A fully automatic ore pulp preparation device and method

Abstract

The application discloses a kind of full-automatic ore pulp preparation device and method, comprising: slurry mixing component, slurry storage component, circulating component and monitoring component;Slurry mixing component is used to stir even after crushing raw ore and water;Slurry storage component is used to store slurry mixing component after stirring even so that it is mixed and ripened;Circulating component is used to extract the ore pulp stored in slurry storage component for observation, including circulating pipe on slurry storage component and circulating pump on the circulating pipe, the circulating pipe is transparent tube;Monitoring component is arranged on circulating pipe, for monitoring the parameters including temperature, concentration and viscosity of the ore pulp flowing in circulating pipe.By monitoring component monitoring the parameters of ore pulp, circulating component observes the flow state of ore pulp, then the parameters are transmitted to control component, and the slurry mixing component and slurry storage component are controlled by control component, to achieve the purpose of adjusting the parameters of ore pulp, realize high-precision control in ore pulp preparation process, ensure the stability and controllability in production process.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of ore pulp preparation, and more particularly relates to a full-automatic ore pulp preparation device and method. BACKGROUND

[0002] In the process of treating minerals, it is necessary to prepare the raw ore into ore pulp. The process of preparing ore pulp is as follows: the mined raw ore is physically treated by crushing and grinding, and then mixed with water to form a slurry with a certain concentration and fluidity. In actual operation, the proportioning and properties of the ore pulp need to be accurately controlled according to the specific mineral properties and beneficiation process requirements to achieve the best beneficiation effect. However, the existing industry has a series of problems such as low production efficiency, tedious manual operation, time-consuming, error-prone, unstable slurry quality, and the like. In addition, some ore pulp preparation devices have the problems of simple equipment structure, single function, and inability to meet diversified production needs.

[0003] At present, there is a kind of ore pulp preparation device, which includes a first installation layer, a second installation layer and a third installation layer arranged from high to low. The first installation layer is installed with an arc screen device, the second installation layer is installed with a rod mill and a ball mill, and the third installation layer is installed with an intermediate pump pool and an ore pulp storage tank. The ore and mother liquor are mixed and then enter the rod mill for grinding, and then enter the intermediate pump pool through the pipeline, and then are lifted to the arc screen device for screening by the intermediate pump. The qualified ore pulp enters the ore pulp storage tank, and the unqualified ore pulp returns to the ball mill for regrinding. The arc screen device includes two vibrating screen bodies, and the screening efficiency is improved by the buffer spring and the vibrator. The intermediate pump pool and the ore pulp storage tank are inverted conical at the bottom, which is convenient for the ore pulp to flow out.

[0004] This ore pulp preparation device reduces the use of pump body, reduces the cost, and improves the efficiency and quality of ore pulp preparation. However, the control accuracy of the device for parameters such as temperature, concentration and flow of the slurry is poor. Therefore, a full-automatic ore pulp preparation device and method are needed to accurately control the parameters of the slurry including temperature, concentration and flow to ensure the stability and controllability in the production process. SUMMARY

[0005] In view of the above defects or improvement needs of the prior art, the present application provides a full-automatic ore pulp preparation device and method, which uses a pulp mixing assembly to uniformly stir the crushed raw ore and water, uses a pulp storage assembly to store the uniformly stirred ore pulp in the pulp mixing assembly to allow the ore pulp to mix and mature, uses a circulating assembly to draw out the stored ore pulp in the pulp storage assembly for observation, uses a monitoring assembly to monitor the parameters of the ore pulp including temperature, concentration and viscosity, and uses a control assembly to control the operating parameters of the entire device. The parameters of the ore pulp are monitored by the monitoring assembly, the flow state of the ore pulp is observed by the circulating assembly, and the parameters are then transmitted to the control assembly, which controls the pulp mixing assembly and the pulp storage assembly to achieve the purpose of adjusting the parameters of the ore pulp, realize high-precision control in the ore pulp preparation process, and ensure the stability and controllability in the production process.

[0006] To achieve the above object, according to a first aspect of an embodiment of the present application, a full-automatic ore pulp preparation device is provided, which comprises a pulp mixing assembly, a pulp storage assembly, a circulating assembly and a monitoring assembly.

[0007] The pulp mixing assembly is used to uniformly stir the crushed raw ore and water.

[0008] The pulp storage assembly is used to store the uniformly stirred ore pulp in the pulp mixing assembly to allow the ore pulp to mix and mature.

[0009] The circulating assembly is used to draw out the stored ore pulp in the pulp storage assembly for observation, and comprises a circulating pipe arranged on the pulp storage assembly and a circulating pump arranged on the circulating pipe, wherein the circulating pipe is a transparent pipe.

[0010] The monitoring assembly is arranged on the circulating pipe and is used to monitor the parameters of the ore pulp flowing in the circulating pipe, including temperature, concentration and viscosity.

[0011] Further, the circulating pump draws out the ore pulp from the bottom of the pulp storage assembly, and then sends the ore pulp back from the top of the pulp storage tank after passing through the circulating pipe, so that the ore pulp continuously circulates in the circulating pipe.

[0012] When the ore pulp flows in the circulating pipe, the staff observes the flow state of the ore pulp from the outside to determine the state of the ore pulp in the pulp storage tank.

[0013] Further, the monitoring assembly comprises a thermometer, a pressure gauge, a circulating flow meter, a viscosity meter and a concentration meter.

[0014] The thermometer is arranged in the pulp storage assembly and is used to monitor the temperature of the ore pulp in the pulp storage assembly.

[0015] The pressure gauges are respectively arranged at the output end of the circulating pump and the end of the circulating pipe, and are used to monitor the pressure of the ore pulp in the circulating pipe.

[0016] The circulating flow meter is arranged on the circulating pipe and is used to monitor the flow of the ore pulp in the circulating pipe.

[0017] The viscosity meter is arranged on the circulating pipe and used for monitoring the viscosity of the ore pulp in the circulating pipe.

[0018] The concentration meter is a pressure drop type concentration meter and is arranged on the circulating pipe and used for monitoring the concentration of the ore pulp in the circulating pipe.

[0019] Further, the ore pulp mixing assembly comprises an ore pulp mixer, a belt scale, a feeder and a water storage tank.

[0020] The belt scale is used for weighing the mass of the raw ore and transmitting the raw ore to the feeder, and the raw ore is transmitted to the ore pulp mixer through the feeder.

[0021] The outlet of the water storage tank is connected to a water pipe to the ore pulp mixer, and water is transmitted to the ore pulp mixer.

[0022] Further, a water flow meter is arranged on the water pipe of the outlet of the water storage tank and used for monitoring the water adding amount to control the water adding amount.

[0023] The ore pulp mixer is used for stirring the raw ore and water transmitted thereto to uniformly and preliminarily form the ore pulp.

[0024] Further, the ore pulp storage assembly comprises an ore pulp storage tank, an agitator, a constant temperature water bath and a flushing spray head.

[0025] The ore pulp storage tank is arranged at the bottom of the ore pulp mixing assembly, and an electric valve is arranged at the connection between the ore pulp mixing assembly and the ore pulp storage tank, and the electric valve is opened to make the ore pulp flow into the ore pulp storage tank after the ore pulp in the ore pulp mixing assembly is stirred uniformly.

[0026] The agitator is arranged in the ore pulp storage tank, the fan blade of the agitator is double, and the motor of the agitator is a variable frequency motor, and the ore pulp is better mixed and matured through the stirring of the agitator.

[0027] Further, the side wall and the bottom wall of the ore pulp storage tank are double jacket structures, the top of the jacket is sealed, and a constant temperature water bath is arranged in the jacket, the inner walls of the ore pulp storage tank are in a constant temperature state through the heating of water in the constant temperature water bath, and the temperature of the ore pulp in the ore pulp storage tank is controlled by changing the power of the constant temperature water bath.

[0028] Further, a plurality of flushing spray heads are arranged on the side wall and the top wall of the ore pulp storage tank, and the flushing spray heads are rotatably fixed in the interior of the ore pulp storage tank through hinges to realize 360° rotation without dead angle and are used for cleaning the ore pulp storage tank.

[0029] According to the second aspect of the embodiment of the present application, a full-automatic ore pulp preparation method is provided, comprising:

[0030] S100, crushing large raw ores into small ores, and then grinding the small ores through a grinding device to measure the weight concentration and the true density of the ores.

[0031] S200: After weighing the finely ground ore with a belt scale, it is transferred to the feeder and then conveyed to the mixer. At the same time, a certain amount of water is added to the mixer through a water storage tank.

[0032] After the S300, ore and water are mixed evenly in the mixer, the electric valve is opened to allow the slurry to flow into the storage tank.

[0033] S400: Set the constant temperature water bath temperature, turn it on to maintain a constant temperature, heat the slurry in the mixer, and turn on the agitator to stir, so that the slurry is further mixed and matured in the mixer.

[0034] S500: Open the electric valves at both ends of the circulation pipe, start the circulation pump to draw out the slurry from the storage tank and circulate it in the circulation pipe, observe the flow pattern of the slurry, and monitor its performance parameters through the monitoring components.

[0035] S600 If the monitored performance parameters do not meet the standards, adjust the amount of water and ore added, the temperature of the constant temperature water bath, and the speed of the agitator until the design requirements are met.

[0036] S700: Open the electric valve at the bottom of the slurry tank to allow the slurry to flow out onto the discharge vehicle, which will then transport it to the next processing point. Start the flushing nozzles to clean the remaining slurry in the device.

[0037] Further, in step S500, the critical flow velocity V of the slurry in the circulation pipe is obtained based on the monitored data. c Specifically:

[0038]

[0039] Among them, C V This represents the volume fraction of the slurry.

[0040] ρ g The true density of the ore.

[0041] ρ k For slurry density,

[0042] D is the diameter of the circulation pipe, in meters.

[0043] g is the acceleration due to gravity.

[0044] d 85 This refers to the particle size through which 85% of the particles in the slurry pass;

[0045] We also need to consider the friction loss ΔW, specifically:

[0046]

[0047] Wherein, f is the friction coefficient,

[0048] L is the length of the circulating pipe,

[0049] ρ k is the pulp density,

[0050] v is the flow rate of the pulp,

[0051] D is the pipe diameter of the circulating pipe, in meters;

[0052] The friction coefficient f is obtained by multiple iterations according to the Krichevsky formula, specifically:

[0053]

[0054] Wherein, ε is the roughness of the inner wall of the circulating pipe,

[0055] Re is the Reynolds number,

[0056] D is the pipe diameter of the circulating pipe,

[0057] f0 is the preliminary guessed friction coefficient;

[0058] The Reynolds number Re is:

[0059]

[0060] Wherein, μ is the viscosity of the pulp.

[0061] ρ k is the pulp density,

[0062] v is the flow rate of the pulp,

[0063] D is the pipe diameter of the circulating pipe;

[0064] The viscosity of the pulp μ is measured by a viscometer, specifically:

[0065]

[0066] Wherein, K is the calibration constant,

[0067] ΔP is the pressure drop generated when the pulp passes through the viscometer,

[0068] D is the pipe diameter of the circulating pipe, in meters,

[0069] Q is the flow rate of the pulp, in cubic meters per second.

[0070] Overall, the above technical solutions conceived by the present application can achieve the following beneficial effects compared to the prior art:

[0071] 1. The whole automatic ore pulp preparation device of the present application, through the monitoring assembly monitoring the parameter of the ore pulp, the circulating assembly observing the flow state of the ore pulp, and then transmitting the parameter to the control assembly, the control assembly controls the ore pulp mixing assembly and the ore pulp storage assembly, so as to achieve the purpose of adjusting the parameter of the ore pulp, realize the high-precision control in the ore pulp preparation process, and ensure the stability and controllability in the production process.

[0072] 2. The whole automatic ore pulp preparation device of the present application, the ore pulp is extracted into the circulating pipe 5 to flow, so as to measure the pressure, viscosity and concentration of the ore pulp flowing through the monitoring assembly, change the traditional static measurement mode, make the measurement scene more close to the subsequent processing scene, and then adjust the parameters of the device according to the monitored parameters, so that the performance meets the requirements, so as to improve the product quality and production efficiency.

[0073] 3. The whole automatic ore pulp preparation device of the present application, the ore pulp in the ore pulp storage tank is extracted and circulated to obtain the state information of the ore pulp in the ore pulp storage tank, and the parameters of the device are adjusted according to the obtained state information, so as to obtain the required ore pulp, avoid the ore pulp in the ore pulp storage tank being closed and unable to be observed, and enhance the control effect of the device on the ore pulp preparation.

[0074] 4. The whole automatic ore pulp preparation device of the present application, the performance of the prepared ore pulp meets the requirements by controlling other parameters with the on-site temperature in the subsequent processing process as the condition, and then taking the control parameters of the device as the initial condition, a large amount of ore pulp is prepared, so that the prepared ore pulp can meet the use requirements of the subsequent process, so as to improve the production efficiency and ensure the product quality. BRIEF DESCRIPTION OF DRAWINGS

[0075] Figure 1 It is the whole structure schematic diagram of the whole automatic ore pulp preparation device of the embodiment of the present application;

[0076] Figure 2 It is the connection relationship schematic diagram between the components in the whole automatic ore pulp preparation device of the embodiment of the present application;

[0077] Figure 3 It is the flow schematic diagram of the whole automatic ore pulp preparation method of the embodiment of the present application;

[0078] Figure 4 It is the flow schematic diagram of the whole automatic ore pulp preparation test method of the embodiment of the present application.

[0079] In all the drawings, the same reference signs represent the same technical features, specifically: 1 - pulp mixer, 2 - pulp storage tank, 3 - stirrer, 4 - constant temperature water bath, 5 - circulation pipe, 6 - circulation pump, 7 - belt scale, 8 - feeder, 9 - water storage tank, 10 - flushing nozzle, 11 - discharge vehicle, 12 - controller, 13 - thermometer, 14 - pressure gauge, 15 - circulation flow meter, 16 - viscometer, 17 - concentration meter, 18 - water flow meter. DETAILED DESCRIPTION

[0080] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application is further described in detail below with reference to the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application. In addition, the technical features involved in each embodiment of the present application described below can be combined with each other as long as they do not conflict with each other.

[0081] Example 1

[0082] As shown in Figure 1 , 2 , the present application provides a full-automatic ore pulp preparation device, which comprises a pulp mixing assembly, a pulp storage assembly, a circulation assembly, a monitoring assembly and a control assembly. The pulp mixing assembly is used to uniformly stir the crushed raw ore and water, the pulp storage assembly is used to store the uniformly stirred ore pulp in the pulp mixing assembly to allow the mixture to mature, the circulation assembly is used to draw out the stored ore pulp in the pulp storage assembly for observation, the monitoring assembly is used to monitor the parameters of the ore pulp, including temperature, concentration and viscosity, and the control assembly is used to control the operating parameters of the entire device. By monitoring the parameters of the ore pulp through the monitoring assembly, observing the flow state of the ore pulp through the circulation assembly, and then transmitting the parameters to the control assembly, the control assembly controls the pulp mixing assembly and the pulp storage assembly to achieve the purpose of adjusting the parameters of the ore pulp, realize high-precision control in the ore pulp preparation process, and ensure the stability and controllability in the production process.

[0083] The pulp mixing assembly comprises a pulp mixer 1, a belt scale 7, a feeder 8 and a water storage tank 9. The belt scale 7 is used to weigh the mass of the raw ore and transmit the raw ore to the feeder 8, the feeder 8 is used to deliver the raw ore to the pulp mixer 1, and the outlet of the water storage tank 9 is connected to a water pipe to the pulp mixer 1 to deliver water into the pulp mixer 1. The feeder 8 is a screw feeder, and a water flow meter 18 is further arranged on the water pipe at the outlet of the water storage tank 9 to monitor the water addition amount for control. The pulp mixer 1 is used to stir the raw ore and water delivered therein to uniformly and preliminarily form ore pulp.

[0084] The slurry storage assembly comprises a slurry storage tank 2, an agitator 3, a constant temperature water bath 4 and a flushing nozzle 10. The slurry storage tank 2 is arranged at the bottom of the slurry mixer 1, and an electric valve is arranged at the connection between the slurry storage tank 2 and the slurry mixer 1. After the slurry in the slurry mixer 1 is uniformly stirred, the electric valve is opened to allow the slurry to flow into the slurry storage tank 2. The slurry storage tank 2 is provided with an agitator 3, the fan blade of the agitator 3 is double, and the motor of the agitator 3 is a variable frequency motor. The slurry is better mixed and matured through the stirring of the slurry. The side wall and the bottom wall of the slurry storage tank 2 are double-jacket structures, the top of the jacket is sealed, and the constant temperature water bath 4 is arranged in the jacket. The constant temperature water bath 4 is used to heat the water to keep all the inner walls of the slurry storage tank 2 at a constant temperature. The temperature of the slurry in the slurry storage tank 2 is controlled by changing the power of the constant temperature water bath 4. A plurality of flushing nozzles 10 are arranged on the side wall and the top wall of the slurry storage tank 2. The flushing nozzles 10 are rotatably fixed in the slurry storage tank 2 by hinges to realize 360° rotation without dead angle, which is used to clean the slurry storage tank 2 to prevent cross contamination between different ores when preparing slurry from different ores.

[0085] The bottom of the slurry storage tank 2 is also provided with a discharge port, and a discharge vehicle 11 is arranged at the discharge port. An electric valve is arranged at the discharge port to control the flow of the slurry in the slurry storage tank 2 to the discharge vehicle 11 and then transported to the next process for treatment.

[0086] The circulating assembly comprises a circulating pipe 5 and a circulating pump 6. One end of the circulating pipe 5 is connected to the top of the slurry storage tank 2, and the other end is connected to the bottom of the slurry storage tank 2. A circulating pump 6 is arranged on the circulating pipe 5. The circulating pump 6 is used to pump the slurry out of the bottom of the slurry storage tank 2, and then send it back from the top of the slurry storage tank 2 after passing through the circulating pipe 5, so that the slurry continuously circulates in the circulating pipe 5. The circulating pipe 5 is a transparent pipe. When the slurry flows in the circulating pipe 5, the staff can observe the flow state of the slurry from the outside to determine the state of the slurry in the slurry storage tank 2. By pumping the slurry in the slurry storage tank 2 to observe the state information of the slurry in the slurry storage tank 2, and adjusting the parameters of the device according to the obtained state information, the slurry that meets the requirements can be obtained, which avoids the problem that the slurry in the slurry storage tank 2 cannot be observed, and enhances the control effect of the device on the preparation of the slurry.

[0087] Electric valves are also arranged at both ends of the circulating pipe 5.

[0088] The monitoring assembly comprises a thermometer 13, a pressure gauge 14, a circulating flow meter 15, a viscosity meter 16 and a concentration meter 17. The thermometer 13 is arranged on the inner wall of the slurry storage tank 2 and used for monitoring the temperature of the slurry in the slurry storage tank 2. The pressure gauges 14 are respectively arranged at the output end of the circulating pump 6 and the end of the circulating pipe 5 and used for monitoring the pressure of the slurry in the circulating pipe 5. The circulating flow meter 15 is arranged on the circulating pipe 5 and used for monitoring the flow of the slurry in the circulating pipe 5. The viscosity meter 16 is arranged on the circulating pipe 5 and used for monitoring the viscosity of the slurry in the circulating pipe 5. The concentration meter 17 is a pressure drop type concentration meter and is arranged on the circulating pipe 5 and used for monitoring the concentration of the slurry in the circulating pipe 5. The slurry is extracted to flow in the circulating pipe 5, so that the pressure, the viscosity and the concentration of the slurry flowing are measured by the monitoring assembly, the mode of traditional static measurement is changed, the measurement scene is closer to the subsequent processing scene, the parameters of the device are adjusted according to the monitored parameters, the performance of the device is more in line with the requirements, the quality of the product is improved, and the production efficiency is improved.

[0089] The control assembly comprises a controller 12, which is connected with the mixing assembly, the slurry storage assembly, the circulating assembly and the monitoring assembly through signals, and is used for controlling the above assemblies to make adjustments according to the monitored parameters of the slurry, so that the slurry meets the design requirements, the purpose of automatic control is achieved, the parameters of the slurry including the temperature, the concentration and the flow are accurately controlled, the stability and controllability in the production process are ensured, and the production efficiency is improved.

[0090] Embodiment 2

[0091] As shown in Figure 3 The embodiment of the present application provides a full-automatic slurry preparation method, which specifically comprises the following steps:

[0092] S100, crushing large bulk ore into smaller ore, and then grinding the smaller ore by a grinding device, and measuring the weight concentration and the true density of the ore;

[0093] S200, weighing the ground ore by the belt scale 7, and then transmitting the ground ore to the feeder 8, conveying the ground ore to the slurry mixer 1 by the feeder 8, and adding a certain amount of water into the slurry mixer 1 by the water storage tank 9;

[0094] S300, after the ore and the water are uniformly stirred in the slurry mixer 1, an electric valve is opened, so that the slurry flows into the slurry storage tank 2;

[0095] S400, setting the temperature of the constant-temperature water bath 4, and then opening the constant-temperature water bath 4 to keep the temperature constant, heating the slurry in the slurry mixer 1, and opening the stirrer 3 to stir, so that the slurry is further mixed and matured in the slurry mixer 1;

[0096] S500, open the electric valve at both ends of the circulating pipe 5, open the circulating pump 6 to extract the ore pulp in the ore pulp storage tank 2 to make it circulate in the circulating pipe 5, observe the flow state of the ore pulp, and monitor its performance parameters through the monitoring assembly;

[0097] S600, if the monitored performance parameters do not meet the requirements, adjust the amount of water and ore added, the temperature of the constant temperature water bath 4, and the rotating speed of the stirrer 3 until the design requirements are met.

[0098] S700, open the electric valve at the bottom of the ore pulp storage tank 2 to make the ore pulp in it flow out to the discharge car 11, which is transported to the next processing point by the discharge car 11, and the flushing nozzle 10 is started to flush the residual ore pulp in the device.

[0099] In step S100, the weight concentration of the ore is obtained by measuring the moisture in the ore with a fast water instrument and then converting it, denoted as C w ; the true density of the ore is measured by the Lee specific gravity method, denoted as p g ; the ore pulp density p w is calculated from the weight concentration of the ore C g and the true density of the ore p k , specifically:

[0100]

[0101] The ore pulp density p k is calibrated to be equal to the density of the required ore pulp, and then the required mass of ore and the volume of water to be added are obtained.

[0102] In step S200, the required mass of ore and the volume of water obtained are input into the controller 12, and the belt scale 7 and the water flow meter 18 are used to quantitatively add ore and water, respectively.

[0103] In step S500, the performance parameters of the ore pulp include pressure, viscosity, and concentration.

[0104] In step S500, the critical flow velocity V c of the ore pulp in the circulating pipe 5 is obtained according to the monitored data, specifically:

[0105]

[0106] where C V is the volume fraction of the ore pulp,

[0107] p g is the true density of the ore,

[0108] p k is the density of the ore pulp,

[0109] D is the diameter of the circulating pipe in meters,

[0110] g is the acceleration of gravity,

[0111] d 85 is the particle size at which 85% of the particles in the slurry pass.

[0112] In step S500, the friction loss ΔW also needs to be considered, specifically:

[0113]

[0114] wherein f is the friction coefficient,

[0115] L is the length of the circulating pipe,

[0116] ρ k is the density of the slurry,

[0117] v is the flow rate of the slurry,

[0118] D is the pipe diameter of the circulating pipe, in meters.

[0119] The friction coefficient f is obtained by multiple iterations of the Krichevsky formula, specifically:

[0120]

[0121] wherein ε is the roughness of the inner wall of the circulating pipe,

[0122] Re is the Reynolds number,

[0123] D is the pipe diameter of the circulating pipe,

[0124] f0 is the preliminary guessed friction coefficient.

[0125] The Reynolds number Re is:

[0126]

[0127] wherein μ is the viscosity of the slurry.

[0128] ρ k is the density of the slurry,

[0129] v is the flow rate of the slurry,

[0130] D is the pipe diameter of the circulating pipe.

[0131] The viscosity of the slurry μ is measured by a viscometer 16, specifically:

[0132]

[0133] wherein K is the calibration constant,

[0134] ΔP is the pressure drop generated when the slurry passes through the viscometer,

[0135] D is the pipe diameter of the circulating pipe, in meters,

[0136] Q is the flow rate of the ore pulp, in cubic meters per second.

[0137] Example 3

[0138] The device in Example 1 can also be used to simulate the air temperature conditions on site to obtain the required data, and then prepare the ore pulp based on the data.

[0139] As shown in Figure 4 the embodiment of the present application provides a kind of full-automatic ore pulp preparation test method, specifically comprising the following steps:

[0140] T100, the large bulk ore is crushed into smaller ore, and then the ore is ground finely using a grinding device, and the weight concentration and true density of the ore are measured;

[0141] T200, the finely ground ore is weighed by a belt scale 7 and then transferred to a feeder 8, which is conveyed to a pulp mixer 1, and a fixed amount of water is added to the pulp mixer 1 through a water storage tank 9;

[0142] T300, after the ore and water are uniformly stirred in the pulp mixer 1, the electric valve is opened to allow the ore pulp to flow into the storage tank 2, and the stirrer 3 is started to further mix and mature the ore pulp in the pulp mixer 1;

[0143] T400, the temperature of the constant-temperature water bath 4 is set to the on-site temperature for subsequent processing of the ore pulp, and the constant-temperature water bath 4 is started to maintain a constant temperature, so that the temperature of the ore pulp is consistent with the on-site temperature;

[0144] T500, the electric valves at both ends of the circulating pipe 5 are opened, the circulating pump 6 is started to draw the ore pulp from the storage tank 2 and circulate it in the circulating pipe 5, the flow state of the ore pulp is observed, and the performance parameters are monitored by a monitoring assembly;

[0145] T600, if the monitored performance parameters do not meet the requirements, the amount of water and ore added, the speed of the stirrer 3 are adjusted, and the temperature of the constant-temperature water bath 4 is kept constant until the design requirements are met;

[0146] T700, the operating parameters of each component of the device are recorded, the flushing nozzles 10 are started, and the residual ore pulp in the device is flushed clean.

[0147] By using the on-site temperature in subsequent processing procedures as a condition, other parameters are controlled to make the performance of the prepared ore pulp meet the requirements, and using the control parameters of the device as initial conditions, a large amount of ore pulp is prepared, so that the prepared ore pulp can meet the use requirements of subsequent procedures, to improve production efficiency and ensure product quality.

[0148] Those skilled in the art can understand that the above description is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A fully automatic ore pulp preparation device, characterized in that, The application relates to a slurry mixing device. The device comprises a slurry mixing assembly, a slurry storage assembly, a circulation assembly and a monitoring assembly. The slurry mixing assembly is used for uniformly mixing crushed raw ore and water. The slurry storage assembly comprises a slurry storage tank (2) for storing the uniformly mixed slurry in the slurry mixing assembly. The circulation assembly is used for extracting the slurry stored in the slurry storage assembly for observation, and comprises a circulation pipe (5) arranged on the slurry storage assembly and a circulation pump (6) arranged on the circulation pipe (5), wherein the circulation pipe (5) is a transparent pipe. The monitoring assembly is arranged on the circulation pipe (5) and is used for monitoring the parameters of the slurry flowing in the circulation pipe (5), such as temperature, concentration and viscosity. The device further comprises a control assembly, and the parameters are transmitted to the control assembly, and the control assembly controls the slurry mixing assembly and the slurry storage assembly. The circulation pump (6) extracts the slurry from the bottom of the slurry storage assembly, and then sends the slurry back from the top of the slurry storage tank (2) through the circulation pipe (5), so that the slurry continuously circulates in the circulation pipe (5). When the slurry flows in the circulation pipe (5), the working personnel can observe the flow state of the slurry from outside to determine the state of the slurry in the slurry storage tank (2). The monitoring assembly comprises a thermometer (13), a pressure gauge (14), a circulation flowmeter (15), a viscometer (16) and a concentration meter (17). The thermometer (13) is arranged in the slurry storage assembly and is used for monitoring the temperature of the slurry in the slurry storage assembly. The pressure gauge (14) is arranged at the output end of the circulation pump (6) and the end of the circulation pipe (5) respectively, and is used for monitoring the pressure of the slurry in the circulation pipe (5). The circulation flowmeter (15) is arranged on the circulation pipe (5) and is used for monitoring the flow of the slurry in the circulation pipe (5). The viscometer (16) is arranged on the circulation pipe (5) and is used for monitoring the viscosity of the slurry in the circulation pipe (5). The concentration meter (17) is a pressure drop type concentration meter, is arranged on the circulation pipe (5) and is used for monitoring the concentration of the slurry in the circulation pipe (5).

2. The fully automatic ore pulp preparation device according to claim 1, characterized in that, The slurry mixing assembly comprises a slurry mixer (1), a belt scale (7), a feeder (8) and a water storage tank (9). The belt scale (7) is used for weighing the mass of the raw ore, and the raw ore is transmitted to the feeder (8), and the feeder (8) is used for conveying the raw ore into the slurry mixer (1). The outlet of the water storage tank (9) is connected with a water pipe to the slurry mixer (1), and the water is conveyed into the slurry mixer (1).

3. A fully automatic ore pulp preparation device according to claim 2, characterized in that, A water flowmeter (18) is further arranged on the water pipe of the outlet of the water storage tank (9) and is used for monitoring the water adding amount to control the water adding amount. The slurry mixer (1) is used for mixing the raw ore and water conveyed into the slurry mixer (1) to uniformly and preliminarily form the slurry.

4. The fully automatic ore pulp preparation device according to claim 1, characterized in that, The slurry storage assembly further comprises an agitator (3), a constant temperature water bath (4) and a flushing nozzle (10). The slurry storage tank (2) is arranged at the bottom of the slurry mixing assembly, and an electric valve is arranged at the connecting position between the slurry mixing assembly and the slurry storage tank (2), the electric valve is opened after the slurry in the slurry mixing assembly is uniformly mixed, and the slurry flows into the slurry storage tank (2). The slurry storage tank (2) is provided with the agitator (3), the fan blade of the agitator (3) is double, and the motor of the agitator (3) is a variable frequency motor, so that the slurry is better mixed and matured through the mixing of the slurry.

5. A fully automatic ore pulp preparation device according to claim 4, characterized in that, The side wall and bottom wall of the slurry storage tank (2) are double jacketed structures, the top of the jacket is sealed, and a constant temperature water bath (4) is arranged in the jacket.

6. A fully automatic ore pulp preparation device according to claim 5, characterized in that, A plurality of flushing nozzles (10) are arranged on the side wall and top wall of the slurry storage tank (2), the flushing nozzles (10) are rotatably fixed in the interior of the slurry storage tank (2) through hinges to realize 360° rotation without dead angle, and are used for cleaning the slurry storage tank (2).

7. A fully automatic ore pulp preparation method, which is implemented using a fully automatic ore pulp preparation device according to any one of claims 1 to 6, characterized in that, Comprise: S100, crushing large raw ore into smaller ore, and then grinding the ore by a grinding device, measuring the weight concentration and true density of the ore; S200, weighing the ground ore by a belt scale (7), and then conveying the ore to a feeder (8), conveying the ore to a slurry mixer (1) by the feeder (8), and adding a certain amount of water into the slurry mixer (1) by a water storage tank (9); S300, after the ore and water are uniformly stirred in the slurry mixer (1), an electric valve is opened, and the slurry flows into the slurry storage tank (2); S400, setting the temperature of the constant temperature water bath (4), and opening the constant temperature water bath (4) to keep the temperature constant, heating the slurry in the slurry mixer (1), and opening a stirrer (3) to stir, so that the slurry is further mixed and matured in the slurry mixer (1); S500, opening the electric valves at both ends of the circulating pipe (5), starting the circulating pump (6) to draw the slurry in the slurry storage tank (2) to circulate in the circulating pipe (5), observing the flow state of the slurry, and monitoring the performance parameters of the slurry by a monitoring assembly; S600, if the monitored performance parameters do not meet the design requirements, the amount of water and ore, the temperature of the constant temperature water bath (4), and the rotating speed of the stirrer (3) are adjusted until the design requirements are met; S700, opening the electric valve at the bottom of the slurry storage tank (2) to make the slurry in the slurry storage tank (2) flow out to a discharge vehicle (11), and then transported to the next processing point by the discharge vehicle (11), and starting the flushing nozzles (10) to flush the residual slurry in the device.

8. A fully automatic ore pulp preparation method according to claim 7, characterized in that, In step S500, the critical flow rate of the slurry in the circulation pipe (5) is obtained according to the monitored data Specifically, ， wherein, is the volume fraction of the ore slurry, True density of the ore, ρ is the pulp density, Dp is the pipe diameter of the circulation pipe, in meters, g is the gravitational acceleration, P80 is the particle size at which 85% of the particles in the slurry pass; Frictional losses also need to be taken into account In particular: ， wherein is the coefficient of friction, for the length of the circulation tube, ρ is the pulp density, for the flow rate of the slurry, D is the diameter of the circulation pipe in meters; the friction coefficient is obtained by multiple iterations from the krishchenikov formula.

Images