WO2020155586A1

WO2020155586A1 - Gypsum slurry foaming processing method and device

Info

Publication number: WO2020155586A1
Application number: PCT/CN2019/097723
Authority: WO
Inventors: 王鹏起; 何亮; 武发德; 谭丹君; 白宏成; 杜伟肖; 王莹
Original assignee: 北新集团建材股份有限公司
Priority date: 2019-01-30
Filing date: 2019-07-25
Publication date: 2020-08-06
Also published as: CN111497015A; CN111497015B

Abstract

Disclosed are a gypsum slurry foaming processing method and device. The method comprises: step A, acquiring a mechanical structure parameter of a mixing machine for producing gypsum, parameter information of a gypsum slurry mixture for producing gypsum, and a working mode of the mixing machine; analyzing a foaming condition of the gypsum based on the mechanical structure parameter, the parameter information of the gypsum slurry mixture, and the working mode, so as to obtain an analysis result, wherein the analysis result comprises factors affecting the foaming situation of the gypsum; and carrying out foaming processing on the mixing machine or the gypsum according to the analysis result, and producing new gypsum based on the mixing machine and/or the parameter after being subjected to the foaming processing.

Description

Method and device for foaming treatment of gypsum slurry

Technical field

The embodiments of the present disclosure relate to but are not limited to the technical field of gypsum slurry foaming treatment, in particular to a gypsum slurry foaming treatment method and device.

Background technique

Gypsum is a monoclinic mineral. It is a hydrate with the main chemical component of calcium sulfate. It is a widely used industrial material and building material. The microporous structure and heating dehydration of gypsum and its products have excellent sound insulation and insulation. Heat and fire performance.

The mixer is one of the key equipment for the production of gypsum board, and its performance directly affects the performance of the gypsum slurry. At present, when the gypsum slurry is mixed according to the preset ratio, the gypsum powder will form a gypsum slurry when it meets water. , When the mixture of gypsum powder, foaming agent and water is mixed in the mixer or the feed tube under the action of external force, the partial mixing at the beginning reaches the overall uniform mixing state, and the dynamic equilibrium is reached at a certain moment, and then the mixing The uniformity will not be improved, and the separation and mixing will be repeated alternately. During the mixing process, the gypsum slurry has a high viscosity and bubbles are easy to appear. If the mixing is not uniform, there will still be agglomeration and bubbles. Due to uneven mixing or unstable slurry flow rate, it will eventually affect the drying process and the quality of the finished board. . During the mixing process of gypsum slurry, it is often necessary to add a foaming agent. The foaming agent can reduce weight, improve sound insulation performance, and enhance toughness. However, the foaming agent will be produced during the mixing process of the foaming agent and other raw materials in the mixer. A certain loss affects the foaming efficiency and the uniformity of gypsum board pores.

At present, with the rapid development of simulation technology, it is possible to pre-evaluate the foaming situation of gypsum slurry mixing through gypsum slurry mixing simulation in the design stage, which is conducive to discovering the weak links of the original design as soon as possible to optimize the entire process. Effective guidance during the process shortens the development cycle of new products and improves product performance. In view of this, the foaming analysis of gypsum slurry has become an important aspect of the mixing effect of gypsum slurry.

Summary of the invention

The following is an overview of the subject matter described in detail in this disclosure. This summary is not intended to limit the scope of protection required by the rights.

The present disclosure provides a foaming treatment method, including:

Step A: Obtain the mechanical structure parameters of the gypsum-producing mixer, the parameter information of the gypsum slurry mixture that produces the gypsum, and the working mode of the mixer;

Step B: Analyze the foaming condition of the gypsum based on the mechanical structure parameters, the parameter information of the gypsum slurry mixture, and the working mode to obtain an analysis result;

Step C: Determine new parameters and/or treatment methods according to the analysis results, and produce new gypsum based on the new parameters and/or treatment methods.

Optionally, the mechanical structure parameters of the mixer include: parameters of various parts of the mixer except for the stirring pin and stirring parameters;

Wherein, the parameters of each part of the mixer except the stirring pin at least include: the size and position of each part of the mixer except the stirring pin;

The stirring parameters include any one or more of the following information: the number, position, thickness and height of the stirring pins used, and the position, size and quantity of the feed inlet, water inlet and foaming agent inlet;

The parameter information of the gypsum slurry mixture includes any one or more of the following information: flow rate of water, flow rate of foaming agent, flow rate of gypsum powder, flow rate of water, flow rate of foaming agent, flow rate of gypsum powder , Solution viscosity of gypsum powder;

The working mode of the mixer includes the feeding mode of the mixer and the rotation speed of the motor.

Optionally, the analysis result includes: factors affecting the foaming condition of the gypsum include: the inlet of the foaming agent, the proportion of the foaming agent entering from different inlets, and the time of entering the foaming agent from different inlets.

Optionally, the step of determining new parameters and/or treatment methods according to the analysis results, and producing new gypsum based on the new parameters and/or treatment methods includes:

When producing new gypsum, control 70% of the blowing agent to enter from the second blowing agent inlet and 30% to enter from the blowing agent; or,

Control 50% of the blowing agent to enter from the blowing agent inlet, 20% from the second blowing agent inlet, and 30% from the third blowing agent inlet; or,

Control 50% of the blowing agent to enter from the blowing agent inlet, 20% from the second blowing agent inlet, and 30% from the third blowing agent inlet, and control the blowing agent to enter the blowing agent. The time period for the entry of the blowing agent inlet is 0 to a second, 0+n to a+n second, 0+2n to a+2n,...; the time period for controlling the blowing agent to enter the second blowing agent inlet It is b to c seconds, b+n to c+n seconds, b+2n to c+2n,...; the time period for controlling the blowing agent to enter the second blowing agent inlet is d to e seconds, d+ n to e+n seconds, d+2n to e+2n,..., and so on, until the blowing agent is used up in proportion in the three ports; where the values of a, b, c, d, e and f In each round, the time point when the blowing agent ends at the second blowing agent inlet or the third blowing agent inlet is earlier than in the next round, and the blowing agent enters from the blowing agent inlet Point of entry.

Optionally, the analysis result includes: the factors affecting the foaming condition of the gypsum include: the flow rate of water, the flow rate of the foaming agent, the flow rate of the gypsum powder, the solution viscosity of the gypsum powder, the flow rate of water, the foaming agent The flow rate and the flow rate of gypsum powder.

Control the flow rate of water between 1.8-2.6m/s;

The flow rate of the blowing agent is between 0.3-0.8m/s;

The flow velocity of gypsum powder is between 0.2-0.5m/s;

Control the solution viscosity of pure gypsum powder between 4000-5000cps;

The control water flow rate is 3.5-4.3t/h;

Control the flow rate of gypsum powder to 20-25t/h;

Control the flow rate of the blowing agent to 0.8-1.2t/h.

The flow rate of the control water is 2.26m/s;

The flow rate of the blowing agent is 0.57m/s;

The flow velocity of gypsum powder is 0.29m/s;

Control the solution viscosity of pure gypsum powder to 4400cps;

The control water flow rate is 4t/h;

Control the flow rate of gypsum powder to 22t/h;

Control the flow rate of the blowing agent to 1t/h.

Optionally, the analysis result includes: factors that affect the foaming condition of the gypsum include: feeding methods.

When producing new gypsum, the feeding method of screw conveying is used to control the foaming agent.

Optionally, after the step C, the method further includes: repeating the steps A-C until the new gypsum produced meets the preset foaming standard.

Optionally, the foaming standard means that 50% or more of the pore diameter of the gypsum board cells is between 300-550 microns, and the strength of the gypsum board reaches a preset standard.

Optionally, the preset standard for the strength of the gypsum board refers to that the average and/or minimum value of the transverse and longitudinal breaking load of the gypsum board reaches the preset standard, and different board thicknesses have different preset standards.

The present disclosure also provides a foaming analysis device, which includes a processor and a computer-readable storage medium. The computer-readable storage medium stores instructions. When the instructions are executed by the processor, any of the foregoing Foaming treatment method.

The beneficial effect of the embodiments of the present disclosure: by performing the foaming treatment, the foaming condition of the produced gypsum is better.

Other features and advantages of the present disclosure will be described in the following description, and partly become obvious from the description, or understood by implementing the present disclosure. The objectives and other advantages of the present disclosure can be realized and obtained through the structures specifically pointed out in the specification, claims and drawings.

Figure overview

The accompanying drawings are used to provide a further understanding of the technical solution of the present disclosure, and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present disclosure, and do not constitute a limitation to the technical solution of the present disclosure.

Figure 1 is one of the structural schematic diagrams of the mixer of the embodiment of the disclosure;

2 is a schematic cross-sectional structure diagram of the mixer of an embodiment of the disclosure;

FIG. 3 is one of the top structural schematic diagrams of the mixer of the embodiment of the disclosure;

4 is the second structural diagram of the mixer of the embodiment of the disclosure;

5 is a flowchart of a foaming processing method according to an embodiment of the disclosure;

Fig. 6 is an enlarged schematic diagram of the cells in the sampling site of the gypsum board according to an embodiment of the disclosure;

FIG. 7 is a schematic diagram of a gypsum board sampling site with bubbles less than 100 microns in an embodiment of the disclosure;

FIG. 8 is a schematic diagram of the cells of 100 μm-300 μm in the sampling site of the gypsum board according to an embodiment of the disclosure;

FIG. 9 is a schematic diagram of the cells in the sampling site of the gypsum board according to an embodiment of the present disclosure;

FIG. 10 is a distribution diagram of the proportion of cells with different pore diameters in the gypsum board according to an embodiment of the disclosure.

Detail

Hereinafter, the embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments in this application and the features in the embodiments can be combined with each other arbitrarily if there is no conflict.

The steps shown in the flowchart of the drawings may be executed in a computer system such as a set of computer-executable instructions. Also, although a logical sequence is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than here.

As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the structure of the mixer includes a casing 1. The top of the casing 1 is open, including a bottom and a cylindrical side wall; There is a turntable 2, which is provided with a water spin plate 11, and a plurality of groups of lower stirring groups are uniformly arranged in a plurality of radial directions of the turntable 2, and each group of the lower stirring group includes a plurality of lower stirring pins 3 and a stirring ear 4. When the turntable 2 rotates, it drives the water spinner 11 and multiple sets of lower mixing groups to rotate together; a motor is provided in the casing 1, which is connected to the rotating shaft of the turntable 2; the bottom of the side wall of the casing 1 is provided with slurry Outlet 5; above the casing 1 is provided with an upper cover 6, the upper cover 6 is provided with a water inlet 7, a feed port 8 and a blowing agent inlet 9, and the upper cover 6 is provided with a lower stirring pin 3 corresponding to the turntable 2 A plurality of upper stirring pins (not shown in the figure), wherein each lower stirring pin 3 corresponds to an upper stirring pin.

Wherein, the upper surface of the upper cover 6 refers to the side of the upper cover 6 facing away from the casing 1, and the lower surface of the upper cover 6 refers to the side of the upper cover 6 facing the casing 1.

The slurry and the slurry in the embodiments of the present disclosure are the same thing, and refer to a fluid mixture formed by stirring of gypsum, water, foaming agent, etc.

Wherein, as shown in Figure 2, the area corresponding to the water slinger 11 is the water slinging area, the area between the circumference of the water slinger 11 and the circle formed by the multiple stirring ears 4 is the mixing area, and the multiple stirring ears 4 are formed The area between the circle of and the side wall of the casing 1 is the slurry area.

Wherein, as shown in FIG. 4, the upper cover 6 is also provided with at least one set of auxiliary water inlets 71, a set of auxiliary water inlets 71 includes a plurality of auxiliary water inlets, and the upper cover 6 is optionally provided with two sets of auxiliary water inlets. The auxiliary water inlets 71 are located on both sides of the inlet 8 respectively.

Wherein, the water inlet 7 corresponds to the mixing zone, a part of the auxiliary water inlet 71 corresponds to the water throwing zone, and the other part corresponds to the mixing zone, that is to say, part of the water injected from the auxiliary water inlet 71 enters the throwing zone. Part of the water zone enters the mixing zone. Wherein, the water that will enter the water sling area is injected into the water sling groove (the groove formed by the sling plate and the circular side wall) of the sling plate 11 from the auxiliary water inlet 71, and passes through the wall surface near the sling groove and the turntable 2 The gap was thrown out. In this way, a part of the water enters through the water inlet 7 and a part of the water enters from the auxiliary water inlet 71. At least two places are flushed, which can make the mixing more uniform and the produced gypsum products of higher quality.

In an exemplary embodiment, as shown in FIG. 3, the edge of the turntable 2 is provided with tooth grooves 21,

In an exemplary embodiment, as shown in FIGS. 2 and 4, the upper cover 6 is further provided with a second blowing agent inlet 91 and/or a third blowing agent inlet (not shown in the figure). Wherein, the blowing agent inlet 9 corresponds to the mixing zone, that is, the blowing agent input from the blowing agent inlet 9 enters the mixing zone; the blowing agent input from the second blowing agent inlet 91 enters the slurry zone. A part of the edge enters the tooth groove 21 and a part enters the bottom of the casing 1; a slurry barrel is arranged below the slurry outlet 5, and the third foaming agent inlet is located above the slurry barrel.

As shown in FIG. 5, for the above-mentioned mixer structure, an embodiment of the present disclosure provides a gypsum slurry foaming treatment method, which includes:

S501: Obtain the mechanical structure parameters of the gypsum slurry mixer for producing gypsum, the parameter information of the gypsum slurry mixture for producing the gypsum, and the working mode of the mixer;

S502: Analyze the foaming condition of the gypsum based on the mechanical structure parameters, the parameter information of the gypsum slurry mixture, and the working mode to obtain an analysis result;

S503: Determine new parameters and/or treatment methods according to the analysis results, and produce new gypsum based on the new parameters and/or treatment methods.

Wherein, in step S501, the mechanical structure parameters of the gypsum slurry mixer include: parameters of various parts of the mixer except for the stirring pin and stirring parameters.

Wherein, the parameters of the various parts of the mixer except the stirring pin include at least: the size and position of the various parts of the mixer except the stirring pin, such as the size and position of the mixer turntable, the size and position of the mixer's water slinging plate, The size and location of the slurry outlet, the size and location of the wedge-shaped outlet of the turntable, etc.;

Wherein, the stirring parameter includes any one or more of the following information: the number, position, thickness and height of the stirring pins used, and the position, size and quantity of the feed inlet, water inlet and blowing agent inlet .

The parameter information of the gypsum slurry mixture includes any one or more of the following information: flow rate of water, flow rate of foaming agent, flow rate of gypsum powder, flow rate of water, flow rate of foaming agent, flow rate of gypsum powder , Solution viscosity of gypsum powder, etc.

The working mode of the mixer includes information such as the feeding mode of the mixer and the rotation speed of the motor.

The parameter information of the gypsum slurry mixture may also include: the initial flow rate, weight, concentration, or viscosity of the admixture, etc. The admixture may include: water reducer, retarder, coagulant, etc.

Wherein, in the step S502, the analysis result includes: the factors affecting the foaming condition of the gypsum include: the inlet of the blowing agent, the proportion of the blowing agent entering from different inlets, and the blowing agent entering from different inlets time.

Wherein, the step S503, determining new parameters and/or processing methods according to the analysis results, and producing new gypsum based on the new parameters and/or processing methods includes:

When producing new gypsum, control 70% of the blowing agent to enter from the second blowing agent inlet 91 and 30% to enter from the blowing agent; or,

Wherein, in the step S502, the analysis result includes: factors affecting the foaming condition of the gypsum include: the flow rate of water, the flow rate of the foaming agent, the flow rate of the gypsum powder, the solution viscosity of the gypsum powder, and the flow rate of water , The flow of foaming agent and the flow of gypsum powder.

The step S503, determining new parameters and/or processing methods according to the analysis results, and producing new gypsum based on the new parameters and/or processing methods includes:

Control the flow rate of water between 1.8-2.6m/s;

The flow rate of the blowing agent is between 0.3-0.8m/s;

The flow velocity of gypsum powder is between 0.2-0.5m/s;

Control the solution viscosity of pure gypsum powder between 4000-5000cps;

The control water flow rate is 3.5-4.3t/h;

Control the flow rate of gypsum powder to 20-25t/h;

Control the flow rate of the blowing agent to 0.8-1.2t/h.

The flow rate of the control water is 2.26m/s;

The flow rate of the blowing agent is 0.57m/s;

The flow velocity of gypsum powder is 0.29m/s;

Control the solution viscosity of pure gypsum powder to 4400cps;

The control water flow rate is 4t/h;

Control the flow rate of gypsum powder to 22t/h;

Control the flow rate of the blowing agent to 1t/h.

After the above parameters are controlled, the internal pressure of the mixer can reach 0.25-0.4mpa. When the internal pressure of the mixer reaches 0.3mpa, it is most conducive to the foaming of the gypsum slurry.

Wherein, in the step S502, the analysis result includes: factors that affect the foaming condition of the gypsum include: a feeding method.

The feeding method of screw conveying will not have back pressure during the conveying process like "centrifugal pump convection foaming", which is conducive to foaming.

Wherein, after the step S503, the method further includes: repeating the steps S501-S503 until the new gypsum produced meets the foaming standard.

Wherein, the foaming standard means that more than 50% of the pores of the gypsum board cells are between 300-550 microns, and the strength of the gypsum board reaches the preset standard.

Among them, the preset standard of gypsum board strength means that the average and/or minimum value of the transverse and longitudinal breaking load of the gypsum board reaches the preset standard. Among them, different board thicknesses have different standards. For example, see Table 1 below.

The embodiment of the present disclosure also provides a gypsum slurry foaming processing device, including a processor and a computer-readable storage medium, the computer-readable storage medium stores instructions, and when the instructions are executed by the processor, Realize any of the above-mentioned gypsum slurry foaming treatment methods.

A foaming treatment method for gypsum slurry, the method comprising:

Obtain the flow field state of the gypsum slurry mixer during the mixing process;

Based on the flow field state, the agglomeration and foaming situation of the gypsum slurry is analyzed.

Optionally, obtaining the flow field state of the gypsum slurry mixer during the mixing process includes:

Obtaining the three-dimensional parameters of the mechanical structure of the gypsum slurry mixer;

Calculating the pressure cloud image information of the gypsum slurry mixture in the mixer based on the parameter information and working mode of the gypsum slurry mixture;

The three-dimensional parameters of the mechanical structure of the gypsum slurry mixer include: the position attributes of the various parts of the mixer, the combined properties of the water-throwing zone, the mixing zone, and the stirring components in the slurry zone in the gypsum slurry mixer.

Optionally, the position attributes of the various parts of the mixer include: the size and position of each part; the combined attributes of the stirring parts include: the number, position, thickness, height, and inlet of the stirring pins used, The position, size, and quantity of the water inlet, the blowing agent inlet, and the admixture inlet; the parameter information of the gypsum slurry mixture includes: the initial flow rate information of the water, the initial flow rate information of the blowing agent, the initial flow rate information of the gypsum powder, and The ratio information of water, foaming agent, and gypsum powder, initial pressure inside the mixer, concentration of foaming agent, and slurry viscosity information; the working mode includes feeding mode and motor speed.

Optionally, the analyzing the foaming condition of the gypsum slurry based on the flow field state includes:

The three-dimensional parameters of the mechanical structure of the gypsum slurry mixer are modeled to obtain a mixer model, and the mixer model is simulated according to the parameter information of the gypsum slurry mixture, the working mode and the mixer model. Pressure cloud chart information;

Determining the number of pressure peak areas of the gypsum slurry mixer and the pressure of each pressure peak area according to the pressure cloud map information;

Determine the pressure difference between the maximum pressure area and the minimum pressure area;

Based on the number of pressure peak areas and the pressure difference simulation result, the gypsum slurry foaming situation is analyzed.

Optionally, simulating the pressure cloud map information in the mixer according to the parameter information, working mode and the mixer model of the gypsum slurry mixture includes:

Acquiring a preset mixing processing file; the mixing processing file is used to provide corresponding pressure field data for the mixer model when the mixer model is being stirred;

Setting the position attribute of each part of the mixer in the mixer model and the combined attribute of the mixing part according to the mixing processing file, and setting the parameter information and working mode of the gypsum slurry mixture;

Updating the pressure field data in the mixer model according to the position attributes of the various components, the combined attributes of the mixing components, the parameter information and the working mode;

Mapping is performed according to the mixer model and the updated pressure field data to obtain pressure cloud map information in the mixer.

Optionally, the processing method further includes: adjusting the position attributes of the various components of the mixer in the mixer model and/or the combined attributes of the mixing components and/or the parameter information and/or working mode of the gypsum slurry mixture to change Pressure field data in the mixer model, and re-analyze the foaming situation.

Optionally, the processing method further includes:

According to the simulation result, determine the position attribute of each component in the mixer model, the combined attribute of the mixing component, the parameter information of the gypsum slurry mixture and the correspondence between the working mode and the foaming condition;

Determine the control parameters corresponding to the gypsum slurry currently to be produced according to the corresponding relationship;

The control parameter includes at least one of the following:

The three-dimensional parameters of the mechanical structure of the mixer, the mixing mode, and the parameter information of the gypsum slurry mixture.

Optionally, mapping based on the mixer model and the updated pressure field data to obtain pressure cloud map information in the mixer includes:

According to the preset multiphase flow mixing model, establish the position attributes of the various components, the combined attributes of the stirring components, and the mapping relationship between the parameter information and the working mode and the pressure cloud graph information in the mixer to form the inside of the mixer Pressure cloud graph information.

Optionally, analyzing the foaming situation of gypsum slurry based on the number of pressure peak areas and the pressure difference simulation result includes:

Determining the number of pressure peak areas of the gypsum slurry mixer and the pressure size of each pressure peak area through the simulation result of pressure cloud graph information in the mixer;

Determining the uniformity of foaming according to the number of pressure peak areas and the pressure difference between the pressure maximum area and the pressure minimum area;

When the number of pressure peak areas is greater than or equal to the preset first threshold or the pressure difference between the maximum pressure area and the minimum pressure area is greater than or equal to the preset second threshold, it is determined that the gypsum slurry is not foamed uniformly.

In another embodiment of the present disclosure, there is provided: a gypsum slurry foaming analysis device, including a processor and a computer-readable storage medium, the computer-readable storage medium stores instructions, wherein, when the When the instruction is executed by the processor, the gypsum slurry foaming processing method is realized

Example one

As shown in Figure 1-4, this embodiment illustrates the mixing process of the mixer:

Water is injected into the water jetting area from the water inlet 7 and/or auxiliary water inlet 71, and is jetted out in the tangential direction through the gap between the wall surface near the water jetting area and the turntable 2; gypsum is added from the inlet 8 and the foaming agent The foaming agent inlet 9, the second foaming agent inlet 91 and/or the third foaming agent inlet are put in and mixed in the mixing zone. During the working process of the mixer, the upper stirring pin is stationary, the lower stirring pin 3 rotates, and the lower stirring pin 3 Staggered through between the upper mixing pins, the two constitute a finger-crossing mixing structure; through the periodic position change, the material is repeatedly stirred and mixed inside by shear and diffusion; the main mixing method is shear mixing and convection The hybrid way. The slurry is mixed. Due to the speed gradient difference, the slurry in the gap between the turntable 2 and the casing 1 and the upper cover produces strong shear mixing. The turntable 2 rotates to bring the slurry to the slurry outlet 5.

Example two

In this embodiment, the working condition of the mixer is used to select the multiphase flow Mixture model in the fluid for simulation. First, on the basis of 3D modeling of the mixer structure, the finite element model (not limited to this) is used to determine the combined properties of the mixing components ( Input parameters such as stirring pin, position and size of the feed inlet, etc.), parameter information of the gypsum slurry mixture (such as flow rate, etc.) and working methods (such as speed, working mode, etc.) and corresponding indicators of the mixing effect (such as agglomeration) The relationship between the situation) is studied, a mathematical model is established through theoretical analysis and sampling data, and the model is sampled for verification. After determining the mixer simulation model, the model finds the input parameter combination that can achieve the best mixing effect.

In this embodiment, the flow rate of water is 2.26m/s, pulp is 2.88m/s, foaming agent is 0.57m/s, gypsum powder is 0.29m/s, production line speed is 60m/min, discharge port flow rate is 2.2m/s, and the rotor is removed After the inner cavity volume is 0.06m ³ , when the solution viscosity of pure gypsum powder is 4000-5000cps, when the foaming agent is injected 100% from the foaming agent inlet 9, the gypsum slurry is obtained and the paper-faced gypsum board is prepared The enlarged view of the core sampling sample is shown in Figure 6. According to the enlarged view, it can be seen that the cell distribution is not uniform.

In this embodiment, by further adjusting the parameters of the mechanical structure of the slurry mixer in the mixer model and/or the parameter information of the gypsum slurry mixture, and the working mode of the mixer, it is determined according to the pressure cloud diagram obtained by the simulation:

1. Changing the location of the foaming agent inlet to make it close to the slurry outlet can improve the uniformity of foaming;

2. Change the inlet size or quantity of the foaming agent, find the appropriate inlet size and quantity to make the pressure cloud image uniform, and improve the uniformity of foaming.

In the embodiments of the present disclosure, in addition to the blowing agent inlet 9, the blowing agent also enters from the other two inlets (the second blowing agent inlet 91 and the third blowing agent inlet) to prepare a gypsum board Magnified electron micrographs of core samples (Figure 7, Figure 8, Figure 9). Figures 7-9 show that there are cells of less than 100 microns, cells of 100-300 microns and cells of 300-550 microns at the sample site. As shown in Figure 10, the proportion of cells of 300-550 microns can reach 70% or more, and the amount of foaming agent is reduced from 9g/m ² to 7.0g/m ² , and the board density is reduced from 8.5kg/m ² to 7.5/m ² . In Figure 10, the abscissa represents the diameter of the gypsum board core hole; the ordinate represents the ratio of the number of holes of different diameters to the total number of holes. It can be seen that

A person of ordinary skill in the art can understand that all or some of the steps, functional modules/units in the system, and apparatus in the methods disclosed above can be implemented as software, firmware, hardware, and appropriate combinations thereof. In hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may consist of several physical components. The components are executed cooperatively. Some or all of the components may be implemented as software executed by a processor, such as a digital signal processor or a microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on a computer-readable medium, and the computer-readable medium may include a computer storage medium (or a non-transitory medium) and a communication medium (or a transitory medium). As is well known by those of ordinary skill in the art, the term computer storage medium includes volatile and nonvolatile implementations in any method or technology for storing information (such as computer readable instructions, data structures, program modules, or other data). Flexible, removable and non-removable media. Computer storage media include but are not limited to RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, magnetic disk storage or other magnetic storage devices, or Any other medium used to store desired information and that can be accessed by a computer. In addition, as is well known to those of ordinary skill in the art, communication media usually contain computer readable instructions, data structures, program modules, or other data in a modulated data signal such as carrier waves or other transmission mechanisms, and may include any information delivery media .

Claims

A foaming treatment method, including:

Step A: Obtain the mechanical structure parameters of the gypsum-producing mixer, the parameter information of the gypsum slurry mixture that produces the gypsum, and the working mode of the mixer;

Step B: Analyze the foaming condition of the gypsum based on the mechanical structure parameters, the parameter information of the gypsum slurry mixture, and the working mode to obtain an analysis result;

Step C: Determine new parameters and/or treatment methods according to the analysis results, and produce new gypsum based on the new parameters and/or treatment methods.
The foaming treatment method according to claim 1, wherein:

The mechanical structure parameters of the mixer include: parameters of various parts of the mixer except for the stirring pin and stirring parameters;

Wherein, the parameters of each part of the mixer except the stirring pin at least include: the size and position of each part of the mixer except the stirring pin;

The stirring parameters include any one or more of the following information: the number, position, thickness and height of the stirring pins used, and the position, size and quantity of the feed inlet, water inlet and foaming agent inlet;

The parameter information of the gypsum slurry mixture includes any one or more of the following information: flow rate of water, flow rate of foaming agent, flow rate of gypsum powder, flow rate of water, flow rate of foaming agent, flow rate of gypsum powder , Solution viscosity of gypsum powder;

The working mode of the mixer includes the feeding mode of the mixer and the rotation speed of the motor.
The foaming treatment method according to claim 2, wherein the analysis result includes: the factors affecting the foaming condition of the gypsum include: the inlet of the foaming agent, the proportion of the foaming agent entering from different inlets, and the The time when the foaming agent enters from different inlets.
The foaming treatment method according to claim 3, wherein:

The step of determining new parameters and/or treatment methods according to the analysis results, and producing new gypsum based on the new parameters and/or treatment methods includes:

When producing new gypsum, control 70% of the blowing agent to enter from the second blowing agent inlet and 30% to enter from the blowing agent; or,

Control 50% of the blowing agent to enter from the blowing agent inlet, 20% from the second blowing agent inlet, and 30% from the third blowing agent inlet; or,

Control 50% of the blowing agent to enter from the blowing agent inlet, 20% from the second blowing agent inlet, and 30% from the third blowing agent inlet, and control the blowing agent to enter the blowing agent. The time period for the entry of the blowing agent inlet is 0 to a second, 0+n to a+n second, 0+2n to a+2n,...; the time period for controlling the blowing agent to enter the second blowing agent inlet It is b to c seconds, b+n to c+n seconds, b+2n to c+2n,...; the time period for controlling the blowing agent to enter the second blowing agent inlet is d to e seconds, d+ n to e+n seconds, d+2n to e+2n,..., and so on, until the blowing agent is used up in proportion in the three ports; where the values of a, b, c, d, e and f In each round, the time point when the blowing agent ends at the second blowing agent inlet or the third blowing agent inlet is earlier than in the next round, and the blowing agent enters from the blowing agent inlet Point of entry.
The foaming treatment method according to claim 2, wherein the analysis result includes: the factors affecting the foaming condition of the gypsum include: the flow rate of water, the flow rate of the foaming agent, the flow rate of the gypsum powder, the Solution viscosity, water flow, foaming agent flow, and gypsum powder flow.
The foaming treatment method according to claim 5, wherein:

The step of determining new parameters and/or treatment methods according to the analysis results, and producing new gypsum based on the new parameters and/or treatment methods includes:

Control the flow rate of water between 1.8-2.6m/s;

The flow rate of the blowing agent is between 0.3-0.8m/s;

The flow velocity of gypsum powder is between 0.2-0.5m/s;

Control the solution viscosity of pure gypsum powder between 4000-5000cps;

The control water flow rate is 3.5-4.3t/h;

Control the flow rate of gypsum powder to 20-25t/h;

Control the flow rate of the blowing agent to 0.8-1.2t/h.
The foaming treatment method according to claim 6, wherein the step of determining new parameters and/or treatment methods according to the analysis results, and producing new gypsum based on the new parameters and/or treatment methods comprises:

The flow rate of the control water is 2.26m/s;

The flow rate of the blowing agent is 0.57m/s;

The flow velocity of gypsum powder is 0.29m/s;

Control the solution viscosity of pure gypsum powder to 4400cps;

The control water flow rate is 4t/h;

Control the flow rate of gypsum powder to 22t/h;

Control the flow rate of the blowing agent to 1t/h.
3. The foaming treatment method according to claim 2, wherein the analysis result includes: factors that affect the foaming condition of the gypsum include: feeding method.
The foaming treatment method according to claim 8, wherein the step of determining new parameters and/or treatment methods according to the analysis results, and producing new gypsum based on the new parameters and/or treatment methods comprises: producing For new gypsum, the feeding method of screw conveying is used to control the foaming agent.
The foaming treatment method according to any one of claims 1-9, wherein:

After the step C, the method further includes: repeating the steps A-C until the new gypsum produced meets the preset foaming standard.
10. The foaming treatment method of claim 10, wherein the foaming standard means that 50% or more of the pores of the gypsum board cells are between 300 and 550 microns, and the strength of the gypsum board reaches a preset standard.
The foaming treatment method according to claim 11, wherein the preset standard of gypsum board strength means that the average and/or minimum value of the transverse and longitudinal breaking load of the gypsum board reaches the preset standard, and different board thicknesses have different Preset standards.
A foaming processing device, comprising a processor and a computer-readable storage medium, wherein instructions are stored in the computer-readable storage medium, and when the instructions are executed by the processor, any of claims 1-12 One of the foaming treatment methods.