CN106378254A - Method for removing magnetic impurities from tantalum-niobium waste ores by utilizing combined magnetic separation - Google Patents
Method for removing magnetic impurities from tantalum-niobium waste ores by utilizing combined magnetic separation Download PDFInfo
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- CN106378254A CN106378254A CN201611127740.7A CN201611127740A CN106378254A CN 106378254 A CN106378254 A CN 106378254A CN 201611127740 A CN201611127740 A CN 201611127740A CN 106378254 A CN106378254 A CN 106378254A
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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
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/025—High gradient magnetic separators
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Abstract
The invention provides a method for removing magnetic impurities from tantalum-niobium waste ores by utilizing combined magnetic separation. The method comprises the following steps: by taking the tantalum-niobium waste ores or tailings as raw materials and adopting a magnetic separation method, grinding and screening the tantalum-niobium tailings and/or the tantalum-niobium waste ores; removing iron and impurities in advance by adopting wet type low-intensity permanent magnetic separation to obtain a tantalum-niobium gravity-separated ore material; separating a magnetic ore material from a nonmagnetic ore material of the tantalum-niobium gravity-separated ore material by adopting a combined magnetic separation method; subsequently extracting tantalum-niobium ore resource products by adopting a magnetic separation, gravity separation and floatation separation combined process, wherein the resource products include lithium feldspar powder, lithionite concentrate powder and tantalum-niobium concentrate powder; the combined magnetic separation respectively includes three stages of magnetic separation processes, including permanent magnetic separation, medium-intensity magnetic separation and high-intensity magnetic separation in sequence. The method provided by the invention is obvious in economic benefits and technical benefits, small in treatment of three wastes and high in recovery rate of tantalum-niobium ore resource products. The invention provides a combined magnetic separation method, which is simple in process and quite high in efficiency, for removing magnetic impurities in tantalum-niobium waste ores. The combined magnetic separation method is obvious in economic benefits and technical benefits, small in treatment of three wastes and high in recovery rate of tantalum-niobium ore resource products.
Description
Technical field：
The present invention relates to one kind reclaims in the multi mineral materials process such as tantalum-niobium concentrate stone from Ta Nb tailings and ettle removing
The method of impurity, the method that particularly a kind of utilization joint magnetic separation removes magnetic impurity in tantalum niobium ettle.
Background technology：
Tantalum and niobium are two kinds of important yttrium materials, have important strategy and economic worth, send out with economic
Exhibition, various electronic products consumption sustainable growth, so that the significantly growth of tantalum, niobium industrial water requirement, exacerbates tantalum, niobium minerals produces money
The tensity of source supply.The columite-tantalite ore rich reserves of China, wherein tantalum account for the 20% of world saving, and niobium accounts for the world
15%, but China tantalum niobium minerals grade is low, and many metals intergrowth mineral bed is many, complicated components, and tantalum niobium concentrate thing disseminated grain size is thin, and ore dressing is returned
Yield is relatively low, and adopts existing reselecting method to reclaim the tantalum niobium concentrate thing of fine mud level -0.037mm, and recovery difficult is big, the response rate
Low, waste serious.Also there are more available ore deposits in tantalum niobium barren rock after the exploitation to tantalum niobium concentrate thing is reclaimed simultaneously
Goods and materials source, is not recycled and is made waste and lose such as lithium Anhydrite and lepidolite powder etc., cannot reclaim.
These micro tantalum pentoxides in tantalum niobium concentrate barren rock, niobium pentaoxide extracts the method separated is not also
A lot, existing method extraction and application rate is low.As reached 7km2 in Yichuan tantalum niobium concentrate area area, proved reserves, 1.85 tons of tantalum,
1.49 tons of niobium, 75.22 ten thousand tons of lithium, 40.17 ten thousand tons of rubidium, 5.43 ten thousand tons of caesium, belong to albite, lepidolite granite type contain tantalum, niobium,
The large-scale ore body of multiple rare metal such as lithium, rubidium, Ta -Nb industry reserves account for 44.3% that the whole nation is verified, and the exploitation of this ore deposit is often produced per year
Raw 400,000 tons about of tantalum niobium concentrate country rock, horsestone, lean ore and stripping barren rock etc., these barren rocks claim " black-spot ores " in local mining area.
In addition to minority is used for filling out hole, paves the way, majority is not comprehensively utilized these barren rocks.Tens million of tons are accumulated, above-mentioned
These tantalum niobium concentrate barren rocks in Ta2O5<0.01%, Nb2O5<0.005%, do not reach production-grade, always as abandoned mine, barren rock at
Reason, waste of resource, not only affect the exploitation of other high-quality mineral reserve, and take mountain region, and surrounding enviroment are brought with serious danger
Evil, the security of the lives and property of the periphery people is constituted a threat to, from tantalum niobium concentrate barren rock reclaim tantalum-niobium concentrate, lepidolite powder and
Lithium feldspar powder can be realized turning waste into wealth.
Feld Spar in Yichun Guimaraesite Mine is the most representational tantalum niobium lithium resource of China, and its reserves, yield, export volume all occupy whole nation head
Position.Separate that exhibiting high surface ore deposit, side slope ore deposit, mine tailing, barren rock, this grade of ore of horsestone ... be low, complicated difficult in recovery process
Choosing, property complexity, the impurity content height such as mineral constituent is many, disseminated grain size is thin, ferrotianium manganese etc., are that China tantalum niobium lithium resource is distinctive
" black-spot ores " type.
Domestic at present published document and patent are using " gravity treatment-flotation-separation by shaking table " or " magnetic separation-flotation-weight
The process of choosing " reclaims tantalum-niobium concentrate, and the response rate of tantalum-niobium concentrate is typically 80% about, and simultaneously from tantalum niobium raw ore
There is not been reported to extract tantalum-niobium concentrate and other multi mineral material such as method such as lithium Anhydrite and lithium Yun Fen in stone and tantalum niobium barren rock；
Select principle and the technical study of tantalum-niobium concentrate and its multi mineral raw material using process integration from tantalum niobium raw ore and barren rock
Especially few.
How to extract the micro tantalum-niobium concentrate of high-quality and other lithium Anhydrites multiple in tantalum niobium tcrude ore and barren rock simultaneously
Powder and lepidolite powder etc. are reality need to be faced during current mining, how to make the several hundred million tons of tantalums that China produces
Niobium minerals barren rock solid waste turns waste into wealth, and has good economic implications and environment protection significance.
Therefore, in the urgent need to develop a kind of economical, efficiently, environmental protection reclaim from Ta Nb tailings stone and barren rock tantalum niobium and its
The new method of his multiple ore resources.And tantalum niobium and other multiple ore resources to be reclaimed from Ta Nb tailings stone and barren rock it is important to
Its relative substance material, particularly magnetic impurity will be removed in Ta Nb tailings stone and ettle.
At present, the related selecting and purchasing of Feld Spar in Yichun Guimaraesite Mine, in smelting enterprise, only applicant company is with the height of tantalum niobium concentrate barren rock
The enterprise of effect synthetical recovery, the first Application in magnetic impurity field in removing Feld Spar in Yichun Guimaraesite Mine barren rock for the inventive method.
Meanwhile, the present disclosure additionally applies for the comprehensive utilization containing the more low-grade Anhydrite mine tailing of magnetic impurity is reclaimed.Go in process integration
Except the field of magnetic impurity, domestic also do not use three roads joint magnetic separation process correlation techniques be removed magnetic in tantalum niobium ettle
The precedent of the method for property impurity particularly ferrum.
Content of the invention：
The present invention provides a kind of method that utilization joint magnetic separation removes magnetic impurity in tantalum niobium ettle, with tantalum niobium ettle or tail
Ore deposit is raw material, using magnetic selection method, by Ta Nb tailings and/or tantalum niobium ettle after ore grinding screening, weak using wet type permanent magnet
Magnetic separation removes ferrum removing impurities in advance, obtains tantalum niobium gravity treatment mineral material, provides magnetic in the removal tantalum niobium concentrate barren rock of a kind of process is simple, efficiency pole
Property impurity joint magnetic selection method.Substantially, three-protection design is little, the tantalum niobium concentrate goods and materials product-derived response rate for its economic technology benefit
High.
The method that a kind of present invention utilization joint magnetic separation removes magnetic impurity in tantalum niobium ettle, is former with tantalum niobium ettle
Material, using magnetic selection method, by Ta Nb tailings and/or tantalum niobium ettle after ore grinding screening, pre- using wet type permanent magnet low intensity magnetic separation
First remove ferrum removing impurities, obtain tantalum niobium gravity treatment mineral material, it is through joint magnetic selection method separation magnetic and non-magnetic by tantalum niobium gravity treatment mineral material
Property mineral material, then through magnetic separation-gravity treatment-joint flotation technology, extract tantalum niobium concentrate goods and materials product-derived；Described resource product includes lithium
Feldspar powder, lepidolite fine ore, tantalum-niobium concentrate powder；
Described joint magnetic separation is followed successively by permanent-magnet concentration-middle magnetic magnetic separation-magnetic separator three stages of magnetic separation technique respectively.
Described joint magnetic separation is to control the ore pulp of tantalum niobium gravity treatment mineral material to design effluent concentration for 25- to ore deposit environment
35Wt%, mill slurry fineness -0.074mm or 200-220 mesh>60%, it is 75-80t/ hour to ore deposit efficiency.
The permanent-magnet concentration of described joint magnetic separation, is to carry out wet type permanent magnet low intensity magnetic separation using counter-current magnetic separator, by tantalum niobium gravity treatment
Most ferromagnetism titaniums in mineral material ore pulp, ferrum, mangana matter separate, remove, and exclusion strongly magnetic mineral is to tantalum niobium concentrate resource
The impact that product gravity treatment is reclaimed.
The middle magnetic magnetic separation of described joint magnetic separation and magnetic separator be carried out using pulsating high gradient magnetic separator with vertical ring in, Qiang Ci
Magnetic separation, separates magnetic and non magnetic ore, reduce titanium, ferrum, manganese magnetic with containing tantalum, the microlite of niobium, pyrochlore non magnetic ore deposit
Interference in re-selection procedure for the thing, controls the impact to Muscovitum, feldspar concentrate Product recycling for the magnetic mineral.
The magnetic plant of the permanent-magnet concentration of described joint magnetic separation-middle magnetic magnetic separation-magnetic separator is respectively permanent-magnet concentration
HCT-1050 counter-current magnetic separator, and middle magnetic magnetic separation-magnetic separator device is SLon-1500 pulsating high gradient magnetic separator with vertical ring.
Described joint magnetic separation is before permanent-magnet concentration, and tantalum niobium gravity treatment mineral material is carried out ore grinding screening or ball milling, then
Sieved by high frequency shale shaker, pass through spiral classifier after screening according to the grading of ore pulp, feed phase by different granularities
The permanent magnetic separator answered carries out iron removal by magnetic separation.
Magnetic concentration equipment in described entrance after permanent-magnet concentration, carries out magnetic fluid and separates, sub-elect magnetic ore pulp and non-magnetic
Property ore pulp, feed different gravity treatment sets respectively, magnetic ore pulp obtains tantalum-niobium concentrate powder after gravity treatment, Tailings Slurry enters slow
Rush pond, obtain circulation clear water finally by water circulation system and be used for cyclic production；And sewage obtains bed material sand after precipitation filter pressing,
For building material, ceramic bed material；And concentrated after non magnetic ore pulp gravity treatment, then carry out magnetic separator.
Magnetic pole surfaces magnetic field intensity H=6000-26000A/m when described permanent-magnet concentration controls magnetic separation, tantalum niobium gravity treatment mineral material
The specific susceptibility of granule is X0>38×10-6cm3/g.
The inventive method technological process of production is as follows：Raw material gives up, mine tailing → crushing and screening → tantalum niobium gravity treatment mineral material → ore deposit
Slurry → permanent-magnet concentration → iron dross removing → middle magnetic magnetic separation → remove magnetic material → gravity treatment → tantalum-niobium concentrate powder → magnetic separator → cloth processed
Ditch reclaims → tantalum-niobium concentrate powder → flotation processed, lepidolite fine ore processed, lithium feldspar concentrate powder.
Illustrate, manufacturing technique method of the present invention is to be produced with Feld Spar in Yichun Guimaraesite Mine barren rock or tailings stone for raw material.
In Feld Spar in Yichun Guimaraesite Mine barren rock or tailings stone, the comprehensive grade of tantalum niobium is only ten thousand/0.6-2.2, the product of lithium oxide
Position is only 0.1-0.4%, and the comprehensive grade of potassium sodium is about 5%, and the grade of aluminium sesquioxide is about 15%, this ore properties are complicated,
The impurity contents such as mineral constituent is many, disseminated grain size is thin, ferrotitanium manganese are high（>1%）, it is China tantalum niobium lithium resource distinctive " black-spot ores "
Type.Because barren rock natural talent is poor, both do not reach the requirement to Anhydrite raw material for the glass-ceramic industry, beaten less than tantalum niobium lithium ore deposit yet
Bed mining grade requires, and Mineral separation is difficult with synthetical recovery, is therefore reasonably developed always and appropriate process, removes
Minority is used for paving the way, fill out that hole is outer, and the overwhelming majority is considered as solid waste heap and abandons, not only cause the serious wave of mineral resources
Take, contain and bring serious harm to environment of mining area and perimeter security.
Magnetic impurity is the influence factor of the comprehensive reutilization maximum of tantalum niobium concentrate barren rock or tailings stone, by the present invention's
Application, magnetic impurity is able to high efficiency separation, removal；After magnetic separation remove impurity, joint " magnetic fluid separation-gravity treatment-flotation " technological process,
Obtain the mineral products of the tantalum niobium concentrate resource products such as lithium feldspar powder, lepidolite fine ore, tantalum-niobium concentrate powder, main tantalum niobium concentrate resource is produced
The content of the ferrotianium manganese magnetic impurity of the mineral products of product is reduced to<0.1%, far above level of the same trade.
The present invention has greatly economic benefit and social enviroment protection benefit, and joint magnetic separation process removes the ore deposit after magnetic magazine
Value of the product cost.
Using the magnetic selection method of the present invention, compared with more than 200 tons of the daily raising of existing process ore deposit treating capacity, production cost reduces
5 yuan/t raw ore, year increases the millions of unit of economic benefit.
The process of the present invention is simple, and beneficiation cost is low, not only tantalum niobium tcrude ore can be carried out extraction sub-elect multiple
Mineral material extracts tantalum-niobium concentrate and lepidolite concentrate, lithium feldspar concentrate powder etc. moreover it is possible to enter sorting to rejected ore；Solve discarded
Ore brings serious harm to surrounding enviroment, and problem that the security of the lives and property of the periphery people is constituted a threat to, and realizes
Tantalum-niobium concentrate and multiple tantalum niobium concentrate resource such as lithium feldspar powder and lepidolite fine ore of high-quality is extracted from tcrude ore and barren rock
The method of product, tantalum-niobium concentrate and the lepidolite concentrate response rate are high, reach more than 85%, make the several hundred million tons of tantalum niobium concentrates that China produces
Barren rock solid waste turns waste into wealth, and has big economic and social benefit.
The present invention by production test repeatedly, constantly carry out parameter optimization, eventually form production efficiently, energy consumption
Less, the production line minimum, economic benefit is optimal, equipment, the combination setting of technological parameter are put into.
Specific embodiment：With reference to specific embodiment further detailed description to the present invention.
Embodiment of the present invention is with Feld Spar in Yichun Guimaraesite Mine Ta Nb tailings stone and tantalum niobium ettle as raw material, and that is, present invention institute is real
Apply to as if Feld Spar in Yichun Guimaraesite Mine be stripped out in recovery process side slope ore deposit, surface ore deposit, barren rock, horsestone, the tail after smelting
The low-grade ettle such as ore deposit, tailings, meanwhile, the present invention is applied to the low-grade feldspar ore more containing magnetic impurity.
The present invention is primarily directed to the problem of prior art presence, provides the removal tantalum of a kind of process is simple, ultrahigh in efficiency
In niobium minerals barren rock or tailings stone magnetic impurity joint magnetic selection method.Remove magnetic in tantalum niobium ettle through joint magnetic separation of the present invention
Property impurity method preparation tantalum niobium concentrate resource product in its main magnetic impurity content such as ferrum and magnesium are greatly reduced, with its oxygen
Compound meter, in raw material tantalum niobium ettle, ferrum oxide, content of magnesia, respectively by 1.23% and 0.1%, are reduced to tantalum niobium concentrate resource and produce
Product ferrum oxide, content of magnesia are respectively 0.09% and 0.02%.
The method utilizing magnetic impurity in joint magnetic separation removal tantalum niobium ettle through the present invention, is former with tantalum niobium ettle
Material, through removing the extraction tantalum niobium concentrate resource product after magnetic impurity, it can be extracted using existing method.
The present invention utilizes the method that joint magnetic separation removes magnetic impurity in tantalum niobium ettle, is using permanent magnetism-middle magnetic-strong magnetic
Three stages of magnetic separation except flowing molten iron journey, by the magnetic impurity high efficiency separation in tantalum niobium concentrate barren rock, remove and extract tantalum niobium concentrate resource product；Tool
Body following steps：
1）Permanent-magnet concentration：Carry out wet type permanent magnet low intensity magnetic separation using by the HCT-1050 counter-current magnetic separator that Hubei company produces,
By impurity, wherein mainly Fe such as ferromagnetism ferrotianium manganese most in ore pulp2O3High efficiency separation, removal, exclude iron mineral pair
The impact that tantalum niobium concentrate thing gravity treatment is reclaimed；Magnetic pole surfaces magnetic field intensity H=6000-26000A/ when described permanent-magnet concentration controls magnetic separation
M, the specific susceptibility of tantalum niobium gravity ore material particles is X0>38×10-6cm3/g；
2）Middle magnetic magnetic separation：Using using the SLon-1500 being produced by Jiangxi company, the high ladder of vertical ring pulsation of model 1T level
Degree magnetic separator carries out middle magnetic magnetic separation, separates magnetic and non magnetic ore, reduces the magnetic such as titanium, ferrum, manganese and the fine grain containing tantalum, niobium
Interference in re-selection procedure for the non magnetic ores such as stone, pyrochlore, mitigates the shadow to Muscovitum, feldspar concentrate quality for the magnetic mineral
Ring；
3）Magnetic separator：Ring pulsating high gradient magnetic separation is stood using the SLon-1500 model 1.3T level being produced by Jiangxi company
Machine carries out magnetic separator, further separately magnetic and non magnetic ore, reduces the magnetic such as titanium, ferrum, manganese and the fine grain containing tantalum, niobium
Interference in re-selection procedure for the non magnetic ores such as stone, pyrochlore, mitigates the shadow to Muscovitum, feldspar concentrate quality for the magnetic mineral
Ring.
The control present invention to ore deposit environment is：Ore pulp design effluent concentration is 30%, and mog -0.074mm is 200 mesh>
60%, or be 1200t/d to ore deposit efficiency for 75t/ hour.
The present invention, before permanent-magnet concentration, mineral is carried out ore grinding screening or ball milling, then is sieved by high frequency shale shaker, sieve
Obtaining tantalum niobium gravity treatment mineral material by spiral classifier after point is ore pulp, further according to the grading of ore pulp, by different granularities
Feed permanent magnetic separator and carry out iron removal by magnetic separation.
Embodiment
Permanent-magnet magnetic of the present invention feeds middle magnetic separator after removing ferrum, carries out magnetic fluid and separates, sub-elects magnetic ore pulp and non-magnetic
Property ore pulp, feed different gravity treatment units respectively, after magnetic ore pulp gravity treatment obtain tantalum-niobium concentrate powder, Tailings Slurry enter buffering
Pond, obtains circulation clear water finally by water circulation system and is used for cyclic production；And sewage obtains bed material sand after precipitation filter pressing, can
It is used as building material, ceramic bed material.And concentrated after non magnetic ore pulp gravity treatment, and carry out magnetic separator.
Magnetic separator of the present invention is aimed at the expense magnetic ore pulp after middle word magnetic separation, passes through cloth ditch and reclaim acquisition tantalum after magnetic separation
Niobium fine ore, Tailings Slurry obtains lepidolite fine ore and lithium feldspar concentrate powder through floatation process.Last Tailings Slurry enters slow
Rush pond, carry out water circulation and filter pressing.
In Feld Spar in Yichun Guimaraesite Mine barren rock, the comprehensive grade of tantalum niobium is only ten thousand/0.6-2.2, and the grade of lithium oxide is only 0.1-
0.4%, the comprehensive grade of potassium sodium is about 5%, and the grade of aluminium sesquioxide is about 15%, and this ore properties are complicated, mineral constituent
The impurity contents such as many, thin, the ferrotitanium manganese of disseminated grain size are high（>1%）, it is China tantalum niobium lithium resource distinctive " black-spot ores " type.Due to
Barren rock natural talent is poor, has not both reached the requirement to Anhydrite raw material for the glass-ceramic industry, has also beaten and exploit product less than tantalum niobium lithium deposite
Position requires, and Mineral separation is difficult with synthetical recovery, is therefore reasonably developed always and appropriate process, except minority is used
Outer in hole of paving the way, fill out, the overwhelming majority is considered as solid waste heap and abandons, and not only causes the serious waste of mineral resources, also can
Bring serious harm to environment of mining area and perimeter security.
Magnetic impurity is the maximum influence factor of tantalum niobium concentrate barren rock comprehensive reutilization, by the application of the present invention, magnetic
Impurity is able to high efficiency separation, removal.After magnetic separation remove impurity, joint " magnetic fluid separation-gravity treatment-flotation " technological process, obtain lithium long
The mineral products such as stone powder, lepidolite fine ore, tantalum-niobium concentrate powder, the content of the ferrotianium manganese magnetic impurity of main mine product is reduced to<
0.1% is 0.09%, and ferrum clearance reaches more than 73%, far above level of the same trade.
The present invention has greatly economic benefit and social enviroment protection benefit, and joint magnetic separation process removes the ore deposit after magnetic impurity
Value of the product cost.
The inventive method method, with Ta Nb tailings and/or tantalum niobium ettle as raw material, through broken, screening, in order to improve
Take the efficiency of separation, material after screening carries out ball milling activation with ball mill device, and general ball milling activation number picks up hour, makes tantalum
It can be tantalum niobium gravity treatment mineral material that niobium mineral pellet is milled to about 200 mesh, or Ta Nb tailings and/or tantalum niobium ettle are passed through
After ore grinding screening, ferrum removing impurities is removed in advance using wet type permanent magnet low intensity magnetic separation, then through permanent-magnet concentration iron dross removing.Permanent-magnet concentration controls magnetic
Magnetic pole surfaces magnetic field intensity H=6000-26000A/m when selecting, the specific susceptibility X of tcrude ore and barren rock mineral grain0>38×
10-6cm3/ g is ferromagnetism iron mineral.So can be cleaner except iron mineral；Then the inventive method carries out sorting and removes successively again
Miscellaneous.
Removed after the magnetic impurity in tantalum niobium ettle using the inventive method, obtain lepidolite breeze through flotation and lithium is long
Stone powder, described flotation is typically to use FX150 type hydrocyclone or the rotation of FX250 type waterpower using hydraulic cyclone sorting process
Stream device；Described FX150 type hydrocyclone main technologic parameters are：Diameter 150mm, feed pressure 0.08-0.3MPa, are processed
Ability 14-35m3/h, 20-74 μm of partition size；Described FX250 type hydrocyclone main technologic parameters are：Diameter
250mm, feed pressure 0.06-0.3MPa, disposal ability 40-80m3/h, 40-100 μm of partition size.By lepidolite breeze and lithium
Feldspar powder breeze carries out filtering sorting respectively, obtains lepidolite fine ore and lithium feldspar concentrate powder.
Its each primary chemical composition reaches the lepidolite fine ore being separated using the invention described above method after testing
As following table content（wt%）, table 1：
| Li2O | K2O | Na2O | AL2O3 | SiO2 | Fe2O3 | Rb2O | Cs2O |
| 5.6 | 10.76 | 0.59 | 23.80 | 51.74 | 0.16 | 1.74 | 0.35 |
Explanation：Each Main chemical component content in lepidolite fine ore is all higher as can be seen from Table 1, can reach lepidolite
Extract the relevant requirement that raw material uses.
The lithium feldspar concentrate powder prepared using the inventive method, reaches the certain content of lithium oxide and the oxidation of rower requirement
High-quality Anhydrite containing the lithium breeze that potassium, sodium oxide content are high and ilmenite ores content is low requires, and lithium feldspar concentrate powder reclaims
Rate is more than more than 96%, exceedes domestic industry level.
The same tantalum-niobium concentrate response rate reaches more than 88.5%.Main component % of tantalum-niobium concentrate：Ta2O530.98, Nb2O5
17.94, Fe2O30.69, TiO20.13, Al2O343.62, SiO29.80, all reach rower requirement.Can from above-mentioned enforcement
Go out, the method removing magnetic impurity in tantalum niobium ettle using the joint magnetic separation of the present invention, it goes magnetic percentage of admixture high, particularly
Irony clearance reaches more than 70%, and the response rate of tantalum niobium concentrate resource product is higher, recyclable tantalum-niobium concentrate powder, lepidolite fine ore
And the powder of feldspar concentrate containing lithium etc..
Claims (8)
1. a kind of method that utilization joint magnetic separation removes magnetic impurity in tantalum niobium ettle, with tantalum niobium ettle as raw material, adopts
Magnetic selection method, by Ta Nb tailings and/or tantalum niobium ettle after ore grinding screening, removes ferrum in advance using wet type permanent magnet low intensity magnetic separation and takes off
Miscellaneous, obtain tantalum niobium gravity treatment mineral material, it is characterized in that tantalum niobium gravity treatment mineral material through joint magnetic selection method separation magnetic and non magnetic ore deposit
Material, then through magnetic separation-gravity treatment-joint flotation technology, extracts tantalum niobium concentrate resource product；Described resource product includes lithium Anhydrite
Powder, lepidolite fine ore, tantalum-niobium concentrate powder；
Described joint magnetic separation is followed successively by permanent-magnet concentration-middle magnetic magnetic separation-magnetic separator three stages of magnetic separation technique respectively.
2. the method that a kind of utilization joint magnetic separation according to claim 1 removes magnetic impurity in tantalum niobium ettle, it is special
Levy be described joint magnetic separation to ore deposit environment be control tantalum niobium gravity treatment mineral material ore pulp design effluent concentration be 25-35Wt%,
Mill slurry fineness -0.074mm or 200-220 mesh>60%, it is 75-80t/ hour to ore deposit efficiency.
3. the method that a kind of utilization joint magnetic separation according to claim 1 removes magnetic impurity in tantalum niobium ettle, it is special
Levying is the permanent-magnet concentration of described joint magnetic separation, is to carry out wet type permanent magnet low intensity magnetic separation using counter-current magnetic separator, by tantalum niobium gravity treatment mineral
Most ferromagnetism titaniums in material ore pulp, ferrum, mangana matter separate, remove, and exclusion strongly magnetic mineral is to tantalum niobium concentrate resource product
The impact that gravity treatment is reclaimed.
4. the method that a kind of utilization joint magnetic separation according to claim 1 removes magnetic impurity in tantalum niobium ettle, it is special
Levy be the middle magnetic magnetic separation of described joint magnetic separation and magnetic separator be carried out using pulsating high gradient magnetic separator with vertical ring in, strong magnetic magnetic
Choosing, separates magnetic and non magnetic ore, reduce titanium, ferrum, manganese magnetic with containing tantalum, the microlite of niobium, pyrochlore non magnetic ore
Interference in re-selection procedure, controls the impact to Muscovitum, feldspar concentrate Product recycling for the magnetic mineral.
5. the method that a kind of utilization joint magnetic separation according to claim 1 removes magnetic impurity in tantalum niobium ettle, it is special
Levy be the permanent-magnet concentration of described joint magnetic separation-middle magnetic magnetic separation-magnetic separator magnetic plant be respectively permanent-magnet concentration be HCT-
1050 counter-current magnetic separators, and middle magnetic magnetic separation-magnetic separator device is SLon-1500 pulsating high gradient magnetic separator with vertical ring.
6. the method that a kind of utilization joint magnetic separation according to claim 1 and 2 removes magnetic impurity in tantalum niobium ettle, its
The joint magnetic separation that feature is described is before permanent-magnet concentration, tantalum niobium gravity treatment mineral material is carried out ore grinding screening or ball milling, then leads to
Cross high frequency shale shaker screening, pass through spiral classifier after screening according to the grading of ore pulp, feed accordingly by different granularities
Permanent magnetic separator carry out magnetic separation remove magnetic impurity.
7. the method that a kind of utilization joint magnetic separation according to claim 1 or 6 removes magnetic impurity in tantalum niobium ettle, its
Feature be described enter after permanent-magnet concentration in magnetic concentration equipment, carry out magnetic fluid and separate, sub-elect magnetic ore pulp and non magnetic
Ore pulp, feeds different gravity treatment sets respectively, and magnetic ore pulp obtains tantalum-niobium concentrate powder after gravity treatment, and Tailings Slurry enters buffering
Pond, obtains circulation clear water finally by water circulation system and is used for cyclic production；And sewage obtains bed material sand after precipitation filter pressing, use
In building material, ceramic bed material；And concentrated after non magnetic ore pulp gravity treatment, then carry out magnetic separator.
8. the method that a kind of utilization joint magnetic separation according to claim 1 and 2 removes magnetic impurity in tantalum niobium ettle, its
Feature is magnetic pole surfaces magnetic field intensity H=6000-26000A/m when described permanent-magnet concentration controls magnetic separation, tantalum niobium gravity treatment mineral material
The specific susceptibility of grain is X0>38×10-6cm3/g.
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Application publication date: 20170208 |