CN117021363A - Accurate slurry metering method of autoclaved aerated concrete production equipment - Google Patents
Accurate slurry metering method of autoclaved aerated concrete production equipment Download PDFInfo
- Publication number
- CN117021363A CN117021363A CN202311036507.8A CN202311036507A CN117021363A CN 117021363 A CN117021363 A CN 117021363A CN 202311036507 A CN202311036507 A CN 202311036507A CN 117021363 A CN117021363 A CN 117021363A
- Authority
- CN
- China
- Prior art keywords
- slurry
- cutting
- aerated concrete
- production equipment
- concrete production
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002002 slurry Substances 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims abstract description 49
- 239000004567 concrete Substances 0.000 title claims abstract description 36
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 35
- 238000005520 cutting process Methods 0.000 claims abstract description 46
- 239000002699 waste material Substances 0.000 claims abstract description 23
- 239000002994 raw material Substances 0.000 claims abstract description 22
- 238000003756 stirring Methods 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000004806 packaging method and process Methods 0.000 claims abstract description 4
- 230000003068 static effect Effects 0.000 claims abstract description 4
- 239000004568 cement Substances 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 20
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 16
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 16
- 239000004571 lime Substances 0.000 claims description 16
- 239000002245 particle Substances 0.000 claims description 15
- 239000000047 product Substances 0.000 claims description 15
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 12
- 230000000284 resting effect Effects 0.000 claims description 12
- 238000003860 storage Methods 0.000 claims description 12
- 239000010440 gypsum Substances 0.000 claims description 11
- 229910052602 gypsum Inorganic materials 0.000 claims description 11
- 239000004576 sand Substances 0.000 claims description 11
- 238000004513 sizing Methods 0.000 claims description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 10
- 230000001276 controlling effect Effects 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 8
- 238000004064 recycling Methods 0.000 claims description 8
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical group [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 6
- 238000004537 pulping Methods 0.000 claims description 6
- 239000011265 semifinished product Substances 0.000 claims description 6
- 230000007306 turnover Effects 0.000 claims description 6
- 239000002351 wastewater Substances 0.000 claims description 6
- 238000005266 casting Methods 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 claims description 5
- 239000002910 solid waste Substances 0.000 claims description 5
- 239000010881 fly ash Substances 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 235000012255 calcium oxide Nutrition 0.000 claims description 3
- 239000000292 calcium oxide Substances 0.000 claims description 3
- 238000009960 carding Methods 0.000 claims description 3
- 238000005187 foaming Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000004570 mortar (masonry) Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 238000012545 processing Methods 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000010561 standard procedure Methods 0.000 description 2
- 238000010257 thawing Methods 0.000 description 2
- 230000004580 weight loss Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000383 hazardous chemical Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/04—Supplying or proportioning the ingredients
- B28C7/0404—Proportioning
-
- 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
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/14—Apparatus or processes for treating or working the shaped or preshaped articles for dividing shaped articles by cutting
-
- 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
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/245—Curing concrete articles
-
- 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
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
-
- 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
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/04—Supplying or proportioning the ingredients
- B28C7/0404—Proportioning
- B28C7/0418—Proportioning control systems therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/04—Supplying or proportioning the ingredients
- B28C7/0481—Plant for proportioning, supplying or batching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/04—Supplying or proportioning the ingredients
- B28C7/06—Supplying the solid ingredients, e.g. by means of endless conveyors or jigging conveyors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/04—Supplying or proportioning the ingredients
- B28C7/12—Supplying or proportioning liquid ingredients
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Dispersion Chemistry (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Ceramic Engineering (AREA)
- Automation & Control Theory (AREA)
- Manufacturing & Machinery (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
The invention discloses a slurry accurate metering method of autoclaved aerated concrete production equipment, which comprises the following steps of firstly, processing raw materials; secondly, batching; thirdly, static cutting; fourth, turning over to remove waste skin; fifthly, autoclaved curing; sixthly, breaking the plates and packaging; according to the slurry accurate metering method of the autoclaved aerated concrete production equipment, various raw materials are metered by adopting electronic scales respectively, so that accurate metering is ensured, and then water is added, mixed, stirred and digested; and the proportioning and stirring of the raw materials are controlled by a PLC; the slurry is conveyed by a frequency converter, and when the conveying amount of the slurry is close to a set value, the slurry flow is reduced by frequency conversion and a butterfly valve, so that the purpose of accurate metering is achieved.
Description
Technical Field
The invention particularly relates to a slurry accurate metering method of autoclaved aerated concrete production equipment, and belongs to the technical field of autoclaved aerated concrete production equipment.
Background
The solid waste tail mud produced by the existing machine-made sand production line has large quantity, large recovery difficulty and high cost, and increases the production cost for mine enterprises; but if stacked in open air, serious environmental hazards are caused. The autoclaved aerated concrete block is a porous concrete product which is prepared by taking fly ash, lime, cement, gypsum, slag and the like as main raw materials, adding a proper amount of a gas generating agent, a regulator and a bubble stabilizer, and carrying out the technological processes of proportioning, stirring, pouring, standing, cutting, high-pressure steaming and the like. As a novel building wall material, the autoclaved aerated concrete block has low energy consumption and environmental protection, and meets the national policy standard very much. Therefore, the machine-made sand-solid waste material is applied to the autoclaved aerated concrete block to produce the high-quality autoclaved aerated concrete block meeting the national standard, and the problems of tailing accumulation, pollution and waste are solved.
However, the casting materials in the production process of the existing autoclaved aerated concrete production equipment cannot be effectively metered, so that the uniformity of the autoclaved aerated concrete block production is poor; therefore, it is needed to propose a slurry accurate metering method of autoclaved aerated concrete production equipment.
Disclosure of Invention
In order to solve the problems, the invention provides a slurry accurate metering method of autoclaved aerated concrete production equipment, slurry delivery is controlled by a frequency converter, and when the delivery amount of the slurry is close to a set value, the slurry flow is reduced by frequency conversion and a butterfly valve, so that the aim of accurate metering is fulfilled.
The invention relates to a slurry accurate metering method of autoclaved aerated concrete production equipment, which comprises the following steps:
in the first step, the raw materials are processed,
(1) Cement of lime-cement mixed calcareous system is selected as raw material; taking out the cement from the cylinder warehouse, and loading the cement into a proportioning bin for storage;
(2) Stirring and screening the machine-made sand-solid waste materials to obtain particles with the granularity of 160-180 meshes, and conveying the particles into a pulping pool for pulping; then the slurry is conveyed into a slurry mixing tank by a submerged conveying pump for slurry preparation; after the sizing agent is qualified, the sizing agent is conveyed to a sizing agent storage tank for storage by a submerged conveying pump;
(3) Lime and gypsum are crushed and ball milled firstly after entering a factory, the working system of the section is intermittent production, the raw materials are crushed continuously into particles with the granularity less than or equal to 25mm after entering the factory, and the particles are respectively sent into a bin for storage by a bucket elevator through a three-way chute; lime and gypsum particles are respectively fed by respective speed-regulating belt scales according to a certain proportion, enter a ball mill through respective blanking sliders to be mixed and ground, and are lifted into a cementing bin through a hopper to be stored for standby after the fineness of the mixture reaches 3500-4000 cm/g;
in the second step, the materials are mixed,
sequentially adding the metered mortar, the mixed cementing material and the cement into a pouring stirrer according to the proportion for mixing and stirring, and introducing a certain amount of steam into the stirrer according to the technological requirement during stirring to ensure that the temperature of the slurry in the stirrer reaches about 40-45 ℃ and the stirring time is 3-4min; the raw materials are respectively metered by adopting an electronic scale, so that the metering is accurate, and then water is added, mixed, stirred and digested; the proportioning and stirring of the raw materials are controlled by a PLC; then, opening a lower valve of the aluminum powder paste stirrer, enabling the aluminum powder paste to flow into a pouring stirrer, and mixing and stirring for less than 40 seconds; then pouring the slurry into a mould, and conveying the slurry to a slurry metering scale through a slurry pump provided with a frequency converter in the slurry pouring and conveying process; during conveying, the PLC is used for controlling the action of the frequency converter, so that the rotating speed of a driving motor of the slurry pump is regulated; when the initial preset value is reached, the frequency of the input current of the motor is reduced by utilizing the frequency converter to reduce the rotating speed of the motor; meanwhile, the opening and closing angle of the pneumatic butterfly valve is matched at the slurry outlet to control the flow of the slurry, so that a practically required set value is achieved; the whole period is controlled to be 3-4min; when the conveying amount of the slurry is close to a set value, the slurry flow is reduced through frequency conversion and a butterfly valve, so that the purpose of accurate metering is achieved;
third, the cutting is stopped still,
transferring the mould to a cutting area after the foaming stillness meets the cutting requirement, disassembling the separating mould by a turnover mechanism, turning over the blank by 90 degrees and placing the blank on a trolley; the green body of the trolley device realizes six-sided cutting of the green body to reach the set specification through longitudinal cutting, transverse cutting and other working procedures;
fourth, turning over to remove the waste skin,
placing the cut green body and the side plates on a small pulley of a scrap removing overturning table by a semi-finished product lifting tool, starting an electromagnetic chuck, starting an overturning hydraulic system, overturning the green body and the side plates by-90 degrees, and enabling a peeling device to move from top to bottom to scrape scraps; the overturning hydraulic system is started to overturn to the initial position, and the blank body and the side plates are hoisted to the steam curing trolley in front of the kettle by the semi-finished product hoisting tool;
fifth, the autoclaved curing is carried out,
the autoclaved trolley fully loaded with the block green body is sent into an autoclave through a ferry vehicle to carry out high-temperature and high-pressure autoclaved maintenance; the autoclave adopts thermal control type centralized control and automatically controls the temperature and the pressure; a secondary instrument display and alarm for temperature and pressure and a kettle door safety device are arranged in the control room, and the use standard and safety protection measures of the pressure container are emphasized, so that the production safety and the realization of a maintenance process system are ensured; the steamed green bodies are piled, grouped and placed, and the separated die bodies are transported to a die assembly area by a trolley to be cleaned and assembled for recycling; the tail gas in the autoclave is sent to a resting room or recycled to the boiler room for preheating water through a pipeline;
sixthly, the board is broken off and packaged,
after the products are discharged from the kettle, stacking is carried out after the procedures of ferrying, finished product lifting, automatic plate breaking, conveying and packaging, and the products which are processed into stacks are directly stacked in a finished product field by a forklift;
wherein the weight of the produced aerated concrete block is 400-700Kg/m 3 The method comprises the steps of carrying out a first treatment on the surface of the Out-of-kettle compressive strength: average value 5MPa, minimum value 3.5MPa; dry shrinkage value: under the condition of a rapid method, the measurement is less than or equal to 0.8mm/m;the measurement is less than or equal to 0.5mm/m under the standard method condition; freezing resistance: after 15 times of freeze thawing cycle, the weight loss is less than or equal to 5 percent, and the strength loss is less than or equal to 20 percent; the heat conductivity coefficient is less than or equal to 0.12-0.16W/m.k.
Further, when the ingredients are mixed in the second step, the volume weight is 400-700kg/m 3 The design and mixing proportion of the aerated concrete block comprises the following materials in percentage by mass: lime: and (3) cement: gypsum=60 to 75%: 15-18%: 9-11%: 2-5%; also comprises 400-600 g/m of aluminum powder 3 The method comprises the steps of carrying out a first treatment on the surface of the The water-material ratio is 0.6-0.8.
As a preferred embodiment, the machine-made sand-setting waste material includes one or both of tailing sand (sand) and fly ash.
As a preferred embodiment, the lime is quicklime.
In a preferred embodiment, the cement is standard 325# or 425# cement.
Further, the specific operation steps of the stationary cutting in the third step are as follows: (1) After casting, carding bubbles, transferring the die to a resting area for initial gas generating and setting, wherein the temperature of the resting area is 40-45 ℃, and resting for 120-150min; pulling out the resting chamber after the cutting strength is reached; (2) After the stationary stop meets the cutting requirement, transferring the die to a cutting area, disassembling the separating die by a turnover mechanism, turning over the blank body by 90 degrees and placing the blank body on a trolley; the trolley device conveys the green body to realize six-face cutting of the green body to reach the set specification (length + -3 mm, width + -1 mm, height + -1 mm) through the procedures of longitudinal cutting, transverse cutting and the like.
Still further, the strength of the blank body after the blank body is stopped is 0.15-0.18MPa.
Further, in the fifth step, when autoclaved curing is performed, the time for entering and exiting the kettle is controlled to be 0.5h; when vacuumizing, controlling the pressure to be 0-0.06MPa and the time to be 0.5h; when the pressure is increased, the control pressure is 0.06-1.3MPa, and the time is 1h; at constant pressure, controlling the pressure to be 1.3MPa and the time to be 5 hours; when the pressure is reduced, the pressure is controlled to be 1.3-0MPa, and the time is 1h.
The method is characterized by further comprising the steps of recycling waste water and waste materials generated in the production process, recycling the recycled waste water and waste materials by a waste mixer, and discharging no waste slurry; the waste slurry is stored and then is matched with the raw materials for secondary use.
Compared with the prior art, the method for accurately metering the sizing agent of the autoclaved aerated concrete production equipment has the advantages that various raw materials are metered by adopting electronic scales respectively, so that accurate metering is ensured, and then water is added, mixed, stirred and digested; and the proportioning and stirring of the raw materials are controlled by a PLC; the slurry is conveyed by a frequency converter, and when the conveying amount of the slurry is close to a set value, the flow rate of the slurry is reduced by frequency conversion and a butterfly valve, so that the purpose of accurate metering is achieved; and the weight of the produced aerated concrete block is 400-700Kg/m 3 The method comprises the steps of carrying out a first treatment on the surface of the Out-of-kettle compressive strength: average value 5MPa, minimum value 3.5MPa; dry shrinkage value: under the condition of a rapid method, the measurement is less than or equal to 0.8mm/m; the measurement is less than or equal to 0.5mm/m under the standard method condition; freezing resistance: after 15 times of freeze thawing cycle, the weight loss is less than or equal to 5 percent, and the strength loss is less than or equal to 20 percent; the heat conductivity coefficient is less than or equal to 0.12-0.16W/m.k.
Drawings
FIG. 1 is a schematic process flow diagram of example 1 of the present invention.
Fig. 2 is a schematic process flow diagram of example 2 of the present invention.
Detailed Description
Example 1
The accurate slurry metering method of the autoclaved aerated concrete production equipment shown in fig. 1 comprises the following steps:
in the first step, the raw materials are processed,
(1) Cement of lime-cement mixed calcareous system is selected as raw material; taking out the cement from the cylinder warehouse, and loading the cement into a proportioning bin for storage;
(2) Stirring and screening the machine-made sand-solid waste materials to obtain particles with the granularity of 160-180 meshes, and conveying the particles into a pulping pool for pulping; then the slurry is conveyed into a slurry mixing tank by a submerged conveying pump for slurry preparation; after the sizing agent is qualified, the sizing agent is conveyed to a sizing agent storage tank for storage by a submerged conveying pump;
(3) Lime and gypsum are crushed and ball milled firstly after entering a factory, the working system of the section is intermittent production, the raw materials are crushed continuously into particles with the granularity less than or equal to 25mm after entering the factory, and the particles are respectively sent into a bin for storage by a bucket elevator through a three-way chute; lime and gypsum particles are respectively fed by respective speed-regulating belt scales according to a certain proportion, enter a ball mill through respective blanking sliders to be mixed and ground, and are lifted into a cementing bin through a hopper to be stored for standby after the fineness of the mixture reaches 3500-4000 cm/g;
in the second step, the materials are mixed,
sequentially adding the metered mortar, the mixed cementing material and the cement into a pouring stirrer according to the proportion for mixing and stirring, and introducing a certain amount of steam into the stirrer according to the technological requirement during stirring to ensure that the temperature of the slurry in the stirrer reaches about 40-45 ℃ and the stirring time is 3-4min; the raw materials are respectively metered by adopting an electronic scale, so that the metering is accurate, and then water is added, mixed, stirred and digested; the proportioning and stirring of the raw materials are controlled by a PLC; then, opening a lower valve of the aluminum powder paste stirrer, enabling the aluminum powder paste to flow into a pouring stirrer, and mixing and stirring for less than 40 seconds; then pouring the slurry into a mould, and conveying the slurry to a slurry metering scale through a slurry pump provided with a frequency converter in the slurry pouring and conveying process; during conveying, the PLC is used for controlling the action of the frequency converter, so that the rotating speed of a driving motor of the slurry pump is regulated; when the initial preset value is reached, the frequency of the input current of the motor is reduced by utilizing the frequency converter to reduce the rotating speed of the motor; meanwhile, the opening and closing angle of the pneumatic butterfly valve is matched at the slurry outlet to control the flow of the slurry, so that a practically required set value is achieved; the whole period is controlled to be 3-4min; when the conveying amount of the slurry is close to a set value, the slurry flow is reduced through frequency conversion and a butterfly valve, so that the purpose of accurate metering is achieved;
third, the cutting is stopped still,
transferring the mould to a cutting area after the foaming stillness meets the cutting requirement, disassembling the separating mould by a turnover mechanism, turning over the blank by 90 degrees and placing the blank on a trolley; the green body of the trolley device realizes six-sided cutting of the green body to reach the set specification through longitudinal cutting, transverse cutting and other working procedures; specifically, (1) after casting, carding bubbles, transferring the die to a static curing area for initial gas generating and curing, wherein the temperature of the static curing area is 40-45 ℃, and standing for 120-150min; pulling out the resting chamber after the cutting strength is reached; wherein the strength of the blank body after the rest is 0.15-0.18MPa; the product specification is 4.8x1.2x0.6 m 3 A/die; (2) After the stationary stop meets the cutting requirement, transferring the die to a cutting area, disassembling the separating die by a turnover mechanism, turning over the blank body by 90 degrees and placing the blank body on a trolley; the trolley device conveys the blank body to realize six-face cutting of the blank body to reach the set specification (length + -3 mm, width + -1 mm, height + -1 mm) through the procedures of longitudinal cutting, transverse cutting and the like;
fourth, turning over to remove the waste skin,
placing the cut green body and the side plates on a small pulley of a scrap removing overturning table by a semi-finished product lifting tool, starting an electromagnetic chuck, starting an overturning hydraulic system, overturning the green body and the side plates by-90 degrees, and enabling a peeling device to move from top to bottom to scrape scraps; the overturning hydraulic system is started to overturn to the initial position, and the blank body and the side plates are hoisted to the steam curing trolley in front of the kettle by the semi-finished product hoisting tool;
fifth, the autoclaved curing is carried out,
the autoclaved trolley fully loaded with the block green body is sent into an autoclave through a ferry vehicle to carry out high-temperature and high-pressure autoclaved maintenance; the autoclave adopts thermal control type centralized control and automatically controls the temperature and the pressure; a secondary instrument display and alarm for temperature and pressure and a kettle door safety device are arranged in the control room, and the use standard and safety protection measures of the pressure container are emphasized, so that the production safety and the realization of a maintenance process system are ensured; specifically, during autoclaved curing, controlling the time for entering and exiting the kettle to be 0.5h; when vacuumizing, controlling the pressure to be 0-0.06MPa and the time to be 0.5h; when the pressure is increased, the control pressure is 0.06-1.3MPa, and the time is 1h; at constant pressure, controlling the pressure to be 1.3MPa and the time to be 5 hours; when in depressurization, the pressure is controlled to be 1.3-0MPa, and the time is 1h; the steamed green bodies are piled, grouped and placed, and the separated die bodies are transported to a die assembly area by a trolley to be cleaned and assembled for recycling; the tail gas in the autoclave is sent to a resting room or recycled to the boiler room for preheating water through a pipeline;
sixthly, the board is broken off and packaged,
after the products are discharged from the kettle, stacking is carried out after the procedures of ferrying, finished product lifting, automatic breaking, conveying, overhauling and packaging, and the products which are processed into stacks are directly stacked in a finished product field by a forklift.
Wherein the volume weight of the ingredients is 600kg/m 3 B06-grade sand aerated concrete block as an example, its designThe mixing proportion comprises the following materials in percentage by mass: lime: and (3) cement: gypsum=70%: 17%:10%:3%; also comprises 500g/m aluminum powder 3 The method comprises the steps of carrying out a first treatment on the surface of the The water-material ratio is 0.6; the machine-made sand-fixing waste material comprises tailing sand; wherein, each component in the tailing sand comprises the following components in percentage by weight: siO (SiO) 2 ≥60%，K 2 O+Na 2 O≤5%，Cl - Less than or equal to 0.03 percent, mica less than or equal to 1.00 percent and SO 3 Less than or equal to 2.00 percent and less than or equal to 8.00 percent of clay. The lime is quicklime. The cement is standard 325# or 425# cement. The method also comprises the steps of recycling the waste water and the waste material generated in the production process, and recycling the recycled waste water and waste material by a waste material stirrer without external discharge; the waste slurry is stored and then is matched with the raw materials for secondary use.
Example 2
The method for accurately metering slurry in an autoclaved aerated concrete production facility as shown in fig. 2 is operated in substantially the same manner as in example 1, wherein the machine-made sand-setting waste material comprises fly ash.
Example 3
The method for accurately metering the sizing agent of the autoclaved aerated concrete production equipment is basically the same as that of the embodiment 1, wherein the dosage according to the volume weight is 700kg/m 3 For example, the B06-grade sand aerated concrete block comprises the following materials in percentage by mass: lime: and (3) cement: gypsum=68%: 13%:16%:3%; also comprises 600g/m of aluminum powder 3 The method comprises the steps of carrying out a first treatment on the surface of the The water-material ratio is 0.7; the machine-made sand-fixing waste materials comprise tailing sand seeds.
Example 4
The method for accurately metering the slurry of the autoclaved aerated concrete production equipment is basically the same as that of the embodiment 1, wherein in the first step, raw material processing is carried out, and the consumption of lime per hour is 4.5t; the product lime can be stored in a warehouse after being ground by a 1.83 x 7m dry ball mill or purchased; secondly, batching, wherein the usage amount of tailing sand per hour is used when the slurry is prepared and molded: 18.6t; the tailing sand can be directly pulped, and 3 slurry tanks with 50m thick liquid can meet the use requirements; thirdly, cutting is stopped, and when cutting and forming are carried out, an air overturning type full-automatic step-by-step type cutting machine is selected as the cutting machine; the cutting modulus per hour is calculated as follows: (300000/300) m/(4×1.2×0.6) m×0.97/22.5=12 modes; the cutting cycle is as follows: 60 ≡12=5 min (> 3min for casting time); and fifthly, autoclaved curing, namely selecting 8 autoclaves with phi of 2.05X31.5m according to the whole plant planning, and loading 6 autoclaves in each autoclave.
The above embodiments are merely preferred embodiments of the present invention, and all changes and modifications that come within the meaning and range of equivalency of the structures, features and principles of the invention are therefore intended to be embraced therein.
Claims (9)
1. The accurate slurry metering method of the autoclaved aerated concrete production equipment is characterized by comprising the following steps of:
in the first step, the raw materials are processed,
(1) Cement of lime-cement mixed calcareous system is selected as raw material; taking out the cement from the cylinder warehouse, and loading the cement into a proportioning bin for storage;
(2) Stirring and screening the machine-made sand-solid waste materials to obtain particles with the granularity of 160-180 meshes, and conveying the particles into a pulping pool for pulping; then the slurry is conveyed into a slurry mixing tank by a submerged conveying pump for slurry preparation; after the sizing agent is qualified, the sizing agent is conveyed to a sizing agent storage tank for storage by a submerged conveying pump;
(3) Lime and gypsum are crushed and ball milled firstly after entering a factory, and are continuously crushed into particles with the granularity less than or equal to 25mm, and the particles are respectively sent into a bin for storage by a bucket elevator through a three-way chute; lime and gypsum particles are respectively fed by respective speed-regulating belt scales according to a certain proportion, enter a ball mill through respective blanking sliders to be mixed and ground, and are lifted into a cementing bin through a hopper to be stored for standby after the fineness of the mixture reaches 3500-4000 cm/g;
in the second step, the materials are mixed,
sequentially adding the metered mortar, the mixed cementing material and the cement into a pouring stirrer according to the proportion for mixing and stirring, and introducing a certain amount of steam into the stirrer according to the technological requirement during stirring to ensure that the temperature of the slurry in the stirrer reaches about 40-45 ℃ and the stirring time is 3-4min; then, opening a lower valve of the aluminum powder paste stirrer, enabling the aluminum powder paste to flow into a pouring stirrer, and mixing and stirring for less than 40 seconds; then pouring the slurry into a mould, and conveying the slurry to a slurry metering scale through a slurry pump provided with a frequency converter in the slurry pouring and conveying process; during conveying, the PLC is used for controlling the action of the frequency converter, so that the rotating speed of a driving motor of the slurry pump is regulated; when the initial preset value is reached, the frequency of the input current of the motor is reduced by utilizing the frequency converter to reduce the rotating speed of the motor; meanwhile, the opening and closing angle of the pneumatic butterfly valve is matched at the slurry outlet to control the flow of the slurry, so that a practically required set value is achieved; the whole period is controlled to be 3-4min;
third, the cutting is stopped still,
transferring the mould to a cutting area after the foaming stillness meets the cutting requirement, disassembling the separating mould by a turnover mechanism, turning over the blank by 90 degrees and placing the blank on a trolley; the green body of the trolley device realizes six-sided cutting of the green body to reach the set specification through longitudinal cutting, transverse cutting and other working procedures;
fourth, turning over to remove the waste skin,
placing the cut green body and the side plates on a small pulley of a scrap removing overturning table by a semi-finished product lifting tool, starting an electromagnetic chuck, starting an overturning hydraulic system, overturning the green body and the side plates by-90 degrees, and enabling a peeling device to move from top to bottom to scrape scraps; the overturning hydraulic system is started to overturn to the initial position, and the blank body and the side plates are hoisted to the steam curing trolley in front of the kettle by the semi-finished product hoisting tool;
fifth, the autoclaved curing is carried out,
the autoclaved trolley fully loaded with the block green body is sent into an autoclave through a ferry vehicle to carry out high-temperature and high-pressure autoclaved maintenance; the autoclave adopts thermal control type centralized control and automatically controls the temperature and the pressure; the steamed green bodies are piled, grouped and placed, and the separated die bodies are transported to a die assembly area by a trolley to be cleaned and assembled for recycling; the tail gas in the autoclave is sent to a resting room or recycled to the boiler room for preheating water through a pipeline;
sixthly, the board is broken off and packaged,
after the products are discharged from the kettle, stacking is carried out after the procedures of ferrying, finished product lifting, automatic plate breaking, conveying and packaging, and the products which are processed into stacks are directly stacked in a finished product field by a forklift.
2. The method for accurately metering slurry of autoclaved aerated concrete production equipment as claimed in claim 1, wherein the volume weight is 400-700kg/m when the slurry is mixed in the second step 3 The design and mixing proportion of the aerated concrete block comprises the following materials in percentage by mass: lime: and (3) cement: gypsum=60 to 75%: 15-18%: 9-11%: 2-5%; also comprises 400-600 g/m of aluminum powder 3 The method comprises the steps of carrying out a first treatment on the surface of the The water-material ratio is 0.6-0.8.
3. The method for accurately metering slurry for autoclaved aerated concrete production equipment as recited in claim 1 wherein said machine-made sand-setting waste material comprises one or both of tailing sand and fly ash.
4. The method for accurately metering slurry for autoclaved aerated concrete production equipment as recited in claim 1 wherein said lime is quicklime.
5. The method for accurately metering slurry for autoclaved aerated concrete production equipment as recited in claim 1 wherein said cement is standard 325# or 425# cement.
6. The method for accurately metering the slurry of the autoclaved aerated concrete production equipment as claimed in claim 1, wherein the specific operation steps of the static cutting in the third step are as follows: (1) After casting, carding bubbles, transferring the die to a resting area for initial gas generating and setting, wherein the temperature of the resting area is 40-45 ℃, and resting for 120-150min; pulling out the resting chamber after the cutting strength is reached; (2) After the stationary stop meets the cutting requirement, transferring the die to a cutting area, disassembling the separating die by a turnover mechanism, turning over the blank body by 90 degrees and placing the blank body on a trolley; the trolley device conveys the green body to realize six-face cutting of the green body to reach the set specification through the procedures of longitudinal cutting, transverse cutting and the like.
7. The method for accurately metering slurry in an autoclaved aerated concrete production facility as recited in claim 6 wherein the green body has a strength of 0.15-0.18MPa after rest.
8. The method for accurately metering the slurry of the autoclaved aerated concrete production equipment according to claim 1, wherein the time for entering and exiting the kettle is controlled to be 0.5h during the autoclaved curing in the fifth step; when vacuumizing, controlling the pressure to be 0-0.06MPa and the time to be 0.5h; when the pressure is increased, the control pressure is 0.06-1.3MPa, and the time is 1h; at constant pressure, controlling the pressure to be 1.3MPa and the time to be 5 hours; when the pressure is reduced, the pressure is controlled to be 1.3-0MPa, and the time is 1h.
9. The method for accurately metering the slurry of the autoclaved aerated concrete production equipment according to claim 1, further comprising the steps of recovering waste water and waste materials generated in the production process, and recycling the recovered waste water and waste materials by a waste mixer without external discharge; the waste slurry is stored and then is matched with the raw materials for secondary use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311036507.8A CN117021363B (en) | 2023-08-17 | 2023-08-17 | Accurate slurry metering method of autoclaved aerated concrete production equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311036507.8A CN117021363B (en) | 2023-08-17 | 2023-08-17 | Accurate slurry metering method of autoclaved aerated concrete production equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117021363A true CN117021363A (en) | 2023-11-10 |
| CN117021363B CN117021363B (en) | 2024-03-26 |
Family
ID=88640911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311036507.8A Active CN117021363B (en) | 2023-08-17 | 2023-08-17 | Accurate slurry metering method of autoclaved aerated concrete production equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117021363B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03223146A (en) * | 1990-01-30 | 1991-10-02 | Sumitomo Metal Mining Co Ltd | Production of steam-cured lightweight aerated concrete |
| CN103758274A (en) * | 2014-01-16 | 2014-04-30 | 太原钢铁(集团)有限公司 | Production method of aerated concrete panel |
| CN103964781A (en) * | 2014-05-04 | 2014-08-06 | 抚州市恒顺环保建材有限公司 | Autoclaved aerated concrete block and manufacturing process thereof |
| CN105000855A (en) * | 2015-06-30 | 2015-10-28 | 山东同德建材有限公司 | Autoclaved light sand aerated concrete blocks, and preparation method thereof |
| CN206030240U (en) * | 2016-08-20 | 2017-03-22 | 南阳市龙达工程机械有限公司 | Even batching unit of stabilized soil mixing plant pay -off |
| CN107553717A (en) * | 2017-08-25 | 2018-01-09 | 上海隧道工程有限公司 | A kind of full-automatic mud mixing system |
| CN209894230U (en) * | 2019-07-05 | 2020-01-03 | 广州论衡控制设备有限公司 | Intelligent accurate metering device |
| CN113459268A (en) * | 2021-08-16 | 2021-10-01 | 王荣 | Preparation method of novel aerated block brick |
-
2023
- 2023-08-17 CN CN202311036507.8A patent/CN117021363B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03223146A (en) * | 1990-01-30 | 1991-10-02 | Sumitomo Metal Mining Co Ltd | Production of steam-cured lightweight aerated concrete |
| CN103758274A (en) * | 2014-01-16 | 2014-04-30 | 太原钢铁(集团)有限公司 | Production method of aerated concrete panel |
| CN103964781A (en) * | 2014-05-04 | 2014-08-06 | 抚州市恒顺环保建材有限公司 | Autoclaved aerated concrete block and manufacturing process thereof |
| CN105000855A (en) * | 2015-06-30 | 2015-10-28 | 山东同德建材有限公司 | Autoclaved light sand aerated concrete blocks, and preparation method thereof |
| CN206030240U (en) * | 2016-08-20 | 2017-03-22 | 南阳市龙达工程机械有限公司 | Even batching unit of stabilized soil mixing plant pay -off |
| CN107553717A (en) * | 2017-08-25 | 2018-01-09 | 上海隧道工程有限公司 | A kind of full-automatic mud mixing system |
| CN209894230U (en) * | 2019-07-05 | 2020-01-03 | 广州论衡控制设备有限公司 | Intelligent accurate metering device |
| CN113459268A (en) * | 2021-08-16 | 2021-10-01 | 王荣 | Preparation method of novel aerated block brick |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117021363B (en) | 2024-03-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102206095B (en) | Aerated concrete building block and preparation technology thereof | |
| CN103758274B (en) | A kind of manufacture method of aerated concrete panel | |
| CN101412633B (en) | Method for preparing aerated concrete from phosphate slag | |
| CN103964781A (en) | Autoclaved aerated concrete block and manufacturing process thereof | |
| CN103193447A (en) | Autoclaved aerated concrete brick prepared by utilizing pulverized fuel ash and preparation method thereof | |
| CN103626464B (en) | A kind of production technique of autoclave aerated concrete building block | |
| CN108033750A (en) | A kind of autoclave aerated concrete building block and its production technology | |
| CN101342764A (en) | Continuous pouring product line for multifunctional wall combined large plate and fibrous gypsum plate | |
| CN101713229B (en) | Autoclaved aerated concrete building block produced from copper ore tails and process thereof | |
| CN104030722A (en) | Production technology of aerated concrete block | |
| CN103396155B (en) | Aerated concrete block and preparation method thereof | |
| CN106278298A (en) | Separator material for casting residue slag pot grid and preparation method thereof | |
| CN106985270A (en) | A kind of steam-aerated concrete plate production line and its production method | |
| CN107363980A (en) | A kind of concrete locking plate mechanized method for making and system | |
| CN105751379A (en) | Manganese slag autoclaved aerated concrete building block production system | |
| CN202640568U (en) | Aggregate transition warehouse of double discharge port | |
| CN106986661A (en) | Aerating environmental protection process for producing bricks | |
| CN117021363B (en) | Accurate slurry metering method of autoclaved aerated concrete production equipment | |
| CN102717435B (en) | Method for feeding and discharging of aggregate transition bin and aggregate transition bin for realizing same | |
| CN108000679A (en) | A kind of air-entrained concrete building block production method | |
| CN104892018B (en) | A kind of preparation method of autoclaved fly ash porous brick | |
| CN106966674A (en) | A kind of autoclaved fly ash brick and its production technology | |
| CN115959876A (en) | Autoclaved aerated concrete slab and production process thereof | |
| CN102336535A (en) | Novel production process and formula of artificial stone | |
| CN104557109A (en) | Aerated concrete block and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |