A high-speed pre-dispersed silica mortar preparation system and operation method for concrete

Abstract

The present invention discloses a high-speed pre-dispersed silica ash slurry preparation system and operation method for concrete, wherein the outlets of the silica ash metering bin and the dispersion liquid metering bin are connected to a high-speed dispersion device through a discharge valve A and a discharge valve B respectively, a mortar valve is provided at the bottom of the high-speed dispersion device, the mortar valve is connected to a 1# mortar pump, the end of the 1# mortar pump pipeline is connected to a temporary storage tank through a slurry delivery pipe, a 2# solenoid valve is provided at the bottom of the temporary storage tank, the output end of the 2# solenoid valve is connected to a 2# mortar pump, and the output end of the 2# mortar pump is connected to a pipeline with a return slurry valve and a mortar metering valve respectively to connect the high-speed dispersion device and the silica ash slurry metering scale; a slurry discharge valve is provided under the silica ash slurry metering scale, and is connected to a concrete mixer through a pipeline. The system of the present invention can complete the metering, dispersing preparation, temporary storage, filling, and return material replenishment of silica ash in the dispersion liquid, solves the problem of large difference in working rhythm between the concrete mixing system and the silica ash slurry dispersion system, and realizes accurate and continuous production and preparation of high-speed pre-dispersed silica ash slurry concrete.

Description

Technical Field

[0001] The invention belongs to the technical field of application of silica fume, a high-activity auxiliary cementitious material in building materials, and specifically relates to a high-speed pre-dispersed silica fume slurry preparation system and an operation method for silica fume slurry material applied in concrete, especially in early strength and steam-cured concrete. Background Art

[0002] Silica ash is a highly volatile sulfur produced in a large amount in the electric furnace during the smelting of ferrosilicon and industrial silicon (metallic silicon). i O2 and S i Gas, after being discharged, is rapidly oxidized and condensed with air to form a precipitate. The average particle size of silica fume is 0.1-1μm, which is 1 / 50-1 / 100 of ordinary cement particles, and the specific surface area is 15000-25000m2 / kg. The main component is amorphous silicon dioxide, which accounts for more than 85%. The chemical composition and particle size of silica fume determine that silica fume is a highly active volcanic ash admixture, which has many beneficial effects on the macroscopic mechanical properties and durability of cement and concrete, and has been widely studied and applied.

[0003] However, there are some problems in the actual application of silica fume, mainly manifested in that the bulk density of the undensified original silica fume after dust collection is between 100 and 200 kg / m 3 The silica fume is in a loose powder state and is easy to fly. This characteristic brings great difficulties to the transportation, storage and metering of the original silica fume. Therefore, most of the silica fume used in engineering applications at present is processed by compressed air through special densification equipment to form densified silica fume with micron-level or even millimeter-level agglomerated particles.

[0004] Although densified silica fume solves the transportation and use problems caused by the low density of original silica fume, it also brings about a higher degree of agglomeration of densified silica fume than original silica fume. Such agglomerates are often difficult to be effectively dispersed in the conventional cement concrete preparation process. Silica fume agglomerates often absorb water and admixtures, resulting in reduced concrete workability and increased workability loss. After the concrete hardens, the locally enriched coarse-grained agglomerates will gradually react with the hydration product, calcium hydroxide, and other alkali silicate reactions, causing expansion and cracking, which in turn affects the long-term strength and durability of the concrete.

[0005] Therefore, pre-dispersing the densified silica fume before adding it to concrete can solve both the transportation problem of silica fume and the dispersion problem of silica fume in concrete. However, the current high-speed dispersion process has a large difference in time between the concrete production cycle and can hardly meet the continuous and normal production of concrete.

[0006] On the other hand, even in the presence of a dispersant, after a long period of standing (depending on the surfactant, generally 0.5-7 days), some silica fume particles with higher surface energy will reagglomerate after high-speed dispersion and dissociation of tiny silica fume particles, resulting in poor early activity of the prepared silica ash mortar concrete, reduced workability, and slightly increased workability loss. Therefore, in order to ensure the continuous and stable production of pre-dispersed silica ash mortar, it is necessary to disperse the silica ash mortar that has been dispersed and stood for a long time for a second time before adding it to the concrete.

[0007] At the same time, due to the low volume density and large specific surface area of ​​silica fume, it is easy to agglomerate during the reamer conveying process in the screw conveyor, resulting in large deviations in silica fume metering, which in turn leads to large fluctuations in the moisture content of silica fume slurry and affects the accuracy of the pre-dispersed silica fume slurry concrete mix ratio. Summary of the invention

[0008] Therefore, in order to solve the above-mentioned shortcomings, the present invention provides a high-speed pre-dispersed silica mortar preparation system and operation method for concrete, which can effectively solve the problems of large difference in working rhythm between the existing concrete mixing system and the high-speed pre-dispersed silica mortar dispersion system, agglomeration of particles in the high-speed pre-dispersed silica mortar that has been dispersed but has been left stationary for a long time, and large fluctuations in the moisture content of the silica mortar, so as to realize the continuous, stable and accurate production and preparation of high-speed pre-dispersed silica mortar concrete.

[0009] The present invention is implemented in this way, constructing a high-speed pre-dispersed silica ash slurry preparation system for concrete, characterized in that: the system includes: a silica ash metering bin, a dispersion liquid metering bin, a high-speed dispersing device, a 1# slurry pump, a temporary storage tank, a 2# slurry pump, a silica ash slurry metering scale and a silica ash slurry preparation system automatic controller; a discharge valve A is provided below the silica ash metering bin, and a discharge valve B is provided below the dispersion liquid metering bin, and the outlets of the silica ash metering bin and the dispersion liquid metering bin are connected to the high-speed dispersing device through the discharge valve A and the discharge valve B respectively, and the high-speed dispersing device A mortar valve is provided at the bottom of the device, which is connected to the 1# mortar pump. The end of the 1# mortar pump pipeline is connected to the temporary storage tank through the slurry delivery pipe. A 2# solenoid valve is provided at the bottom of the temporary storage tank. The output end of the 2# solenoid valve is connected to the 2# mortar pump. The output end of the 2# mortar pump is connected to the pipeline with a return slurry valve and a mortar metering valve to connect the high-speed dispersion device and the silica mortar metering scale respectively; a slurry discharge valve is provided under the silica mortar metering scale, and is connected to the concrete mixer through a pipeline. The above components are connected to the automatic controller of the silica mortar preparation system through a signal line.

[0010] According to the present invention, a high-speed pre-dispersed silica ash slurry preparation system for concrete is characterized in that the temporary storage tank has a silica ash slurry density and moisture content detection and signal transmission device, a silica ash slurry slow stirring device, a stirring blade, and a silica ash slurry level meter.

[0011] According to the present invention, a high-speed pre-dispersed silica ash slurry preparation system for concrete is characterized in that the silica ash slurry density and moisture content detection and signal transmission device transmits the density and moisture content signals to the silica ash slurry preparation system automatic controller and the mixing station batching system, which is used to determine whether the silica ash slurry moisture content is qualified and accurately calculate the silica ash slurry usage under the specified silica ash dosage and deduct the water usage for concrete production mix ratio.

[0012] According to the present invention, a high-speed pre-dispersed silica ash slurry preparation system for concrete is characterized in that the silica ash slurry level meter transmits the level signal to the silica ash slurry preparation system automatic controller and the concrete mixing system to determine whether to prepare silica ash slurry and produce concrete.

[0013] According to the present invention, a high-speed pre-dispersed silica ash slurry preparation system for concrete is characterized in that: the function of the automatic controller of the silica ash slurry preparation system is to complete the preparation of silica ash slurry according to the set ratio and stirring control parameters, monitor the silica ash slurry density and moisture content detection and signal transmission device, the moisture content and level data fed back by the silica ash slurry level meter and the time parameters of the system operation to determine whether to return or replenish the slurry and redisperse it, determine whether to prepare the next batch of silica ash slurry and add it to the silica ash temporary storage tank, record, query and export the mortar batching data, moisture content data and return and replenishment data.

[0014] According to the present invention, a high-speed pre-dispersed silica mortar preparation system for concrete is characterized in that: the high-speed dispersing device has a high-speed motor with a frequency conversion controller and a high-speed jet cavitation dispersing device, the high-speed motor can realize the speed of the high-speed jet cavitation dispersing device to increase from 0 to a constant speed within 5s-60s, the constant speed is 500-20000r / min, the blade shear rate of the high-speed jet cavitation dispersing device is higher than 20m / s, the blade and paddle shear rate is higher than 14m / s, and the constant speed time is 0.5-10min.

[0015] According to the present invention, a high-speed pre-dispersed silica mortar preparation system for concrete is characterized in that the high-speed dispersing device is single-axis or multi-axis, and each axis is a single blade or multiple blades.

[0016] According to the present invention, a high-speed pre-dispersed silica ash slurry preparation system for concrete is characterized in that the high-speed dispersing device also includes a high-speed jet cavitation dispersing device, and the maximum flow rate of the slurry is not less than 14m / s, forming a cavitation dispersion effect to achieve the dissociation and dispersion of silica ash agglomerates.

[0017] A method for preparing high-speed pre-dispersed silica mortar for concrete, characterized in that the working process is:

[0018] (1) The equipment is turned on, and the silica ash and dispersion liquid are measured according to the input batching parameters, and the materials are fed into the high-speed dispersing device. The high-speed dispersing device starts to increase the speed to a constant speed (such as 3000r / min) according to the speed increase system, and maintains the constant speed for a certain period of time (such as 5min) and then decreases the speed to 0r / min. The mortar valve and 1# mortar pump are opened to pump the slurry into the temporary storage tank. After the slurry is pumped, the mortar valve and 1# mortar pump are closed, and the slurry is pumped in reverse until the feedback signal of the mortar level meter in the temporary storage tank indicates that the mortar volume reaches more than 80% of the total volume of the temporary storage tank, and the control system stops the slurry making operation;

[0019] (2) Mortar moisture content: Detect the mortar moisture content parameters and transmit the moisture content data to the automatic controller. When the automatic controller determines that the moisture content deviates from the preset value (e.g., ≤±5%), the moisture content data is transmitted to the concrete production control system. The production control system calculates the production mix ratio according to the parameters. The production control system controls the No. 2 mortar pump, mortar valve, silica mortar metering scale, and metering discharge valve to complete the metering of silica mortar and discharge it to the mixer.

[0020] (3) When the automatic controller determines that the moisture content deviates from the preset value (e.g., ≤±5%), the mortar valve is closed, the return valve is opened, and the No. 2 mortar pump is started. After all the silica ash mortar that exceeds the tolerance is returned to the disperser, the mortar valve is closed, the return valve is closed, the No. 2 mortar pump is closed, the silica ash or dispersion liquid metering scale is started, the silica ash or dispersion liquid is calculated and added, and the silica ash or dispersion liquid is re-dispersed and pumped into the temporary storage tank, and the moisture content is tested and feedback controlled again until the moisture content is ≤ the agreed value (e.g., ≤±5%).

[0021] (4) When the feedback signal from the material level sensor shows that the amount of slurry has dropped to a specified lower limit (e.g., 30%), the next round of dispersed slurry making and filling is started;

[0022] (5) When the automatic controller determines that the storage time of the slurry in the mortar tank is higher than the preset time (e.g. ≥0.5d), the mortar valve is closed, the return valve is opened, and the No. 2 mortar pump is started. After all the silica ash slurry stored for a long time is returned to the disperser, the mortar valve is closed, the return valve is closed, the No. 2 mortar pump is closed, and the slurry is re-dispersed and pumped into the temporary storage tank.

[0023] The present invention has the following advantages: The present invention provides a high-speed pre-dispersed silica ash slurry preparation system and operation method for concrete, the system includes a silica ash metering bin, a dispersion liquid metering bin, a high-speed dispersing device, a 1# slurry pump, a temporary storage tank, a 2# slurry pump, a silica ash slurry metering scale and a silica ash slurry preparation system automatic controller; it can effectively solve the problems of large difference in working rhythm between the existing concrete mixing system and the high-speed pre-dispersed silica ash slurry dispersion system, agglomeration of particles in the high-speed pre-dispersed silica ash slurry that has been dispersed but has been stationary for a long time, and large fluctuations in the moisture content of the silica ash slurry, and realize the continuous, stable and accurate production and preparation of high-speed pre-dispersed silica ash slurry concrete. The present invention also has the following beneficial effects:

[0024] 1. By setting up a high-speed pre-dispersed silicon temporary storage tank and using a reasonable control system and control parameters, the problem of large difference in working rhythm between the existing concrete mixing system and the high-speed pre-dispersed silicon mortar dispersion system can be effectively solved.

[0025] 2. By setting up a pre-dispersed mortar return device, combined with the control system and parameter settings, the particles in the high-speed pre-dispersed silica mortar that have been dispersed but have been stationary for a long time are agglomerated and dispersed again to solve the negative impact of concrete caused by the agglomerated silica mortar that has been stationary for a long time.

[0026] 3. By setting up the moisture content detection of pre-dispersed mortar and directly connecting the moisture content data to the mix control system of the mixing station to recalculate the production mix according to the measured value, or when the moisture content fluctuates greatly, through the return material replenishment device and control mechanism, combined with the control system and parameter settings, the silica ash with large fluctuations in moisture content of the silica ash mortar is secondary formulated, which solves the problem of production mix accuracy caused by the fluctuation of moisture content of silica ash mortar, and realizes the continuous, stable and accurate production and preparation of high-speed pre-dispersed silica ash mortar concrete. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of a high-speed pre-dispersed silica mortar preparation system for concrete according to the present invention.

[0028] Among them: silica ash metering bin 1, discharge valve A1-1, dispersion liquid metering bin 2, discharge valve B2-1, high-speed dispersion device 3, slurry valve 3-1, return slurry valve 3-2, high-speed motor 3-3, high-speed jet cavitation dispersion device 3-4, 1# slurry pump 4, temporary storage tank 5, 2# solenoid valve 5-1, silica ash slurry density and moisture content detection and signal transmission device 5-2, silica ash slurry slow stirring device 5-3, stirring blades 5-4, silica ash slurry level meter 5-5, 2# slurry pump 6, silica ash slurry metering scale 7, slurry metering valve 7-1, slurry discharge valve 7-2. DETAILED DESCRIPTION

[0029] The following will be combined with the attached Figure 1 The present invention is described in detail, and the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] The present invention provides a high-speed pre-dispersed silica mortar preparation system for concrete through improvement, and the implementation process is as follows;

[0031] A high-speed pre-dispersed silica mortar preparation system for concrete, such as Figure 1 As shown, the system includes: a silica ash metering bin 1, a dispersion liquid metering bin 2, a high-speed dispersion device 3, a 1# mortar pump 4, a temporary storage tank 5, a 2# mortar pump 6, a silica ash slurry metering scale 7 and a silica ash slurry preparation system automatic controller 8; a discharge valve A1-1 is provided below the silica ash metering bin 1, and a discharge valve B2-1 is provided below the dispersion liquid metering bin 2. The outlets of the silica ash metering bin 1 and the dispersion liquid metering bin 2 are connected to the high-speed dispersion device 3 through the discharge valve A1-1 and the discharge valve B2-1 respectively. A mortar valve 3-1 is provided at the bottom of the high-speed dispersion device 3. The mortar valve 3-1 is connected to the The 1# mortar pump 4 is connected, and the end of the pipeline of the 1# mortar pump 4 is connected to the temporary storage tank 5 through the slurry conveying pipe. A 2# solenoid valve 5-1 is provided at the bottom of the temporary storage tank 5. The output end of the 2# solenoid valve 5-1 is connected to the 2# mortar pump 6. The output end of the 2# mortar pump 6 is connected to the high-speed dispersion device 3 and the silica mortar metering scale 7 with the pipelines with the return slurry valve 3-2 and the mortar metering valve 7-1 respectively; a slurry discharge valve 7-2 is provided under the silica mortar metering scale 7, and is connected to the concrete mixer through a pipeline. The above components are connected to the silica mortar preparation system automatic controller 8 through a signal line.

[0032] When the present invention is implemented, the temporary storage tank 5 has a silica slurry density and moisture content detection and signal transmission device 5-2, a silica slurry slow stirring device 5-3, a stirring blade 5-4, and a silica slurry level meter 5-5.

[0033] When the present invention is implemented, the silica slurry density and moisture content detection and signal transmission device 5-2 transmits the density and moisture content signals to the silica slurry preparation system automatic controller 8 and the mixing station batching system, which is used to determine whether the silica slurry moisture content is qualified and accurately calculate the silica slurry usage under the specified silica ash dosage and deduct the water consumption of the concrete production mix ratio.

[0034] When the present invention is implemented, the silica slurry level meter 5-5 transmits the level signal to the silica slurry preparation system automatic controller 8 and the concrete mixing system to determine whether to prepare silica slurry and produce concrete.

[0035] When the present invention is implemented; the function of the automatic controller 8 of the silica ash slurry preparation system is to complete the preparation of silica ash slurry according to the set ratio and stirring control parameters, monitor the silica ash slurry density and moisture content detection and signal transmission device 5-2, the moisture content, level data and system working time parameters fed back by the silica ash slurry level meter 5-5 to determine whether to return or replenish the slurry and redisperse it, determine whether to prepare the next batch of silica ash slurry and add it to the silica ash temporary storage tank, record, query and export the slurry batching data, moisture content data and return and replenishment data.

[0036] When the present invention is implemented; the high-speed dispersion device 3 has a high-speed motor 3-3 with a frequency conversion controller and a high-speed jet cavitation dispersion device 3-4. The high-speed motor 3-3 can realize the rotation speed of the high-speed jet cavitation dispersion device 3-4 from 0 to a constant speed within 5s-60s, and the constant speed is 500-20000r / min. The blade shear rate of the high-speed jet cavitation dispersion device is higher than 20m / s, the blade and paddle shear rate is higher than 14m / s, and the constant speed time is 0.5-10min.

[0037] When the present invention is implemented, the high-speed dispersing device is single-axis or multi-axis, and each axis is single-blade or multi-blade.

[0038] When the present invention is implemented, the high-speed jet cavitation dispersion device 3-4 has a maximum slurry flow rate of not less than 14 m / s, forming a cavitation dispersion effect to achieve the dissociation and dispersion of silica fume agglomerates.

[0039] The working principle of this specific implementation is:

[0040] (1) The equipment is turned on, and the silica ash and dispersion liquid are measured according to the input batching parameters, and the materials are fed into the high-speed disperser. The high-speed disperser starts to increase the speed to a constant speed (such as 3000r / min) according to the speed increase system. After maintaining the constant speed for a certain period of time (such as 5min), the speed is reduced to 0r / min, and the slurry valve and 1# slurry pump are opened to pump the slurry into the temporary storage tank. After the slurry is pumped, the slurry valve and 1# slurry pump are closed, and the slurry is pumped in reverse until the feedback signal of the slurry level meter in the temporary storage tank indicates that the slurry volume reaches more than 80% of the total volume of the temporary storage tank, and the control system stops the slurry making operation.

[0041] (2) The moisture content of mortar is detected and the moisture content data is transmitted to the automatic controller. When the automatic controller determines that the moisture content deviates from the preset value (such as ≤±5%), the moisture content data is transmitted to the concrete production control system. The production control system calculates the production mix ratio according to the parameters. The production control system controls the No. 2 mortar pump, mortar valve, silica mortar metering scale, and metering discharge valve to complete the metering of silica mortar and discharge it to the mixer.

[0042] (3) When the automatic controller determines that the moisture content deviates from the preset value (e.g. ≤±5%), the mortar valve is closed, the return valve is opened, and the No. 2 mortar pump is started. After all the silica ash slurry that exceeds the tolerance is returned to the disperser, the mortar valve is closed, the return valve is closed, the No. 2 mortar pump is closed, the silica ash or dispersion liquid metering scale is started, the silica ash or dispersion liquid is calculated and added, and the silica ash or dispersion liquid is re-dispersed and pumped into the temporary storage tank, and the moisture content is tested and feedback controlled again until the moisture content is ≤ the agreed value (e.g. ≤±5%).

[0043] (4) When the feedback signal from the material level sensor shows that the slurry volume has dropped to a specified lower limit (eg, 30%), the next round of dispersed slurry making and filling is started.

[0044] (5) When the automatic controller determines that the storage time of the slurry in the mortar tank is higher than the preset time (e.g. ≥0.5d), the mortar valve is closed, the return valve is opened, and the No. 2 mortar pump is started. After all the silica ash slurry stored for a long time is returned to the disperser, the mortar valve is closed, the return valve is closed, the No. 2 mortar pump is closed, and the slurry is re-dispersed and pumped into the temporary storage tank.

[0045] The beneficial effects of the present invention are:

[0046] 1. By setting up a high-speed pre-dispersed silicon temporary storage tank and using a reasonable control system and control parameters, the problem of large difference in working rhythm between the existing concrete mixing system and the high-speed pre-dispersed silicon mortar dispersion system can be effectively solved.

[0047] 2. By setting up a pre-dispersed mortar return device, combined with the control system and parameter settings, the particles in the high-speed pre-dispersed silica mortar that have been dispersed but have been stationary for a long time are agglomerated and dispersed again to solve the negative impact of concrete caused by the agglomerated silica mortar that has been stationary for a long time.

[0048] 3. By setting up the moisture content detection of pre-dispersed mortar and directly connecting the moisture content data to the mix control system of the mixing station to recalculate the production mix according to the measured value, or when the moisture content fluctuates greatly, through the return material replenishment device and control mechanism, combined with the control system and parameter settings, the silica ash with large fluctuations in moisture content of the silica ash mortar is secondary formulated, which solves the problem of production mix accuracy caused by the fluctuation of moisture content of silica ash mortar, and realizes the continuous, stable and accurate production and preparation of high-speed pre-dispersed silica ash mortar concrete.

[0049] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high-speed pre-dispersed silica mortar preparation system for concrete, characterized in that; The system comprises: a silica ash metering bin (1), a dispersion liquid metering bin (2), a high-speed dispersion device (3), a No. 1 mortar pump (4), a temporary storage tank (5), a No. 2 mortar pump (6), a silica ash mortar metering scale (7) and a silica ash mortar preparation system automatic controller (8); a discharge valve A (1-1) is provided below the silica ash metering bin (1), a discharge valve B (2-1) is provided below the dispersion liquid metering bin (2), the outlets of the silica ash metering bin (1) and the dispersion liquid metering bin (2) are connected to the high-speed dispersion device (3) via the discharge valve A (1-1) and the discharge valve B (2-1) respectively, a mortar valve (3-1) is provided at the bottom of the high-speed dispersion device (3), the mortar valve (3-1) is connected to the No. 1 mortar pump (4), the end of the pipeline of the No. 1 mortar pump (4) is connected to the temporary storage tank (5) via a slurry conveying pipe, and a No. 2 solenoid valve (2-1) is provided at the bottom of the temporary storage tank (5). 5-1), the output end of the 2# solenoid valve (5-1) is connected to the 2# mortar pump (6), and the output end of the 2# mortar pump (6) is respectively connected to the pipeline with the return slurry valve (3-2) and the mortar metering valve (7-1) to connect the high-speed dispersion device (3) and the silica slurry metering scale (7); the silica slurry metering scale (7) is provided with a slurry discharge valve (7-2) below, and is connected to the concrete mixer through the pipeline, and the above components are connected to the silica slurry preparation system automatic controller (8) through the signal line; the temporary storage tank (5) has a silica slurry density and moisture content detection and signal transmission device (5-2), a silica slurry slow stirring device (5-3), a stirring blade (5-4), and a silica slurry level meter (5-5); the high-speed dispersion device (3) has a high-speed motor (3-3) with a frequency conversion controller and a high-speed jet cavitation dispersion device (3-4).

2. A high-speed pre-dispersed silica mortar preparation system for concrete according to claim 1, characterized in that; The silica ash slurry density and moisture content detection and signal transmission device (5-2) transmits the density and moisture content signals to the silica ash slurry preparation system automatic controller (8) and the mixing station batching system, so as to determine whether the silica ash slurry moisture content is qualified and accurately calculate the silica ash slurry usage at the specified silica ash dosage and deduct the water usage of the concrete production mix ratio.

3. A high-speed pre-dispersed silica mortar preparation system for concrete according to claim 1, characterized in that; The silica ash slurry level meter (5-5) transmits a level signal to the silica ash slurry preparation system automatic controller (8) and the concrete mixing system, so as to determine whether to prepare silica ash slurry and produce concrete.

4. A high-speed pre-dispersed silica mortar preparation system for concrete according to claim 1, characterized in that; The function of the automatic controller (8) of the silica ash slurry preparation system is to complete the preparation of the silica ash slurry according to the set proportion and stirring control parameters, monitor the silica ash slurry density and moisture content detection and signal transmission device (5-2), the moisture content, material level data fed back by the silica ash slurry level meter (5-5) and the time parameters of the system operation to determine whether to return or replenish the slurry and redisperse it, determine whether to prepare the next batch of silica ash slurry and add it to the silica ash temporary storage tank, record, query and export the slurry batching data, moisture content data and return and replenishment data.

5. A high-speed pre-dispersed silica mortar preparation system for concrete according to claim 1, characterized in that; The high-speed motor (3-3) can realize the speed of the high-speed jet cavitation dispersion device (3-4) increasing from 0 to a constant speed within 5s-60s, and the constant speed is 500-20000r / min. The blade shear rate of the high-speed jet cavitation dispersion device is higher than 20m / s, the blade and blade shear rate is higher than 14m / s, and the constant speed time is 0.5-10min.

6. A high-speed pre-dispersed silica mortar preparation system for concrete according to claim 1, characterized in that; The high-speed dispersion device (3) is single-shaft or multi-shaft, and each shaft is single-blade or multi-blade.

7. A high-speed pre-dispersed silica mortar preparation system for concrete according to claim 1, characterized in that; The working process of the system is: (1) The equipment is turned on, and the silica ash and dispersion liquid are measured according to the input batching parameters, and the materials are fed into the high-speed dispersion device. The high-speed dispersion device starts to increase the speed to a constant speed according to the speed increase system, and then decreases the speed to 0r / min after maintaining the constant speed for a certain period of time. The slurry valve and 1# slurry pump are opened to pump the slurry into the temporary storage tank. After the slurry is pumped, the slurry valve and 1# slurry pump are closed, and the slurry is pumped in reverse until the feedback signal of the slurry level meter in the temporary storage tank indicates that the slurry volume reaches more than 80% of the total volume of the temporary storage tank, and the control system stops the slurry making operation; (2) Mortar moisture content: Detect the mortar moisture content parameters and transmit the moisture content data to the automatic controller. When the automatic controller determines that the moisture content deviates from the preset value, it transmits the moisture content data to the concrete production control system. The production control system calculates the production mix ratio according to the parameters. The production control system controls the No. 2 mortar pump, mortar valve, silica mortar metering scale, and metering discharge valve to complete the metering of silica mortar and discharge it to the mixer. (3) When the automatic controller determines that the moisture content deviates from the preset value, the mortar valve is closed, the return valve is opened, and the No. 2 mortar pump is started. After all the silica ash mortar that exceeds the tolerance is returned to the disperser, the mortar valve is closed, the return valve is closed, the No. 2 mortar pump is closed, the silica ash or dispersion liquid metering scale is started, the silica ash or dispersion liquid is calculated and added, and the silica ash or dispersion liquid is re-dispersed and pumped into the temporary storage tank, and the moisture content is tested and feedback controlled again until the moisture content is ≤ the agreed value; (4) When the feedback signal from the material level sensor shows that the slurry volume has dropped to the specified lower limit, the next round of dispersed slurry making and filling is started; (5) When the automatic controller determines that the storage time of the slurry in the mortar tank is higher than the preset time, the mortar valve is closed, the return valve is opened, and the No. 2 mortar pump is started. After all the silica ash slurry stored for a long time is returned to the disperser, the mortar valve is closed, the return valve is closed, and the No. 2 mortar pump is closed. The slurry is dispersed again and then pumped into the temporary storage tank.

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