CN114559545A - Device and process for preparing magnetized water UHPC - Google Patents

Device and process for preparing magnetized water UHPC Download PDF

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Publication number
CN114559545A
CN114559545A CN202210191546.4A CN202210191546A CN114559545A CN 114559545 A CN114559545 A CN 114559545A CN 202210191546 A CN202210191546 A CN 202210191546A CN 114559545 A CN114559545 A CN 114559545A
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ceramic
uhpc
grinding
tank
sealing
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CN114559545B (en
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张鸣
沈彦奇
贾仁甫
李岩
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Yangzhou University
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Yangzhou University
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
    • B28C5/10—Mixing in containers not actuated to effect the mixing
    • B28C5/12—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers
    • B28C5/14—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers the stirrers having motion about a horizontal or substantially horizontal axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/10—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with one or a few disintegrating members arranged in the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/003—Methods for mixing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/003—Methods for mixing
    • B28C5/006—Methods for mixing involving mechanical aspects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
    • B28C5/0806—Details; Accessories
    • 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
    • B28C7/0007—Pretreatment of the ingredients, e.g. by heating, sorting, grading, drying, disintegrating; Preventing generation of dust
    • 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
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/04—Silica-rich materials; Silicates
    • C04B14/10—Clay
    • C04B14/106—Kaolin
    • 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
    • C04B28/02—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 containing hydraulic cements other than calcium sulfates
    • C04B28/04—Portland cements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Structural Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Food Science & Technology (AREA)
  • Dispersion Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Civil Engineering (AREA)
  • Crushing And Grinding (AREA)

Abstract

The invention discloses a device and a process for preparing magnetized water UHPC, which comprises the following steps: step 1: placing a first raw material of kaolin clay and ceramic grinding balls in a ceramic inner tank and sealing; and 2, step: wrapping the outer surface of the ceramic inner tank with a screen, fixing a built-in magnet and a grinding-assisted stirring plate, and then placing the ceramic inner tank into the ceramic outer tank; and step 3: injecting the second raw material into a ceramic outer tank, sealing the tank opening of the ceramic outer tank, and placing the ceramic outer tank on a roller ball mill; and 4, step 4: fixing an external magnet on an iron frame, and fixing the iron frame on a roller ball mill; and 5: operating a roller ball mill to mechanically activate the kaolin clay for 20 to 40 minutes; step 6: filling the third raw material into a ceramic outer tank, sealing, putting the ceramic outer tank on a roller ball mill again, continuously operating the roller ball mill for a preset time, and further grinding and mixing the first to third raw materials into a UHPC mixture under the action of a grinding-assisted stirring plate; and 7: pouring out, pouring and maintaining the UHPC mixture to obtain the magnetized water UHPC.

Description

Device and process for preparing magnetized water UHPC
Technical Field
The invention belongs to the field of building materials, and particularly relates to a device and a process for preparing magnetized water UHPC.
Background
Ultra-high performance concrete (UHPC) has excellent properties such as ultra-high mechanical property, durability, toughness and the like, and has been a research hotspot in the field of civil engineering since birth. However, the UHPC blend has high viscosity, which makes its preparation difficult. In order to realize ultrahigh performance, UHPC is extremely pursued in the aspects of raw material selection, preparation process, maintenance system, and the like, which makes it difficult to further improve the mechanical properties thereof by conventional methods. In addition, metakaolin which is one of UHPC admixtures is obtained by calcining kaolin at high temperature, so that the defects of high equipment technical requirement, high energy consumption and the like exist, and the high-grade metakaolin is relatively high in price because the high-grade metakaolin is also applied to other fields, so that the high-grade metakaolin is not beneficial to large-scale application in the field of building materials.
The invention patent application No. 2020116186222, Chinese invention, discloses a method for preparing UHPC cement, which is characterized in that recycled concrete fine aggregate and micropowder are ground by a grinder to obtain recycled UHPC micropowder, and the UHPC micropowder and an activator are uniformly stirred and mixed to obtain the recycled UHPC cement. The invention patent application No. 2019110395607, the Chinese invention, discloses a method for preparing UHPC material, which comprises the steps of mixing fly ash and water by a ball mill, mixing blast furnace slag, water and a dispersant by a ball mill, grinding tailings by a dry mill, mixing and stirring the three materials with a water reducing agent and steel fibers to obtain the green UHPC material.
The Chinese patent application No. 2020106099092 discloses a superplasticizer with alkyl chain as main chain, carboxylic acid or carboxylate side chain at the end, polyether side chain, polyalcohol amine side chain substituted by phosphoric acid or phosphorous acid at the end and other side chains, which comprehensively enhances the adhesive capacity to all gelled materials, thereby weakening the particle friction and reducing the UHPC blended viscosity. According to the Chinese patent application document with the application number of 2020105905655, a concrete viscosity reducer is researched by taking phthalic anhydride, a polyol polymer and a phosphorylation reagent as raw materials, and is used in UHPC with the water-to-gel ratio of 0.12-0.20, so that the viscosity of the UHPC is remarkably reduced, and the preparation and construction difficulty of the UHPC is reduced.
The Chinese patent application with application number 2021110829641 discloses a method for preparing high-activity metakaolin, which comprises mixing coal-based kaolin with water, stirring at high speed, crushing into particles, and treating at 600 deg.C to obtain high-activity metakaolin. The Chinese patent application with the application number of 2021101182191 discloses that after the kaolin is subjected to heat treatment and gas-solid separation for many times in a cyclone preheater, the kaolin is sent to a calcining furnace to be calcined to obtain high-activity metakaolin, and the energy consumption for preparing the metakaolin is reduced to a certain extent.
Although the prior art has made certain progress, the following problems still exist:
(1) in the aspect of UHPC preparation, research results mainly aim at reducing the viscosity of a UHPC mixture so as to reduce the preparation difficulty of the UHPC, but the research on the hydration activity of a UHPC raw material is not carried out, and how to fully improve the mechanical property of the UHPC is not correspondingly considered.
(2) The metakaolin is prepared without considering the use of low-grade kaolin, and is mainly prepared by adopting a calcining mode, so that high-grade natural resources and a large amount of energy consumption are still consumed.
Disclosure of Invention
The invention aims to provide a device and a process for preparing magnetized water UHPC (ultra high performance polycarbonate), which are used for preparing metakaolin and UHPC (ultra high performance polycarbonate) by using common kaolin clay, and solving the problems of difficult stirring and full development of UHPC strength during UHPC preparation.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a device for preparing magnetized water UHPC comprises a ceramic outer tank, a ceramic inner tank and a screen mesh which are arranged in the ceramic outer tank,
the ceramic outer tank is arranged on the drum-type ball mill, a plurality of discharge holes are formed in the surface of the ceramic inner tank, and the outer surface of the ceramic inner tank is wrapped by the screen.
Further, still include iron frame and a set of external magnet, iron frame fixes on the drum-type ball mill, a set of external magnet is fixed in on the iron frame and be located the outside of pottery outer tank, a set of external magnet includes the external arc magnet of two relative settings.
Further, still include a set of built-in magnet, a set of built-in magnet is fixed in between outer jar of pottery and the pottery inner tank, a set of built-in magnet includes two relative arrangement's built-in arc magnet.
Furthermore, the grinding-assisting stirring device further comprises four grinding-assisting stirring plates, wherein the four grinding-assisting stirring plates are respectively fixed at the end parts of the two oppositely arranged built-in arc-shaped magnets, a first bolt hole used for being fixed with the built-in arc-shaped magnets is formed in the surface of each grinding-assisting stirring plate, and at least one thin blade-shaped grinding hole is formed in the edge of each grinding-assisting stirring plate.
Further, still include a plurality of grinding balls, a plurality of grinding balls set up in the pottery inner tank.
And further, the sealing device also comprises two groups of sealing and fastening components, each group of sealing and fastening components comprises a sealing cover and a fastening triangular steel plate, the sealing cover of the first group of sealing and fastening components is used for sealing the port of the ceramic inner tank, the fastening triangular steel plate is provided with a fastening screw, the fastening triangular steel plate of the first group of sealing and fastening components is used for fastening the sealing cover of the first group of sealing and fastening components on the port of the ceramic inner tank, the sealing cover of the second group of sealing and fastening components is used for sealing the port of the ceramic outer tank, and the fastening triangular steel plate of the second group of sealing and fastening components is used for fastening the sealing cover of the second group of sealing and fastening components on the port of the ceramic outer tank.
The process for preparing the magnetized water UHPC by adopting the device for preparing the magnetized water UHPC comprises the following steps:
step 1: placing a first raw material of kaolin clay and ceramic grinding balls in a ceramic inner tank and sealing;
step 2: wrapping the outer surface of the ceramic inner tank with a screen, fixing a built-in magnet and a grinding-assisted stirring plate, and then placing the ceramic inner tank into the ceramic outer tank;
and 3, step 3: injecting a second raw material into a ceramic outer tank, sealing the tank opening of the ceramic outer tank, and placing the ceramic outer tank on a roller ball mill, wherein the second raw material comprises mixing water, a grinding-aid retarder sodium hexametaphosphate, a polycarboxylic acid water reducing agent and a viscosity reducer;
and 4, step 4: fixing an external magnet on an iron frame, placing the iron frame on the upper side and the lower side of the ceramic outer tank, and fixing the iron frame on a roller ball mill;
and 5: after the roller ball mill is operated to mechanically activate the kaolin clay for 20 to 40 minutes, powder of the kaolin clay enters the ceramic outer tank through a discharge hole and a screen on the ceramic inner tank;
step 6: filling the third raw material into a ceramic outer tank, sealing, putting the ceramic outer tank on a roller ball mill again, continuously operating the roller ball mill for a preset time, and further grinding and mixing the first to third raw materials into a UHPC mixture under the action of a grinding-assisted stirring plate;
and 7: pouring out, pouring and maintaining the UHPC mixture to obtain the magnetized water UHPC.
Further, the third raw material includes: portland cement of P.II 52.5 grade and above, SiO2Silica fume with content of more than 95 percent; quartz sand with the grain diameter not more than 1 mm.
Further, the mass ratio of the first to third raw materials is as follows: 30-40% of Portland cement with strength grade of P.II 52.5 or above, 5-7% of SiO2Silica fume with the content of more than 95 percent and kaolin clay with the content of 6 to 30 percent; 25-40% of quartz sand with the particle size not greater than 1 mm; 0.6 to 0.7 percent of polycarboxylate superplasticizer with water reducing rate of more than 40 percent; 1.0-2.0% of viscosity reducer; 0.5 to 1.0 percent of grinding-aid retarder sodium hexametaphosphate; 25 to 35 percent of mixing water.
Furthermore, the kaolin clay contains 50% or more of kaolin clay, and the charging amount of the kaolin clay during grinding is not more than 50% of the volume of the ceramic inner tank.
Compared with the prior art, the invention has the remarkable advantages that:
(1) by utilizing the characteristic that kaolin is easier to grind than other components in clay, after grinding and activating a common kaolin clay ball mill, particles mainly comprising metakaolin are firstly ground and pass through a screen to form a UHPC raw material, and the UHPC raw material and other UHPC raw materials are further ground and activated by a grinding-aid stirring plate, so that the UHPC strength is favorably improved.
(2) The surface of the ceramic inner tank and the iron frame are provided with the magnets, so that UHPC mixed water becomes magnetized water, and the strength of the UHPC is improved.
(3) In the process of levigating the raw materials, the grinding-assisted stirring plate uniformly stirs the raw materials, so that the problem of difficulty in preparing UHPC is solved.
Drawings
FIG. 1 is a perspective view of the apparatus of the present invention;
FIG. 2 is a cross-sectional view of the invention shown in FIG. 1A-A;
FIG. 3 is a schematic representation of the iron frame of the present invention patent;
FIG. 4 is a schematic view of the ceramic outer vessel of the present invention;
FIG. 5 is a schematic view of the ceramic inner vessel of the present invention;
FIG. 6 is a schematic view of an external magnet according to the present invention;
FIG. 7 is a schematic view of the seal cap of the present invention;
FIG. 8 is a schematic view of a fastening gusset of the present invention;
FIG. 9 is a schematic of the screen of the present invention;
FIG. 10 is a schematic view of a grinding and stirring aid plate according to the present invention;
FIG. 11 is a schematic view of the built-in magnet of the present invention;
FIG. 12 is a schematic view of the connection of the built-in magnet and the grinding-assisting stirring plate of the invention;
fig. 13 is a schematic diagram of the relative positions of the ceramic inner tank, the screen, the built-in magnet and the grinding-assisted stirring plate of the invention.
In the figure: 1. the device comprises a frame end bolt hole, 2 parts of a ceramic outer tank, 3 parts of a frame middle bolt hole, 4 parts of an external magnet, 5 parts of an iron frame, 6 parts of a sealing cover, 7 parts of a fastening triangular steel plate, 8 parts of a fastening screw rod, 9 parts of a grinding-assisted stirring plate, 10 parts of an internal magnet, 11 parts of an inner tank, 12 parts of a screen, 13 parts of a discharge hole, 14 parts of a grinding ball, 15 parts of a second bolt hole, 16 parts of a first bolt hole, 17 parts of a grinding hole, 18 parts of a third bolt hole and 19 parts of a fourth bolt hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 13, an apparatus for preparing magnetized water UHPC includes a ceramic outer tank 2, and a ceramic inner tank 11 and a mesh 12 disposed inside the ceramic outer tank 2,
the ceramic outer tank 2 is arranged on a roller ball mill, a plurality of discharge holes 13 are formed in the surface of the ceramic inner tank 11, and the outer surface of the ceramic inner tank 11 is wrapped with the screen 12.
Further, with reference to fig. 1, the ball mill further comprises an iron frame 5 and a set of external magnets 4, wherein the iron frame 5 is fixed on the ball mill, the set of external magnets 4 is fixed on the iron frame 5 and located outside the ceramic outer tank 2, and the set of external magnets 4 comprises two external arc magnets which are oppositely arranged.
Further, with reference to fig. 2 and 11-13, the ceramic tank further includes a set of internal magnets 10, the set of internal magnets 10 is fixed between the ceramic outer tank 2 and the ceramic inner tank 11, and the set of internal magnets 10 includes two internal arc magnets arranged oppositely.
Further, with reference to fig. 10 to 13, the grinding-assisting stirring device further comprises four grinding-assisting stirring plates 9, wherein the four grinding-assisting stirring plates 9 are respectively fixed at the end portions of two oppositely arranged built-in arc-shaped magnets, a first bolt hole 16 for fixing the built-in arc-shaped magnets is formed in the surface of each grinding-assisting stirring plate 9, at least one thin-blade-shaped grinding hole 17 is formed in the edge of each grinding-assisting stirring plate, and the grinding-assisting stirring plates are used for further stirring and grinding the first to third raw materials in the operation and rotation process of the machine.
Further, a plurality of grinding balls 14 are included, and the grinding balls 14 are arranged in the ceramic inner tank 11.
Further, with reference to fig. 1 and 7-8, the sealing device further includes two sets of sealing fastening assemblies, each set of sealing fastening assemblies includes a sealing cover 6 and a fastening triangular steel plate 7, the sealing cover 6 of the first set of sealing fastening assemblies is used for sealing the port of the ceramic inner tank 11, the fastening triangular steel plate 7 is provided with a fastening screw, the fastening triangular steel plate 7 of the first set of sealing fastening assemblies is used for fastening the sealing cover 6 of the first set of sealing fastening assemblies to the port of the ceramic inner tank 11, the sealing cover 6 of the second set of sealing fastening assemblies is used for sealing the port of the ceramic outer tank 2, and the fastening triangular steel plate 7 of the second set of sealing fastening assemblies is used for fastening the sealing cover 6 of the second set of sealing fastening assemblies to the port of the ceramic outer tank 2.
The process for preparing the magnetized water UHPC by adopting the device for preparing the magnetized water UHPC comprises the following steps:
step 1: placing a first raw material of kaolin clay and ceramic grinding balls 14 in a ceramic inner tank 11 and sealing;
step 2: wrapping the outer surface of the ceramic inner tank 11 with a screen 12, fixing a built-in magnet 10 and a grinding-assisted stirring plate 9, and then placing the ceramic inner tank into the ceramic outer tank 2;
and step 3: injecting a second raw material into the ceramic outer tank 2, sealing the tank opening of the ceramic outer tank 2, and placing the ceramic outer tank on a roller ball mill, wherein the second raw material comprises mixing water, grinding-aid retarder sodium hexametaphosphate, polycarboxylic acid water reducer and viscosity reducer;
and 4, step 4: fixing an external magnet 4 on an iron frame 5, placing the iron frame 5 on the upper side and the lower side of the ceramic outer tank 2 and fixing the ceramic outer tank on a roller ball mill;
and 5: after the roller ball mill is operated to mechanically activate the kaolin clay for 20 to 40 minutes, powder of the kaolin clay enters the ceramic outer tank 2 through a discharge hole 13 and a screen 12 on the ceramic inner tank 11;
and 6: the third raw material is filled into the ceramic outer tank 2, the ceramic outer tank is sealed and then is placed on the roller ball mill again, the roller ball mill continues to operate for a preset time, and the first to third raw materials are further ground and mixed into a UHPC mixture under the action of the grinding-assisted stirring plate 9;
and 7: pouring out, pouring and maintaining the UHPC mixture to obtain the magnetized water UHPC.
Further, the third raw material includes: portland cement of P.II 52.5 grade and above, SiO2Silica fume with content of more than 95 percent; quartz sand with the grain diameter not more than 1 mm.
Further, the mass ratio of the first to third raw materials is as follows: 30-40% of Portland cement with strength grade of P.II 52.5 or above, 5-7% of SiO2Silica fume with the content of more than 95 percent and kaolin clay with the content of 6 to 30 percent; 25-40% of quartz sand with the particle size not greater than 1 mm; 0.6 to 0.7 percent of polycarboxylate superplasticizer with water reducing rate of more than 40 percent; 1.0-2.0% of viscosity reducer; 0.5 to 1.0 percent of grinding-aid retarder sodium hexametaphosphate; 25 to 35 percent of mixing water.
Further, the kaolin clay contains more than 50% of kaolin clay, and the charging amount of the kaolin clay during grinding is not more than 50% of the volume of the ceramic inner tank 11; the mixing water is tap water; the screen 12 is a 200-mesh stainless steel net; the roller ball mill is a common roller ball mill sold in the market.
Example 1
The kaolin clay is a mixture of kaolin produced by coal sea kaolin factories in Yuokang areas of the same city and common clay, and the content of the kaolin is 50 percent; the cement is P.II 52.5-grade portland cement produced by Thai sea snail cement Limited liability company; the silica fume is SiO produced by Shanghai Shengkui building materials Co., Ltd2The content is more than 95 percent; the quartz sand is produced by Changxing Tianhe building materials Co.Ltd, and the particle size is 1 mm; the polycarboxylate superplasticizer is produced by Jiangsu Subo new materials, Inc., and has a solid content of 51.4 percent and a water reducing rate of more than 40 percent at a saturated mixing point of the superplasticizer; mixing water to form tap water for life; the viscosity reducer is produced by Rongsheng chemical industry Co., Ltd, and has a solid content of 50%; the sodium hexametaphosphate is produced by Shanghai Zhanyun chemical company Limited and is analytically pure. The ball mill is a ceramic double-pot ball mill produced by mechanical factory of Dingshuhaoqiang city, Yixing city, and the volumes of the ceramic inner pot 11 and the ceramic outer pot 2 are respectively 1 liter and 5 liters.
The preparation method comprises the following steps:
firstly, placing kaolin clay and ceramic grinding balls 14 in a ceramic inner tank 11 and sealing;
secondly, wrapping the outer surface of the ceramic inner tank 11 with a screen 12, fixing a built-in arc magnet 10 and a grinding-assisted stirring plate 9, and then placing the ceramic inner tank into the ceramic outer tank 2;
thirdly, mixing water, grinding-aid retarder sodium hexametaphosphate, polycarboxylate superplasticizer and viscosity reducer are injected into the ceramic outer tank 2, and the tank opening is sealed and then placed on a roller ball mill;
fourthly, fixing the external magnet 4 on the iron frame 5;
fifthly, placing the iron frame 5 on the upper side and the lower side of the ceramic outer tank 2 and fixing the iron frame on a roller ball mill;
sixthly, operating the roller ball mill to mechanically activate the kaolin clay for 20 to 40 minutes, and then enabling powder taking metakaolin as a main component to enter the ceramic outer tank 2 through the communicating holes on the tank body and the screen 12;
seventhly, filling other UHPC raw materials into a ceramic outer tank 2, sealing, putting the ceramic outer tank on a roller ball mill again, continuously operating the roller ball mill for 10 minutes, further grinding and mixing metakaolin and other UHPC raw materials into UHPC mixture under the action of a grinding-assisting stirring plate 9;
pouring out the UHPC mixture, testing the fluidity according to JG/T408-2019, and casting and molding, maintaining and testing the mechanical properties according to GB/T31387-2015.
Examples 1-3 the formulations are shown in table 1 and the preparation process is the same.
The formula of comparative example 1 is shown in Table 1, and the preparation process is the same.
The results of the examples and comparative examples are shown in Table 2
TABLE 1 formulation of examples and comparative examples
Figure BDA0003524595010000071
TABLE 2 test results
Figure BDA0003524595010000072
Figure BDA0003524595010000081
Compared with the comparative examples 1, 2 and 3, when the kaolin clay is mechanically activated for 10 minutes, no metakaolin enters the ceramic outer tank 2, and when the kaolin clay is mechanically activated for 20 to 40 minutes, the proportion of the metakaolin component and other components of the clay in the ceramic outer tank 2 is improved along with the extension of the mechanical activation time, but the proportion of the metakaolin component is increased more, and the fracture resistance and the compressive strength of the UHPC are both obviously improved, but the fluidity of the UHPC mixture is 0 after the mechanical activation for 40 minutes, so that the UHPC mixture is not easy to cast and mold, namely the mechanical activation time is not longer.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. The device for preparing the magnetized water UHPC is characterized by comprising an outer ceramic tank (2), an inner ceramic tank (11) and a screen (12) which are positioned in the outer ceramic tank (2),
the ceramic outer tank (2) is arranged on the roller ball mill, a plurality of discharge holes (13) are formed in the surface of the ceramic inner tank (11), and the outer surface of the ceramic inner tank (11) is wrapped by the screen (12).
2. The device for preparing magnetized water UHPC according to claim 1, characterized in that, further comprises an iron frame (5) and a set of external magnets (4), wherein the iron frame (5) is fixed on a roller ball mill, the set of external magnets (4) is fixed on the iron frame (5) and is positioned outside the ceramic outer tank (2), and the set of external magnets (4) comprises two external arc magnets which are oppositely arranged.
3. Device for the preparation of magnetized water UHPC according to claim 2, characterized in that it further comprises a set of internal magnets (10), said set of internal magnets (10) being fixed between said ceramic outer tank (2) and said ceramic inner tank (11), said set of internal magnets (10) comprising two oppositely arranged internal arc-shaped magnets.
4. The device for preparing the magnetized water UHPC according to the claim 3 is characterized by also comprising four grinding-assistant stirring plates (9), wherein the four grinding-assistant stirring plates (9) are respectively fixed at the end parts of two oppositely arranged built-in arc magnets, the surface of each grinding-assistant stirring plate (9) is provided with a first bolt hole (16) for fixing with the built-in arc magnets, and the edge of each grinding-assistant stirring plate is provided with at least one thin blade-shaped grinding hole (17).
5. Device for the preparation of magnetized water UHPC according to claim 4, characterized in that it further comprises a plurality of grinding balls (14), said plurality of grinding balls (14) being arranged inside said ceramic inner tank (11).
6. Device for the preparation of magnetized water UHPC according to claim 5, characterized in that it further comprises two sets of sealing and fastening assemblies, each set of sealing and fastening assemblies comprising one sealing cover (6) and fastening gusset (7), the sealing cover (6) of the first set of sealing and fastening assemblies being used to seal the port of the ceramic inner tank (11), the fastening triangular steel plate (7) is provided with a fastening screw, the fastening triangular steel plate (7) of the first group of sealing fastening components is used for fastening the sealing cover (6) of the first group of sealing fastening components on the port of the ceramic inner tank (11), the sealing cover (6) of the second group of sealing fastening components is used for sealing the port of the ceramic outer tank (2), and the fastening triangular steel plate (7) of the second group of sealing fastening components is used for fastening the sealing cover (6) of the second group of sealing fastening components on the port of the ceramic outer tank (2).
7. Process for the preparation of magnetized water UHPC using the device for the preparation of magnetized water UHPC according to claim 6, characterized in that it comprises the following steps:
step 1: placing a first raw material of kaolin clay and ceramic grinding balls (14) in a ceramic inner tank (11) and sealing;
step 2: wrapping the outer surface of the ceramic inner tank (11) with a screen (12), fixing a built-in magnet (10) and a grinding-assisted stirring plate (9), and then placing the ceramic inner tank and the grinding-assisted stirring plate into the ceramic outer tank (2);
and step 3: injecting a second raw material into the ceramic outer tank (2), sealing the tank opening of the ceramic outer tank (2), and placing the ceramic outer tank on a roller ball mill, wherein the second raw material comprises mixing water, grinding-aid retarder sodium hexametaphosphate, polycarboxylate superplasticizer and viscosity reducer;
and 4, step 4: fixing an external magnet (4) on an iron frame (5), placing the iron frame (5) on the upper side and the lower side of the ceramic outer tank (2) and fixing the iron frame on a roller ball mill;
and 5: after the roller ball mill is operated to mechanically activate the kaolin clay for 20 to 40 minutes, powder of the kaolin clay enters the ceramic outer tank (2) through a discharge hole (13) and a screen (12) on the ceramic inner tank (11);
and 6: filling the third raw material into a ceramic outer tank (2), sealing and then placing the ceramic outer tank on a roller ball mill again, continuously operating the roller ball mill for a preset time, and further grinding and mixing the first to third raw materials into UHPC mixture under the action of a grinding-assisted stirring plate (9);
and 7: pouring out, pouring and maintaining the UHPC mixture to obtain the magnetized water UHPC.
8. Process for the preparation of magnetized water UHPC according to claim 7, characterized in that the third raw material comprises: portland cement of P.II 52.5 grade and above, SiO2Silica fume with content of more than 95 percent; quartz sand with the grain diameter not more than 1 mm.
9. The process for preparing magnetized water UHPC according to claim 8, characterized in that the mass ratio of the first to the third raw materials is: 30-40% of Portland cement with strength grade of P.II 52.5 or above, 5-7% of SiO2Silica fume with content of more than 95 percent, 630% kaolin clay; 25-40% of quartz sand with the particle size not greater than 1 mm; 0.6 to 0.7 percent of polycarboxylate superplasticizer with water reducing rate of more than 40 percent; 1.0-2.0% of viscosity reducer; 0.5 to 1.0 percent of grinding-aid retarder sodium hexametaphosphate; 25 to 35 percent of mixing water.
10. Process for the preparation of magnetized waters UHPC according to claim 9, characterized in that the kaolin clay has a kaolin content of more than 50% and is ground in a quantity not exceeding 50% of the volume of the ceramic inner tank (11).
CN202210191546.4A 2022-02-28 2022-02-28 Device and process for preparing magnetized water UHPC Active CN114559545B (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102850011A (en) * 2011-07-01 2013-01-02 北京建筑材料科学研究总院有限公司 Technological process for preparing active powder concrete by using iron tailing
US20160046527A1 (en) * 2014-08-14 2016-02-18 Space Coatings Inc. Concrete composition and process
CN105751368A (en) * 2016-03-30 2016-07-13 叶侃 Raw material grinding and stirring device for ceramic product
CN210139504U (en) * 2019-05-27 2020-03-13 大埔县顺兴陶瓷有限公司 Propeller forming device for processing craft ceramic products
CN211709648U (en) * 2019-11-12 2020-10-20 山东华宇工学院 Drum-type sand separating, stirring and mixing machine
CN113731270A (en) * 2021-09-02 2021-12-03 广西北投交通养护科技集团有限公司 Feeding device for preparing high-crack-resistance curing material and using method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102850011A (en) * 2011-07-01 2013-01-02 北京建筑材料科学研究总院有限公司 Technological process for preparing active powder concrete by using iron tailing
US20160046527A1 (en) * 2014-08-14 2016-02-18 Space Coatings Inc. Concrete composition and process
CN105751368A (en) * 2016-03-30 2016-07-13 叶侃 Raw material grinding and stirring device for ceramic product
CN210139504U (en) * 2019-05-27 2020-03-13 大埔县顺兴陶瓷有限公司 Propeller forming device for processing craft ceramic products
CN211709648U (en) * 2019-11-12 2020-10-20 山东华宇工学院 Drum-type sand separating, stirring and mixing machine
CN113731270A (en) * 2021-09-02 2021-12-03 广西北投交通养护科技集团有限公司 Feeding device for preparing high-crack-resistance curing material and using method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
吴波: "《相互吸引的能量》", 现代出版社 *

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