CN108787158A - The recycling beneficiation method of fine- disseminated ore in a kind of uranium-bearing polymetallic ore - Google Patents
The recycling beneficiation method of fine- disseminated ore in a kind of uranium-bearing polymetallic ore Download PDFInfo
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- CN108787158A CN108787158A CN201810493907.4A CN201810493907A CN108787158A CN 108787158 A CN108787158 A CN 108787158A CN 201810493907 A CN201810493907 A CN 201810493907A CN 108787158 A CN108787158 A CN 108787158A
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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
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- B03B9/00—General arrangement of separating plant, e.g. flow sheets
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Abstract
The present invention provides a kind of recycling beneficiation methods of fine- disseminated ore in uranium-bearing polymetallic ore, the described method comprises the following steps：(1) uranium-bearing polymetallic ore is thrown into the thin mud rough concentrate that tail obtains through gravity treatment and carries out adverse current magnetic concentration working, obtain iron ore concentrate and magnetic concentration working tailing；(2) by obtained magnetic concentration working tailing, concentrated, confection and bulk flotation obtain uranium Biobium rare-earth bulk concentrate.The present invention develops a kind of technique of preparing efficiently separating enrichment microfine betafite and rare-earth mineral from low-grade uranium-bearing thin mud for the first time, both the rate of recovery of valuable mineral had been improved, the content of microfine radioactive mineral and the pollution to environment in tailing are also significantly reduced.
Description
Technical field
The invention belongs to uranium ore ore dressing field, the recycling beneficiation method more particularly to one kind that are related to a kind of fine- disseminated ore contain
The recycling beneficiation method of fine- disseminated ore in uranium polymetallic ore.
Background technology
Shaanxi Province of China contains in somewhere one based on uranium, niobium and lead ore, altogether (companion) have gold, silver, bismuth, cadmium, barium strontium and
The ultra-large type Hard Rock-type uranium deposit of the mineral products such as rare earth has the spy that scale is big, mineral are more, grade is low, buried depth is shallow and easily exploits
Point, uranium bearing mineral are mainly betafite, and rare-earth mineral is mainly cerine and monazite.Since deposit surface weathering is more serious
And betafite, cerine and monazite are easy argillization mineral, part uranium-bearing and mineral containing rare earth are not in shattering process
It can avoid entering in thin mud, this part microfine valuable mineral can generally enter in tailing during tail is thrown in gravity treatment, once
There is R&D institution to carry out ore dressing recovery test to it using gravitational separation equipments such as shaking table, suspended vibrating concentrating machine with conical surface and Nelsons, but
Only 3-4 times of concentrate concentration ratio and operation recovery only has 30% or so, recovering effect is undesirable, influences recycled in its entirety rate.
CN 107805726A disclose a kind of Heap Leaching of Uranium Ore-leaching joint water and control method, to the thin mud isolated
It is handled by the way of dense-leaching-filtration washing.Although it provides a kind of method of processing thin mud, its
It is relatively low to handle obtained leached mud uranium grade, and a large amount of acid can be used in processing procedure, and it is useless to generate a large amount of processing
Water increases pollution risk and treatment cost to environment.
Therefore, how to provide that recovering effect is good and what risk of environmental pollution was low is directed to microfine betafite and rare-earth mineral
Efficient beneficiation method the problem of being urgent need to resolve.
Invention content
The radioactivity thin mud generated during comminution-gravity treatment throws tail for existing low-grade more metal Hard Rock-type uranium ores
The problem of removal process, the present invention provides a kind of recycling beneficiation methods of fine- disseminated ore in uranium-bearing polymetallic ore.This
The invention recycling beneficiation method, had both improved the recycled in its entirety rate of uranium and rare earth, and had also effectively reduced the radioactivity of tailing
With the pollution to environment.
For this purpose, the present invention uses following technical scheme：
The present invention provides a kind of recycling beneficiation methods of fine- disseminated ore in uranium-bearing polymetallic ore, and the method includes following
Step：
(1) uranium-bearing polymetallic ore is thrown into the thin mud rough concentrate that tail obtains through gravity treatment and carries out adverse current magnetic concentration working, obtain iron essence
Mine and magnetic concentration working tailing；
(2) by magnetic concentration working tailing that step (1) obtains, to obtain uranium Biobium rare-earth mixed for concentrated, confection and bulk flotation
Close concentrate.
Heretofore described " first ", " second ", " third " and " the 4th " etc., it is only for from name on to material into
Row is distinguished, and there is no other meanings.
In the present invention, the uranium-bearing polymetallic ore is based on uranium, niobium and lead ore, and (companion) has gold, silver, bismuth, cadmium, barium strontium altogether
With the mineral products such as rare earth, valuable mineral content≤10wt%.
In the present invention, the fine- disseminated ore refers to size distribution in the thin mud rough concentrate that uranium-bearing polymetallic ore is obtained through gravity treatment
In 20 μm of mineral below, including betafite and rare-earth mineral.
In the present invention, the uranium-bearing polymetallic ore obtains coarse grain rough concentrate, thin mud rough concentrate and tailing through gravity treatment, wherein
Most of valuable mineral enters in coarse grain rough concentrate.The method of the invention is recycled for thin mud rough concentrate therein
The method of ore dressing, the rate of recovery are calculated for thin mud rough concentrate.
It is used as currently preferred technical solution below, but not as the limitation of technical solution provided by the invention, passes through
Following technical scheme can preferably reach and realize the technical purpose and advantageous effect of the present invention.
As currently preferred technical solution, the fine- disseminated ore refers to size distribution in 20 μm of mineral below.
Preferably, further include being carried out to uranium-bearing polymetallic ore before uranium-bearing polymetallic ore being carried out gravity treatment throwing tail in step (1)
It is crushed, sieves and sizes mixing.
Preferably, it is described it is broken include using any one in jaw crusher, gyratory crusher or high-pressure roller mill or
At least two are handled, and preferably first jaw crusher and gyratory crusher are used to be handled, then with high-pressure roller mill into
Row processing.
Preferably, material of the output grain size less than 4mm after the screening.
Preferably, -0.074mm grades material content < 20wt% in the material of output after the screening.
Preferably, it is described size mixing after the pulp density that controls be 20wt%~40wt%.
As currently preferred technical solution, step (1) gravity treatment is thrown tail and is carried out using spiral concentrator.
Preferably, the tailing yield that tail is thrown in step (1) gravity treatment is 45%~55%.
Preferably, average particle size≤20 μm of step (1) the thin mud rough concentrate.
Preferably, a concentration of 6wt%~10wt% of step (1) the thin mud rough concentrate.
As currently preferred technical solution, step (1) the adverse current magnetic concentration working is in adverse current type permanent magnetism magnet drum
It carries out.
Preferably, Surface field intensity >=300GS of step (1) the adverse current magnetic concentration working, preferably 1000GS~
1500GS。
In the present invention, adverse current low intensity magnetic separation operation is carried out to thin mud rough concentrate and is to remove the overwhelming majority in thin mud rough concentrate
Micro fine particle magnetite, to ensure the grade of the uranium Biobium rare-earth bulk concentrate finally obtained.
Preferably, the grade >=57wt% of step (1) described iron ore concentrate.
Preferably, a concentration of 4wt%~6wt% of step (1) the magnetic concentration working tailing.
As currently preferred technical solution, step (2) it is described concentration include with concentrator and/or taper it is dense struggle against into
Row.
Preferably, a concentration of 10wt%~15wt% of step (2) underflow being concentrated to give.
As currently preferred technical solution, step (2) described confection is：By the underflow being concentrated to give and flotation
Bulk flotation is carried out after medicament mixing.
Preferably, the mixing is carried out by the way of stirring.
Preferably, described be blended in agitating device carries out, and is preferably carried out successively in three agitating devices.
Preferably, in the agitating device wheel rotation wire velocity control of impeller in 7.8m/s~8.3m/s.
In the present invention, in the mixed process of underflow and floating agent, the wheel speed of agitator is controlled in the range,
If rotating speed is too low, the rate of recovery of final products and grade can be made to decline；If rotating speed is excessively high, the rate of recovery of final products can be made to decline
And energy consumption increases, thus the grade of the final products obtained in the range and the rate of recovery are more excellent.
Preferably, the floating agent includes gangue selective flocculant, activator, pH regulators, collecting agent and blistering
Agent.
Preferably, when be blended in carried out successively in three agitating devices when, in first agitating device add gangue choosing
Selecting property flocculant adds activator in second agitating device, and pH regulators, collecting agent are added in third agitating device
And foaming agent.
Preferably, the pH adjusting agent includes sulfuric acid.
Preferably, the collecting agent includes sylvite collecting agent.
Preferably, the foaming agent includes MIBC and/or BK204.
Preferably, the additive amount of the gangue selective flocculant is 0~300g/t.
Preferably, the additive amount of the activator is 0~1000g/t.
Preferably, the additive amount of the pH adjusting agent is 0~18kg/t.
Preferably, the additive amount of the collecting agent is 0~1000g/t.
Preferably, the additive amount of the foaming agent is 0~100g/t.
Preferably, the incorporation time≤5min.
As currently preferred technical solution, step (2) described bulk flotation includes at least 1 roughing flotation, at least 2
It is secondary selected and at least 1 time is scanned.
Preferably, step (2) described bulk flotation be 1 roughing flotation, 2 times it is selected and 1 time is scanned.
Preferably, step (2) described bulk flotation specifically includes following steps：
(a) pending ore pulp is subjected to roughing flotation, obtains the first concentrate and the first tailing；
(b) the first concentrate progress at least 2 flotation that step (a) obtains are selected, obtain uranium Biobium rare-earth bulk concentrate；
(c) the first tailing that step (a) obtains, which is scanned to obtain, scans tailing.
Preferably, the scavenger concentrate return to step (a) scanned in step (c) is floated together with pending ore pulp
Select roughing.
It is in the step (b) that 2 flotation of progress of the first concentrate is selected as currently preferred technical solution, it obtains
Uranium Biobium rare-earth bulk concentrate.
Specifically include following steps：
The first concentrate progress first time flotation that step (a) obtains is selected, obtains the second concentrate and the second tailing；
Second concentrate carries out that second of flotation is selected obtains uranium Biobium rare-earth bulk concentrate and third tailing；
Second tailing is scanned to obtain the 4th concentrate and the 4th tailing.
Preferably, it is selected to carry out first time flotation together with the first concentrate for the third tailing return.
Preferably, the 4th concentrate return to step (2) carries out confection processing.
Preferably, the tailing of scanning in the 4th tailing and step (c) is mixed to get total tailing, wherein uranium grade is
0.004wt%~0.006wt%, niobium pentaoxide grade are 0.018wt%~0.022wt%, the product of total amount of the rare earth oxide
Position 0.045wt%~0.055wt%.
As currently preferred technical solution, in the uranium Biobium rare-earth bulk concentrate uranium grade be 0.12wt%~
0.20wt%, niobium pentaoxide grade are 0.25wt%~0.30wt%, the grade of total amount of the rare earth oxide be 0.6wt%~
0.8wt%.
Preferably, the uranium rate of recovery of the uranium Biobium rare-earth bulk concentrate is 60%~65%, the niobium pentaoxide rate of recovery
45%~50%, rare earth oxide overall recovery is 50%~60%.
As currently preferred technical solution, the described method comprises the following steps：
(1) uranium-bearing polymetallic ore be crushed, sieved, sized mixing and throw obtained average particle size≤20 μm of tail and dense with gravity treatment
Degree is the thin mud rough concentrate of 6wt%~10wt%, and thin mud rough concentrate is carried out adverse current magnetic separation work in adverse current type permanent magnetism magnet drum
Industry obtains the iron ore concentrate of grade >=57wt% and the magnetic concentration working tailing of a concentration of 4wt%~6wt%；
Wherein, it is broken for first jaw crusher and gyratory crusher being used to be handled, then at high-pressure roller mill
Reason, output grain size is less than the material of 4mm after screening, and the pulp density controlled after sizing mixing is 20wt%~40wt%, gravity treatment
It throws tail to carry out using spiral concentrator, the tailing yield that tail is thrown in gravity treatment is 45wt%~55wt%, the surface of adverse current magnetic concentration working
Magnetic field intensity is 1000GS~1500GS；
(2) magnetic concentration working tailing concentrator and/or the dense bucket of taper that step (1) obtains are carried out dense, obtained dense
Degree is the underflow of 10wt%~15wt%, and the underflow being concentrated to give is mixed with floating agent in three agitating devices successively
It closes；
Mixed ore pulp carries out roughing flotation, obtains the first concentrate and the first tailing, and the first concentrate carries out floating for the first time
It selects selected, obtains the second concentrate and the second tailing, the first tailing, which is scanned to obtain, scans tailing and scavenger concentrate, scavenger concentrate
Return carries out roughing flotation together with mixed ore pulp；
Second concentrate, second of flotation of progress is selected to obtain uranium Biobium rare-earth bulk concentrate and third tailing, and third tailing returns
It is selected with first time flotation is carried out together with the first concentrate；
Second tailing is scanned to obtain the 4th concentrate and the 4th tailing, and the return of the 4th concentrate is mixed with floating agent
It closes, the 4th tailing and scans tailing and be mixed to get total tailing；
Wherein, the wheel rotation wire velocity control of impeller is stirred in 7.8m/s~8.3m/s at first in agitating device
Gangue selective flocculant is added in device, is added activator in second agitating device, is added in third agitating device
Add pH regulators, collecting agent and foaming agent, incorporation time≤5min.
Compared with prior art, the invention has the advantages that：
(1) the method for the invention first uses low intensity magnetic separation to remove most magnetic iron ores before flotation uranium and rare-earth mineral,
It avoids magnetic iron ore from entering in final uranium Biobium rare-earth bulk concentrate, influences uranium Biobium rare-earth bulk concentrate quality, also reduce follow-up
The consumption of the acid of uranium Biobium rare-earth bulk flotation system；
(2) present invention develops for the first time is selectively inhaled with selective flocculation-high intensity stirring reinforcing medicament with mineral surfaces
It is attached for the suitable microfine betafite of characteristic and the mixing direct floatation process flow of rare-earth mineral, meet the more flotation of floating few suppression
Principle, foam viscosity is moderate, middling recurrence amount is few, and is easy to regulate and control；
(3) uranium grade is 0.12wt%~0.20wt% in the uranium Biobium rare-earth bulk concentrate that the method for the invention obtains,
Niobium pentaoxide grade is 0.25wt%~0.30wt%, and the grade of total amount of the rare earth oxide is 0.6wt%~0.8wt%, uranium
The rate of recovery is 60%~65%, and the niobium pentaoxide rate of recovery 45%~50%, rare earth oxide overall recovery are 50%~60%；
The concentration ratio of uranium is 10~15 times in bulk concentrate, is stripped of the calcium mineral of 90wt% or so, microfine betafite and dilute
Native mineral have obtained effective enriching and recovering, significantly reduce follow-up hydrometallurgy SEPARATION OF URANIUM, niobium and rare earth production cost.
Description of the drawings
Fig. 1 is the flow diagram of the recycling beneficiation method of fine- disseminated ore in uranium-bearing polymetallic ore in the embodiment of the present invention 1.
Specific implementation mode
For the present invention is better described, it is easy to understand technical scheme of the present invention, below further specifically to the present invention
It is bright.But following embodiments is only the simple example of the present invention, does not represent or limit the scope of the present invention, this
Invention protection domain is subject to claims.
Specific embodiment of the invention part provides a kind of recycling beneficiation method of fine- disseminated ore in uranium-bearing polymetallic ore,
It the described method comprises the following steps：
(1) uranium-bearing polymetallic ore is thrown into the thin mud rough concentrate that tail obtains through gravity treatment and carries out adverse current magnetic concentration working, obtain iron essence
Mine and magnetic concentration working tailing；
(2) by magnetic concentration working tailing that step (1) obtains, to obtain uranium Biobium rare-earth mixed for concentrated, confection and bulk flotation
Close concentrate.
It is used as currently preferred technical solution below, but not as the limitation of technical solution provided by the invention, passes through
Following technical scheme can preferably reach and realize the technical purpose and advantageous effect of the present invention.
As currently preferred technical solution, the fine- disseminated ore refers to size distribution in 20 μm of mineral below, grain
Diameter can be 18 μm, 16 μm, 14 μm, 12 μm, 10 μm or 8 μm etc., it is not limited to cited numerical value, in the numberical range other
Unrequited numerical value is equally applicable.
Preferably, further include being carried out to uranium-bearing polymetallic ore before uranium-bearing polymetallic ore being carried out gravity treatment throwing tail in step (1)
It is crushed, sieves and sizes mixing.
Preferably, it is described it is broken include using any one in jaw crusher, gyratory crusher or high-pressure roller mill or
At least two are handled, and preferably first jaw crusher and gyratory crusher are used to be handled, then with high-pressure roller mill into
Row processing.
Preferably, after the screening output grain size be less than 4mm material, such as grain size be smaller than 4mm, 3.8m, 3.6mm,
3.4mm, 3.2mm, 3mm or 2.5mm etc., it is not limited to cited numerical value, other interior unrequited numbers of the numberical range
It is worth equally applicable.
Preferably, -0.074mm grades material content < 20wt% in the material of output after the screening, such as 18wt%,
16wt%, 14wt%, 12wt%, 10wt%, 8wt% or 6wt% etc., it is not limited to cited numerical value, the numerical value model
Other unrequited numerical value are equally applicable in enclosing.
Preferably, it is described size mixing after the pulp density that controls be 20wt%~40wt%, such as 20wt%,
23wt%, 25wt%, 27wt%, 30wt%, 33wt%, 35wt%, 37wt% or 40wt% etc., it is not limited to cited
Numerical value, other unrequited numerical value are equally applicable in the numberical range.
As currently preferred technical solution, step (1) gravity treatment is thrown tail and is carried out using spiral concentrator, such as adopts
With spiral concentrator FG-7.
Preferably, the tailing yield that tail is thrown in step (1) gravity treatment is 45%~55%, such as 45%, 47%, 50%,
53% or 55% etc., it is not limited to cited numerical value, other interior unrequited numerical value of the numberical range are equally applicable.
Preferably, average particle size≤20 μm of step (1) the thin mud rough concentrate, for example, 18 μm, 16 μm, 14 μm, 12 μm,
10 μm or 8 μm etc., it is not limited to cited numerical value, other interior unrequited numerical value of the numberical range are equally applicable.
Preferably, a concentration of 6wt%~10wt% of step (1) the thin mud rough concentrate, such as 6wt%, 6.3wt%,
6.5wt%, 6.7wt%, 7wt%, 7.3wt%, 7.5wt%, 7.7wt%, 8wt%, 8.5wt%, 9wt%, 9.5wt% or
10wt% etc., it is not limited to cited numerical value, other interior unrequited numerical value of the numberical range are equally applicable.
As currently preferred technical solution, step (1) the adverse current magnetic concentration working is in adverse current type permanent magnetism magnet drum
It carries out.
Preferably, Surface field intensity >=300GS of step (1) the adverse current magnetic concentration working, such as 900GS, 950GS,
1000GS, 1050GS, 1100GS, 1150GS, 1200GS, 1500GS, 2000GS or 2500GS etc., it is not limited to cited
Numerical value, other unrequited numerical value are equally applicable in the numberical range, preferably 1000GS~1500GS.
Preferably, the grade >=57wt% of step (1) described iron ore concentrate.
Preferably, a concentration of 4wt%~6wt% of step (1) the magnetic concentration working tailing, such as 4wt%, 4.5wt%,
5wt%, 5.5wt% or 6wt% etc., it is not limited to cited numerical value, other interior unrequited numerical value of the numberical range
It is equally applicable.
As currently preferred technical solution, step (2) it is described concentration include with concentrator and/or taper it is dense struggle against into
Row.
Preferably, a concentration of 10wt%~15wt% of step (2) underflow being concentrated to give, such as 10wt%,
11wt%, 12wt%, 13wt%, 14wt% or 15wt% etc., it is not limited to cited numerical value, in the numberical range its
His unrequited numerical value is equally applicable.
As currently preferred technical solution, step (2) described confection is：By the underflow being concentrated to give and flotation
Bulk flotation is carried out after medicament mixing.
Preferably, the mixing is carried out by the way of stirring.
Preferably, described be blended in agitating device carries out, and is preferably carried out successively in three agitating devices.
Preferably, in the agitating device wheel rotation wire velocity control of impeller in 7.8m/s~8.3m/s, such as
7.8m/s, 7.9m/s, 8m/s, 8.1m/s, 8.2m/s or 8.3m/s etc., it is not limited to cited numerical value, the numerical value model
Other unrequited numerical value are equally applicable in enclosing.
Preferably, the floating agent includes gangue selective flocculant, activator, pH regulators, collecting agent and blistering
Agent.Wherein, it includes that gangue selective flocculant XY-J and/or gangue select that gangue selective flocculant is typical but non-limiting
Property flocculant XY-C；Typical but non-limiting activator includes activator XY-L.
Preferably, when be blended in carried out successively in three agitating devices when, in first agitating device add gangue choosing
Selecting property flocculant adds activator in second agitating device, and pH regulators, collecting agent are added in third agitating device
And foaming agent.
Preferably, the pH adjusting agent includes sulfuric acid.
Preferably, the collecting agent includes sylvite collecting agent, such as collecting agent CB.
Preferably, the foaming agent includes MIBC and/or BK204.
Preferably, the additive amount of the gangue selective flocculant be 0-300g/t, such as 5g/t, 10g/t, 50g/t,
70g/t, 100g/t, 150g/t, 200g/t, 250g/t or 300g/t etc., it is not limited to cited numerical value, the numerical value model
Other unrequited numerical value are equally applicable in enclosing.
Preferably, the additive amount of the activator be 0~1000g/t, such as 10g/t, 50g/t, 100g/t, 200g/t,
300g/t, 400g/t, 500g/t, 600g/t, 700g/t, 800g/t, 900g/t or 1000g/t etc., it is not limited to listed
The numerical value of act, other interior unrequited numerical value of the numberical range are equally applicable.
Preferably, the additive amount of the pH adjusting agent be 0~18kg/t, such as 1kg/t, 3kg/t, 5kg/t, 7kg/t,
10kg/t, 13kg/t, 15kg/t or 18kg/t etc., it is not limited to cited numerical value, interior other of the numberical range do not arrange
The numerical value of act is equally applicable.
Preferably, the additive amount of the collecting agent be 0~1000g/t, such as 10g/t, 50g/t, 100g/t, 200g/t,
300g/t, 400g/t, 500g/t, 600g/t, 700g/t, 800g/t, 900g/t or 1000g/t etc., it is not limited to listed
The numerical value of act, other interior unrequited numerical value of the numberical range are equally applicable.
Preferably, the additive amount of the foaming agent is 0~100g/t, such as 10g/t, 20g/t, 30g/t, 40g/t, 50g/
T, 60g/t, 70g/t, 80g/t, 90g/t or 100g/t etc., it is not limited to cited numerical value, in the numberical range other
Unrequited numerical value is equally applicable.
Preferably, the incorporation time≤5min, such as 5min, 4min, 3min, 2min or 1min etc., but simultaneously not only limit
It is equally applicable in other unrequited numerical value in cited numerical value, the numberical range.
As currently preferred technical solution, step (2) described bulk flotation includes at least 1 roughing flotation, at least 2
Secondary selected and at least 1 time is scanned, number can be independently that 2 times, 3 times, 4 times, 5 times or 6 are inferior, it is not limited to cited
Numerical value, other unrequited numerical value are equally applicable in the numberical range.
Preferably, step (2) described bulk flotation be 1 roughing flotation, 2 times it is selected and 1 time is scanned.
Preferably, step (2) described bulk flotation specifically includes following steps：
(a) pending ore pulp is subjected to roughing flotation, obtains the first concentrate and the first tailing；
(b) the first concentrate progress at least 2 flotation that step (a) obtains are selected, obtain uranium Biobium rare-earth bulk concentrate；
(c) the first tailing that step (a) obtains, which is scanned to obtain, scans tailing.
(a) pending ore pulp is subjected to roughing flotation, obtains the first concentrate and the first tailing；
(b) the first concentrate progress at least 2 flotation that step (a) obtains are selected, obtain uranium Biobium rare-earth bulk concentrate；
(c) the first tailing that step (a) obtains, which is scanned to obtain, scans tailing；
Preferably, the scavenger concentrate return to step (a) scanned in step (c) is floated together with pending ore pulp
Select roughing.
It is in the step (b) that 2 flotation of progress of the first concentrate is selected as currently preferred technical solution, it obtains
Uranium Biobium rare-earth bulk concentrate.
Specifically include following steps：
The first concentrate progress first time flotation that step (a) obtains is selected, obtains the second concentrate and the second tailing；
Second concentrate carries out that second of flotation is selected obtains uranium Biobium rare-earth bulk concentrate and third tailing；
Second tailing is scanned to obtain the 4th concentrate and the 4th tailing.
Preferably, it is selected to carry out first time flotation together with the first concentrate for the third tailing return；
Preferably, the 4th concentrate return to step (2) carries out confection processing.
Preferably, the tailing of scanning in the 4th tailing and step (c) is mixed to get total tailing, wherein uranium grade is
0.004wt%~0.006wt%, niobium pentaoxide grade are 0.018wt%~0.022wt%, the product of total amount of the rare earth oxide
Position 0.045wt%~0.055wt%.
As currently preferred technical solution, in the uranium Biobium rare-earth bulk concentrate uranium grade be 0.12wt%~
0.20wt%, niobium pentaoxide grade are 0.25wt%~0.30wt%, the grade of total amount of the rare earth oxide be 0.6wt%~
0.8wt%.
Preferably, the uranium rate of recovery of the uranium Biobium rare-earth bulk concentrate is 60%~65%, the niobium pentaoxide rate of recovery
45%~50%, rare earth oxide overall recovery is 50%~60%.
As currently preferred technical solution, the described method comprises the following steps：
(1) uranium-bearing polymetallic ore be crushed, sieved, sized mixing and throw obtained average particle size≤20 μm of tail and dense with gravity treatment
Degree is the thin mud rough concentrate of 6wt%~10wt%, and thin mud rough concentrate is carried out adverse current magnetic separation work in adverse current type permanent magnetism magnet drum
Industry obtains the iron ore concentrate of grade >=57wt% and the magnetic concentration working tailing of a concentration of 4wt%~6wt%；
Wherein, it is broken for first jaw crusher and gyratory crusher being used to be handled, then at high-pressure roller mill
Reason, output grain size is less than the material of 4mm after screening, and the pulp density controlled after sizing mixing is 20wt%~40wt%, gravity treatment
It throws tail to carry out using spiral concentrator, the tailing yield that tail is thrown in gravity treatment is 45wt%~55wt%, the surface of adverse current magnetic concentration working
Magnetic field intensity is 1000GS~1500GS；
(2) magnetic concentration working tailing concentrator and/or the dense bucket of taper that step (1) obtains are carried out dense, obtained dense
Degree is the underflow of 10wt%~15wt%, and the underflow being concentrated to give is mixed with floating agent in three agitating devices successively
It closes；
Mixed ore pulp carries out roughing flotation, obtains the first concentrate and the first tailing, and the first concentrate carries out floating for the first time
It selects selected, obtains the second concentrate and the second tailing, the first tailing, which is scanned to obtain, scans tailing and scavenger concentrate, scavenger concentrate
Return carries out roughing flotation together with mixed ore pulp；
Second concentrate, second of flotation of progress is selected to obtain uranium Biobium rare-earth bulk concentrate and third tailing, and third tailing returns
It is selected with first time flotation is carried out together with the first concentrate；
Second tailing is scanned to obtain the 4th concentrate and the 4th tailing, and the return of the 4th concentrate is mixed with floating agent
It closes, the 4th tailing and scans tailing and be mixed to get total tailing；
Wherein, the wheel rotation wire velocity control of impeller is stirred in 7.8m/s~8.3m/s at first in agitating device
Gangue selective flocculant is added in device, is added activator in second agitating device, is added in third agitating device
Add pH regulators, collecting agent and foaming agent, incorporation time≤5min.
It is present invention typical case but non-limiting embodiment below：
Embodiment 1：
Present embodiments provide a kind of recycling beneficiation method of fine- disseminated ore in uranium-bearing polymetallic ore, the more metals of uranium-bearing
Mine is Shaanxi uranium niobium lead deposit, and based on uranium niobium lead, (companion) has the mineral products such as gold, silver, bismuth, cadmium, barium strontium, rare earth altogether, has
The characteristics of scale is big, mineral are more, grade is low, buried depth is shallow, easy exploitation.Niobium in ore is with uranium major part symbiosis in betafite
In, most of uranium bearing mineral combination is closer, and lead is mainly with galena output, and small part is with cerussite output, rare-earth mineral
Mainly cerine.
As shown in Figure 1, the described method comprises the following steps：
(1) after being handled uranium-bearing polymetallic ore raw ore jaw crusher and gyratory crusher, into high pressure roller mill
Machine and vibrating screen carry out closed circuit flow, obtain the material that undersize is -3mm release meshes；Using new after the material is sized mixing
Type coarse grain chute FG-7 carries out pre- throwing tail, throws tail yield 50%, the thin mud for obtaining coarse grain rough concentrate and a concentration of 8wt% is coarse-fine
Mine, coarse grain rough concentrate and thin mud rough concentrate are individually handled；
Thin mud rough concentrate is fed into adverse current type permanent magnetism magnet drum and carries out weak magnetic blanking iron, low intensity magnetic separation magnetic field intensity is
1200GS, obtains the magnetic concentration working tailing of the iron ore concentrate and a concentration of 4wt% of Iron grade 57%, and most magnetic iron ores are taken off
It removes；
(2) by the magnetic concentration working tailing that step (1) obtains feed concentrator carry out it is dense, control thickened underflow it is a concentration of
10wt% or so, thickened underflow are fed in three agitators successively as the bulk flotation of uranium rare earth to mine, three agitator middle periods
Wheel rotational line speed is 8.0m/s, and the gangue selective flocculant total 200g/t of XY-J and XY-C is added in first agitator, the
Activator XY-L 350g/t are added in two agitators, pH regulators-sulfuric acid 12kg/t, collecting is added in third agitator
Agent CB600g/t and foaming agent MIBC50g/t feeds flotation device after medicament and ore pulp fully act on and carries out roughing flotation, obtains
First concentrate and the first tailing；
The progress first time flotation of first concentrate is selected, obtains the second concentrate and the second tailing, the first tailing scan
To tailing and scavenger concentrate is scanned, scavenger concentrate comes back for roughing flotation；Second concentrate carries out that second of flotation is selected obtains
Uranium Biobium rare-earth bulk concentrate and third tailing, it is selected that the return of third tailing carries out first time flotation together with the first concentrate；Second
Tailing is scanned to obtain the 4th concentrate and the 4th tailing, and the return of the 4th concentrate is mixed with floating agent, the 4th tailing with
It scans tailing and is mixed to get total tailing.
Uranium grade 0.1835wt%, niobium pentaoxide grade in the finally obtained uranium Biobium rare-earth bulk concentrate of the present embodiment
0.2845wt%, total amount of the rare earth oxide (REO) grade 0.7152wt%, the uranium rate of recovery 64.15%, the niobium pentaoxide rate of recovery
47.52%, the REO rate of recovery 55.62% is stripped of 92.85% calcium mineral.
Embodiment 2：
Present embodiments provide a kind of recycling beneficiation method of fine- disseminated ore in uranium-bearing polymetallic ore, the more metals of uranium-bearing
Mine is uranium-bearing, rare earth, the iron polymetallic ore in Shaanxi somewhere, and ore bearing vein rock is mainly granite arteries and veins, uranium bearing mineral master in ore body
To be betafite, secondly be ulrichile and fergusonite, uranium bearing mineral is unevenly distributed, and is distributed in disseminated, granularity is very
Carefully, most of uranium bearing mineral symbiosis is close, forms aggregate, the main preservation of rare-earth mineral is in monazite, and iron is mainly with magnet
Mine form exists, lead mainly exists in the form of galena, and followed by cerussite, silver and cerussite Relationship Comparison are close.
It the described method comprises the following steps：
(1) after being handled uranium-bearing polymetallic ore raw ore jaw crusher and gyratory crusher, into high pressure roller mill
Machine and vibrating screen carry out closed circuit flow, obtain the material that undersize is -3mm release meshes；Using new after the material is sized mixing
Type coarse grain chute FG-7 carries out pre- throwing tail, throws tail yield 52%, the thin mud for obtaining coarse grain rough concentrate and a concentration of 8.5wt% is coarse-fine
Mine, coarse grain rough concentrate and thin mud rough concentrate are individually handled；
Thin mud rough concentrate is fed into adverse current type permanent magnetism magnet drum and carries out weak magnetic blanking iron, low intensity magnetic separation magnetic field intensity is
1200GS, obtains the magnetic concentration working tailing of the iron ore concentrate and a concentration of 5wt% of Iron grade 57%, and most magnetic iron ores are taken off
It removes；
(2) by the magnetic concentration working tailing that step (1) obtains feed concentrator carry out it is dense, control thickened underflow it is a concentration of
12wt% or so, thickened underflow are fed in three agitators successively as the bulk flotation of uranium rare earth to mine, three agitator middle periods
Wheel rotational line speed is 8.15m/s, and the gangue selective flocculant total 250g/t of XY-J and XY-C is added in first agitator, the
Activator XY-L 600g/t are added in two agitators, pH regulators-sulfuric acid 16g/t, collecting agent is added in third agitator
CB 640g/t and foaming agent BK204 80g/t feed flotation device after medicament and ore pulp fully act on and carry out roughing flotation, obtain
To the first concentrate and the first tailing；
The progress first time flotation of first concentrate is selected, obtains the second concentrate and the second tailing, the first tailing scan
To tailing and scavenger concentrate is scanned, scavenger concentrate comes back for roughing flotation；Second concentrate carries out that second of flotation is selected obtains
Uranium Biobium rare-earth bulk concentrate and third tailing, it is selected that the return of third tailing carries out first time flotation together with the first concentrate；Second
Tailing is scanned to obtain the 4th concentrate and the 4th tailing, and the return of the 4th concentrate is mixed with floating agent, the 4th tailing with
It scans tailing and is mixed to get total tailing.
Uranium grade 0.1756wt%, niobium pentaoxide grade in the finally obtained uranium Biobium rare-earth bulk concentrate of the present embodiment
0.2658wt%, total amount of the rare earth oxide (REO) grade 0.7542wt%, the uranium rate of recovery 65.65%, the niobium pentaoxide rate of recovery
48.65%, the REO rate of recovery 57.15% is stripped of 91% calcium mineral.
Embodiment 3：
Present embodiments provide a kind of recycling beneficiation method of fine- disseminated ore in uranium-bearing polymetallic ore, the more metals of uranium-bearing
Mine is uranium-bearing, thorium, niobium, the rare earth polymetallic ore in Shaanxi somewhere, and ore bearing vein rock is mainly migmatic pegmatite arteries and veins, uranium content in ore body
It changes greatly, and size distribution is uneven, is distributed in disseminated, 60% uranium bearing mineral concentrates in+0.074mm grades, contains
Uranium mineral has betafite, Chang Baikuang, broggerite, niobium-containing mineral to be distributed mainly in betafite, next is distributed in brown yttrium niobium
In mine and niobium rutile, rare-earth mineral is mainly cerine, and small part is monazite.Lead minerals is mainly galena, contains iron ore
Object is mainly magnetic iron ore, followed by pyrite and limonite, and galena, magnetic iron ore and pyrite disseminated grain size are thicker, uranium-bearing, niobium
Mineral are relatively thin, rare-earth mineral is most thin.
It the described method comprises the following steps：
(1) after being handled uranium-bearing polymetallic ore raw ore jaw crusher and gyratory crusher, into high pressure roller mill
Machine and vibrating screen carry out closed circuit flow, obtain the material that undersize is -3mm release meshes；Using new after the material is sized mixing
Type coarse grain chute FG-7 carries out pre- throwing tail, throws tail yield 49%, the thin mud for obtaining coarse grain rough concentrate and a concentration of 10wt% is coarse-fine
Mine, coarse grain rough concentrate and thin mud rough concentrate are individually handled；
Thin mud rough concentrate is fed into adverse current type permanent magnetism magnet drum and carries out weak magnetic blanking iron, low intensity magnetic separation magnetic field intensity is
1500GS, obtains the magnetic concentration working tailing of the iron ore concentrate and a concentration of 5.5wt% of Iron grade 55%, and most magnetic iron ores are taken off
It removes；
(2) by the magnetic concentration working tailing that step (1) obtains feed concentrator carry out it is dense, control thickened underflow it is a concentration of
12wt% or so, thickened underflow are fed in three agitators successively as the bulk flotation of uranium rare earth to mine, three agitator middle periods
Wheel rotational line speed is 8.2m/s, and the gangue selective flocculant total 300g/t of XY-J and XY-C is added in first agitator, the
Activator XY-L480g/t is added in two agitators, pH regulators-sulfuric acid 10kg/t, collecting agent is added in third agitator
CB 450g/t and foaming agent MIBC 45g/t feed flotation device after medicament and ore pulp fully act on and carry out roughing flotation, obtain
First concentrate and the first tailing；
The progress first time flotation of first concentrate is selected, obtains the second concentrate and the second tailing, the first tailing scan
To tailing and scavenger concentrate is scanned, scavenger concentrate comes back for roughing flotation；Second concentrate carries out that second of flotation is selected obtains
Uranium Biobium rare-earth bulk concentrate and third tailing, it is selected that the return of third tailing carries out first time flotation together with the first concentrate；Second
Tailing is scanned to obtain the 4th concentrate and the 4th tailing, and the return of the 4th concentrate is mixed with floating agent, the 4th tailing with
It scans tailing and is mixed to get total tailing.
Uranium grade 0.1842wt%, niobium pentaoxide grade in the finally obtained uranium Biobium rare-earth bulk concentrate of the present embodiment
0.2765wt%, total amount of the rare earth oxide (REO) grade 0.7242wt%, the uranium rate of recovery 65.26%, the niobium pentaoxide rate of recovery
48.66%, the uranium Biobium rare-earth bulk concentrate of the REO rate of recovery 56.78%, is stripped of 93.15% calcium mineral.
Embodiment 4：
A kind of recycling beneficiation method of fine- disseminated ore in uranium-bearing polymetallic ore is present embodiments provided, the method is with reference to real
Method in example 1 is applied, is differed only in：Low intensity magnetic separation magnetic field intensity is 1000GS in step (1).
The iron ore concentrate Iron grade that the present embodiment is handled is close with embodiment 1 with iron recovery.
Comparative example 1：
This comparative example provides a kind of synthetical recovery beneficiation method of uranium-bearing polymetallic ore, and the method is with reference to embodiment 1
Middle method, differs only in：The magnetic separation carried out in step (1) is fair current magnetic separation.
This comparative example can make the uranium content in iron ore concentrate significantly raised due to using fair current magnetic separation to thin mud rough concentrate.
The method of the invention is can be seen that with comparative example based on the above embodiments first to adopt before flotation uranium and rare-earth mineral
Most magnetic iron ores are removed with low intensity magnetic separation, avoids magnetic iron ore from entering in final uranium Biobium rare-earth bulk concentrate, it is dilute to influence uranium niobium
Native bulk concentrate quality also reduces the consumption of the acid of follow-up uranium Biobium rare-earth bulk flotation system.The uranium Biobium rare-earth finally obtained
Uranium grade is 0.12wt%~0.20wt% in bulk concentrate, and niobium pentaoxide grade is 0.25wt%~0.30wt%, rare earth
The grade of oxide aggregate is 0.6wt%~0.8wt%, and the uranium rate of recovery is 60%~65%, the niobium pentaoxide rate of recovery 45%
~50%, rare earth oxide overall recovery is 50%~60%；The concentration ratio of uranium is 10~15 times in bulk concentrate, is stripped of
The calcium mineral of 90wt% or so, microfine betafite and rare-earth mineral have obtained effective enriching and recovering, after significantly reducing
The production cost of continuous hydrometallurgy SEPARATION OF URANIUM, niobium and rare earth.
Applicant declares, and the present invention illustrates the detailed applications method of the present invention by above-described embodiment, but the present invention is simultaneously
It is not limited to above-mentioned detailed applications method, that is, does not mean that the present invention has to rely on above-mentioned method detailed and could implement.Affiliated skill
The technical staff in art field is it will be clearly understood that any improvement in the present invention, to the equivalence replacement and auxiliary of products material of the present invention
The addition of ingredient, the selection etc. of concrete operations condition and mode, all fall within protection scope of the present invention and the open scope.
Claims (10)
1. the recycling beneficiation method of fine- disseminated ore in a kind of uranium-bearing polymetallic ore, which is characterized in that the method includes following steps
Suddenly：
(1) uranium-bearing polymetallic ore is thrown into the obtained thin mud rough concentrate of tail through gravity treatment and carries out adverse current magnetic concentration working, obtain iron ore concentrate and
Magnetic concentration working tailing；
(2) by magnetic concentration working tailing that step (1) obtains, concentrated, confection and bulk flotation obtain uranium Biobium rare-earth and mix essence
Mine.
2. recycling beneficiation method according to claim 1, which is characterized in that the fine- disseminated ore refers to size distribution at 20 μm
Mineral below；
Preferably, further include being broken to uranium-bearing polymetallic ore before uranium-bearing polymetallic ore being carried out gravity treatment throwing tail in step (1)
It is broken, sieve and size mixing；
Preferably, described broken including using any one in jaw crusher, gyratory crusher or high-pressure roller mill or at least
Two kinds are handled, and preferably first jaw crusher and gyratory crusher are used to be handled, then at high-pressure roller mill
Reason；
Preferably, material of the output grain size less than 4mm after the screening；
Preferably, -0.074mm grades material content < 20wt% in the material of output after the screening；
Preferably, it is described size mixing after the pulp density that controls be 20wt%~40wt%.
3. recycling beneficiation method according to claim 1 or 2, which is characterized in that step (1) gravity treatment throws tail and uses spiral shell
Ore separators is revolved to carry out；
Preferably, the tailing yield that tail is thrown in step (1) gravity treatment is 45%~55%；
Preferably, average particle size≤20 μm of step (1) the thin mud rough concentrate；
Preferably, a concentration of 6wt%~10wt% of step (1) the thin mud rough concentrate.
4. recycling beneficiation method according to claim 1-3 any one of them, which is characterized in that step (1) the adverse current magnetic separation
Operation carries out in adverse current type permanent magnetism magnet drum；
Preferably, Surface field intensity >=300GS, preferably 1000GS~1500GS of step (1) the adverse current magnetic concentration working；
Preferably, the grade >=57wt% of step (1) described iron ore concentrate；
Preferably, a concentration of 4wt%~6wt% of step (1) the magnetic concentration working tailing.
5. according to claim 1-4 any one of them recycle beneficiation method, which is characterized in that step (2) it is described concentration include
It is carried out with concentrator and/or the dense bucket of taper；
Preferably, a concentration of 10wt%~15wt% of step (2) underflow being concentrated to give.
6. recycling beneficiation method according to claim 1-5 any one of them, which is characterized in that step (2) described confection
For：Bulk flotation is carried out after the underflow being concentrated to give is mixed with floating agent；
Preferably, the mixing is carried out by the way of stirring；
Preferably, described be blended in agitating device carries out, and is preferably carried out successively in three agitating devices；
Preferably, in the agitating device wheel rotation wire velocity control of impeller in 7.8m/s~8.3m/s；
Preferably, the floating agent includes gangue selective flocculant, activator, pH regulators, collecting agent and foaming agent；
Preferably, when be blended in carried out successively in three agitating devices when, in first agitating device add gangue selectivity
Flocculant adds activator in second agitating device, and pH regulators, collecting agent are added in third agitating device and is risen
Infusion；
Preferably, the pH adjusting agent includes sulfuric acid；
Preferably, the collecting agent includes sylvite collecting agent；
Preferably, the foaming agent includes MIBC and/or BK204；
Preferably, the additive amount of the gangue selective flocculant is 0~300g/t；
Preferably, the additive amount of the activator is 0~1000g/t；
Preferably, the additive amount of the pH adjusting agent is 0~18kg/t；
Preferably, the additive amount of the collecting agent is 0~1000g/t；
Preferably, the additive amount of the foaming agent is 0~100g/t；
Preferably, the incorporation time≤5min.
7. recycling beneficiation method according to claim 1-6 any one of them, which is characterized in that step (2) described bulk flotation
Including at least 1 roughing flotation, at least 2 times it is selected and at least 1 time is scanned；
Preferably, step (2) described bulk flotation be 1 roughing flotation, 2 times it is selected and 1 time is scanned；
Preferably, step (2) described bulk flotation specifically includes following steps：
(a) pending ore pulp is subjected to roughing flotation, obtains the first concentrate and the first tailing；
(b) the first concentrate progress at least 2 flotation that step (a) obtains are selected, obtain uranium Biobium rare-earth bulk concentrate；
(c) the first tailing that step (a) obtains, which is scanned to obtain, scans tailing；
Preferably, it is thick that the scavenger concentrate return to step (a) scanned in step (c) carries out flotation together with pending ore pulp
Choosing.
8. recycling beneficiation method according to claim 7, which is characterized in that the first concentrate is carried out 2 in the step (b)
Secondary flotation is selected, obtains uranium Biobium rare-earth bulk concentrate；
Specifically include following steps：
The first concentrate progress first time flotation that step (a) obtains is selected, obtains the second concentrate and the second tailing；
Second concentrate carries out that second of flotation is selected obtains uranium Biobium rare-earth bulk concentrate and third tailing；
Second tailing is scanned to obtain the 4th concentrate and the 4th tailing；
Preferably, it is selected to carry out first time flotation together with the first concentrate for the third tailing return；
Preferably, the 4th concentrate return to step (2) carries out confection processing；
Preferably, the tailing of scanning in the 4th tailing and step (c) is mixed to get total tailing, wherein uranium grade is
0.004wt%~0.006wt%, niobium pentaoxide grade are 0.018wt%~0.022wt%, the product of total amount of the rare earth oxide
Position 0.045wt%~0.055wt%.
9. recycling beneficiation method according to claim 1-8 any one of them, which is characterized in that the uranium Biobium rare-earth bulk concentrate
Middle uranium grade is 0.12wt%~0.20wt%, and niobium pentaoxide grade is 0.25wt%~0.30wt%, and rare earth oxide is total
The grade of amount is 0.6wt%~0.8wt%；
Preferably, the uranium rate of recovery of the uranium Biobium rare-earth bulk concentrate is 60%~65%, the niobium pentaoxide rate of recovery 45%~
50%, rare earth oxide overall recovery is 50%~60%.
10. recycling beneficiation method according to claim 1-9 any one of them, which is characterized in that the method includes following steps
Suddenly：
(1) uranium-bearing polymetallic ore be crushed, sieved, sized mixing and throw obtained average particle size≤20 μm of tail and a concentration of with gravity treatment
Thin mud rough concentrate in adverse current type permanent magnetism magnet drum is carried out adverse current magnetic concentration working, obtained by the thin mud rough concentrate of 6wt%~10wt%
To the iron ore concentrate of grade >=57wt% and the magnetic concentration working tailing of a concentration of 4wt%~6wt%；
Wherein, it is broken for first jaw crusher and gyratory crusher being used to be handled, then is handled with high-pressure roller mill, sieved
Output grain size is less than the material of 4mm after point, and the pulp density controlled after sizing mixing is 20wt%~40wt%, and gravity treatment is thrown tail and adopted
It is carried out with spiral concentrator, the tailing yield that tail is thrown in gravity treatment is 45wt%~55wt%, and the Surface field of adverse current magnetic concentration working is strong
Degree is 1000GS~1500GS；
(2) magnetic concentration working tailing concentrator and/or the dense bucket of taper that step (1) obtains are carried out dense, obtained a concentration of
The underflow of 10wt%~15wt%, the underflow being concentrated to give are mixed with floating agent in three agitating devices successively；
Mixed ore pulp carries out roughing flotation, obtains the first concentrate and the first tailing, and the first concentrate carries out first time flotation essence
Choosing obtains the second concentrate and the second tailing, and the first tailing, which is scanned to obtain, scans tailing and scavenger concentrate, and scavenger concentrate returns
With roughing flotation is carried out together with mixed ore pulp；
Second concentrate carries out that second of flotation is selected to obtain uranium Biobium rare-earth bulk concentrate and third tailing, and third tailing returns and the
It is selected that one concentrate carries out first time flotation together；
Second tailing is scanned to obtain the 4th concentrate and the 4th tailing, and the return of the 4th concentrate is mixed with floating agent, the
It four tailings and scans tailing and is mixed to get total tailing；
Wherein, the wheel rotation wire velocity control of impeller is in 7.8m/s~8.3m/s in agitating device, in first agitating device
Interior addition gangue selective flocculant, adds activator in second agitating device, pH is added in third agitating device
Regulator, collecting agent and foaming agent, incorporation time≤5min.
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| CN113399109A (en) * | 2021-07-08 | 2021-09-17 | 核工业北京化工冶金研究院 | Method for reverse flotation of throwable tail carbonate from carbon-silicon mudstone uranium ore |
| CN113399109B (en) * | 2021-07-08 | 2022-05-03 | 核工业北京化工冶金研究院 | Method for reverse flotation of throwable tail carbonate from carbon-silicon mudstone uranium ore |
| CN115710648A (en) * | 2021-08-21 | 2023-02-24 | 核工业二四0研究所 | Method for extracting uranium and thorium from green-layer silico-cerium-titanium ore |
| CN115710648B (en) * | 2021-08-21 | 2024-02-09 | 核工业二四0研究所 | Method for extracting uranium and thorium from green-layer silicon-cerium-titanium ore |
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