CN116287757A - Supergravity extraction process for wet copper smelting process - Google Patents
Supergravity extraction process for wet copper smelting process Download PDFInfo
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- 238000000605 extraction Methods 0.000 title claims abstract description 102
- 238000000034 method Methods 0.000 title claims abstract description 40
- 239000010949 copper Substances 0.000 title claims abstract description 37
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 36
- 230000008569 process Effects 0.000 title claims abstract description 35
- 238000003723 Smelting Methods 0.000 title claims abstract description 21
- 239000012071 phase Substances 0.000 claims abstract description 89
- 239000007788 liquid Substances 0.000 claims abstract description 80
- 239000000463 material Substances 0.000 claims abstract description 36
- 238000002156 mixing Methods 0.000 claims abstract description 18
- 239000002994 raw material Substances 0.000 claims abstract description 15
- 238000012546 transfer Methods 0.000 claims abstract description 12
- 239000003792 electrolyte Substances 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 43
- 239000000945 filler Substances 0.000 claims description 16
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 14
- 239000011259 mixed solution Substances 0.000 claims description 12
- 239000000243 solution Substances 0.000 claims description 10
- 239000003350 kerosene Substances 0.000 claims description 8
- 239000008346 aqueous phase Substances 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 238000012856 packing Methods 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 238000007865 diluting Methods 0.000 claims description 2
- 230000005501 phase interface Effects 0.000 abstract description 7
- 239000007791 liquid phase Substances 0.000 abstract description 6
- 239000012530 fluid Substances 0.000 abstract description 4
- 238000002474 experimental method Methods 0.000 abstract description 3
- 238000004458 analytical method Methods 0.000 description 4
- 238000004070 electrodeposition Methods 0.000 description 4
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 3
- 229910001431 copper ion Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009854 hydrometallurgy Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000012074 organic phase Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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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
- C22B15/00—Obtaining copper
- C22B15/0063—Hydrometallurgy
- C22B15/0065—Leaching or slurrying
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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
- C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
- C22B3/26—Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds
- C22B3/30—Oximes
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- 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
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- Life Sciences & Earth Sciences (AREA)
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Abstract
The invention discloses a supergravity extraction process for a wet copper smelting process, which comprises the following steps of: conveying raw materials; entering materials; extracting; circularly extracting; standing and separating liquid; obtaining a back extraction oil phase; conveying raw materials; back extraction; circularly back-extracting; and standing and separating to obtain wet copper smelting electrolyte, and finishing the extraction and back extraction processes. The supergravity device greatly increases the phase interface area in the liquid-liquid heterogeneous mixing process, accelerates the updating speed of the phase interface and strengthens the mass transfer process of the liquid phase and the liquid phase; meanwhile, the extraction process of the invention simplifies the traditional extraction process, greatly shortens the residence time of the fluid, and through experiments, the used supergravity device mixes two phases in extremely short time, and simultaneously achieves the industrial extraction rate.
Description
Technical Field
The invention relates to the technical field of extraction technology. And more particularly to a supergravity extraction process for wet copper smelting processes.
Background
The wet copper smelting is one of the hydrometallurgy and has the advantages of low investment, low cost, little environmental pollution, high utilization rate of mineral resources and the like. The history of wet copper smelting can be traced to the first six and seven centuries of the metric element. China is the earliest country in the world for extracting copper by adopting hydrometallurgy, however, the development of the wet copper smelting process in China is slower. The industrial scale wet copper smelting in China began in the beginning of the 60 s of the last century, but many wet copper refineries were forced to shut down for various technical or economic reasons. With the development of the chemical industry, organic extractants have emerged that can effectively extract copper from copper-depleted solutions. After the first industrial-scale leaching-extraction-electrodeposition factory in the world was built from the Ore of Ore, america, li San, 1968, the leaching-extraction-electrodeposition process was developed and completed, and the copper content produced by this process in the world currently exceeded 200 ten thousand tons/year, accounting for 20% of the copper content in the world's minerals.
The wet copper smelting method mainly comprises four steps: dissolving copper in sulfuric acid medium-leaching; extracting copper into an organic phase by adopting an extractant; back-extracting copper into water phase with sulfuric acid solution-back-extracting: the back extraction liquid is electrolyte and is deposited with copper-electro deposition method.
Among the main equipment used for extraction are three: a mixer-settler, an extraction tower and a centrifugal extractor. Most copper extraction plants employ mixer-settler tanks. When the copper content of the solution reaches 40-50 g/L through extraction and back extraction, the electro-deposition requirement can be met. However, the industrially used mixer-settler has the defects of low extraction efficiency and large equipment volume, and has the core problems of small internal phase interface area in the device and low liquid-liquid heterogeneous mass transfer efficiency, so that the mixer-settler is the most effective means for reducing the equipment volume and improving the extraction efficiency and strengthening the extraction process.
The extraction process is rapidly developed towards diversification, greenization and refinement, and the traditional extraction equipment is more and more difficult to meet the production requirement.
Disclosure of Invention
The invention aims to provide a supergravity extraction process for a wet copper smelting process. The supergravity device greatly increases the phase interface area in the liquid-liquid heterogeneous mixing process, accelerates the updating speed of the phase interface and strengthens the mass transfer process of the liquid phase and the liquid phase; meanwhile, the extraction process of the invention simplifies the traditional extraction process, greatly shortens the residence time of the fluid, and through experiments, the used supergravity device mixes two phases in extremely short time, and simultaneously achieves the industrial extraction rate.
In order to solve the technical problems, the invention adopts the following technical scheme:
a supergravity extraction process for wet copper smelting process utilizes a supergravity device to realize oil-water two-phase mixing and mass transfer in the extraction and back extraction processes.
The super-gravity extraction process comprises the following steps:
s1, conveying an extracted oil phase from a raw material tank to an oil phase material inlet of a hypergravity device by using a conveying pump;
s2, conveying the extracted water phase from a raw material tank to a water phase material inlet of a hypergravity device by using a conveying pump;
s3, respectively feeding the extracted oil phase and the extracted water phase solution into a supergravity device from two liquid inlets, and adjusting the rotation speed of the filler; the two materials are premixed by a premixer, are preliminarily mixed, then enter a liquid distributor with injection holes to be injected into the rotating filler, and the high-speed rotating filler shears the materials into liquid films, liquid drops or liquid lines, so that the two materials are mixed more uniformly;
s4, after all the feed liquid is pumped into the supergravity device, starting a circulating pump, and returning the mixed liquid flowing out of the liquid outlet into the product tank to the supergravity device for further mixing; the feed liquid circulates in the supergravity device for many times through the circulating pump;
s5, standing the obtained mixed solution after the mixing is finished, and separating the mixed solution; obtaining a back extraction oil phase;
s6, conveying the strip oil phase to an oil phase material inlet of the hypergravity device by using a conveying pump;
s7, conveying the strip water phase to a water phase material inlet of the hypergravity device by using a conveying pump;
s8, respectively feeding the strip oil phase and strip water phase solution into a supergravity device from two liquid inlets; the two materials are premixed by a premixer, are preliminarily mixed, then enter a liquid distributor with injection holes to be injected into the rotating filler, and the high-speed rotating filler shears the materials into liquid films, liquid drops or liquid lines, so that the two materials are mixed more uniformly;
s9, starting a circulating pump after all the feed liquid is pumped into the supergravity device, and returning the mixed liquid flowing out of the liquid outlet into the product tank to the supergravity device for further mixing; the feed liquid circulates in the supergravity device for many times through the circulating pump;
s10, after mixing, conveying the obtained mixed solution to a clarifying tank for standing, and separating the mixed solution to obtain the wet copper smelting electrolyte, thereby completing the extraction and back extraction processes.
In the step S1, the oil phase raw material is formed by diluting any one of Lix984N, M5640 and AcorgaOPT5510 industrial copper extractant with kerosene; preferably, the mass ratio of the extractant to kerosene is in the range of 0.05 to 0.25.
Preferably, in step S3, the volume flow ratio of the aqueous phase to the oil phase is in the range of 0.8 to 2.
Preferably, in the steps S5 and S9, the standing time ranges from 5 to 30min; more preferably, in steps S5 and S9, the standing time is in the range of 10 to 15 minutes.
Preferably, in the step S7, the mass concentration of sulfuric acid in the stripping water phase ranges from 200 g/L to 280g/L.
Preferably, in step S8, the volume flow ratio of the aqueous phase to the oil phase is in the range of 0.8 to 2.5.
Preferably, in the steps S3 and S8, the rotation speed range of the packing of the hypergravity device is 100-2400 r/min.
Preferably, in the steps S3 and S8, the temperature range in the hypergravity device is 0-60 ℃; more preferably, in the steps S3 and S8, the temperature in the hypergravity device ranges from 20 to 40 ℃.
Preferably, in the steps S4 and S9, the feed liquid circulates 1 to 8 times in the hypergravity device through a circulating pump; more preferably, in steps S4 and S9, the feed liquid is circulated 3 to 5 times in the supergravity device by the circulation pump.
The filler material of the hypergravity device is any one of ceramic, plastic, corrosion-resistant metal and other materials.
Any range recited in the invention includes any numerical value between the endpoints and any sub-range of any numerical value between the endpoints or any numerical value between the endpoints.
Unless otherwise indicated, all starting materials herein are commercially available, and the equipment used in the present invention may be conventional in the art or may be conventional in the art.
Compared with the prior art, the invention has the following beneficial effects：
1) The supergravity device greatly increases the phase interface area in the liquid-liquid heterogeneous mixing process, accelerates the updating speed of the phase interface and strengthens the mass transfer process of the liquid phase and the liquid phase.
2) The extraction process of the invention simplifies the traditional extraction process, greatly shortens the residence time of the fluid, and through experiments, the used supergravity device mixes two phases in extremely short time, and simultaneously achieves the industrial extraction rate.
Drawings
The following describes the embodiments of the present invention in further detail with reference to the drawings
FIG. 1 shows a schematic diagram of system equipment used in the super gravity extraction process in the wet copper smelting process of the present invention;
Detailed Description
In order to more clearly illustrate the present invention, the present invention will be further described with reference to preferred embodiments and the accompanying drawings. Like parts in the drawings are denoted by the same reference numerals. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and that this invention is not limited to the details given herein.
Various cross-sectional views according to disclosed embodiments of the invention are shown in the accompanying drawings. The figures are not drawn to scale, wherein certain details are exaggerated for clarity of presentation and may have been omitted. The shapes of the various regions, layers and relative sizes, positional relationships between them shown in the drawings are merely exemplary, may in practice deviate due to manufacturing tolerances or technical limitations, and the skilled person may additionally design regions/layers having different shapes, sizes, relative positions as actually required.
At present, the extraction process is rapidly developed towards diversification, greenization and refinement, and the production needs of traditional extraction equipment are more and more difficult to meet.
Based on the above, as one aspect of the invention, the invention provides a supergravity extraction process for a wet copper smelting process, and in the extraction and back extraction processes, the supergravity device is utilized to realize the mixing and mass transfer of oil-water two phases.
The super-gravity extraction process comprises the following steps:
s1, conveying an extracted oil phase from a raw material tank to an oil phase material inlet of a hypergravity device by using a conveying pump;
s2, conveying the extracted water phase from a raw material tank to a water phase material inlet of a hypergravity device by using a conveying pump;
s3, respectively feeding the extracted oil phase and the extracted water phase solution into a hypergravity device from two liquid inlets; the two materials are premixed by a premixer, are preliminarily mixed, then enter a liquid distributor with injection holes to be injected into the rotating filler, and the high-speed rotating filler shears the materials into liquid films, liquid drops or liquid lines, so that the two materials are mixed more uniformly;
s4, after all the feed liquid is pumped into the supergravity device, starting a circulating pump, and returning the mixed liquid flowing out of the liquid outlet into the product tank to the supergravity device for further mixing; the feed liquid circulates in the supergravity device for many times through the circulating pump;
s5, standing the obtained mixed solution after the mixing is finished, and separating the mixed solution; obtaining a back extraction oil phase;
s6, conveying the strip oil phase to an oil phase material inlet of the hypergravity device by using a conveying pump;
s7, conveying the strip water phase to a water phase material inlet of the hypergravity device by using a conveying pump;
s8, respectively feeding the strip oil phase and strip water phase solution into a supergravity device from two liquid inlets; the two materials are premixed by a premixer, are preliminarily mixed, then enter a liquid distributor with injection holes to be injected into the rotating filler, and the high-speed rotating filler shears the materials into liquid films, liquid drops or liquid lines, so that the two materials are mixed more uniformly;
s9, starting a circulating pump after all the feed liquid is pumped into the supergravity device, and returning the mixed liquid flowing out of the liquid outlet into the product tank to the supergravity device for further mixing; the feed liquid circulates in the supergravity device for many times through the circulating pump;
s10, after mixing, conveying the obtained mixed solution to a clarifying tank for standing, and separating the mixed solution to obtain the wet copper smelting electrolyte, thereby completing the extraction and back extraction processes.
Referring to fig. 1, a schematic diagram of a system device used in the above-mentioned hypergravity extraction process mainly includes:
an extraction oil phase raw material tank 1; extracting a water phase raw material tank 2; an extraction supergravity device 3; an extraction product tank 4; an extraction clarifier 5; a strip oil phase raw material tank 6; a strip water phase raw material tank 7; a back extraction supergravity device 8; a stripping product tank 9; a stripping clarifier 10.
According to some embodiments of the invention, in step S1, the oil phase raw material is diluted by any one of Lix984N, M5640 and acogaopt 5510 industrial copper extractant and kerosene, and the mass ratio of the extractant to the kerosene is in the range of 0.05-0.25.
According to certain embodiments of the invention, in step S3, the volume flow ratio of the aqueous phase to the oil phase ranges from 0.8 to 2.
According to certain embodiments of the present invention, in steps S5 and S9, the time of the standing is in the range of 5 to 30 minutes; preferably, in steps S5 and S9, the standing time is in the range of 10 to 15 minutes.
According to certain embodiments of the invention, in step S7, the sulfuric acid mass concentration in the strip water phase ranges from 200 to 280g/L.
According to certain embodiments of the invention, in step S8, the volume flow ratio of the aqueous phase to the oil phase ranges from 0.8 to 2.5.
According to certain embodiments of the present invention, preferably, in steps S3 and S8, the packing speed of the supergravity device ranges from 100 to 2400r/min.
According to certain embodiments of the present invention, preferably, in steps S3 and S8, the temperature in the hypergravity device ranges from 0 to 60 ℃; more preferably, the temperature ranges from 20 to 40 ℃.
According to certain embodiments of the present invention, preferably, in steps S4 and S9, the feed liquid is circulated 1 to 8 times in the supergravity device by a circulation pump; more preferably, in steps S4 and S9, the feed liquid is circulated 3 to 5 times in the supergravity device by the circulation pump.
According to some embodiments of the present invention, the filler material of the supergravity device is any one of ceramic, plastic, corrosion-resistant metal, and the like.
Example 1
The configuration of the extractant and the oil-water phase in the extraction and back extraction process are compared with the relevant data in the 4 ten thousand ton/year electrodeposited copper project case of Congo diagram Lu mining company.
A super-gravity extraction process in a wet copper smelting process comprises the following steps:
wherein stainless steel wire gauze packing is used in the hypergravity device.
The water phase in the extraction process is CuSO with the copper ion concentration of about 13.6g/L 4 The aqueous solution and the oil phase are mixed liquid of Lix984N and sulfonated kerosene according to the mass ratio of 3:17. Corresponding to the water phase flow of 100mL/min, the oil phase flow of 130mL/min and the rotating speed range of 900-2100 r/min, sampling from a liquid outlet without starting a circulating pump in the process, standing the sample for 10min, and separating the liquid to take the lower water phase for analysis;
the water phase in the back extraction process is sulfuric acid solution with the mass concentration of 210g/L, and the oil phase is extraction liquid enriched with copper ions. The flow rate of the corresponding water phase is 82mL/min, the flow rate of the oil phase is 148mL/min, the rotating speed range is 900-2100 r/min, the sample is sampled from the liquid outlet, and the sample is kept stand for 10min and then separated to take the lower water phase for analysis.
As a result, the process provided by the invention effectively strengthens the liquid-liquid heterogeneous mass transfer process, wherein the extraction rate is improved from 17.7% to 28.8% and is improved by 62.7% when the rotating speed is improved from 900r/min to 2100r/min in the extraction process. In the back extraction process, when the rotating speed is increased from 900r/min to 2100r/min, the extraction rate is increased from 10.7% to 20.9%, and the extraction rate is increased by 95.3%.
Example 2
It can be seen from experimental example 1 that the supergravity device does effectively strengthen the heterogeneous mass transfer process of liquid and liquid, and the extraction rate obtained at present is still low according to relevant industrial data, which indicates that the corresponding mass transfer process still does not reach equilibrium even at the rotation speed of 2100 r/min.
In order to further improve the extraction rate and meet the industrial requirements, the method for improving the residence time of fluid in the supergravity device is an effective means, the original device is improved, a circulating pump is arranged at the outlet of the device, and the feed liquid at the outlet is further mixed by circulating the feed liquid back to the device.
A super-gravity extraction process in a wet copper smelting process comprises the following steps:
wherein stainless steel wire gauze packing is used in the hypergravity device.
The water phase in the extraction process is Cu 2+ CuSO at a concentration of about 13.6g/L 4 The aqueous solution and the oil phase are mixed liquid of Lix984N and kerosene according to the mass ratio of 3:17. The flow rate of the water phase is 100mL/min, the flow rate of the oil phase is 130mL/min, the rotating speed is 900-2100 r/min, the water phase is circulated for 1-5 times in a hypergravity device through a circulating pump, the water phase is sampled from a liquid outlet, and the lower water phase is separated and taken out for analysis after the sample is kept stand for 10 min.
The water phase in the back extraction process is sulfuric acid solution with the mass concentration of 210g/L, and the oil phase is extraction liquid enriched with copper ions. The corresponding water phase flow is 82mL/min, the oil phase flow is 148mL/min, the rotating speed ranges from 900r/min to 2100r/min, the extraction is carried out for 1 to 5 times respectively, the liquid outlet is used for sampling, the sample is kept stand for 10min, and the lower water phase is separated for analysis. The experimental results of the extraction process are shown in Table 1 and the experimental results of the back extraction process are shown in Table 2.
TABLE 1 Experimental results of extraction procedure
TABLE 2 Experimental results of the stripping procedure
The result shows that the experimental results corresponding to the extraction process and the back extraction process after the rotation speed of 2100r/min is maintained and is greater than or equal to four times of extraction can exceed the industrial extraction rate, and the supergravity extraction process in the wet copper smelting process is feasible.
Comparative example 1
Example 2 was repeated, with the only differences that: the rotation speed is kept at 2100r/min, the ratio of the extraction to the water-oil phase in the back extraction process is kept unchanged, and the total flow of the water-oil phase is 230mL/min,345mL/min and 460mL/min respectively.
Through detection, when the total flow is changed, the extraction rate change of the extraction process and the back extraction process under the same rotation speed and extraction times is smaller, wherein the extraction rate difference of the extraction process is not more than 3%, the extraction rate difference of the back extraction process is not more than 2%, and the experimental results of the extraction process and the back extraction process after the fourth extraction can exceed the industrial extraction rate.
The supergravity device has extremely strong mass transfer strengthening effect, and the mass transfer effect is less influenced by the change of the treatment capacity.
In summary, the oil-water two phases are quickly mixed under the action of centrifugal force by the hypergravity device, which is favorable for the extraction process and strengthens the traditional extraction process.
It is to be understood that the above examples of the present invention are provided by way of illustration only and not by way of limitation of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. Not all embodiments are exhaustive. All obvious changes or modifications which come within the spirit of the invention are desired to be protected.
Claims (10)
1. A supergravity extraction process for a wet copper smelting process is characterized in that: in the extraction and back extraction processes, the super-gravity device is utilized to realize the mixing and mass transfer of oil-water two phases;
the super-gravity extraction process comprises the following steps:
s1, conveying an extracted oil phase from a raw material tank to an oil phase material inlet of a hypergravity device by using a conveying pump;
s2, conveying the extracted water phase from a raw material tank to a water phase material inlet of a hypergravity device by using a conveying pump;
s3, respectively feeding the extracted oil phase and the extracted water phase solution into a hypergravity device from two liquid inlets; the two materials are premixed by a premixer, are preliminarily mixed, then enter a liquid distributor with injection holes to be injected into the rotating filler, and the high-speed rotating filler shears the materials into liquid films, liquid drops or liquid lines, so that the two materials are mixed more uniformly;
s4, after all the feed liquid is pumped into the supergravity device, starting a circulating pump, and returning the mixed liquid flowing out of the liquid outlet into the product tank to the supergravity device for further mixing; the feed liquid circulates in the supergravity device for many times through the circulating pump;
s5, standing the obtained mixed solution after the mixing is finished, and separating the mixed solution; obtaining a back extraction oil phase;
s6, conveying the strip oil phase to an oil phase material inlet of the hypergravity device by using a conveying pump;
s7, conveying the strip water phase to a water phase material inlet of the hypergravity device by using a conveying pump;
s8, respectively feeding the strip oil phase and strip water phase solution into a supergravity device from two liquid inlets; the two materials are premixed by a premixer, are preliminarily mixed, then enter a liquid distributor with injection holes to be injected into the rotating filler, and the high-speed rotating filler shears the materials into liquid films, liquid drops or liquid lines, so that the two materials are mixed more uniformly;
s9, starting a circulating pump after all the feed liquid is pumped into the supergravity device, and returning the mixed liquid flowing out of the liquid outlet into the product tank to the supergravity device for further mixing; the feed liquid circulates in the supergravity device for many times through the circulating pump;
s10, after mixing, conveying the obtained mixed solution to a clarifying tank for standing, and separating the mixed solution to obtain the wet copper smelting electrolyte, thereby completing the extraction and back extraction processes.
2. The process according to claim 1, characterized in that: in the step S1, the oil phase raw material is formed by diluting any one of Lix984N, M5640 and AcorgaOPT5510 industrial copper extractant with kerosene; preferably, the mass ratio of the extractant to kerosene is in the range of 0.05 to 0.25.
3. The process according to claim 1, characterized in that: preferably, in step S3, the volume flow ratio of the aqueous phase to the oil phase is in the range of 0.8 to 2.
4. The process according to claim 1, characterized in that: preferably, in the steps S5 and S9, the standing time ranges from 5 to 30min; more preferably, in steps S5 and S9, the standing time is in the range of 10 to 15 minutes.
5. The process according to claim 1, characterized in that: preferably, in the step S7, the mass concentration of sulfuric acid in the stripping water phase ranges from 200 g/L to 280g/L.
6. The process according to claim 1, characterized in that: preferably, in step S8, the volume flow ratio of the aqueous phase to the oil phase is in the range of 0.8 to 2.5.
7. The process according to claim 1, characterized in that: preferably, in the steps S3 and S8, the temperature range in the hypergravity device is 0-60 ℃; more preferably, the temperature ranges from 20 to 40 ℃.
8. The process according to claim 1, characterized in that: preferably, in the steps S3 and S8, the rotation speed range of the packing of the hypergravity device is 100-2400 r/min.
9. The process according to claim 1, characterized in that: preferably, in the steps S4 and S9, the feed liquid circulates 1 to 8 times in the hypergravity device through a circulating pump; more preferably, in steps S4 and S9, the feed liquid is circulated 3 to 5 times in the supergravity device by the circulation pump.
10. The process according to claim 1, characterized in that: the filler material of the hypergravity device is any one of ceramic, plastic, corrosion-resistant metal and other materials.
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| CN118006916A (en) * | 2024-04-07 | 2024-05-10 | 北京科技大学 | In-situ online copper removal process for crude lead |
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| CN109666803A (en) * | 2017-10-17 | 2019-04-23 | 王磊 | A kind of new method of hydrometallurgy copper |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118006916A (en) * | 2024-04-07 | 2024-05-10 | 北京科技大学 | In-situ online copper removal process for crude lead |
| CN118006916B (en) * | 2024-04-07 | 2024-06-07 | 北京科技大学 | In-situ online copper removal process for crude lead |
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