CN115159955B - High-plasticity high-water permeability high-pressure grouting slurry and manufacturing method thereof - Google Patents
High-plasticity high-water permeability high-pressure grouting slurry and manufacturing method thereof Download PDFInfo
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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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/04—Clay; Kaolin
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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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
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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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/1324—Recycled material, e.g. tile dust, stone waste, spent refractory material
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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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/16—Lean materials, e.g. grog, quartz
Abstract
The invention discloses high-pressure grouting slurry with high plasticity and high water permeability and a manufacturing method thereof, and relates to the technical field of ceramics. The high-pressure grouting slurry with high plasticity and high water permeability comprises the following raw materials of illite Li Danlei clay, sericite clay, black mud, water-washed kaolin, sericite raw ore sand, feldspar and waste porcelain powder. According to the invention, the high-pressure grouting slurry is added with the illite Li Danlei clay and the sericite clay, so that the high-pressure grouting slurry has the properties of high plasticity, high slurry suction speed and good water permeability, and the problems of soft inside and hard outside of a formed green body and cracking of the green body during drying shrinkage caused by high-pressure grouting by adopting the existing slurry can be solved.
Description
Technical Field
The invention relates to the technical field of ceramics, in particular to high-plasticity high-water permeability high-pressure grouting slurry and a manufacturing method thereof.
Background
Ceramic sanitary products are generally formed by grouting, and at present, high-pressure grouting is increasingly applied to sanitary ware forming, the high-pressure grouting forming is actually a filtering process, a porous plastic mold is used as a filtering material, particles of slurry move to a working surface of the mold and are sequentially deposited in the grouting process, a green body with certain strength is formed, and the porous plastic mold provides a channel for water removal and gives the product a certain shape.
Along with the increasing application of high-pressure grouting in sanitary ware forming, corresponding high-pressure equipment is also increased, but the performance of the existing high-pressure grouting slurry is difficult to match with the high-pressure equipment, so that the blank receiving rate and the efficiency are low, and the loss of a sanitary ware manufacturing enterprise is caused.
At present, most of high-pressure grouting sizing agents are improved on the basis of a common intersection line grouting molding formula, but the problems of slow sizing suction and hardness of the inside and the outside of a molded blank body usually occur on the basis of the common intersection line grouting molding formula, so that the blank body is easy to crack in the drying process, the blank yield is low, and meanwhile, the problems of high sintering defects and the like caused by dark cracking after sintering are solved. In order to further solve the problem of slow slurry suction, a plurality of ceramic enterprises generally reduce black mud with slow slurry suction in the existing formula, kaolin, pyrophyllite or raw ore sand with fast slurry suction is added, and the black mud in the formula system is reduced due to the fact that the black mud has high plasticity, the plasticity of the pyrophyllite and the raw ore sand is poor, the plasticity of the slurry is low, blank cracking is easy to cause when the slurry is injected at high pressure, and the problem of low blank yield is also caused.
Disclosure of Invention
Aiming at the problems of the background technology, the invention aims to provide high-pressure grouting slurry with high plasticity and high water permeability, which is characterized in that the high-pressure grouting slurry has the properties of high plasticity, high slurry suction speed and good water permeability by adding the i Li Danlei clay and the sericite clay into the high-pressure grouting slurry, so that the problems of soft inside and hard outside of a formed green body and cracking of the green body during drying shrinkage caused by adopting the existing slurry for high-pressure grouting can be solved.
The invention further aims to provide a preparation method of the high-pressure grouting slurry with high plasticity and high water permeability, which is used for preparing the high-pressure grouting slurry with high plasticity and high water permeability, so that the drainage effect of the high-pressure grouting slurry can be further improved, and the problem of drying cracking caused by large internal and external humidity difference during high-pressure grouting is better solved.
To achieve the purpose, the invention adopts the following technical scheme:
the high-pressure grouting slurry with high plasticity and high water permeability comprises the following raw materials of illite Li Danlei clay, sericite clay, black mud, water-washed kaolin, sericite raw ore sand, feldspar and waste porcelain powder.
Further, the high-pressure grouting slurry comprises, by mass, 20-30 parts of illite clay, 20-30 parts of sericite clay, 10-15 parts of black mud, 15-25 parts of water-washed kaolin, 20-30 parts of sericite raw ore sand, 10-20 parts of feldspar, 4-6 parts of waste porcelain powder and 0-3 parts of magnesia.
Further, the chemical components of the high-pressure grouting slurry comprise, by mass, 62-67% of silicon oxide, 20-24% of aluminum oxide, 0-0.5% of calcium oxide, 0-0.5% of magnesium oxide, 3-4% of potassium oxide, 0.5-1.5% of sodium oxide and the balance of loss on ignition.
The preparation method of the high-pressure grouting slurry with high plasticity and high water permeability is used for preparing the high-pressure grouting slurry with high plasticity and high water permeability, and comprises the following steps of:
(1) Ball milling black mud, sericite raw ore sand, waste porcelain powder and magnesia mud according to a formula, placing ball milling slurry into a stirring tank after ball milling is finished, and sequentially adding illite clay, sericite clay, water-washed kaolin and feldspar for dispersion stirring;
(2) And (3) placing the slurry subjected to dispersion stirring in the step (1) into a mixing tank for mixing, sequentially sieving, removing iron and adjusting parameters, and ageing the obtained slurry to obtain the high-pressure grouting slurry.
Further, the operation method of the step (1) is as follows: ball milling is carried out on black mud, sericite raw ore sand, waste porcelain powder and magnesia mud according to a formula until the fineness of ball milling slurry is 2-5% of the screen residue of a 325-mesh screen, then the ball milling slurry is put into a stirring tank, the volume of the ball milling slurry accounts for 35-45% of the volume of the stirring tank, illite clay, sericite clay, water-washed kaolin and feldspar are sequentially added into the stirring tank for dispersion stirring, and the stirring time is 4-8H.
Further, in the step (2), a 100-120 mesh screen is used for sieving.
Further, in the step (2), the aging is performed for 10 to 20 days.
Furthermore, in the step (1), water glass and a water reducer are added for debugging in the stirring process of the stirring pool.
The technical scheme has the following beneficial effects:
1. according to the technical scheme, the high-pressure grouting slurry is added with the illite clay and the sericite clay, the illite clay and the sericite clay are high-plasticity clay with a sheet crystal structure, which is obtained by hammer machining of raw ore (namely illite and sericite), when the slurry is subjected to high-pressure grouting, water in the slurry is sucked away from a high-pressure model under high pressure to form a blank layer, at the moment, the illite clay and the sericite clay have the characteristic of a sheet crystal structure, and play a skeleton-like supporting and fixing role in the slurry grouting process, so that the plasticity of the high-pressure grouting slurry is effectively improved, the problem of poor plasticity of the existing high-pressure grouting slurry is solved, and the illite clay and the sericite clay are high-plasticity, are obtained by fine machining of the raw ore, and have the properties of high suction speed and good water permeability of stone, and play a skeleton role in combination with the sheet structure when the slurry is injected, and the problem of cracking and shrinkage of the blank body can be effectively prevented when the slurry is dried.
2. The problems of slow slurry absorption and hardness of the inside and the outside of a formed green body are caused by unsmooth water drainage, so that the water in the green body is difficult to remove, and the inside and the outside of the green body are hard due to the fact that the illite Li Danlei clay and sericite clay have a flaky crystal structure and serve as frameworks in high-pressure grouting slurry to play a supporting role in the inside, so that the water in the inside is easier to discharge, and the green body can be kept in a shape and is not soft after being supported by the frameworks, and the problems of the existing high-pressure grouting slurry, namely the inside soft and the outside hard after being combined due to directional arrangement caused by rapid arrangement of particles in the 10-30min grouting period of high-pressure grouting can be effectively solved.
Detailed Description
The technical scheme of the invention is further described below with reference to the specific embodiments.
The high-pressure grouting slurry with high plasticity and high water permeability comprises the following raw materials of illite Li Danlei clay, sericite clay, black mud, water-washed kaolin, sericite raw ore sand, feldspar and waste porcelain powder.
It is worth pointing out that illite clay in this technical scheme is the high plasticity clay that has the lamellar crystal structure that adopts illite to pass through hammer breaker finishing to get, sericite clay is the high plasticity clay that has lamellar crystal structure that the sericite passes through hammer breaker finishing to get, uses the plasticity appearance to detect illite clay and sericite clay's plasticity respectively, and the detection obtains illite clay and sericite clay's plasticity number value and is 1.0 ~ 1.1 (can directly read on equipment and obtain plasticity number value), and in general the plasticity number value of kaolin class raw materials is 0.7 ~ 0.8, from this it can be seen that illite clay and sericite clay's plasticity number value is very much higher Yu Gaoling clay class raw materials. The illite clay slurry, the sericite clay slurry and the water-washed kaolin slurry are prepared by respectively adding the same water to the illite clay slurry, the sericite clay slurry and the water-washed kaolin slurry, respectively absorbing slurry for 60min, respectively forming a blank layer with a certain blank thickness, pouring out the residual slurry, and then forming a layer of water film on the surface layer, calculating the time for water film disappearance (namely, the time for water film drying), wherein the calculated time for water film disappearance of the illite clay slurry and the sericite clay slurry is 3-4 seconds, and the time for water film disappearance of the water-washed kaolin slurry is 4-5 seconds, so that the slurry absorption speeds of the illite clay, the sericite clay and the water-washed kaolin clay are higher, and the slurry absorption speeds of the illite clay and the sericite clay are slightly higher than those of the kaolin clay, and the water-washed kaolin clay is a raw material with quick slurry absorption known in the art, so that the illite clay and the sericite clay have the advantages of quick slurry absorption and high water permeability.
Specifically, the chemical composition of illite clay comprises 64.52% by mass of SiO 2 22.93% AlO 3 1.11% Fe 2 O 3 0.01% TiO 2 0.27% CaO, 0.01% MgO, 3.48% K 2 O, 0.41% Na 2 O and a loss on ignition of 7.26%;
the chemical composition of sericite clay comprises 64.32% of SiO 2 23.09% AlO 3 1.18% Fe 2 O 3 0.01% TiO 2 0.58 percent of CaO, 0.03 percent of MgO and 4.53 percent of K 2 O, 0.68% Na 2 O and 5.58% loss on ignition.
According to the technical scheme, the high-pressure grouting slurry is added with the illite clay and the sericite clay, the illite clay and the sericite clay are high-plasticity clay with a sheet crystal structure, which is obtained by hammer machining of raw ore (namely illite and sericite), when the slurry is subjected to high-pressure grouting, water in the slurry is sucked away from a high-pressure model under high pressure to form a blank layer, at the moment, the illite clay and the sericite clay have the characteristic of a sheet crystal structure, and play a skeleton-like supporting and fixing role in the slurry grouting process, so that the plasticity of the high-pressure grouting slurry is effectively improved, the problem of poor plasticity of the existing high-pressure grouting slurry is solved, and the illite clay and the sericite clay are high-plasticity, are obtained by fine machining of the raw ore, and have the properties of high suction speed and good water permeability of stone, and play a skeleton role in combination with the sheet structure when the slurry is injected, and the problem of cracking and shrinkage of the blank body can be effectively prevented when the slurry is dried.
Further, the problems of slow slurry suction and soft inside and hard outside of the formed blank body are mainly caused by unsmooth water drainage, so that water in the blank body is difficult to remove, and the inner part of the blank body is soft and hard outside due to directional arrangement and combination of particles, which are generated in the 10 th-30 min grouting period of high-pressure grouting, are effectively solved due to the fact that the illite Li Danlei clay and sericite clay have a flaky crystal structure and are used as a framework in high-pressure grouting slurry, so that the inner water can be discharged more easily, the blank body can be kept in a shape after the framework is supported, the blank body is not soft, and the problem that the inner part of the blank body is soft and hard outside after the directional arrangement and combination of particles is generated in the 10 th-30 min grouting period of high-pressure grouting is further solved.
Further illustrating, the high-pressure grouting slurry comprises, by mass, 20-30 parts of illite clay, 20-30 parts of sericite clay, 10-15 parts of black mud, 15-25 parts of water-washed kaolin, 20-30 parts of sericite raw ore sand, 10-20 parts of feldspar, 4-6 parts of waste porcelain powder and 0-3 parts of magnesia clay.
According to the technical scheme, the consumption of black mud with slow slurry suction is reduced in the high-pressure grouting slurry, 20-30 parts of illite clay and 20-30 parts of sericite clay are added, the consumption of illite clay and sericite clay is close to half, illite clay and sericite clay can be better filled between the black mud and kaolin, so that the effect of supporting and fixing can be effectively exerted, meanwhile, the high water permeability of illite clay and sericite clay is utilized, the high-pressure grouting slurry has the performances of high plasticity, high slurry suction speed and good water permeability, and when in high-pressure grouting, water is extruded into a die under the action of high pressure, so that a blank body is formed, the high-pressure grouting slurry with strong water permeability and high plasticity is beneficial to the high-pressure grouting mode, and the problems of high cracking and low yield due to soft outside in the blank body caused by slow slurry suction and poor plasticity can be solved.
Specifically, in the raw material formula of the high-pressure grouting slurry, the water-washed kaolin and sericite raw ore sand are filled granular raw materials of a sand mold, the feldspar is a flux, the magnesia mud has a fluxing effect, and the strength of a blank body can be improved by adding a small amount of black mud, but the addition amount of the black mud is not too high, so that the high-pressure grouting slurry is easy to suck slowly.
Further illustratively, the high pressure grouting slurry comprises, by mass, 62-67% of silicon oxide, 20-24% of aluminum oxide, 0-1.5% of calcium oxide, 0-1.5% of magnesium oxide, 3-4% of potassium oxide, 0.5-2% of sodium oxide and the balance of loss on ignition.
The preparation method of the high-pressure grouting slurry with high plasticity and high water permeability is used for preparing the high-pressure grouting slurry with high plasticity and high water permeability, and comprises the following steps of:
(1) Ball milling black mud, sericite raw ore sand, waste porcelain powder and magnesia mud according to a formula, placing ball milling slurry into a stirring tank after ball milling is finished, and sequentially adding illite clay, sericite clay, water-washed kaolin and feldspar for dispersion stirring;
(2) And (3) placing the slurry subjected to dispersion stirring in the step (1) into a mixing tank for mixing, sequentially sieving, removing iron and adjusting parameters, and ageing the obtained slurry to obtain the high-pressure grouting slurry.
It is worth to say that when preparing high-pressure grouting slurry, firstly, hard raw materials (black slurry, sericite raw ore sand, waste porcelain powder and magnesia slurry) are subjected to ball milling and fine grinding treatment, so that the problems that the movement of slurry coarse particles is slowly concentrated at a double-sided slurry interlayer and the innermost side of single-sided slurry during rapid grouting can be effectively solved, meanwhile, drainage is facilitated, and the problem that the formed blank body is soft inside and hard outside is avoided. In the step (2), coarse particles are further removed by using a screen after mixing, so that the problem of external hardness and internal softness after grouting is further solved.
Further illustratively, the method of operation of step (1) is as follows: ball milling is carried out on black mud, sericite raw ore sand, waste porcelain powder and magnesia mud according to a formula until the fineness of ball milling slurry is 2-5% of the screen residue of a 325-mesh screen, then the ball milling slurry is put into a stirring tank, the volume of the ball milling slurry accounts for 35-45% of the volume of the stirring tank, illite clay, sericite clay, water-washed kaolin and feldspar are sequentially added into the stirring tank for dispersion stirring, and the stirring time is 4-8H.
Further, in the step (2), a 100-120 mesh screen is used for sieving.
It is worth pointing out that the blank has the problems of external hardness and internal softness, and the places with more water are softer and the places with less water are hard due to the difference of water. Slurry particles are arranged in an oriented manner during high-pressure grouting, and under the action of kinetic energy given by pressurization, the slurry particles are subjected to the formula e=mv 2 The coarse particles are coarser and larger in mass, so that the movement speed of the coarse particles is slower, the coarse particles are at the innermost side, the coarse particles can block water from being discharged due to large volume, and therefore the blank body is hard and soft in the inside.
Further, in the step (2), the aging is performed for 10 to 20 days.
It is worth noting that the ageing time in the technical scheme is 10-20 days, through homogenization treatment for 10-20 days, flat-paddle stirring is adopted during ageing, slow stirring ageing is beneficial to stabilization of kinetic energy among slurry particles, internal stress caused by kinetic energy difference among particles can be reduced, so that the slurry particles are uniformly stressed when being pressed during grouting, the stress is minimum, the slurry sucking speed and the stability of high-pressure grouting slurry are beneficial to stabilization, the cracking problem caused by the internal stress among the slurry particles is solved, and therefore microcracks during molding can be effectively reduced, and the blank collecting rate is improved. If the aging time is lower, the grouting efficiency can be improved, but the aging time is shorter, the problem of microcrack of a blank formed by high-pressure grouting can be caused, the quality of the manufactured blank is low, and if the aging time exceeds 20 days, the thickness of the slurry is obviously reduced, so that the grouting efficiency is unfavorable. In turn, the aging time is limited to 10-20 days, which is favorable for stabilizing the slurry suction speed and the stability of high-pressure grouting slurry, and solves the cracking problem caused by stress among slurry particles, thereby improving the blank yield.
Further, in the step (1), sodium silicate and a water reducer are added for debugging in the stirring process of the stirring pool, and the water reducer can be sodium hexametaphosphate.
The technical scheme of the invention is further described below by combining specific examples and comparative examples.
Example 1
The high-pressure grouting slurry with high plasticity and high water permeability comprises, by mass, 20 parts of illite clay, 25 parts of sericite clay, 10 parts of black mud, 25 parts of water-washed kaolin, 20 parts of sericite raw ore sand, 18 parts of feldspar, 6 parts of waste porcelain powder and 2 parts of magnesia mud.
The preparation method of the high-pressure grouting slurry comprises the following steps:
(1) Ball milling black mud, sericite raw ore sand, waste porcelain powder and magnesia mud according to a formula until the fineness of ball milling slurry is 2% of the screen residue of a 325-mesh screen, then placing the ball milling slurry in a stirring tank, wherein the volume of the ball milling slurry is 40% of the volume of the stirring tank, sequentially adding illite clay, sericite clay, water-washed kaolin and feldspar into the stirring tank for dispersion stirring, wherein the stirring time is 6H, and adding water glass and a water reducer for debugging in the stirring process;
(2) And (3) placing the slurry subjected to dispersion stirring in the step (1) into a mixing tank for mixing, sequentially sieving, removing iron and adjusting parameters, and aging the obtained slurry for 10 days to obtain high-pressure grouting slurry, wherein a 120-mesh screen is adopted for sieving.
Example 2
The high-pressure grouting slurry with high plasticity and high water permeability comprises, by mass, 25 parts of illite clay, 26 parts of sericite clay, 13 parts of black mud, 18 parts of water-washed kaolin, 30 parts of sericite raw ore sand, 10 parts of feldspar and 4 parts of waste porcelain powder.
The preparation method of the high-pressure grouting slurry comprises the following steps:
(1) Ball milling black mud, sericite raw ore sand, waste porcelain powder and magnesia mud according to a formula until the fineness of ball milling slurry is 5% of the screen residue of a 325-mesh screen, placing the ball milling slurry in a stirring tank, wherein the volume of the ball milling slurry accounts for 35% of the volume of the stirring tank, sequentially adding illite clay, sericite clay, water-washed kaolin and feldspar into the stirring tank for dispersion stirring, wherein the stirring time is 4H, and adding water glass and a water reducer for debugging in the stirring process;
(2) And (3) placing the slurry subjected to dispersion stirring in the step (1) into a mixing tank for mixing, sequentially sieving, removing iron and adjusting parameters, and aging the obtained slurry for 15 days to obtain high-pressure grouting slurry, wherein a 100-120-mesh screen is adopted for sieving.
Example 3
The high-pressure grouting slurry with high plasticity and high water permeability comprises, by mass, 30 parts of illite clay, 20 parts of sericite clay, 10 parts of black mud, 22 parts of water-washed kaolin, 25 parts of sericite raw ore sand, 15 parts of feldspar, 5 parts of waste porcelain powder and 1 part of magnesia mud.
The preparation method of the high-pressure grouting slurry comprises the following steps:
(1) Ball milling black mud, sericite raw ore sand, waste porcelain powder and magnesia mud according to a formula until the fineness of ball milling slurry is 5% of the screen residue of a 325-mesh screen, placing the ball milling slurry in a stirring tank, wherein the volume of the ball milling slurry is 40% of the volume of the stirring tank, sequentially adding illite clay, sericite clay, water-washed kaolin and feldspar into the stirring tank for dispersion stirring, wherein the stirring time is 8H, and adding water glass and a water reducer for debugging in the stirring process;
(2) And (3) placing the slurry subjected to dispersion stirring in the step (1) into a mixing tank for mixing, sequentially sieving, removing iron and adjusting parameters, and aging the obtained slurry for 16 days to obtain high-pressure grouting slurry, wherein a 100-mesh screen is adopted for sieving.
Example 4
The high-pressure grouting slurry with high plasticity and high water permeability comprises, by mass, 28 parts of illite clay, 22 parts of sericite clay, 15 parts of black mud, 15 parts of water-washed kaolin, 22 parts of sericite raw ore sand, 20 parts of feldspar, 4 parts of waste porcelain powder and 3 parts of magnesia mud.
The preparation method of the high-pressure grouting slurry comprises the following steps:
(1) Ball milling black mud, sericite raw ore sand, waste porcelain powder and magnesia mud according to a formula until the fineness of ball milling slurry is 5% of the screen residue of a 325-mesh screen, placing the ball milling slurry in a stirring tank, wherein the volume of the ball milling slurry is 40% of the volume of the stirring tank, sequentially adding illite clay, sericite clay, water-washed kaolin and feldspar into the stirring tank for dispersion stirring, wherein the stirring time is 8H, and adding water glass and a water reducer for debugging in the stirring process;
(2) And (3) placing the slurry subjected to dispersion stirring in the step (1) into a mixing tank for mixing, sequentially sieving, removing iron and adjusting parameters, and aging the obtained slurry for 18 days to obtain high-pressure grouting slurry, wherein a 120-mesh screen is adopted for sieving.
Example 5
The high-pressure grouting slurry with high plasticity and high water permeability comprises, by mass, 22 parts of illite clay, 30 parts of sericite clay, 12 parts of black mud, 21 parts of water-washed kaolin, 28 parts of sericite raw ore sand, 11 parts of feldspar and 6 parts of waste porcelain powder.
The preparation method of the high-pressure grouting slurry comprises the following steps:
(1) Ball milling black mud, sericite raw ore sand, waste porcelain powder and magnesia mud according to a formula until the fineness of ball milling slurry is 5% of the screen residue of a 325-mesh screen, placing the ball milling slurry in a stirring tank, wherein the volume of the ball milling slurry is 40% of the volume of the stirring tank, sequentially adding illite clay, sericite clay, water-washed kaolin and feldspar into the stirring tank for dispersion stirring, wherein the stirring time is 6H, and adding water glass and a water reducer for debugging in the stirring process;
(2) And (3) placing the slurry subjected to dispersion stirring in the step (1) into a mixing tank for mixing, sequentially sieving, removing iron and adjusting parameters, and aging the obtained slurry for 20 days to obtain high-pressure grouting slurry, wherein a 120-mesh screen is adopted for sieving.
Specifically, the high-pressure grouting slurries prepared in examples 1 to 5 above were grouting the same porous injection mold to form a green body by high-pressure grouting, drying and high-temperature firing the green body, and observing whether the generated green body has defects of external hardness and internal softness, cracking of the dried green body and the fired green body, and the results are shown in the following table 1:
TABLE 1 detection results for examples 1-5
As can be seen from Table 1, the high-pressure grouting slurry prepared in examples 1 to 5 is used for high-pressure grouting, the obtained green body has no problems of internal softness and external hardness, and meanwhile, the green body has no defects of cracking and the like after drying and firing, so that the high-pressure grouting slurry prepared in examples 1 to 5 can effectively prevent the cracking problems during drying shrinkage and firing of the green body, and the blank yield can be greatly improved.
The technical principle of the present invention is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the invention and should not be taken in any way as limiting the scope of the invention. Other embodiments of the invention will be apparent to those skilled in the art from consideration of this specification without undue burden.
Claims (7)
1. The high-pressure grouting slurry with high plasticity and high water permeability is characterized by comprising, by mass, 20-30 parts of illite clay, 20-30 parts of sericite clay, 10-15 parts of black mud, 15-25 parts of water-washed kaolin, 20-30 parts of sericite raw ore sand, 10-20 parts of feldspar, 4-6 parts of waste porcelain powder and 0-3 parts of magnesia;
the plasticity values of the illite Li Danlei clay and the sericite clay are 1.0-1.1;
the chemical composition of the illite clay comprises 64.52 percent of SiO by mass percent 2 22.93% AlO 3 1.11% Fe 2 O 3 0.01% TiO 2 0.27% CaO, 0.01% MgO, 3.48% K 2 O, 0.41% Na 2 O and a loss on ignition of 7.26%;
the chemical composition of sericite clay comprises 64.32% of SiO 2 23.09% AlO 3 1.18% Fe 2 O 3 0.01% TiO 2 0.58 percent of CaO, 0.03 percent of MgO and 4.53 percent of K 2 O, 0.68% Na 2 O and 5.58% loss on ignition.
2. The high-pressure grouting slurry with high plasticity and high water permeability according to claim 1, wherein the chemical components of the high-pressure grouting slurry comprise, by mass, 62-67% of silicon oxide, 20-24% of aluminum oxide, 0-0.5% of calcium oxide, 0-0.5% of magnesium oxide, 3-4% of potassium oxide and 0.5-1.5% of sodium oxide, and the balance of loss on ignition.
3. A method for preparing high-pressure grouting slurry with high plasticity and high water permeability, which is characterized by comprising the following steps of:
(1) Ball milling black mud, sericite raw ore sand, waste porcelain powder and magnesia mud according to a formula, placing ball milling slurry into a stirring tank after ball milling is finished, and sequentially adding illite clay, sericite clay, water-washed kaolin and feldspar for dispersion stirring;
(2) And (3) placing the slurry subjected to dispersion stirring in the step (1) into a mixing tank for mixing, sequentially sieving, removing iron and adjusting parameters, and ageing the obtained slurry to obtain the high-pressure grouting slurry.
4. A method for preparing high-pressure grouting slurry with high plasticity and high water permeability according to claim 3, wherein the operation method of the step (1) is as follows: ball milling is carried out on black mud, sericite raw ore sand, waste porcelain powder and magnesia mud according to a formula until the fineness of ball milling slurry is 2-5% of the screen residue of a 325-mesh screen, then the ball milling slurry is put into a stirring tank, the volume of the ball milling slurry accounts for 35-45% of the volume of the stirring tank, illite clay, sericite clay, water-washed kaolin and feldspar are sequentially added into the stirring tank for dispersion stirring, and the stirring time is 4-8H.
5. The method for producing high-pressure grouting slurry with high plasticity and high water permeability according to claim 4, wherein in the step (2), a 100-120 mesh screen is used for sieving.
6. The method for producing high-pressure grouting slurry having high plasticity and high water permeability according to claim 3, wherein in the step (2), the aging is performed for 10 to 20 days.
7. The method for preparing high-pressure grouting slurry with high plasticity and high water permeability according to claim 4, wherein in the step (1), water glass and a water reducing agent are added for adjustment in the stirring process of the stirring tank.
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