Method and system for determining optimal discharge ore pulp concentration of thickener

Abstract

Disclosed in the present invention are a method and system for determining an optimal discharge ore pulp concentration of a thickener. The method comprises: determining a first optimal discharge ore pulp concentration range of a thickener on the basis of the highest viscosity of an ore pulp; determining a second optimal discharge ore pulp concentration range of the thickener on the basis of the minimum scale removal period of a discharge pipe; determining a third optimal discharge ore pulp concentration range of the thickener on the basis of a feed ore pulp concentration of the thickener, a feed ore pulp density of the thickener, an effective volume of the thickener, a discharge amount, and an addition amount of a flocculant; and determining an optimal discharge ore pulp concentration range of the thickener. The beneficial effects of the present invention are as follows: a discharge ore pulp concentration of the thickener is constrained by means of discharge ore pulp viscosity control, scale removal period control and effective settling time control, and finally, the optimal discharge ore pulp concentration range of the thickener is obtained, so that the problems of a heavy pumping load, an excessively short scale removal period of the discharge pipe, and the overflow of the ore pulp, which are caused by an inappropriate discharge ore pulp concentration can be prevented, and the highest production efficiency and economic benefits can be achieved.

Description

A method and system for determining the optimal discharge slurry concentration of a thickener Technical Field

[0001] The present invention relates to the technical field of thickeners, and in particular to a method and system for determining an optimal discharge slurry concentration of a thickener. Background Art

[0002] A thickener is a solid-liquid separation device based on gravity settling. It is typically a shallow cylindrical tank with a conical bottom. It concentrates low-concentration slurry into a high-concentration underflow slurry through gravity settling. The thickened underflow slurry is discharged from the underflow outlet at the bottom of the thickener using a slow-moving rake installed inside the thickener.

[0003] The discharge slurry concentration of the thickener can be set as needed. In the existing technology, the appropriate discharge slurry concentration is mainly determined by the workers' experience. When determining the optimal discharge slurry concentration, the following factors are mainly considered:

[0004] 1) Production efficiency: Increasing slurry concentration can reduce the volume of liquid to be transported, pumped, and handled, thereby reducing processing costs. This can improve the efficiency of the production process and save energy and resources.

[0005] 2) Energy consumption: Processing more concentrated slurries usually requires less pumping power, which increases the high-pressure leaching capacity per unit time and reduces energy consumption.

[0006] 3) Wastewater Discharge: By increasing the slurry concentration, wastewater generation can be reduced. This helps reduce wastewater treatment costs and environmental impact, and complies with sustainable development requirements.

[0007] 4) Resource Utilization Efficiency: High-concentration slurry means the same amount of solid material can be transported and processed using a smaller liquid volume. This contributes to more efficient use of raw materials and resources.

[0008] 5) Reduce costs: Increasing slurry concentration can reduce overall production costs by reducing water usage, lowering wastewater treatment costs, reducing pumping energy consumption and improving production efficiency.

[0009] (6) Fluidity problem: The concentration of iron and aluminum ions in high-concentration slurry is higher, which accelerates the scaling of the reactor and the discharge pipe, shortens the maintenance cycle caused by scaling, and affects the operating efficiency of the unit. At the same time, high-concentration slurry puts a greater load on the pumping facilities.

[0010] Since there are many factors to consider, different staff members may consider different angles, which may lead to large differences in the set discharge slurry concentration. Therefore, it is easy to make misjudgments when determining the discharge slurry concentration through this subjective judgment method, resulting in the discharge slurry concentration being set too high or too low, which is not conducive to achieving a balance point for achieving maximum benefits.

[0011] Summary of the Invention

[0012] In view of this, it is necessary to provide a method for determining the optimal discharge slurry concentration of a thickener, so as to provide a method for determining the discharge slurry concentration that can comprehensively consider different influencing factors and achieve a balance point with maximum benefits.

[0013] In order to achieve the above object, the present invention provides a method for determining the optimal discharge slurry concentration of a thickener, comprising:

[0014] Set the maximum viscosity of the slurry and determine the first optimal discharge slurry concentration range of the thickener based on the maximum viscosity of the slurry;

[0015] Set the minimum cleaning cycle of the discharge pipe and determine the second optimal discharge slurry concentration range of the thickener based on the minimum cleaning cycle of the discharge pipe;

[0016] Obtaining the thickener feed slurry concentration, thickener feed slurry density, thickener effective volume, discharge volume, and flocculant addition amount, and determining the third optimal discharge slurry concentration range of the thickener based on the thickener feed slurry concentration, thickener feed slurry density, thickener effective volume, discharge volume, and flocculant addition amount;

[0017] The optimal discharge slurry concentration range of the thickener is determined based on the first optimal discharge slurry concentration range, the second optimal discharge slurry concentration range and the third optimal discharge slurry concentration range of the thickener.

[0018] In some embodiments, a specific method for determining a first optimal discharge slurry concentration range of a thickener based on the maximum viscosity of the slurry includes the following steps:

[0019] Determine the relationship between pulp viscosity and thickener discharge pulp concentration;

[0020] The first optimal discharge slurry concentration range of the thickener is determined based on the relationship between the slurry viscosity and the discharge slurry concentration of the thickener and the maximum viscosity of the slurry.

[0021] In some embodiments, the relationship between slurry viscosity and thickener discharge slurry concentration is: η = a1C + a2C 2 +a3C 3 +a4

[0022] Among them, C is the concentration of the slurry discharged from the thickener, and a1~a4 are constants.

[0023] In some embodiments, a minimum cleaning cycle of the discharge pipe is set, and a second optimal discharge slurry concentration range of the thickener is determined according to the minimum cleaning cycle of the discharge pipe, specifically including:

[0024] Determine the relationship between the discharge pipe cleaning cycle and the thickener discharge slurry concentration;

[0025] The second optimal discharge slurry concentration range of the thickener is determined based on the relationship between the discharge pipe cleaning cycle and the thickener discharge slurry concentration and the minimum discharge pipe cleaning cycle.

[0026] In some embodiments, the relationship between the cleaning cycle of the discharge pipe and the concentration of the slurry discharged from the thickener is: T = b1C 2 +b2C+b3

[0027] Wherein, T is the cleaning cycle of the discharge pipe, C is the concentration of the slurry discharged from the thickener, and b1 to b3 are constants.

[0028] In some embodiments, obtaining the thickener feed slurry concentration, the thickener feed slurry density, the thickener effective volume, the discharge amount, and the amount of flocculant added, and determining a third optimal discharge slurry concentration range of the thickener based on the thickener feed slurry concentration, the thickener feed slurry density, the thickener effective volume, the discharge amount, and the amount of flocculant added, specifically includes the following steps:

[0029] Obtain the thickener feed slurry concentration, thickener feed slurry density, thickener effective volume, and discharge volume. Using the thickener discharge slurry concentration as an unknown quantity, calculate the relationship between the thickener's maximum effective settling time and the thickener discharge slurry concentration.

[0030] Obtain the amount of flocculant added, take the thickener discharge slurry concentration as the unknown quantity, and calculate the relationship between the effective settling time of the thickener and the thickener discharge slurry concentration;

[0031] According to the maximum effective settling time of the thickener being greater than or equal to the effective settling time of the thickener, the third optimal discharge slurry concentration range of the thickener is obtained.

[0032] In some embodiments, the specific formula for calculating the relationship between the maximum effective settling time of the thickener and the concentration of the thickener discharge slurry is:

[0033] Among them, t max is the maximum effective settling time of the thickener, C1 is the feed slurry concentration of the thickener, ρ1 is the feed slurry density of the thickener, C is the discharge slurry concentration of the thickener, ρ2 is the discharge slurry density of the thickener, V is the effective volume of the thickener, and G is the discharge volume.

[0034] In some embodiments, the formula for calculating the relationship between the effective settling time of the thickener and the concentration of the slurry discharged from the thickener is: C = At γ

[0035] Where t is the effective settling time of the thickener, C is the discharge slurry concentration of the thickener, A and γ are both constants, and γ is determined by the amount of flocculant added.

[0036] The present invention also provides a system for determining the optimal discharge slurry concentration of a thickener, comprising:

[0037] a viscosity control module, the viscosity control module being used to set the maximum viscosity of the slurry and determine a first optimal discharge slurry concentration range of the thickener based on the maximum viscosity of the slurry;

[0038] a cleaning cycle control module, the cleaning cycle control module being used to set a minimum cleaning cycle of the discharge pipe and determine a second optimal discharge slurry concentration range of the thickener according to the minimum cleaning cycle of the discharge pipe;

[0039] a sedimentation rate control module, the sedimentation rate control module being configured to obtain the thickener feed slurry concentration, the thickener feed slurry density, the thickener effective volume, the discharge amount, and the amount of flocculant added, and determine a third optimal discharge slurry concentration range of the thickener based on the thickener feed slurry concentration, the thickener feed slurry density, the thickener effective volume, the discharge amount, and the amount of flocculant added; and

[0040] The integrated control module is used to determine the optimal discharge slurry concentration range of the thickener based on the first optimal discharge slurry concentration range, the second optimal discharge slurry concentration range and the third optimal discharge slurry concentration range of the thickener.

[0041] The present invention also provides a computer-readable storage medium storing one or more programs, which can be executed by one or more processors to implement the steps in the method for determining the optimal discharge slurry concentration of the thickener.

[0042] Compared with the prior art, the beneficial effects of the technical solution proposed in the present invention are: by controlling the viscosity of the discharge slurry, controlling the descaling cycle and controlling the effective sedimentation time, the discharge slurry concentration of the thickener is constrained from three aspects, and finally the optimal discharge slurry concentration range of the thickener is obtained, which can prevent the problems of unsuitable discharge slurry concentration leading to high slurry viscosity, heavy pumping load, too short discharge pipe descaling cycle and too long sedimentation time leading to slurry overflow, and can bring maximum production efficiency and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] FIG1 is a flow chart of an embodiment of a method for determining an optimal discharge slurry concentration of a thickener provided by the present invention;

[0044] FIG2 is a schematic flow chart of step S1 in FIG1 ;

[0045] FIG3 is a schematic flow chart of step S2 in FIG1 ;

[0046] FIG4 is a schematic flow chart of step S3 in FIG1 ;

[0047] FIG5 is a schematic structural diagram of an embodiment of a system for determining the optimal discharge slurry concentration of a thickener provided by the present invention. DETAILED DESCRIPTION

[0048] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, and are not used to limit the scope of the present invention.

[0049] Referring to FIG. 1 , the present invention provides a method for determining the optimal discharge slurry concentration of a thickener, comprising the following steps:

[0050] S1. Set the maximum viscosity of the slurry and determine the first optimal discharge slurry concentration range of the thickener based on the maximum viscosity of the slurry;

[0051] 2 , a specific method for determining the first optimal discharge slurry concentration range of the thickener according to the maximum viscosity of the slurry includes the following steps:

[0052] S11. Determine the relationship between pulp viscosity and thickener discharge pulp concentration;

[0053] S12. Determine a first optimal discharge slurry concentration range of the thickener based on the relationship between the slurry viscosity and the discharge slurry concentration of the thickener and the maximum viscosity of the slurry.

[0054] According to theoretical research and empirical summary, when the composition and particle size distribution are stable, the relationship between slurry viscosity and thickener discharge slurry concentration is: η=a1C+a2C 2 +a3C 3 +a4 (1)

[0055] Wherein, η is the viscosity of the ore pulp discharged from the thickener, C is the concentration of the ore pulp discharged from the thickener, and a1 to a4 are constants.

[0056] For pumping facilities, the lower the viscosity of the thickener discharge slurry, the better. Under the premise of ensuring the leaching reaction efficiency, the fluidity is optimized to reduce the pumping load. The maximum viscosity of the slurry can be set according to actual needs. In this embodiment, the maximum viscosity of the slurry is set to η max , then: η≤η max (2)

[0057] Combining equations (1) and (2), we can obtain the range of thickener discharge slurry concentration C, which is the first optimal discharge slurry concentration range of the thickener.

[0058] S2. Setting the minimum cleaning cycle of the discharge pipe, and determining the second optimal discharge slurry concentration range of the thickener according to the minimum cleaning cycle of the discharge pipe;

[0059] Refer to Figure 3 to set the minimum cleaning cycle for the discharge pipe. The second optimal discharge slurry concentration range of the thickener is determined based on the minimum cleaning cycle for the discharge pipe. Specifically, it includes:

[0060] S21. Determine the relationship between the cleaning cycle of the discharge pipe and the concentration of the slurry discharged from the thickener;

[0061] S22. Determine a second optimal discharge slurry concentration range of the thickener based on the relationship between the discharge pipe cleaning cycle and the thickener discharge slurry concentration and the minimum discharge pipe cleaning cycle.

[0062] The relationship between the discharge pipe cleaning cycle and the thickener discharge slurry concentration is: T = b1C 2 +b2C+b3 (3)

[0063] Wherein, T is the cleaning cycle of the discharge pipe, C is the concentration of the slurry discharged from the thickener, and b1 to b3 are constants.

[0064] In step S2, the scaling problem of the discharge pipe caused by the increase in slurry concentration is mainly considered. Once the discharge pipe is scaled, it will affect the operating efficiency of the unit. Therefore, the discharge pipe needs to be cleaned regularly. The higher the slurry concentration, the shorter the cleaning cycle of the discharge pipe. The minimum cleaning cycle of the discharge pipe can be determined according to the actual situation. In this embodiment, the minimum cleaning cycle of the discharge pipe is set to T min , then: T≥T min (4)

[0065] Combining equations (3) and (4), we can obtain the range of thickener discharge slurry concentration C, which is the second optimal discharge slurry concentration range of the thickener.

[0066] S3. Obtaining the thickener feed slurry concentration, the thickener feed slurry density, the thickener effective volume, the discharge amount, and the amount of flocculant added; and determining a third optimal discharge slurry concentration range of the thickener based on the thickener feed slurry concentration, the thickener feed slurry density, the thickener effective volume, the discharge amount, and the amount of flocculant added;

[0067] Since the relevant parameters of the specified high-efficiency thickener are determined (effective volume, limit load, deep cone radius, taper, etc.), in the stable production process, the thickener produces continuously, and the target discharge slurry concentration and discharge volume are relatively stable. The maximum effective settling time of the slurry is determined. If the actual effective settling time of the slurry is greater than the maximum effective settling time of the slurry, the slurry discharge rate in the thickener is too low, resulting in the slurry filling the inside of the thickener and overflowing. To avoid this situation, the actual effective settling time of the slurry must be less than or equal to the maximum effective settling time of the slurry. The actual effective settling time of the slurry and the maximum effective settling time of the slurry are both related to the discharge slurry concentration. The actual effective settling time of the slurry and the maximum effective settling time of the slurry are expressed by the discharge slurry concentration and substituted into the inequality to obtain the range of the discharge slurry concentration.

[0068] The specific process is as follows:

[0069] Referring to FIG4 , the thickener feed slurry concentration, thickener feed slurry density, thickener effective volume, discharge volume, and flocculant addition amount are obtained. Based on the thickener feed slurry concentration, thickener feed slurry density, thickener effective volume, discharge volume, and flocculant addition amount, the third optimal discharge slurry concentration range of the thickener is determined. Specifically, the steps include:

[0070] S31. Obtaining the thickener feed slurry concentration, thickener feed slurry density, thickener effective volume, and discharge volume, taking the thickener discharge slurry concentration as an unknown quantity, and calculating the relationship between the maximum effective settling time of the thickener and the thickener discharge slurry concentration;

[0071] The specific formula for calculating the relationship between the maximum effective settling time of the thickener and the slurry concentration at the thickener discharge is:

[0072] Among them, t max is the maximum effective settling time of the thickener, C1 is the feed slurry concentration of the thickener, ρ1 is the feed slurry density of the thickener, C is the discharge slurry concentration of the thickener, ρ2 is the discharge slurry density of the thickener, V is the effective volume of the thickener, and G is the discharge volume.

[0073] In formula (5), the thickener discharge slurry density ρ2 can be calculated based on the thickener feed slurry concentration C1, the thickener feed slurry density ρ1, the thickener discharge slurry concentration C and the density of water.

[0074] S32. Obtain the amount of flocculant added, take the thickener discharge slurry concentration as an unknown quantity, and calculate the relationship between the effective settling time of the thickener and the thickener discharge slurry concentration;

[0075] The formula for calculating the relationship between the effective settling time of the thickener and the concentration of the slurry discharged from the thickener is: C = At γ (6)

[0076] Where t is the effective settling time of the thickener, C is the discharge slurry concentration of the thickener, A and γ are both constants, and γ is determined by the amount of flocculant added, and A is determined by the slurry composition and particle size distribution.

[0077] S33. According to the maximum effective settling time of the thickener being greater than or equal to the effective settling time of the thickener, a third optimal discharge slurry concentration range of the thickener is obtained.

[0078] The maximum effective settling time of the thickener is greater than or equal to the effective settling time of the thickener, that is: t≤t max (7)

[0079] Combining equations (5), (6) and (7), we can obtain the range of thickener discharge slurry concentration C, which is the third optimal thickener discharge slurry concentration range.

[0080] S4. Determine the optimal discharge slurry concentration range of the thickener according to the first optimal discharge slurry concentration range, the second optimal discharge slurry concentration range, and the third optimal discharge slurry concentration range of the thickener.

[0081] In this embodiment, the optimal discharge slurry concentration range of the thickener is the union of the first optimal discharge slurry concentration range, the second optimal discharge slurry concentration range, and the third optimal discharge slurry concentration range. It should be understood that, while satisfying the first optimal discharge slurry concentration range, the second optimal discharge slurry concentration range, and the third optimal discharge slurry concentration range, a higher discharge slurry concentration may be selected as much as possible to improve mineral leaching efficiency.

[0082] After the discharge slurry concentration is determined, the slurry concentration at the thickener outlet is detected. When the concentration of the slurry discharged from the thickener outlet reaches the discharge slurry concentration, the discharge valve at the thickener outlet is opened. Subsequently, the discharge slurry concentration is kept stable by controlling the feed rate and discharge rate.

[0083] Referring to FIG. 5 , the present invention further provides a system for determining the optimal discharge slurry concentration of a thickener, comprising:

[0084] A viscosity control module 100 is used to set the maximum viscosity of the slurry and determine a first optimal discharge slurry concentration range of the thickener based on the maximum viscosity of the slurry;

[0085] A cleaning cycle control module 200 is used to set a minimum cleaning cycle for the discharge pipe and determine a second optimal discharge slurry concentration range for the thickener according to the minimum cleaning cycle for the discharge pipe;

[0086] a settling rate control module 300 for obtaining the thickener feed slurry concentration, the thickener feed slurry density, the thickener effective volume, the discharge amount, and the amount of flocculant added, and determining a third optimal discharge slurry concentration range for the thickener based on the thickener feed slurry concentration, the thickener feed slurry density, the thickener effective volume, the discharge amount, and the amount of flocculant added; and

[0087] The integrated control module 400 is used to determine the optimal discharge slurry concentration range of the thickener according to the first optimal discharge slurry concentration range, the second optimal discharge slurry concentration range and the third optimal discharge slurry concentration range of the thickener.

[0088] The present invention also provides a computer-readable storage medium, characterized in that the computer-readable storage medium stores one or more programs, and the one or more programs can be executed by one or more processors to implement the steps in the method for determining the optimal discharge slurry concentration of the thickener.

[0089] In summary, the technical solution provided by the present invention constrains the discharge slurry concentration of the thickener from three aspects through discharge slurry viscosity control, descaling cycle control and effective sedimentation time control, and finally obtains the optimal discharge slurry concentration range of the thickener. It can prevent the problems of unsuitable discharge slurry concentration leading to high slurry viscosity, heavy pumping load, too short discharge pipe descaling cycle, and too long sedimentation time leading to slurry overflow, and can bring maximum production efficiency and economic benefits.

[0090] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with this technical field within the technical scope disclosed by the present invention should be covered by the scope of protection of the present invention.

Claims

1. A method for determining the optimal discharge pulp concentration of a thickener, characterized in that, it includes: Setting the maximum viscosity of the pulp, and determining the first optimal discharge pulp concentration range of the thickener according to the maximum viscosity of the pulp; Setting the minimum descaling period of the discharge pipe, and determining the second optimal discharge pulp concentration range of the thickener according to the minimum descaling period of the discharge pipe; Obtaining the concentration of the feed pulp of the thickener, the density of the feed pulp of the thickener, the effective volume of the thickener, the discharge amount and the addition amount of the flocculant, and determining the third optimal discharge pulp concentration range of the thickener according to the concentration of the feed pulp of the thickener, the density of the feed pulp of the thickener, the effective volume of the thickener, the discharge amount and the addition amount of the flocculant; Determining the optimal discharge pulp concentration range of the thickener according to the first optimal discharge pulp concentration range, the second optimal discharge pulp concentration range and the third optimal discharge pulp concentration range of the thickener.

2. The method for determining the optimal discharge pulp concentration of a thickener according to claim 1, characterized in that, The specific method for determining the first optimal discharge pulp concentration range of the thickener according to the maximum viscosity of the pulp includes the following steps: Determining the relationship between the pulp viscosity and the discharge pulp concentration of the thickener; Determining the first optimal discharge pulp concentration range of the thickener according to the relationship between the pulp viscosity and the discharge pulp concentration of the thickener and the maximum viscosity of the pulp.

3. The method for determining the optimal discharge pulp concentration of a thickener according to claim 2, characterized in that, The relationship between the pulp viscosity and the pulp concentration of the thickener discharge is: η = a 1 C + a 2 C 2 + a 3 C 3 + a 4 Among them, C is the pulp concentration of the thickener discharge, a 1 ~a 4 is a constant.

4. The method for determining the optimal discharge pulp concentration of a thickener according to claim 1, characterized in that, Setting the minimum descaling period of the discharge pipe, and determining the second optimal discharge pulp concentration range of the thickener according to the minimum descaling period of the discharge pipe, specifically including: Determining the relationship between the descaling period of the discharge pipe and the discharge pulp concentration of the thickener; Determining the second optimal discharge pulp concentration range of the thickener according to the relationship between the descaling period of the discharge pipe and the discharge pulp concentration of the thickener and the minimum descaling period of the discharge pipe.

5. The method for determining the optimal discharge pulp concentration of a thickener according to claim 4, characterized in that, The relationship between the descaling cycle of the discharge pipe and the pulp concentration of the thickener discharge is: T = b 1 C 2 +b 2 C + b 3 Where T is the descaling period of the discharging pipe, C is the pulp concentration of the thickener discharge, and b 1 ~b 3 is a constant.

6. The method for determining the optimal discharge pulp concentration of a thickener according to claim 1, characterized in that, Obtaining the concentration of the feed pulp of the thickener, the density of the feed pulp of the thickener, the effective volume of the thickener, the discharge amount and the addition amount of the flocculant, and determining the third optimal discharge pulp concentration range of the thickener according to the concentration of the feed pulp of the thickener, the density of the feed pulp of the thickener, the effective volume of the thickener, the discharge amount and the addition amount of the flocculant, specifically including the following steps: Obtaining the concentration of the feed pulp of the thickener, the density of the feed pulp of the thickener, the effective volume of the thickener and the discharge amount, taking the discharge pulp concentration of the thickener as an unknown quantity, and calculating the relationship between the maximum effective sedimentation time of the thickener and the discharge pulp concentration of the thickener; Obtaining the addition amount of the flocculant, taking the discharge pulp concentration of the thickener as an unknown quantity, and calculating the relationship between the effective sedimentation time of the thickener and the discharge pulp concentration of the thickener; Obtaining the third optimal discharge pulp concentration range of the thickener according to the fact that the maximum effective sedimentation time of the thickener is greater than or equal to the effective sedimentation time of the thickener.

7. The method for determining the optimal discharge pulp concentration of a thickener according to claim 6, characterized in that, The specific formula for calculating the relationship between the maximum effective settling time of the thickener and the pulp concentration of the thickener discharge is as follows: Among them, t max is the maximum effective sedimentation time of the thickener, C 1 is the concentration of the feed pulp of the thickener, ρ 1 is the density of the feed pulp of the thickener, C is the concentration of the discharge pulp of the thickener, ρ 2 is the density of the discharge pulp of the thickener, V is the effective volume of the thickener, and G is the discharge amount.

8. The method for determining the optimal discharge pulp concentration of a thickener according to claim 6, characterized in that, The formula for calculating the relationship between the effective sedimentation time of the thickener and the pulp concentration of the thickener discharge is: C = At γ wherein t is the effective sedimentation time of the thickener, C is the discharge pulp concentration of the thickener, A and γ are both constants, and γ is determined by the dosage of the flocculant.

9. A system for determining the optimal discharge pulp concentration of a thickener, characterized in that, comprising: a viscosity control module for setting the maximum viscosity of the pulp and determining the first optimal discharge pulp concentration range of the thickener according to the maximum viscosity of the pulp; a descaling cycle control module for setting the minimum descaling cycle of the discharge pipe and determining the second optimal discharge pulp concentration range of the thickener according to the minimum descaling cycle of the discharge pipe; a sedimentation rate control module for obtaining the feed pulp concentration of the thickener, the feed pulp density of the thickener, the effective volume of the thickener, the discharge amount and the dosage of the flocculant, and determining the third optimal discharge pulp concentration range of the thickener according to the feed pulp concentration of the thickener, the feed pulp density of the thickener, the effective volume of the thickener, the discharge amount and the dosage of the flocculant; and, a comprehensive control module for determining the optimal discharge pulp concentration range of the thickener according to the first optimal discharge pulp concentration range, the second optimal discharge pulp concentration range and the third optimal discharge pulp concentration range of the thickener range.

10. A computer-readable storage medium, characterized in that, the computer-readable storage medium stores one or more programs, and the one or more programs can be executed by one or more processors to implement the steps in the method for determining the optimal discharge pulp concentration of a thickener according to any one of claims 1-8.

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