CN112573867A - Method and device for preparing filling slurry - Google Patents

Method and device for preparing filling slurry Download PDF

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Publication number
CN112573867A
CN112573867A CN202011530468.3A CN202011530468A CN112573867A CN 112573867 A CN112573867 A CN 112573867A CN 202011530468 A CN202011530468 A CN 202011530468A CN 112573867 A CN112573867 A CN 112573867A
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tailing
metering
bin
water
slurry
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CN112573867B (en
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高利晶
冯来宏
高健勋
周全超
李继升
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Huaneng Coal Technology Research Co Ltd
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Huaneng Coal Technology Research Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/04—Supplying or proportioning the ingredients
    • B28C7/0481—Plant for proportioning, supplying or batching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C9/00—General arrangement or layout of plant
    • B28C9/002—Mixing systems, i.e. flow charts or diagrams; Making slurries; Involving methodical aspects; Involving pretreatment of ingredients; Involving packaging
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00724—Uses not provided for elsewhere in C04B2111/00 in mining operations, e.g. for backfilling; in making tunnels or galleries

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)

Abstract

The invention provides a filling slurry preparation method and device, and relates to the field of goaf filling. The filling slurry preparation method comprises the following steps: mixing the tailing slurry and water, and enabling the water to completely submerge the tailing to obtain tailing suspension; measuring the volume and the mass of the tailing suspension, and calculating the mass of the tailing and the mass of the water in the tailing suspension by combining the density of the tailing and the density of the water; adding tailings and a cementing material into the tailing suspension to enable the tailing, the water and the cementing material to meet a target mass ratio; and fully stirring to obtain the filling slurry with the target mass ratio. The filling slurry preparation method can accurately measure the respective mass of the tailings and the water in the tailing suspension formed by mixing the tailing slurry and the water, so that the mass of the tailings to be supplemented can be obtained according to the target mass ratio, and the mass ratio of each material in the filling slurry and the concentration of the filling slurry can be accurately controlled; and all tail mortar does not need to be dried, so that the energy consumption is low and the cost is low.

Description

Method and device for preparing filling slurry
Technical Field
The invention relates to the technical field of goaf filling, in particular to a filling slurry preparation method and device.
Background
When the paste or paste-like filling slurry is used for filling a mined-out area of a mine, the high or low concentration of the filling slurry can cause pipe blockage and pipe explosion accidents, so that the normal production is influenced, and the concentration of the filling slurry must be accurately controlled.
In the prior art, the material for preparing the filling slurry mainly comprises tailings, a cementing material and water. However, since drying a large amount of tailings to obtain tailings requires a large amount of energy and is costly, the tailings, which are not the tailings but are primarily dehydrated by a thickener, are used to prepare the filling slurry at the construction site. However, the tail mortar still contains much water, and when the tail mortar is conveyed from the tail mortar bin to the stirring bin to prepare the filling slurry, the concentration fluctuation of the tail mortar is large, so that the difference between the concentration of the prepared filling slurry and the target concentration is large, and pipe plugging and pipe explosion accidents are easily caused during use.
Disclosure of Invention
The first purpose of the invention is to provide a filling slurry preparation method, which is used for solving the technical problems that the concentration of the filling slurry prepared by the prior art is larger than the target concentration, and pipe blockage and pipe explosion accidents are easily caused during use.
The preparation method of the filling slurry provided by the invention comprises the following steps:
s100, mixing tailing slurry and water, and enabling the water to completely submerge the tailing to obtain tailing suspension;
s200, measuring the volume and the mass of the tailing suspension, and calculating the mass of the tailing and the mass of water in the tailing suspension by combining the density of the tailing and the density of the water;
s300, adding tailings and a cementing material into the tailing suspension to enable the tailings, the water and the cementing material to meet a target mass ratio;
and S400, fully stirring to obtain filling slurry with the target mass ratio.
Further, step S100 includes: firstly, measuring the maximum concentration of the tail mortar conveyed to the stirring bin from the tail mortar bin, and then, assuming that the concentration of the tail mortar is the maximum concentration, preparing the tail mortar suspension.
Further, step S100 includes: discharging tail mortar to a first weighing belt by using a first feeder at a slurry outlet of a tail mortar bin, weighing the mass of the tail mortar by using the first weighing belt, and conveying the tail mortar into a stirring bin;
calculating the required water quality according to the maximum concentration of the tail mortar, and conveying water with target quality into the stirring bin by using a water conveying pipe at a water outlet of the water bin;
and stirring the tailing slurry and water in a stirring bin to obtain the tailing slurry.
Further, step S200 includes: and measuring the liquid level of the tailing suspension by using a liquid level meter, calculating the volume of the tailing suspension, and weighing the mass of the tailing suspension by using a total balance.
The filling slurry preparation method provided by the invention can produce the following beneficial effects:
according to the filling slurry preparation method provided by the invention, firstly, the tailing slurry and water are mixed, and the tailing slurry can be completely submerged by the water, so that the volume of tailing suspension can be accurately measured; and after the mass of the tailing suspension is measured, the density of the tailing and the density of water can be combined, and the respective mass of the tailing and the water in the tailing suspension is calculated according to the condition that the total mass of the tailing and the water in the tailing suspension is equal to the mass of the tailing suspension and the total volume of the tailing and the water in the tailing suspension is equal to the total volume of the tailing suspension; according to the target mass ratio and the mass of water, the total mass of the tailings can be calculated, and the mass of the tailings existing in the tailing suspension is subtracted to obtain the mass of the tailings needing to be supplemented to the tailing suspension; according to the target mass ratio and the mass of water, the mass of the required cementing material can be calculated, the required tailings are supplemented into the tailing turbid liquid, the required cementing material is added, and after sufficient stirring, the filling slurry with the target mass ratio is obtained, the mass ratio of the filling slurry is accurate, so that the concentration of the filling slurry is accurate, and pipe plugging and pipe explosion accidents are not easily caused during use.
In addition, the filling slurry preparation method provided by the invention can accurately measure the respective mass of the tailings and the water in the tailing suspension formed by mixing the tailing slurry and the water, so that the mass of the tailings to be supplemented can be obtained according to the target mass ratio, all the tailing slurry does not need to be dried, only a small part of the tailing slurry needs to be dried to supplement the required tailings, and the filling slurry preparation method has the advantages of less energy consumption and low cost while realizing accurate control of the concentration of the filling slurry.
The second purpose of the invention is to provide a filling slurry preparation device, which is used for solving the technical problems that the concentration of the filling slurry prepared by the prior art is greatly different from the target concentration, and pipe blockage and pipe explosion accidents are easily caused during use.
The invention provides a filling slurry preparation device which comprises a tailing slurry bin, a cementing material bin, a water bin, a tailing slurry bin and a stirring bin, wherein the tailing slurry bin is used for containing tailing slurry, the cementing material bin is used for containing a cementing material, the water bin is used for containing water, the tailing slurry bin is used for containing tailing slurry, and the stirring bin is used for stirring the filling material to obtain filling slurry;
the filling slurry preparation apparatus further includes five metering units, respectively, a first metering unit, a second metering unit, a third metering unit, a fourth metering unit, and a fifth metering unit, the third metering unit being used after the first metering unit and the second metering unit and before the fourth metering unit and the fifth metering unit; the first metering component is used for weighing the mass of the tailing slurry and conveying the tailing slurry into the stirring bin, the second metering component is used for metering the mass of water and conveying the water into the stirring bin, the third metering component is used for weighing the mass of the tailing suspension in the stirring bin and metering the volume of the tailing suspension in the stirring bin, the fourth metering component is used for weighing the mass of the tailing to be compensated and conveying the tailing suspension into the stirring bin, and the fifth metering component is used for weighing the mass of the cementing material and conveying the cementing material into the stirring bin.
Further, the first metering component comprises a first weighing belt, and the first weighing belt is arranged below a slurry outlet of the tailing slurry bin and is used for weighing tailing slurry and conveying the tailing slurry into the stirring bin; or the first metering assembly comprises a first bottom-discharge metering scale and a first belt, the first bottom-discharge metering scale is positioned below the slurry outlet of the tailing slurry bin, the first belt is positioned below the first bottom-discharge metering scale, the first bottom-discharge metering scale is used for weighing tailing slurry and discharging the tailing slurry to the first belt, and the first belt is used for conveying the tailing slurry into the stirring bin;
the fourth metering component comprises a second weighing belt, and the second weighing belt is arranged below the sand outlet of the tailing bin and is used for weighing tailing and conveying the tailing into the stirring bin; or the fourth metering assembly comprises a second bottom-discharge metering scale and a second belt, the second bottom-discharge metering scale is positioned below the sand outlet of the tailing bin, the second belt is positioned below the second bottom-discharge metering scale, the second bottom-discharge metering scale is used for weighing the tailing sand and discharging the tailing sand to the second belt, and the second belt is used for conveying the tailing sand into the stirring bin;
the fifth metering component comprises a third weighing belt, and the third weighing belt is arranged below the discharge hole of the gelled material bin and is used for weighing gelled materials and conveying the gelled materials into the stirring bin; or, the fifth metering component comprises a third bottom-discharge metering scale and a third belt, the third bottom-discharge metering scale is located below a discharge port of the gelled material bin, the third belt is located below the third bottom-discharge metering scale, the third bottom-discharge metering scale is used for weighing gelled materials and discharging the gelled materials to the third belt, and the third belt is used for conveying the gelled materials to the stirring bin.
Further, the second metering component comprises a water conveying pipe and a flowmeter, one end of the water conveying pipe is connected to the water outlet of the water bin, and the other end of the water conveying pipe can output water into the stirring bin; the flowmeter is arranged on the water delivery pipe and used for measuring the flow of the water delivered into the stirring bin.
Further, the third metering assembly comprises a total scale and a liquid level meter, wherein the total scale is arranged below the stirring bin and is used for weighing the mass of the filling materials in the stirring bin in real time; the liquid level meter is arranged in the stirring bin and used for measuring the volume of the filling materials in the stirring bin.
Further, a first feeding machine is arranged at a slurry outlet of the tailing slurry bin;
a second feeding machine is arranged at a sand outlet of the tail sand bin;
and a discharge port of the gelled material bin is provided with a third feeder.
Further, the filling slurry preparation device further includes a controller, and the metering assembly, the first feeder, the second feeder, and the third feeder are all connected to the controller, and the controller can control the on and off of the metering assembly and receive a signal of the metering assembly, and can also control the on and off of the first feeder, the second feeder, and the third feeder.
The filling slurry preparation device provided by the invention can produce the following beneficial effects:
when the filling slurry preparation device is used, the first metering component can be used for weighing the tailing slurry from the tailing slurry bin and conveying the tailing slurry into the stirring bin, and the second metering component is used for metering water from the water bin and conveying the water into the stirring bin, so that tailing slurry suspension formed by mixing the tailing slurry and the water is obtained; then, weighing the mass of the tailing suspension in the stirring bin and the volume of the tailing suspension in the stirring bin by using a third metering component; the result of the third metering component is combined with the density of the tailings and the density of water, the respective masses of the tailings and the water in the tailing suspension can be calculated according to the fact that the total mass of the tailings and the water in the tailing suspension is equal to the mass of the tailing suspension, and the total volume of the tailings and the water in the tailing suspension is equal to the total volume of the tailing suspension; meanwhile, the mass of the needed cementing material can be calculated according to the target mass ratio and the mass of water, so that the fifth metering component can be used for weighing the cementing material from the cementing material bin and conveying the cementing material into the stirring bin; and (3) fully stirring all the materials in the stirring bin to obtain the filling slurry with the target mass ratio. Namely, the filling slurry preparation device provided by the invention is used for preparing the filling slurry with accurate mass ratio, so that the concentration of the filling slurry is also accurate, and pipe blockage and pipe explosion accidents are not easy to cause during use.
In addition, by using the filling slurry preparation device provided by the invention, the respective mass of the tailings and the water in the tailing suspension formed by mixing the tailing slurry and the water can be accurately measured, so that the mass of the tailings to be supplemented can be obtained according to the target mass ratio, all the tailing slurry does not need to be dried, only a small part of the tailing slurry needs to be dried to supplement the required tailings, and even if the filling slurry is prepared by using the filling slurry preparation device provided by the invention, the concentration of the filling slurry is accurately controlled, and meanwhile, the consumed energy is less and the cost is low.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a flow chart of a method of preparing a fill slurry according to the present invention;
fig. 2 is a schematic structural view of a filling slurry preparation apparatus according to the present invention.
Description of reference numerals:
110-tailing slurry bin; 120-a first feeder; 130-a first weighing belt;
210-a water sump; 220-water conveying pipe; 230-a switch valve; 240-a flow meter;
310-stirring bin; 320-total scale; 330-a liquid level meter;
410-tail sand silo; 420-a second feeder; 430-a second bottom discharge weigher; 440-a second belt;
510-a cementitious material bin; 520-a third feeder; 530-a third weighing belt; 600-a controller.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
This embodiment provides a method for preparing a filling slurry, as shown in fig. 1, including the steps of:
s100, mixing the tailing slurry and water, and enabling the water to completely submerge the tailing to obtain tailing suspension.
Specifically, in this embodiment, the maximum concentration of the tail mortar delivered from the tail mortar bin 110 to the stirring bin 310 may be measured first, and then the tail mortar suspension may be prepared assuming that the concentration of the tail mortar is the maximum concentration. By the operation, the tailing concentration of the tailing slurry is unstable, so that the ratio of the tailing to water in the tailing suspension is inevitably smaller than the target ratio, and only the tailing needs to be supplemented subsequently. For example: a tailings suspension with a tailings concentration of 70% can be prepared, since it is recognized that water in this concentration of tailings suspension can completely submerge the tailings.
More specifically, the first feeder 120 of the slurry outlet of the tailing slurry bin 110 can be used to discharge tailing slurry to the first weighing belt 130, and the first weighing belt 130 weighs the tailing slurry and conveys it into the stirring bin 310; calculating the required water quality according to the maximum concentration of the tail mortar, and conveying water with target quality into the stirring bin 310 by using the water conveying pipe 220 at the water outlet of the water bin 210; the tailing slurry and water are stirred in the stirring bin 310 to obtain a tailing suspension.
S200, measuring the volume and the mass of the tailing suspension, and calculating the mass of the tailing and the mass of the water in the tailing suspension by combining the density of the tailing and the density of the water.
Specifically, in this embodiment, the liquid level of the tailing suspension may be measured by using the liquid level meter 330, the volume of the tailing suspension may be calculated, and the total scale 320 may be used to weigh the tailing suspension.
S300, adding the tailings and the cementing material into the tailing suspension to enable the tailing, the water and the cementing material to meet the target mass ratio.
And S400, fully stirring to obtain filling slurry with the target mass ratio.
According to the filling slurry preparation method provided by the embodiment, firstly, the tailing slurry and water are mixed, and the tailing slurry can be completely submerged by the water, so that the volume of tailing suspension can be accurately measured; and after the mass of the tailing suspension is measured, the density of the tailing and the density of water can be combined, and the respective mass of the tailing and the water in the tailing suspension is calculated according to the condition that the total mass of the tailing and the water in the tailing suspension is equal to the mass of the tailing suspension and the total volume of the tailing and the water in the tailing suspension is equal to the total volume of the tailing suspension; according to the target mass ratio and the mass of water, the total mass of the tailings can be calculated, and the mass of the tailings existing in the tailing suspension is subtracted to obtain the mass of the tailings needing to be supplemented to the tailing suspension; according to the target mass ratio and the mass of water, the mass of the required cementing material can be calculated, the required tailings are supplemented into the tailing turbid liquid, the required cementing material is added, and after sufficient stirring, the filling slurry with the target mass ratio is obtained, the mass ratio of the filling slurry is accurate, so that the concentration of the filling slurry is accurate, and pipe plugging and pipe explosion accidents are not easily caused during use.
In addition, the filling slurry preparation method provided by the invention can accurately measure the respective mass of the tailings and the water in the tailing suspension formed by mixing the added tailing slurry and the water, so that the mass of the tailings to be supplemented can be obtained according to the target mass ratio, all the tailing slurry does not need to be dried, only a small part of the tailing slurry needs to be dried to supplement the required tailings, and the filling slurry preparation method has the advantages of low energy consumption and low cost while realizing the accurate control of the concentration of the filling slurry.
The following target mass ratio of the prepared tailings, water and the cementing material is 7: 2: the filling slurry with the concentration of 80% is taken as an example to further illustrate the preparation method of the filling slurry provided by the invention:
the density of a certain ore tailing is rho1＝2.33g/cm3Density of water is rho2＝1.00g/cm3The average water content of the used tail mortar is 20 percent, namely the average concentration of the tail sand in the tail mortar is 80 percent, and the minimum concentration is cmin75% by weight, maximum concentration cmax＝85％。
If the mass concentration of the tailings in the tailing slurry is directly calculated as 80%, 1000kg of tailing slurry is placed in the stirring bin 310, and then 28.6kg of water and 114.3kg of cementing material are added, so that filling slurry with the concentration of 80% can be theoretically prepared. However, since the concentration of the tailings in the tailing slurry is 75% to 85% in practice, the concentration of the filler slurry to be prepared in practice is 75.63% to 84.38%, the concentration accuracy is low, and when the filler slurry is used, a pipe blockage or a pipe explosion is likely to occur.
On the other hand, if the method provided in this embodiment is used, it is assumed that the concentration of tailings in the tailings slurry is 85% of the maximum concentration, a tailings suspension having a concentration of 70% is prepared, 1000kg of tailings slurry is placed in the stirring bin 310, and then m is countedTail mortarcmax/(mWater (W)+mTail mortar) 70% of the total amount of the compounds, wherein mTail mortarMass of tail mortar, mWater (W)214.29kg of water to be filled into the stirring bin 310 can be calculated according to the mass of the water; the volume V of the tailing suspension can be accurately measured by the level gauge 330 as 751.92L, the mass m of the tailing suspension can be accurately measured by the gross balance 320 as 1214.29kg, and the mass m of the tailing in the tailing suspension in the stirring bin 310 is set as m1Mass of water m2And then the two satisfy:
Figure BDA0002851873700000081
Figure BDA0002851873700000082
Figure BDA0002851873700000083
the calculation can obtain: m is1＝810.00kg，m2404.29 kg. That is, the tailing m is also required to be put into the stirring bin 310 from the tailing bin 4102×7/2－m1605.01kg, cement m was added from cement silo 510 to stirring silo 3102X 1/2 ═ 202.15 kg. In summary, by using the method for preparing filling slurry according to the present embodiment, stable filling slurry of a target mass ratio can be obtained.
The embodiment also provides a filling slurry preparation device, as shown in fig. 2, the filling slurry preparation device includes a tailing slurry bin 110, a cementitious material bin 510, a water bin 210, a tailing slurry bin 410, and a stirring bin 310, the tailing slurry bin 110 is used for holding tailing slurry, the cementitious material bin 510 is used for holding cementitious material, the water bin 210 is used for holding water, the tailing slurry bin 410 is used for holding tailing, and the stirring bin 310 is used for stirring filling material to obtain filling slurry; the filling slurry preparation apparatus further includes five metering units, which are a first metering unit, a second metering unit, a third metering unit, a fourth metering unit, and a fifth metering unit, respectively, the third metering unit being used after the first metering unit and the second metering unit and before the fourth metering unit and the fifth metering unit; the first metering component is used for weighing the mass of the tailing slurry and conveying the tailing slurry into the stirring bin 310, the second metering component is used for metering the mass of water and conveying the water into the stirring bin 310, the third metering component is used for weighing the mass of tailing suspension in the stirring bin 310 and metering the volume of the tailing suspension in the stirring bin 310, the fourth metering component is used for weighing the mass of tailing to be compensated and conveying the tailing suspension into the stirring bin 310, and the fifth metering component is used for weighing the mass of the cementing material and conveying the cementing material into the stirring bin 310.
When the filling slurry preparation apparatus provided in this embodiment is used, the first metering device may be used to weigh the tailings from the tailings silo 110 and deliver the tailings to the stirring silo 310, and the second metering device may be used to meter the water from the water silo 210 and deliver the water to the stirring silo 310, so as to obtain a tailings suspension obtained by mixing the tailings and the water; then, weighing the mass of the tailing suspension in the stirring bin 310 and the volume of the tailing suspension in the stirring bin 310 by using a third metering component; the third metering component is used for calculating the total mass of the tailings and the water in the tailing suspension according to the fact that the total mass of the tailings and the water in the tailing suspension is equal to the mass of the tailing suspension and the total volume of the tailings and the water in the tailing suspension is equal to the total volume of the tailing suspension, the respective masses of the tailings and the water in the tailing suspension can be calculated, the required total mass of the tailings can be calculated according to the target mass ratio and the mass of the water, and the mass of the tailings existing in the tailing suspension is subtracted, so that the mass of the tailings needing to be supplemented to the tailing suspension can be obtained, and therefore the fourth metering component can be used for weighing the tailings needing to be compensated from the tailing bin 410 and conveying the tailings into the stirring bin 310; meanwhile, the mass of the required cementing material can be calculated according to the target mass ratio and the mass of water, so that the fifth metering component can be used for weighing the cementing material from the cementing material bin 510 and conveying the cementing material into the stirring bin 310; after the materials in the stirring bin 310 are fully stirred, the filling slurry with the target mass ratio can be obtained. That is, by using the filling slurry preparation device provided by the embodiment, the prepared filling slurry is accurate in mass ratio, so that the concentration of the filling slurry is also accurate, and pipe blockage and pipe explosion accidents are not easily caused during use.
In addition, by using the filling slurry preparation device provided by the embodiment, the respective masses of the tailings and the water in the tailing suspension formed by mixing the tailing slurry and the water can be accurately measured, so that the mass of the tailings needing to be supplemented can be obtained according to the target mass ratio, all the tailing slurry does not need to be dried, and only a small part of the tailing slurry needs to be dried to supplement the required tailings.
Specifically, in the embodiment, the first metering assembly includes a first weighing belt 130, and the first weighing belt 130 is disposed below the slurry outlet of the tailing slurry bin 110, and is used for weighing and conveying the tailing slurry into the stirring bin 310. The first weighing belt 130 plays a role of weighing and conveying at the same time, and the integration of functions is good.
It should be noted that in other embodiments of the present application, the first metering assembly may also take other forms, such as: the first metering assembly comprises a first bottom-discharge metering scale and a first belt, the first bottom-discharge metering scale is located below a slurry outlet of the tail mortar bin 110, the first belt is located below the first bottom-discharge metering scale, the first bottom-discharge metering scale is used for weighing tail mortar and discharging the tail mortar to the first belt, and the first belt is used for conveying the tail mortar to the stirring bin 310.
Specifically, in this embodiment, the second metering component includes a water pipe 220 and a flow meter 240, one end of the water pipe 220 is connected to the water outlet of the water bin 210, and the other end of the water pipe can output water into the stirring bin 310; the flow meter 240 is disposed on the water pipe 220 and is used for measuring the flow rate of the water conveyed into the stirring bin 310. Through the metering result of the flow meter 240, the mass of the water delivered into the stirring bin 310 can be calculated.
Specifically, in this embodiment, the second metering assembly further includes an on-off valve 230, the on-off valve 230 is disposed in the water pipe 220, and the on-off valve 230 is located upstream of the flow meter 240 along the conveying direction of the water.
Specifically, in the present embodiment, the third metering assembly includes a total scale 320 and a liquid level meter 330, the total scale 320 is disposed below the stirring bin 310, and is used for weighing the mass of the filling material in the stirring bin 310 in real time; the liquid level meter 330 is disposed in the stirring bin 310 and is used for measuring the volume of the filling material in the stirring bin 310. The liquid level is measured by the liquid level meter 330, and the volume of the tailing suspension can be calculated by combining the bottom area of the stirring bin 310.
Specifically, in the present embodiment, the fourth metering assembly includes a second bottom-discharge metering scale 430 and a second belt 440, the second bottom-discharge metering scale 430 is located below the sand outlet of the tailings silo 410, the second belt 440 is located below the second bottom-discharge metering scale 430, the second bottom-discharge metering scale 430 is used for weighing and discharging tailings to the second belt 440, and the second belt 440 is used for conveying the tailings into the stirring silo 310.
It should be noted that in other embodiments of the present application, the fourth metering assembly may also take other forms, such as: the fourth metering component comprises a second weighing belt, the second weighing belt is arranged below the sand outlet of the tailing bin 410 and is used for weighing the tailing and conveying the tailing into the stirring bin 310; or alternatively.
Specifically, in the present embodiment, the fifth metering assembly includes a third weighing belt 530, and the third weighing belt 530 is disposed below the discharge port of the cement bin 510 for weighing the cement and conveying the cement into the stirring bin 310.
It should be noted that, in other embodiments of the present application, the fifth metering assembly may also take other forms, such as: the fifth metering assembly comprises a third bottom-discharge metering scale and a third belt, the third bottom-discharge metering scale is located below the discharge port of the cementing material bin 510, the third belt is located below the third bottom-discharge metering scale, the third bottom-discharge metering scale is used for weighing the cementing material and discharging the cementing material to the third belt, and the third belt is used for conveying the cementing material to the stirring bin 310.
Specifically, in the present embodiment, as shown in fig. 2, the slurry outlet of the tailing slurry bin 110 is provided with a first feeder 120; a second feeder 420 is arranged at a sand outlet of the tailing bin 410; the discharge port of the gel material bin 510 is provided with a third feeder 520.
In this embodiment, the filling slurry preparation apparatus further includes a controller 600, the metering assembly, the first feeder 120, the second feeder 420, and the third feeder 520 are all connected to the controller 600, the controller 600 can control the on and off of the metering assembly and receive a signal of the metering assembly, and the controller 600 can also control the on and off of the first feeder 120, the second feeder 420, and the third feeder 520.
Specifically, the controller 600 can receive the mass signal weighed by the first weighing belt 130, and can control the on and off of the first feeding machine 120 and the first weighing belt 130; the controller 600 can receive the flow signal measured by the flow meter 240 and can control the on and off of the switching valve 230 and the flow meter 240; the controller 600 can receive the mass signal weighed by the total scale 320 and the liquid level information measured by the liquid level meter 330, and can calculate the volume of the tailing suspension according to the liquid level information; the controller 600 may receive the mass signal weighed by the second bottom-discharge weigher 430 and may control the on and off of the second feeder 420, the second bottom-discharge weigher 430, and the second belt 440; the controller 600 is also capable of receiving a mass signal weighed by the third weighing belt 530 and may control the third feeder 520 and the third weighing belt 530 to be turned on and off.
It should be noted that the implementation of the above functions of the controller 600 is a mature prior art, and therefore, the detailed description thereof is omitted here.
Finally, it is further noted that, herein, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to the embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A method for preparing filling slurry is characterized by comprising the following steps:
s100, mixing tailing slurry and water, and enabling the water to completely submerge the tailing to obtain tailing suspension;
s200, measuring the volume and the mass of the tailing suspension, and calculating the mass of the tailing and the mass of water in the tailing suspension by combining the density of the tailing and the density of the water;
s300, adding tailings and a cementing material into the tailing suspension to enable the tailings, the water and the cementing material to meet a target mass ratio;
and S400, fully stirring to obtain filling slurry with the target mass ratio.
2. The method of preparing filler slurry according to claim 1, wherein step S100 includes: the method comprises the steps of firstly measuring the maximum concentration of the tail mortar conveyed to a stirring bin (310) by a tail mortar bin (110), and then preparing the tail mortar suspension on the assumption that the concentration of the tail mortar is the maximum concentration.
3. The method of preparing filler slurry according to claim 2, wherein step S100 includes: discharging the tailing mortar to a first weighing belt (130) by using a first feeder (120) at a mortar outlet of a tailing mortar bin (110), weighing the mass of the tailing mortar by the first weighing belt (130) and conveying the tailing mortar into a stirring bin (310);
calculating the required water quality according to the maximum concentration of the tail mortar, and conveying water with target quality into the stirring bin (310) by using a water conveying pipe (220) at a water outlet of the water bin (210);
and stirring the tailing slurry and water in a stirring bin (310) to obtain the tailing slurry.
4. The filler slurry preparation method according to any one of claims 1 to 3, wherein step S200 includes: the liquid level of the tailings suspension is measured using a level meter (330) and the volume of the tailings suspension is calculated, and the mass of the tailings suspension is weighed using a gross scale (320).
5. The filling slurry preparation device is characterized by comprising a tailing slurry bin (110), a cementing material bin (510), a water bin (210), a tailing slurry bin (410) and a stirring bin (310), wherein the tailing slurry bin (110) is used for containing tailing slurry, the cementing material bin (510) is used for containing a cementing material, the water bin (210) is used for containing water, the tailing slurry bin (410) is used for containing tailing, and the stirring bin (310) is used for stirring a filling material to obtain a filling slurry;
the filling slurry preparation apparatus further includes five metering units, respectively, a first metering unit, a second metering unit, a third metering unit, a fourth metering unit, and a fifth metering unit, the third metering unit being used after the first metering unit and the second metering unit and before the fourth metering unit and the fifth metering unit; the first metering component is used for weighing the mass of the tailing slurry and conveying the tailing slurry into the stirring bin (310), the second metering component is used for metering the mass of water and conveying the water into the stirring bin (310), the third metering component is used for weighing the mass of the tailing suspension in the stirring bin (310) and metering the volume of the tailing suspension in the stirring bin (310), the fourth metering component is used for weighing the mass of the tailing to be compensated and conveying the tailing suspension into the stirring bin (310), and the fifth metering component is used for weighing the mass of the cementing material and conveying the cementing material into the stirring bin (310).
6. The filling slurry preparation apparatus according to claim 5, wherein the first metering assembly includes a first weighing belt (130), the first weighing belt (130) being disposed below a slurry outlet of the tailing slurry silo (110) for weighing and conveying the tailing slurry into the stirring silo (310); or the first metering assembly comprises a first bottom-discharge metering scale and a first belt, the first bottom-discharge metering scale is positioned below the slurry outlet of the tailing slurry bin (110), the first belt is positioned below the first bottom-discharge metering scale, the first bottom-discharge metering scale is used for weighing tailing slurry and discharging the tailing slurry to the first belt, and the first belt is used for conveying the tailing slurry into the stirring bin (310);
the fourth metering component comprises a second weighing belt, and the second weighing belt is arranged below the sand outlet of the tailing bin (410) and is used for weighing and conveying the tailing into the stirring bin (310); or the fourth metering assembly comprises a second bottom-discharge metering scale (430) and a second belt (440), the second bottom-discharge metering scale (430) is positioned below the sand outlet of the tailings bin (410), the second belt (440) is positioned below the second bottom-discharge metering scale (430), the second bottom-discharge metering scale (430) is used for weighing tailings and discharging the tailings to the second belt (440), and the second belt (440) is used for conveying the tailings into the stirring bin (310);
the fifth metering component comprises a third weighing belt (530), the third weighing belt (530) is arranged below the discharge hole of the cementing material bin (510) and is used for weighing the cementing material and conveying the cementing material into the stirring bin (310); or, the fifth metering component comprises a third bottom-discharge metering scale and a third belt, the third bottom-discharge metering scale is located below a discharge port of the cementing material bin (510), the third belt is located below the third bottom-discharge metering scale, the third bottom-discharge metering scale is used for weighing the cementing material and discharging the cementing material to the third belt, and the third belt is used for conveying the cementing material to the stirring bin (310).
7. The filling slurry preparation apparatus according to claim 6, wherein the second metering means includes a water pipe (220) and a flow meter (240), one end of the water pipe (220) is connected to a water outlet of the water silo (210), and the other end thereof is capable of outputting water into the stirring silo (310); the flowmeter (240) is arranged on the water conveying pipe (220) and used for metering the flow of the water conveyed into the stirring bin (310).
8. The filling slurry preparation apparatus according to claim 7, wherein said third metering assembly includes a total scale (320) and a level meter (330), said total scale (320) being disposed below said stirring tank (310) for weighing the mass of the filling material in said stirring tank (310) in real time; the liquid level meter (330) is arranged on the stirring bin (310) and used for metering the volume of filling materials in the stirring bin (310).
9. The filling slurry preparation apparatus according to claim 8, wherein a slurry outlet of the tailing slurry silo (110) is provided with a first feeder (120);
a second feeder (420) is arranged at a sand outlet of the tailing bin (410);
and a discharge hole of the gelled material bin (510) is provided with a third feeding machine (520).
10. The filling slurry preparation device according to claim 9, further comprising a controller (600), the metering assembly, the first material feeder (120), the second material feeder (420), and the third material feeder (520) each being connected to the controller (600), the controller (600) being capable of controlling the metering assembly to be turned on and off and receiving a signal of the metering assembly, the controller (600) also being capable of controlling the first material feeder (120), the second material feeder (420), and the third material feeder (520) to be turned on and off.
CN202011530468.3A 2020-12-22 2020-12-22 Method and device for preparing filling slurry Active CN112573867B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5452954A (en) * 1993-06-04 1995-09-26 Halliburton Company Control method for a multi-component slurrying process
CN108590748A (en) * 2018-05-22 2018-09-28 长沙矿山研究院有限责任公司 Tailings reconstruction slurry filling system and technique
CN110030032A (en) * 2019-04-03 2019-07-19 长沙矿山研究院有限责任公司 The method that tailing slurry shunts partially dehydrated regulation filling slurry preparation concentration
CN111362649A (en) * 2020-03-20 2020-07-03 北京矿冶科技集团有限公司 Tailing filling slurry, additive thereof and method for improving filling compaction rate of metal mine goaf

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5452954A (en) * 1993-06-04 1995-09-26 Halliburton Company Control method for a multi-component slurrying process
CN108590748A (en) * 2018-05-22 2018-09-28 长沙矿山研究院有限责任公司 Tailings reconstruction slurry filling system and technique
CN110030032A (en) * 2019-04-03 2019-07-19 长沙矿山研究院有限责任公司 The method that tailing slurry shunts partially dehydrated regulation filling slurry preparation concentration
CN111362649A (en) * 2020-03-20 2020-07-03 北京矿冶科技集团有限公司 Tailing filling slurry, additive thereof and method for improving filling compaction rate of metal mine goaf

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