CN114620993A - Preparation method of high-strength grey brick for ancient building restoration - Google Patents
Preparation method of high-strength grey brick for ancient building restoration Download PDFInfo
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- CN114620993A CN114620993A CN202210249831.7A CN202210249831A CN114620993A CN 114620993 A CN114620993 A CN 114620993A CN 202210249831 A CN202210249831 A CN 202210249831A CN 114620993 A CN114620993 A CN 114620993A
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- 239000011449 brick Substances 0.000 title claims abstract description 69
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 238000001125 extrusion Methods 0.000 claims abstract description 65
- 238000000034 method Methods 0.000 claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000011812 mixed powder Substances 0.000 claims abstract description 24
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000003063 flame retardant Substances 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 19
- 239000012744 reinforcing agent Substances 0.000 claims abstract description 16
- 238000003756 stirring Methods 0.000 claims abstract description 16
- 239000000843 powder Substances 0.000 claims abstract description 10
- 238000001035 drying Methods 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 238000005303 weighing Methods 0.000 claims abstract description 5
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 4
- 238000000498 ball milling Methods 0.000 claims abstract description 4
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 4
- 239000007822 coupling agent Substances 0.000 claims abstract description 4
- 239000002270 dispersing agent Substances 0.000 claims abstract description 4
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 239000003755 preservative agent Substances 0.000 claims abstract description 4
- 230000002335 preservative effect Effects 0.000 claims abstract description 4
- 230000002940 repellent Effects 0.000 claims abstract description 4
- 239000005871 repellent Substances 0.000 claims abstract description 4
- 239000002002 slurry Substances 0.000 claims abstract description 4
- 238000005507 spraying Methods 0.000 claims abstract description 4
- 238000012544 monitoring process Methods 0.000 claims description 31
- 239000007788 liquid Substances 0.000 claims description 20
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 18
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- 238000005259 measurement Methods 0.000 claims description 15
- 238000002156 mixing Methods 0.000 claims description 13
- HRZFUMHJMZEROT-UHFFFAOYSA-L sodium disulfite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])(=O)=O HRZFUMHJMZEROT-UHFFFAOYSA-L 0.000 claims description 12
- 235000010262 sodium metabisulphite Nutrition 0.000 claims description 12
- 239000004927 clay Substances 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 238000007605 air drying Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 229910002011 hydrophilic fumed silica Inorganic materials 0.000 claims description 6
- 239000000376 reactant Substances 0.000 claims description 6
- 239000004576 sand Substances 0.000 claims description 6
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 6
- 238000009530 blood pressure measurement Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 4
- 238000012937 correction Methods 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 4
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 3
- 239000003963 antioxidant agent Substances 0.000 claims description 3
- 230000003078 antioxidant effect Effects 0.000 claims description 3
- 125000004122 cyclic group Chemical group 0.000 claims description 3
- 239000003085 diluting agent Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 3
- 239000008239 natural water Substances 0.000 claims description 3
- 229920000098 polyolefin Polymers 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000010802 sludge Substances 0.000 claims description 3
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims description 3
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims description 3
- 229940001584 sodium metabisulfite Drugs 0.000 claims description 3
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims description 3
- 229910052902 vermiculite Inorganic materials 0.000 claims description 3
- 239000010455 vermiculite Substances 0.000 claims description 3
- 235000019354 vermiculite Nutrition 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 230000003014 reinforcing effect Effects 0.000 abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000010304 firing Methods 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910001579 aluminosilicate mineral Inorganic materials 0.000 description 1
- 239000003623 enhancer Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
- B28B17/0063—Control arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/20—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded
-
- 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
- C04B33/1305—Organic additives
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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
- C04B33/131—Inorganic additives
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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
- C04B33/1321—Waste slurries, e.g. harbour sludge, industrial muds
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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
- C04B33/24—Manufacture of porcelain or white ware
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3418—Silicon oxide, silicic acids or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3427—Silicates other than clay, e.g. water glass
- C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
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- Press-Shaping Or Shaping Using Conveyers (AREA)
Abstract
The invention belongs to the technical field of preparation of high-strength green bricks for ancient architecture restoration, and discloses a preparation method of the high-strength green bricks for ancient architecture restoration, which comprises the steps of weighing all components by weight, carrying out ball milling, filtering out mixed powder, and stirring in a slurry tank; spraying the mixed powder into a drying tower for drying, and adding a flame retardant material, a coupling agent, a reinforcing agent, a dispersing agent, a defoaming agent, a water repellent, a preservative and a flatting agent into the powder mixture; injecting the mixed powder into an extruder, and carrying out extrusion molding through the extruder to obtain a green brick; placing the prepared green bricks into an airing frame, and airing to obtain semi-formed green bricks; putting the prepared semi-formed green bricks into a brick kiln in order, and entering the next procedure after arrangement; and (5) basically forming the brick body to obtain a grey brick body. The flame retardant material prepared by the preparation method of the flame retardant material has strong performance, and the flame retardant effect of the grey brick is greatly improved; meanwhile, the reinforcing agent prepared by the preparation method of the reinforcing agent has a good reinforcing effect, and the strength effect of the black bricks is greatly improved.
Description
Technical Field
The invention belongs to the technical field of preparation of high-strength green bricks for ancient architecture restoration, and particularly relates to a preparation method of a high-strength green brick for ancient architecture restoration.
Background
The grey brick is fired with clay, which is the product of long-term weathering of certain alumino-silicate minerals and is known for its strong viscosity. The clay is mixed with water to make green brick, which is then calcined in brick kiln (900-1100 deg.C for 8-15 days) to make brick. The clay contains iron, and ferric oxide which is generated when the clay is completely oxidized in the firing process is red, namely the most common red brick; and if water is added for cooling during the firing process, the iron in the clay is incompletely oxidized (Fe3O4) to form cyan, namely, a grey brick. However, the existing preparation method of the high-strength grey brick for ancient construction has poor performance and poor flame-retardant effect; meanwhile, the reinforcing agent adopted has poor reinforcing effect.
In summary, the problems of the prior art are as follows: the existing preparation method of the high-strength grey brick for ancient construction has poor performance and poor flame-retardant effect; meanwhile, the reinforcing agent adopted has poor reinforcing effect.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a preparation method of a high-strength blue brick for ancient architecture restoration.
The invention is realized in such a way that the preparation method of the high-strength blue brick for ancient architecture restoration comprises the following steps:
weighing 20 parts of river sand, 15 parts of clay, 5 parts of sludge, 6 parts of vermiculite, 30 parts of red shale, 25 parts of black shale, 25 parts of red sand and 1 part of diluent by weight, adding the mixture into a ball mill, adding water until the water content of the raw materials is 36%, carrying out ball milling until the granularity reaches 250 meshes and the screen residue is 6.0%, filtering out mixed powder, and stirring the mixed powder in a slurry pool for 24 hours for later use;
spraying the mixed powder into a drying tower for drying, wherein the dried water accounts for 7.8-8.2 wt%, screening and grading the mud powder, mixing the mud powder with 20 meshes to 40 meshes to 60 meshes to 80 meshes to 100 meshes according to the weight ratio of 10 to 40 to 35 to 10 to 5, adding 10 parts of flame retardant material, 1 part of coupling agent, 1 part of reinforcing agent, 3 parts of dispersing agent, 1 part of defoaming agent, 3 parts of water repellent, 3 parts of preservative and 1 part of flatting agent into the powder mixture, continuously adding appropriate amount of water, stirring, and uniformly mixing to obtain mixed powder;
step three, injecting the mixed powder into an extruder, and performing extrusion molding through the extruder to obtain a green brick; placing the prepared green bricks into an air-drying rack, and air-drying for 40 hours to obtain semi-formed green bricks; putting the prepared semi-formed green bricks into a brick kiln in order, and entering the next procedure after finishing arrangement:
step four, roasting the green brick, controlling the roasting temperature to be 1300 ℃ and the roasting time to be 13 hours;
and step five, after roasting, basically forming the brick body, sealing the kiln, introducing clean water, and performing water seepage cooling on the brick body by utilizing natural water to obtain the blue brick body.
Further, the preparation method of the flame retardant material comprises the following steps:
(1) 20 parts of polyolefin, 5 parts of compatilizer, 0.3 part of antioxidant and 50 parts of flame retardant are weighed by mass and mixed at the temperature of 161 ℃ to obtain the flame-retardant material.
Further, the preparation method of the reinforcing agent comprises the following steps:
1) dissolving 1 part by weight of sodium pyrosulfite in 6 parts by weight of water, adding 6 parts by weight of liquid caustic soda, heating to 86 ℃, stirring for 4 hours, adding 5 parts by weight of hydrophilic fumed silica and 10 parts by weight of ethylene glycol, and cooling to 30-40 ℃ for reaction to obtain an intermediate reactant; adding sodium pyrosulfite into normal-temperature water, and stirring for 10-30 minutes to fully dissolve the sodium pyrosulfite into the water; adding hydrophilic fumed silica into a reaction solution of sodium metabisulfite and liquid caustic soda, stirring for 30-60 minutes, and then adding ethylene glycol;
2) and mixing the intermediate reactant with 8 parts of isopropanol and 1 part of triethanolamine, and then mixing with 1 part of sodium hexametaphosphate to obtain the reinforcing agent.
And further, extruding and molding by an extruder to obtain green bricks, carrying out polynomial fitting processing on the pressure of the extruder returned to a pressure monitoring terminal along with the pressure sensor on the obtained data, combining an extruder pressure calculation value obtained by the pressure science model, establishing an extruder pressure correction model, and realizing automatic judgment of the accuracy of the pressure of the extruder along with the measured data of the press.
Further, in the extrusion molding of an extruder to obtain a green brick, the extruder pressure monitoring method comprises the following steps: according to the combination of a pressure monitoring terminal measuring instrument and a pressure model, the annular pressure of an extruder is preliminarily calculated by using a fanning-darcy formula:
in the formula pl-cyclic pressure loss pa；
d is the inner diameter m of the extrusion cylinder of the press;
Dp-the press ram outer diameter m;
d-extrusion eye diameter m;
rho-density kg/m of mixed powder3；
L represents the length m of an extrusion cylinder path of the press;
f is the pressure combination coefficient;
and estimating the annular pressure, and obtaining a calculated value of the pressure of the extruding machine in real time by the model.
Further, the extruder pressure monitoring method further comprises the following steps: and obtaining real-time measurement data of the pressure of the extruding machine by the pressure of the extruding machine along with the pressure sensor.
Further, the extruder pressure monitoring method further comprises the following steps: and performing polynomial fitting on a calculated value of the pressure of the extruder obtained by real-time measurement of the pressure monitoring terminal and real-time data measured under extrusion, and correcting the pressure monitoring terminal to measure and calculate the pressure model of the extruder in real time.
Further, the extruder pressure monitoring method further comprises the following steps: and (3) utilizing the corrected pressure monitoring terminal measurement real-time calculation extruder pressure model to combine with the pressure monitoring terminal measurement to track the extruder pressure in real time, comparing the pressure with the real-time data of the extruder pressure measured along with the press machine, and further automatically judging the accuracy of the extruder pressure measured along with the press machine.
Further, the barological model: extruder pressure PaInfluence PaThe parameters of (A) are: coefficient of friction F in press rodaAverage extrusion speed V in the press ramaDensity rho of extrusion liquid of press machine, extrusion depth L and inner diameter D of extrusion cylinder2Outer diameter D of press column1Coefficient of friction FaExtrusion depth L, inner diameter D of extrusion vessel2Outer diameter D of press column1Directly read in situ, while the average extrusion speed V in the press ramaAnd the density rho of the extrusion liquid of the press needs to be measured in real time on site.
Further, automatically judging the authenticity of the pressure of the extruding machine along with the measured data of the pressing machine comprises:
the fitting function is
The estimated extruder pressure value and the historical measured value are collated, n data are corrected in total, the fitting times k are determined, and the historical data (L) to be correctedi,Pai) Substituting, tabulating and calculating a linear system of equations:
the system of linear equations is a positive definite matrix, so that there is a unique solution to solve for a0,a1,a2....ak；
In the formula PaIs the extruder pressure, L is the extrusion depth;
the viscosity of the extrusion liquid of the press machine, the density of the extrusion liquid of the press machine, the pump displacement and the size parameters of an on-site extrusion cylinder and a press machine column are measured, the current pressure of the extruder is calculated through a pressure model, and then the accuracy of automatically identifying pressure measurement data is realized by adopting a polynomial fitting method.
The invention has the advantages and positive effects that: the flame retardant material prepared by the preparation method of the flame retardant material has strong performance, and the flame retardant effect of the grey brick is greatly improved; meanwhile, the reinforcing agent prepared by the preparation method of the reinforcing agent has a good reinforcing effect, and the strength effect of the black bricks is greatly improved.
The invention carries out extrusion molding by an extruder to obtain the data of the pressure of the extruder returned to a pressure monitoring terminal along with a pressure sensor in a green brick, carries out polynomial fitting processing on the calculated value of the pressure of the extruder obtained by combining a pressure science model, establishes an extruder pressure correction model and realizes the automatic judgment of the accuracy of the measured data of the pressure of the extruder along with the press. The viscosity of the extrusion liquid of the press machine, the density of the extrusion liquid of the press machine, the pump displacement and the size parameters of an on-site extrusion cylinder and a press machine column are measured, the current pressure of the extruder is calculated through a pressure model, and then the accuracy of automatically identifying pressure measurement data is realized by adopting a polynomial fitting method.
Drawings
FIG. 1 is a flow chart of a preparation method of a high-strength green brick for ancient architecture restoration provided by the implementation of the invention.
FIG. 2 is a flow chart of a method for preparing a flame retardant material provided by the practice of the present invention.
FIG. 3 is a flow chart of a method for preparing an enhancer provided by the practice of the present invention.
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.
The application of the principles of the present invention will now be further described with reference to the accompanying drawings.
As shown in figure 1, the invention provides a preparation method of a high-strength grey brick for ancient architecture restoration, which comprises the following steps:
s101, weighing 20 parts of river sand, 15 parts of clay, 5 parts of sludge, 6 parts of vermiculite, 30 parts of red shale, 25 parts of black shale, 25 parts of red sand and 1 part of diluent by weight, adding the materials into a ball mill, adding water until the water content of the raw materials is 36%, carrying out ball milling until the granularity reaches 6.0 percent of the screen residue of 250 meshes, filtering out mixed powder, and stirring the mixed powder in a slurry pool for 24 hours for later use;
s102, spraying the mixed powder into a drying tower for drying, wherein the dried water accounts for 7.8-8.2% by weight, screening and grading the mud powder, mixing the mud powder with 20 meshes, 40 meshes, 60 meshes, 80 meshes, 100 meshes and the weight ratio of 10:40:35:10:5, adding 10 parts of flame retardant material, 1 part of coupling agent, 1 part of reinforcing agent, 3 parts of dispersing agent, 1 part of defoaming agent, 3 parts of water repellent, 3 parts of preservative and 1 part of flatting agent into the powder mixture, continuously adding appropriate amount of water, stirring, and uniformly mixing to obtain mixed powder;
s103, injecting the mixed powder into an extruder, and performing extrusion forming through the extruder to obtain a green brick; placing the prepared green bricks into an air-drying rack, and air-drying for 40 hours to obtain semi-formed green bricks; putting the prepared semi-formed green bricks into a brick kiln in order, and entering the next procedure after finishing arrangement:
s104, roasting the green brick, wherein the roasting temperature is controlled to be 1300 ℃, and the roasting time is controlled to be 13 hours;
and S105, after roasting, basically forming the brick body, sealing the kiln, introducing clean water, and performing water seepage cooling on the brick body by utilizing natural water to obtain the blue brick body.
As shown in fig. 2, the preparation method of the flame retardant material provided by the invention is as follows:
s201, weighing 20 parts of polyolefin, 5 parts of compatilizer, 0.3 part of antioxidant and 50 parts of flame retardant by mass, and mixing at 161 ℃ to obtain the flame-retardant material.
As shown in fig. 3, the preparation method of the reinforcing agent provided by the invention is as follows:
s301, dissolving 1 part by weight of sodium pyrosulfite in 6 parts by weight of water, adding 6 parts by weight of liquid caustic soda, heating to 86 ℃, stirring for 4 hours, adding 5 parts by weight of hydrophilic fumed silica and 10 parts by weight of ethylene glycol, and cooling to 30-40 ℃ for reaction to obtain an intermediate reactant; adding sodium pyrosulfite into normal-temperature water, and stirring for 10-30 minutes to fully dissolve the sodium pyrosulfite into the water; adding hydrophilic fumed silica into a reaction solution of sodium metabisulfite and liquid caustic soda, stirring for 30-60 minutes, and then adding ethylene glycol;
s302, mixing the intermediate reactant with 8 parts of isopropanol and 1 part of triethanolamine, and then mixing with 1 part of sodium hexametaphosphate to obtain the reinforcing agent.
In a preferred embodiment of the invention, an extruder is extruded and molded to obtain green bricks, data of the pressure of the extruder returned to a pressure monitoring terminal along with a pressure sensor are processed by a polynomial fitting method in combination with an extruder pressure calculation value obtained by a pressure science model, and an extruder pressure correction model is established to realize automatic judgment of the accuracy of the measured data of the pressure of the extruder along with the pressure.
In a preferred embodiment of the present invention, in press-molding a green brick by an extruder, a method for monitoring the pressure of the extruder comprises: according to the combination of a pressure monitoring terminal measuring instrument and a pressure model, the annular pressure of an extruder is preliminarily calculated by using a fanning-darcy formula:
in the formula pl-cyclic pressure loss pa；
d is the inner diameter m of the extrusion cylinder of the press;
Dp-the press ram outer diameter m;
d-extrusion eye diameter m;
rho-density kg/m of mixed powder3；
L represents the length m of an extrusion cylinder path of the press;
f is the pressure combination coefficient;
and estimating the annular pressure, and obtaining a calculated value of the pressure of the extruding machine in real time by the model.
In a preferred embodiment of the present invention, the extruder pressure monitoring method further comprises: and obtaining real-time measurement data of the pressure of the extruding machine by the pressure of the extruding machine along with the pressure sensor.
In a preferred embodiment of the present invention, the extruder pressure monitoring method further comprises: and performing polynomial fitting on a calculated value of the pressure of the extruder obtained by real-time measurement of the pressure monitoring terminal and real-time data measured under extrusion, and correcting the pressure monitoring terminal to measure and calculate the pressure model of the extruder in real time.
In a preferred embodiment of the present invention, the extruder pressure monitoring method further comprises: and (3) utilizing the corrected pressure monitoring terminal measurement real-time calculation extruder pressure model to combine with the pressure monitoring terminal measurement to track the extruder pressure in real time, comparing the pressure with the real-time data of the extruder pressure measured along with the press machine, and further automatically judging the accuracy of the extruder pressure measured along with the press machine.
In a preferred embodiment of the invention, the barometric model is: extruder pressure PaInfluence PaThe parameters of (A) are: coefficient of friction F in press rodaAverage extrusion speed V in the press ramaDensity rho of extrusion liquid of press machine, extrusion depth L and inner diameter D of extrusion cylinder2Outer diameter D of press column1Coefficient of friction FaExtrusion depth L, inner diameter D of extrusion vessel2Outer diameter D of press column1Direct on-site reading, while the average extrusion speed V in the press ramaThe density rho of the extrusion liquid of the press needs to be on siteAnd (4) measuring in real time.
In a preferred embodiment of the present invention, said automatically determining the authenticity of the press pressure as a function of the press measurement data comprises:
the fitting function is
The estimated extruder pressure value and the historical measured value are collated, n data are corrected in total, the fitting times k are determined, and the historical data (L) to be correctedi,Pai) Substituting, tabulating and calculating a linear system of equations:
the system of linear equations is a positive definite matrix, so that there is a unique solution to solve for a0,a1,a2....ak；
In the formula PaIs the extruder pressure, L is the extrusion depth;
the viscosity of the extrusion liquid of the press machine, the density of the extrusion liquid of the press machine, the pump displacement and the size parameters of an on-site extrusion barrel and a press machine column are measured, the current pressure of the press machine is calculated through a pressure model, and then the accuracy of automatically identifying pressure measurement data is realized by adopting a polynomial fitting method.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The preparation method of the high-strength green brick for ancient building restoration is characterized by comprising the following steps of:
weighing 20 parts of river sand, 15 parts of clay, 5 parts of sludge, 6 parts of vermiculite, 30 parts of red shale, 25 parts of black shale, 25 parts of red sand and 1 part of diluent by weight, adding the mixture into a ball mill, adding water until the water content of the raw materials is 36%, carrying out ball milling until the granularity reaches 250 meshes and the screen residue is 6.0%, filtering out mixed powder, and stirring the mixed powder in a slurry pool for 24 hours for later use;
spraying the mixed powder into a drying tower for drying, wherein the dried water accounts for 7.8-8.2 wt%, screening and grading the mud powder, mixing the mud powder with 20 meshes to 40 meshes to 60 meshes to 80 meshes to 100 meshes according to the weight ratio of 10 to 40 to 35 to 10 to 5, adding 10 parts of flame retardant material, 1 part of coupling agent, 1 part of reinforcing agent, 3 parts of dispersing agent, 1 part of defoaming agent, 3 parts of water repellent, 3 parts of preservative and 1 part of flatting agent into the powder mixture, continuously adding appropriate amount of water, stirring, and uniformly mixing to obtain mixed powder;
step three, injecting the mixed powder into an extruder, and performing extrusion molding through the extruder to obtain a green brick; placing the prepared green bricks into an air-drying rack, and air-drying for 40 hours to obtain semi-formed green bricks; putting the prepared semi-formed green bricks into a brick kiln in order, and entering the next procedure after finishing arrangement:
step four, roasting the green brick, controlling the roasting temperature to be 1300 ℃ and the roasting time to be 13 hours;
and step five, after roasting, basically forming the brick body, sealing the kiln, introducing clean water, and performing water seepage cooling on the brick body by utilizing natural water to obtain the blue brick body.
2. The method for preparing the high-strength grey brick for ancient architecture restoration according to claim 1, wherein the method for preparing the flame retardant material comprises the following steps:
(1) 20 parts of polyolefin, 5 parts of compatilizer, 0.3 part of antioxidant and 50 parts of flame retardant are weighed by mass and mixed at the temperature of 161 ℃ to obtain the flame retardant material.
3. The method for preparing the high-strength grey brick for ancient architecture restoration according to claim 1, wherein the method for preparing the reinforcing agent comprises the following steps:
1) dissolving 1 part of sodium pyrosulfite in 6 parts of water by weight, adding 6 parts of liquid caustic soda, heating to 86 ℃, stirring for 4 hours, adding 5 parts of hydrophilic fumed silica and 10 parts of ethylene glycol, and cooling to 30-40 ℃ for reaction to obtain an intermediate reactant; adding sodium pyrosulfite into normal-temperature water, and stirring for 10-30 minutes to fully dissolve the sodium pyrosulfite into the water; adding hydrophilic fumed silica into a reaction solution of sodium metabisulfite and liquid caustic soda, stirring for 30-60 minutes, and then adding ethylene glycol;
2) and mixing the intermediate reactant with 8 parts of isopropanol and 1 part of triethanolamine, and then mixing with 1 part of sodium hexametaphosphate to obtain the reinforcing agent.
4. The method for preparing a blue brick for high-strength ancient building restoration according to claim 1, wherein an extruder is used for extrusion molding to obtain green bricks, data of the pressure of the extruder returned to a pressure monitoring terminal along with a pressure sensor are processed by a polynomial fitting method in combination with an extruder pressure calculation value obtained by a pressure science model, an extruder pressure correction model is established, and automatic judgment of the accuracy of the extruder pressure along with the measurement data of the press is realized.
5. The method for manufacturing a high-strength grey brick for ancient construction and restoration according to claim 4, wherein an extruder is used for extrusion molding to obtain a green brick, and the method for monitoring the pressure of the extruder comprises the following steps: according to the combination of a pressure monitoring terminal measuring instrument and a pressure model, the annular pressure of an extruder is preliminarily calculated by using a fanning-darcy formula:
in the formula pl-cyclic pressure loss pa；
d is the inner diameter m of the extrusion cylinder of the press;
Dp-the press ram outer diameter m;
d-extrusion eye diameter m;
rho-density kg/m of mixed powder3；
L is the length m of an extrusion cylinder path of the press;
f is the pressure combination coefficient;
and estimating the annular pressure, and obtaining a calculated value of the pressure of the extruding machine in real time by the model.
6. The method of claim 5, wherein the method of monitoring the pressure of the extruder further comprises: and obtaining real-time measurement data of the pressure of the extruding machine by the pressure of the extruding machine along with the pressure sensor.
7. The method of claim 6, wherein the method of monitoring the pressure of the extruder further comprises: and performing polynomial fitting on a calculated value of the pressure of the extruder obtained by real-time measurement of the pressure monitoring terminal and real-time data measured under extrusion, and correcting the pressure monitoring terminal to measure and calculate the pressure model of the extruder in real time.
8. The method of claim 7, wherein the method of monitoring the pressure of the extruder further comprises: and (3) utilizing the corrected pressure monitoring terminal measurement real-time calculation extruder pressure model to combine with the pressure monitoring terminal measurement to track the extruder pressure in real time, comparing the pressure with the real-time data of the extruder pressure measured along with the press machine, and further automatically judging the accuracy of the extruder pressure measured along with the press machine.
9. The method of claim 5The preparation method of the high-strength grey brick for ancient construction and restoration is characterized in that the compression mechanical model comprises the following steps: extruder pressure PaInfluence PaThe parameters of (A) are as follows: coefficient of friction F in press rodaAverage extrusion speed V in the press ramaDensity rho of extrusion liquid of press machine, extrusion depth L and inner diameter D of extrusion cylinder2Outer diameter D of press column1Coefficient of friction FaExtrusion depth L, inner diameter D of extrusion vessel2Outer diameter D of press column1Direct on-site reading, while the average extrusion speed V in the press ramaAnd the density rho of the extrusion liquid of the press needs to be measured in real time on site.
10. The method of claim 8, wherein the automatically determining the authenticity of the extruder pressure along with the press measurement data comprises:
the fitting function is
The estimated value of the pressure of the extruder and the historical measured values are collated, n data are corrected in total, the fitting times k are determined, and the historical data (L) to be correctedi,Pai) Substituting, tabulating and calculating a linear system of equations:
the system of linear equations is a positive definite matrix, so that there is a unique solution to solve for a0,a1,a2....ak；
In the formula PaIs the extruder pressure, L is the extrusion depth;
the viscosity of the extrusion liquid of the press machine, the density of the extrusion liquid of the press machine, the pump displacement and the size parameters of an on-site extrusion barrel and a press machine column are measured, the current pressure of the press machine is calculated through a pressure model, and then the accuracy of automatically identifying pressure measurement data is realized by adopting a polynomial fitting method.
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