CN116065195A - Method for improving unit washing water quality in electrolytic refining - Google Patents
Method for improving unit washing water quality in electrolytic refining Download PDFInfo
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- CN116065195A CN116065195A CN202211479752.1A CN202211479752A CN116065195A CN 116065195 A CN116065195 A CN 116065195A CN 202211479752 A CN202211479752 A CN 202211479752A CN 116065195 A CN116065195 A CN 116065195A
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- washing water
- water tank
- washing
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/12—Electrolytic production, recovery or refining of metals by electrolysis of solutions of copper
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
- C25C7/06—Operating or servicing
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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
Abstract
The invention discloses a method for improving the washing water quality of a unit in electrolytic refining, which comprises the following specific processes: on-line monitoring the copper sulfate concentration of the washing water in the washing water tank of the cathode copper stripping unit, and when the real-time copper sulfate concentration is monitored to exceed a preset copper sulfate concentration threshold value, sending the washing water in the washing water tank of the cathode copper stripping unit into the washing water tank of the anode scrap washing unit, and adding new water into the washing water tank of the cathode copper stripping unit to supplement the washing water quantity so as to reduce the copper sulfate concentration of the washing water of the cathode copper stripping unit; the washing water tank of the anode scrap washing machine unit eliminates part of anode mud and water settled at the bottom so as to reduce the content of the anode mud in the washing water of the anode scrap washing machine unit, and simultaneously, a space is left for receiving the washing water without the anode mud from the cathode copper stripping machine unit. The invention can effectively and rapidly improve the washing water quality without affecting the production.
Description
Technical Field
The invention relates to the technical field of copper electrorefining operation, in particular to a method for improving the washing water quality of a cathode copper stripping unit and a residual anode washing unit in copper electrorefining.
Background
At present, one of the operation steps in the electrolytic refining of copper is to clean the produced high-purity cathode copper, and the operation step is arranged at a washing station of a cathode copper stripping unit. The main purpose is to clean the residual copper sulfate solution on the surface of the high-purity cathode copper, reduce the sulfur content of the cathode copper and improve the quality of the cathode copper. Meanwhile, another operation step is to clean the anode slime and copper sulfate solution on the anode slime, so that the anode slime is recovered maximally, and meanwhile, the crystallization on the anode slime is reduced, and the loss of noble metals is reduced.
However, in the production process, after washing water of the cathode copper stripping unit is washed for a plurality of times, the copper sulfate content in the washing water is higher and higher, after long-term washing, the washing water with high copper sulfate content can leave a copper sulfate solution on a cathode plate in the washing operation process, and after water volatilizes, copper sulfate crystals are separated out, so that the quality of cathode copper is influenced, and sales is influenced. The existing method is to increase the water changing frequency to reduce the content of copper sulfate in the washing water so as to solve the problem, but the increased water changing frequency can enlarge the volume of electrolyte of the whole electrolysis system, the electrolyte is stored everywhere, a series of production operation steps are disturbed, the volume of the electrolyte is enlarged, and the parameters of each system are changed accordingly, so that the control of the integral additive is influenced, and the quality of cathode copper is influenced. In addition, after the washing water of the anode scrap washing machine set is used frequently, the anode scrap content in the washing water is increased, so that the anode scrap washing effect is poor, the noble metal is carried by the anode scrap, the anode scrap recovery rate is low, and the problem of overlarge electrolyte volume can also occur when the water changing frequency is increased.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a method for improving the water quality of unit washing in electrolytic refining.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a method for improving the unit washing water quality in electrolytic refining comprises the following specific processes:
on-line monitoring the copper sulfate concentration of the washing water in the washing water tank of the cathode copper stripping unit, and when the real-time copper sulfate concentration is monitored to exceed a preset copper sulfate concentration threshold value, sending the washing water in the washing water tank of the cathode copper stripping unit into the washing water tank of the anode scrap washing unit, and adding new water into the washing water tank of the cathode copper stripping unit to supplement the washing water quantity so as to reduce the copper sulfate concentration of the washing water of the cathode copper stripping unit; the washing water tank of the anode scrap washing machine unit eliminates part of anode mud and water settled at the bottom so as to reduce the content of the anode mud in the washing water of the anode scrap washing machine unit, and simultaneously, a space is left for receiving the washing water without the anode mud from the cathode copper stripping machine unit.
Further, the central control PLC collects the copper sulfate concentration of the washing water in the washing water tank of the cathode copper stripping unit in real time and judges whether the copper sulfate concentration exceeds a preset copper sulfate concentration threshold in real time, if yes, a liquid level signal of the washing water tank of the cathode copper stripping unit is collected, if the current liquid level of the washing water tank of the cathode copper stripping unit does not reach the highest liquid level, the central control PLC directly controls the execution of the new water replenishing until the highest liquid level is reached, at the moment, the copper sulfate concentration of the washing water in the washing water tank of the cathode copper stripping unit is collected again, if the preset copper sulfate concentration threshold is not exceeded, the production is continued, if the preset copper sulfate concentration threshold is still exceeded, the central control PLC collects the liquid level of the washing water tank of the anode copper stripping unit, if the liquid level in the washing water tank of the anode copper stripping unit is lower than a preset low liquid level threshold, the central control PLC directly controls the execution of the new water replenishing of the washing water in the washing water tank of the cathode copper stripping unit to the washing water tank of the anode stripping unit, and the new water replenishing the washing water in the washing water tank of the cathode copper stripping unit; if the liquid level in the washing water tank of the anode scrap washing machine set is higher than a preset high liquid level threshold, the central control PLC controls to open a drain outlet at the bottom of the washing water tank of the anode scrap washing machine set, more water with the bottom of anode mud settled is discharged, when the liquid level of the washing water tank of the anode scrap washing machine set is reduced to a preset half liquid level threshold, the drain outlet is closed, and then control to execute the process of conveying the washing water in the washing water tank of the cathode copper stripping machine set to the washing water tank of the anode scrap washing machine set until the liquid level in the washing water tank of the anode scrap washing machine set reaches the highest liquid level.
Furthermore, the washing water tank of the cathode copper stripping unit is communicated with a steam-water mixing heater through a control valve, the steam-water mixing heater is used for heating new water entering the washing water tank of the cathode copper stripping unit to a set temperature, and the control valve is used for controlling the amount of the new water to be supplemented; the steam-water mixing heater and the control valve are both in communication connection with the central control PLC, and the central control PLC controls the temperature of the fresh water by controlling the steam quantity and the water quantity entering the steam-water mixing heater.
Further, a copper sulfate concentration on-line monitoring instrument and a liquid level meter are arranged on the washing water tank of the cathode copper stripping unit and are respectively used for on-line monitoring the copper sulfate concentration and the liquid level of washing water in the washing water tank of the cathode copper stripping unit; and the copper sulfate concentration on-line monitoring instrument and the liquid level meter are both in communication connection with the central control PLC.
Furthermore, the washing water tank of the cathode copper stripping unit is communicated with the washing water tank of the anode scrap washing unit through a water pump and a corresponding pipeline; the drain outlet at the bottom of the washing water tank of the anode scrap washing machine set is provided with an automatic valve; the water pump and the automatic valve are both in communication connection with a central control PLC, and the central control PLC drives the washing water tank of the cathode copper stripping unit into the washing water tank of the anode scrap washing unit by controlling the water pump to work, and controls the opening and closing of the sewage outlet by controlling the opening and closing of the automatic valve.
Furthermore, a liquid level meter is arranged on the washing water tank of the anode scrap washing unit and used for monitoring the liquid level of the washing water tank of the anode scrap washing unit, and the liquid level meter is in communication connection with a central control PLC.
The invention has the beneficial effects that:
in the method, the copper sulfate concentration of the cathode copper washing water is monitored in real time, so that the water quality can be detected in time after the water quality is changed, and new water is fed in time to improve the water quality;
in addition, the anode slime liquid settled at the bottom in the washing water tank of the anode scrap washing machine set is discharged, and then cathode copper washing water with the copper sulfate concentration exceeding the standard is fed into the anode scrap washing machine set to serve as anode scrap washing water, so that the washing water can be reused, the washing water is firstly used for washing cathode copper and then used for washing anode scrap, and the washing water quality of the anode scrap can be improved rapidly.
In addition, the method of the invention does not increase the electrolyte volume of the electrolysis system, and the whole process does not need machine unit shutdown, thereby not affecting production.
The method adopts the central control PLC to realize the integral linkage control of the cross-machine set, thereby realizing the automatic control of the water level and the water quality.
Detailed Description
The present invention will be further described below, and it should be noted that, while the present embodiment provides a detailed implementation manner and a specific operation process on the premise of the present technical solution, the protection scope of the present invention is not limited to the present embodiment.
The embodiment provides a method for improving the unit washing water quality in electrolytic refining, which comprises the following specific processes:
on-line monitoring the copper sulfate concentration of the washing water in the washing water tank of the cathode copper stripping unit, and when the real-time copper sulfate concentration is monitored to exceed a preset copper sulfate concentration threshold value, sending the washing water in the washing water tank of the cathode copper stripping unit into the washing water tank of the anode scrap washing unit, and adding new water into the washing water tank of the cathode copper stripping unit to supplement the washing water quantity so as to reduce the copper sulfate concentration of the washing water of the cathode copper stripping unit; the anode mud and water in the bottom of the washing water tank of the anode scrap washing unit are removed, so that the anode mud content in the washing water of the anode scrap washing unit is reduced, and meanwhile, a space is reserved for receiving the washing water without anode mud from the cathode copper stripping unit, so that the washing water quality in the cathode copper stripping unit and the anode scrap washing unit is improved, the volume of electrolyte in the system is not increased, and the washing water quantity is utilized to the maximum extent.
More specifically, in this embodiment, the central control PLC collects the copper sulfate concentration of the washing water in the washing water tank of the cathode copper stripping unit in real time and judges whether the copper sulfate concentration exceeds a preset copper sulfate concentration threshold in real time, if yes, collects a liquid level signal of the washing water tank of the cathode copper stripping unit, if the current liquid level of the washing water tank of the cathode copper stripping unit does not reach the highest liquid level, the central control PLC directly controls to execute the new water replenishment until the highest liquid level is reached, at this time, collects the copper sulfate concentration of the washing water in the washing water tank of the cathode copper stripping unit again, if the copper sulfate concentration does not exceed the preset copper sulfate concentration threshold, continues the production, if the copper sulfate concentration threshold still exceeds the preset copper sulfate concentration threshold, the central control PLC collects the liquid level of the washing water tank of the anode copper stripping unit, for example, if the liquid level in the washing water tank of the anode copper stripping unit is lower than the preset low liquid level threshold, the central control PLC directly controls to execute the new water replenishment of the washing water to be delivered to the washing water tank of the anode copper stripping unit, and execute the new water replenishment to the washing water tank of the cathode copper stripping unit; if the liquid level in the washing water tank of the anode scrap washing machine set is higher than a preset high liquid level threshold, the central control PLC controls to open a drain outlet at the bottom of the washing water tank of the anode scrap washing machine set, more water with the bottom of anode mud settled is discharged, when the liquid level of the washing water tank of the anode scrap washing machine set is reduced to a preset half liquid level threshold, the drain outlet is closed, and then control to execute the process of conveying the washing water in the washing water tank of the cathode copper stripping machine set to the washing water tank of the anode scrap washing machine set until the liquid level in the washing water tank of the anode scrap washing machine set reaches the highest liquid level.
The repeated circulation makes the washing water reused, improves the water quality of the washing water, improves the washing quality, simultaneously maximally utilizes the water and reduces the pressure of the system. In the process of improving water quality, because the liquid level is automatically controlled and the new water is water meeting the preset washing temperature, the whole process does not need to be stopped and production is not affected.
In the embodiment, a washing water tank of the cathode copper stripping unit is communicated with a steam-water mixing heater through a control valve, the steam-water mixing heater is used for heating new water entering the washing water tank of the cathode copper stripping unit to a set temperature, and the control valve is used for controlling the amount of the new water to be supplemented; the steam-water mixing heater and the control valve are both in communication connection with the central control PLC, and the central control PLC controls the temperature of the fresh water by controlling the steam quantity and the water quantity entering the steam-water mixing heater.
In this embodiment, a copper sulfate concentration on-line monitoring instrument and a liquid level meter are arranged on a washing water tank of the cathode copper stripping unit, and are respectively used for on-line monitoring of the copper sulfate concentration and the liquid level of washing water in the washing water tank of the cathode copper stripping unit; and the copper sulfate concentration on-line monitoring instrument and the liquid level meter are both in communication connection with the central control PLC.
In the embodiment, a washing water tank of the cathode copper stripping unit is communicated with a washing water tank of the anode scrap washing unit through a water pump and a corresponding pipeline; the drain outlet at the bottom of the washing water tank of the anode scrap washing machine set is provided with an automatic valve; the water pump and the automatic valve are both in communication connection with a central control PLC, and the central control PLC drives the washing water tank of the cathode copper stripping unit into the washing water tank of the anode scrap washing unit by controlling the water pump to work, and controls the opening and closing of the sewage outlet by controlling the opening and closing of the automatic valve.
In this embodiment, a liquid level meter is arranged on the washing water tank of the anode scrap washing unit and is used for monitoring the liquid level of the washing water tank of the anode scrap washing unit, and the liquid level meter is in communication connection with a central control PLC.
Various modifications and variations of the present invention will be apparent to those skilled in the art in light of the foregoing teachings and are intended to be included within the scope of the following claims.
Claims (6)
1. A method for improving the water quality of unit washing in electrolytic refining is characterized by comprising the following specific processes:
on-line monitoring the copper sulfate concentration of the washing water in the washing water tank of the cathode copper stripping unit, and when the real-time copper sulfate concentration is monitored to exceed a preset copper sulfate concentration threshold value, sending the washing water in the washing water tank of the cathode copper stripping unit into the washing water tank of the anode scrap washing unit, and adding new water into the washing water tank of the cathode copper stripping unit to supplement the washing water quantity so as to reduce the copper sulfate concentration of the washing water of the cathode copper stripping unit; the washing water tank of the anode scrap washing machine unit eliminates part of anode mud and water settled at the bottom so as to reduce the content of the anode mud in the washing water of the anode scrap washing machine unit, and simultaneously, a space is left for receiving the washing water without the anode mud from the cathode copper stripping machine unit.
2. The method according to claim 1, characterized in that the central control PLC collects the copper sulfate concentration of the washing water in the washing water tank of the cathode copper stripping unit in real time and judges whether the copper sulfate concentration exceeds a preset copper sulfate concentration threshold in real time, if yes, collects a liquid level signal of the washing water tank of the cathode copper stripping unit, if the current liquid level of the washing water tank of the cathode copper stripping unit does not reach the highest liquid level, the central control PLC directly controls the execution of the new water replenishment until the highest liquid level is reached, at the moment, the copper sulfate concentration of the washing water in the washing water tank of the cathode copper stripping unit is collected again, if the preset copper sulfate concentration threshold is not exceeded, the production is continued, if the preset copper sulfate concentration threshold is still exceeded, the central control PLC collects the liquid level of the washing water tank of the anode scrap washing unit, such as the liquid level in the washing water tank of the anode scrap washing unit is lower than a preset low liquid level threshold, the central control PLC directly controls the execution of the new water replenishment of the washing water in the washing water tank of the cathode copper stripping unit to the washing water tank of the anode copper stripping unit is conveyed to the washing water tank of the anode copper stripping unit, and the new water replenishment of the washing water tank of the cathode copper stripping unit is executed; if the liquid level in the washing water tank of the anode scrap washing machine set is higher than a preset high liquid level threshold, the central control PLC controls to open a drain outlet at the bottom of the washing water tank of the anode scrap washing machine set, more water with the bottom of anode mud settled is discharged, when the liquid level of the washing water tank of the anode scrap washing machine set is reduced to a preset half liquid level threshold, the drain outlet is closed, and then control to execute the process of conveying the washing water in the washing water tank of the cathode copper stripping machine set to the washing water tank of the anode scrap washing machine set until the liquid level in the washing water tank of the anode scrap washing machine set reaches the highest liquid level.
3. The method according to claim 2, wherein the washing water tank of the cathode copper stripping unit is communicated with a steam-water mixing heater through a control valve, the steam-water mixing heater is used for heating the fresh water entering the washing water tank of the cathode copper stripping unit to a set temperature, and the control valve is used for controlling the supplementing fresh water quantity; the steam-water mixing heater and the control valve are both in communication connection with the central control PLC, and the central control PLC controls the temperature of the fresh water by controlling the steam quantity and the water quantity entering the steam-water mixing heater.
4. The method according to claim 2, wherein a copper sulfate concentration on-line monitoring instrument and a liquid level meter are arranged on the washing water tank of the cathode copper stripping unit and are respectively used for on-line monitoring the copper sulfate concentration and the liquid level of the washing water in the washing water tank of the cathode copper stripping unit; and the copper sulfate concentration on-line monitoring instrument and the liquid level meter are both in communication connection with the central control PLC.
5. The method according to claim 2, wherein the washing water tank of the cathode copper stripping unit is communicated with the washing water tank of the anode scrap washing unit through a water pump and a corresponding pipeline; the drain outlet at the bottom of the washing water tank of the anode scrap washing machine set is provided with an automatic valve; the water pump and the automatic valve are both in communication connection with a central control PLC, and the central control PLC drives the washing water tank of the cathode copper stripping unit into the washing water tank of the anode scrap washing unit by controlling the water pump to work, and controls the opening and closing of the sewage outlet by controlling the opening and closing of the automatic valve.
6. The method according to claim 2, wherein a liquid level meter is arranged on the washing water tank of the anode scrap washing machine set and is used for monitoring the liquid level of the washing water tank of the anode scrap washing machine set, and the liquid level meter is in communication connection with the central control PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211479752.1A CN116065195A (en) | 2022-11-24 | 2022-11-24 | Method for improving unit washing water quality in electrolytic refining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211479752.1A CN116065195A (en) | 2022-11-24 | 2022-11-24 | Method for improving unit washing water quality in electrolytic refining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116065195A true CN116065195A (en) | 2023-05-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211479752.1A Pending CN116065195A (en) | 2022-11-24 | 2022-11-24 | Method for improving unit washing water quality in electrolytic refining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116065195A (en) |
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2022
- 2022-11-24 CN CN202211479752.1A patent/CN116065195A/en active Pending
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