CN108580032A - A kind of more metal association iron selection tailings roasting-magnetic-are mixed to float united beneficiation method - Google Patents
A kind of more metal association iron selection tailings roasting-magnetic-are mixed to float united beneficiation method Download PDFInfo
- Publication number
- CN108580032A CN108580032A CN201810799532.4A CN201810799532A CN108580032A CN 108580032 A CN108580032 A CN 108580032A CN 201810799532 A CN201810799532 A CN 201810799532A CN 108580032 A CN108580032 A CN 108580032A
- Authority
- CN
- China
- Prior art keywords
- flotation
- concentrate
- tailing
- fluorite
- rare earth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/005—Pretreatment specially adapted for magnetic separation
- B03C1/015—Pretreatment specially adapted for magnetic separation by chemical treatment imparting magnetic properties to the material to be separated, e.g. roasting, reduction, oxidation
-
- 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
- B03C1/02—Magnetic separation acting directly on the substance being separated
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/02—Roasting processes
-
- 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
- B03D2201/04—Frothers
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention relates to a kind of more mixed floating united beneficiation methods of metal association iron selection tailings roasting magnetic, belong to Mineral Processing Engineering and resource comprehensive utilization utilizes field.This method is that more metal association iron selection tailings are carried out fluidization magnetizing roast under reducing atmosphere, and material carries out low intensity magnetic separation after roasting, obtains weak magnetic concentrate selection and low intensity magnetic separation tailing；Fluorite rare earth bulk flotation is carried out to low intensity magnetic separation tailing, obtains bulk flotation concentrate and bulk flotation tailing, bulk flotation concentrate carries out high intensity magnetic separation, carries out rare earth flotation to high intensity magnetic separation concentrate, obtains rare earth flotation concentrate and rare earth flotation tailing；Fluorite is carried out to strong magnetic tail mine, obtains fluorite and fluorite tailing；It to the pickling of bulk flotation tailing, is separated by solid-liquid separation, obtains rich niobium slag and pickling tailing.Iron ore concentrate, fluorite concentrate and rare earth ore concentrate, and rich niobium slag are finally obtained using the present invention, to realize the comprehensive reutilization to more metal association iron selection tailings resources.
Description
Technical field
The present invention relates to a kind of mixed floating united beneficiation methods of more metal association iron selection tailings roasting-magnetic-, belong to mineral and add
Work engineering and resource comprehensive utilization utilize field.
Background technology
Bayan Obo mineral products resource very abundant is iron-rare earth-fluoro- niobium synthesis mineral deposit of Largest In China, has abundant
Iron, fluorite, rare earth and niobium.Contain the rare-earth mineral that 41% or more gross reserves has been verified in the world, cut-off has verified iron in 2012
About 1,400,000,000 tons of ore reserve, about 1.3 hundred million tons of association type fluorite, about 100,000,000 tons of rare earth reserves, more than 660 ten thousand tons of niobium oxide reserves.It makes clear one's meaning and position
Cloud pile of stones, earth or grass finds that so far, mainly with iron for main sorting object, only part rare earth is recovered, but the rate of recovery is even less than
30%, a large amount of rare-earth tailing resource is wasted, and has only put into part fund by its temporary storage protection, to ensure future
Demand of the Rare-earth Industry to raw material.In addition, there is hundred million tons of about 0.13% (Nb of fluorite ore and average grade2O5), reserves about 220
Ten thousand tons of niobium resource cannot also efficiently use.
At present using " the strong magnetic-flotation of weak magnetic-" technique recycling iron and rare earth, in view of production operation in the process using " early to select "
The principle of " early to throw ", a part of weak magnetism mineral and most of rare-earth mineral enter tailing, and iron content in tailing is made still to have
14% or so, total amount of rare earth 13% or so, fluorite content 20% or so, content of niobium 0.11% or so.In addition, flotation of rare earth process
In add floating agent, influence the further separation of the valuable minerals such as follow-up fluorite, therefore iron, fluorite, rare earth, niobium in tailing
Comprehensive utilization face many difficulties.Chinese patent if publication No. is CN107282288A discloses a kind of synthetical recovery weak magnetic
The beneficiation method of property iron, rare earth and fluorite, the rate of recovery of iron ore concentrate, rare earth and fluorite described in this method is respectively 65%, 30%,
49.5%, and fluorite flotation number it is more the shortcomings of.
Therefore, it is necessary to propose a kind of method that can efficiently separate such more metal associated resources, increasing the performance of enterprises
While, make maximum resource utilization.
Invention content
For the problem that above-mentioned various mineral recycling are difficult, the present invention provides a kind of in more metal association iron selection tailings
The novel integrated recoverying and utilizing method of iron, fluorite, rare earth and niobium resource, more metal association iron selection tailings refer to Bayan Obo tail
Tailing or Bayan Obo in mine library select tailing of the factory scene through selecting iron to obtain, and are replaced hereinafter with association iron selection tailings.
A kind of more metal association iron selection tailings roasting-magnetic-are mixed to float united beneficiation method, and the method is：By more metals
Association iron selection tailings carry out fluidization magnetizing roast under reducing atmosphere, and 500~900 DEG C of calcination temperature makes the red of weak magnetic
(brown) iron ore occurs reduction reaction and is changed into ferromagnetism iron mineral, and material carries out low intensity magnetic separation at 0.15~0.3T after roasting, obtains
Weak magnetic concentrate selection and low intensity magnetic separation tailing are obtained, weak magnetic concentrate selection is iron ore concentrate；It is floating that the mixing of fluorite rare earth is carried out to low intensity magnetic separation tailing
Choosing, obtains bulk flotation concentrate and bulk flotation tailing, bulk flotation concentrate carry out high intensity magnetic separation at 0.5~1.2T, to strong magnetic
Concentrate selection carries out rare earth flotation, obtains rare earth flotation concentrate and rare earth flotation tailing；Fluorite is carried out to strong magnetic tail mine, is obtained
Fluorite and fluorite tailing；It to the pickling of bulk flotation tailing, is separated by solid-liquid separation, obtains rich niobium slag and pickling tailing.
Red (brown) iron ore of the present invention refers to bloodstone or limonite, or both arbitrary proportion mixture.
Heretofore described ferromagnetism iron mineral is Fe3O4Or γ-Fe2O3, or both mixing.
The time of the preferably described fluidization magnetizing roast of the method for the invention is 10~30s.
The method of the invention further includes the steps that being classified fluidization magnetizing roast product, grinding, the classification
Step can carry out in the commercially available classifying equipoment of business, such as one kind in spiral classifier, hydrocyclone；The grinding can be in quotient
It is carried out in the commercially available grinding machine of industry, such as ball mill, agitator mill.
Roasting of the present invention carries out in the commercially available fluidized roaster of business, such as flash magnetization roasting stove, circulating fluidized
Change one kind in roaster, suspending magnetization roasting furnace.
Pickling of the present invention carries out in the commercially available reaction kettle of business, such as autoclave.
Of the present invention be separated by solid-liquid separation carries out in the commercially available filter of business, such as ceramic filter.
More metal association iron selection tailings roasting-magnetic-of the present invention are mixed to float united beneficiation method, the preferably described reproducibility
Atmosphere is provided by the gaseous mixture of reducibility gas and inert gas, total gas couette 3m3/ h~10m3/ h, the also Primordial Qi
Body is CO, H2Or both arbitrary proportion mixing.
More metal association iron selection tailings roasting-magnetic-of the present invention are mixed to float united beneficiation method, and the preferably described fluorite is dilute
Native bulk flotation is：Low intensity magnetic separation tailing is fed into flotation device and carries out fluorite rare earth flotation, collecting agent, inhibitor and regulator is added
Obtain bulk flotation concentrate and bulk flotation tailing, wherein the collecting agent is enuatrol, and dosage is 0.20~0.55kg/
t；Inhibitor is waterglass, and dosage is 0.20~0.80kg/t；Regulator is sodium carbonate, and dosage is 0.30~0.80kg/
t。
More metal association iron selection tailings roasting-magnetic-of the present invention are mixed to float united beneficiation method, and the preferably described rare earth is floating
It is selected as：It sizes mixing after high intensity magnetic separation concentrate is concentrated and feeds the flotation device progress selected operation of rare earth, addition inhibitor, rare-earth mineral activation
Agent, collecting agent, foaming agent, adjustment pH is 7~8, carries out the flotation operation of rare-earth mineral, carried out after roughing 1~3 time it is selected and 1
It scans to obtain rare earth ore concentrate for~3 times；Finally obtain rare earth flotation concentrate and rare earth flotation tailing.Wherein, inhibitor is oxalic acid,
Dosage is 0.15~0.40kg/t；Rare-earth mineral activator is prodan, and dosage is 1.00~3.00kg/t；Collecting agent is
Salicyl Hydroximic Acid or H316, dosage is 0.70~1.20kg/t；Foaming agent is No. two oil, and dosage is 0.02~0.05kg/t.
More metal association iron selection tailings roasting-magnetic-of the present invention are mixed to float united beneficiation method, and the preferably described fluorite is floating
It is selected as：It will size mixing after high intensity magnetic separation Tailing thickening and feed flotation device progress fluorite operation, addition inhibitor, collecting agent, flotation
Fluorite, carries out that 1~3 time selected and 1~3 time is scanned to obtain fluorite concentrate after roughing, wherein inhibitor is waterglass, dosage
For 0.15~0.40kg/t；Collecting agent is enuatrol, and dosage is 0.20~0.40kg/t.
More metal association iron selection tailings roasting-magnetic-of the present invention are mixed to float united beneficiation method, the preferably described pickling
For：The hydrochloric acid solution of weakly magnetic tailings and 6~10mol/L are subjected to pickling in autoclave, and using ceramic filter into
Row is separated by solid-liquid separation, and obtains acid leaching residue and pickling tailing, and acid leaching residue is rich niobium slag.
The present invention provides a kind of mixed floating united beneficiation method of more metal association iron selection tailings roasting-magnetic-, more metals
The Iron grade 10~20% of association iron selection tailings, fluorite grade 20~35%, rare earth grade 5~10%.
Technical scheme of the present invention is carried out according to the following steps：
(1) more metal association iron selection tailings fluosolids roastings：By more metal association iron selection tailings in reducing atmosphere into
Row fluidization magnetizing roast, reducing atmosphere are provided by the gaseous mixture of reducibility gas and inert gas, wherein reducing gas
Volume ratio with inert gas is 1:9~1:1, total gas couette 3m3/ h~10m3/ h, the reducing gas are CO, H2Or two
The mixing of person's arbitrary proportion roasts 10~30s with 500~900 DEG C of calcination temperature and obtains roasted ore.
(2) low intensity magnetic separation：Weak magnetic magnetic separator is fed after step (1) roasted ore is cooled down, weak magnetic 0.15~0.3T of field strength is obtained
Inferior fine magnetite concentrate and weakly magnetic tailings, inferior fine magnetite concentrate dewatered drying are iron ore concentrate.
(3) fluorite rare earth bulk flotation：Flotation device is fed after the weakly magnetic tailings that step (2) obtains are sized mixing, and to carry out mixing floating
It is elected to be industry, collecting agent, regulator and inhibitor is added, obtains bulk flotation concentrate and bulk flotation tailing.
(4) high intensity magnetic separation：The bulk flotation concentrate that step (3) is obtained carries out high intensity magnetic separation in 0.5~1.2T of magnetic field intensity, obtains
Obtain high intensity magnetic separation concentrate and high intensity magnetic separation tailing.
(5) rare earth flotation：The high intensity magnetic separation concentrate that step (4) is obtained carries out rare earth flotation, obtain rare earth flotation concentrate and
Rare earth flotation tailing；
(6) fluorite：The high intensity magnetic separation tailing that step (4) is obtained carries out fluorite, obtain fluorite and
Fluorite tailing；
(7) pickling：Reaction under high pressure of the bulk flotation tailing that step (3) is obtained in built-in 6~10mol/L hydrochloric acid solutions
Pickling is carried out in kettle, is separated by solid-liquid separation using ceramic filter after pickling, acid leaching residue and pickling tailing are obtained, and acid leaching residue is
Rich niobium slag.
Beneficial effects of the present invention are：Red (brown) iron ore reduction of weak magnetic is tool using magnetizing roast process by the present invention
The characteristic for having ferromagnetism magnetic iron ore is carried out fluidization magnetizing roast to mineral, is kept roasting material abundant based on magnetizing roast
Dispersion, is more easy to contact with reducing gas, keeps reaction more abundant.Iron ore is detached to the mineral low intensity magnetic separation after fluidisation state magnetizing roast
Object not only reduces the impurity of follow-up flotation step, improves flotation efficiency, reduces flotation difficulty, and iron mineral is also made to be easy to point
Choosing, improves the quality of iron ore concentrate, increases iron concentrate grade and the rate of recovery；The separation of iron ore concentrate, makes other valuable minerals
Enrichment has been arrived, fluosolids roasting process can also be such that the voidage of fluorite crystals increases, fluorite mineral surfaces is made to become loose porous,
More active sites are also produced simultaneously, make fluorite be easier to be combined with collecting agent, the ore pulp combined with collecting agent is by bubble
It carries and floats, compare traditional fluorite direct flotation, hence it is evident that improve the grade and the rate of recovery of fluorite concentrate.It is final using the present invention
Iron ore concentrate, fluorite concentrate and rare earth ore concentrate, and rich niobium slag are obtained, to realize to the comprehensive of more metal association iron selection tailings resources
It closes and recycles.
Description of the drawings
Fig. 1 is the process flow chart of the present invention.
Specific implementation mode
Following non-limiting embodiments can make those skilled in the art be more fully understood the present invention, but not with
Any mode limits the present invention.
Test method described in following embodiments is unless otherwise specified conventional method；The reagent and material, such as
Without specified otherwise, commercially obtain.
Embodiment 1
This example is using tailing in Bayan Obo Tailings Dam as raw material, and wherein iron (TFe) grade is 16.53%, fluorite
(CaF2) grade is 22.87%, and rare earth (REO) grade is 6.33%.Finally obtaining Iron grade using the method for the present invention is
66.77%, the iron ore concentrate that the rate of recovery is 87.23%；Rare earth grade is 66.10%, the rare earth ore concentrate that the rate of recovery is 80.03%；
Fluorite grade is 91.38%, and the fluorite concentrate that the rate of recovery is 80.55% specifically includes following steps：
(1) more metal association iron selection tailings fluosolids roastings：By more metal association iron selection tailings in reducing atmosphere into
Row suspending magnetization roasting, reducing atmosphere are by CO gases and N2The gaseous mixture of gas provides, wherein CO gases and N2Gas
Volume ratio is 2:8, total gas couette 6m3/ h, roasting 20s obtains roasted ore under 500 DEG C of calcination temperature.
(2) low intensity magnetic separation：Weak magnetic magnetic separator is fed after step (1) roasted ore is cooled down, weak magnetic field strength 0.25T obtains weak magnetic
Concentrate and weakly magnetic tailings, inferior fine magnetite concentrate dewatered drying are iron ore concentrate.
(3) fluorite rare earth bulk flotation：Flotation device is fed after the weakly magnetic tailings that step (2) obtains are sized mixing, and to carry out mixing floating
It is elected to be industry, collecting agent 0.35kg/t enuatrols, regulator 0.4kg/t sodium carbonate and inhibitor 0.45kg/t waterglass is added, obtains
To bulk flotation concentrate and bulk flotation tailing.
(4) high intensity magnetic separation：The bulk flotation concentrate that step (3) is obtained carries out high intensity magnetic separation in magnetic field intensity 0.8T, obtains strong
Magnetic concentrate and high intensity magnetic separation tailing.
(5) rare earth flotation：The high intensity magnetic separation concentrate that step (4) is obtained carries out rare earth flotation, and the suppression of 0.25kg/t oxalic acid is added
Preparation, 2.00kg/t prodan activators, 0.80kg/t sodium salicylate collecting agents, the oily foaming agents of 0.03kg/t bis-, adjustment
PH is 8.0, carries out the flotation operation of rare-earth mineral, carried out after roughing 3 times it is selected and scan to obtain rare earth ore concentrate for 1 time, obtain dilute
Native flotation concentrate and rare earth flotation tailing；
(6) fluorite：The high intensity magnetic separation tailing that step (4) is obtained carries out fluorite, adds the water glass of 0.30kg/t
The enuatrol collecting agent of glass inhibitor, 0.30kg/t, flotation fluorite carry out that 2 times selected and to scan to obtain fluorite for 1 time floating after roughing
Concentrate selection and fluorite tailing obtain fluorite and fluorite tailing；
(7) pickling：Autoclave of the bulk flotation tailing that step (3) is obtained in built-in 8.5mol/L hydrochloric acid solutions
Middle carry out pickling, is separated by solid-liquid separation after pickling using ceramic filter, and acid leaching residue and pickling tailing are obtained, and acid leaching residue is richness
Niobium slag.
Embodiment 2
This example is using tailing in Bayan Obo Tailings Dam as raw material, and wherein iron (TFe) grade is 17.57%, fluorite
(CaF2) grade is 25.44%, and rare earth (REO) grade is 7.24%.Finally obtaining Iron grade using the method for the present invention is
68.25%, the iron ore concentrate that the rate of recovery is 88.56%；Rare earth grade is 65.62%, the rare earth ore concentrate that the rate of recovery is 82.43%；
Fluorite grade is 92.83%, and the fluorite concentrate that the rate of recovery is 82.61% specifically includes following steps：
(1) more metal association iron selection tailings fluosolids roastings：By more metal association iron selection tailings in reducing atmosphere into
Row suspending magnetization roasting, reducing atmosphere are by CO gases and N2The gaseous mixture of gas provides, wherein CO gases and N2Gas
Volume ratio is 2:8, total gas couette 5m3/ h, roasting 25s obtains roasted ore under 550 DEG C of calcination temperature.
(2) low intensity magnetic separation：Weak magnetic magnetic separator is fed after step (1) roasted ore is cooled down, weak magnetic field strength 0.25T obtains weak magnetic
Concentrate and weakly magnetic tailings, inferior fine magnetite concentrate dewatered drying are iron ore concentrate.
(3) fluorite rare earth bulk flotation：Flotation device is fed after the weakly magnetic tailings that step (2) obtains are sized mixing, and to carry out mixing floating
It is elected to be industry, collecting agent 0.25kg/t enuatrols, regulator 0.30kg/t sodium carbonate and inhibitor 0.40kg/t waterglass is added, obtains
To bulk flotation concentrate and bulk flotation tailing.
(4) high intensity magnetic separation：The bulk flotation concentrate that step (3) is obtained carries out high intensity magnetic separation in magnetic field intensity 0.9T, obtains strong
Magnetic concentrate and high intensity magnetic separation tailing.
(5) rare earth flotation：The high intensity magnetic separation concentrate that step (4) is obtained carries out rare earth flotation, and the suppression of 0.30kg/t oxalic acid is added
Preparation, 1.50kg/t prodan activators, 0.85kg/t sodium salicylate collecting agents, the oily foaming agents of 0.04kg/t bis-, adjustment
PH is 7.5, carries out the flotation operation of rare-earth mineral, carried out after roughing 3 times it is selected and scan to obtain rare earth ore concentrate for 1 time, obtain dilute
Native flotation concentrate and rare earth flotation tailing；
(6) fluorite：The high intensity magnetic separation tailing that step (4) is obtained carries out fluorite, adds the water glass of 0.30kg/t
The enuatrol collecting agent of glass inhibitor, 0.30kg/t, flotation fluorite carry out that 3 times selected and to scan to obtain fluorite for 2 times floating after roughing
Concentrate selection and fluorite tailing obtain fluorite and fluorite tailing；
(7) pickling：Autoclave of the bulk flotation tailing that step (3) is obtained in built-in 8.5mol/L hydrochloric acid solutions
Middle carry out pickling, is separated by solid-liquid separation after pickling using ceramic filter, and acid leaching residue and pickling tailing are obtained, and acid leaching residue is richness
Niobium slag.
Embodiment 3
This example is using tailing in Bayan Obo Tailings Dam as raw material, and wherein iron (TFe) grade is 14.24%, fluorite
(CaF2) grade is 21.25%, and rare earth (REO) grade is 5.48%.Finally obtaining Iron grade using the method for the present invention is
68.93%, the iron ore concentrate that the rate of recovery is 88.64%；Rare earth grade is 67.88%, the rare earth ore concentrate that the rate of recovery is 83.51%；
Fluorite grade is 95.26%, and the fluorite concentrate that the rate of recovery is 83.71% specifically includes following steps：
(1) more metal association iron selection tailings fluosolids roastings are selected：In reducing atmosphere by more metal association iron selection tailings
Suspending magnetization roasting is carried out, reducing atmosphere is by CO gases and N2The gaseous mixture of gas provides, wherein CO gases and N2Gas
Volume ratio be 2:8, total gas couette 5m3/ h, roasting 20s obtains roasted ore under 650 DEG C of calcination temperature.
(2) low intensity magnetic separation：Weak magnetic magnetic separator is fed after step (1) roasted ore is cooled down, weak magnetic field strength 0.15T obtains weak magnetic
Concentrate and weakly magnetic tailings, inferior fine magnetite concentrate dewatered drying are iron ore concentrate.
(3) fluorite rare earth bulk flotation：Flotation device is fed after the weakly magnetic tailings that step (2) obtains are sized mixing, and to carry out mixing floating
It is elected to be industry, collecting agent 0.45kg/t enuatrols, regulator 0.6kg/t sodium carbonate and inhibitor 0.50kg/t waterglass is added, obtains
To bulk flotation concentrate and bulk flotation tailing.
(4) high intensity magnetic separation：The bulk flotation concentrate that step (3) is obtained carries out high intensity magnetic separation in magnetic field intensity 1.0T, obtains strong
Magnetic concentrate and high intensity magnetic separation tailing.
(5) rare earth flotation：The high intensity magnetic separation concentrate that step (4) is obtained carries out rare earth flotation, and the suppression of 0.30kg/t oxalic acid is added
Preparation, 2.00kg/t prodan activators, the H316 collecting agents of 0.85kg/t, the oily foaming agents of 0.04kg/t bis- adjust pH
Be 7.5, carry out the flotation operation of rare-earth mineral, carried out after roughing 3 times it is selected and scan to obtain rare earth ore concentrate for 1 time, obtain rare earth
Flotation concentrate and rare earth flotation tailing；
(6) fluorite：The high intensity magnetic separation tailing that step (4) is obtained carries out fluorite, adds the water glass of 0.35kg/t
The enuatrol collecting agent of glass inhibitor, 0.25kg/t, flotation fluorite carry out that 2 times selected and to scan to obtain fluorite for 1 time floating after roughing
Concentrate selection and fluorite tailing obtain fluorite and fluorite tailing；
(7) pickling：Autoclave of the bulk flotation tailing that step (3) is obtained in built-in 7.5mol/L hydrochloric acid solutions
Middle carry out pickling, is separated by solid-liquid separation after pickling using ceramic filter, and acid leaching residue and pickling tailing are obtained, and acid leaching residue is richness
Niobium slag.
Embodiment 4
This example is using tailing in Bayan Obo Tailings Dam as raw material, and wherein iron (TFe) grade is 13.17%, fluorite
(CaF2) grade is 20.22%, and rare earth (REO) grade is 8.13%.Finally obtaining Iron grade using the method for the present invention is
65.21%, the iron ore concentrate that the rate of recovery is 88.26%；Rare earth grade is 68.58%, the rare earth ore concentrate that the rate of recovery is 80.52%；
Fluorite grade is 93.51%, and the fluorite concentrate that the rate of recovery is 85.31% specifically includes following steps：
(1) more metal association iron selection tailings fluosolids roastings：By more metal association iron selection tailings in reducing atmosphere into
Row suspending magnetization roasting, reducing atmosphere are by CO gases and N2The gaseous mixture of gas provides, wherein CO gases and N2Gas
Volume ratio is 3:7, total gas couette 7m3/ h, roasting 23s obtains roasted ore under 500 DEG C of calcination temperature.
(2) low intensity magnetic separation：Weak magnetic magnetic separator is fed after step (1) roasted ore is cooled down, weak magnetic field strength 0.20T obtains weak magnetic
Concentrate and weakly magnetic tailings, inferior fine magnetite concentrate dewatered drying are iron ore concentrate.
(3) fluorite rare earth bulk flotation：Flotation device is fed after the weakly magnetic tailings that step (2) obtains are sized mixing, and to carry out mixing floating
It is elected to be industry, collecting agent 0.25kg/t enuatrols, regulator 0.5kg/t sodium carbonate and inhibitor 0.35kg/t waterglass is added, obtains
To bulk flotation concentrate and bulk flotation tailing.
(4) high intensity magnetic separation：The bulk flotation concentrate that step (3) is obtained carries out high intensity magnetic separation in magnetic field intensity 0.9T, obtains strong
Magnetic concentrate and high intensity magnetic separation tailing.
(5) rare earth flotation：The high intensity magnetic separation concentrate that step (4) is obtained carries out rare earth flotation, and the suppression of 0.30kg/t oxalic acid is added
Preparation, 1.56kg/t prodan activators, 0.75kg/t sodium salicylate collecting agents, the oily foaming agents of 0.03kg/t bis-, adjustment
PH is 8.0, carries out the flotation operation of rare-earth mineral, carried out after roughing 3 times it is selected and scan to obtain rare earth ore concentrate for 1 time, obtain dilute
Native flotation concentrate and rare earth flotation tailing；
(6) fluorite：The high intensity magnetic separation tailing that step (4) is obtained carries out fluorite, adds the water glass of 0.25kg/t
The enuatrol collecting agent of glass inhibitor, 0.35kg/t, flotation fluorite carry out that 3 times selected and to scan to obtain fluorite for 1 time floating after roughing
Concentrate selection and fluorite tailing obtain fluorite and fluorite tailing；
(7) pickling：Autoclave of the bulk flotation tailing that step (3) is obtained in built-in 7.5mol/L hydrochloric acid solutions
Middle carry out pickling, is separated by solid-liquid separation after pickling using ceramic filter, and acid leaching residue and pickling tailing are obtained, and acid leaching residue is richness
Niobium slag.
Claims (6)
1. a kind of more metal association iron selection tailings roasting-magnetic-are mixed to float united beneficiation method, it is characterised in that：The method is：
More metal association iron selection tailings are subjected to fluidization magnetizing roast under reducing atmosphere, 500~900 DEG C of calcination temperature makes weak
Magnetic red (brown) iron ore occurs reduction reaction and is changed into ferromagnetism iron mineral, and material carries out weak at 0.15~0.3T after roasting
Magnetic separation, it is iron ore concentrate to obtain weak magnetic concentrate selection and low intensity magnetic separation tailing, weak magnetic concentrate selection；Fluorite rare earth is carried out to low intensity magnetic separation tailing
Bulk flotation, obtains bulk flotation concentrate and bulk flotation tailing, bulk flotation concentrate carry out high intensity magnetic separation at 0.5~1.2T,
Rare earth flotation is carried out to high intensity magnetic separation concentrate, obtains rare earth flotation concentrate and rare earth flotation tailing；It is floating that fluorite is carried out to strong magnetic tail mine
Choosing obtains fluorite and fluorite tailing；It to the pickling of bulk flotation tailing, is separated by solid-liquid separation, obtains rich niobium slag and acid
Wash tailing.
2. according to the method described in claim 1, it is characterized in that：The reducing atmosphere is by reducibility gas and indifferent gas
The gaseous mixture of body provides, wherein the volume ratio of reducing gas and inert gas is 1:9~1:1, total gas couette 3m3/ h~
10m3/ h, the reducing gas are CO, H2Or both arbitrary proportion mixing.
3. according to the method described in claim 1, it is characterized in that：The fluorite rare earth bulk flotation is：By low intensity magnetic separation tailing
It feeds flotation device and carries out fluorite rare earth flotation, collecting agent, inhibitor and regulator is added and obtains bulk flotation concentrate and mixes floating
Select tailing, wherein the collecting agent is enuatrol, and dosage is 0.20~0.55kg/t；Inhibitor is waterglass, and dosage is
0.20~0.80kg/t；Regulator is sodium carbonate, and dosage is 0.30~0.80kg/t.
4. according to the method described in claim 1, it is characterized in that：The rare earth flotation is：It is adjusted after high intensity magnetic separation concentrate is concentrated
Slurry feeds flotation device and carries out the selected operation of rare earth, addition inhibitor, rare-earth mineral activator, collecting agent, foaming agent, and adjustment pH is
7~8, the flotation operation of rare-earth mineral is carried out, carries out that 1~3 time is selected and 1~3 time is scanned to obtain rare earth ore concentrate after roughing；Finally
Obtain rare earth flotation concentrate and rare earth flotation tailing.Wherein, inhibitor is oxalic acid, and dosage is 0.15~0.40kg/t；Rare earth
Mineral activation agent is prodan, and dosage is 1.00~3.00kg/t；Collecting agent is Salicyl Hydroximic Acid or H316, dosage is
0.70~1.20kg/t；Foaming agent is No. two oil, and dosage is 0.02~0.05kg/t.
5. according to the method described in claim 1, it is characterized in that：The fluorite is：It will be adjusted after high intensity magnetic separation Tailing thickening
Slurry feed flotation device carry out fluorite operation, addition inhibitor, collecting agent, flotation fluorite, carried out after roughing 1~3 time it is selected
It scans to obtain fluorite concentrate with 1~3 time, wherein inhibitor is waterglass, and dosage is 0.15~0.40kg/t；Collecting agent is
Enuatrol, dosage are 0.20~0.40kg/t.
6. according to the method described in claim 1, it is characterized in that：The pickling is：By weakly magnetic tailings and 6~10mol/L
Hydrochloric acid solution carries out pickling in autoclave, and is separated by solid-liquid separation using ceramic filter, and acid leaching residue and pickling are obtained
Tailing, acid leaching residue are rich niobium slag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810799532.4A CN108580032B (en) | 2018-07-19 | 2018-07-19 | Multi-metal associated iron ore tailing roasting-magnetic-mixed flotation combined ore dressing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810799532.4A CN108580032B (en) | 2018-07-19 | 2018-07-19 | Multi-metal associated iron ore tailing roasting-magnetic-mixed flotation combined ore dressing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108580032A true CN108580032A (en) | 2018-09-28 |
| CN108580032B CN108580032B (en) | 2020-03-13 |
Family
ID=63618673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810799532.4A Active CN108580032B (en) | 2018-07-19 | 2018-07-19 | Multi-metal associated iron ore tailing roasting-magnetic-mixed flotation combined ore dressing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108580032B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109821522A (en) * | 2019-01-23 | 2019-05-31 | 内蒙古科技大学 | A kind of rare-earth tailing deep processing prepares the method and its application of catalyst |
| CN110756332A (en) * | 2019-10-14 | 2020-02-07 | 中铝广西有色稀土开发有限公司 | Beneficiation method for recycling rare earth from iron ore tailings |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102319630A (en) * | 2011-07-28 | 2012-01-18 | 内蒙古科技大学 | Method for improving rare earth grade of rare earth ore |
| CN102319631A (en) * | 2011-07-28 | 2012-01-18 | 内蒙古科技大学 | A kind of from the Bayan Obo mine tailing method of flotation rare earth |
| CN103361495A (en) * | 2013-07-17 | 2013-10-23 | 内蒙古科技大学 | Method for extracting niobium from Bayan Obo mine tailing |
| CN103394408A (en) * | 2013-07-26 | 2013-11-20 | 北京科技大学 | Method for comprehensively recycling valuable minerals in rare-earth tailings |
| CN104096633A (en) * | 2014-07-07 | 2014-10-15 | 包钢集团矿山研究院（有限责任公司） | Mineral processing technology for comprehensively recycling various mineral resources from rare-earth tailings |
| CN104711413A (en) * | 2015-03-30 | 2015-06-17 | 东北大学 | Pre-oxidizing-thermal storage reducing-reoxidizing suspension roasting method for cyanidation slag |
| CN104726690A (en) * | 2015-03-30 | 2015-06-24 | 东北大学 | Hematite-siderite-limonite mixed iron ore three-stage suspension roasting-magnetic separation method |
| CN104745800A (en) * | 2015-03-30 | 2015-07-01 | 东北大学 | Three-stage suspension roasting-magnetic separation method for hematite-limonite mixed iron ores |
-
2018
- 2018-07-19 CN CN201810799532.4A patent/CN108580032B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102319630A (en) * | 2011-07-28 | 2012-01-18 | 内蒙古科技大学 | Method for improving rare earth grade of rare earth ore |
| CN102319631A (en) * | 2011-07-28 | 2012-01-18 | 内蒙古科技大学 | A kind of from the Bayan Obo mine tailing method of flotation rare earth |
| CN103361495A (en) * | 2013-07-17 | 2013-10-23 | 内蒙古科技大学 | Method for extracting niobium from Bayan Obo mine tailing |
| CN103394408A (en) * | 2013-07-26 | 2013-11-20 | 北京科技大学 | Method for comprehensively recycling valuable minerals in rare-earth tailings |
| CN104096633A (en) * | 2014-07-07 | 2014-10-15 | 包钢集团矿山研究院（有限责任公司） | Mineral processing technology for comprehensively recycling various mineral resources from rare-earth tailings |
| CN104711413A (en) * | 2015-03-30 | 2015-06-17 | 东北大学 | Pre-oxidizing-thermal storage reducing-reoxidizing suspension roasting method for cyanidation slag |
| CN104726690A (en) * | 2015-03-30 | 2015-06-24 | 东北大学 | Hematite-siderite-limonite mixed iron ore three-stage suspension roasting-magnetic separation method |
| CN104745800A (en) * | 2015-03-30 | 2015-07-01 | 东北大学 | Three-stage suspension roasting-magnetic separation method for hematite-limonite mixed iron ores |
Non-Patent Citations (1)
| Title |
|---|
| 张悦: ""白云鄂博稀土尾矿多组分综合回收工艺及耦合关系研究"", 《中国博士学位论文全文数据库 工程科技Ⅰ辑》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109821522A (en) * | 2019-01-23 | 2019-05-31 | 内蒙古科技大学 | A kind of rare-earth tailing deep processing prepares the method and its application of catalyst |
| CN109821522B (en) * | 2019-01-23 | 2021-11-02 | 内蒙古科技大学 | Method for preparing catalyst by deep processing of rare earth tailings and application thereof |
| CN110756332A (en) * | 2019-10-14 | 2020-02-07 | 中铝广西有色稀土开发有限公司 | Beneficiation method for recycling rare earth from iron ore tailings |
| CN110756332B (en) * | 2019-10-14 | 2022-04-12 | 中铝广西有色稀土开发有限公司 | Beneficiation method for recycling rare earth from iron ore tailings |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108580032B (en) | 2020-03-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108480037A (en) | A kind of beneficiation method recycling iron, rare earth, fluorite and niobium from the iron tailings of association multi-metallic minerals | |
| CN101444761B (en) | A floatation separation method of hamartite misch metal mine containing high content mengite | |
| CN100383259C (en) | Method for recovering nickel and cobalt from nickel oxide ore and nickel silicide ore | |
| CN102974456B (en) | Separation process of refractory iron ore | |
| CN101862703B (en) | Separation-smelting combined method for producing iron ore concentrate from oolitic lean hematite | |
| CN108580023B (en) | Multi-component recycling and beneficiation method for iron tailings associated with rare earth minerals | |
| WO2017185946A1 (en) | Method for processing low-grade laterite nickel ore and beneficiation method therefor | |
| US20230227326A1 (en) | Method for producing battery-grade nickel sulfate by using laterite nickel ore | |
| CN104785347B (en) | A kind of method for separating of the low-grade ferric oxide ore of high silicon | |
| CN108580031A (en) | A kind of beneficiation method that more metal association iron selection tailings are roasted in advance | |
| CN101550483A (en) | Combined flow path processing method of laterite nickel | |
| CN102181643A (en) | Method for extracting rare earth from rare earth tailings | |
| CN103757200B (en) | Method for separating and enriching ferronickel from laterite-nickel ore | |
| CN105772216A (en) | Novel method for producing iron concentrates through complex refractory iron ore | |
| CN108624765A (en) | A kind of technique from the low-grade high efficiente callback of tailing containing rubidium rubidium | |
| CN111482264B (en) | Method for treating medium lean oxidized ore | |
| CN111686925B (en) | Mineral processing technology for recovering rare earth, fluorite and barite from low-grade rare earth ore | |
| CN109647616B (en) | Method for comprehensively recovering magnetite and copper minerals from copper slag flotation tailings | |
| CN107955882A (en) | The high-alkali Ultrafine Grinding extraction of gold process of Refractory Au-ores | |
| CN101418359A (en) | Method for extracting iron and high grade ferro-nickel alloy from laterite nickle mine | |
| CN103934093A (en) | Beneficiation method for improving micro-fine particle refractory iron ore flotation ore-concentrate production rate and recovery rate | |
| CN108580032A (en) | A kind of more metal association iron selection tailings roasting-magnetic-are mixed to float united beneficiation method | |
| CN105709921B (en) | A kind of method that selective magnetic method reclaims iron from gold smelting waste residue | |
| CN104846189B (en) | Fluidized roasting separation method for siderite-containing mixed iron ore | |
| CN109133141A (en) | A kind of separation method of the bloodstone of bastnaesite reduction association Rare Earth Mine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |