CN108816524A - Floatation system - Google Patents
Floatation system Download PDFInfo
- Publication number
- CN108816524A CN108816524A CN201810924732.8A CN201810924732A CN108816524A CN 108816524 A CN108816524 A CN 108816524A CN 201810924732 A CN201810924732 A CN 201810924732A CN 108816524 A CN108816524 A CN 108816524A
- Authority
- CN
- China
- Prior art keywords
- flotation device
- ventilation opening
- slurry pump
- stirred tank
- ore slurry
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005188 flotation Methods 0.000 claims abstract description 57
- 239000002002 slurry Substances 0.000 claims abstract description 32
- 238000009423 ventilation Methods 0.000 claims abstract description 28
- 238000013022 venting Methods 0.000 claims abstract description 12
- 238000003756 stirring Methods 0.000 claims description 2
- 239000003814 drug Substances 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000003912 environmental pollution Methods 0.000 abstract description 7
- 239000000126 substance Substances 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 description 15
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 9
- 239000000463 material Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 231100000331 toxic Toxicity 0.000 description 5
- 230000002588 toxic effect Effects 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000007667 floating Methods 0.000 description 4
- 239000006260 foam Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 238000013019 agitation Methods 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000000686 essence Substances 0.000 description 2
- 238000009854 hydrometallurgy Methods 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000012991 xanthate Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/002—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using a central suction system, e.g. for collecting exhaust gases in workshops
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biotechnology (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
The invention discloses floatation systems.The system includes：The top of stirred tank, the stirred tank is at least partly closed, and has the first ventilation opening；Flotation device, the flotation device are connected with the sealed pipeline of the stirred tank, and the top of the flotation device is at least partly closed, and have the second ventilation opening；Ore slurry pump pond, the ore slurry pump pond are connected with the sealed pipeline of the flotation device, and the top of the ore slurry pump pond is at least partly closed, and have third venting mouth；And air draft passage, the air draft passage include exhausting supervisor and exhausting branch pipe, the exhausting supervisor is connected by the exhausting branch pipe with first ventilation opening, second ventilation opening and the third venting mouth.The floatation system is by least partly closing the top of stirred tank, flotation device and ore slurry pump pond, it prevents during chemicals treatment, medicament is evaporate into air, improves the working environment in flotation workshop, the operational risk for reducing production work personnel, reduces environmental pollution.
Description
Technical field
The present invention relates to metal mine fields, and in particular, to floatation system.
Background technique
Existing floatation system includes that flotation froth slot, flotation machine drum body, flowsheet of slurry agitation slot, foam pump pond etc. are main floating
Optional equipment is all made of open type arrangement, directly contacts with atmosphere, and flowsheet of slurry agitation slot and foam pump Chi Chu have stronger stirring,
On the one hand flowsheet of slurry agitation slot accelerates the dissolution of medicament in whipping process, on the other hand also accelerate waving for volatile medicament
Hair.Foam defoaming often occurs for foam pump pond, also has medicament volatilization.Medicament, which volatilizees and is discharged, to be directly discharged in air, not only
Increase the operational risk in worker's production, and pollutes environment.
Existing floatation system has much room for improvement as a result,.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art.For this purpose, one object of the present invention
It is to propose a kind of floatation system, the top of the stirred tank of the system, flotation device and ore slurry pump pond is at least partly closed, and medicine is prevented
It is evaporate into air in agent treatment process, improves the working environment in flotation workshop, reduce the operation wind of production work personnel
Danger, reduces environmental pollution.
Thus, according to an aspect of the present invention, the present invention provides a kind of floatation systems.Implementation according to the present invention
Example, the system include：The top of stirred tank, the stirred tank is at least partly closed, and has the first ventilation opening；Flotation device, institute
It states flotation device to be connected with the stirred tank, the top of the flotation device is at least partly closed, and has the second ventilation opening；Ore slurry pump
Pond, the ore slurry pump pond are connected with the flotation device, and the top of the ore slurry pump pond is at least partly closed, and have third venting
Mouthful；And air draft passage, the air draft passage include exhausting supervisor and exhausting branch pipe, the exhausting supervisor passes through the exhausting branch
Pipe is connected with first ventilation opening, second ventilation opening and the third venting mouth.
The floatation system of the embodiment of the present invention, by least partly sealing the top of stirred tank, flotation device and ore slurry pump pond
It closes, prevents during chemicals treatment, medicament is evaporate into air, improves the working environment in flotation workshop, reduces production
The operational risk of staff, reduces environmental pollution.
In addition, floatation system according to the above embodiment of the present invention, can also have following additional technical characteristic：
According to an embodiment of the invention, the stirred tank has the first lamina tecti, the first ventilation opening of institute is located at described first
On lamina tecti.
According to an embodiment of the invention, the flotation device has the second lamina tecti, the second ventilation opening of institute is located at described second
On lamina tecti.
According to an embodiment of the invention, the ore slurry pump pond has third lamina tecti, institute's third venting mouth is located at described the
On three lamina tectis.
According to an embodiment of the invention, the third lamina tecti further comprises overflow port, the overflow port passes through overflow
Channel is connected with the flotation device.
According to an embodiment of the invention, the system further comprises：Blower, the blower are connected with exhausting supervisor,
Air for extracting the flotation device, the ore slurry pump pond and the stirred tank forms negative pressure.
According to an embodiment of the invention, the blower is centrifugal fan.
According to an embodiment of the invention, the exhausting wind speed of the blower is 7-13m/s.
According to an embodiment of the invention, having transparent observing area on second lamina tecti.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, wherein：
Fig. 1 shows the structural schematic diagram of floatation system according to an embodiment of the invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
In the description of the present invention, term " longitudinal direction ", " transverse direction ", "upper", "lower", "front", "rear", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "top", "bottom" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the present invention rather than require the present invention that must be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.
It should be noted that term " first ", " second " are used for description purposes only, it is not understood to indicate or imply phase
To importance or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be with
Explicitly or implicitly include one or more of the features.Further, in the description of the present invention, unless otherwise saying
Bright, the meaning of " plurality " is two or more.
According to an aspect of the present invention, the present invention provides a kind of floatation systems.The floatation system of the embodiment of the present invention,
By at least partly closing the top of stirred tank, flotation device and ore slurry pump pond, prevent during chemicals treatment, medicament volatilization
Into air, the working environment in flotation workshop is improved, the operational risk of production work personnel is reduced, reduces environmental pollution.
Floatation system in order to facilitate understanding, with reference to Fig. 1, according to an embodiment of the invention, being solved to the floatation system
Explanation is released, which includes：
Stirred tank 100：According to an embodiment of the invention, the top of the stirred tank 100 is at least partly closed, and have first
Ventilation opening 110.In whipping process, some volatile raw materials and toxic raw materials volatilization, by by the top of stirred tank 100 at least
It is partially enclosed, it prevents the raw material of volatilization to be freely accessible to generate peculiar smell or oxious component in air, but passes through the first ventilation opening
110 discharges, improve the working environment in flotation workshop, reduce the operational risk of production work personnel, reduce environmental pollution.
According to an embodiment of the invention, the stirred tank 100 has the first lamina tecti 120, the first ventilation opening 110 is located at first
On lamina tecti 120.Stirred tank is sealed using the first lamina tecti as a result, avoids the excessive pollution environment of raw material of volatilization, and
And first lamina tecti be easy to take, sealing effect is good.
Flotation device 200：According to an embodiment of the invention, the flotation device 200 is connected with stirred tank 100, the flotation device 200
Top is at least partly closed, and has the second ventilation opening 210.In floatation process, especially some flotation for needing to heat
Cheng Zhong, some volatile raw materials and toxic raw materials volatilization, by least partly closing the top of flotation device 200, prevent from volatilizing
Raw material be freely accessible to generate peculiar smell or oxious component in air, but be discharged by the second ventilation opening 210, improve flotation
The working environment in workshop reduces the operational risk of production work personnel, reduces environmental pollution.
According to an embodiment of the invention, the flotation device 200 has the second lamina tecti 220, the second ventilation opening 210 be located at this
On two lamina tectis 220.Flotation device is sealed using the second lamina tecti as a result, avoids the excessive pollution environment of raw material of volatilization,
Also, the second lamina tecti is easy to take, and sealing effect is good.
According to an embodiment of the invention, having transparent observing area on second lamina tecti.It is convenient for passing through transparent sight as a result,
Cha Qu observes the disposition in flotation device, convenient for controlling the flotation treatment process of raw material.
Ore slurry pump pond 300：According to an embodiment of the invention, the ore slurry pump pond 300 is connected with flotation device 200, the ore slurry pump
The top in pond is at least partly closed, and has third venting mouth 310.In floatation process, especially some needs heat floating
During choosing, some volatile raw materials and toxic raw materials volatilization by least partly closing the top of flotation device 200, are prevented
The raw material of volatilization is freely accessible to generate peculiar smell or oxious component in air, but is discharged by the second ventilation opening 210, improves
The working environment in flotation workshop reduces the operational risk of production work personnel, reduces environmental pollution.
According to an embodiment of the invention, the ore slurry pump pond 300 has third lamina tecti 320, third venting mouth 310 is located at the
On three lamina tectis 320.Ore slurry pump pond is sealed using third lamina tecti as a result, avoids the excessive pollution ring of raw material of volatilization
Border, also, third lamina tecti is easy to take, and sealing effect is good.
According to an embodiment of the invention, the third lamina tecti 320 further comprises overflow port (being not shown on figure), overflow port
It is connected by overflow ducts with flotation device 200.It when slurry as a result, in ore slurry pump pond is excessive, is discharged by overflow port, through overflow
Channel enters flotation device and re-starts flotation processing, prevents wastage of material.
Wind channel 400：According to an embodiment of the invention, the air draft passage 400 includes exhausting supervisor 410 and exhausting branch pipe
420, wherein exhausting supervisor 410 passes through exhausting branch pipe 420 and the first ventilation opening 110, the second ventilation opening 210 and third venting mouth
310 are connected, and air draft pipe makes stirred tank, flotation device and ore slurry pump pond be in negative pressure state by pumping, to make the floating of volatilization
It selects medicament to overflow by the first ventilation opening, the second ventilation opening and third venting mouth, enters exhausting supervisor's discharge through exhausting branch pipe.
According to an embodiment of the invention, the system further comprises：Blower 500, the blower 500 are responsible for 410 phases with exhausting
Even, negative pressure is formed for extracting the air of stirred tank 100, flotation device 200 and ore slurry pump pond 300.The raw material to volatilize as a result, is negative
It under pressure condition, is overflowed by ventilation opening, prevents pollution air, also, form negative pressure using exhaust fan, at low cost, effect is good.
According to an embodiment of the invention, the blower 500 is centrifugal fan.The cost for forming negative pressure as a result, is low, effect
It is good.
According to an embodiment of the invention, the exhausting wind speed of the blower 500 is 7-13m/s.What is formed under the wind speed as a result, is negative
The pressure of pressure is suitable for guaranteeing that the raw material of volatilization is discharged in time, and avoid negative pressure excessively high, causes floating agent excessively to volatilize, makes
At waste.
Below with reference to specific embodiment, the present invention will be described, it should be noted that these embodiments are only explanation
Property, and be not considered as limiting the invention.
The solution of the present invention is explained below in conjunction with embodiment.It will be understood to those of skill in the art that following
Embodiment is merely to illustrate the present invention, and should not be taken as limiting the scope of the invention.Particular technique or item are not specified in embodiment
Part, it described technology or conditions or is carried out according to the literature in the art according to product description.Agents useful for same or instrument
Production firm person is not specified in device, and being can be with conventional products that are commercially available.
Embodiment 1
Domestic 600,000 t/a leaching residue flotation of Shandong recycles more metal projects, has since project contains cyanide, xanthate etc.
The particularity of malicious pernicious gas need to ensure that toxic and harmful gas cannot be revealed, be evaporate into air, using the embodiment of the present invention
Floatation system is handled, and the floatation system is thick using conventional one, two sweep, two cleaner flotation processes.
The material of flotation processing is hydrometallurgy leached mud, and material size is -400 mesh contents 90% or so, after sizing mixing
Leached mud concentration is 35%, carries out acidification first and sizes mixing, stirred tank of sizing mixing needs encapsulation process, to prevent toxic gas from leaking.
The ore pulp sized mixing is directly entered closed flotation device and carries out the first flotation operation, which includes one
Slightly, it two sweeps, the plumbum floatations processing of two essences, output lead concentrate；Plumbum floatation tailing enters next stage closed stirred tank and is adjusted
Slurry, the material sized mixing enter in the sealed flotation device of copper flotation, carry out the second flotation operation, which includes
One is thick, two sweep, the process flow of two essences, output copper concentrate and tailing.Copper concentrate and tailing enter the ore slurry pump pond of sealing through slag
Stock pump is delivered to concentrator processing.
During the hydrometallurgy leaching residue flotation, flotation device, stirred tank and ore slurry pump pond etc. are sealed processing,
And blower forced draft generation system negative pressure is utilized, the gas of volatilization is discharged through pipeline, prevents toxic, poisonous gas leakage from arriving
In air；In addition, medicament preparation region uses independent closed space, in order to carry out exhausting to medicament preparation region, medicine is prevented
Agent is evaporate into workshop.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiment or examples in can be combined in any suitable manner.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle of the present invention and objective, this
The range of invention is defined by the claims and their equivalents.
Claims (9)
1. a kind of floatation system, which is characterized in that including：
The top of stirred tank, the stirred tank is at least partly closed, and has the first ventilation opening；
Flotation device, the flotation device are connected with the stirred tank, and the top of the flotation device is at least partly closed, and have second
Ventilation opening；
Ore slurry pump pond, the ore slurry pump pond are connected with the flotation device, and the top of the ore slurry pump pond is at least partly closed, and have
There is third venting mouth；And
Air draft passage, the air draft passage include exhausting supervisor and exhausting branch pipe, and the exhausting supervisor passes through the exhausting branch pipe
It is connected with first ventilation opening, second ventilation opening and the third venting mouth.
2. floatation system according to claim 1, which is characterized in that the stirred tank has the first lamina tecti, and described the
One ventilation opening is located on first lamina tecti.
3. floatation system according to claim 1, which is characterized in that the flotation device has the second lamina tecti, and described the
Two ventilation openings are located on second lamina tecti.
4. floatation system according to claim 1, which is characterized in that the ore slurry pump pond has third lamina tecti, described
Third venting mouth is located on the third lamina tecti.
5. floatation system according to claim 4, which is characterized in that the third lamina tecti further comprises overflow port,
The overflow port is connected by overflow ducts with the flotation device.
6. floatation system according to claim 1, which is characterized in that further comprise：
Blower, the blower is connected with exhausting supervisor, for extracting the flotation device, the ore slurry pump pond and the stirring
The air of slot forms negative pressure.
7. floatation system according to claim 6, which is characterized in that the blower is centrifugal fan.
8. floatation system according to claim 7, which is characterized in that the exhausting wind speed of the blower is 7-13m/s.
9. floatation system according to claim 7, which is characterized in that have transparent observing area on second lamina tecti.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810924732.8A CN108816524A (en) | 2018-08-14 | 2018-08-14 | Floatation system |
| PCT/CN2019/087072 WO2020034678A1 (en) | 2018-08-14 | 2019-05-15 | Flotation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810924732.8A CN108816524A (en) | 2018-08-14 | 2018-08-14 | Floatation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108816524A true CN108816524A (en) | 2018-11-16 |
Family
ID=64153981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810924732.8A Pending CN108816524A (en) | 2018-08-14 | 2018-08-14 | Floatation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108816524A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020034678A1 (en) * | 2018-08-14 | 2020-02-20 | 中国恩菲工程技术有限公司 | Flotation system |
| CN115193591A (en) * | 2022-09-14 | 2022-10-18 | 北矿机电科技有限责任公司 | Environment-friendly flotation system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1922610A1 (en) * | 1969-05-03 | 1971-02-04 | Altenbergs Bergbau | Process and system for the flotation of fine-grain mixtures of substances, especially minerals |
| RU2091316C1 (en) * | 1996-01-10 | 1997-09-27 | Николай Федорович Мещеряков | Flotation machine for cleaning waste water |
| CN103521004A (en) * | 2013-10-23 | 2014-01-22 | 昆山市盛兴设备安装有限公司 | Air-exhausting dust-collecting system |
| CN104259007A (en) * | 2014-09-17 | 2015-01-07 | 招远市招金贵合科技有限公司 | Device and method for removing harmful impurities before cyanidation tailing flotation for high-grade sulphur concentrate |
| CN104998762A (en) * | 2015-08-05 | 2015-10-28 | 天津美腾科技有限公司 | Flotation processing center |
| CN107928009A (en) * | 2017-11-10 | 2018-04-20 | 叶大琪 | A kind of exhaust apparatus of shoemaking machine |
| CN208810300U (en) * | 2018-08-14 | 2019-05-03 | 中国恩菲工程技术有限公司 | Floatation system |
-
2018
- 2018-08-14 CN CN201810924732.8A patent/CN108816524A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1922610A1 (en) * | 1969-05-03 | 1971-02-04 | Altenbergs Bergbau | Process and system for the flotation of fine-grain mixtures of substances, especially minerals |
| RU2091316C1 (en) * | 1996-01-10 | 1997-09-27 | Николай Федорович Мещеряков | Flotation machine for cleaning waste water |
| CN103521004A (en) * | 2013-10-23 | 2014-01-22 | 昆山市盛兴设备安装有限公司 | Air-exhausting dust-collecting system |
| CN104259007A (en) * | 2014-09-17 | 2015-01-07 | 招远市招金贵合科技有限公司 | Device and method for removing harmful impurities before cyanidation tailing flotation for high-grade sulphur concentrate |
| CN104998762A (en) * | 2015-08-05 | 2015-10-28 | 天津美腾科技有限公司 | Flotation processing center |
| CN107928009A (en) * | 2017-11-10 | 2018-04-20 | 叶大琪 | A kind of exhaust apparatus of shoemaking machine |
| CN208810300U (en) * | 2018-08-14 | 2019-05-03 | 中国恩菲工程技术有限公司 | Floatation system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020034678A1 (en) * | 2018-08-14 | 2020-02-20 | 中国恩菲工程技术有限公司 | Flotation system |
| CN115193591A (en) * | 2022-09-14 | 2022-10-18 | 北矿机电科技有限责任公司 | Environment-friendly flotation system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20181116 |