CN107837698B - Dry powder slurrying and charging system - Google Patents
Dry powder slurrying and charging system Download PDFInfo
- Publication number
- CN107837698B CN107837698B CN201711139697.0A CN201711139697A CN107837698B CN 107837698 B CN107837698 B CN 107837698B CN 201711139697 A CN201711139697 A CN 201711139697A CN 107837698 B CN107837698 B CN 107837698B
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- dry powder
- stock solution
- slurry
- inlet
- slurrying
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- 239000000843 powder Substances 0.000 title claims abstract description 114
- 239000011550 stock solution Substances 0.000 claims abstract description 87
- 238000006243 chemical reaction Methods 0.000 claims abstract description 49
- 238000004537 pulping Methods 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 19
- 239000002002 slurry Substances 0.000 claims description 76
- 238000007599 discharging Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 15
- 238000005265 energy consumption Methods 0.000 abstract description 7
- 239000007788 liquid Substances 0.000 description 20
- 238000000034 method Methods 0.000 description 9
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 235000012255 calcium oxide Nutrition 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009854 hydrometallurgy Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/50—Mixing liquids with solids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/50—Mixing liquids with solids
- B01F23/565—Mixing liquids with solids by introducing liquids in solid material, e.g. to obtain slurries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/10—Mixing by creating a vortex flow, e.g. by tangential introduction of flow components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
- B01F35/716—Feed mechanisms characterised by the relative arrangement of the containers for feeding or mixing the components
- B01F35/7163—Feed mechanisms characterised by the relative arrangement of the containers for feeding or mixing the components the containers being connected in a mouth-to-mouth, end-to-end disposition, i.e. the openings are juxtaposed before contacting the contents
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Paper (AREA)
Abstract
The invention discloses a dry powder slurrying feeding system which comprises a dry powder feeding device and a slurrying device. The dry powder inlet is connected with the dry powder feeding device, the stock solution inlet is arranged on the side wall of the pulping device, a material guide piece is arranged in the stock solution inlet, the material guide piece enables the entering route of stock solution not to intersect with the central axis of the pulping device, the stock solution inlet is communicated with the stock solution storage tank through a stock solution conveying pipeline, and the pulp outlet is communicated with the reaction tank. The dry powder slurrying feeding system provided by the invention is suitable for various dry powder feeding working conditions, flexible in use and wide in application range, and by adopting the system, not only can the slurrying effect and the utilization rate of dry powder be improved, but also the operation environment can be improved and the energy consumption can be reduced.
Description
Technical Field
The invention belongs to the field of smelting and chemical industry, and particularly relates to a dry powder slurrying and feeding system.
Background
In the field of metal hydrometallurgy, there are many process conditions in which it is necessary to add dry powder to the system for reactions, for example lime powder (quicklime, slaked lime, limestone) in the neutralization reaction, metal powder (zinc powder, iron powder) in the displacement reaction, dry powder raw materials in the leaching process, etc. For such cases, both direct dry powder addition and slurry-first and then addition are typically employed. The direct dry powder adding method has the advantages of simple process and easy operation, but because the powder has small granularity, large specific surface area and large surface tension, the powder is easy to float and adhere in the adding process, so that the slurry is uneven, the dry powder consumption is increased, the operation environment is poor, and the blanking opening is easy to be blocked for some processes with higher reaction temperature; the prior pulping and then adding mode is carried out by adopting a pulping elevated tank or adopting a larger preparation tank to carry out pulping and then pumping, and the mode can solve the problem of nonuniform pulping in the direct adding mode, but the stirring and an intermediate pump are introduced, so that the energy consumption of the system is high. Thus, the manner in which the dry powder is fed needs to be further improved.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent. Therefore, an object of the present invention is to provide a dry powder slurry charging system, which is suitable for various dry powder charging conditions, flexible in use, and wide in application range, and by adopting the system, not only can the slurry effect and the utilization rate of dry powder be improved, but also the operation environment can be improved and the energy consumption can be reduced.
According to one aspect of the present invention, there is provided a dry powder slurry feed system comprising:
a dry powder feeding device;
the device comprises a slurry device, wherein the slurry device is provided with a dry powder inlet, a stock solution inlet and a slurry outlet, the dry powder inlet is connected with the dry powder feeding device, the stock solution inlet is arranged on the side wall of the slurry device, a material guide piece is arranged in the stock solution inlet, the material guide piece enables the inlet route of stock solution not to intersect with the central axis of the slurry device, the stock solution inlet is communicated with the stock solution storage tank through a stock solution conveying pipeline, and the slurry outlet is communicated with the reaction tank.
The dry powder slurrying feeding system provided by the embodiment of the invention can be suitable for various dry powder feeding working conditions, is flexible to use and wide in application range, and can also have the following advantages by adopting the dry powder slurrying feeding system provided by the embodiment of the invention: firstly, the dry powder can be pulpified by utilizing the reaction stock solution, so that the utilization rate of the dry powder is improved and the operation environment is improved; secondly, the dry powder can be pulpified by adopting an impact vortex type stirring mode, so that the pulping effect and the pulping rate of the dry powder are improved; thirdly, the dry powder slurrying charging system of the embodiment of the invention does not introduce power equipment into the slurrying device, thereby further reducing the energy consumption of the system and reducing the occupied area; fourth, can realize the continuous feeding of the dry powder of slurrying, improve the operating efficiency.
In addition, the dry powder slurry charging system according to the above embodiment of the present invention may further have the following additional technical features:
in some embodiments of the invention, the dry powder dosing device comprises: the dry powder hopper is suitable for temporarily storing dry powder, a bottom end outlet of the dry powder hopper is positioned above a feeding end of the conveying belt, and a discharging end of the conveying belt is positioned above a dry powder inlet of the pulping device. Thus, the dry powder can be stored by the dry powder hopper, and the dry powder temporarily stored in the dry powder hopper is sent into the slurrying device through the conveying belt.
In some embodiments of the invention, the slurrying apparatus comprises: the upper shell and the lower shell are connected up and down, wherein the upper shell is cylindrical, and the lower shell is in a reverse conical shape. Therefore, the method is not only beneficial to feeding of the dry powder and the reaction stock solution, but also can fully slurry the dry powder by utilizing the kinetic energy of the stock solution feeding.
In some embodiments of the invention, the dope inlet is provided on the upper shell. Therefore, the loss of kinetic energy of the stock solution during feeding can be reduced, so that the pulping rate and the pulping effect of the reaction stock solution on the dry powder can be further improved.
In some embodiments of the invention, the outlet end of the stock solution conveying pipeline extends from the stock solution inlet into the slurrying device to form the material guiding member. Thereby, the dry powder slurry feed system may be further simplified.
In some embodiments of the invention, the stock solution enters the stock solution guide along a tangential direction of an inner wall of the slurrying device. Thus, the slurrying effect of the reaction stock solution on the dry powder can be further improved.
In some embodiments of the invention, the dry powder slurrying feed system further comprises a stock solution transfer pump adapted to transfer stock solution from the stock solution reservoir into the slurrying device and the reaction tank. Therefore, the speed of the reaction stock solution entering the slurrying device and the reaction tank can be effectively controlled, and the slurrying effect of the reaction stock solution on the dry powder can be further improved.
In some embodiments of the invention, a second stock solution inlet is arranged on the lower shell of the slurrying device, and the second stock solution inlet is communicated with the stock solution storage tank through the stock solution conveying pump. Therefore, the method is not only beneficial to the discharge of the slurry, but also can effectively avoid the blockage of the slurry outlet by the slurry.
In some embodiments of the invention, the second stock solution inlet is disposed adjacent to the slurry outlet. Therefore, the partial pressure drop formed by the discharging speed difference can be utilized, the pulping discharging is further facilitated, and the slurry is effectively prevented from blocking the slurry outlet.
In some embodiments of the invention, the slurrying device is arranged above the reaction tank, and the lower part of the slurrying device extends into the reaction tank. Therefore, the gravity of the slurry can be utilized, the kinetic energy allowance of the second feed inlet can be utilized to enable the slurry to enter the reaction tank, the dry powder slurry feeding system is further simplified, the energy consumption is reduced, and the operation environment of dry powder slurry feeding can be effectively improved.
Drawings
Fig. 1 is a schematic diagram of a dry powder slurry feed system in accordance with one embodiment of the invention.
Fig. 2 is a schematic diagram of a dry powder slurry feed system according to yet another embodiment of the invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
According to one aspect of the present invention, there is provided a dry powder slurry feed system comprising: a dry powder charging apparatus 100 and a slurrying apparatus 200.
The slurry device 200 has a dry powder inlet 210, a stock solution inlet 220, and a slurry outlet 230, the dry powder inlet 210 is connected with the dry powder feeding device 100, the stock solution inlet 220 is disposed on a sidewall of the slurry device 200, a material guiding member 240 is disposed in the stock solution inlet 220, the material guiding member 240 makes an entry route of the stock solution not intersect with a central axis of the slurry device 200, the stock solution inlet 220 is connected with the stock solution storage tank 300 through a stock solution conveying pipeline 250, and the slurry outlet 230 is connected with the reaction tank 400.
The dry powder slurrying feeding system provided by the embodiment of the invention can be suitable for various dry powder feeding working conditions, is flexible to use and wide in application range, and can also have the following advantages by adopting the dry powder slurrying feeding system provided by the embodiment of the invention: firstly, the dry powder can be pulpified by utilizing the reaction stock solution, so that the utilization rate of the dry powder is improved and the operation environment is improved; secondly, the dry powder can be pulpified by adopting an impact vortex type stirring mode, so that the pulping effect and the pulping rate of the dry powder are improved; thirdly, the dry powder slurry charging system according to the above embodiment of the present invention does not introduce power equipment into the slurry device 200, so as to further reduce the energy consumption of the system and reduce the occupation of land; fourth, can realize the continuous feeding of the dry powder of slurrying, improve the operating efficiency.
The dry powder slurry feed system of the above-described embodiments of the present invention is described in detail below with reference to fig. 1-2.
According to an embodiment of the present invention, the dry powder feeding device 100 may include: the dry powder hopper 110 and the conveyor belt 120, the dry powder hopper 110 is suitable for temporarily storing dry powder, the bottom outlet 111 of the dry powder hopper 110 is positioned above the feeding end 121 of the conveyor belt 120, and the discharging end 122 of the conveyor belt 120 is positioned above the dry powder inlet 210 of the slurrying device 200. Thus, the dry powder hopper 110 can be used to store dry powder, and the dry powder temporarily stored in the dry powder hopper 110 is sent into the slurrying device 200 through the conveyor belt 120, so as to control the speed of adding the dry powder into the slurrying device 200.
According to an embodiment of the present invention, the slurrying apparatus 200 may comprise: an upper case 260 and a lower case 270 connected up and down, wherein the upper case 260 is cylindrical and the lower case 270 is inverted cone-shaped. Therefore, the method is not only beneficial to feeding of the dry powder and the reaction stock solution, but also can fully slurry the dry powder by utilizing the kinetic energy of the stock solution feeding.
According to an embodiment of the present invention, the angle of the cone bottom of the lower shell 270 of the slurrying apparatus 200 may be 50-80. Thus, the pulping efficiency and the pulping effect of pulping the dry material can be further improved.
According to an embodiment of the invention, the stock solution inlet 220 may be provided on the upper shell 260 of the slurrying device 200. Therefore, the movement space of the reaction raw liquid entering the slurrying device along the material guide 240 can be further increased, the force of the impact vortex generated after the reaction raw liquid enters the slurrying device 200 is enhanced, and the slurrying rate and the slurrying effect of the reaction raw liquid on the dry powder are further improved.
According to an embodiment of the invention, the outlet end of the transfer conduit 250 connected to the stock solution inlet 220 may extend from the stock solution inlet 220 into the slurrying apparatus 200 to form a guide. Thereby, the dry powder slurry feed system may be further simplified.
According to an embodiment of the present invention, the stock solution may enter the slurry guiding member 240 along a tangential direction of the inner wall of the slurry forming device 200. Therefore, the strength of the impact vortex generated after the reaction raw liquid enters the slurrying device 200 can be further improved, and the slurrying rate and slurrying effect of the reaction raw liquid on the dry powder are further improved.
According to an embodiment of the present invention, the dry powder slurry feed system may further comprise a stock solution transfer pump 310, the stock solution transfer pump 310 being adapted to transfer stock solution from the stock solution reservoir 300 into the slurry apparatus 200 and the reaction tank 400. Thus, the power for conveying the reaction stock solution can be remarkably improved, the speed of the reaction stock solution entering the slurrying device 200 and the reaction tank 400 can be increased, and the slurrying rate and the slurrying effect of the reaction stock solution on the dry powder can be further improved.
According to an embodiment of the present invention, the number of the stock solution transfer pumps 310 may be plural, so that the transfer power of the reaction stock solution may be further adjusted, thereby controlling the speed of the reaction stock solution entering the slurrying device 200 and the reaction tank 400, and further improving the slurrying rate and the slurrying effect of the reaction stock solution on the dry powder.
According to an embodiment of the present invention, as shown in fig. 2, a second stock solution inlet 280 may be provided on the lower shell 270 of the slurrying apparatus 200, and the second stock solution inlet 280 is in communication with the stock solution tank 300 through the stock solution transfer pump 250. The inventors have found that by providing the second stock solution inlet 280 in the lower housing 270 of the slurrying apparatus 200, a portion of the stock solution introduced into the reaction tank 400 may first enter the lower portion of the slurrying apparatus 200 through the second stock solution inlet 280 and then flow into the reaction tank 400. Therefore, the downward flow of the part of the reaction stock solution can be utilized to generate a local negative pressure at the bottom of the slurrying device 200, so that the swirling slurrying liquid at the upper part of the slurrying device 200 can be smoothly added into the reaction tank 400 from the slurrying outlet 230 at the bottom of the slurrying device 200, and the slurrying outlet 230 is effectively prevented from being blocked by the slurrying liquid.
According to an embodiment of the present invention, the second stock solution inlet 280 may be disposed adjacent to the slurry outlet 230. Therefore, local negative pressure can be generated near the slurry outlet 230 of the slurry device 200 by changing the liquid inlet direction and liquid inlet speed of the reaction raw liquid, which is further beneficial to discharging the slurry in the slurry device 200 and effectively prevents the slurry from blocking the slurry outlet 230.
According to an embodiment of the present invention, the slurrying device 200 may be disposed above the reaction tank 400, and the lower portion of the slurrying device 200 protrudes into the reaction tank 400. Therefore, the gravity of the slurry can be utilized to enable the slurry to naturally enter the reaction tank 400, so that a dry powder slurry feeding system is further simplified, energy consumption is reduced, and the operation environment of dry powder slurry feeding can be effectively improved.
According to an embodiment of the present invention, an overflow pipe 290 may be provided at the upper portion of the slurrying apparatus 200, and a discharge port 291 of the overflow pipe protrudes into the reaction tank 400. Therefore, the loss of the reaction stock solution and the dry powder caused by overflow of the slurrying device 200 can be effectively avoided.
According to an embodiment of the present invention, the outlet end positions of the raw liquid delivery pipe 250 adjacent to the raw liquid inlet 220 and the second raw liquid inlet 280 may be provided with liquid inlet regulating valves, respectively, independently. Therefore, the opening of the liquid inlet regulating valve can be regulated to control the speed and direction of the reaction raw liquid entering the pulping device 200, so that the reaction raw liquid forms a vortex and stirs the dry material when entering the pulping device 200 through the raw liquid inlet 220, and a local negative pressure is formed at the bottom of the pulping device 200 when the reaction raw liquid enters the pulping device 200 through the second raw liquid inlet 280, thereby remarkably improving the pulping rate and pulping effect of the dry material, facilitating the discharge of the pulping material in the pulping device 200, and effectively avoiding the blockage of the pulping material outlet 230 by the pulping material.
According to an embodiment of the present invention, the level of the slurry in the slurry device 200 may be controlled by a brake control system, the control point of the brake control system may be the level of the slurry in the slurry device 200, and the adjustment point may be the opening of the inlet valve. Therefore, the pulping effect on the dry materials can be further ensured, and the local negative pressure is formed at the bottom of the pulping device 200.
According to the embodiment of the invention, the dry powder slurry feeding system can preferably carry out dry powder slurry feeding on the dry powder with the particle size of 3.8-300 mu m, so that the slurry rate and the slurry effect on the dry powder can be further improved.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (6)
1. A dry powder slurry feed system, comprising:
a dry powder feeding device;
the slurry device is provided with a dry powder inlet, a stock solution inlet and a slurry outlet, the dry powder inlet is connected with the dry powder feeding device, the stock solution inlet is arranged on the side wall of the slurry device, a material guide piece is arranged in the stock solution inlet, the material guide piece enables the entering route of stock solution not to intersect with the central axis of the slurry device, the stock solution inlet is communicated with the stock solution storage tank through a stock solution conveying pipeline, and the slurry outlet is communicated with the reaction tank; the slurrying device comprises: an upper shell and a lower shell which are connected up and down, wherein the upper shell is cylindrical, and the lower shell is in a reverse conical shape; the stock solution inlet is arranged on the upper shell;
the stock solution delivery pump is suitable for delivering stock solution of the stock solution storage tank to the slurrying device and the reaction tank, a second stock solution inlet is arranged on the lower shell of the slurrying device, and the second stock solution inlet is communicated with the stock solution storage tank through the stock solution delivery pump.
2. The dry powder slurry feeding system of claim 1, wherein the dry powder feeding device comprises: the dry powder hopper is suitable for temporarily storing dry powder, a bottom end outlet of the dry powder hopper is positioned above a feeding end of the conveying belt, and a discharging end of the conveying belt is positioned above a dry powder inlet of the pulping device.
3. The dry powder slurry feeding system of claim 1, wherein the outlet end of the stock solution delivery conduit extends from the stock solution inlet into the slurry device to form the guide.
4. A dry powder slurry feed system as claimed in claim 1 or claim 3, wherein the feed guide directs the stock solution into the slurry apparatus in a tangential direction to the inner wall of the slurry apparatus.
5. The dry powder slurry feed system of claim 1, wherein the second stock solution inlet is disposed adjacent the slurry outlet.
6. The dry powder slurry feeding system of claim 5, wherein the slurry device is disposed above the reaction tank and a lower portion of the slurry device extends into the reaction tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711139697.0A CN107837698B (en) | 2017-11-16 | 2017-11-16 | Dry powder slurrying and charging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711139697.0A CN107837698B (en) | 2017-11-16 | 2017-11-16 | Dry powder slurrying and charging system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107837698A CN107837698A (en) | 2018-03-27 |
| CN107837698B true CN107837698B (en) | 2024-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711139697.0A Active CN107837698B (en) | 2017-11-16 | 2017-11-16 | Dry powder slurrying and charging system |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000328346A (en) * | 1999-05-24 | 2000-11-28 | Mitsubishi Rayon Co Ltd | Preparation of dope for spinning acrylonitrile-based polymer |
| RU36015U1 (en) * | 2003-11-05 | 2004-02-20 | ООО Научно-производственная экологическая фирма "ЭКО-технология" | Technological site for decontamination and complex processing of polymetallic waste products |
| CN102011001A (en) * | 2010-12-31 | 2011-04-13 | 株洲冶炼集团股份有限公司 | Feeding device and method for cadmium-removing boiling purification tank system |
| CN102389705A (en) * | 2011-10-21 | 2012-03-28 | 中国恩菲工程技术有限公司 | Zinc oxide desulphurization system |
| CN104561563A (en) * | 2014-12-29 | 2015-04-29 | 河南豫光锌业有限公司 | Indium-rich slag reduction presoaking technology and device thereof |
| CN205223320U (en) * | 2015-12-21 | 2016-05-11 | 云南驰宏锌锗股份有限公司 | Zinc hydrometallurgy purifies additive preprocessing device with washing function |
-
2017
- 2017-11-16 CN CN201711139697.0A patent/CN107837698B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000328346A (en) * | 1999-05-24 | 2000-11-28 | Mitsubishi Rayon Co Ltd | Preparation of dope for spinning acrylonitrile-based polymer |
| RU36015U1 (en) * | 2003-11-05 | 2004-02-20 | ООО Научно-производственная экологическая фирма "ЭКО-технология" | Technological site for decontamination and complex processing of polymetallic waste products |
| CN102011001A (en) * | 2010-12-31 | 2011-04-13 | 株洲冶炼集团股份有限公司 | Feeding device and method for cadmium-removing boiling purification tank system |
| CN102389705A (en) * | 2011-10-21 | 2012-03-28 | 中国恩菲工程技术有限公司 | Zinc oxide desulphurization system |
| CN104561563A (en) * | 2014-12-29 | 2015-04-29 | 河南豫光锌业有限公司 | Indium-rich slag reduction presoaking technology and device thereof |
| CN205223320U (en) * | 2015-12-21 | 2016-05-11 | 云南驰宏锌锗股份有限公司 | Zinc hydrometallurgy purifies additive preprocessing device with washing function |
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| CN107837698A (en) | 2018-03-27 |
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