CN118144069A - Uniform micro-foam gypsum board and preparation method thereof - Google Patents
Uniform micro-foam gypsum board and preparation method thereof Download PDFInfo
- Publication number
- CN118144069A CN118144069A CN202410446299.7A CN202410446299A CN118144069A CN 118144069 A CN118144069 A CN 118144069A CN 202410446299 A CN202410446299 A CN 202410446299A CN 118144069 A CN118144069 A CN 118144069A
- Authority
- CN
- China
- Prior art keywords
- foam
- water reducer
- liquid
- gypsum board
- water
- 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.)
- Pending
Links
- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 72
- 239000010440 gypsum Substances 0.000 title claims abstract description 72
- 239000006260 foam Substances 0.000 title claims abstract description 59
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 88
- 239000007788 liquid Substances 0.000 claims abstract description 60
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 59
- 229920005646 polycarboxylate Polymers 0.000 claims abstract description 41
- 238000005187 foaming Methods 0.000 claims abstract description 35
- 239000004088 foaming agent Substances 0.000 claims abstract description 30
- 239000000843 powder Substances 0.000 claims abstract description 29
- 239000002002 slurry Substances 0.000 claims abstract description 28
- 239000003365 glass fiber Substances 0.000 claims abstract description 20
- 238000002156 mixing Methods 0.000 claims abstract description 20
- 229920000881 Modified starch Polymers 0.000 claims abstract description 19
- DGVVJWXRCWCCOD-UHFFFAOYSA-N naphthalene;hydrate Chemical compound O.C1=CC=CC2=CC=CC=C21 DGVVJWXRCWCCOD-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000004368 Modified starch Substances 0.000 claims abstract description 16
- 235000019426 modified starch Nutrition 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 13
- 239000000701 coagulant Substances 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 238000005520 cutting process Methods 0.000 claims abstract description 5
- 238000001035 drying Methods 0.000 claims abstract description 5
- 238000001125 extrusion Methods 0.000 claims abstract description 5
- 238000004806 packaging method and process Methods 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 238000007711 solidification Methods 0.000 claims abstract description 5
- 230000008023 solidification Effects 0.000 claims abstract description 5
- 241000132536 Cirsium Species 0.000 claims abstract description 4
- 238000009966 trimming Methods 0.000 claims abstract description 4
- 238000007790 scraping Methods 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 3
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Inorganic materials [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 3
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 claims description 3
- 239000013078 crystal Substances 0.000 claims description 3
- 239000011507 gypsum plaster Substances 0.000 claims description 3
- GQWNECFJGBQMBO-UHFFFAOYSA-N Molindone hydrochloride Chemical compound Cl.O=C1C=2C(CC)=C(C)NC=2CCC1CN1CCOCC1 GQWNECFJGBQMBO-UHFFFAOYSA-N 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 239000011148 porous material Substances 0.000 description 8
- 238000000889 atomisation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
The invention discloses a uniform micro-foam gypsum board and a preparation method thereof, wherein the method comprises the steps of feeding calcined gypsum powder, glass fiber and a coagulant into a mixing reamer, uniformly mixing and then conveying the mixture into a stirrer; adding naphthalene water reducer powder, liquid polycarboxylate water reducer, foaming agent, water and modified starch into a stirrer to be uniformly stirred, so as to form uniform gypsum slurry; and continuously pouring the gypsum slurry between the upper layer of facing paper and the lower layer of facing paper, and preparing a finished product of the thistle board by extrusion molding, solidification, cutting, drying, trimming, edge sealing and packaging. According to the invention, the polycarboxylate water reducer is added on the basis of the existing naphthalene water reducer production process, and the mode of adding the polycarboxylate water reducer and the foaming agent after mixing and foaming is selected on the addition mode, so that the polycarboxylate water reducer is uniformly distributed on the surface of the foam, is easier to fuse with the slurry after contacting the slurry, improves the uniformity of the slurry, and reduces the diameter of the foam holes of the board core.
Description
Technical Field
The invention relates to the technical field of gypsum board preparation, in particular to a uniform micro-foam gypsum board and a preparation method thereof.
Background
The gypsum board is more and more sought by consumers due to the characteristics of convenient processing, environmental protection and the like. The paper gypsum board is prepared by comprehensively utilizing industrial waste residue desulfurization gypsum of a power plant, preparing building gypsum powder through calcination and grinding, stirring the building gypsum powder, foaming agent, water reducing agent, starch, glass fiber, coagulant, water and other dry and wet materials into uniform gypsum slurry through a stirrer, continuously pouring the uniform gypsum slurry between an upper layer of facing paper and a lower layer of facing paper, and preparing the building gypsum powder through extrusion molding, solidification, cutting, drying, edge sawing, edge sealing and packaging.
The cells of the paper surface gypsum board core are key control indexes for the production of the paper surface gypsum board, so that the sales is influenced due to the fact that the foaming is too large, the surface density of the gypsum board is not reduced due to the fact that the foaming is too small, the bonding performance of the facing paper can be influenced due to the fact that the foaming is uneven, and the quality of the gypsum board is influenced.
The diameter of the cells of the ordinary paper-surface gypsum board core produced by the existing gypsum board preparation method can be controlled to be only between 0.4 and 0.6mm, the pore diameters of the cells are larger, the uniformity of the cells is poor, and the product quality is affected.
Disclosure of Invention
The invention aims to provide a uniform micro-bubble gypsum board and a preparation method thereof, which are used for solving the technical problems of overlarge and nonuniform pore diameter of a gypsum board core prepared by the gypsum board preparation method in the prior art.
In order to solve the technical problems, the invention specifically provides the following technical scheme:
as a first aspect of the present invention, there is provided a method for preparing a uniform micro-foam gypsum board, comprising the steps of:
mixing gypsum powder, glass fiber and coagulant in a mixing reamer, and conveying the mixture into a stirrer;
Adding naphthalene water reducer powder, liquid polycarboxylate water reducer, foaming agent, water and modified starch into a stirrer to be uniformly stirred, so as to form uniform gypsum slurry;
And continuously pouring the gypsum slurry between the upper layer of facing paper and the lower layer of facing paper, and preparing a finished product of the thistle board by extrusion molding, solidification, cutting, drying, trimming, edge sealing and packaging.
Further, the liquid polycarboxylate water reducer and the foaming agent are respectively metered and conveyed to a mixing pump before being added, and water is added into the mixing pump for uniform mixing;
After being mixed uniformly, the mixture enters foaming equipment together with compressed air to form uniform foam, and then is added into a discharge cylinder of a mixer to be mixed uniformly with other uniformly mixed materials, so that uniform gypsum slurry is formed.
Further, the solid content of the liquid polycarboxylate water reducer is 40%, and the foaming agent is liquid sodium dodecyl sulfate foaming agent with the solid content of 35%;
Wherein, liquid polycarboxylate water reducer: foaming agent: the weight ratio of the water is 1:2-3:200-300.
Further, the components of the raw materials for producing the gypsum board are as follows in parts by weight: 100 parts of plaster of paris powder, 65-80 parts of total water, 0.3-0.7 part of coagulant, 0.3-0.6 part of naphthalene water reducer powder, 0.16-0.4 part of modified starch, 0.12-0.3 part of glass fiber, 0.02-0.06 part of foaming agent and 0.01-0.02 part of polycarboxylate water reducer.
Further, the crystal water content of the calcined gypsum powder is 5.0-5.5%, and the loose volume weight of the calcined gypsum powder is 750-830 g/L;
The glass fiber is chopped glass fiber, the diameter of a monofilament of the chopped glass fiber is 15 mu m, and the length of the chopped glass fiber is 6-15 mm;
The modified starch is modified corn starch, the gelatinization temperature is 65-80 ℃, and the modified starch is uniformly mixed with water before being added;
wherein the weight ratio of the modified starch to the water is 1:10-20;
The naphthalene water reducer powder is dissolved in water before being added;
wherein the weight ratio of the naphthalene water reducer powder to the water is 1:3-5.
Further, the foaming equipment for realizing the common foaming of the liquid polycarboxylate water reducer and the foaming agent comprises a shell, wherein the top of the shell is provided with a liquid inlet, the side edge of the shell is provided with an air inlet and a foaming outlet, a rotating shaft is arranged in the shell, and the outer surface of the rotating shaft is fixedly connected with a plurality of rotating plates;
At least one slide bar is fixedly connected between two adjacent rotating plates, a plurality of filter screens are sleeved on the outer surface of the slide bar, the filter screens are in sliding connection with the outer surface of the slide bar, springs are fixedly connected between the rotating plates and the adjacent filter screens and between the adjacent filter screens, the adjacent filter screens are not contacted, the filter screens can do circular motion along with rotation of the rotating shaft, and foam is assisted by continuous vibration during circular motion.
Further, be equipped with the lid on the inlet, the lid is inside to be equipped with the atomizing dish, the lid outside is equipped with the motor, motor output shaft and atomizing dish fixed connection, lid one side is equipped with the feed liquor pipe, and the feed liquor pipe output sets up at atomizing dish top for liquid flow direction atomizing dish in the feed liquor pipe, the atomizing dish rotates under the drive of motor, thereby makes the liquid on the atomizing dish centrifugal motion, makes liquid get rid of the lid inner wall and forms the droplet and be atomized, falls into the casing inside under the action of gravity.
Further, the center of the top of the atomizing disk is higher than the edge of the top of the atomizing disk, and the top of the atomizing disk is fixedly connected with a plurality of drainage plates which are arranged in an arc shape.
Further, one end of the rotating plate far away from the rotating shaft is fixedly connected with a scraping plate attached to the inner wall of the shell, so that the scraping plate moves circularly along with the rotation of the rotating plate, and then the scraping plate scrapes the liquid on the inner wall of the shell and flows to the filter screen to be foamed;
The novel atomizing device is characterized in that a water pump is arranged on one side of the shell, the input end of the water pump is communicated with the bottom of the shell, the output end of the water pump is communicated with the cover body, the output end of the water pump is arranged at the top of the atomizing disc, unfoamed liquid in the shell is conveyed to the top of the atomizing disc again through the water pump to be atomized, and then the liquid is foamed in the shell.
As a second aspect of the present invention, there is provided a uniform micro-foam gypsum board prepared by the above-described preparation method.
Compared with the prior art, the invention has the following beneficial effects:
According to the invention, the polycarboxylate water reducer is added on the basis of the existing naphthalene water reducer production process, and the mode of adding the polycarboxylate water reducer and the foaming agent after mixing and foaming is selected on the addition mode, so that the polycarboxylate water reducer is uniformly distributed on the surface of the foam, is easier to fuse with the slurry after contacting the slurry, improves the uniformity of the slurry, and can reduce the surface tension of the foam, reduce the diameter of the foam holes of the board core to be between 0.2 and 0.4mm, improve the uniformity of the foam holes of the board core and improve the quality of the gypsum board.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those of ordinary skill in the art that the drawings in the following description are exemplary only and that other implementations can be obtained from the extensions of the drawings provided without inventive effort.
FIG. 1 is a flow chart of the adding process of the liquid polycarboxylate water reducer and the foaming agent;
FIG. 2 is a schematic view of the structure of the bubbling device in the present invention;
FIG. 3 is a schematic diagram of a connection structure between a slide bar and a filter screen according to the present invention;
FIG. 4 is a schematic view of a filter screen according to the present invention;
Fig. 5 is a schematic diagram of a connection structure of an atomizing disk and a drainage plate according to the present invention.
Reference numerals in the drawings are respectively as follows:
10-a shell; 20-rotating shaft; 30-a cover;
11-a liquid inlet; 12-air inlet; 13-a foam outlet;
21-a rotating plate; 22-slide bar; 23-filtering net; 24-spring; 25-scraping plate; 26-a water pump;
31-an atomizing disk; 32-an electric motor; 33-a liquid inlet pipe; 34-drainage plate.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, the invention provides a preparation method of a uniform micro-foam gypsum board, which mainly adopts a mode of adding a polycarboxylate water reducer and a foaming agent after mixing and foaming in an adding mode, so that the polycarboxylate water reducer is uniformly distributed on the surface of foam, and the uniformity of foam holes of a board core is improved.
The preparation method comprises the following steps:
mixing gypsum powder, glass fiber and coagulant in a mixing reamer, and conveying the mixture into a stirrer;
Adding naphthalene water reducer powder, liquid polycarboxylate water reducer, foaming agent, water and modified starch into a stirrer to be uniformly stirred, so as to form uniform gypsum slurry;
And continuously pouring the gypsum slurry between the upper layer of facing paper and the lower layer of facing paper, and preparing a finished product of the thistle board by extrusion molding, solidification, cutting, drying, trimming, edge sealing and packaging.
The cells of the paper surface gypsum board core are key control indexes for the production of the paper surface gypsum board, so that the sales is influenced due to the fact that the foaming is too large, the surface density of the gypsum board is not reduced due to the fact that the foaming is too small, the bonding performance of the facing paper can be influenced due to the fact that the foaming is uneven, and the quality of the gypsum board is influenced.
The diameter of the cells of the ordinary paper-surface gypsum board core produced by the existing gypsum board preparation method can be controlled to be only between 0.4 and 0.6mm, the pore diameters of the cells are larger, and the uniformity of the cells is poor, so that the quality of products is affected, and therefore, the size of the cells of the gypsum board core is reduced, the cells are uniform, and the problem that the existing gypsum board production is difficult to solve is solved.
According to the invention, the polycarboxylate water reducer is added on the basis of the existing naphthalene water reducer production process, and the mode of adding the polycarboxylate water reducer and the foaming agent after mixing and foaming is selected on the addition mode, so that the polycarboxylate water reducer is uniformly distributed on the surface of the foam, is easier to fuse with the slurry after contacting the slurry, improves the uniformity of the slurry, and can reduce the surface tension of the foam, reduce the diameter of the foam holes of the board core to be between 0.2 and 0.4mm, improve the uniformity of the foam holes of the board core and improve the quality of the gypsum board.
Further, in order to make the prepared board core have smaller and uniform pores, the liquid polycarboxylate water reducer and the foaming agent are respectively and quantitatively conveyed to a mixing pump before being added, and water is added into the mixing pump to be uniformly mixed;
After being mixed uniformly, the mixture enters foaming equipment together with compressed air to form uniform foam, and then is added into a discharge cylinder of a mixer to be mixed uniformly with other uniformly mixed materials, so that uniform gypsum slurry is formed.
According to the application, the polycarboxylate water reducer is creatively mixed with the foaming agent and then added into the slurry, so that the polycarboxylate water reducer can be uniformly distributed on the surface of the foam, the foam is easier to fuse with the slurry after contacting the slurry, the uniformity of the slurry is improved, and the consumption of the naphthalene water reducer is saved.
Meanwhile, the polycarboxylate water reducer can reduce the surface tension of foam, so that the foam with large pore diameter is easier to break, the diameter of the foam is more uniform, and the diameter of the foam can be controlled to be smaller on the premise that the foam is uniform, so that the ratio of the actual foam with the diameter of 0.2-0.4mm is more than 80%, the adhesive property of the facing paper is not influenced, and the overall quality of the gypsum board is improved.
The polycarboxylate water reducer is mixed in the foaming process, so that the problem of slurry fluidity loss can be improved, the agglomeration of a charging barrel of a mixer is avoided, and the gypsum board slurry is more uniform.
As a preferred embodiment, the solid content of the liquid polycarboxylate water reducer is 40%, and the foaming agent is liquid sodium dodecyl sulfate foaming agent with the solid content of 35%;
Wherein, liquid polycarboxylate water reducer: foaming agent: the weight ratio of the water is 1:2-3:200-300.
The polycarboxylate water reducer can be uniformly distributed on the surface of the foam by a special proportion, so that the foam holes are more uniform.
The specific raw material proportion used in the production method provided by the application is further described below, and the raw material components for producing the gypsum board are respectively as follows in parts by weight: 100 parts of plaster of paris powder, 65-80 parts of total water, 0.3-0.7 part of coagulant, 0.3-0.6 part of naphthalene water reducer powder, 0.16-0.4 part of modified starch, 0.12-0.3 part of glass fiber, 0.02-0.06 part of foaming agent and 0.01-0.02 part of polycarboxylate water reducer.
Specifically, the crystal water content of the calcined gypsum powder is 5.0-5.5%, and the loose volume weight of the calcined gypsum powder is 750-830 g/L;
The glass fiber is chopped glass fiber, the diameter of a monofilament of the chopped glass fiber is 15 mu m, and the length of the chopped glass fiber is 6-15 mm;
The modified starch is modified corn starch, the gelatinization temperature is 65-80 ℃, and the modified starch is uniformly mixed with water before being added;
wherein the weight ratio of the modified starch to the water is 1:10-20;
The naphthalene water reducer powder is dissolved in water before being added;
wherein the weight ratio of the naphthalene water reducer powder to the water is 1:3-5.
On the basis of the existing production method, the polycarboxylate water reducer is added, and the polycarboxylate water reducer is in a special proportion relationship, so that the polycarboxylate water reducer can be uniformly distributed on the surface of the foam, the foam holes are more uniform, the polycarboxylate water reducer can reduce the surface tension of the foam, the foam with large pore diameter is easier to break, the diameter of the foam holes is more uniform, and the foam holes are smaller.
The prior foaming equipment can not generate foam with uniform size, the pore diameter of common bubbles is larger, and in order to match the polycarboxylate water reducer and the foaming agent to generate foam with smaller and more uniform pore diameter, the foaming equipment is further improved, as shown in figure 2.
The foaming equipment for realizing the common foaming of the liquid polycarboxylate water reducer and the foaming agent comprises a machine shell 10, wherein a liquid inlet 11 is formed in the top of the machine shell 10, an air inlet 12 and a foam outlet 13 are formed in the side edge of the machine shell 10, a rotating shaft 20 is arranged in the machine shell 10, and a plurality of rotating plates 21 are fixedly connected to the outer surface of the rotating shaft 20;
At least one slide bar 22 is fixedly connected between two adjacent rotating plates 21, a plurality of filter screens 23 are sleeved on the outer surface of the slide bar 22, the filter screens 23 are slidably connected on the outer surface of the slide bar 22, springs 24 are fixedly connected between each rotating plate 21 and each adjacent filter screen 23 and between each adjacent filter screens 23, so that adjacent filter screens 23 are not contacted, the filter screens 23 do circular motion along with rotation of the rotating shaft 20, and meanwhile, the filter screens 23 vibrate continuously to assist foaming during the circular motion.
When in use, the rotation shaft 20 is driven by an external driver to rotate, so as to drive the rotation plate 21 to rotate, and the foaming liquid is contacted with air to foam;
In order to improve the foaming efficiency and quality, a movable filter screen 23 is arranged between two rotating plates 21, the rotating plates 21 rotate to drive the filter screen 23 to do circular motion, the filter screen 23 slides on the outer surface of a slide bar 22 under the action of centrifugal force, a spring 24 is stretched or compressed, meanwhile, under the action of the rebound force of the spring 24, the filter screen 23 vibrates and moves, the contact area of foaming liquid and air is improved, and the produced foam is more uniform and has smaller aperture.
In the prior art, the foaming liquid is pumped into the foaming equipment by the high-pressure pump, so that the foaming liquid can not be well contacted with air after reaching the foaming equipment, and a plurality of foaming liquids can not be well foamed to cause waste of the foaming liquid. To solve this problem, as shown in fig. 2 and 5.
Be equipped with lid 30 on the inlet 11, the inside atomizing dish 31 that is equipped with of lid 30, the lid 30 outside is equipped with motor 32, motor 32 output shaft and atomizing dish 31 fixed connection, lid 30 one side is equipped with feed liquor pipe 33, and feed liquor pipe 33 output sets up at atomizing dish 31 top for liquid flow direction atomizing dish 31 in the feed liquor pipe 33, atomizing dish 31 rotates under motor 32's drive, thereby makes the liquid on the atomizing dish 31 centrifugal motion, makes liquid get rid of the lid 30 inner wall and forms the droplet and be atomized, falls into inside the casing 10 under the action of gravity.
The atomizing disk 31 rotates under the drive of the motor 32, so that liquid on the atomizing disk 31 makes centrifugal motion, the liquid is thrown out onto the inner side surface of the cover body 30 and collides with the cover body 30 to generate atomized small liquid drops, the atomized small liquid drops are sprayed downwards under the action of gravity, and therefore the liquid is atomized and then enters the shell to foam, and the contact area of foaming liquid and air is increased.
The center of the top of the atomizing disk 31 is higher than the edge thereof, and the top of the atomizing disk 31 is fixedly connected with a plurality of drainage plates 34, and the drainage plates 34 are arc-shaped. So that the liquid at the top of the atomizing disk 31 is more easily thrown against the inner wall of the housing.
The liquid that is not foamed is accumulated inside the cabinet 10, causing waste, and foam is easily defoamed, as shown in fig. 2, in order to solve the problem.
The scraper 25 attached to the inner wall of the casing 10 is fixedly connected to one end of the rotating plate 21 far away from the rotating shaft 20, so that the scraper 25 moves circularly along with the rotation of the rotating plate 21, and then the scraper 25 scrapes the liquid on the inner wall of the casing 10 and flows to the filter screen 23 to be foamed; the scraper 25 always moves circularly against the inner wall of the casing 10 to scrape the liquid from the inner wall of the casing 10 and drain the liquid onto the filter screen 23 so that the liquid is foamed.
The water pump 26 is arranged on one side of the casing 10, the input end of the water pump 26 is communicated with the bottom of the casing 10, the output end of the water pump 26 is communicated with the cover body 30, the output end of the water pump 26 is arranged at the top of the atomizing disc 31, and unfoamed liquid in the casing 10 is conveyed to the top of the atomizing disc 31 again through the water pump 26 for atomization, and then is foamed in the casing 10.
Unfoamed liquid is then re-delivered by the water pump 26 to the atomizing disk 31 for re-atomization, avoiding wastage.
As a second aspect of the present invention, there is provided a uniform micro-foam gypsum board prepared by the above-described preparation method.
The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application, the scope of which is defined by the claims. Various modifications and equivalent arrangements of this application will occur to those skilled in the art, and are intended to be within the spirit and scope of the application.
Claims (10)
1. The preparation method of the uniform micro-foam gypsum board is characterized by comprising the following steps of:
mixing gypsum powder, glass fiber and coagulant in a mixing reamer, and conveying the mixture into a stirrer;
Adding naphthalene water reducer powder, liquid polycarboxylate water reducer, foaming agent, water and modified starch into a stirrer to be uniformly stirred, so as to form uniform gypsum slurry;
And continuously pouring the gypsum slurry between the upper layer of facing paper and the lower layer of facing paper, and preparing a finished product of the thistle board by extrusion molding, solidification, cutting, drying, trimming, edge sealing and packaging.
2. A method of preparing a uniform micro-foam gypsum board according to claim 1, wherein,
The liquid polycarboxylate water reducer and the foaming agent are respectively metered and conveyed to a mixing pump before being added, and water is added into the mixing pump for uniform mixing;
After being mixed uniformly, the mixture enters foaming equipment together with compressed air to form uniform foam, and then is added into a discharge cylinder of a mixer to be mixed uniformly with other uniformly mixed materials, so that uniform gypsum slurry is formed.
3. A method of preparing a uniform micro-foam gypsum board according to claim 2, wherein,
The solid content of the liquid polycarboxylate water reducer is 40%, and the foaming agent is liquid sodium dodecyl sulfate foaming agent with the solid content of 35%;
Wherein, liquid polycarboxylate water reducer: foaming agent: the weight ratio of the water is 1:2-3:200-300.
4. A method of preparing a uniform micro-foam gypsum board according to claim 3,
The components of the raw materials for producing the gypsum board are as follows in parts by weight: 100 parts of plaster of paris powder, 65-80 parts of total water, 0.3-0.7 part of coagulant, 0.3-0.6 part of naphthalene water reducer powder, 0.16-0.4 part of modified starch, 0.12-0.3 part of glass fiber, 0.02-0.06 part of foaming agent and 0.01-0.02 part of polycarboxylate water reducer.
5. The method for preparing uniform micro-foam gypsum board according to claim 4, wherein,
The crystal water content of the calcined gypsum powder is 5.0-5.5%, and the loose volume weight of the calcined gypsum powder is 750-830 g/L;
The glass fiber is chopped glass fiber, the diameter of a monofilament of the chopped glass fiber is 15 mu m, and the length of the chopped glass fiber is 6-15 mm;
The modified starch is modified corn starch, the gelatinization temperature is 65-80 ℃, and the modified starch is uniformly mixed with water before being added;
wherein the weight ratio of the modified starch to the water is 1:10-20;
The naphthalene water reducer powder is dissolved in water before being added;
wherein the weight ratio of the naphthalene water reducer powder to the water is 1:3-5.
6. The method for preparing uniform micro-foam gypsum board according to claim 5, wherein,
The foaming equipment for realizing the common foaming of the liquid polycarboxylate water reducer and the foaming agent comprises a shell, wherein a liquid inlet is formed in the top of the shell, an air inlet and a foaming outlet are formed in the side edge of the shell, a rotating shaft is arranged in the shell, and a plurality of rotating plates are fixedly connected to the outer surface of the rotating shaft;
At least one slide bar is fixedly connected between two adjacent rotating plates, a plurality of filter screens are sleeved on the outer surface of the slide bar, the filter screens are in sliding connection with the outer surface of the slide bar, springs are fixedly connected between the rotating plates and the adjacent filter screens and between the adjacent filter screens, the adjacent filter screens are not contacted, the filter screens can do circular motion along with rotation of the rotating shaft, and foam is assisted by continuous vibration during circular motion.
7. The method for preparing uniform micro-foam gypsum board according to claim 6, wherein,
Be equipped with the lid on the inlet, the inside atomizing dish that is equipped with of lid, the lid outside is equipped with the motor, motor output shaft and atomizing dish fixed connection, lid one side is equipped with the feed liquor pipe, and the feed liquor pipe output sets up at atomizing dish top for liquid flow direction atomizing dish in the feed liquor pipe, the atomizing dish rotates under the drive of motor, thereby makes the liquid on the atomizing dish centrifugal motion, and the liquid is got rid of the lid inner wall and is formed the droplet and atomized, falls into the casing inside under the action of gravity.
8. The method for preparing uniform micro-foam gypsum board according to claim 7, wherein,
The center of the top of the atomizing disk is higher than the edge of the top of the atomizing disk, and the top of the atomizing disk is fixedly connected with a plurality of drainage plates which are arranged in an arc shape.
9. The method for preparing uniform micro-foam gypsum board according to claim 8, wherein,
One end of the rotating plate, which is far away from the rotating shaft, is fixedly connected with a scraping plate attached to the inner wall of the shell, so that the scraping plate moves circularly along with the rotation of the rotating plate, and then the scraping plate scrapes the liquid on the inner wall of the shell and flows to the filter screen to be foamed;
The novel atomizing device is characterized in that a water pump is arranged on one side of the shell, the input end of the water pump is communicated with the bottom of the shell, the output end of the water pump is communicated with the cover body, the output end of the water pump is arranged at the top of the atomizing disc, unfoamed liquid in the shell is conveyed to the top of the atomizing disc again through the water pump to be atomized, and then the liquid is foamed in the shell.
10. A uniform micro-foam gypsum board prepared by the method of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410446299.7A CN118144069A (en) | 2024-04-15 | 2024-04-15 | Uniform micro-foam gypsum board and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410446299.7A CN118144069A (en) | 2024-04-15 | 2024-04-15 | Uniform micro-foam gypsum board and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118144069A true CN118144069A (en) | 2024-06-07 |
Family
ID=91296828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410446299.7A Pending CN118144069A (en) | 2024-04-15 | 2024-04-15 | Uniform micro-foam gypsum board and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118144069A (en) |
-
2024
- 2024-04-15 CN CN202410446299.7A patent/CN118144069A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207446145U (en) | A kind of high-efficiency multi-stage mixer of liquid low ratio foamed ceramic silica gel production | |
| CN210846219U (en) | Raw material mixing device is used in silica gel production | |
| CN112917691A (en) | Light concrete and production process thereof | |
| CN111890623A (en) | Screening formula foam processing is with machine of sending out in advance | |
| CN118144069A (en) | Uniform micro-foam gypsum board and preparation method thereof | |
| CN208260656U (en) | It is a kind of for processing the binder agitating device of corrugated paper | |
| CN214718289U (en) | Cement crocus station is with raw materials premixing device | |
| CN210229678U (en) | Grinding type composite stirrer for production of crystallizer casting powder | |
| CN212288391U (en) | Polyurethane foaming agitating unit convenient to remove | |
| CN207722662U (en) | A kind of applying material supply mixing arrangement | |
| CN215359124U (en) | Mortar stirrer capable of mixing uniformly | |
| CN213260233U (en) | Aerated concrete block production dosing unit | |
| CN211537462U (en) | Emulsifying machine is used in plaster preparation | |
| CN211476568U (en) | Material mixing and drying device | |
| CN210187260U (en) | Environment-friendly aerated concrete waste recovery device | |
| CN112356295A (en) | Raw material mixing equipment for producing autoclaved aerated concrete blocks | |
| CN219334020U (en) | Raw material preparation device | |
| CN208180085U (en) | A kind of drawing-in device producing foaming telecommunication enclosures pipeline | |
| CN112847799A (en) | Full-automatic concrete foaming machine | |
| CN107932727B (en) | Mortar constant-temperature stirring and humidity control device | |
| CN112297214A (en) | Stirring and conveying device of brick making machine | |
| CN114536552A (en) | Raw material preparation device of light plastering gypsum mortar | |
| CN213471580U (en) | Stirring drum for wood crushed aggregates | |
| CN218795570U (en) | Corrugated box raw materials for production agitating unit | |
| CN219209632U (en) | Mixing tank for preparing foaming agent for foamed ceramics |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination |