CN112483417B - Circulating pump for selenium silver gold production process - Google Patents
Circulating pump for selenium silver gold production process Download PDFInfo
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- CN112483417B CN112483417B CN202011466954.3A CN202011466954A CN112483417B CN 112483417 B CN112483417 B CN 112483417B CN 202011466954 A CN202011466954 A CN 202011466954A CN 112483417 B CN112483417 B CN 112483417B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/445—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps
- F04D29/448—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps bladed diffusers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
- F04D7/06—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metals
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
- C22B3/06—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions, e.g. with acids generated in situ; in inorganic salt solutions other than ammonium salt solutions
- C22B3/08—Sulfuric acid, other sulfurated acids or salts thereof
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
- C22B3/12—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic alkaline solutions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/007—Details, component parts, or accessories especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/445—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
- F04D29/688—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
- F04D7/06—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metals
- F04D7/065—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metals for liquid metal
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2250/00—Geometry
- F05D2250/50—Inlet or outlet
- F05D2250/52—Outlet
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention discloses a circulating pump for a selenium silver gold production process, which comprises the following steps: 1) slurrying, 2) sulfating roasting, 3) dilute acid copper separation, 4) alkaline leaching lead removal, 5) gold separation by chlorination, 6) sodium sulfite silver separation, and 7) formaldehyde reduction; wherein, the operation conditions and control parameters of the chlorination and gold separation process are as follows: liquid-solid ratio: 4 to 4.5:1, steam heating temperature: processing time is 90 to 95 ℃: the time is approximately equal to 3h; this circulating pump is the centrifugal pump, the centrifugal pump includes first spiral case (1), second spiral case (2), outlet pipe (3), first water conservancy diversion portion (4), second water conservancy diversion portion (5), inclined plane (6), impeller (9), its characterized in that: a plurality of arc-shaped grooves (7) are formed in the inclined surface (6). The pressure stability and the overall performance of the circulating pump can be improved, and therefore the production cost is saved.
Description
Technical Field
The invention relates to the technical field of selenium silver gold production processes/production systems, in particular to a circulating pump for a selenium silver gold production process.
Background
As shown in fig. 1, the existing selenium silver gold production process mainly comprises the following steps: 1) slurrying, 2) sulfating roasting, 3) dilute acid copper separation, 4) alkaline leaching lead removal, 5) gold chloride powder, 6) sodium sulfite silver separation and 7) formaldehyde reduction.
Raw material of selenium, silver and goldThe production process comprises the following steps: sulfating, roasting and steaming the copper anode mud in an electric heating rotary kiln, absorbing selenium-containing flue gas by tertiary water to obtain selenious acid, and absorbing SO in the flue gas 2 Obtaining crude selenium after reduction; the selenium steaming slag is subjected to filter pressing after dilute acid copper separation, the copper separation slag and anode mud of a lead ingot system are subjected to filter pressing after processes of alkaline leaching lead separation, chlorination gold separation and the like, the gold separation slag is subjected to processes of sodium sulfite silver separation, formaldehyde reduction and the like to obtain silver powder, and the gold separation liquid is subjected to liquid SO 2 Gold ingots are obtained through the processes of reduction, casting and the like, the reduced solution is replaced by copper powder to obtain platinum-palladium enrichment, the platinum-palladium enrichment and the roasted palladium-containing waste catalyst are subjected to chlorination leaching and filter pressing, filter residues (crude platinum-palladium powder) are subjected to ammoniation platinum precipitation and filter pressing, palladium-containing filtrate is subjected to acidification, hydrazine hydrate reduction and other processes to obtain sponge palladium, and ammonium chloroplatinate precipitation is subjected to calcination to obtain sponge platinum. A plurality of circulating pumps/conveying pumps are used in the selenium silver gold production process, and the performance of the circulating pumps also influences the pressure stability of liquid supply and the production cost.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a circulating pump for a selenium-silver-gold production process, which can reduce liquid separation at the upstream part of a second volute through the design of an arc-shaped groove, so that pressure loss is reduced, and the pressure stability and the overall performance of the circulating pump are improved. Through the design of the communication hole, a part of liquid is allowed to flow from the radial outer side to the radial inner side of the second flow guide part, so that the turbulence and the pressure fluctuation of the upstream part of the second volute are reduced, the pressure stability and the overall performance of the circulating pump are improved, and the production cost is saved.
In order to achieve the purpose, the invention adopts the technical scheme that:
a circulating pump for a selenium silver gold production process comprises the following steps: 1) slurrying, 2) sulfating roasting, 3) dilute acid copper separation, 4) alkaline leaching lead removal, 5) gold separation by chlorination, 6) sodium sulfite silver separation, and 7) formaldehyde reduction; wherein, the operation conditions and control parameters of the alkaline leaching deleading process are as follows: liquid-solid ratio: 4 to 4.5:1, steam heating temperature: 80 to 90 ℃, leaching end point pH:8 to 10, treatment time: the time is approximately equal to 4h; the operation conditions and control parameters of the gold powder chlorination procedure are as follows: liquid-solid ratio: 4 to 4.5:1, steam heating temperature: processing time is 90 to 95 ℃: the reaction time is approximately equal to 3h; this circulating pump is the centrifugal pump, the centrifugal pump includes first spiral case (1), second spiral case (2), outlet pipe (3), first water conservancy diversion portion (4), second water conservancy diversion portion (5), inclined plane (6), impeller (9), install the impeller in the cavity that first spiral case and second spiral case constitute, the exit portion of first spiral case has the outlet pipe, the second spiral case is located first spiral case, and the low reaches portion of second spiral case is located the outlet pipe, the upper reaches portion of second spiral case has first water conservancy diversion portion, second water conservancy diversion portion, first water conservancy diversion portion is located the upper reaches of second water conservancy diversion portion, one side of keeping away from the impeller of first water conservancy diversion portion has the inclined plane, its characterized in that: the inclined surface (6) is provided with a plurality of arc-shaped grooves (7).
Further, in the chlorination gold separation process, most of gold in the lead separation slag exists in a metal state, and gold is dissolved by adopting an aqueous solution oxidation method; the sodium chloride is used as an oxidant, the gold separation by chlorination is carried out in a mixed solution of sodium chloride and sulfuric acid, so that platinum and palladium are leached out simultaneously, and meanwhile, the leaching of silver is avoided due to the existence of chloride ions in a leaching agent; pumping water and gold reduction solution into a gold separation kettle, adding industrial salt, sodium chlorate and sulfuric acid, adding lead separation slag into a reaction kettle, stirring, carrying out filter pressing after the reaction is finished, allowing the gold separation slag to enter a sodium sulfite silver separation process, and allowing the gold separation solution to enter a gold reduction process.
Furthermore, the arrangement direction of the arc-shaped grooves (7) is along the liquid flowing direction, and the groove extending direction of the arc-shaped grooves is along the axial direction of the impeller (9).
Further, the arc-shaped groove (7) is a semicircular groove or a U-shaped groove.
Furthermore, one or more communicating holes (8) are formed in the second flow guide part (5), and the plurality of communicating holes are arranged along the axial direction of the impeller.
Further, the communication hole (8) is obliquely arranged relative to the direction of the second flow guide part along the liquid flowing direction, and the oblique included angle is 25-50 degrees.
Further, the first flow guiding part (4) has a central angle Q, and the second flow guiding part (5) has a central angle Q; central angle Q =5-30 °.
According to the circulating pump for the selenium-silver-gold production process, the liquid separation at the upstream part of the second volute can be reduced through the design of the arc-shaped groove, so that the pressure loss is reduced, and the pressure stability and the overall performance of the circulating pump are improved. Through the design of the communication hole, a part of liquid is allowed to flow from the radial outer side to the radial inner side of the second flow guide part, so that the turbulence and the pressure fluctuation of the upstream part of the second volute are reduced, the pressure stability and the overall performance of the circulating pump are improved, and the production cost is saved.
Drawings
FIG. 1 is a schematic view of a prior art selenium silver gold production process;
FIG. 2 is a schematic structural diagram of a circulating pump used in the selenium-silver-gold production process of the present invention;
FIG. 3 is a schematic structural diagram of a circulating pump used in the selenium-silver-gold production process of the present invention.
In the figure: the spiral-shell pump comprises a first spiral shell 1, a second spiral shell 2, an outlet pipe 3, a first flow guide part 4, a second flow guide part 5, an inclined surface 6, an arc-shaped groove 7, a communication hole 8 and an impeller 9.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, a circulating pump for a selenium silver gold production process, the selenium silver gold production process comprises the following steps: 1) slurrying, 2) sulfating roasting, 3) dilute acid copper separation, 4) alkaline leaching lead removal, 5) gold chloride separation, 6) sodium sulfite silver separation and 7) formaldehyde reduction.
Wherein, 4) alkaline leaching and deleading:
pouring the copper separating slag and the lead anode slime into a lead separating reaction tank, adding NaOH, heating, stirring and leaching, and allowing lead, arsenic, tellurium, bismuth and the like to enter a leaching solution; and (3) carrying out filter pressing on the slurry, wherein filter residues are lead separating residues, lead separating filtrate is neutralized by sulfuric acid in a lead precipitation tank for precipitating lead, arsenic and the like, and the treatment efficiency is more than or equal to 98%. And pumping the neutralized liquid (lead-containing wastewater) into a workshop wastewater treatment facility for further treatment.
The main reaction is as follows:
PbSO 4 +4NaOH=Na 2 SO 4 +2H 2 O+Na 2 PbO 2
As 2 O 3 +6NaOH=2Na 3 AsO 3 +3H 2 O
Na 2 PbO 2 +2H 2 SO 4 =PbSO 4 ↓+Na 2 SO 4 +2H 2 O
the operating conditions and control parameters of the alkaline leaching deleading process are as follows: liquid-solid ratio: 4 to 4.5:1, steam heating temperature: 80 to 90 ℃, leaching end point pH:8 to 10, treatment time: 4h.
Wherein, 5) chlorination and gold separation:
most of the gold in the lead separating slag exists in a metal state, and in order to dissolve the gold, an aqueous solution oxidation method is adopted to dissolve the gold. The gold separation by chlorination (platinum and palladium leaching simultaneously) is carried out in the mixed solution of sodium chloride and sulfuric acid by using sodium chlorate as an oxidant, and simultaneously, the leaching of silver is avoided due to the existence of chloride ions in the leaching agent.
The main reaction is as follows:
2Au+ClO 3 - +6H + +7Cl - =2AuCl 4 - +3H 2 O
3Pt+2ClO 3 - +12H + +16Cl - =3PtCl 6 2- +6H 2 O
2Pd+2ClO 3 - +12H + +16Cl - =3H 2 PdCl 6 2- +6H 2 O
6Ag+NaClO 3 +6HCl=6AgCl↓+NaCl+3H 2 O
Ag 2 O+2NaCl+H 2 SO 4 =2AgCl↓+Na 2 SO 4 +H 2 O
pumping water and gold reduction solution into a gold separation kettle, adding industrial salt, sodium chlorate and sulfuric acid, adding lead separation slag into a reaction kettle, stirring, carrying out filter pressing after the reaction is finished, allowing the gold separation slag to enter a sodium sulfite silver separation process, and allowing the gold separation solution to enter a gold reduction process.
The operational conditions and control parameters of the chlorination and gold separation procedures are as follows: liquid-solid ratio: 4 to 4.5:1, steam heating temperature: processing time is 90 to 95 ℃: and the value is approximately equal to 3h.
As shown in fig. 2-3, a circulating pump for a silver-selenium gold production process, the circulating pump being a centrifugal pump, the centrifugal pump including a first volute 1, a second volute 2, an outlet pipe 3, a first guide portion 4, a second guide portion 5, an inclined surface 6, and a (centrifugal) impeller 9, the impeller 9 being installed in a chamber formed by the first volute 1 and the second volute 2, the outlet portion of the first volute 1 having the outlet pipe 3, the second volute 2 being located in the first volute 1, and a downstream portion of the second volute 2 being located in the outlet pipe 3, an upstream portion of the second volute 2 having the first guide portion 4 and the second guide portion 5, the first guide portion 4 being located upstream of the second guide portion 5, and a side of the first guide portion 4 away from the impeller 9 having the inclined surface 6, is characterized in that: a plurality of arc-shaped grooves 7 are arranged on the inclined surface 6.
Further, the arrangement direction of the plurality of arc-shaped grooves 7 is along the liquid flowing direction, and the groove extending direction of the arc-shaped grooves 7 is along the axial direction of the impeller 9. The arc-shaped groove 7 is a semicircular groove or a U-shaped groove.
According to the invention, through the design of the arc-shaped groove 7, the liquid separation at the upstream part of the second volute 2 can be reduced, so that the pressure loss is reduced, the pressure stability and the overall performance of the circulating pump are improved, and the service life of the circulating pump is prolonged.
Further, one or more communication holes 8 are formed in the second flow guide part 5, and the arrangement direction of the communication holes 8 is along the axial direction of the impeller 9. The invention allows a part of liquid to flow from the radial outer side to the radial inner side of the second guide part 5 through the design of the communication hole 8, thereby reducing the turbulence and pressure fluctuation of the upstream part of the second volute 2, improving the pressure stability and the overall performance of the circulating pump and saving the production cost.
Further, the communication hole 8 is arranged obliquely with respect to the direction of the second flow guide 5 in the liquid flow direction, in particular at an angle/inclination of about 30-45 °, preferably 35-40 °.
Further, the first flow guide part 4 has a central angle Q, and the second flow guide part 5 has a central angle Q; in particular the central angle Q =7-20 °, preferably 10-15 °.
According to the circulating pump for the selenium-silver-gold production process, the liquid separation at the upstream part of the second volute can be reduced through the design of the arc-shaped groove, so that the pressure loss is reduced, and the pressure stability and the overall performance of the circulating pump are improved. Through the design of the communication hole, a part of liquid is allowed to flow from the radial outer side to the radial inner side of the second flow guide part, so that the turbulence and the pressure fluctuation of the upstream part of the second volute are reduced, the pressure stability and the overall performance of the circulating pump are improved, and the production cost is saved.
The above-described embodiments are illustrative of the present invention and not restrictive, it being understood that various changes, modifications, substitutions and alterations can be made herein without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims (6)
1. A circulating pump for a selenium silver gold production process comprises the following steps: 1) slurrying, 2) sulfating roasting, 3) dilute acid copper separation, 4) alkaline leaching lead removal, 5) gold separation by chlorination, 6) sodium sulfite silver separation, and 7) formaldehyde reduction; wherein, the operation conditions and control parameters of the alkaline leaching deleading process are as follows: liquid-solid ratio: 4 to 4.5:1, steam heating temperature: 80 to 90 ℃, leaching end point pH:8 to 10, treatment time: 4h is approximately distributed; the operational conditions and control parameters of the chlorination and gold separation procedures are as follows: liquid-solid ratio: 4 to 4.5:1, steam heating temperature: processing time is 90 to 95 ℃: the time is approximately equal to 3h; this circulating pump is the centrifugal pump, the centrifugal pump includes first spiral case (1), second spiral case (2), outlet pipe (3), impeller (9), install the impeller in the cavity that first spiral case and second spiral case constitute, the exit portion of first spiral case has the outlet pipe, the second spiral case is located first spiral case, and the low reaches portion of second spiral case is located the outlet pipe, the upper reaches portion of second spiral case has first water conservancy diversion portion, second water conservancy diversion portion, first water conservancy diversion portion is located the upper reaches of second water conservancy diversion portion, one side of keeping away from the impeller of first water conservancy diversion portion has the inclined plane, its characterized in that: a plurality of arc-shaped grooves (7) are arranged on the inclined surface (6), the arrangement direction of the arc-shaped grooves (7) is along the liquid flowing direction, and the groove extending direction of the arc-shaped grooves is along the axial direction of the impeller (9).
2. The circulating pump for the selenium-silver-gold production process according to claim 1, wherein in the chlorination gold separation process, most of the gold in the lead separation slag exists in a metallic state, and the gold is dissolved by an aqueous solution oxidation method; the sodium chloride is used as an oxidant, the gold separation by chlorination is carried out in a mixed solution of sodium chloride and sulfuric acid, so that platinum and palladium are leached out simultaneously, and meanwhile, the leaching of silver is avoided due to the existence of chloride ions in a leaching agent; pumping water and gold reduction solution into a gold separation kettle, adding industrial salt, sodium chlorate and sulfuric acid, adding lead separation slag into a reaction kettle, stirring, carrying out filter pressing after the reaction is finished, allowing the gold separation slag to enter a sodium sulfite silver separation process, and allowing the gold separation solution to enter a gold reduction process.
3. The circulating pump for the selenium silver gold production process according to claim 1 or 2, wherein the arc-shaped groove (7) is a semicircular groove or a U-shaped groove.
4. The circulating pump for the selenium-silver-gold production process according to claim 3, wherein the second diversion part (5) is provided with one or more communicating holes (8) which are arranged along the axial direction of the impeller.
5. The circulation pump for the selenium silver gold production process according to claim 4, wherein the communication hole (8) is inclined with respect to the direction of the second guide part along the liquid flow direction at an angle of 25-50 °.
6. A circulating pump for use in a selenium silver gold production process according to claim 5, characterized in that the first flow guide (4) has a central angle Q, and the second flow guide (5) also has a central angle Q; central angle Q =5-30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011466954.3A CN112483417B (en) | 2020-12-14 | 2020-12-14 | Circulating pump for selenium silver gold production process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011466954.3A CN112483417B (en) | 2020-12-14 | 2020-12-14 | Circulating pump for selenium silver gold production process |
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| Publication Number | Publication Date |
|---|---|
| CN112483417A CN112483417A (en) | 2021-03-12 |
| CN112483417B true CN112483417B (en) | 2022-12-27 |
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| CN202011466954.3A Active CN112483417B (en) | 2020-12-14 | 2020-12-14 | Circulating pump for selenium silver gold production process |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113498663B (en) * | 2021-08-10 | 2023-01-31 | 潢川县鑫永生生态农业科技有限公司 | A irrigate, fertilizer injection unit for orchard |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2069606A (en) * | 1980-01-19 | 1981-08-26 | Klein Schanzlin & Becker Ag | Centrifugal pump having a double volute casing |
| EP3176439A2 (en) * | 2015-11-12 | 2017-06-07 | Panasonic Intellectual Property Management Co., Ltd. | Centrifugal pump with a volute having a slanted wall |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE470507B (en) * | 1992-11-13 | 1994-06-20 | Flygt Ab Itt | Pump housing for centrifugal pump, which pump housing is provided with an axially directed partition, which wall is slotted in its longitudinal direction |
| DE19740590A1 (en) * | 1997-09-15 | 1999-03-18 | Klein Schanzlin & Becker Ag | Volute casing pump |
| EP2567099B1 (en) * | 2010-05-07 | 2016-07-13 | Sulzer Management AG | Volute shaped pump casing with splitter rib |
| EP3401550B1 (en) * | 2017-05-09 | 2024-02-14 | Sulzer Management AG | Volute casing for a centrifugal pump and centrifugal pump |
| CN113498663B (en) * | 2021-08-10 | 2023-01-31 | 潢川县鑫永生生态农业科技有限公司 | A irrigate, fertilizer injection unit for orchard |
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2020
- 2020-12-14 CN CN202011466954.3A patent/CN112483417B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2069606A (en) * | 1980-01-19 | 1981-08-26 | Klein Schanzlin & Becker Ag | Centrifugal pump having a double volute casing |
| EP3176439A2 (en) * | 2015-11-12 | 2017-06-07 | Panasonic Intellectual Property Management Co., Ltd. | Centrifugal pump with a volute having a slanted wall |
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