and its exist, and with reference to the strong of other Xuan Tai factories
Magnetic-floatation process carries out the situation of commerical test, to the suitable background lectromagnetism field of high intensity magnetic separation and new selects titanium collecting agent R2 etc. to carry out
Research, the production practices of a period of time show, the ilmenite in the ore deposit iron selection tailings is reclaimed using strong magnetic-floatation process,
TiO in iron selection tailings2In the case of grade 11.50%, TiO can be obtained2Grade is more than 47%, comprehensive recovery and is more than 35%
Ilmenite concentrate.But research shows that the technique is only suitable for TiO in mine tailing2Grade is more than 11% situation, and uses the technique,
TiO in flotation tailing2Grade is up to 12.12%, TiO2Loss, waste greatly.
The content of the invention
The purpose of the present invention provides a kind of strong adaptability, energy-conservation aiming at the above-mentioned problems in the prior art
Effect is good, the good in economic efficiency TiO from iron tailings2Ilmenite is reclaimed in the low-grade titaniferous iron tailings of grade≤9.5%
Beneficiation method, titanium resource is set to have obtained effective recovery.
To realize the above-mentioned purpose of the present invention, a kind of ore dressing that ilmenite is reclaimed from low-grade titaniferous iron tailings of the present invention
Method use technical scheme be：
A kind of beneficiation method that ilmenite is reclaimed from low-grade titaniferous iron tailings of the present invention, using following processing step：
1) by TiO2The grade low-grade choosing of -0.076mm grain size contents 55%~65% in 7%~9.5%, material
Iron tailings, first carry out one section of high intensity magnetic separation, one section of high intensity magnetic separation mine tailing of dishing out；One section of high intensity magnetic separation concentrate of acquisition is fed into ore grinding-two
Section high intensity magnetic separation-low intensity magnetic separation iron removaling operation, two sections of high intensity magnetic separation mine tailings of dishing out, discharge low intensity magnetic separation remove iron product；After low intensity magnetic separation iron removaling
Mine tailing gives ore deposit as titanium flotation operation；
One section of described high intensity magnetic separation uses electromagnetism pulsating high gradient intensity magnetic separator, and magnetic induction intensity is 0.8~1.0T；Two sections
High intensity magnetic separation uses permanent magnetism pulsating high gradient magnetic separator, and magnetic induction intensity is 0.2~0.4T；Field strength during the operation of low intensity magnetic separation iron removaling uses
Wet-type permanent magnet drum type magnetic separator, magnetic induction intensity are 0.2~0.25T；
2) titanium flotation operation using one thick four it is single-minded sweep, the direct flotation flow that chats sequentially returns, flotation of dishing out scans tail
Ore deposit, obtain TiO2The ilmenite concentrate of grade >=46%；It is to each operation dosing that ore deposit calculates by titanium flotation operation：
Roughing flotation：600~700g/t of sulfuric acid 400~450g/t, MT；Flotation selected I：Sulfuric acid 55~60g/t, MOH
30~35g/t；Flotation selected II：15~20g/t of sulfuric acid 30~35g/t, MOH；Flotation selected III：Sulfuric acid 15~20g/t, MOH
7~8g/t；Flotation is scanned：90~95g/t of sulfuric acid 60~65g/t, MOH；Described MT is with mass ratio 1 by oxalic acid and MOH：
2.7~3.2 compoundings form.
- 0.076mm grain size contents are advisable 60%~65% in material in step 1), the mog of grinding operation for-
0.076 ㎜ 85%~90% is preferred.
MT dosages are preferred in 630~670g/t in described roughing flotation；Described oxalic acid and MOH mass ratio are 1：
2.9~3.1 scopes are advisable, with 1:3 be optimal.
Compared with prior art, a kind of beneficiation method for reclaiming ilmenite from low-grade titaniferous iron tailings of the present invention has
Following beneficial effect：
(1) mine tailing of high intensity magnetic separation jettisoning yield more than 40% is used before ore grinding, can effectively reduce follow-up ore grinding amount,
Energy-saving effect is notable.
(2) tail and low intensity magnetic separation iron removaling are thrown using high intensity magnetic separation before flotation, not only can effectively reduces into floating ore deposit amount, may be used also
To improve into floating grade, improve flotation effect.
(3) due to well below two sections high intensity magnetic separation concentrate amounts of concentrate amount of low intensity magnetic separation operation, therefore low intensity magnetic separation operation is set
After high intensity magnetic separation operation, weak magnetic separation equipment number of units can be greatly decreased in this configuration mode broken the normal procedure, and be a kind of bold
And beneficial innovation.
(4) magnetic separation --- the joint flotation technology that this method uses, with traditional magnetic separation --- compared with gravity separation technology, have
The advantages for the treatment of capacity is big, concentration ratio is high, strong adaptability, therefore it is especially suitable for the recovery to low-grade ilmenite.
(5) using compound drug MT as titanium collecting agent is selected, experiment shows that its sorting index is substantially excellent for roughing flotation operation
In single MOH medicaments.Its reason may be the good inhibitor of the oxalic acid component inherently gangue mineral in MT, while its
The hydrogen ion ionized out can clean the alkaline hydrophilic film on ilmenite surface again, promote its effect with MOH；In addition, oxalate
The a variety of deleterious cations that can also be complexed in ore pulp, good ore pulp environment is created for minerals separation, these factors are final
The flotation performance of compound drug is set to be substantially better than single MOH.Further, since selected and scan operation and do not have fresh ore pulp
Flowing into, the harmful ion content in ore pulp is not high, therefore using single MOH as collecting agent.
(6) present invention provides a kind of new method for the recycling of the titanium resource in China's iron tailings or other mine tailings,
This is significant to the situation for alleviating China's titanium resource provisioning deficiency.
Brief description of the drawings
Fig. 1 is a kind of process chart for the beneficiation method that ilmenite is reclaimed from low-grade titaniferous iron tailings of the present invention；
Fig. 2 is the number quality process figure for the beneficiation method that ilmenite is reclaimed in a kind of low-grade titaniferous iron tailings of the present invention.
Embodiment
To further describe the present invention, with reference to the accompanying drawings and examples to of the invention a kind of from low-grade titaniferous iron tailings
The beneficiation method of middle recovery ilmenite is described in further details.
Process object in the present embodiment is the fine tailings that certain domestic magnetic iron ore selects factory.Multielement point is carried out to the mine tailing
Analysis and titanium material phase analysis, the results are shown in Table 1~2.
The raw ore multielement analysis result % of table 1
| Element | TFe | TiO2 | SiO2 | Al2O3 | CaO | MgO | V2O5 | S | P | Scaling loss |
| Content | 15.38 | 8.90 | 30.18 | 11.24 | 7.23 | 4.40 | 0.17 | 0.12 | 0.86 | 2.87 |
The raw ore titanium material phase analysis result % of table 2
Analysis result shows that iron, Ti content are relatively low in the iron tailings, and wherein Iron grade is 15.38%, TiO2Grade is
8.09%, titaniferous ore is mainly ilmenite.
A kind of technique stream for the beneficiation method that ilmenite is reclaimed from low-grade titaniferous iron tailings of the invention as shown in Figure 1
Journey figure is simultaneously combined knowable to Fig. 2, and a kind of beneficiation method that ilmenite is reclaimed from low-grade titaniferous iron tailings of the present invention uses one section
High intensity magnetic separation throws tail-ore grinding-bis- section high intensity magnetic separation and throws the technique that titanium is selected in tail-low intensity magnetic separation iron removaling-flotation, specifically includes following step
Suddenly：
1) it is -0.076 ㎜ 60%, TiO by granularity2The titaniferous iron tailings of grade 8.92% carries out one section of high intensity magnetic separation, magnetic strength
It is 0.8T to answer intensity, can obtain TiO2The high intensity magnetic mineral of grade 13.54%, while the mine tailing of jettisoning yield 42.04%.
2) high intensity magnetic mineral obtained by step 1) is milled to -0.076mm and accounts for 85%, carry out two sections of high intensity magnetic separations, magnetic induction intensity
For 0.8T, TiO can be obtained2The high intensity magnetic mineral of grade 21.31%.
3) high intensity magnetic mineral obtained by step 2) is subjected to low intensity magnetic separation, magnetic induction intensity 0.2T, TiO can be obtained2Grade 21.57%
Weakly magnetic tailingses.
4) by obtained by step 3) weakly magnetic tailingses carry out direct flotation, flotation using one thick four it is single-minded sweep, chats sequentially returns
Flow, each operation dosing are：Roughing flotation (sulfuric acid:450g/t, MT:600g/t), the selected I (sulfuric acid of flotation:60g/t,
MOH:30g/t), the selected II (sulfuric acid of flotation:30g/t, MOH:15g/t), the selected III (sulfuric acid of flotation:15g/t, MOH:7.5g/
T), (sulfuric acid is scanned in flotation:60g/t, MOH:90g/t).After flotation, TiO can be obtained2The ilmenite concentrate of grade 46.22%, ilmenite concentrate
Middle TiO2The rate of recovery is up to 38.34%, achieves unexpected technique effect.
The present invention has also carried out Experimental Comparison, the medicament that roughing flotation uses for：
Comparative example 1：Sulfuric acid 450g/t, MOH 600g/t；Comparative example 2：Sulfuric acid 450g/t, MOH 450g/t.
Grade of titanium dioxide in the ilmenite concentrate that comparative example 1 obtains is only 43.23%, operation recovery 36.86%；It is right
Grade of titanium dioxide in the ilmenite concentrate that ratio 2 obtains is only 44.85%, and operation recovery is only 35.32%.
Comparative example 3：Using《Modern Mineral》8th periodical in 2011 step on " in iron selection tailings reclaim ilmenite experiment grind
Study carefully " optimum technology parameter in technological process in a text.Result of the test shows, the ilmenite concentrate grade of titanium dioxide finally obtained
For 45.12%, operation recovery is only 33.28%.
Claims (4)
1. a kind of beneficiation method that ilmenite is reclaimed from low-grade titaniferous iron tailings, it is characterised in that using following technique, step
Suddenly：
1) by TiO2The grade low-grade iron selection tailings of -0.076mm grain size contents 55%~65% in 7~9.5%, material,
First carry out one section of high intensity magnetic separation, one section of high intensity magnetic separation mine tailing of dishing out；One section of high intensity magnetic separation concentrate of acquisition is fed into-two sections strong magnetic of ore grinding
Choosing-low intensity magnetic separation iron removaling operation, two sections of high intensity magnetic separation mine tailings of dishing out, discharge low intensity magnetic separation remove iron product；Mine tailing after low intensity magnetic separation iron removaling is made
Ore deposit is given for titanium flotation operation；
One section of described high intensity magnetic separation uses electromagnetism pulsating high gradient intensity magnetic separator, and magnetic induction intensity is 0.8~1.0T；Two sections of strong magnetic
Choosing uses permanent magnetism pulsating high gradient magnetic separator, and magnetic induction intensity is 0.2~0.4T；Field strength wet type during the operation of low intensity magnetic separation iron removaling uses
Permanent-magnet drum type magnetic separator, magnetic induction intensity are 0.2~0.25T；
2) titanium flotation operation using one thick four it is single-minded sweep, the direct flotation flow that chats sequentially returns, flotation of dishing out scans mine tailing, obtains
Obtain TiO2The ilmenite concentrate of grade >=46%；It is to each operation dosing that ore deposit calculates by titanium flotation operation：
Roughing flotation：600~700g/t of sulfuric acid 400~450g/t, MT；Flotation selected I：Sulfuric acid 55~60g/t, MOH 30~
35g/t；Flotation selected II：15~20g/t of sulfuric acid 30~35g/t, MOH；Flotation selected III：Sulfuric acid 15~20g/t, MOH 7~
8g/t；Flotation is scanned：90~95g/t of sulfuric acid 60~65g/t, MOH；Described MT is with mass ratio 1 by oxalic acid and MOH：2.7
~3.2 compoundings form.
2. a kind of beneficiation method that ilmenite is reclaimed from low-grade titaniferous iron tailings as claimed in claim 1, its feature exist
In：For -0.076mm grain size contents 60%~65%, the mog of grinding operation is -0.076 ㎜ in material in step 1)
85%~90%.
3. a kind of beneficiation method that ilmenite is reclaimed from low-grade titaniferous iron tailings as claimed in claim 1 or 2, its feature
It is：MT dosages are 630~670g/t in described roughing flotation；Described MT is with mass ratio 1 by oxalic acid and MOH：2.9~
3.1 compoundings form.
4. a kind of beneficiation method that ilmenite is reclaimed from low-grade titaniferous iron tailings as claimed in claim 3, its feature exist
In：Described MT is with mass ratio 1 by oxalic acid and MOH：~3 compoundings form.
Priority Applications (1)
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| CN109433407A (en) * | 2018-09-14 | 2019-03-08 | 昆明理工大学 | The recovery method of ultra tiny grade ilmenite in a kind of high intensity magnetic separation tailing |
| CN109967222A (en) * | 2019-03-29 | 2019-07-05 | 中冶北方（大连）工程技术有限公司 | Apatite ilmenite selects titanium to drop general labourer's skill |
| 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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| CN109433407A (en) * | 2018-09-14 | 2019-03-08 | 昆明理工大学 | The recovery method of ultra tiny grade ilmenite in a kind of high intensity magnetic separation tailing |
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| CN111054520A (en) * | 2019-11-11 | 2020-04-24 | 昆明理工大学 | Method for improving recovery rate of titanium concentrate through pulse microwave pretreatment |
| CN110882826A (en) * | 2019-11-25 | 2020-03-17 | 四川龙蟒矿冶有限责任公司 | Method for recovering fine-particle ilmenite from vanadium titano-magnetite titanium-separation total tailings |
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