Nickel carbonate extraction method and system in nickel fluoride production process, storage medium and intelligent terminal

Abstract

The invention relates to a nickel fluoride production technology nickel carbonate extraction method and system, a storage medium and an intelligent terminal, and relates to the field of nickel fluoride production technologies, and the nickel fluoride production technology comprises the steps that after nickel carbonate precipitates are generated and filtered, a preset calcium carbonate flotation preorder step is executed; a first side image is obtained after the calcium carbonate flotation preorder step is executed; analyzing the first side image to obtain a first boundary height; based on the first boundary height and a preset basic flotation subsequent step, a first actual flotation subsequent step is determined and executed, wherein the basic flotation subsequent step comprises the steps that foam is collected; filtering and washing the collected foam; the nickel carbonate extraction method has the advantages that the calcium carbonate is floated on the surface through the calcium carbonate flotation method, so that the calcium carbonate is separated from the nickel carbonate, and the nickel carbonate extraction purity is improved.

Description

Technical Field

[0001] The present application relates to the field of nickel fluoride production technology, and in particular to a method, system, storage medium and intelligent terminal for extracting nickel carbonate in the nickel fluoride production technology. Background Art

[0002] Nickel fluoride is an important inorganic compound, commonly used in electroplating, battery manufacturing and other fields. Its chemical formula is generally NiF2 (nickel difluoride).

[0003] In the related art, the production process of nickel fluoride is as follows: 1. The nickel sulfate and calcium carbonate in the raw materials are mixed to form a nickel carbonate precipitate, and the precipitated nickel carbonate is filtered and washed, and then mixed with the hydrofluoric acid in the raw materials to precipitate to obtain nickel fluoride.

[0004] The prior art has the following problems: in the production process, all the proportions are directly injected manually, which easily leads to inaccurate proportions. Once the proportions are inaccurate, calcium carbonate is easily precipitated and mixed with nickel carbonate, resulting in nickel carbonate containing calcium carbonate impurities and low purity. There is still room for improvement. Summary of the invention

[0005] In order to improve the problem that once the ratio is inaccurate, calcium carbonate will easily precipitate and mix with nickel carbonate, resulting in the nickel carbonate containing calcium carbonate impurities, the present application provides a method, system, storage medium and intelligent terminal for extracting nickel carbonate in a nickel fluoride production process.

[0006] In the first aspect, the present application provides a method for extracting nickel carbonate in a nickel fluoride production process, using the following technical solution: A method for extracting nickel carbonate in a nickel fluoride production process comprises: After the nickel carbonate precipitate is generated and filtered, the preset calcium carbonate flotation pre-process step is performed, and the calcium carbonate flotation pre-process step includes: mixing a mixture of calcium carbonate and nickel carbonate with water to prepare a slurry of a certain concentration; adjusting the pH value to a preset calcium carbonate flotation alkalinity value; adding a first collector and a frother; and introducing air until calcium carbonate foam is generated; Acquiring a first side image after performing a pre-sequence step of calcium carbonate flotation; analyzing the first side image to obtain a first dividing line height; Based on the first dividing line height and the preset basic flotation subsequent step, the first actual flotation subsequent step is determined and executed, and the basic flotation subsequent step includes: collecting foam; filtering and washing the collected foam; After carrying out the first actual flotation subsequent step, nickel carbonate is obtained.

[0007] By adopting the above technical solution and executing the calcium carbonate flotation method, the calcium carbonate is floated on the surface, thereby separating the calcium carbonate and nickel carbonate, thereby improving the purity of the extracted nickel carbonate.

[0008] Optionally, the method for obtaining nickel carbonate after performing the first actual flotation subsequent step comprises: The remaining slurry is subjected to a preset dehydration treatment step to obtain nickel carbonate, wherein the dehydration treatment step comprises: filtering the slurry; and heating and drying.

[0009] By adopting the above technical solution, since the nickel carbonate separated from calcium carbonate still exists in the form of slurry, the nickel carbonate can be reduced to a solid state through dehydration treatment, which facilitates subsequent treatment of the nickel carbonate.

[0010] Optionally, the dehydration step further comprises: Get the current sediment weight; A washing step is performed before the step of filtering the slurry, the washing step comprising: washing with a dilute hydrochloric acid solution and filtering; Obtaining the weight of the cleaned precipitate after performing the cleaning step; The dehydration step is completed when the weight of the washed sediment remains unchanged; When the weight of the washed precipitate becomes smaller, the washing step is continued.

[0011] By adopting the above technical scheme, although calcium carbonate is separated, in order to prevent calcium carbonate from remaining in the precipitate, the characteristics of ammonium oxalate solution are used to clean nickel carbonate, so that calcium carbonate is dissolved in the ammonium oxalate solution and removed, thereby improving the purity of nickel carbonate.

[0012] Optionally, another method for obtaining nickel carbonate after performing the subsequent step of actual flotation is also included, the method comprising: After executing the first actual flotation subsequent step, a preset nickel carbonate flotation pre-order step is executed, wherein the nickel carbonate flotation pre-order step includes: adjusting the pH value to a preset nickel carbonate flotation neutral value; adding a second collector and a frother; and introducing air until nickel carbonate foam is generated; Acquiring a second side image after performing a pre-sequence step of nickel carbonate flotation; analyzing the second side image to obtain a second dividing line height; A second actual flotation subsequent step is determined and executed based on the second dividing line height and the basic flotation subsequent step.

[0013] By adopting the above technical solution, nickel carbonate is extracted by flotation of nickel carbonate. On the one hand, if other impurities exist in the nickel carbonate precipitate itself, the other impurities will not adhere to the nickel carbonate and be taken away, thereby improving the purity of the nickel carbonate; on the other hand, the amount of nickel carbonate solution is reduced, and dehydration can be completed faster during dehydration, thereby improving the purification efficiency of nickel carbonate.

[0014] Optionally, the method of performing the nickel carbonate flotation pre-step after performing the first actual flotation post-step comprises: After performing the first actual flotation subsequent step, repeatedly performing the calcium carbonate flotation preceding step and acquiring the first side image; When the first side image does not have the first dividing line height, performing the nickel carbonate flotation pre-sequence step; When the first dividing line height exists in the first side image, the first actual flotation subsequent step continues to be determined and executed until the first dividing line height does not exist in the first side image.

[0015] By adopting the above technical solution, the calcium carbonate is continuously floated, thereby ensuring that all the calcium carbonate is floated out without any residue, thereby improving the stability of the flotation of calcium carbonate.

[0016] Optionally, before performing the pre-step of calcium carbonate flotation, the following steps are also included: Obtain the weight of nickel carbonate precipitate and the weight of calcium carbonate introduced; The product calcium-nickel ratio is calculated based on the weight of nickel carbonate precipitation, the weight of calcium carbonate introduced and a preset conversion equation; Based on the product calcium-nickel ratio and the preset basic calcium-nickel flotation pre-step, the actual calcium-nickel flotation pre-step is determined and executed, and the basic calcium-nickel flotation pre-step includes: mixing a mixture of calcium carbonate and nickel carbonate with water to prepare a slurry of a certain concentration; adjusting the pH value to a preset calcium-nickel flotation weak alkaline value; adding a first collector, a second collector and a frother; and introducing air until calcium-nickel mixed foam is generated; A third side image is obtained after performing the actual calcium-nickel flotation pre-sequence step; analyzing the third lateral image to obtain a third dividing line height; The third actual flotation subsequent step is determined based on the third dividing line height and the basic flotation subsequent step and is performed to obtain nickel carbonate precipitation.

[0017] By adopting the above technical solution, since other impurities may exist in the nickel carbonate precipitate, the two can be floated simultaneously before separating them to remove the additional impurities in advance, thereby improving the efficiency of nickel carbonate precipitation extraction.

[0018] Optionally, the method of analyzing the third side image to obtain the height of the third dividing line includes: The third side image obtained after performing the actual calcium-nickel flotation pre-sequence step is defined as the current third side image, and the corresponding third dividing line height is defined as the current third dividing line height; After performing the actual calcium-nickel flotation pre-process step, continue to perform the calcium carbonate flotation pre-process step and obtain analysis to obtain the fourth dividing line height; When the fourth dividing line height is lower than the current third dividing line height, the fourth dividing line height is updated to the current third dividing line height, and the calcium carbonate flotation pre-sequence step is continued to be executed and the fourth dividing line height is obtained and analyzed until the fourth dividing line height is equal to the current third dividing line height; When the fourth dividing line height is equal to the current third dividing line height, the nickel carbonate flotation pre-sequence step is performed and the fifth dividing line height is obtained and analyzed, and the fourth dividing line height is updated to the current third dividing line height; When the fifth dividing line height is lower than the current third dividing line height, the fifth dividing line height is updated to the current third dividing line height, and the nickel carbonate flotation pre-sequence step is continued to be performed and the fifth dividing line height is obtained and analyzed until the fifth dividing line height is equal to the current third dividing line height; When the fifth dividing line height is equal to the current third dividing line height, the corresponding current third dividing line height is output.

[0019] Although nickel carbonate and calcium carbonate are extracted by adopting the above technical solution, the complete extraction cannot be guaranteed. Therefore, the corresponding collector is further added on the original basis to improve the completeness of the extracted nickel carbonate and calcium carbonate.

[0020] In a second aspect, the present application provides a nickel carbonate extraction system in a nickel fluoride production process, which adopts the following technical solution: A nickel carbonate extraction system in a nickel fluoride production process, comprising: An acquisition module, used to acquire a first side image, a current precipitate weight, a cleaned precipitate weight, a second side image, a nickel carbonate precipitate weight, an introduced calcium carbonate weight, and a third side image; A memory for storing a program for controlling a method for extracting nickel carbonate in any of the above nickel fluoride production processes; The program in the processor and the memory can be loaded and executed by the processor to realize the control method of the nickel carbonate extraction method in any of the above-mentioned nickel fluoride production processes.

[0021] By adopting the above technical solution and executing the calcium carbonate flotation method, the calcium carbonate is floated on the surface, thereby separating the calcium carbonate and nickel carbonate, thereby improving the purity of the extracted nickel carbonate.

[0022] In the third aspect, the present application provides a smart terminal, which adopts the following technical solution: The intelligent terminal comprises a memory and a processor, wherein the memory stores a computer program which can be loaded by the processor and executes any of the above-mentioned methods for extracting nickel carbonate in the nickel fluoride production process.

[0023] By adopting the above technical solution and executing the calcium carbonate flotation method, the calcium carbonate is floated on the surface, thereby separating the calcium carbonate and nickel carbonate, thereby improving the purity of the extracted nickel carbonate.

[0024] Fourthly, the present application provides a computer storage medium that can store corresponding programs and has the characteristics of fast interaction with memory big data.

[0025] Computer readable storage medium, using the following technical solution: A computer-readable storage medium stores a computer program that can be loaded by a processor and executes any of the above-mentioned methods for extracting nickel carbonate in the nickel fluoride production process.

[0026] By adopting the above technical solution and executing the calcium carbonate flotation method, the calcium carbonate is floated on the surface, thereby separating the calcium carbonate and nickel carbonate, thereby improving the purity of the extracted nickel carbonate.

[0027] In summary, the present application includes at least the following beneficial technical effects: 1. By performing the calcium carbonate flotation method, calcium carbonate is floated on the surface, thereby separating calcium carbonate and nickel carbonate, thereby improving the purity of nickel carbonate extraction; 2. Before separating the two, they can be floated at the same time to remove additional impurities in advance, thereby improving the efficiency of nickel carbonate precipitation extraction. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a flow chart of a method for extracting nickel carbonate in a nickel fluoride production process in an embodiment of the present application.

[0029] Figure 2 It is a flow chart of the pre-sequence steps of calcium carbonate flotation in the embodiment of the present application.

[0030] Figure 3 It is a flow chart of the subsequent steps of basic flotation in the embodiment of the present application.

[0031] Figure 4 It is a flow chart of a method for obtaining nickel carbonate after performing the first actual flotation subsequent step in an embodiment of the present application.

[0032] Figure 5 It is a flow chart of the dehydration treatment steps in the embodiment of the present application.

[0033] Figure 6It is a flow chart of another method for obtaining nickel carbonate after performing the subsequent steps of actual flotation in an embodiment of the present application.

[0034] Figure 7 It is a flow chart of the pre-sequence steps of nickel carbonate flotation in the embodiment of the present application.

[0035] Figure 8 It is a flow chart of a method for executing a preceding step of nickel carbonate flotation after executing a subsequent step of a first actual flotation in an embodiment of the present application.

[0036] Fig. 9 It is a flow chart of the basic calcium-nickel flotation pre-sequence steps in the embodiments of the present application.

[0037] Fig.10 It is a flow chart of a method for analyzing a third side image to obtain a third dividing line height in an embodiment of the present application.

[0038] Fig.11 It is a system module diagram of a method for extracting nickel carbonate in a nickel fluoride production process in an embodiment of the present application. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of this application more clear, the following Figure 1-Figure 11 It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0040] The present application example discloses a method for extracting nickel carbonate in a nickel fluoride production process. Figure 1 A method for extracting nickel carbonate in a nickel fluoride production process comprises: Step 100: After nickel carbonate precipitation is generated and filtered, a pre-set calcium carbonate flotation pre-step is performed.

[0041] The step of generating and filtering nickel carbonate precipitate is the first step in the production process of nickel fluoride, that is, the nickel sulfate and calcium carbonate in the raw materials are mixed to form nickel carbonate precipitate.

[0042] Reference Figure 2 , the pre-sequence steps of calcium carbonate flotation include: Step 1001: Mix a mixture of calcium carbonate and nickel carbonate with water to prepare a slurry of a certain concentration.

[0043] The mixture in the mixed slurry here does not dissolve in water.

[0044] Step 1002: Adjust the pH value to a preset calcium carbonate flotation alkalinity value.

[0045] The alkalinity value of calcium carbonate flotation is the pH value required for flotation of calcium carbonate, and the pH value is alkaline. The data here are obtained by the staff in this field based on actual experiments.

[0046] Step 1003: Add the first collector and the frother.

[0047] The collector is a surfactant that can adsorb on the surface of mineral particles and change their hydrophobicity. The first collector is a collector that changes the hydrophobicity of calcium carbonate. Common collectors include fatty acid collectors (such as oleic acid). The foaming agent is an object used to generate stable bubbles to help hydrophobic mineral particles attach to the bubbles and float to the liquid surface. Common foaming agents include pine alcohol oil (MIBC) and the like. There is a sequence here, first add the first collector, then add the foaming agent.

[0048] Step 1004: introducing air until calcium carbonate foam is generated.

[0049] Air is introduced into the slurry to form a large number of tiny bubbles. The calcium carbonate becomes hydrophobic due to the action of the first collector, and thus adheres to the bubbles and rises to the liquid surface with the bubbles to form a foam layer, while the nickel carbonate remains in the slurry and is not easy to float up.

[0050] Step 101: Acquire a first side image after performing a pre-sequence step of calcium carbonate flotation.

[0051] The first side image is an image of the pulp observed from the side after the pre-sequence step of calcium carbonate flotation is performed, and is obtained by photographing with a camera.

[0052] Step 102: Analyze the first side image to obtain a first dividing line height.

[0053] The first boundary height is the boundary between the foam layer and the slurry in the first side image. The analysis method is to identify two obvious boundary lines and obtain the line segment formed by the intersection of the two.

[0054] Step 103: determining and executing a first actual flotation subsequent step based on the first dividing line height and a preset basic flotation subsequent step.

[0055] The first actual flotation subsequent step is a flotation subsequent step modified according to the first dividing line height.

[0056] Reference Figure 3 , the subsequent steps of basic flotation include: Step 1031: Collect the foam.

[0057] The collection method can be to use a scraper or other mechanical means to collect. The difference between the first actual flotation subsequent step and the basic flotation subsequent step is the difference in the position of the scraped boundary layer, that is, the first actual flotation subsequent step is to scrape at the height of the first boundary line.

[0058] Step 1032: The collected foam is filtered and washed.

[0059] Here, the moisture in the corresponding foam will also be removed by filtering, and the purpose of washing is to remove the first collector and foaming agent adsorbed on the surface.

[0060] Step 104: Obtain nickel carbonate after performing the first actual flotation subsequent step.

[0061] There are many steps to obtain nickel carbonate here, which will be introduced in the subsequent process and will not be repeated here.

[0062] Reference Figure 4 , the method for obtaining nickel carbonate after performing the first actual flotation subsequent step comprises: Step 200: The remaining slurry is subjected to a preset dehydration treatment step to obtain nickel carbonate.

[0063] The dehydration step is a dehydration treatment method. Since calcium carbonate is removed in the previous step, the remaining slurry generally contains only nickel carbonate.

[0064] Reference Figure 5 , the dehydration treatment steps include: Step 2001: Filter the slurry.

[0065] The purpose of filtering the slurry is to remove water to obtain solid matter.

[0066] Step 2002: heating and drying.

[0067] The purpose of heat drying is to further remove moisture.

[0068] Step 2003: Obtain the current sediment weight.

[0069] The current sediment weight is the weight of the solid sediment after step 2001 and step 2002. The method of obtaining the weight may be a weighing method.

[0070] Step 2004: Perform a washing step before filtering the slurry.

[0071] The cleaning step includes: cleaning with a dilute hydrochloric acid solution and filtering.

[0072] Dilute hydrochloric acid solution can react with calcium carbonate to form calcium chloride dissolved in dilute hydrochloric acid, while nickel carbonate has a higher solubility and will remain in the solution or exist in the form of smaller particles. Therefore, nickel carbonate precipitation can be obtained by filtering. At the end, it will also be washed with distilled water to remove residual acid.

[0073] In the embodiment of the present application, if the remaining impurities are few or non-existent, the nickel carbonate and calcium carbonate can be directly separated by dilute hydrochloric acid to achieve the purpose of purification.

[0074] Step 2005: Obtain the weight of the cleaned sediment after performing the cleaning step.

[0075] The weight of the washed precipitate is the weight of the precipitate after the washing step. The method of obtaining the weight may be a weighing method. The purpose of obtaining the weight here is to determine whether the weight has changed and whether the calcium carbonate impurity has been removed.

[0076] Step 2006: When the weight of the washed sediment remains unchanged, the dehydration step is completed.

[0077] When the weight of the washed sediment remains unchanged, it means that it has been cleaned and other impurities cannot be removed through the washing step, so it can be ended directly.

[0078] Step 2007: When the weight of the cleaned sediment becomes smaller, continue to perform the cleaning step.

[0079] When the weight of the cleaned sediment becomes smaller, it means that it has not been cleaned thoroughly or it is impossible to judge whether it has been cleaned thoroughly, so the cleaning step is performed again to determine whether the cleaning is completed.

[0080] Reference Figure 6 , and also includes another method for obtaining nickel carbonate after performing the subsequent step of actual flotation, the method comprising: Step 300: After performing the first actual flotation subsequent step, repeatedly perform the calcium carbonate flotation preceding step and obtain a first side image.

[0081] The purpose of repeated execution is to determine whether the calcium carbonate is completely removed by floatation.

[0082] Step 301: Execute the nickel carbonate flotation pre-sequence step when the first side image does not have the first dividing line height.

[0083] When it does not exist, the pre-flotation step of nickel carbonate can be performed, which is explained in the subsequent process and will not be repeated here.

[0084] Step 302: When the first side image has the first dividing line height, continue to determine the first actual flotation subsequent step and execute until the first side image does not have the first dividing line height.

[0085] When the first side image has the height of the first dividing line, it means that the flotation removal has not been completed, and the flotation removal should continue.

[0086] Step 303: Execute a preset nickel carbonate flotation pre-step after executing the first actual flotation post-step.

[0087] The pre-flotation step of nickel carbonate is a pre-flotation step of flotating nickel carbonate from the ore pulp. In the embodiment of the present application, it is required that the first side image no longer has the first dividing line height.

[0088] Reference Figure 7 , the nickel carbonate flotation pre-sequence step comprises: Step 3031: Adjust the pH value to a preset nickel carbonate flotation neutral value.

[0089] The neutral value for nickel carbonate flotation is the pH value required for nickel carbonate flotation, which is neutral. The data here are obtained by the staff in this field based on actual experiments.

[0090] Step 3032: Add a second collector and a frother.

[0091] The second collector is a surfactant that can be adsorbed on the surface of mineral particles to change their hydrophobicity. The second collector is a collector that changes the hydrophobicity of nickel carbonate. Common collectors include amine collectors. Examples of amine collectors include dodecylamine, hexadecylamine, etc. There is a sequence here. The second collector is added first, and then the foaming agent is added.

[0092] Step 3033: Air is introduced until nickel carbonate foam is generated.

[0093] Air is introduced to form bubbles, causing the nickel carbonate particles to adhere to the bubbles and rise to the liquid surface along with the bubbles to form a foam layer.

[0094] Step 304: Acquire a second side image after performing the pre-sequence step of nickel carbonate flotation.

[0095] The second side image is an image of the pulp observed from the side after the pre-sequence step of nickel carbonate flotation is performed. The acquisition method here is obtained by shooting with a camera.

[0096] Step 305: Analyze the second side image to obtain a second dividing line height.

[0097] The second boundary height is the boundary between the foam layer and the slurry in the second side image. The analysis method is to identify two obvious boundary lines and obtain the line segment formed by the intersection of the two.

[0098] Step 306: Determine and execute a second actual flotation subsequent step based on the second dividing line height and the basic flotation subsequent step.

[0099] The second actual flotation subsequent step is a flotation subsequent step modified according to the second boundary height.

[0100] Reference Figure 8 , the method of performing the first actual flotation subsequent step and the nickel carbonate flotation preceding step comprises: Step 400: Obtain the weight of nickel carbonate precipitate and the weight of calcium carbonate introduced.

[0101] The weight of nickel carbonate precipitation is the weight of the final precipitate, which necessarily includes the weight of nickel carbonate but not necessarily the weight of calcium carbonate. The weight of calcium carbonate input is the weight of calcium carbonate added, which is the artificially controlled amount of calcium carbonate input.

[0102] Step 401: Calculate the product calcium-nickel ratio based on the weight of nickel carbonate precipitate, the weight of calcium carbonate introduced and a preset conversion equation.

[0103] The conversion equation is: CaCO3+H2SO4→CaSO4+CO2↑+H2OCaCO3+H2SO4→CaSO4+CO2↑+H2O NiSO4+Na2CO3→NiCO3↓+Na2SO4 Therefore, the product calcium-nickel ratio is the ratio of the calcium component to the nickel component in the precipitate. The calculation method here is that the weight of the nickel carbonate precipitate includes the total weight of the nickel carbonate generated by the reaction and the remaining calcium carbonate. The weight of the calcium carbonate introduced includes the total weight of the calcium carbonate before the reaction to generate nickel carbonate and the remaining calcium carbonate. The weight of the nickel carbonate generated by the reaction and the calcium carbonate before the reaction to generate nickel carbonate can be calculated by the conversion equation, so this is a set of two-variable linear equations.

[0104] Step 402: Determine and execute the actual calcium-nickel flotation precursor step based on the product calcium-nickel ratio and the preset basic calcium-nickel flotation precursor step.

[0105] The actual calcium-nickel flotation pre-process is a calcium-nickel flotation pre-process adjusted according to the product calcium-nickel ratio. Here, the ratio of the first collector to the second collector is related to the product calcium-nickel ratio.

[0106] Reference Fig. 9 , the basic calcium nickel flotation pre-sequence steps include: Step 4021: Mix the mixture of calcium carbonate and nickel carbonate with water to prepare a slurry of a certain concentration.

[0107] Step 4022: Adjust the pH value to a preset weak alkaline value for both calcium and nickel flotation.

[0108] The weak alkalinity value for both calcium and nickel flotation is the pH value required for both nickel carbonate and calcium carbonate flotation, and the pH value is alkaline. The data here are obtained by the staff in this field based on actual experiments.

[0109] Step 4023: Add the first collector, the second collector and the frother.

[0110] Step 4024: Air is introduced until calcium-nickel mixed foam is produced.

[0111] Air is introduced to form bubbles, so that nickel carbonate and calcium carbonate particles are attached to the bubbles and rise to the liquid surface with the bubbles to form a foam layer.

[0112] Step 403: Acquire a third side image after performing the actual calcium-nickel flotation pre-step.

[0113] The third side image is an image of the pulp observed from the side after the pre-calcium-nickel flotation step is performed. The acquisition method here is obtained by shooting with a camera.

[0114] Step 404: Analyze the third side image to obtain a third dividing line height.

[0115] The third boundary height is the boundary between the foam layer and the slurry in the third side image. The analysis method is to identify two obvious boundary lines and obtain the line segment formed by the intersection of the two.

[0116] Step 405: Determine and execute a third actual flotation subsequent step based on the third dividing line height and the basic flotation subsequent step to obtain nickel carbonate precipitation.

[0117] The third actual flotation subsequent step is a flotation subsequent step modified according to the third boundary height.

[0118] Reference Fig.10 , the method of analyzing the third side image to obtain the height of the third dividing line includes: Step 500: define the third side image obtained after performing the actual calcium-nickel flotation preceding step as the current third side image, and define the corresponding third dividing line height as the current third dividing line height.

[0119] Step 501: After performing the actual calcium-nickel flotation pre-step, continue to perform the calcium carbonate flotation pre-step and obtain analysis to obtain the fourth dividing line height.

[0120] The fourth dividing line height is the height of the dividing line after the actual calcium-nickel flotation pre-step is performed and the calcium carbonate flotation pre-step is continued. The purpose of performing the calcium carbonate flotation pre-step here is to see whether calcium carbonate still exists.

[0121] Step 502: When the fourth dividing line height is lower than the current third dividing line height, the fourth dividing line height is updated to the current third dividing line height, and the calcium carbonate flotation pre-sequence step is continued to be executed and the fourth dividing line height is obtained and analyzed until the fourth dividing line height is equal to the current third dividing line height.

[0122] When the fourth dividing line height is lower than the current third dividing line height, it means that calcium carbonate still exists in the slurry before executing the preceding step of calcium carbonate flotation. Therefore, in order to determine whether it has been completely removed, the fourth dividing line height is updated to the current third dividing line height, and the preceding step of calcium carbonate flotation is continued to be executed and the fourth dividing line height is obtained and analyzed until the fourth dividing line height is equal to the current third dividing line height.

[0123] Step 503: When the fourth dividing line height is equal to the current third dividing line height, the preceding steps of nickel carbonate flotation are executed and the fifth dividing line height is obtained and analyzed, and the fourth dividing line height is updated to the current third dividing line height.

[0124] The fifth dividing line height is the height of the dividing line after the actual calcium nickel flotation pre-step and the calcium carbonate flotation pre-step are performed and the nickel carbonate flotation pre-step is continued. Here, this step can also be performed before the calcium carbonate flotation pre-step. When the fourth dividing line height is equal to the current third dividing line height, it means that the calcium carbonate in the pulp has been completely separated at this time, so nickel carbonate needs to be floated at this time, and the nickel carbonate flotation pre-step is performed.

[0125] Here, the actual calcium-nickel flotation pre-processing step can also be continued according to the pre-processing step to detect whether there is any unfloated calcium carbonate or nickel carbonate.

[0126] Step 504: When the fifth dividing line height is lower than the current third dividing line height, the fifth dividing line height is updated to the current third dividing line height, and the preceding steps of nickel carbonate flotation are continued to be executed and the fifth dividing line height is obtained and analyzed until the fifth dividing line height is equal to the current third dividing line height.

[0127] When the fifth dividing line height is lower than the current third dividing line height, it means that nickel carbonate still exists in the slurry before executing the nickel carbonate flotation pre-step. Therefore, in order to determine whether it has been completely removed, the fifth dividing line height is updated to the current third dividing line height, and the nickel carbonate flotation pre-step is continued to be executed and the fifth dividing line height is obtained and analyzed until the fifth dividing line height is equal to the current third dividing line height.

[0128] Step 505: When the fifth dividing line height is equal to the current third dividing line height, the corresponding current third dividing line height is output.

[0129] When the fifth dividing line height is equal to the current third dividing line height, it means that the nickel carbonate in the slurry has been completely separated, so the third dividing line height can be directly output.

[0130] It should be noted here that if the fourth dividing line height is equal to the current third dividing line height for multiple times, and the fifth dividing line height is equal to the current third dividing line height, it means that the ratio can be completely cleared according to the previous order and steps 500-505 can be omitted when the method of the embodiment of the present application is executed again.

[0131] Based on the same inventive concept, an embodiment of the present invention provides a nickel carbonate extraction system in a nickel fluoride production process.

[0132] Reference Fig.11 , a nickel carbonate extraction system in a nickel fluoride production process, comprising: An acquisition module, used to acquire a first side image, a current precipitate weight, a cleaned precipitate weight, a second side image, a nickel carbonate precipitate weight, an introduced calcium carbonate weight, and a third side image; A memory for storing a program for a control method of a nickel carbonate extraction method in a nickel fluoride production process; The program in the processor memory can be loaded and executed by the processor to realize a control method for extracting nickel carbonate in a nickel fluoride production process.

[0133] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. The specific working process of the system, device and unit described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0134] An embodiment of the present invention provides a computer-readable storage medium storing a computer program that can be loaded by a processor and executed for a method for extracting nickel carbonate in a nickel fluoride production process.

[0135] Computer storage media include, for example, various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories (ROM), random access memories (RAM), magnetic disks or optical disks.

[0136] Based on the same inventive concept, an embodiment of the present invention provides an intelligent terminal, including a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and execute a method for extracting nickel carbonate in a nickel fluoride production process.

[0137] The above are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Any feature disclosed in this specification (including the abstract and drawings), unless otherwise stated, can be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

Claims

1. A method for extracting nickel carbonate in a nickel fluoride production process, characterized in that: include: After the nickel carbonate precipitate is generated and filtered, the preset calcium carbonate flotation pre-process step is performed, and the calcium carbonate flotation pre-process step includes: mixing a mixture of calcium carbonate and nickel carbonate with water to prepare a slurry of a certain concentration; adjusting the pH value to a preset calcium carbonate flotation alkalinity value; adding a first collector and a frother; and introducing air until calcium carbonate foam is generated; Acquiring a first side image after performing a pre-sequence step of calcium carbonate flotation; analyzing the first side image to obtain a first dividing line height; Based on the first dividing line height and the preset basic flotation subsequent step, the first actual flotation subsequent step is determined and executed, and the basic flotation subsequent step includes: collecting foam; filtering and washing the collected foam; After carrying out the first actual flotation subsequent step, nickel carbonate is obtained.

2. The method for extracting nickel carbonate in a nickel fluoride production process according to claim 1, characterized in that: The method for obtaining nickel carbonate after performing the first actual flotation subsequent step comprises: The remaining slurry is subjected to a preset dehydration treatment step to obtain nickel carbonate, wherein the dehydration treatment step comprises: filtering the slurry; and heating and drying.

3. The method for extracting nickel carbonate in a nickel fluoride production process according to claim 2, characterized in that: The dehydration step also includes: Get the current sediment weight; A washing step is performed before the step of filtering the slurry, the washing step comprising: washing with a dilute hydrochloric acid solution and filtering; Obtaining the weight of the cleaned precipitate after performing the cleaning step; The dehydration step is completed when the weight of the washed sediment remains unchanged; When the weight of the washed precipitate becomes smaller, the washing step is continued.

4. The method for extracting nickel carbonate in a nickel fluoride production process according to claim 1, characterized in that: Also included is another method for obtaining nickel carbonate after performing the subsequent step of actual flotation, the method comprising: After executing the first actual flotation subsequent step, a preset nickel carbonate flotation pre-order step is executed, wherein the nickel carbonate flotation pre-order step includes: adjusting the pH value to a preset nickel carbonate flotation neutral value; adding a second collector and a frother; and introducing air until nickel carbonate foam is generated; Acquiring a second side image after performing a pre-sequence step of nickel carbonate flotation; analyzing the second side image to obtain a second dividing line height; A second actual flotation subsequent step is determined and executed based on the second dividing line height and the basic flotation subsequent step.

5. The method for extracting nickel carbonate in a nickel fluoride production process according to claim 4, characterized in that: The method of performing a nickel carbonate flotation pre-step after performing a first actual flotation post-step comprises: After performing the first actual flotation subsequent step, repeatedly performing the calcium carbonate flotation preceding step and acquiring the first side image; When the first side image does not have the first dividing line height, performing the nickel carbonate flotation pre-sequence step; When the first dividing line height exists in the first side image, the first actual flotation subsequent step continues to be determined and executed until the first dividing line height does not exist in the first side image.

6. The method for extracting nickel carbonate in a nickel fluoride production process according to claim 5, characterized in that: Before performing the pre-step of calcium carbonate flotation, the method further includes the following steps: Obtain the weight of nickel carbonate precipitate and the weight of calcium carbonate introduced; The product calcium-nickel ratio is calculated based on the weight of nickel carbonate precipitation, the weight of calcium carbonate introduced and a preset conversion equation; Based on the product calcium-nickel ratio and the preset basic calcium-nickel flotation pre-step, the actual calcium-nickel flotation pre-step is determined and executed, and the basic calcium-nickel flotation pre-step includes: mixing a mixture of calcium carbonate and nickel carbonate with water to prepare a slurry of a certain concentration; adjusting the pH value to a preset calcium-nickel flotation weak alkaline value; adding a first collector, a second collector and a frother; and introducing air until calcium-nickel mixed foam is generated; A third side image is obtained after performing the actual calcium-nickel flotation pre-sequence step; analyzing the third lateral image to obtain a third dividing line height; The third actual flotation subsequent step is determined based on the third dividing line height and the basic flotation subsequent step and is performed to obtain nickel carbonate precipitation.

7. The method for extracting nickel carbonate in a nickel fluoride production process according to claim 6, characterized in that: The method of analyzing the third side image to obtain the height of the third dividing line includes: The third side image obtained after performing the actual calcium-nickel flotation pre-sequence step is defined as the current third side image, and the corresponding third dividing line height is defined as the current third dividing line height; After performing the actual calcium-nickel flotation pre-process step, continue to perform the calcium carbonate flotation pre-process step and obtain analysis to obtain the fourth dividing line height; When the fourth dividing line height is lower than the current third dividing line height, the fourth dividing line height is updated to the current third dividing line height, and the calcium carbonate flotation pre-sequence step is continued to be executed and the fourth dividing line height is obtained and analyzed until the fourth dividing line height is equal to the current third dividing line height; When the fourth dividing line height is equal to the current third dividing line height, the nickel carbonate flotation pre-sequence step is performed and the fifth dividing line height is obtained and analyzed, and the fourth dividing line height is updated to the current third dividing line height; When the fifth dividing line height is lower than the current third dividing line height, the fifth dividing line height is updated to the current third dividing line height, and the nickel carbonate flotation pre-sequence step is continued to be performed and the fifth dividing line height is obtained and analyzed until the fifth dividing line height is equal to the current third dividing line height; When the fifth dividing line height is equal to the current third dividing line height, the corresponding current third dividing line height is output.

8. A nickel carbonate extraction system in a nickel fluoride production process, characterized in that: include: An acquisition module, used to acquire a first side image, a current precipitate weight, a cleaned precipitate weight, a second side image, a nickel carbonate precipitate weight, an introduced calcium carbonate weight, and a third side image; A memory for storing a program of a control method for extracting nickel carbonate in a nickel fluoride production process according to any one of claims 1 to 7; The program in the processor memory can be loaded and executed by the processor to implement a control method for extracting nickel carbonate in a nickel fluoride production process as described in any one of claims 1 to 7.

9. Intelligent terminal, characterized in that: The method comprises a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and executes a method for extracting nickel carbonate in a nickel fluoride production process as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that A computer program is stored which can be loaded by a processor and execute a method for extracting nickel carbonate in a nickel fluoride production process as claimed in any one of claims 1 to 7.

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