Methods, apparatus, electronic equipment and media for determining flocculants

Abstract

This invention belongs to the field of mineral processing technology and discloses a method, apparatus, electronic equipment, and medium for determining flocculants. The flocculant determination method is used in the hydrometallurgical process of laterite nickel ore to determine the selection and dosage of flocculants. It includes obtaining the pH value and surface potential of the slurry in the thickener, determining the flocculant type based on the pH and potential values; obtaining the feed and discharge slurry parameters of the thickener, determining the first settling velocity of the slurry after adding flocculant and the second settling velocity without adding flocculant based on these parameters; and determining the flocculant dosage based on the first and second settling velocities. This method eliminates the need for manual trial and error or experience in determining the flocculant, thus solving the problems of low efficiency and error-proneness in existing flocculant determination methods. It ensures that the effect of the slurry after thickening meets expectations, thereby effectively reducing the possibility of negative impacts on metallurgical quality.

Description

Technical Field

[0001] This invention relates to the field of mineral processing technology, and in particular to a method, apparatus, electronic device, and medium for determining flocculants. Background Technology

[0002] High-efficiency slurry thickening has applications in mineral processing, hydrometallurgy, and environmental remediation. Its core principle lies in using a thickener to settle and thicken materials such as mineral slurries, post-reaction slurries, and waste cement slurries, accelerating the solid-liquid separation process. To accelerate material settling and separation, flocculants are often added during the thickening process. Their main function is to agglomerate small, difficult-to-settle particles in the material through flocculation, forming large flocs to accelerate sedimentation. The flocculation and sedimentation process is a dynamic, non-linear process, generally including flocculation-split-reflocculation-resplit. Determining the type, dosage, and settling velocity of the flocs plays a crucial role in the design of the thickener and the material processing efficiency. Therefore, how to scientifically and rationally select flocculants and determine their dosage has become an important issue in the thickening process.

[0003] The determination of flocculants involves selecting the type and dosage. Currently, it mainly relies on the experience of workers to select the appropriate type of flocculant and directly determine the dosage based on the actual amount of raw materials such as ore slurry. Especially in the hydrometallurgical process of laterite nickel ore, due to its continuous production characteristics, it often involves multiple processes such as thickening of the raw ore slurry, CCD (Counter-Current Decantation) washing and thickening of the leached slurry, thickening and separation of iron and aluminum slag in the iron and aluminum removal (impurity removal) stage, and thickening and separation of nickel and cobalt precipitated (MHP product preparation stage), all of which require the use of large thickeners. Relying on experience to determine the flocculant is not only inefficient, but the effect after thickening is also difficult to achieve the expected results, which can easily have a negative impact on metallurgical quality. Summary of the Invention

[0004] The purpose of this invention is to provide a method, apparatus, electronic device and medium for determining flocculants, which solves the problem that the determination of flocculants in the prior art mainly relies on experience, resulting in low efficiency and poor effect after thickening, which has a negative impact on metallurgical quality.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] Firstly, this application provides a method for determining flocculants, which is used in the hydrometallurgical process of laterite nickel ore to determine the selection and dosage of flocculants, including:

[0007] The pH value of the slurry inside the thickener and the potential value of the slurry particle surface are obtained, and the type of flocculant is determined based on the pH value and the potential value.

[0008] Obtain the feed slurry parameters and discharge slurry parameters of the thickener, and determine the first settling velocity of the slurry in the thickener after adding flocculant and the second settling velocity without adding flocculant based on the feed slurry parameters and the discharge slurry parameters;

[0009] The dosage of flocculant is determined based on the first settling velocity and the second settling velocity.

[0010] Optionally, the feed slurry parameters include: feed slurry concentration C1 and feed slurry density ρ1; the discharge slurry parameters include: discharge slurry concentration C2, discharge slurry density ρ2 and discharge volumetric flow rate G; and the settling area S of the thickener is obtained.

[0011] First sinking velocity

[0012] Optionally, the feed slurry parameters also include the viscosity η of the feed slurry without flocculant; and the liquid phase density ρ0, slurry density ρ3, and average particle size d of the slurry.

[0013] Second settling velocity

[0014] Optionally, determining the dosage of flocculant based on the first settling velocity and the second settling velocity includes:

[0015] Based on the ratio of the first settling velocity to the second settling velocity, the concentration of the flocculant is determined, and the dosage of the flocculant in the liquid phase is obtained based on the concentration of the flocculant.

[0016] Optionally, the dosage of flocculant is determined based on the ratio of the first settling velocity to the second settling velocity and the concentration of flocculant in the liquid phase, including:

[0017] Based on the ratio of the first settling velocity to the second settling velocity, k = v min / v a ,according to Determine the concentration C of the flocculant, and then determine the dosage of the flocculant based on the concentration C.

[0018] Optionally, determining the flocculant type based on the pH value and the potential value includes:

[0019] When the pH value is within a first preset pH range and the potential value is within a first preset potential range, the flocculant is non-ionic.

[0020] When the pH value is within a second preset pH range and the potential value is within a second preset potential range, the flocculant is an anionic type.

[0021] When the pH value is within a third preset pH range and the potential value is within a third preset potential range, the flocculant is cationic.

[0022] The pH value within the third preset pH range is greater than the pH value within the first preset pH range and the pH value within the second preset pH range.

[0023] The potential value within the first preset potential range is greater than the potential value within the third preset potential range.

[0024] Optionally, the lower limit of the second preset pH range is less than the lower limit of the first preset pH range, and the upper limit of the second preset pH range is equal to the upper limit of the first preset pH range.

[0025] Secondly, this application provides a flocculant determination apparatus for determining the type and dosage of flocculant in the hydrometallurgical process of laterite nickel ore, including:

[0026] The selection module is used to obtain the pH value of the thickener and the potential value of the surface of the slurry particles, and to determine the type of flocculant based on the pH value and the potential value.

[0027] The settling velocity calculation module is used to obtain the feed slurry parameters and discharge slurry parameters of the thickener, and to determine the first settling velocity of the slurry in the thickener after adding flocculant and the second settling velocity without adding flocculant based on the feed slurry parameters and the discharge slurry parameters.

[0028] A dosage calculation module is used to determine the dosage of flocculant based on the first settling velocity and the second settling velocity.

[0029] Thirdly, this application also provides an electronic device including a memory and a processor, the memory for storing a program; the processor being coupled to the memory for executing the program stored in the memory to implement the steps of the flocculant selection method as described in any one of the first aspects.

[0030] Fourthly, this application also provides a non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, when the computer program is executed by a processor, it implements the steps of the flocculant selection method as described in any of the first aspects.

[0031] The beneficial effects of this invention are:

[0032] The flocculant determination method, apparatus, electronic equipment, and medium provided in this application address the issue that when slurry particles carry an electrical charge on their surface, different particles cannot approach each other due to electrostatic repulsion and hydration, resulting in slow particle settling, difficulty in compression, low underflow concentration, and high turbidity in the supernatant during sedimentation. At this point, based on the slurry's pH and potential values, a flocculant with an opposite charge to the slurry is added. This allows for strong electrostatic attraction and aggregation between the flocculant molecules and particles. Once the charge on the surface of the slurry particles is completely neutralized, the electrostatic repulsion between particles gradually decreases and eventually disappears, promoting particle aggregation and accelerating slurry sedimentation.

[0033] Furthermore, the purpose of adding flocculants is to ensure that the settling velocity of the slurry meets operational requirements. As flocculants are added, the settling velocity of the slurry changes, and the dosage of flocculants can be accurately determined using the first and second settling velocities. Therefore, the method provided in this application determines the type of flocculant by collecting the pH and potential values ​​of the slurry, and then accurately determines the dosage of the flocculant based on the first and second settling velocities. The entire process can be quickly and automatically completed by a corresponding program, eliminating the need for manual determination through trial and error or experience. This solves the problems of low efficiency and error-proneness in existing flocculant determination methods, ensuring that the effect of the slurry after thickening meets expectations, thereby effectively reducing the possibility of negative impacts on metallurgical quality. Attached Figure Description

[0034] Figure 1 A flowchart illustrating an embodiment of the method for determining the selection and dosage of flocculant in the hydrometallurgical process of laterite nickel ore provided in this application;

[0035] Figure 2 The flowchart provided in this application for determining the flocculant type based on the first slurry parameters;

[0036] Figure 3 A schematic diagram of an embodiment of the apparatus for determining the selection and dosage of flocculant in the hydrometallurgical process of laterite nickel ore provided in this application;

[0037] Figure 4 A schematic diagram of an embodiment of the electronic device provided in this application.

[0038] In the picture:

[0039] 300. Flocculant determination device; 301. Selection module; 302. Settling velocity calculation module; 303. Dosage calculation module; 400. Electronic equipment; 401. Processor; 402. Memory; 403. Display. Detailed Implementation

[0040] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0041] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0042] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0044] This application discloses a method, apparatus, electronic device, and medium for determining flocculants.

[0045] like Figure 1 As shown, this method for determining flocculants is applied in the hydrometallurgical process of laterite nickel ore, and includes:

[0046] S101. Obtain the pH value of the slurry inside the thickener and the potential value of the slurry particle surface, and determine the type of flocculant based on the pH value and potential value.

[0047] pH directly affects the hydrolysis rate of flocculants, the form and properties of hydrolysis products, and thus the sedimentation effect. Different pH ranges can preliminarily determine the type of flocculant. Potential, on the other hand, influences flocculation primarily through charge neutralization and adsorption. When slurry particles carry a charge on their surface, different particles cannot approach each other due to electrostatic repulsion and hydration, resulting in slow particle settling, difficulty in compression, low underflow concentration, and high turbidity in the supernatant. Adding a flocculant with an opposite charge to the slurry at this time allows for strong charge attraction and aggregation between flocculant molecules and particles. Once the charge on the surface of the slurry particles is completely neutralized, the electrostatic repulsion between particles gradually decreases and eventually disappears, promoting particle aggregation and accelerating slurry sedimentation. Therefore, a suitable type of flocculant can be selected based on the slurry's pH and potential values, both of which can be directly measured using existing equipment. It should be understood that the slurry in this embodiment can be replaced with post-reaction slurry, waste cement slurry, or other materials that can be used in a thickener. The principle of determining the flocculant during the thickening process of such materials in the thickener is similar, and will not be listed here one by one.

[0048] S102. Obtain the feed slurry parameters and discharge slurry parameters of the thickener, and determine the first settling velocity of the slurry in the thickener after adding flocculant and the second settling velocity without adding flocculant based on the feed slurry parameters and discharge slurry parameters.

[0049] Feed slurry parameters refer to various parameters of the slurry when it is injected into the thickener, including concentration and density. Discharge slurry parameters refer to the parameters the thickener is expected to achieve after adding flocculant at a set dosage. In other words, discharge slurry parameters are the target parameters that the discharged slurry is intended to achieve. At least two experimental groups are set up: one group without flocculant and the other groups with flocculant of different parameters. The first and second settling velocities are determined based on the parameters obtained from multiple experimental groups. Settling velocity refers to the amount of slurry that settles per unit time.

[0050] S103. Determine the dosage of flocculant based on the first settling velocity and the second settling velocity.

[0051] The first settling velocity represents the sedimentation effect after the flocculant is added, while the second settling velocity represents the sedimentation effect without the flocculant. After obtaining multiple first settling velocities, they can be compared with the second settling velocities respectively. This allows for the accurate determination of the dosage of flocculant required for the slurry during thickening operations once the type of flocculant is identified.

[0052] Through the above steps S101 to S103, the type of flocculant can be determined based on the pH and potential values ​​of the slurry itself, and the dosage of flocculant can be determined based on the first and second settling velocities. This eliminates the need to rely solely on the experience of the workers to determine the type and dosage of flocculant, effectively improving the efficiency and accuracy of flocculant determination. Moreover, the dosage of flocculant is quickly and accurately calculated based on the first and second settling velocities, allowing for more precise control of the amount of flocculant. It eliminates the need for manual determination through trial and error or experience, thereby ensuring that the thickened effect meets the discharge slurry parameters and achieves the expected results. This, in turn, ensures the smooth completion of the laterite nickel ore hydrometallurgical process and effectively reduces the possibility of negative impacts on metallurgical quality.

[0053] In some embodiments, such as Figure 2 As shown, determining the flocculant type based on the first slurry parameters includes:

[0054] S201. When the pH value is within the first preset pH range and the potential value is within the first preset potential range, the flocculant is non-ionic.

[0055] S202. When the pH value is within the second preset pH range and the potential value is within the second preset potential range, the flocculant is anionic.

[0056] S203. When the pH value is within the third preset pH range and the potential value is within the third preset potential range, the flocculant is cationic.

[0057] Among them, the pH value in the third preset pH range is greater than the pH value in the first preset pH range and the pH value in the second preset pH range; the potential value in the second preset potential range is greater than the potential value in the first preset potential range; and the potential value in the first preset potential range is greater than the potential value in the third preset potential range.

[0058] In some embodiments, the lower limit of the second preset pH range is less than the lower limit of the first preset pH range, and the upper limit of the second preset pH range is equal to the upper limit of the first preset pH range.

[0059] Specifically, the pH value of the first preset pH range is neutral, which can be 6 to 8, and the surface of the slurry particles in the first preset charge range is almost uncharged (Zeta point potential -5mV to 5mV). Non-ionic PAM (Polyacrylamide) is selected as the flocculant, which can exhibit stable flocculation performance, is not affected by pH fluctuations, and has a low degree of ionization, so as not to introduce additional ions, thereby ensuring the stability of the precipitation process.

[0060] The second preset pH range can be 2 to 8. The surface of the slurry particles in the second preset charge range is positively charged (Zeta point potential > 5mV). Anionic PAM is selected as the flocculant, which can effectively neutralize the charge on the surface of suspended particles and reduce the repulsive force between particles, thereby achieving a better sedimentation effect.

[0061] The third preset pH range has a pH > 8, and the surface of the slurry particles in the third preset charge range carries a negative charge (Zeta point potential < -5mV). Cationic PAM is selected as the flocculant, which can effectively combine with charged suspended particles to form stable flocs.

[0062] In some embodiments, the feed slurry concentration C1 and feed slurry density ρ1; the discharge slurry parameters include: discharge slurry concentration C2, discharge slurry density ρ2, and discharge volumetric flow rate G; the settling area S of the thickener is obtained; and the first settling velocity is determined.

[0063] Specifically, after determining the type of flocculant, the optimal dosage for achieving the best results becomes a crucial issue. The core purpose of adding flocculant is to increase the settling velocity of the slurry. In a given thickener, to achieve the target discharge concentration and flow rate, after measuring C1, ρ1, and S, and setting C2, ρ2, and G, the first settling velocity must satisfy the following relationship: The sedimentation rate of the slurry after the addition of flocculant can then be obtained.

[0064] In some embodiments, the feed slurry parameters also include the viscosity η of the feed slurry without flocculant; obtaining the liquid phase density ρ0, slurry density ρ3, and average particle size d of the slurry; and the second settling velocity.

[0065] Understandably, for a given slurry, ρ0, ρ3, and d can all be directly measured without the addition of flocculants, and the second settling velocity... According to the second settling velocity v a This allows us to determine the sedimentation state of the slurry without the addition of flocculant, where g represents gravity.

[0066] In some embodiments, determining the dosage of flocculant based on a first settling velocity and a second settling velocity includes: determining the concentration of flocculant based on the ratio of the first settling velocity to the second settling velocity, and determining the dosage of flocculant in the liquid phase based on the concentration of flocculant.

[0067] Specifically, the ratio of the first settling velocity to the second settling velocity can directly reflect the improvement in the sedimentation effect after adding the selected flocculant. The dosage of flocculant can be determined based on the value of this ratio.

[0068] In some embodiments, determining the flocculant dosage based on the ratio of the first settling velocity to the second settling velocity and the concentration of the flocculant in the liquid phase includes: determining the flocculant dosage based on the ratio of the first settling velocity to the second settling velocity k = v min / v a ,according to Determine the concentration C of the flocculant, and then determine the dosage of the flocculant based on the concentration C.

[0069] It is understandable that the settling velocity of the slurry changes with the addition of flocculant. At this point, the settling velocity of the slurry is proportional to the settling velocity without flocculant, k = v. min / v a v min The initial settling velocity after adding flocculant, ν a For the second settling velocity, the value of k and the concentration of flocculant in the liquid phase satisfy the following relationship: Therefore, the required dosage of flocculant can be calculated based on the concentration in the liquid phase.

[0070] It is readily understood that the experimental calibration method described above in this embodiment can adopt existing conventional methods, and this embodiment is not limited thereto. For example, four equal portions of slurry to be settled are used, one portion without flocculant, and the other three portions with different dosages of flocculant. The settling velocity of the four portions of slurry to be settled is measured, and the k-value corresponding to the three portions with flocculant is calculated. Simultaneously, the flocculant concentration in the three portions of slurry to be settled is calculated. Based on the three k-values, three flocculant concentration values, and the above formula... Establish a three-variable linear equation and solve it to obtain the value.

[0071] The feed flow rate and solids content are known, and the required flocculant dosage can be calculated based on the liquid volume, for example: m = C × (1 - C1) × v0. Where m is the amount of flocculant added, i.e., the dosage, C is the concentration of flocculant in the liquid phase, C1 is the concentration of the slurry fed to the thickener, and v0 is the feed flow rate.

[0072] This application has undergone the following experimental verification according to the methods described in the above embodiments:

[0073] Experimental Example 1:

[0074] The slurry from laterite nickel ore beneficiation that enters the thickener was tested and found to have a feed concentration of 11.8%, a pH of 6.8, and a zeta potential of 2.36 mV. At this point, non-ionic PAM was selected.

[0075] Determine the relevant parameters of the feed slurry, discharge slurry, and thickener, and substitute them into the above formula. Get v min Where, C1=0.118, ρ1=1.092*103kg / m 3Given C² = 0.4, ρ² = 1.400 * 10³ kg / m³, S = 25 m², G = 400 m³ / h, according to the formula... Calculate v min ≈8.04 mm / s. It is worth noting that C2 = 0.4 and ρ2 = 1.400 * 10³ kg / m³. 3 The target slurry concentration and density required for the output slurry of the thickener are the set parameters.

[0076] Where, ρ0=1.0*103kg / m 3 ρ3=3.5*103kg / m 3 d = 10 μm, η = 0.035 Pa·s, according to the formula v was obtained after calculation. a ≈2.8mm / s; combined with k=v min / v a k = 2.8525, in combination The calculation yields C≈0.00001kg / m 3 .

[0077] When calculating C, a1 = -0.0516, a2 = 1.724 * 10 -6 a3 = 2.297 * 10 -11 The values ​​a1 to a3 above were calculated according to the exemplary method described in this embodiment, that is, by testing four equal portions of laterite nickel ore slurry after beneficiation, one portion of which had no flocculant added, and the other three portions were prepared at a concentration of C = 0.000015 kg / m³. 3 C = 0.00002 kg / m 3 C = 0.000025 kg / m 3 After adding flocculant, four slurry samples were tested and three first settling velocities (v) were obtained. min And a second sinking velocity v a The k values ​​were calculated to be 6.045, 10.867, and 18.48, respectively. The flocculant concentration C and k values ​​were then substituted into the formula. We calculate a1 = -0.0516, a2 = 1.724 * 10 -6 a3 = 2.297 * 10 -11 .

[0078] Substituting the obtained C value into the formula m = C × (1 - C1) × v0, we get m = 16.74 kg / h, which translates to a flocculant consumption of 74.75 g / t. Where v0 = 2044.5 m 3 / h, which is obtained by real-time monitoring of the feed slurry.

[0079] The flocculant type and dosage determined according to the above steps are added to the thickener, at a discharge volumetric flow rate G = 400 m³ / h. 3 The underflow discharge from the thickener was controlled at / h, and the concentration of the underflow discharge was measured. The actual underflow discharge concentration was found to be 39.7%, and the density was 1.396*103 kg / m³. 3 Comparison revealed that the actual underflow concentration and density of the thickener were similar to the target discharge slurry concentration and density (i.e., C2 = 0.4, ρ2 = 1.400 * 10³ kg / m³ mentioned above). 3 The results are basically consistent, which indicates that the type and dosage of flocculant determined in this application can meet and achieve the predetermined discharge requirements of the thickened bottom flow slurry.

[0080] Experimental Example 2:

[0081] The slurry after nickel-cobalt plating was then fed into a thickener and tested. The feed concentration was found to be 6.8%, pH was 7.0, and Zeta potential was 9.86 mV. Anionic PAM was selected at this time.

[0082] Determine the relevant parameters for the feed slurry, discharge slurry, and thickener, where C1 = 0.068 and ρ1 = 1.046 * 10³ kg / m³. 3 , C2=0.3, ρ2=1.239*103kg / m 3 S = 31.4 m², G = 400 m 3 / h, according to the formula Calculate v min ≈6.19 mm / s. It is worth noting that C2 = 0.3 and ρ2 = 1.239 * 10³ kg / m³. 3 The target slurry concentration and density required to be achieved by the thickener's output slurry.

[0083] Where, ρ0=1.0*103kg / m 3 ρ3=2.8*103kg / m 3 d = 5.8 μm, η = 0.028 Pa·s, after Calculate v a ≈0.83 mm / s; calculated with k = 7.46, C ≈ 0.000011 kg / m 3 The obtained v min Combined with v a The concentration C of flocculant in the slurry required to achieve the target discharge requirement is obtained.

[0084] When calculating the value of C, a1 = 0.0965, a2 = -2.893 * 10 -6 a3 = 3.636 * 10 -11The values ​​a1 to a3 above were calculated according to the exemplary method described in this embodiment, i.e., by testing four equal portions of the slurry after nickel-cobalt precipitation, one portion of which had no flocculant added, and the other three portions at a concentration C = 0.00001 kg / m³. 3 Concentration C = 0.000015 kg / m³ 3 Concentration C = 0.00002 kg / m³ 3 By adding flocculant and measuring the settling velocity of four slurries, three primary settling velocities (v) can be obtained. min And a second sinking velocity v a The k values ​​were calculated to be 5.855, 15.334, and 25.683, respectively. The flocculant concentration C and the k value were then substituted into the formula. The calculations yield a1 = 0.0965 and a2 = -2.893 * 10. -6 a3 = 3.636 * 10 -11 .

[0085] Substituting the obtained C value into the formula m=C×(1-C1)×v0, we get m=21.4kg / h, which translates to a flocculant consumption of 150.8g / t. Where v0=2184m 3 / h, which is obtained by real-time monitoring of the feed slurry.

[0086] The flocculant type and dosage determined according to the above steps are added to the thickener, at a discharge volumetric flow rate G = 400 m³ / h. 3 The underflow discharge from the thickener was controlled at / h, and the concentration of the underflow discharge was measured. The actual underflow discharge concentration was found to be 29.5%, and the density was 1.234*103 kg / m³. 3 Comparison revealed that the actual underflow concentration and density of the thickener were similar to the target discharge slurry concentration and density (i.e., C2 = 0.3, ρ2 = 1.239 * 10³ kg / m³ mentioned above). 3 The results are basically consistent, which indicates that the type and dosage of flocculant determined in this application can meet and achieve the predetermined discharge requirements of the thickened bottom flow slurry.

[0087] like Figure 3 As shown, the flocculant determining device 300 is used to determine the type and dosage of flocculant in the hydrometallurgical process of laterite nickel ore. It includes a selection module 301, a settling velocity calculation module 302, and a dosage calculation module 303. The selection module 301 is used to obtain the pH value of the thickener and the potential value of the slurry particle surface, and determines the flocculant type based on the pH value and the potential value. The settling velocity calculation module 302 is used to obtain the feed slurry parameters and discharge slurry parameters of the thickener, and determines the first settling velocity of the slurry in the thickener after adding flocculant and the second settling velocity without adding flocculant based on the feed slurry parameters and the discharge slurry parameters. The dosage calculation module 303 is used to determine the flocculant dosage based on the first and second settling velocities.

[0088] The device for determining the selection and dosage of flocculant in the hydrometallurgical process of laterite nickel ore provided in the above embodiments can realize the technical solution described in the method embodiments for determining the selection and dosage of flocculant in the hydrometallurgical process of laterite nickel ore. The specific implementation principle of each module or unit can be found in the corresponding content in the method embodiments for determining the selection and dosage of flocculant in the hydrometallurgical process of laterite nickel ore, which will not be repeated here.

[0089] like Figure 4 As shown, this application also provides an electronic device 400. The electronic device 400 includes a processor 401, a memory 402, and a display 403. Figure 4 Only some components of the electronic device 400 are shown, but it should be understood that it is not required to implement all the components shown, and more or fewer components may be implemented instead.

[0090] In some embodiments, memory 402 may be an internal storage unit of electronic device 400, such as a hard disk or memory of electronic device 400. In other embodiments, memory 402 may also be an external storage device of electronic device 400, such as a plug-in hard disk, smart media card (SMC), secure digital card (SD), flash card, etc., equipped on electronic device 400.

[0091] Furthermore, the memory 402 may include both internal storage units of the electronic device 400 and external storage devices. The memory 402 is used to store application software and various types of data installed on the electronic device 400.

[0092] In some embodiments, processor 401 may be a central processing unit (CPU), microprocessor, or other data processing chip, used to run program code stored in memory 402 or process data, such as the method for determining the selection and dosage of flocculant in the hydrometallurgical process of laterite nickel ore in this application.

[0093] In some embodiments, display 403 may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, or an OLED (Organic Light-Emitting Diode) touchscreen. Display 403 is used to display information from electronic device 400 and to display a visual user interface. Processor 401, memory 402, and display 403 communicate with each other via a system bus.

[0094] In some embodiments of this application, when processor 401 executes the program in memory 402 that determines the selection and dosage of flocculant in the hydrometallurgical process of laterite nickel ore, the following steps can be implemented:

[0095] Obtain the pH value of the slurry inside the thickener and the potential value of the slurry particle surface, and determine the type of flocculant based on the pH value and potential value;

[0096] Obtain the feed slurry parameters and discharge slurry parameters of the thickener, and determine the first settling velocity of the slurry in the thickener after adding flocculant and the second settling velocity without adding flocculant based on the feed slurry parameters and discharge slurry parameters;

[0097] The dosage of flocculant is determined based on the first and second settling velocities.

[0098] It should be understood that when the processor 401 executes the program in the memory 402 that determines the selection and dosage of flocculant in the laterite nickel ore hydrometallurgical process, in addition to the functions mentioned above, it can also perform other functions, as can be found in the description of the corresponding method embodiments above.

[0099] Furthermore, this application does not specifically limit the type of electronic device 400 mentioned in the embodiments. Electronic device 400 can be a mobile phone, tablet computer, personal digital assistant (PDA), wearable device, laptop computer, or other portable electronic device. Exemplary embodiments of portable electronic devices include, but are not limited to, portable electronic devices running iOS, Android, Microsoft, or other operating systems. The aforementioned portable electronic device can also be other portable electronic devices, such as a laptop computer with a touch-sensitive surface (e.g., a touch panel). It should also be understood that in some other embodiments of this application, electronic device 400 may not be a portable electronic device, but rather a desktop computer with a touch-sensitive surface (e.g., a touch panel).

[0100] Furthermore, this application also provides a non-transitory computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements a method for determining the selection and dosage of flocculant in the hydrometallurgical process of laterite nickel ore provided by the methods described above, the method comprising:

[0101] Obtain the pH value of the slurry inside the thickener and the potential value of the slurry particle surface, and determine the type of flocculant based on the pH value and potential value;

[0102] Obtain the feed slurry parameters and discharge slurry parameters of the thickener, and determine the first settling velocity of the slurry in the thickener after adding flocculant and the second settling velocity without adding flocculant based on the feed slurry parameters and discharge slurry parameters;

[0103] The dosage of flocculant is determined based on the first and second settling velocities.

[0104] Those skilled in the art will understand that all or part of the processes of the methods described in the above embodiments can be implemented by a computer program instructing related hardware, and the program can be stored in a computer-readable storage medium. The computer-readable storage medium may be a disk, optical disk, read-only memory, or random access memory, etc.

[0105] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A method for determining flocculants, characterized in that, Used in determining the selection and dosage of flocculants in the hydrometallurgical process of laterite nickel ore, including: To obtain the pH value of the slurry inside the thickener and the potential value of the slurry particle surface; When the pH value is within a first preset pH range and the potential value is within a first preset potential range, the flocculant is non-ionic. When the pH value is within a second preset pH range and the potential value is within a second preset potential range, the flocculant is an anionic type. When the pH value is within a third preset pH range and the potential value is within a third preset potential range, the flocculant is cationic. The pH value within the third preset pH range is greater than the pH value within the first preset pH range and the pH value within the second preset pH range. The potential value within the first preset potential range is greater than the potential value within the third preset potential range; Obtain the feed slurry parameters and discharge slurry parameters of the thickener, and determine the first settling velocity of the slurry in the thickener after adding flocculant and the second settling velocity without adding flocculant based on the feed slurry parameters and the discharge slurry parameters; The feed slurry parameters include: feed slurry concentration C1 and feed slurry density ρ1; the discharge slurry parameters include: discharge slurry concentration C2, discharge slurry density ρ2 and discharge volumetric flow rate G; obtain the settling area S of the thickener; First sinking velocity ; The feed slurry parameters also include the viscosity η of the feed slurry without flocculant; and the liquid phase density ρ0, slurry density ρ3, and average particle size d of the slurry are obtained. Second settling velocity ; Based on the ratio of the first sinking velocity to the second sinking velocity ,according to Determine the concentration C of the flocculant, and then determine the dosage of the flocculant based on the concentration C.

2. The method for determining flocculants according to claim 1, characterized in that, The lower limit of the second preset pH range is less than the lower limit of the first preset pH range, and the upper limit of the second preset pH range is equal to the upper limit of the first preset pH range.

3. A flocculant determining device, characterized in that, Determining the type and dosage of flocculant in the hydrometallurgical process of laterite nickel ore using the flocculant determination method as described in claim 1 or 2, including: The selection module is used to obtain the pH value of the slurry in the thickener and the potential value of the slurry particle surface, and to determine the flocculant type based on the pH value and the potential value. The settling velocity calculation module is used to obtain the feed slurry parameters and discharge slurry parameters of the thickener, and to determine the first settling velocity of the slurry in the thickener after adding flocculant and the second settling velocity without adding flocculant based on the feed slurry parameters and the discharge slurry parameters. A dosage calculation module is used to determine the dosage of flocculant based on the first settling velocity and the second settling velocity.

4. An electronic device, characterized in that, It includes a memory and a processor, the memory being used to store a program; the processor is coupled to the memory and is used to execute the program stored in the memory to implement the steps of the flocculant determination method as described in claim 1 or 2.

5. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the flocculant determination method as described in claim 1 or 2.

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