Method, device and equipment for determining particle size of granular tailings used for mine filling

Abstract

The present invention discloses a method, device and equipment for determining the particle size of granular tailings for mine filling, which relates to the technical field of mine filling and can solve the technical problem that the current utilization of fine-grained original tailings for filling is small. It includes: granulating the original tailings to obtain granular tailings, configuring a filling slurry according to the granular tailings and the original tailings, and using the filling slurry for filling; determining the dynamic mechanical properties of the filling slurry, and determining the viscosity coefficient between the original tailings and the surrounding net slurry of the granular tailings; determining the particle size of the granular tailings based on the dynamic mechanical properties and the viscosity coefficient, and granulating according to the particle size of the granular tailings.

Description

Technical Field

[0001] The present invention relates to the technical field of mine filling, and in particular to a method, a device and equipment for determining the particle size of granular tailings used for mine filling. Background Art

[0002] The original tailings used for mine filling have gradually become ultra-fine and ultra-fine. There are two main reasons: first, in order to improve resource utilization and the degree of dissociation of useful minerals, ultra-fine grinding technology needs to be applied before ore sorting; second, in order to improve the disposal rate of all tailings, enterprises classify the tailings and sell the coarse tailings as construction sand. The remaining fine-grained original tailings are used for filling or discharged into tailings ponds.

[0003] According to the current filling technology and process of original tailings, the processes of thickening, transportation, and dehydration in the mining area are limited, and the prepared filling slurry concentration is low. The original tailings itself has a large viscosity. If the filling slurry concentration is increased, it will be unfavorable for pipeline transportation. Therefore, the filling utilization of original tailings is small, and it is difficult to provide important technical support for the reduction of tailings. In summary, the existing tailings disposal methods have many problems in terms of technical economy and engineering. Summary of the invention

[0004] In view of this, the present invention provides a method, device and equipment for determining the particle size of granular tailings for mine filling, which can solve the current technical problem that the utilization rate of fine-grained original tailings for mine filling is relatively small.

[0005] According to a first aspect of the present invention, there is provided a method for determining the particle size of granular tailings for mine filling, the method comprising:

[0006] Granulating the original tailings to obtain granular tailings, preparing a filling slurry based on the granular tailings and the original tailings, and performing filling using the filling slurry;

[0007] Determining the dynamic mechanical properties of the filling slurry, and determining the viscosity coefficient between the original tailings and the surrounding net slurry of the granular tailings;

[0008] The particle size of the granular tailings is determined based on the dynamic mechanical properties and the viscosity coefficient, so that granulation is performed according to the particle size of the granular tailings.

[0009] Preferably, determining the dynamic mechanical properties of the filling slurry includes:

[0010] Determine a first relationship between the granular tailings in the filling slurry during a dynamic process, which is constructed by the self-gravity, the buoyancy of the filling slurry, the viscous resistance of the surrounding net slurry, and the movement speed;

[0011] Determine a second relationship constructed by the self-gravity, the buoyancy, the density of the surrounding net slurry, the density of the granular tailings, and the particle size of the granular tailings;

[0012] Determining a third relationship constructed by the viscous resistance, the particle size of the granular tailings, the suspension velocity, and the density of the surrounding net slurry;

[0013] Determine the conditions for the granular tailings to achieve constant-speed sedimentation, and construct a fourth relationship between the suspension velocity and the particle size of the granular tailings, the density of the surrounding net slurry, and the density of the granular tailings based on the conditions, the first relationship, the second relationship, and the third relationship, and use the fourth relationship as the dynamic mechanical property of the filling slurry.

[0014] Preferably, the determining the particle size of the granular tailings based on the dynamic mechanical properties and the viscosity coefficient comprises:

[0015] Determining a fifth relationship between the fluid dynamics of the granular tailings and the Reynolds number, the particle size of the granular tailings, the density of the granular tailings, and the suspension velocity;

[0016] When the granular tailings reaches free suspension, constructing a sixth relationship between the suspension velocity and the particle size of the granular tailings, the density of the surrounding net slurry, the viscosity coefficient, and the density of the granular tailings based on the fifth relationship and the second relationship;

[0017] Based on the fourth relationship and the sixth relationship, constructing a seventh relationship between the particle size of the granular tailings and the viscosity coefficient, the density of the surrounding net slurry, and the density of the granular tailings;

[0018] The particle size of the granular tailings is determined according to the seventh relationship.

[0019] Preferably, the determination of the first relationship constructed by the self-gravity, the buoyancy of the filling slurry, the viscous resistance of the surrounding net slurry and the movement speed of the granular tailings in the filling slurry in the dynamic process includes:

[0020] The first relationship is constructed as: ;

[0021] in, is the self-gravity, is the buoyancy of the filling slurry, is the viscous resistance of the surrounding net slurry, is the mass of the granular tailings, For the movement speed, is the acceleration of the granular tailings movement;

[0022] The determining of the second relationship constructed by the self-gravity, the buoyancy, the density of the surrounding net slurry, the density of the granular tailings, and the particle size of the granular tailings includes:

[0023] The second relationship is constructed as: ;

[0024] in, is the self-gravity, is the buoyancy, is the acceleration due to gravity, is the density of the surrounding net slurry, is the density of the granular tailings, is the particle size of the granular tailings;

[0025] The determining of the third relationship constructed by the viscous resistance, the particle size of the granular tailings, the suspension velocity, and the density of the surrounding net slurry includes:

[0026] The third relationship is constructed as: ;

[0027] in, is the viscous resistance, is the particle size of the granular tailings, is the suspension speed, is the density of the surrounding net slurry.

[0028] Preferably, the conditions for determining that the granular tailings reaches constant-speed settling include:

[0029] Determining the acceleration of the movement of the granular tailings according to the movement speed, and determining that the movement speed is equal to the suspension speed and the acceleration is zero as a condition for the granular tailings to achieve constant speed sedimentation;

[0030] The fourth relationship between the suspension velocity and the particle size of the granular tailings, the density of the surrounding net slurry, and the density of the granular tailings is constructed based on the condition, the first relationship, the second relationship, and the third relationship, and the fourth relationship is used as the dynamic mechanical property of the filling slurry, including:

[0031] The fourth relationship is constructed as: ;

[0032] in, is the suspension speed, is the particle size of the granular tailings, is the acceleration due to gravity, is the density of the surrounding net slurry, is the density of the granular tailings.

[0033] Preferably, the determining of the fifth relationship between the fluid dynamics of the granular tailings and the Reynolds number, the particle size of the granular tailings, the density of the granular tailings and the suspension velocity comprises:

[0034] The fifth relationship is constructed as: ;

[0035] in, , is the Reynolds number, is the particle size of the granular tailings, is the density of the granular tailings, is the suspension speed;

[0036] When the granular tailings reaches free suspension, based on the fifth relationship and the second relationship, a sixth relationship between the suspension velocity and the particle size of the granular tailings, the density of the surrounding net slurry, the viscosity coefficient and the density of the granular tailings is constructed, including:

[0037] The second relationship is: ;

[0038] The Reynolds number is: ;

[0039] The sixth relationship is constructed as: ;

[0040] in, is the self-gravity, is the buoyancy, is the suspension speed, is the particle size of the granular tailings, is the acceleration due to gravity, is the density of the surrounding net slurry, is the density of the granular tailings, is the viscosity coefficient.

[0041] Preferably, the seventh relationship between the particle size of the granular tailings and the viscosity coefficient, the density of the surrounding net slurry, and the density of the granular tailings is constructed based on the fourth relationship and the sixth relationship, including:

[0042] The fourth relationship is: ;

[0043] The seventh relationship is constructed as: ;

[0044] in, is the particle size of the granular tailings, is the viscosity coefficient, is the density of the surrounding net slurry, is the density of the granular tailings, is the acceleration due to gravity.

[0045] According to a second aspect of the present invention, there is provided a device for determining the particle size of granular tailings for mine filling, the device comprising:

[0046] A configuration module is used to granulate the original tailings to obtain granular tailings, configure a filling slurry according to the granular tailings and the original tailings, and use the filling slurry for filling;

[0047] A first determination module is used to determine the dynamic mechanical properties of the filling slurry and determine the viscosity coefficient between the original tailings and the surrounding net slurry of the granular tailings;

[0048] The second determination module is used to determine the particle size of the granular tailings based on the dynamic mechanical characteristics and the viscosity coefficient, so as to perform granulation according to the particle size of the granular tailings.

[0049] According to a third aspect of the present application, a storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the method for determining the particle size of granular tailings used for mine filling is implemented.

[0050] According to the fourth aspect of the present application, a computer device is provided, including a storage medium, a processor, and a computer program stored on the storage medium and executable on the processor, wherein when the processor executes the program, the method for determining the particle size of granular tailings used for mine filling is implemented.

[0051] Through the above technical scheme, the present invention provides a method, device and equipment for determining the particle size of granular tailings for mine filling. First, the original tailings are granulated to obtain granular tailings, and a filling slurry is configured according to the granular tailings and the original tailings, so as to use the filling slurry for filling, then, the dynamic mechanical properties of the filling slurry are determined, and the viscosity coefficient between the original tailings and the surrounding net slurry of the granular tailings is determined, and finally, the particle size of the granular tailings is determined based on the dynamic mechanical properties and the viscosity coefficient, so as to perform granulation according to the particle size of the granular tailings. The reason why the filling utilization amount of fine-grained original tailings is small is that it is ultra-fine. Therefore, through the technical solution of the present invention, the fine-grained original tailings are granulated on a small scale to obtain granular tailings. In order to increase the concentration of the filling slurry prepared from the granular tailings and make the filling slurry convenient for pipeline transportation, it is necessary to reasonably determine the particle size of the granular tailings. Therefore, through the technical solution of the present invention, the dynamic mechanical properties of the filling slurry prepared by the granular tailings and the original tailings are analyzed, and the viscosity coefficient between the original tailings and the surrounding net slurry of the granular tailings in the filling slurry system is introduced, and then the reasonable particle size of the granular tailings in the pipeline dynamic system is determined, and the original tailings are prepared into granular tailings according to such particle size. Further, the filling slurry configured with such granular tailings not only increases the concentration, thereby increasing the filling utilization amount of the original tailings, but also is convenient for pipeline transportation.

[0052] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the local application. In the drawings:

[0054] Figure 1 A schematic flow chart of a method for determining the particle size of granular tailings for mine filling provided by an embodiment of the present invention is shown;

[0055] Figure 2 A schematic flow chart of another method for determining the particle size of granular tailings for mine filling provided by an embodiment of the present invention is shown;

[0056] Figure 3 A schematic structural diagram of a device for determining the particle size of granular tailings for mine filling provided by an embodiment of the present invention is shown;

[0057] Figure 4A schematic structural diagram of another device for determining the particle size of granular tailings for mine filling provided by an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0058] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0059] This embodiment provides a method for determining the particle size of granular tailings used for mine filling, such as Figure 1 As shown, the method includes:

[0060] 101. Granulate the original tailings to obtain granular tailings, prepare a filling slurry based on the granular tailings and the original tailings, and use the filling slurry for filling.

[0061] For this embodiment, as an implementation method, granulating the original tailings to obtain granular tailings may specifically include: mixing the original tailings, a binder and water, granulating to obtain granular tailings. Configuring a filling slurry based on the granular tailings and the original tailings may specifically include: mixing the granular tailings, the original tailings, a cementitious material and water to obtain a filling slurry. The filling slurry is transported to the filling position through a pipeline for filling.

[0062] 102. Determine the dynamic mechanical properties of the filling slurry, and determine the viscosity coefficient between the original tailings and the surrounding net slurry of the granular tailings.

[0063] It should be noted that the viscosity coefficient refers to a value between 1 and 2, where 1 refers to the original tailings and 2 refers to the net slurry surrounding the granular tailings. The net slurry surrounding the granular tailings refers to the slurry composed of original tailings, cementitious materials and water except the granular tailings.

[0064] 103. Determine the particle size of the granular tailings based on the dynamic mechanical properties and the viscosity coefficient, and perform granulation according to the particle size of the granular tailings.

[0065] It should be noted that, for step 101 of the embodiment, when the original tailings are granulated to obtain granular tailings, the particle size value of the granular tailings is not determined. Steps 101-103 of the embodiment are the process of determining the parameter expression of the particle size of the granular tailings. In actual application, the parameters required by the parameter expression are substituted to obtain a reasonable particle size value of the granular tailings when the original tailings are granulated.

[0066] The present invention provides a method, device and equipment for determining the particle size of granular tailings for mine filling. First, the original tailings are granulated to obtain granular tailings, and a filling slurry is configured according to the granular tailings and the original tailings, so as to use the filling slurry for filling, then, the dynamic mechanical properties of the filling slurry are determined, and the viscosity coefficient between the original tailings and the surrounding net slurry of the granular tailings is determined, and finally, the particle size of the granular tailings is determined based on the dynamic mechanical properties and the viscosity coefficient, so as to perform granulation according to the particle size of the granular tailings. The reason why the filling utilization amount of fine-grained original tailings is small is that it is ultra-fine. Therefore, through the technical solution of the present invention, the fine-grained original tailings are granulated on a small scale to obtain granular tailings. In order to increase the concentration of the filling slurry prepared from the granular tailings and make the filling slurry convenient for pipeline transportation, it is necessary to reasonably determine the particle size of the granular tailings. Therefore, through the technical solution of the present invention, the dynamic mechanical properties of the filling slurry prepared by the granular tailings and the original tailings are analyzed, and the viscosity coefficient between the original tailings and the surrounding net slurry of the granular tailings in the filling slurry system is introduced, and then the reasonable particle size of the granular tailings in the pipeline dynamic system is determined, and the original tailings are prepared into granular tailings according to such particle size. Further, the filling slurry configured with such granular tailings not only increases the concentration, thereby increasing the filling utilization amount of the original tailings, but also is convenient for pipeline transportation.

[0067] Further, as a refinement and expansion of the specific implementation of the above embodiment, in order to fully illustrate the specific implementation process of this embodiment, another method for determining the particle size of granular tailings used for mine filling is provided, such as Figure 2 As shown, the method includes:

[0068] 201. Granulate the original tailings to obtain granular tailings, prepare a filling slurry based on the granular tailings and the original tailings, and use the filling slurry for filling.

[0069] This embodiment is the same as step 101 of the embodiment, and will not be described again here.

[0070] 202. Determine a first relationship between the granular tailings in the filling slurry during a dynamic process, which is constructed by the self-gravity, the buoyancy of the filling slurry, the viscous resistance of the surrounding net slurry, and the movement speed.

[0071] The surrounding net slurry refers to the original tailings, cementitious materials and water except the granular tailings.

[0072] For this embodiment, the first relationship is constructed as follows: ;

[0073] in, is the self-gravity, is the buoyancy of the filling slurry, is the viscous resistance of the surrounding net slurry, is the mass of the granular tailings, For the movement speed, is the acceleration of the granular tailings movement.

[0074] 203. Determine a second relationship constructed by the own gravity, the buoyancy, the density of the surrounding net slurry, the density of the granular tailings, and the particle size of the granular tailings.

[0075] For this embodiment, the second relationship is constructed as: ;

[0076] in, is the self-gravity, is the buoyancy, is the acceleration due to gravity, is the density of the surrounding net slurry, is the density of the granular tailings, is the particle size of the granular tailings.

[0077] 204. Determine a third relationship constructed by the viscous resistance, the particle size of the granular tailings, the suspension velocity, and the density of the surrounding net slurry.

[0078] For this embodiment, the third relationship is constructed as: ;

[0079] in, is the viscous resistance, is the particle size of the granular tailings, is the suspension speed, is the density of the surrounding net slurry.

[0080] 205. Determine the conditions for the granular tailings to achieve constant-speed sedimentation, and construct a fourth relationship between the suspension velocity and the particle size of the granular tailings, the density of the surrounding net slurry, and the density of the granular tailings based on the conditions, the first relationship, the second relationship, and the third relationship, and use the fourth relationship as the dynamic mechanical property of the filling slurry.

[0081] Determining the condition for the granular tailings to reach a constant speed of sedimentation includes: determining the acceleration of the movement of the granular tailings according to the movement speed, making the movement speed equal to the suspension speed, that is, = , and the acceleration is zero, that is The conditions for the granular tailings to achieve constant-speed settling are determined.

[0082] On the basis of steps 202-204 of the embodiment, the fourth relationship between the suspension velocity and the particle size of the granular tailings, the density of the surrounding net slurry and the density of the granular tailings is constructed based on the condition, the first relationship, the second relationship and the third relationship, and the fourth relationship is used as the dynamic mechanical property of the filling slurry, including: constructing the fourth relationship as: ;

[0083] in, is the suspension speed, is the particle size of the granular tailings, is the acceleration due to gravity, is the density of the surrounding net slurry, is the density of the granular tailings.

[0084] 206. Determine the viscosity coefficient between the original tailings and the surrounding net slurry of the granular tailings.

[0085] It should be noted that the viscosity coefficient refers to a value between 1 and 2, where 1 refers to the original tailings and 2 refers to the net slurry around the granular tailings.

[0086] 207. Determine a fifth relationship between the fluid dynamics of the granular tailings and the Reynolds number, the particle size of the granular tailings, the density of the granular tailings, and the suspension velocity.

[0087] The fifth relationship is constructed as: ;

[0088] in, ,

[0089] is the Reynolds number, is the particle size of the granular tailings, is the density of the granular tailings, is the suspension speed.

[0090] 208. When the granular tailings reaches free suspension, based on the fifth relationship and the second relationship, a sixth relationship between the suspension velocity and the particle size of the granular tailings, the density of the surrounding net slurry, the viscosity coefficient and the density of the granular tailings is constructed.

[0091] When the granular tailings reach free suspension, the fluid dynamics =

[0092] The second relationship is: ;

[0093] The Reynolds number is: ;

[0094] Based on steps 202 and 207 of the embodiment, the sixth relationship is constructed as follows: ;

[0095] in, is the self-gravity, is the buoyancy, is the suspension speed, is the particle size of the granular tailings, is the acceleration due to gravity, is the density of the surrounding net slurry, is the density of the granular tailings, is the viscosity coefficient.

[0096] 209. Based on the fourth relationship and the sixth relationship, a seventh relationship between the particle size of the granular tailings and the viscosity coefficient, the density of the surrounding net slurry, and the density of the granular tailings is constructed, and the particle size of the granular tailings is determined according to the seventh relationship, so as to perform granulation according to the particle size of the granular tailings.

[0097] For this embodiment, the fourth relationship is: ;

[0098] Based on steps 205 and 208 of the embodiment, the seventh relationship is constructed as follows: ;

[0099] in, is the particle size of the granular tailings, is the viscosity coefficient, is the density of the surrounding net slurry, is the density of the granular tailings, is the acceleration due to gravity.

[0100] Among them, the seventh relationship is the parameter expression of the particle size of granular tailings. In specific applications, the required parameter values ​​in the parameter expression are substituted to obtain the specific particle size value of granular tailings. Specifically, the parameter in the parameter expression is the viscosity coefficient , the density of the surrounding net slurry , density of granular tailings The quality of the filling slurry ratio is related to the mass concentration, cement-sand ratio, and the proportion of granular tailings and original tailings. This time, considering that the amount of cement used per cubic meter in the mine remains unchanged, and the particle size grading requirements of the solid components in the filling slurry are met, different test groups are formed based on the two factors of the filling slurry mass concentration and the original tailings content to determine the particle size of the granular tailings used for mine filling. Considering that the proportion of original tailings in non-cementitious materials is 20%, 30%, and 40%, respectively, and the mass concentration of the filling slurry is 78%, 79%, 80%, 81%, and 82%. Therefore, it is necessary to measure the viscosity coefficient through experimental means. and the density of the surrounding net slurry , it was measured that under the 15 groups of tests, the viscosity coefficient was 0.8264 Pa·s, and the density of the surrounding net slurry was 2.09t / m3. Due to the existence of porosity after granulation, the density of granulated tailings is less than that of original tailings. Generally, the coefficient of 0.8 of the original tailings is taken. The density of the original tailings is known to be 2.75 t / m3, and the density of the granular tailings can be obtained. Substituting it into the seventh relationship, the particle size of the granular tailings is 3.6mm.

[0101] The present invention provides a method, device and equipment for determining the particle size of granular tailings for mine filling. First, the original tailings are granulated to obtain granular tailings, and a filling slurry is configured according to the granular tailings and the original tailings, so as to use the filling slurry for filling, then, the dynamic mechanical properties of the filling slurry are determined, and the viscosity coefficient between the original tailings and the surrounding net slurry of the granular tailings is determined, and finally, the particle size of the granular tailings is determined based on the dynamic mechanical properties and the viscosity coefficient, so as to perform granulation according to the particle size of the granular tailings. The reason why the filling utilization amount of fine-grained original tailings is small is that it is ultra-fine. Therefore, through the technical solution of the present invention, the fine-grained original tailings are granulated on a small scale to obtain granular tailings. In order to increase the concentration of the filling slurry prepared from the granular tailings and make the filling slurry convenient for pipeline transportation, it is necessary to reasonably determine the particle size of the granular tailings. Therefore, through the technical solution of the present invention, the dynamic mechanical properties of the filling slurry prepared by the granular tailings and the original tailings are analyzed, and the viscosity coefficient between the original tailings and the surrounding net slurry of the granular tailings in the filling slurry system is introduced, and then the reasonable particle size of the granular tailings in the pipeline dynamic system is determined, and the original tailings are prepared into granular tailings according to such particle size. Further, the filling slurry configured with such granular tailings not only increases the concentration, thereby increasing the filling utilization amount of the original tailings, but also is convenient for pipeline transportation.

[0102] Further, as Figure 1 and Figure 2 The specific implementation of the method shown in the figure, the embodiment of the present invention provides a device for determining the particle size of granular tailings used for mine filling, such as Figure 3As shown, the device includes: a configuration module 31, a first determination module 32, and a second determination module 33;

[0103] A configuration module 31 is used to granulate the original tailings to obtain granular tailings, configure a filling slurry according to the granular tailings and the original tailings, and use the filling slurry for filling;

[0104] A first determination module 32 is used to determine the dynamic mechanical properties of the filling slurry and determine the viscosity coefficient between the original tailings and the surrounding net slurry of the granular tailings;

[0105] The second determination module 33 is used to determine the particle size of the granular tailings based on the dynamic mechanical characteristics and the viscosity coefficient, so as to perform granulation according to the particle size of the granular tailings.

[0106] Accordingly, in order to determine the dynamic mechanical properties of the filling slurry, such as Figure 4 As shown, the first determination module 32 specifically includes: a first determination unit 321, a second determination unit 322, and a third determination unit 323;

[0107] The first determination unit 321 may be used to determine a first relationship constructed by the self-gravity, the buoyancy of the filling slurry, the viscous resistance of the surrounding net slurry, and the movement speed of the granular tailings in the filling slurry during a dynamic process;

[0108] The second determining unit 322 may be used to determine a second relationship constructed by the self-gravity, the buoyancy, the density of the surrounding net slurry, the density of the granular tailings, and the particle size of the granular tailings; and determine a third relationship constructed by the viscous resistance, the particle size of the granular tailings, the suspension velocity, and the density of the surrounding net slurry;

[0109] The third determination unit 323 can be used to determine the conditions for the granular tailings to achieve constant-speed sedimentation, and based on the conditions, the first relationship, the second relationship, and the third relationship, construct a fourth relationship between the suspension velocity and the particle size of the granular tailings, the density of the surrounding net slurry, and the density of the granular tailings, and use the fourth relationship as the dynamic mechanical property of the filling slurry.

[0110] Correspondingly, in order to determine the particle size of the granular tailings based on the dynamic mechanical characteristics and the viscosity coefficient, the second determination module 33 can be specifically used to determine the fifth relationship between the fluid dynamics of the granular tailings and the Reynolds number, the particle size of the granular tailings, the density of the granular tailings and the suspension velocity; when the granular tailings reaches free suspension, based on the fifth relationship and the second relationship, construct a sixth relationship between the suspension velocity and the particle size of the granular tailings, the density of the surrounding net slurry, the viscosity coefficient and the density of the granular tailings; based on the fourth relationship and the sixth relationship, construct a seventh relationship between the particle size of the granular tailings and the viscosity coefficient, the density of the surrounding net slurry and the density of the granular tailings; and determine the particle size of the granular tailings according to the seventh relationship.

[0111] Accordingly, in order to determine the first relationship constructed by the self-gravity, the buoyancy of the filling slurry, the viscous resistance of the surrounding net slurry and the movement speed of the granular tailings in the filling slurry in the dynamic process, the first determining unit 321 can be specifically used to construct the first relationship as follows: ;in, is the self-gravity, is the buoyancy of the filling slurry, is the viscous resistance of the surrounding net slurry, is the mass of the granular tailings, For the movement speed, is the acceleration of the granular tailings movement.

[0112] Accordingly, in order to determine the second relationship constructed by the self-gravity, the buoyancy, the density of the surrounding net slurry, the density of the granular tailings and the particle size of the granular tailings, the second determination unit 322 can be specifically used to construct the second relationship as follows: ;in, is the self-gravity, is the buoyancy, is the acceleration due to gravity, is the density of the surrounding net slurry, is the density of the granular tailings, is the particle size of the granular tailings.

[0113] Accordingly, in order to determine the third relationship constructed by the viscous resistance, the particle size of the granular tailings, the suspension velocity, and the density of the surrounding net slurry, the second determining unit 322 can be specifically used to construct the third relationship as follows: ;in, is the viscous resistance, is the particle size of the granular tailings, is the suspension speed, is the density of the surrounding net slurry.

[0114] Accordingly, in order to determine the condition for the granular tailings to settle at a constant rate, the third determination unit 323 can be specifically used to determine the acceleration of the movement of the granular tailings according to the movement speed, and the movement speed is equal to the suspension speed, and the acceleration is zero as the condition for the granular tailings to settle at a constant rate.

[0115] Accordingly, in order to construct a fourth relationship between the suspension velocity and the particle size of the granular tailings, the density of the surrounding net slurry, and the density of the granular tailings based on the condition, the first relationship, the second relationship, and the third relationship, and to use the fourth relationship as the dynamic mechanical property of the filling slurry, the third determining unit 323 can be specifically used to construct the fourth relationship as follows: ;in, is the suspension speed, is the particle size of the granular tailings, is the acceleration due to gravity, is the density of the surrounding net slurry, is the density of the granular tailings.

[0116] Accordingly, in order to determine the fifth relationship between the fluid dynamics of the granular tailings and the Reynolds number, the particle size of the granular tailings, the density of the granular tailings and the suspension velocity, the second determination module 33 can be specifically used to construct the fifth relationship as follows: ;

[0117] in, , is the Reynolds number, is the particle size of the granular tailings, is the density of the granular tailings, is the suspension speed.

[0118] Accordingly, in order to construct a sixth relationship between the suspension velocity and the particle size of the granular tailings, the density of the surrounding net slurry, the viscosity coefficient, and the density of the granular tailings based on the fifth relationship and the second relationship when the granular tailings reaches free suspension, the second determination module 33 can be specifically used for the second relationship as follows: ;

[0119] The Reynolds number is: ; Construct the sixth relationship as: ;in, is the self-gravity, is the buoyancy, is the suspension speed, is the particle size of the granular tailings, is the acceleration due to gravity, is the density of the surrounding net slurry, is the density of the granular tailings, is the viscosity coefficient.

[0120] Accordingly, in order to construct a seventh relationship between the particle size of the granular tailings and the viscosity coefficient, the density of the surrounding net slurry, and the density of the granular tailings based on the fourth relationship and the sixth relationship, the second determination module 33 can be specifically used for the fourth relationship as follows: ;

[0121] The seventh relationship is constructed as: ;in, is the particle size of the granular tailings, is the viscosity coefficient, is the density of the surrounding net slurry, is the density of the granular tailings, is the acceleration due to gravity.

[0122] It should be noted that for other corresponding descriptions of the functional units involved in the device for determining the particle size of granular tailings for mine filling provided in this embodiment, reference can be made to Figure 1 to Figure 2 The corresponding description will not be repeated here.

[0123] Based on the above Figure 1 to Figure 2 The method shown in the embodiment, accordingly, also provides a storage medium, which can be volatile or non-volatile, and stores a computer program, which is executed by a processor to implement the above-mentioned Figure 1 to Figure 2 The method shown is for determining the particle size of granular tailings used for mine filling.

[0124] Based on this understanding, the technical solution of the present invention can be embodied in the form of a software product, which can be stored in a storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.), and includes a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods of various implementation scenarios of the present invention.

[0125] Based on the above Figure 1 to Figure 2 The method shown and Figure 3 , Figure 4 In order to achieve the above-mentioned purpose, the present embodiment further provides a computer device, which includes a storage medium and a processor; the storage medium is used to store a computer program; the processor is used to execute the computer program to achieve the above-mentioned Figure 1 to Figure 2 The method shown is for determining the particle size of granular tailings used for mine filling.

[0126] Optionally, the computer device may also include a user interface, a network interface, a camera, a radio frequency (RF) circuit, a sensor, an audio circuit, a WI-FI module, etc. The user interface may include a display, an input unit such as a keyboard, etc., and the optional user interface may also include a USB interface, a card reader interface, etc. The network interface may optionally include a standard wired interface, a wireless interface (such as a WI-FI interface), etc.

[0127] Those skilled in the art will appreciate that the computer device structure provided in this embodiment does not constitute a limitation on the physical device, and may include more or fewer components, or a combination of certain components, or different component arrangements.

[0128] The storage medium may also include an operating network communication module. The operating is a program that manages the hardware and software resources of the above-mentioned computer device, supporting the operation of the information processing program and other software and / or programs. The network communication module is used to communicate between the components inside the storage medium, and to communicate with other hardware and software in the information processing entity device.

[0129] Through the description of the above implementation modes, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus a necessary general hardware platform, or by hardware.

[0130] The present invention provides a method, device and equipment for determining the particle size of granular tailings for mine filling. First, the original tailings are granulated to obtain granular tailings, and a filling slurry is configured according to the granular tailings and the original tailings, so as to use the filling slurry for filling, then, the dynamic mechanical properties of the filling slurry are determined, and the viscosity coefficient between the original tailings and the surrounding net slurry of the granular tailings is determined, and finally, the particle size of the granular tailings is determined based on the dynamic mechanical properties and the viscosity coefficient, so as to perform granulation according to the particle size of the granular tailings. The reason why the filling utilization amount of fine-grained original tailings is small is that it is ultra-fine. Therefore, through the technical solution of the present invention, the fine-grained original tailings are granulated on a small scale to obtain granular tailings. In order to increase the concentration of the filling slurry prepared from the granular tailings and make the filling slurry convenient for pipeline transportation, it is necessary to reasonably determine the particle size of the granular tailings. Therefore, through the technical solution of the present invention, the dynamic mechanical properties of the filling slurry prepared by the granular tailings and the original tailings are analyzed, and the viscosity coefficient between the original tailings and the surrounding net slurry of the granular tailings in the filling slurry system is introduced, and then the reasonable particle size of the granular tailings in the pipeline dynamic system is determined, and the original tailings are prepared into granular tailings according to such particle size. Further, the filling slurry configured with such granular tailings not only increases the concentration, thereby increasing the filling utilization amount of the original tailings, but also is convenient for pipeline transportation.

[0131] Those skilled in the art will appreciate that the accompanying drawings are only schematic diagrams of a preferred implementation scenario, and the modules or processes in the accompanying drawings are not necessarily necessary for implementing the present invention. Those skilled in the art will appreciate that the modules in the devices in the implementation scenario can be distributed in the devices of the implementation scenario according to the description of the implementation scenario, or can be changed accordingly and located in one or more devices different from the present implementation scenario. The modules of the above-mentioned implementation scenario can be combined into one module, or can be further split into multiple submodules.

[0132] The above serial numbers of the present invention are only for description and do not represent the advantages and disadvantages of the implementation scenarios. The above disclosure is only a few specific implementation scenarios of the present invention, but the present invention is not limited thereto, and any changes that can be thought of by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A method for determining the particle size of granular tailings used for mine filling, characterized in that: The method comprises: Granulating the original tailings to obtain granular tailings, preparing a filling slurry based on the granular tailings and the original tailings, and performing filling using the filling slurry; Determine a second relationship constructed by its own gravity, the buoyancy of the filling slurry, the density of the surrounding net slurry of the granular tailings, the density of the granular tailings, and the particle size of the granular tailings; Determining the dynamic mechanical properties of the filling slurry according to the second relationship, and determining the viscosity coefficient between the original tailings and the surrounding clean slurry; Determining the particle size of the granular tailings based on the dynamic mechanical properties and the viscosity coefficient, so as to granulate the granular tailings according to the particle size; The determining the particle size of the granular tailings based on the dynamic mechanical properties and the viscosity coefficient includes: Determining a fifth relationship between the fluid dynamics of the granular tailings and the Reynolds number, the particle size of the granular tailings, the density of the granular tailings, and the suspension velocity; When the granular tailings reaches free suspension, constructing a sixth relationship between the suspension velocity and the particle size of the granular tailings, the density of the surrounding net slurry, the viscosity coefficient, and the density of the granular tailings based on the fifth relationship and the second relationship; Based on the dynamic mechanical property and the sixth relationship, constructing a seventh relationship between the particle size of the granular tailings and the viscosity coefficient, the density of the surrounding net slurry, and the density of the granular tailings; The particle size of the granular tailings is determined according to the seventh relationship.

2. The method according to claim 1, characterized in that Determining the dynamic mechanical properties of the filling slurry according to the second relationship includes: Determine a first relationship between the granular tailings in the filling slurry during a dynamic process, which is constructed by the self-gravity, the buoyancy, the viscous resistance of the surrounding net slurry, and the movement speed; Determining a third relationship constructed by the viscous resistance, the particle size of the granular tailings, the suspension velocity, and the density of the surrounding net slurry; Determine the conditions for the granular tailings to achieve constant-speed sedimentation, and construct a fourth relationship between the suspension velocity and the particle size of the granular tailings, the density of the surrounding net slurry, and the density of the granular tailings based on the conditions, the first relationship, the second relationship, and the third relationship, and use the fourth relationship as the dynamic mechanical property of the filling slurry.

3. The method according to claim 2, characterized in that The determining of the first relationship constructed by the own gravity, the buoyancy, the viscous resistance of the surrounding net slurry and the movement speed of the granular tailings in the filling slurry during the dynamic process includes: The first relationship is constructed as: ; in, is the self-gravity, is the buoyancy, is the viscous resistance of the surrounding net slurry, is the mass of the granular tailings, For the movement speed, is the acceleration of the granular tailings movement; The determining of the second relationship constructed by the self-gravity, the buoyancy of the filling slurry, the density of the surrounding net slurry of the granular tailings, the density of the granular tailings and the particle size of the granular tailings comprises: The second relationship is constructed as: ; in, For its own gravity, is the buoyancy of the filling slurry, is the acceleration due to gravity, is the density of the net slurry around the granular tailings, is the density of the granular tailings, is the particle size of the granular tailings; The determining of the third relationship constructed by the viscous resistance, the particle size of the granular tailings, the suspension velocity, and the density of the surrounding net slurry includes: The third relationship is constructed as: ; in, is the viscous resistance, is the particle size of the granular tailings, is the suspension speed, is the density of the surrounding net slurry.

4. The method according to claim 2, characterized in that: The conditions for determining that the granular tailings reaches constant-speed settling include: Determining the acceleration of the movement of the granular tailings according to the movement speed, and determining that the movement speed is equal to the suspension speed and the acceleration is zero as a condition for the granular tailings to achieve constant speed sedimentation; The fourth relationship between the suspension velocity and the particle size of the granular tailings, the density of the surrounding net slurry, and the density of the granular tailings is constructed based on the condition, the first relationship, the second relationship, and the third relationship, and the fourth relationship is used as the dynamic mechanical property of the filling slurry, including: The fourth relationship is constructed as: ; in, is the suspension speed, is the particle size of the granular tailings, is the acceleration due to gravity, is the density of the surrounding net slurry, is the density of the granular tailings.

5. The method according to claim 1, characterized in that: The determining of a fifth relationship between the fluid dynamics of the granular tailings and the Reynolds number, the particle size of the granular tailings, the density of the granular tailings, and the suspension velocity comprises: The fifth relationship is constructed as: ; in, , is the Reynolds number, is the particle size of the granular tailings, is the density of the granular tailings, is the suspension speed; When the granular tailings reaches free suspension, based on the fifth relationship and the second relationship, a sixth relationship between the suspension velocity and the particle size of the granular tailings, the density of the surrounding net slurry, the viscosity coefficient and the density of the granular tailings is constructed, including: The second relationship is: ; The Reynolds number is: ; The sixth relationship is constructed as: ; in, is the self-gravity, is the buoyancy, is the suspension speed, is the particle size of the granular tailings, is the acceleration due to gravity, is the density of the surrounding net slurry, is the density of the granular tailings, is the viscosity coefficient.

6. The method according to claim 1, characterized in that The seventh relationship between the particle size of the granular tailings and the viscosity coefficient, the density of the surrounding net slurry, and the density of the granular tailings is constructed based on the dynamic mechanical characteristics and the sixth relationship, including: The fourth relationship is constructed as: ; The seventh relationship is constructed as: ; in, is the particle size of the granular tailings, is the viscosity coefficient, is the density of the surrounding net slurry, is the density of the granular tailings, is the acceleration due to gravity.

7. A device for determining the particle size of granular tailings used for mine filling, characterized in that: The device comprises: A configuration module is used to granulate the original tailings to obtain granular tailings, configure a filling slurry according to the granular tailings and the original tailings, and use the filling slurry for filling; A first determination module is used to determine a second relationship constructed by its own gravity, the buoyancy of the filling slurry, the density of the surrounding net slurry of the granular tailings, the density of the granular tailings, and the particle size of the granular tailings, and determine the dynamic mechanical properties of the filling slurry according to the second relationship, and determine the viscosity coefficient between the original tailings and the surrounding net slurry; A second determination module is used to determine the particle size of the granular tailings based on the dynamic mechanical characteristics and the viscosity coefficient, so as to granulate the granular tailings according to the particle size; The second determination module is used to determine the fifth relationship between the fluid dynamics of the granular tailings and the Reynolds number, the particle size of the granular tailings, the density of the granular tailings and the suspension velocity; when the granular tailings reaches free suspension, based on the fifth relationship and the second relationship, construct a sixth relationship between the suspension velocity and the particle size of the granular tailings, the density of the surrounding net slurry, the viscosity coefficient and the density of the granular tailings; based on the dynamic mechanical characteristics and the sixth relationship, construct a seventh relationship between the particle size of the granular tailings and the viscosity coefficient, the density of the surrounding net slurry and the density of the granular tailings; and determine the particle size of the granular tailings according to the seventh relationship.

8. A storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method for determining the particle size of granular tailings for mine filling as described in any one of claims 1 to 6 is implemented.

9. A computer device comprising a storage medium, a processor, and a computer program stored in the storage medium and executable on the processor, characterized in that: When the processor executes the computer program, the method for determining the particle size of granular tailings used for mine filling according to any one of claims 1 to 6 is implemented.

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