Method for preparing potassium aurous cyanide through electrolytic method

Abstract

The invention relates to the technical field of production of potassium aurous cyanide, and discloses a method for preparing potassium aurous cyanide by an electrolytic process, which comprises the following steps of: 1, selecting a gold raw material, pressing into a gold sheet, punching, pretreating the punched gold sheet, putting the pretreated gold sheet into an anode tank, and processing pretreatment data to obtain a gold sheet surface state value; if the gold piece surface state value is larger than or equal to the gold piece surface state threshold value, the first step is carried out, and secondary pretreatment is carried out on the gold piece; if the gold piece surface state value is smaller than the gold piece surface state threshold value, entering the step 2; 2, anode liquid is poured into the anode tank, cathode liquid is poured into the cathode tank, and electrolysis is conducted; wherein anodes in the anode tanks are connected with positive charges, and cathodes in the cathode tanks are connected with negative charges; and thirdly, the electrolyte is filtered, the filtered anode electrolyte is heated and concentrated, redundant water is removed, potassium aurous cyanide obtained through primary crystallization is recrystallized, and a product is obtained after washing and drying.

Description

Technical Field

[0001] The invention relates to the technical field of potassium aurous cyanide production, and in particular to a method for preparing potassium aurous cyanide by electrolysis. Background Art

[0002] At present, potassium cyanogen gold is commonly known as gold salt, with the chemical formula KAu(CN)2. Potassium cyanogen gold is a very important chemical reagent in gold plating and alloying processes. It is mainly used for electroplating and chemical gold plating. The coating is fine and bright, with strong corrosion resistance, good conductivity, and easy welding. It is widely used in the electroplating of parts that require long-term stable electrical parameter performance, such as precision instruments, printed circuit boards, integrated circuits, electronic tube shells, and electrical contacts, as well as the electroplating of jewelry, watch parts, artworks, and decorations. Other metal ions such as Ni and Co can also be added to the plating solution to improve the corrosion resistance of the coating or improve other properties. This makes potassium cyanogen gold very much in demand.

[0003] For example, in the preparation process of a method for preparing potassium gold cyanide by electrolysis disclosed in patent application No. 201911177041.7, there is a lack of identification of the cleaning status of the gold sheet after cleaning, and it is impossible to prioritize ensuring that the surface of the gold sheet entering the electrolysis stage meets the requirements, resulting in poor quality of the prepared potassium gold cyanide, which has great limitations. Summary of the invention

[0004] The object of the present invention is to provide a method for preparing potassium gold cyanide by electrolysis, in which the impurity state of the treatment liquid after the gold sheet is cleaned and the impurity state of the gold sheet surface are identified during the pretreatment process of the gold sheet after punching, that is, the cleaning effect of the treatment liquid and the cleaning effect of the gold sheet surface are processed in two directions, with high accuracy.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A method for preparing potassium cyanide of gold by electrolysis comprises the following steps: Step 1: selecting a gold raw material, pressing it into a gold sheet and then punching it, pretreating the punched gold sheet, and placing the pretreated gold sheet into an anode tank;

[0007] Acquire preprocessed data, process the preprocessed data, and obtain the surface state value of the gold sheet;

[0008] If the gold sheet surface state value is greater than or equal to the gold sheet surface state threshold, then go to step 1 to perform secondary preprocessing on the gold sheet;

[0009] If the gold sheet surface state value is less than the gold sheet surface state threshold, proceed to step 2;

[0010] Step 2: Pour anolyte into the anode tank and catholyte into the cathode tank to perform electrolysis;

[0011] Among them, the anode in the anode tank is connected to positive charge, and the cathode in the cathode tank is connected to negative charge;

[0012] Step 3: Filter the electrolyte, heat and concentrate the filtered anode electrolyte to remove excess water, recrystallize the potassium gold cyanide obtained by the initial crystallization, and obtain the product after washing and drying.

[0013] As a further solution of the present invention: the pre-processing data after the gold sheet pre-processing includes the impurity base number on the gold sheet surface and the built-in base number of the cleaning solution.

[0014] As a further solution of the present invention: the impurity base number on the surface of the gold sheet is recorded as Zbs;

[0015] The built-in base of the cleaning solution is recorded as Zys;

[0016] The gold sheet surface state value Zby is calculated by the formula Zby=μ*Zbs+Zys), where μ is the preset proportional coefficient.

[0017] As a further solution of the present invention: the process of obtaining the impurity base number on the surface of the gold sheet is:

[0018] Divide the gold sheet surface into a number of gold sheet surface sub-units, and obtain all impurity outliers in the gold sheet surface sub-units;

[0019] The impurity coverage mean and the impurity unit ratio are obtained by processing all impurity outliers in the surface subunits of the polygold sheet;

[0020] The impurity coverage mean value is multiplied by the impurity unit ratio to obtain the impurity base number on the gold sheet surface.

[0021] As a further solution of the present invention: the process of obtaining the impurity coverage mean is:

[0022] Connect all impurity singular points in clockwise order to obtain the impurity coverage area;

[0023] The area value of the impurity coverage area is calculated by ratio with the area value of the gold sheet surface sub-unit to obtain the impurity coverage ratio of the gold sheet surface sub-unit;

[0024] The impurity coverage ratios of all gold sheet surface subunits are summed and averaged to obtain the impurity coverage mean.

[0025] As a further solution of the present invention: the process of obtaining the multi-hetero unit ratio is:

[0026] If the impurity coverage ratio of the gold sheet surface sub-unit is within the preset range of the impurity coverage ratio of the gold sheet surface sub-unit, the gold sheet surface sub-unit is recorded as a gold sheet surface sub-unit with less impurities;

[0027] If the impurity coverage ratio of the gold sheet surface subunit is outside the preset range of the impurity coverage ratio of the gold sheet surface subunit, the gold sheet surface subunit is recorded as a mixed gold sheet surface subunit.

[0028] The number of the multi-mixed gold sheet surface sub-units is obtained, and the ratio of the number of the multi-mixed gold sheet surface sub-units to the number of the gold sheet surface sub-units is calculated to obtain the multi-mixed unit ratio.

[0029] As a further solution of the present invention: the process of obtaining the built-in base of the cleaning solution is:

[0030] The processing liquid after the gold sheet cleaning is stirred evenly, and the stirred processing liquid is photographed to obtain a suspended image of the processing liquid, and the suspended image of the processing liquid is divided into a plurality of suspended sub-units;

[0031] The impurity base is obtained by processing the impurities in the suspended subunit;

[0032] The impurity bases of all suspended subunits are summed to obtain the built-in base of the cleaning solution.

[0033] As a further solution of the present invention: the process of obtaining the impurity base of the suspended subunit is:

[0034] The ratio of the number of impurities in the suspension unit to the area value of the suspension unit is calculated to obtain the ratio of the number of impurities in the suspension;

[0035] Draw a circumscribed circle with the minimum radius for each impurity in the suspended subunit, so that each independent impurity is completely built into the circumscribed circle, and sum up the areas of all circumscribed circles in the suspended subunit to obtain the impurity region area in the suspended subunit;

[0036] The impurity area ratio of the suspension liquid is obtained by calculating the ratio of the impurity area in the suspension subunit to the area value of the suspension subunit;

[0037] The impurity base of the suspension subunit is calculated by multiplying the suspension impurity quantity ratio and the suspension impurity area ratio.

[0038] Beneficial effects of the present invention: The present invention identifies the impurity state of the treatment liquid after the gold sheet is cleaned and the impurity state of the gold sheet surface during the pretreatment process of the gold sheet after punching, that is, the surface state value of the gold sheet is obtained by processing the cleaning effect of the treatment liquid and the cleaning effect of the gold sheet surface. The pretreatment state of the gold sheet is identified through the surface state value of the gold sheet, thereby effectively ensuring the quality of the gold sheet entering the electrolysis process and improving the preparation quality of potassium gold cyanide. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The present invention will be further described below in conjunction with the accompanying drawings.

[0040] Figure 1 This is a flow chart of a method for preparing potassium gold cyanide by electrolysis according to an embodiment of the present invention;

[0041] Figure 2 This is a flow chart of the identification of subunits on the surface of a gold sheet in a method for preparing potassium gold cyanide by electrolysis according to an embodiment of the present invention;

[0042] Figure 3 It is a schematic diagram of the structure of an electronic device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] Example 1

[0045] See also Figure 1 As shown, the present invention is a method for preparing potassium gold cyanide by electrolysis, comprising the following steps:

[0046] Step 1: Select gold raw materials, press them into gold sheets, and then punch them, pre-treat the punched gold sheets, and put the pre-treated gold sheets into the anode tank;

[0047] Acquire preprocessed data, process the preprocessed data, and obtain the surface state value of the gold sheet;

[0048] If the gold sheet surface state value is greater than or equal to the gold sheet surface state threshold, then go to step 1 to perform secondary preprocessing on the gold sheet;

[0049] If the gold sheet surface state value is less than the gold sheet surface state threshold, proceed to step 2;

[0050] Step 2: Pour anolyte into the anode tank and catholyte into the cathode tank to perform electrolysis;

[0051] Among them, the anode in the anode tank is connected to positive charge, and the cathode in the cathode tank is connected to negative charge;

[0052] Step 3: Filter the electrolyte, heat and concentrate the filtered anode electrolyte to remove excess water, recrystallize the potassium gold cyanide obtained by the initial crystallization, and obtain the product after washing and drying.

[0053] Example 2

[0054] In step 1, the punched gold sheet is soaked in dilute nitric acid to remove impurities and oxides on the surface, and then washed with deionized water to ensure that the surface of the gold sheet is clean and free of dirt;

[0055] Based on this, the pretreatment data after the gold sheet pretreatment includes the impurity base number on the gold sheet surface and the built-in base number of the cleaning solution;

[0056] The process of obtaining the built-in base of the cleaning solution is as follows:

[0057] The processing liquid after the gold sheet cleaning is stirred evenly, and the stirred processing liquid is photographed to obtain a suspended image of the processing liquid, and the suspended image of the processing liquid is divided into a plurality of suspended sub-units;

[0058] Get the number of impurities in each suspended subunit;

[0059] Obtain an area calculation formula to calculate the area of ​​the suspended subunit, and obtain the area value of the suspended subunit;

[0060] The ratio of the number of impurities in the suspension unit to the area value of the suspension unit is calculated to obtain the ratio of the number of impurities in the suspension;

[0061] Draw a circumscribed circle with the minimum radius for each impurity in the suspended subunit, so that each independent impurity is completely built into the circumscribed circle, and sum up the areas of all circumscribed circles in the suspended subunit to obtain the impurity region area in the suspended subunit;

[0062] The impurity area ratio of the suspension liquid is obtained by calculating the ratio of the impurity area in the suspension subunit to the area value of the suspension subunit;

[0063] The impurity base number of the suspension subunit is obtained by multiplying the suspension impurity quantity ratio and the suspension impurity area ratio;

[0064] The impurity bases of all suspended subunits are summed to obtain the built-in base of the cleaning solution.

[0065] The process of obtaining the impurity base number on the gold sheet surface is as follows:

[0066] Divide the gold sheet surface into a number of gold sheet surface sub-units, and obtain all impurity outliers in the gold sheet surface sub-units;

[0067] Among them, impurity anomalies include uncleaned dust, metal particles and oxides on the surface of the gold sheet;

[0068] Connect all impurity singular points in clockwise order to obtain the impurity coverage area;

[0069] Obtaining the area value of the impurity coverage area and the area value of the gold sheet surface sub-unit, calculating the ratio of the area value of the impurity coverage area to the area value of the gold sheet surface sub-unit to obtain the impurity coverage ratio of the gold sheet surface sub-unit;

[0070] See also Figure 2 If the impurity coverage ratio of the gold sheet surface subunit is within the preset range of the impurity coverage ratio of the gold sheet surface subunit, the gold sheet surface subunit is recorded as a gold sheet surface subunit with less impurities;

[0071] If the impurity coverage ratio of the gold sheet surface sub-unit is outside the preset range of the impurity coverage ratio of the gold sheet surface sub-unit, the gold sheet surface sub-unit is recorded as a mixed gold sheet surface sub-unit;

[0072] Obtaining the number of sub-units on the surface of the multi-mixed gold sheet, calculating the ratio of the number of sub-units on the surface of the multi-mixed gold sheet to the number of sub-units on the surface of the gold sheet, and obtaining a multi-mixed unit ratio;

[0073] The impurity coverage ratios of all gold sheet surface sub-units are summed and averaged to obtain the impurity coverage mean;

[0074] The impurity coverage mean value is multiplied by the impurity unit ratio to obtain the impurity base number on the gold sheet surface.

[0075] The impurity base number on the gold sheet surface is recorded as Zbs;

[0076] The built-in base of the cleaning solution is recorded as Zys;

[0077] The gold sheet surface state value Zby is calculated by the formula Zby=μ*(Zbs+Zys), where μ is the preset proportional coefficient;

[0078] The process of obtaining the preset proportional coefficient μ is as follows:

[0079] There are m groups of historical data, each group of historical data includes the impurity base Zbs on the gold sheet surface, the built-in base Zys of the cleaning solution, and the gold sheet surface state value Zby;

[0080] A linear model is used to fit m groups of historical data, and the prepared historical data is brought into the selected fitting model for fitting, and the mean of the fitting coefficients is obtained as the preset proportional coefficient.

[0081] Example 3

[0082] Reference Figure 3 The embodiment of the present invention further provides a computer device 3, comprising: a memory 302 and a processor 301 and a computer program 303 stored in the memory 302. When the computer program 303 is executed on the processor 301, the method for preparing potassium gold cyanide by electrolysis as described in any one of the above methods is implemented.

[0083] The computer device 3 may be a computing device such as a desktop computer, a notebook, a PDA, or a cloud server. The computer device 3 may include, but is not limited to, a processor 301 and a memory 302. Those skilled in the art will appreciate that

[0084] Figure 3 It is only an example of computer device 3 and does not constitute a limitation on computer device 3. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components, for example, it may also include input and output devices, network access devices, etc.

[0085] The processor 301 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0086] In some embodiments, the memory 302 may be an internal storage unit of the computer device 3, such as a hard disk or memory of the computer device 3. In other embodiments, the memory 302 may also be an external storage device of the computer device 3, such as a plug-in hard disk, a smart memory card (SmartMediaCard, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), etc. equipped on the computer device 3. Further, the memory 302 may also include both an internal storage unit of the computer device 3 and an external storage device. The memory 302 is used to store an operating system, an application program, a boot loader (BootLoader), data, and other programs, such as the program code of the computer program. The memory 302 may also be used to temporarily store data that has been output or is to be output.

[0087] Example 4

[0088] An embodiment of the present invention further provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the method for preparing potassium gold cyanide by electrolysis as described in any one of the above methods is implemented.

[0089] In this embodiment, if the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, which can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a computer-readable storage medium. When the computer program is executed by the processor, the steps of the above-mentioned various method embodiments can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium can at least include: any entity or device that can carry the computer program code to the camera / terminal device, recording medium, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium. For example, a USB flash drive, a mobile hard disk, a disk or an optical disk. In some jurisdictions, according to legislation and patent practice, computer-readable media cannot be electric carrier signals and telecommunication signals.

[0090] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0091] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0092] In the embodiments disclosed in the present application, it should be understood that the disclosed devices / terminal equipment and methods can be implemented in other ways. For example, the device / terminal equipment embodiments described above are only schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0093] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0094] The above formulas are all dimensionless and numerical calculations. The formula is a formula for the most recent real situation obtained by collecting a large amount of data and performing software simulation. The preset parameters in the formula are set by technicians in this field according to actual conditions.

[0095] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A method for preparing potassium gold cyanide by electrolysis, characterized in that: The following steps are involved: Step 1: Select gold raw materials, press them into gold sheets, and then punch them, pre-treat the punched gold sheets, and put the pre-treated gold sheets into the anode tank; Acquire preprocessed data, process the preprocessed data, and obtain the surface state value of the gold sheet; If the gold sheet surface state value is greater than or equal to the gold sheet surface state threshold, then go to step 1 to perform secondary preprocessing on the gold sheet; If the gold sheet surface state value is less than the gold sheet surface state threshold, proceed to step 2; Step 2: Pour anolyte into the anode tank and catholyte into the cathode tank to perform electrolysis; Among them, the anode in the anode tank is connected to positive charge, and the cathode in the cathode tank is connected to negative charge; Step 3: Filter the electrolyte, heat and concentrate the filtered anode electrolyte to remove excess water, recrystallize the potassium gold cyanide obtained by the initial crystallization, and obtain the product after washing and drying.

2. The method for preparing potassium gold cyanide by electrolysis according to claim 1, characterized in that: The pretreatment data after the gold sheet pretreatment includes the base number of impurities on the gold sheet surface and the base number of the built-in cleaning solution.

3. The method for preparing potassium cyanide by electrolysis according to claim 2, characterized in that: The impurity base number on the gold sheet surface is recorded as Zbs; The built-in base of the cleaning solution is recorded as Zys; The gold sheet surface state value Zby is calculated by the formula Zby=μ*(Zbs+Zys), where μ is a preset proportional coefficient.

4. The method for preparing potassium gold cyanide by electrolysis according to claim 1, characterized in that: The process of obtaining the impurity base number on the gold sheet surface is as follows: Divide the gold sheet surface into a number of gold sheet surface sub-units, and obtain all impurity outliers in the gold sheet surface sub-units; The impurity coverage mean and the impurity unit ratio are obtained by processing all impurity outliers in the surface subunits of the polygold sheet; The impurity coverage mean value is multiplied by the impurity unit ratio to obtain the impurity base number on the gold sheet surface.

5. The method for preparing potassium gold cyanide by electrolysis according to claim 4, characterized in that: The process of obtaining the impurity coverage mean is: Connect all impurity singular points in clockwise order to obtain the impurity coverage area; The area value of the impurity coverage area is calculated by ratio with the area value of the gold sheet surface sub-unit to obtain the impurity coverage ratio of the gold sheet surface sub-unit; The impurity coverage ratios of all gold sheet surface subunits are summed and averaged to obtain the impurity coverage mean.

6. The method for preparing potassium gold cyanide by electrolysis according to claim 5, characterized in that: The process of obtaining the multi-heterogeneous unit ratio is: If the impurity coverage ratio of the gold sheet surface sub-unit is within the preset range of the impurity coverage ratio of the gold sheet surface sub-unit, the gold sheet surface sub-unit is recorded as a gold sheet surface sub-unit with less impurities; If the impurity coverage ratio of the gold sheet surface sub-unit is outside the preset range of the impurity coverage ratio of the gold sheet surface sub-unit, the gold sheet surface sub-unit is recorded as a mixed gold sheet surface sub-unit; The number of the multi-mixed gold sheet surface sub-units is obtained, and the ratio of the number of the multi-mixed gold sheet surface sub-units to the number of the gold sheet surface sub-units is calculated to obtain the multi-mixed unit ratio.

7. The method for preparing potassium gold cyanide by electrolysis according to claim 1, characterized in that: The process of obtaining the built-in base of the cleaning solution is: The processing liquid after the gold sheet cleaning is stirred evenly, and the stirred processing liquid is photographed to obtain a suspended image of the processing liquid, and the suspended image of the processing liquid is divided into a plurality of suspended sub-units; The impurity base is obtained by processing the impurities in the suspended subunit; The impurity bases of all suspended subunits are summed to obtain the built-in base of the cleaning solution.

8. The method for preparing potassium gold cyanide by electrolysis according to claim 1, characterized in that: The process of obtaining the impurity base of the suspended subunit is: The ratio of the number of impurities in the suspension unit to the area value of the suspension unit is calculated to obtain the ratio of the number of impurities in the suspension; Draw a circumscribed circle with the minimum radius for each impurity in the suspended subunit, so that each independent impurity is completely built into the circumscribed circle, and sum up the areas of all circumscribed circles in the suspended subunit to obtain the impurity region area in the suspended subunit; The impurity area ratio of the suspension liquid is obtained by calculating the ratio of the impurity area in the suspension subunit to the area value of the suspension subunit; The impurity base of the suspension subunit is calculated by multiplying the suspension impurity quantity ratio and the suspension impurity area ratio.

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