CN108273668B - Rapid flotation system and flotation method based on high-turbulence mixed mineralization - Google Patents
Rapid flotation system and flotation method based on high-turbulence mixed mineralization Download PDFInfo
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- CN108273668B CN108273668B CN201810282189.6A CN201810282189A CN108273668B CN 108273668 B CN108273668 B CN 108273668B CN 201810282189 A CN201810282189 A CN 201810282189A CN 108273668 B CN108273668 B CN 108273668B
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- 238000005188 flotation Methods 0.000 title claims abstract description 55
- 230000033558 biomineral tissue development Effects 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000007667 floating Methods 0.000 claims abstract description 30
- 239000006260 foam Substances 0.000 claims abstract description 16
- 230000001089 mineralizing effect Effects 0.000 claims abstract description 12
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 20
- 239000010959 steel Substances 0.000 claims description 20
- 239000000919 ceramic Substances 0.000 claims description 18
- 239000003153 chemical reaction reagent Substances 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 239000008396 flotation agent Substances 0.000 claims 1
- 239000002245 particle Substances 0.000 abstract description 12
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 11
- 239000011707 mineral Substances 0.000 abstract description 11
- 239000012071 phase Substances 0.000 description 47
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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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
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/24—Pneumatic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2203/00—Specified materials treated by the flotation agents; specified applications
- B03D2203/02—Ores
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biotechnology (AREA)
- Paper (AREA)
Abstract
A rapid flotation system and a flotation method based on strong turbulence mixing mineralization are suitable for rapid flotation of micro-fine mineral. The device comprises three parts of a quick floating tank, a feeding pump and a three-phase mixing mineralizer, wherein an umbrella-shaped three-phase ore pulp disperser is arranged at the bottom of the quick floating tank; the three-phase mixing mineralizer comprises a tubular mixer, a nano-microbubble generator, a tubular mineralizer, a tubular mineralizing sprayer and a spherical mixing mineralizer; the mixed ore pulp is sent to a three-phase mixed mineralizer, is subjected to intensive mixing mineralization by the three-phase mixed mineralizer, is fed into an umbrella-shaped three-phase ore pulp disperser at the bottom of the rapid floating tank, is separated in the rapid floating tank after being dispersed, is collected by a foam collecting tank at the upper part of the rapid floating tank and is discharged, and part of the outlet product of the bottom tailing tank is used as circulating ore pulp to be sent into a feeding pump feeding pipe to enter the system again, and the other part of the outlet product is used as a final tailing discharging system. The system has simple structure and compact device, realizes the repeated rapid floatation of mineral particles in the process of mixing and mineralizing by strong turbulence, and has high operation efficiency.
Description
Technical Field
The invention relates to a rapid flotation system and a flotation method, in particular to a rapid flotation system and a flotation method based on strong turbulence mixed mineralization, which are suitable for rapid flotation of micro-fine mineral.
Background
Flotation is a method for sorting minerals according to differences in floatability of minerals according to differences in the physicochemical properties of the surfaces of the mineral particles. The conventional flotation system mainly sends the well-regulated ore pulp into a flotation tank, and the ore pulp is stirred and aerated. Ore particles in ore pulp are contacted and collided with bubbles, ore particles with good floatability are selectively adhered to the bubbles and carried and lifted into a mineralized foam layer consisting of gas, liquid and solid phases, and the mineralized foam layer is mechanically scraped or overflowed from the ore pulp surface, dehydrated and dried into a concentrate product. Mineral particles such as gangue which cannot float up are discharged as tailing products from the bottom of the flotation tank along with ore pulp. The equipment and process involved in this system is relatively complex and the equipment takes up a large amount of space. Therefore, the rapid floatation system based on the strong turbulence mixing mineralization is designed, replaces the traditional ore pulp stirring barrel and the floatation tank, can complete the mixing mineralization and floatation separation process without stirring in the pulp mixing and floatation process, and has important significance for the development of a novel floatation system.
Disclosure of Invention
Technical problems: aiming at the defects of the technology, the rapid flotation system and the flotation method based on the strong turbulence mixed mineralization are provided, which have the advantages of simple structure and convenient use, and realize the multiple rapid flotation of mineral particles in the process of the strong turbulence mixed mineralization.
The technical scheme is as follows: in order to achieve the technical aim, the rapid flotation system based on the high-turbulence mixed mineralization comprises a rapid flotation tank and a feed pump which are connected with each other, wherein the rapid flotation tank comprises a foam tank outlet F at the upper part of the rapid flotation tank and a tailing tank outlet G at the bottom of the rapid flotation tank, the feed pump comprises a feed pump outlet A and a feed pump inlet B, and a three-phase mixed mineralizer is arranged on the rapid flotation tank; the three-phase mixed mineralizer comprises hollow spherical nano microporous ceramic, a tubular mixer, a nano microbubble generator and a tubular mineralizer are respectively arranged in three directions of the same plane of the periphery of the nano microporous ceramic, wherein the tubular mixer and the nano microbubble generator are oppositely arranged, the tubular mineralizer and the tubular mixer or the nano microbubble generator are vertically arranged on the same plane, a tubular mixer minimum diameter pipe section I is arranged between the tubular mixer and the nano microporous ceramic, a three-phase mixed mineralizer ore pulp inlet C is arranged on the tubular mixer, nano microporous ceramic is arranged in the nano microbubble generator, a three-phase mixed mineralizer compressed air inlet D is arranged on the nano microbubble generator, a tubular mineralizer minimum diameter pipe section II is arranged between the tubular mineralizer and the nano microporous ceramic, a tubular mineralizer ejector is arranged on the tubular mineralizer, a three-phase mixed mineralizer outlet E is arranged at the terminal of the tubular mineralizer, the tubular mineralizer vertically stretches into a quick floating tank, a feed pump inlet B of the feed pump is connected with a three-phase mixer ore pulp mineralizer ore pulp inlet C of the three-phase mineralizer through a pipeline, and a feed pump inlet G of the three-phase mineralizer is connected with a feed pump outlet A of the bottom of the quick pump, and the feed pump outlet A of the quick floating tank is respectively connected with a feed pump outlet A of the tailing tank bottom of the quick pump.
The umbrella-shaped three-phase ore pulp disperser comprises a zigzag steel plate and a plurality of umbrella-shaped trapezoid steel plates, wherein the umbrella-shaped trapezoid steel plates are uniformly distributed and vertically welded on the zigzag steel plate; the umbrella-shaped trapezoid steel plates are used for dispersing three-phase ore pulp, and the zigzag steel plates are used for discharging ore pulp at the bottom of the rapid floating tank.
The tubular mixer, the tubular mineralizer and the tubular mineralizing injector are all reducing pipelines, the pulp flow rate of the minimum diameter pipe section of the tubular mixer is not lower than 15m/s, the pulp flow rate of the minimum diameter pipe section of the tubular mineralizer is not lower than 20m/s, and the pulp flow rate of the straight pipe section of the tubular mineralizing injector is not lower than 3m/s.
The porosity of the nano microbubble generator filter element is more than 90%, and the pore diameter of the air hole is nano-scale; the minimum diameter pipe section I of the tubular mixer and the minimum diameter pipe section II of the tubular mineralizer are of venturi structures.
A rapid flotation method based on strong turbulence mixing mineralization comprises the following steps:
a. the raw ore pulp and the flotation reagent are respectively connected with an inlet A of a feed pump through a pipeline;
b. starting a feed pump, and rapidly mixing raw ore pulp and a flotation reagent by the feed pump under the action of sip of a centrifugal impeller of the feed pump, and then feeding the mixture into an ore pulp inlet C of a three-phase mixing mineralizer of the three-phase mixing mineralizer through a pipeline by an outlet B of the feed pump;
c. starting an air compression press matched with the system while starting a feed pump, and filling compressed air with the pressure of 0.4-0.6 MPa into a compressed air inlet of a three-phase mixed mineralizer of the nano-microbubble generator through a pipeline;
d. the raw ore pulp, the flotation reagent and the nano microbubbles are subjected to strong mixing and pre-mineralization in the unprecedented part of the spherical mixing mineralizer;
e. the three-phase ore pulp after being mixed and pre-mineralized by the spherical mixing mineralizer enters the tubular mineralizer, and enters the tubular mineralizer after being intensively mixed and mineralized again by the tubular mineralizer;
f. three-phase ore pulp is fed above the umbrella-shaped three-phase ore pulp disperser at the bottom of the rapid floating tank through the outlet E of the three-phase mixing mineralizer of the tubular mineralizing sprayer;
g. after the three-phase ore pulp is dispersed by the umbrella-shaped three-phase ore pulp disperser and separated in the rapid floating tank, the foam product is collected by the foam collecting tank at the upper part of the rapid floating tank and is discharged through the foam tank outlet at the upper part of the rapid floating tank, part of the product at the outlet G of the tailing tank at the bottom of the rapid floating tank is used as circulating ore pulp to be sent into the feeding pump outlet A of the feeding pump, mixed with the raw ore pulp and the flotation reagent, separated again, and the other part of the product is discharged as final tailings.
The beneficial effects are that: compared with a conventional flotation system, the method has the advantages that the surface modification of particles in a two-phase particle solution chemical system is realized under the strong mixing action of the impeller of the feed pump firstly, then the efficient mineralization of the mineral particles in a complex gas-liquid-solid three-phase high-turbulence system is realized under the action of the follow-up three-phase mixing mineralizer, and the refractory ore pulp particles separated by the rapid flotation tank can be fed into the system again through the feed pump, namely, the multiple surface modification, the multiple mineralization and the multiple flotation of the mineral particles are realized in a strong turbulence environment. Therefore, the system has the advantages of simple structure, compact device and high operation efficiency, and can effectively improve the floatation recovery rate of the refractory mineral particles.
Drawings
FIG. 1 is a block diagram of a rapid flotation system based on high turbulence mixed mineralization of the present invention;
FIG. 2 is a schematic diagram of a three-phase hybrid mineralizer according to the present invention;
FIG. 3 is a schematic view of the umbrella-shaped three-phase pulp disperser according to the invention.
In the figure: the device comprises a 1-quick floating tank, a 2-feeding pump, a 3-three-phase mixed mineralizer, a 4-tubular mixer, a 5-nano microbubble generator, 6-nano microporous ceramic, a 7-tubular mineralizer, an 8-tubular mineralizer ejector, a 9-tubular mixer minimum diameter pipe section, a 10-tubular mineralizer minimum diameter pipe section, 11-nano microporous ceramic, a 12-three-phase ore pulp disperser, a 13-zigzag steel plate, a 14-umbrella-shaped trapezoid steel plate, an A-feeding pump outlet, a B-feeding pump inlet, a C-three-phase mixed mineralizer ore pulp inlet, a D-three-phase mixed mineralizer compressed air inlet, an E-three-phase mixed mineralizer outlet, an F-quick floating tank upper foam tank outlet and a G-quick floating tank bottom tailing tank outlet.
Detailed Description
The following detailed description of specific embodiments of the invention is further detailed in conjunction with the accompanying drawings:
the rapid flotation system based on the high-turbulence mixed mineralization comprises a rapid flotation tank 1 and a feed pump 2 which are connected with each other, wherein the rapid flotation tank 1 comprises a rapid flotation tank upper foam tank outlet F and a rapid flotation tank bottom tailing tank outlet G, the feed pump 2 comprises a feed pump outlet A and a feed pump inlet B, and as shown in fig. 2, a three-phase mixed mineralizer 3 is arranged on the rapid flotation tank 1; the three-phase mixed mineralizer 3 comprises hollow spherical nano microporous ceramic 6, a tubular mixer 4, a nano microbubble generator 5 and a tubular mineralizer 7 are respectively arranged in three directions of the same plane of the periphery of the nano microporous ceramic 6, wherein the tubular mixer 4 and the nano microbubble generator 5 are oppositely arranged, the tubular mixer 7 and the tubular mixer 4 or the nano microbubble generator 5 are vertically arranged on the same plane, a tubular mixer minimum diameter pipe section I9 is arranged between the tubular mixer 4 and the nano microporous ceramic 6, a three-phase mixed mineralizer ore pulp inlet C is arranged on the tubular mixer 4, nano microporous ceramic 11 is arranged in the nano microbubble generator 5, a three-phase mixed mineralizer compressed air inlet D is arranged on the nano microporous ceramic 5, a tubular mineralizer minimum diameter pipe section II 10 is arranged between the tubular mineralizer 7 and the nano microporous ceramic 6, a tubular mineralizer ejector 8 is arranged on the tubular mineralizer 7, the tubular mixer 4, the tubular mineralizer 7 and the tubular ejector 8 are all variable diameter pipelines, the ore pulp flow rate of the tubular mixer minimum diameter pipe section 9 is not lower than 15m/s, the tubular mineralizer minimum diameter pipe section 7 is not lower than 20m/s, and the ore pulp flow rate of the tubular mineralizer jet pipe section 8 is not lower than 20 m/s; the porosity of the filter element of the nano microbubble generator 5 is more than 90%, and the pore diameter of the air hole is nano-scale; the minimum diameter pipe section I9 of the tubular mixer and the minimum diameter pipe section II 10 of the tubular mineralizer are of venturi structures; the three-phase mixed mineralizer outlet E is arranged at the terminal of the tubular mineralizing sprayer 8, the tubular mineralizing sprayer 8 vertically extends into the quick floating tank 1, the quick floating tank 1 is provided with a three-phase ore pulp disperser 12 at the three-phase mixed mineralizer outlet E below the tubular mineralizing sprayer 8, as shown in figure 3, the umbrella-shaped three-phase ore pulp disperser 12 comprises a zigzag steel plate 13 and a plurality of umbrella-shaped trapezoid steel plates 14, and the umbrella-shaped trapezoid steel plates 14 are uniformly and vertically welded on the zigzag steel plate 13; the umbrella-shaped trapezoidal steel plates 14 are used for dispersing three-phase ore pulp, and the zigzag steel plates 13 are used for discharging ore pulp at the bottom of the rapid floating tank; the feeding pump inlet B of the feeding pump 2 is connected with the ore pulp inlet C of the three-phase mixing mineralizer 3 through a pipeline, and the outlet G of the tailing box at the bottom of the rapid floating tank 1 is respectively connected with the discharge outlet and is connected with the feeding pump outlet A of the feeding pump 2.
A rapid flotation method based on strong turbulence mixing mineralization comprises the following steps:
a. the raw ore pulp and the flotation reagent are respectively connected with an inlet A of a feed pump 2 through a pipeline;
b. starting a feed pump 2, and under the action of sip suction of a centrifugal impeller of the feed pump 2, rapidly mixing raw ore pulp and a flotation reagent by the feed pump, and then feeding the mixture into an ore pulp inlet C of a three-phase mixing mineralizer 3 through a pipeline by an outlet B of the feed pump;
c. starting the feeding pump 2 and simultaneously starting an air compression press matched with the system, and filling compressed air with the pressure of 0.4-0.6 MPa into a compressed air inlet of a three-phase mixed mineralizer of the nano-microbubble generator 5 through a pipeline;
d. the raw ore pulp, the flotation reagent and the nano microbubbles are subjected to intense mixing and pre-mineralization in the unprecedented part of the spherical mixing mineralizer 6;
e. the three-phase ore pulp after being mixed and pre-mineralized by the spherical mixing mineralizer 6 enters the tubular mineralizer 7, and enters the tubular mineralizer ejector 8 after being intensively mixed and mineralized again by the tubular mineralizer 7;
f. the three-phase ore pulp is fed above an umbrella-shaped three-phase ore pulp disperser 12 at the bottom of the rapid floating tank 1 through a three-phase mixing mineralizer outlet E of the tubular mineralizing sprayer 8;
g. after three-phase ore pulp is separated in the rapid floating tank 1 after being dispersed by the umbrella-shaped three-phase ore pulp disperser 12, foam products are collected by the foam collecting tank at the upper part of the rapid floating tank 1 and discharged through the foam tank outlet at the upper part of the rapid floating tank, part of the products at the tailing tank outlet G at the bottom of the rapid floating tank is used as circulating ore pulp to be sent into the feeding pump outlet A of the feeding pump 2, mixed with raw ore pulp and flotation reagent, separated again, and the other part of the products is discharged as final tailings.
Claims (2)
1. The utility model provides a quick flotation system based on mixed mineralization of strong turbulence, includes interconnect's quick float bath (1) and feed pump (2), and quick float bath (1) include quick float bath upper portion foam tank export F and quick float bath bottom tailing case export G, and feed pump (2) include feed pump export B and feed pump entry A, its characterized in that: a three-phase mixing mineralizer (3) is arranged on the quick floating tank (1); the three-phase mixed mineralizer (3) comprises a hollow spherical first nano microporous ceramic (6), three directions of the same plane of the periphery of the first nano microporous ceramic (6) are respectively provided with a tubular mixer (4), a nano microporous generator (5) and a tubular mineralizer (7), wherein the tubular mixer (4) and the nano microporous generator (5) are oppositely arranged, the tubular mineralizer (7) and the tubular mixer (4) or the nano microporous generator (5) are vertically arranged on the same plane, a tubular mixer minimum diameter pipe section I (9) is arranged between the tubular mixer (4) and the first nano microporous ceramic (6), a three-phase mixed mineralizer ore pulp inlet C is arranged on the tubular mixer (4), a second nano microporous ceramic (11) is arranged in the nano microporous generator (5), the nano microporous generator (5) is provided with a three-phase mixed mineralizer compressed air inlet D, a tubular mineralizer minimum diameter pipe section II (10) is arranged between the tubular mineralizer (7) and the first nano microporous ceramic (6), a tubular jet mineralizer (8) is arranged on the mineralizer (7), a tubular jet terminal mineralizer (8) is arranged, a three-phase mixed mineralizer ore pulp inlet C is arranged in the tubular mixer (1), the rapid floating tank (1) is provided with a three-phase ore pulp disperser (12) at the outlet E of the three-phase mixed mineralizer below the tubular mineralizing sprayer (8), the outlet B of the feed pump (2) is connected with the ore pulp inlet C of the three-phase mixed mineralizer (3) through a pipeline, and the outlet G of the tailing tank at the bottom of the rapid floating tank (1) is respectively connected with the outlet and the inlet A of the feed pump (2);
the three-phase ore pulp disperser (12) comprises a zigzag steel plate (13) and a plurality of umbrella-shaped trapezoid steel plates (14), wherein the umbrella-shaped trapezoid steel plates (14) are uniformly distributed and vertically welded on the zigzag steel plate (13); the umbrella-shaped trapezoidal steel plates (14) are used for dispersing three-phase ore pulp, and the zigzag steel plates (13) are used for discharging ore pulp at the bottom of the rapid floating tank;
the tubular mixer (4), the tubular mineralizer (7) and the tubular mineralizing sprayer (8) are all reducing pipelines, the pulp flow rate of the minimum diameter pipe section (9) of the tubular mixer is not lower than 15m/s, the pulp flow rate of the minimum diameter pipe section (10) of the tubular mineralizer is not lower than 20m/s, and the pulp flow rate of the straight pipe section of the tubular mineralizing sprayer (8) is not lower than 3m/s;
the flotation process by adopting the system comprises the following steps:
a. feeding the raw ore pulp and the flotation reagent into an inlet A of a feed pump (2) through pipelines respectively;
b. starting a feed pump (2), and under the action of sip suction of a centrifugal impeller of the feed pump (2), rapidly mixing raw ore pulp and a flotation reagent by the feed pump, and then feeding the mixture into an ore pulp inlet C of a three-phase mixing mineralizer (3) through a pipeline by an outlet B of the feed pump;
c. starting an air compressor matched with the system while starting a feed pump (2), and filling compressed air with the pressure of 0.4-0.6 MPa into a compressed air inlet D of a three-phase mixed mineralizer of the nano-microbubble generator (5) through a pipeline;
d. the raw ore pulp, the flotation reagent and the nano microbubbles are strongly mixed and pre-mineralized in a cavity in the spherical three-phase mixed mineralizer (3);
e. the three-phase mixed mineralizer (3) mixes the three-phase ore pulp after the pre-mineralization to enter the tubular mineralizer (7), and the tubular mineralizer (7) intensively mixes and mineralizes again and then enters the tubular mineralizer ejector (8);
f. three-phase ore pulp is fed above an umbrella-shaped three-phase ore pulp disperser (12) at the bottom of the rapid floating tank (1) through a three-phase mixed mineralizer outlet E of the tubular mineralizer ejector (8);
g. after three-phase ore pulp is separated in the quick flotation tank (1) after being dispersed by the umbrella-shaped three-phase ore pulp disperser (12), foam products are collected by the foam collecting tank at the upper part of the quick flotation tank (1) and then discharged through the foam tank outlet at the upper part of the quick flotation tank, part of products discharged from the tailing tank outlet G at the bottom of the quick flotation tank is used as circulating ore pulp to be sent into the feeding pump inlet A of the feeding pump (2), mixed with raw ore pulp and flotation agent, separated again, and the other part of products is discharged as final tailings.
2. The rapid flotation system based on high turbulence mixed mineralization according to claim 1, wherein: the porosity of the filter element of the nano microbubble generator (5) is more than 90%, and the pore diameter of the air hole is nano-scale; the minimum diameter pipe section I (9) of the tubular mixer and the minimum diameter pipe section II (10) of the tubular mineralizer are of venturi structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810282189.6A CN108273668B (en) | 2018-03-28 | 2018-03-28 | Rapid flotation system and flotation method based on high-turbulence mixed mineralization |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810282189.6A CN108273668B (en) | 2018-03-28 | 2018-03-28 | Rapid flotation system and flotation method based on high-turbulence mixed mineralization |
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| CN108273668A CN108273668A (en) | 2018-07-13 |
| CN108273668B true CN108273668B (en) | 2024-03-01 |
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