CN113304877A - Three-product dense medium cyclone two-section separation density and pressure online regulation and control method - Google Patents
Three-product dense medium cyclone two-section separation density and pressure online regulation and control method Download PDFInfo
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- CN113304877A CN113304877A CN202110588467.2A CN202110588467A CN113304877A CN 113304877 A CN113304877 A CN 113304877A CN 202110588467 A CN202110588467 A CN 202110588467A CN 113304877 A CN113304877 A CN 113304877A
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- 238000000926 separation method Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000003245 coal Substances 0.000 claims abstract description 40
- 230000001105 regulatory effect Effects 0.000 claims abstract description 25
- 239000000725 suspension Substances 0.000 claims description 27
- 239000007788 liquid Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 7
- 239000010878 waste rock Substances 0.000 claims description 4
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 230000005389 magnetism Effects 0.000 claims 2
- 230000001276 controlling effect Effects 0.000 abstract description 10
- 229910052500 inorganic mineral Inorganic materials 0.000 description 9
- 239000011707 mineral Substances 0.000 description 9
- 239000006148 magnetic separator Substances 0.000 description 6
- 238000012216 screening Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003250 coal slurry Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010436 fluorite Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000002367 phosphate rock Substances 0.000 description 1
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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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
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
- B03B5/28—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation
- B03B5/30—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation using heavy liquids or suspensions
- B03B5/32—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation using heavy liquids or suspensions using centrifugal force
- B03B5/34—Applications of hydrocyclones
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- Cyclones (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
Abstract
The invention discloses a two-stage separation density and pressure online regulation and control method of a three-product dense medium cyclone, which comprises the steps of collecting medium coal and gangue medium media in a proportioning mode, pressurizing the medium coal and gangue medium media by a pump to enable the medium coal and gangue medium media to enter a two-stage cyclone, regulating and controlling the two-stage separation density and pressure, proportionally collecting medium gangue medium and gangue medium in a medium circulation system of the three-product dense medium cyclone according to a separation density value set by a two-stage separation requirement of the three-product dense medium cyclone, enabling the two-stage circulation medium to be equal to the set separation density value by detecting the two-stage circulation medium and regulating the proportioning relation between the medium gangue medium and the gangue medium, achieving online regulation of the density, and online regulating the two-stage separation pressure by online controlling the rotating speed of a two-stage circulation medium pump. The invention has the characteristics of simple system and automatic regulation and control of two-stage density pressure, is a brand new two-stage density and pressure regulation and control method, and can realize high-precision separation of three products of the three-product heavy medium cyclone.
Description
Technical Field
The invention relates to the field of mineral separation, in particular to a two-section separation density and pressure online regulation and control method of a three-product heavy medium cyclone.
Background
The heavy medium cyclone is a mineral separation device which separates out light density and heavy density minerals by utilizing a heavy medium suspension and minerals under the strengthening of a centrifugal force field based on the Archimedes principle, and the three-product cyclone is a mineral separation device which is composed of a first-section cyclone two-section cyclone and a second-section connecting pipe and can separate out three kinds of density grades of minerals with light density, intermediate density and high density, and is divided into two series products with two kinds of mineral feeding modes of non-pressure and pressure. The prior three-product heavy medium cyclone is widely used for coal dressing and also has application in the separation of other minerals such as phosphorite, fluorite ore and the like. The core of the sorting method of the three-product dense medium cyclone is the control and adjustment of the density of the dense medium suspension. At present, the technology and the method for realizing the on-line regulation and control of the first-section separation density of the three-product heavy medium cyclone are commonly applied, generally, a qualified medium suspension liquid which is regulated to a certain density by a qualified barrel is pumped into the cyclone (without pressure) or is firstly pumped into the cyclone (with pressure) together with minerals after being pumped into a mixing barrel, the density of the suspension liquid is detected on line in the process, the density of the suspension liquid is controlled in a set density range on line by adopting a mode of adding medium into a medium combining barrel or adding water into an inlet pipe of a medium combining pump, and the separation density of the first-section cyclone is regulated by regulating the set density; however, the separation density of the second-stage cyclone is difficult to adjust, only fine adjustment can be performed by replacing the underflow port and the cone of the second-stage cyclone and the feeding pressure of the first-stage cyclone, and online adjustment cannot be realized. Therefore, the invention is necessary to realize the method for adjusting the two-stage separation density and pressure on line by utilizing the three-product dense medium cyclone designed by a special structure. The invention finds a method for online regulating and controlling the density of the two sections based on the structure of a specific cyclone.
The method (application number 201510470070.8) for adjusting the two-stage separation density of the three-product dense medium cyclone on line in Chinese patent adopts a method of utilizing the overflow of the coal slurry dense medium cyclone to shunt to a raw coal qualified medium barrel. The technical scheme adopted in the invention is only suitable for a density control system of the non-pressure three-product heavy medium cyclone, and the separation pressure can not be adjusted by adjusting the first-stage separation density and further adjusting the second-stage separation density.
Chinese patent is a method (application number 20201091-385.8) capable of adjusting the two-section separation density of a three-product dense medium cyclone online, and the method adopts the steps that a specific feeding structure is arranged at the two-section connecting section of the cyclone, and clear water and a medium are added to further adjust the two-section density. The technical scheme adopted in the invention does not describe a pressure adjusting method, and the density is adjusted by adding water or medium externally, and the method does not use a density detection device and does not use a method for performing internal regulation and control in a medium circulating system of the three-product cyclone.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides an online regulating and controlling method for the two-section separation density and pressure of a three-product heavy medium cyclone, which can adjust the two-section separation density and pressure of the three-product heavy medium cyclone online without adding a medium.
In order to solve the technical problems, the invention provides the following technical scheme: a three-product heavy medium cyclone two-section separation density and pressure online regulation and control method is characterized in that the device used in the method comprises a three-product heavy medium cyclone, a clean coal medium removal sieve, a clean coal medium combination flow dividing device, a middling medium removal sieve, a gangue medium removal sieve, a middling medium combination flow dividing device, a gangue medium combination flow dividing device regulating valve, a two-section circulating medium barrel, a two-section circulating medium pump, a two-section circulating medium densimeter, a two-section pressure gauge and a pipeline, and the method is characterized in that: the three-product heavy medium cyclone comprises a second section of connecting pipe, a second section of three-product heavy medium cyclone which is arranged at one end of the second section of connecting pipe and is provided with an external feeding port, and a first section of three-product heavy medium cyclone at the other end;
the sorting method comprises the following steps: the method utilizes a specific three-product heavy medium cyclone with a structure that a material inlet is additionally arranged at the second section of the three-product heavy medium cyclone or an opening is arranged at a connecting pipe at the second section, so that the material entering the second section of the three-product heavy medium cyclone is composed of two parts of a first-section heavy product and a second-section circulating heavy medium suspension liquid, the second-section circulating heavy medium suspension liquid is composed of a medium (intermediate density grade product) medium of a medium coal de-medium screening medium section (referred to as medium coal combination for short) and a gangue (high density grade product) qualified medium (referred to as gangue combination for short) of a gangue de-medium screening medium section which are proportioned and collected, and partial or all medium coal combination and gangue combination are proportioned and collected to a second-section circulating medium barrel by adjusting the switching values of a medium coal combination flow dividing device adjusting valve of the medium coal combination flow dividing device and a gangue combination flow dividing device adjusting valve of the medium coal combination flow dividing device and the gangue flow dividing device, forming a two-stage circulating dense medium suspension. The collection proportion of the middlings and the gangue is adjusted, the density of the second-stage circulating dense medium suspension liquid can be adjusted, the second-stage circulating medium pump is used for pressurizing the middlings and the gangue to enter the second stage of the triple-product dense medium cyclone, the density and the pressure of the second-stage circulating dense medium suspension liquid are detected by a second-stage circulating medium densimeter and a second-stage pressure gauge which are installed on a second-stage feeding medium-mixing pipe, and the collection proportion of the middlings and the gangue and the rotation speed of the pump are adjusted on line through density and pressure feedback, so that the purpose of adjusting and controlling the second-stage separation density and pressure on line is achieved.
As a preferred technical scheme of the invention, the density of the qualified medium suspension entering the second section of the three-product dense medium cyclone is adjustable on line, the density value of the suspension is preset, and the detection value of a densimeter arranged on a qualified medium pipe of the two-section feeding is adjusted on line through the opening degrees of a medium coal mixing and distributing device regulating valve and a gangue mixing and distributing device regulating valve, so that the detection value is equal to the set value.
As a preferred technical scheme of the invention, the two-stage circulating medium pump is a variable-frequency speed-regulating pump, and the second-stage separation pressure is adjusted on line by regulating and controlling the lift of the two-stage circulating medium pump on line through variable frequency.
According to a preferable technical scheme, a magnetic separator is arranged below the clean coal medium removing sieve, a qualified medium barrel is arranged below the magnetic separator, a qualified medium pump is connected to the discharge end of the qualified medium barrel, the output end of the qualified medium pump is connected with a density magnetic substance content meter, and a section of feeding pressure gauge is arranged at the connection position of the density magnetic substance content meter and a section of the three-product heavy medium cyclone.
As a preferred technical scheme of the invention, the two-section circulating medium barrel is free of other medium feeding materials of magnetite powder except feeding materials collected by the ratio of the gangue medium to the gangue medium.
Compared with the prior art, the invention can achieve the following beneficial effects:
according to the separation density value set by the secondary separation requirement of the three-product dense medium cyclone, the medium gangue medium and the gangue medium in the medium circulating system of the three-product dense medium cyclone are collected in a proportioning manner to form a secondary circulating medium, the secondary circulating medium is equal to the set separation density value by detecting the secondary circulating medium and adjusting the proportioning relation of the medium gangue medium and the gangue medium, the density is adjusted on line, and the secondary separation pressure is adjusted on line by controlling the rotating speed of a secondary circulating medium pump on line.
Drawings
FIG. 1 is a flow chart of an apparatus capable of on-line regulating and controlling the two-stage separation density and pressure of a three-product heavy medium cyclone.
Wherein: 1. a three-product heavy medium cyclone; 1-1, a first section of a three-product heavy medium cyclone; 1-2, a second section connecting pipe; 1-3, a second section of a three-product heavy medium cyclone; 2. cleaning coal, removing medium and screening; 3. medium coal medium removing and screening; 4. removing medium from gangue and screening; 5. a clean coal medium combining and distributing device; 6. a medium coal medium combining and distributing device; 7. a medium coal medium combining and distributing device adjusting valve; 8. a gangue medium combining and distributing device; 9. the waste rock medium combining and distributing device adjusts the valve; 10. a magnetic separator; 11. a qualified medium barrel; 12. a qualified medium pump; 13. density magnetic content meter; 14. a feeding pressure gauge; 15. a second section of circulating medium barrel; 16. a second stage circulating medium pump; 17. a two-stage circulating medium densimeter; 18. two-section pressure gauge.
Detailed Description
The present invention will be further described with reference to specific embodiments for the purpose of facilitating an understanding of technical means, characteristics of creation, objectives and functions realized by the present invention, but the following embodiments are only preferred embodiments of the present invention, and are not intended to be exhaustive. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents and the like used in the following examples are commercially available unless otherwise specified.
Example (b):
as shown in the figure, compared with the prior art (application No. 201510470070.8) and the prior art (application No. 20201091-385.8), the invention provides the online control method for the two-stage separation density and pressure of the three-product heavy medium cyclone. The sorting method comprises the following steps: a. the method comprises the following steps of utilizing a three-product dense medium cyclone 1 with a structure that a second section 1-3 of the three-product dense medium cyclone is provided with an external feeding port or an opening at a first and second connecting pipes 1-2, and realizing that materials entering the second section 1-3 of the three-product dense medium cyclone consist of a first section 1-1 dense product of the three-product dense medium cyclone and a second section circulating dense medium suspension;
b. the composition of the two-stage circulating dense medium suspension liquid is formed by collecting qualified medium under the screen of medium coal medium removal sieve 3 medium combining section medium, which is called medium coal medium combination for short, and gangue high-density product gangue medium removal sieve 4 medium combining section gangue, which is called gangue medium combination for short;
c. by adjusting the switching values of a middling coal mixing and distributing device regulating valve 7 of a middling coal mixing and distributing device 6 and a gangue mixing and distributing device regulating valve 9 of a gangue mixing and distributing device 8, part or all of middling coal mixing and gangue mixing are proportioned and collected to a two-section circulating medium barrel 15 to form a two-section circulating heavy medium suspension liquid;
d. adjusting the collection proportion of the middlings and the gangue, adjusting the density of the two-stage circulating dense medium suspension, pressurizing the two-stage circulating dense medium suspension into two stages 1-3 of a three-product dense medium cyclone by using a two-stage circulating medium pump 16, and detecting the density and the pressure of the two-stage circulating dense medium suspension by using a two-stage circulating medium densimeter 17 and a two-stage pressure gauge 18 which are arranged on a two-stage feeding medium-mixing pipe;
e. the total collection proportion of the coal medium and the gangue and the rotating speed of a pump are adjusted on line through density and pressure feedback, so that the density and the pressure of the two-stage separation are regulated and controlled on line. As in the apparatus flowchart of fig. 1.
The working principle of the invention is as follows: according to the separation density value set by the separation requirements of the two sections 1-3 of the three-product dense medium cyclone, the medium gangue and the gangue in the medium circulating system of the three-product dense medium cyclone 1 are proportioned and collected to form a two-section circulating medium, the two-section circulating medium is equal to the set separation density value by detecting the two-section circulating medium and adjusting the proportioning relation of the medium gangue and the gangue, the online adjustment of the density is achieved, and the two-section separation pressure is adjusted online by controlling the rotating speed of the two-section circulating medium pump 16 online.
In other embodiments, the density of the qualified medium suspension entering the two sections 1-3 of the three-product dense medium cyclone is adjusted online, the density value of the suspension is preset, and the opening degree of a proportioning valve of a medium coal mixing and distributing device regulating valve 7 and a gangue mixing and distributing device regulating valve 9 is used for adjusting the detection value of a densimeter arranged on the two sections of the feeding qualified medium pipe online, so that the detection value is equal to the set value.
In other embodiments, the secondary circulation medium pump 16 is a variable-frequency speed-regulating pump, and the second-stage separation pressure is adjusted online by controlling the lift of the secondary circulation medium pump 16 through variable frequency.
In other embodiments, a magnetic separator 10 is arranged below the clean coal medium removing sieve 2, a qualified medium barrel 11 is arranged below the magnetic separator 10, a qualified medium pump 12 is connected to the discharge end of the qualified medium barrel 11, a density magnetic substance content meter 13 is connected to the output end of the qualified medium pump 12, and a section of feeding pressure gauge 14 is arranged at the joint of the density magnetic substance content meter 13 and a section 1-1 of the three-product heavy medium cyclone
The cleaned coal medium removing sieve 2 is screened by a magnetic separator 10 and then subjected to impurity removal, the screened qualified cleaned coal falls into a qualified medium barrel 11, and then the cleaned coal is conveyed to a section 1-1 of a three-product heavy medium cyclone through a density magnetic material content meter 13 by a qualified medium pump 12.
In other embodiments, the two-stage circulating medium barrel 15 has no additional medium feeding of magnetite powder other than the feeding collected by the medium-gangue and gangue medium mixture ratio, and no medium is added.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The utility model provides a three-product dense medium cyclone two-stage separation density and pressure on-line regulation and control method, the device that this method used includes three-product dense medium swirler (1), clean coal sculping sieve (2), clean coal closes medium diverging device (5), middlings sculping sieve (3), waste rock sculping sieve (4), middlings closes medium diverging device (6), waste rock closes medium diverging device (8), waste rock closes medium diverging device governing valve (9), two-stage cycle medium bucket (15), two-stage cycle medium pump (16), two-stage cycle medium densimeter (17), two-stage pressure gauge (18) and pipeline, its characterized in that: the three-product heavy medium cyclone (1) comprises a two-section connecting pipe (1-2), a two-section three-product heavy medium cyclone (1-3) which is arranged at one end of the two-section connecting pipe (1-2) and is provided with an external feeding port, and a first section three-product heavy medium cyclone (1-1) at the other end;
the sorting method comprises the following steps: the method is characterized in that a specific three-product heavy medium cyclone (1) with a structure that a two-section (1-3) of the three-product heavy medium cyclone is provided with an external feeding port or an opening at a two-section connecting pipe (1-2) is utilized to realize that materials entering the two-section (1-3) of the three-product heavy medium cyclone consist of a heavy product at the one-section (1-1) of the three-product heavy medium cyclone and a two-section circulating heavy medium suspension, the two-section circulating heavy medium suspension consists of a medium coal (intermediate density grade product) medium de-medium screen (3) medium combining section medium (medium coal combining medium for short) and a gangue (high density grade product) gangue de-medium screen (4) combining medium section qualified medium (gangue combining medium for short) in proportion and is collected, and the switching value of a medium coal combining medium shunting device regulating valve (7) of a medium coal combining medium shunting device (6) and a gangue combining medium shunting device regulating valve (9) of a gangue combining medium shunting device (8) is adjusted, so that part or all of the medium coal mixed medium and the gangue mixed medium are proportioned and collected to a second-stage circulating medium barrel (15) to form a second-stage circulating dense medium suspension. The collection proportion of the middlings and the gangue is adjusted, the density of the second-stage circulating dense medium suspension liquid can be adjusted, the middlings and the gangue are pressurized by a second-stage circulating medium pump (16) and enter a second stage (1-3) of a three-product dense medium cyclone, the density and the pressure of the second-stage circulating dense medium suspension liquid are detected by a second-stage circulating medium densimeter (17) and a second-stage pressure gauge (18) which are installed on a second-stage feeding medium-mixing pipe, and the collection proportion of the middlings and the gangue and the rotation speed of the pump are adjusted on line through density and pressure feedback, so that the second-stage separation density and pressure can be adjusted on line.
2. The on-line adjusted two-stage sort density of claim 1, characterized in that: the density of the qualified medium suspension entering the second section (1-3) of the three-product dense medium cyclone is adjustable on line, the density value of the suspension is preset, and the detection value of a densimeter arranged on a qualified medium pipe of the second section feeding is adjusted on line through the opening degree of a proportioning valve of a medium coal mixing and distributing device regulating valve (7) and a gangue mixing and distributing device regulating valve (9), so that the detection value is equal to the set value.
3. The on-line adjusted two-stage sort density of claim 1, characterized in that: the two-stage circulating medium pump (16) is a variable-frequency speed regulating pump, and the lift of the two-stage circulating medium pump (16) is regulated and controlled on line through variable frequency, so that the two-stage separation pressure is regulated on line.
4. The on-line adjusted two-stage sort density of claim 1, characterized in that: clean coal sculping sieve (2) below is provided with magnet separator (10), and magnet separator (10) below is provided with qualified medium bucket (11), qualified medium bucket (11) discharge end is connected with qualified medium pump (12), qualified medium pump (12) output is connected with density magnetism thing and contains volume (13), density magnetism thing contains volume (13) and one section (1-1) junction of three products dense medium swirler is provided with one section pan feeding manometer (14).
5. The method of claim 1, wherein the method further comprises: the two-section circulating medium barrel (15) is not provided with other medium feeding materials of magnetite powder except feeding materials collected by the medium gangue medium and the gangue medium mixture ratio.
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| CN202110588467.2A CN113304877A (en) | 2021-05-28 | 2021-05-28 | Three-product dense medium cyclone two-section separation density and pressure online regulation and control method |
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| CN202110588467.2A CN113304877A (en) | 2021-05-28 | 2021-05-28 | Three-product dense medium cyclone two-section separation density and pressure online regulation and control method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1156741A1 (en) * | 1983-06-27 | 1985-05-23 | Украинский научно-исследовательский и проектно-конструкторский институт по обогащению и брикетированию углей "Укрнииуглеобогащение" | Three-product hydrocyclone with force-free charging of source material |
| CN203750714U (en) * | 2014-04-11 | 2014-08-06 | 中煤科工集团唐山研究院有限公司 | Three-product dense medium cyclone capable of carrying out online adjustment on two-stage separation density |
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| CN112058479A (en) * | 2020-09-03 | 2020-12-11 | 中国矿业大学 | Two-section separation density regulating device and method for three-product heavy medium cyclone |
-
2021
- 2021-05-28 CN CN202110588467.2A patent/CN113304877A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| SU1156741A1 (en) * | 1983-06-27 | 1985-05-23 | Украинский научно-исследовательский и проектно-конструкторский институт по обогащению и брикетированию углей "Укрнииуглеобогащение" | Three-product hydrocyclone with force-free charging of source material |
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Inventor after: Wei Zhongkuan Inventor after: Guo Dalin Inventor after: Shi Yingxiang Inventor after: Cheng Huichao Inventor after: Wang Zhanfu Inventor after: Li Hongqi Inventor after: Cheng Kai Inventor after: Xu Huilin Inventor before: Wei Zhongkuan Inventor before: Guo Dalin Inventor before: Shi Yingxiang Inventor before: Cheng Huichao Inventor before: Wang Zhanfu Inventor before: Li Hongqi Inventor before: Cheng Kai Inventor before: Xu Huilin |
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Application publication date: 20210827 |