CN108975856B - Method for manufacturing nano modified mildew-proof phosphogypsum partition board - Google Patents
Method for manufacturing nano modified mildew-proof phosphogypsum partition board Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
- C04B28/142—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements
- C04B28/143—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being phosphogypsum
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- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
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- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
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Abstract
The invention relates to the technical field of gypsum board processing. Aims to provide a method for manufacturing a nano modified mildew-proof phosphogypsum partition board. The technical scheme adopted by the invention is as follows: a method for manufacturing a nano modified mildew-proof phosphogypsum partition board comprises the following steps: A. preparing a dispersion slurry with the content of 20nmAg, 30nmCuO and 40nmZnO of 10.0 percent: adopting a high-speed dispersion machine, and under the stirring condition that the rotating speed of the high-speed dispersion machine is 600 revolutions per minute, sequentially adding the following materials in parts by weight: 898 parts of softened water, 0.3 part of wetting agent, 0.6 part of dispersing agent, 0.6 part of guar gum, 0.3 part of defoaming agent, 0.2 part of water-retaining agent, 20nmAg20 parts, 30nmCuO50 parts and 40nmZnO30 parts; B. preparing the composite nanometer mildew-proof phosphogypsum light partition board. The invention has excellent environmental protection value, excellent mildew resistance and obvious economic benefit.
Description
Technical Field
The invention relates to the technical field of gypsum board processing, in particular to a method for manufacturing a nano modified mildew-proof phosphogypsum partition board.
Background
The phosphogypsum is solid waste residue generated when phosphorite is treated by sulfuric acid in the production of phosphoric acid, and 4.5-5.0t of phosphogypsum can be generated every 1t of phosphoric acid is produced. The main component of the phosphogypsum is dihydrate gypsum (CaSO)4·2H2O) and hemihydrate gypsum (CaSO)4·1/2H2O), mostly dihydrate gypsum. The color is mostly dark gray. Besides the main component calcium sulfate, the phosphogypsum also contains a small amount of inorganic and organic impurities such as phosphoric acid, silicon, magnesium, iron, aluminum and the like. By the end of 2015, more than 4 hundred million tons of phosphogypsum are accumulated in China. As is well known, the phosphogypsum is a three-waste material, and in recent years, with the rapid development of phosphorus chemical industry, the annual emission of the phosphogypsum exceeds 2000 ten thousand t, and the utilization rate is only 2-3%. At present, the ardealite in China is used for producing building materials (such as bricks, plates and the like, the application range of the ardealite is quite narrow due to the defect of physicochemical property of the ardealite in the building materials), and the residual large amount of solid waste residue still occupies a large area of land and is accumulated like a mountain. Due to the phosphorus stoneThe harmful chemical substances contained in the paste can affect the environment for hundreds of years, and have great influence on the environment around a storage yard: phosphogypsum is slightly soluble in water and can cause extensive groundwater pollution. Phosphorus enters a water body, the eutrophication is more serious than nitrogen, and the environmental protection pressure is huge. The location of the inventor is a severe ardealite pollution area.
The phosphogypsum light partition board is produced by taking phosphogypsum as a main material, the weight of a single board is more than 100kg, and the area of the single board is 1.5m2The above products are generally piled in drying sheds or in the open. In summer and autumn, particularly in 6-9 months of high-temperature and humid conditions, the ardealite board mildews, and the mildewing probability almost reaches 100%. Not only affects the appearance but also can cause the strength reduction of the gypsum board when the appearance is serious. Apart from the climate, the main cause of mildew is residual phosphoric acid or phosphate in phosphogypsum, which is one of the energy substances of microorganisms and plays the role of a culture medium.
In order to solve the problems, the conventional technical means in the prior art generally directly adds a chemical mildew inhibitor in the production process, but the mode also has the following defects:
1. the cost of the chemical mildew inhibitor is high, more than 4kg of the chemical mildew inhibitor is added into each 1t of phosphogypsum, the unit price of the chemical mildew inhibitor per kilogram is generally 50-80 yuan, the cost per ton is as high as 250-400 yuan, and the cost of the chemical mildew inhibitor added into each square meter of gypsum board is more than 12 yuan.
2. The chemical mildew preventive is directly added into a gypsum system, and the chemical mildew preventive is degraded. The phosphogypsum generates a high temperature of 50-65 ℃ for 1 hour in the hydration and molding process, the pH value of the phosphogypsum is 3-5, and under the conditions of the temperature, the time and the pH value, the chemical structure of most of the chemically synthesized mildewproof agent is decomposed, so that the bactericidal function of the chemically synthesized mildewproof agent is lost or greatly reduced.
3. In order to overcome the problems of points 1 and 2, some workers have proposed a method of applying a chemical mold preventive, which reduces the cost of mold prevention to some extent, but is inconvenient to construct. Because the phosphogypsum light partition wall board is of a hollow structure, 5-7 holes with the diameter of about 60mm are formed in the board, the phosphogypsum light partition wall board penetrates through the whole board body, and the holes can hardly be brushed manually. In addition, the self weight of the partition board is large, the partition board is difficult to turn during painting, the construction efficiency is extremely low, and large-scale operation can hardly be realized.
Disclosure of Invention
The invention aims to provide a method for manufacturing a nano modified mildew-proof phosphogypsum partition board, which overcomes the defects.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows: a method for manufacturing a nano modified mildew-proof phosphogypsum partition board comprises the following steps:
A. preparing a dispersion slurry with the content of 20nmAg, 30nmCuO and 40nmZnO of 10.0 percent:
adopting a high-speed dispersion machine, and under the stirring condition that the rotating speed of the high-speed dispersion machine is 600 revolutions per minute, sequentially adding the following materials in parts by weight: 898 parts of softened water, 0.3 part of wetting agent, 0.6 part of dispersing agent, 0.6 part of guar gum, 0.3 part of defoaming agent, 0.2 part of water-retaining agent, 20nmAg20 parts, 30nmCuO50 parts and 40nmZnO30 parts; after all the materials are added, continuously stirring for 2 minutes at the rotating speed of 600 revolutions per minute; then rapidly increasing the rotating speed of the high-speed dispersion machine to 12000 r/min within 10 seconds, and continuously stirring for 15 minutes; standing for 1 hour to obtain dispersed slurry with the content of 20nmAg, 30nmCuO and 40nmZnO of 10.0 percent;
B. preparing a composite nano mildew-proof phosphogypsum light partition board:
adopting a large stirrer, and sequentially adding the following materials in parts by weight under the stirring state that the rotating speed of the large stirrer is 20-80 revolutions per minute:
after the raw materials are added, continuously stirring for 5 minutes, and then molding by casting to obtain the product.
Preferably, in the step B, the following materials are added in sequence according to the parts by weight under the stirring state that the rotating speed of a large stirrer is 40-60 revolutions per minute:
preferably, the large stirrer comprises a supporting leg and a stirring barrel arranged on the supporting leg; a feed inlet and a water inlet are arranged on two sides of the top of the stirring barrel, and a discharge outlet is arranged at the bottom of the stirring barrel; a vertical stirring shaft is arranged at the center in the stirring barrel, and the upper end of the stirring shaft is in transmission connection with a speed reducing motor fixedly arranged at the top of the stirring barrel; the bottom end of the stirring shaft extends to the lower part of the stirring barrel, and is fixedly provided with a first stirring assembly, wherein the first stirring assembly is composed of two criss-cross stirring rods in an inverted U shape;
two groups of second stirring assemblies are symmetrically arranged on the stirring shaft above the first stirring assembly, each second stirring assembly comprises two stirring rods which are arranged up and down, one end of each stirring rod is hinged with a hinge seat fixedly arranged on the stirring shaft, and the other end of each stirring rod is fixedly provided with a stirring plate; the positions of the stirring rods, which are close to the hinged seat, are connected with the stirring shaft through return springs, and when the return springs are in a natural state, the two stirring rods of the second stirring assembly form an included angle of 75-80 degrees; the second stirring assembly further comprises a water-meeting plate which is arranged between the two stirring rods and is in a regular triangle shape, two corner parts of the three corner parts of the water-meeting plate are connected with the corresponding stirring rods through pull ropes, and one corner part is connected with the other through a balance rope; the stirring shaft is provided with a transverse rope hole, the position of the rope hole is opposite to that of the balance rope, and the balance rope is arranged in the rope hole in a penetrating mode.
Preferably, the middle part of the stirring shaft is provided with a mounting hole, a rotating block is embedded in the mounting hole, and the rotating block and the stirring shaft form rotating fit; the rope hole is located the turning block, the both ends in rope hole are the loudspeaker form that diminishes gradually from outer to interior.
Preferably, the center of the water-facing plate is provided with a groove which is recessed from the water-facing surface to the other surface.
Preferably, the bottom surface of agitator becomes low gradually to the centre from all around, and the discharge gate is located the minimum.
Preferably, the stirring plate is rhombic, and a water-drop-shaped turbulent flow hole is formed in the center of the stirring plate.
Preferably, a shaft support assembly is further arranged on the stirring shaft above the second stirring assembly, the shaft support assembly comprises a plurality of support rods uniformly arranged around the stirring shaft, the support rods extend in the radial direction of the stirring shaft, one end of each support rod is fixedly connected with the stirring shaft, and the other end of each support rod is provided with a roller; the inner wall of the stirring barrel is circumferentially provided with a circle of guide groove matched with the roller, the guide groove is opposite to the roller, and the roller extends into the guide groove and contacts with the groove bottom of the guide groove.
The beneficial effects of the invention are concentrated and expressed as follows:
1. the main raw material adopts the three-waste material phosphogypsum, so that waste is changed into valuable, the efficient utilization of the phosphogypsum is realized, the environmental problems of phosphogypsum storage yard and pollution are solved, and the method has excellent environmental protection value.
2. The phosphogypsum is modified by the nano silver, the nano copper oxide and the nano zinc oxide in proper proportion, so that the phosphogypsum has excellent antibacterial and mildewproof performance. The dispersion slurry is prepared first, and then the dispersion slurry is added, so that the nano silver, the nano copper oxide and the nano zinc oxide are distributed more uniformly in the phosphogypsum system, and the utilization rate of the nano material is improved.
3. Although the materials such as nano silver, nano copper oxide and nano zinc oxide with relatively expensive unit price are adopted, the addition amount of the materials is extremely low on the premise of the same mildew-proof performance, so that the total cost of the product is extremely low, and the economic benefit is remarkable. The cost of the partition board is about 16.3 yuan/square meter by calculating the area of the surface of the partition board and adding the composite nano material; the cost of the partition board is about 24.3 yuan/square meter by adding a chemical preservative; without any mildew proofing treatment, the cost of the partition board is about 12.3 yuan per square meter.
4. Through the reasonable proportion of the nano silver, the nano copper oxide and the nano zinc oxide, the mildew resistance of the composite material is obviously improved compared with that of the composite material which is independently added with the nano silver, the nano copper oxide and the nano zinc oxide.
5. The nano silver, the nano copper oxide and the nano zinc oxide are used as mildew preventive and added into an ardealite system, but the physical properties of the ardealite partition board are greatly improved, and the mildew preventive has an unexpected effect.
Drawings
FIG. 1 is a schematic view of the internal structure of a large mixer;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a schematic view of the installation of the turning block;
FIG. 4 is a schematic structural view of a water-receiving plate;
fig. 5 is an enlarged view of a portion B in fig. 1.
Detailed Description
In order to more clearly describe the technical contents of the present invention, the present invention will be further illustrated with reference to the following examples.
Example one
A method for manufacturing a nano modified mildew-proof phosphogypsum partition board comprises the following steps:
A. preparing a dispersion slurry with the content of 20nmAg, 30nmCuO and 40nmZnO of 10.0 percent:
adopting a high-speed dispersion machine, and under the stirring condition that the rotating speed of the high-speed dispersion machine is 600 revolutions per minute, sequentially adding the following materials in parts by weight: 898 parts of softened water, 0.3 part of wetting agent, 0.6 part of dispersing agent, 0.6 part of guar gum, 0.3 part of defoaming agent, 0.2 part of water-retaining agent, 20nmAg20 parts, 30nmCuO50 parts and 40nmZnO30 parts; after all the materials are added, continuously stirring for 2 minutes at the rotating speed of 600 revolutions per minute; then rapidly increasing the rotating speed of the high-speed dispersion machine to 12000 r/min within 10 seconds, and continuously stirring for 15 minutes; standing for 1 hour to obtain dispersed slurry with the content of 20nmAg, 30nmCuO and 40nmZnO of 10.0 percent;
B. preparing a composite nano mildew-proof phosphogypsum light partition board:
adopting a large stirrer, and sequentially adding the following materials in parts by weight under the stirring state that the rotating speed of the large stirrer is 20-40 revolutions per minute:
after the raw materials are added, continuously stirring for 5 minutes, and then molding by casting to obtain the product.
Example two
A method for manufacturing a nano modified mildew-proof phosphogypsum partition board comprises the following steps:
A. preparing a dispersion slurry with the content of 20nmAg, 30nmCuO and 40nmZnO of 10.0 percent:
adopting a high-speed dispersion machine, and under the stirring condition that the rotating speed of the high-speed dispersion machine is 600 revolutions per minute, sequentially adding the following materials in parts by weight: 898 parts of softened water, 0.3 part of wetting agent, 0.6 part of dispersing agent, 0.6 part of guar gum, 0.3 part of defoaming agent, 0.2 part of water-retaining agent, 20nmAg20 parts, 30nmCuO50 parts and 40nmZnO30 parts; after all the materials are added, continuously stirring for 2 minutes at the rotating speed of 600 revolutions per minute; then rapidly increasing the rotating speed of the high-speed dispersion machine to 12000 r/min within 10 seconds, and continuously stirring for 15 minutes; standing for 1 hour to obtain dispersed slurry with the content of 20nmAg, 30nmCuO and 40nmZnO of 10.0 percent;
B. preparing a composite nano mildew-proof phosphogypsum light partition board:
adopting a large stirrer, and sequentially adding the following materials in parts by weight when the rotating speed of the large stirrer is 60-80 revolutions per minute under a stirring state:
after the raw materials are added, continuously stirring for 5 minutes, and then molding by casting to obtain the product.
EXAMPLE III
A method for manufacturing a nano modified mildew-proof phosphogypsum partition board comprises the following steps:
A. preparing a dispersion slurry with the content of 20nmAg, 30nmCuO and 40nmZnO of 10.0 percent:
adopting a high-speed dispersion machine, and under the stirring condition that the rotating speed of the high-speed dispersion machine is 600 revolutions per minute, sequentially adding the following materials in parts by weight: 898 parts of softened water, 0.3 part of wetting agent, 0.6 part of dispersing agent, 0.6 part of guar gum, 0.3 part of defoaming agent, 0.2 part of water-retaining agent, 20nmAg20 parts, 30nmCuO50 parts and 40nmZnO30 parts; after all the materials are added, continuously stirring for 2 minutes at the rotating speed of 600 revolutions per minute; then rapidly increasing the rotating speed of the high-speed dispersion machine to 12000 r/min within 10 seconds, and continuously stirring for 15 minutes; standing for 1 hour to obtain dispersed slurry with the content of 20nmAg, 30nmCuO and 40nmZnO of 10.0 percent;
B. preparing a composite nano mildew-proof phosphogypsum light partition board:
adopting a large stirrer, and sequentially adding the following materials in parts by weight when the rotating speed of the large stirrer is 40-60 revolutions per minute under a stirring state:
after the raw materials are added, continuously stirring for 5 minutes, and then molding by casting to obtain the product.
Example four
A method for manufacturing a nano modified mildew-proof phosphogypsum partition board comprises the following steps:
A. preparation of a dispersion slurry with a 20nmAg content of 10.0%:
adopting a high-speed dispersion machine, and under the stirring condition that the rotating speed of the high-speed dispersion machine is 600 revolutions per minute, sequentially adding the following materials in parts by weight: 898 parts of softened water, 0.3 part of wetting agent, 0.6 part of dispersing agent, 0.6 part of guar gum, 0.3 part of defoaming agent, 0.2 part of water-retaining agent and 100 parts of 20 nmAg; after all the materials are added, continuously stirring for 2 minutes at the rotating speed of 600 revolutions per minute; then rapidly increasing the rotating speed of the high-speed dispersion machine to 12000 r/min within 10 seconds, and continuously stirring for 15 minutes; standing for 1 hour to obtain dispersed slurry with 20nmAg content of 10.0%;
B. preparing a composite nano mildew-proof phosphogypsum light partition board:
adopting a large stirrer, and sequentially adding the following materials in parts by weight when the rotating speed of the large stirrer is 40-60 revolutions per minute under a stirring state:
after the raw materials are added, continuously stirring for 5 minutes, and then molding by casting to obtain the product.
EXAMPLE five
A method for manufacturing a nano modified mildew-proof phosphogypsum partition board comprises the following steps:
A. preparation of a dispersion slurry with a 30nmCuO content of 10.0%:
adopting a high-speed dispersion machine, and under the stirring condition that the rotating speed of the high-speed dispersion machine is 600 revolutions per minute, sequentially adding the following materials in parts by weight: 898 parts of softened water, 0.3 part of wetting agent, 0.6 part of dispersing agent, 0.6 part of guar gum, 0.3 part of defoaming agent, 0.2 part of water-retaining agent and 100 parts of 30 nmCuO; after all the materials are added, continuously stirring for 2 minutes at the rotating speed of 600 revolutions per minute; then rapidly increasing the rotating speed of the high-speed dispersion machine to 12000 r/min within 10 seconds, and continuously stirring for 15 minutes; standing for 1 hour to obtain dispersed slurry with the content of 30nmCuO of 10.0 percent;
B. preparing a composite nano mildew-proof phosphogypsum light partition board:
adopting a large stirrer, and sequentially adding the following materials in parts by weight when the rotating speed of the large stirrer is 40-60 revolutions per minute under a stirring state:
after the raw materials are added, continuously stirring for 5 minutes, and then molding by casting to obtain the product.
EXAMPLE six
A method for manufacturing a nano modified mildew-proof phosphogypsum partition board comprises the following steps:
A. preparation of a dispersion slurry with a 40nmZnO content of 10.0%:
adopting a high-speed dispersion machine, and under the stirring condition that the rotating speed of the high-speed dispersion machine is 600 revolutions per minute, sequentially adding the following materials in parts by weight: 898 parts of softened water, 0.3 part of wetting agent, 0.6 part of dispersing agent, 0.6 part of guar gum, 0.3 part of defoaming agent, 0.2 part of water-retaining agent and 100 parts of 40 nmZnO; after all the materials are added, continuously stirring for 2 minutes at the rotating speed of 600 revolutions per minute; then rapidly increasing the rotating speed of the high-speed dispersion machine to 12000 r/min within 10 seconds, and continuously stirring for 15 minutes; standing for 1 hour to obtain dispersed slurry with 40nmZnO content of 10.0%;
B. preparing a composite nano mildew-proof phosphogypsum light partition board:
adopting a large stirrer, and sequentially adding the following materials in parts by weight when the rotating speed of the large stirrer is 40-60 revolutions per minute under a stirring state:
after the raw materials are added, continuously stirring for 5 minutes, and then molding by casting to obtain the product.
And (3) carrying out mildew-proof performance detection on the nano modified mildew-proof phosphogypsum partition boards prepared in the first to sixth examples, the gypsum boards added with the conventional chemical mildew-proof agents (pentachlorophenol mildew-proof agents) and the conventional gypsum boards without mildew-proof modification. Specifically, the products are stacked in an airing shed with the air temperature of 28-35 ℃ and the air humidity of 75-80%, the number of bacterial colonies is detected after 15 days, and the detection result is based on the average number of the bacterial colonies per square meter. The results of measuring the average number of colonies per square meter are shown in the following table:
the physical performance test of the nano modified mildew-proof phosphogypsum partition board prepared in the first to sixth examples is carried out according to the light partition board for buildings GB/T23451-2009, and the results are shown in the following table:
according to the table, the nano modified mildew-proof phosphogypsum partition board has excellent mechanical properties, which is far from the industrial standard and is unexpected effect of the inventor in the initial stage, and is not expected by the inventor. The invention is not only suitable for the phosphogypsum light partition board, but also suitable for building blocks, bricks, plastering gypsum, gypsum putty, bonding gypsum, decorative gypsum boards and the like which take the phosphogypsum as a main cementing material
In the processing process of the nanometer modified mildew-proof phosphogypsum partition board, the uniformity of the composite nanometer material, namely the dispersion slurry, has great influence on the mildew-proof performance, the mechanical performance and the like of the whole nanometer modified mildew-proof phosphogypsum partition board. In order to improve the uniformity of stirring, the inventor specially designs a large stirrer.
Referring to fig. 1-5, the large-scale mixer comprises a supporting leg 1 and a mixing drum 2 arranged on the supporting leg 1, wherein the capacity of the mixing drum 2 is more than 2 cubic meters, and the large-scale mixer can process materials more than 2 cubic meters each time. As shown in figure 1, a feed inlet 3 and a water inlet 4 are arranged on two sides of the top of the stirring barrel 2, and a discharge outlet 5 is arranged at the bottom. In order to facilitate the smooth discharge of the materials, it is preferable that the bottom surface of the stirring barrel 2 gradually becomes lower from the periphery to the middle, and the discharge port 5 is located at the lowest position. And a discharge valve is arranged at the discharge port 5, and the stirred material can be discharged by opening the discharge valve to perform subsequent casting molding.
According to the large stirrer, the vertical stirring shaft 7 is arranged in the center of the stirring barrel 2, and the upper end of the stirring shaft 7 is in transmission connection with the speed reducing motor 6 fixedly arranged at the top of the stirring barrel 2. The bottom end of the stirring shaft 7 extends to the lower part of the stirring barrel 2, and is fixedly provided with a first stirring assembly which is composed of two crossed stirring rods 8 in an inverted U shape.
Referring to fig. 1 and 2, two groups of second stirring assemblies are symmetrically arranged on the stirring shaft 7 above the first stirring assembly. The second stirring subassembly is including two stirring rod 9 of arranging from top to bottom, the one end of stirring rod 9 constitutes articulatedly with the fixed articulated seat 10 that sets up on (mixing) shaft 7, and the other end is fixed to be provided with a stirring board 11, in order to further carry the stirring effect of stirring board 11, stirring board 11 can also be the rhombus, and stirs the central turbulent hole 19 of seting up and be the water droplet form of board 11. According to the large stirrer, the stirring rods 9 can swing up and down around the hinged seat 10, and the stirring rods 9 on each group of second stirring assemblies can be folded or separated, so that the rotating paths of the stirring rods 9 can be changed in the rotating process of the stirring shaft 7, the materials are stirred more disorderly, and the stirring uniformity is improved. The manner in which the paddle 9 is driven is described below.
The stirring rod 9 is connected to the stirring shaft 7 through a return spring 12 at a position close to the hinged seat 10, as shown in fig. 2, that is, the stirring rod 9 located above is connected to the stirring shaft 7 above through the return spring 12, and the stirring rod 9 located below is connected to the stirring shaft 7 below through the return spring 12. The two stirring shafts 7 form a V-shaped structure, and when the return spring 12 is in a natural state, the two stirring rods 9 of the second stirring assembly form an included angle of 75-80 degrees.
In order to drive the stirring rods 9 to swing, the second stirring assembly further comprises a water-meeting plate 13 which is arranged between the two stirring rods 9 and is in a regular triangle shape, the water-meeting plate 13 is vertically arranged and is in contact with the material mixed liquid in the rotating process to generate a reaction force, and the reaction force is the largest when the plate surface of the reaction force is coincident with the radial direction of the rotating shaft 7, namely in the state shown in fig. 2. When the plate surface is close to the tangential direction of the stirring barrel 2, the reaction force is minimum, so that the stirring barrel is easy to be used. The two groups of stirring rods 9 can be dragged to close or separate by utilizing the difference of the reaction force applied to the two water-meeting plates 13. In order to improve the stress degree of the water-meeting plate 13, the center of the water-meeting plate 13 is provided with a groove 18 which is concave from the water-meeting surface to the other surface, and the groove 18 is better than a bag, so that the materials can be prevented from rapidly flowing away along the plate surface in the process of contacting the water-meeting plate 13, and the reaction force applied to the materials can be increased.
The concrete structure is shown in fig. 2, two corners of the three corners of the water-meeting plate 13 are connected with the corresponding stirring rods 9 through pull ropes 14, and one corner is connected with each other through balance ropes 15. In fig. 2, the upper corner of the left water-receiving plate 13 is connected to the upper left agitator roller 9 by a pull cord 14, the lower corner of the left water-receiving plate 13 is connected to the lower left agitator roller 9 by a pull cord 14, the upper corner of the right water-receiving plate 13 is connected to the upper right agitator roller 9 by a pull cord 14, and the lower corner of the right water-receiving plate 13 is connected to the lower right agitator roller 9 by a pull cord 14. The stirring shaft 7 is provided with a transverse rope hole 16, the position of the rope hole 16 is opposite to the balance rope 15, the balance rope 15 is arranged in the rope hole 16 in a penetrating mode, and linkage of the left water-facing plate 13 and the right water-facing plate 13 is achieved through the balance rope 15. Thereby, the left stirring rod 9 and the right stirring rod 9 are always in a one-to-one state. For example: when the left water-facing plate 13 is subjected to a large reaction force, the balance rope 15 is dragged to move towards the left side, the balance rope 15 drives the right water-facing plate 13 to move towards the left side, and the right water-facing plate 13 drives the two stirring rods 9 on the right side to fold through the pull rope 14. When the stirring rod 9 is folded, the water-facing plate 13 on the right side is in a state of being subjected to a larger reaction force, the balance rope 15 and the water-facing plate 13 on the left side are dragged to move to the right, so that the stirring rod 9 on the left side is driven to be folded, and meanwhile, the stirring rod 9 on the right side is opened under the action of the return spring 12. So, continuous circulation to continuous change puddler 9 is whole in agitator 2's rotation route, improve the degree of consistency of stirring.
As shown in fig. 3, since the balance rope 15 needs to pass through the rope hole 16 in a reciprocating manner, in order to avoid excessive wear thereof, it is better that a mounting hole is formed in the middle of the stirring shaft 7, a rotating block 17 is embedded in the mounting hole, and the rotating block 17 and the stirring shaft 7 form a rotating fit. To facilitate the mounting of the turning block 17, the turning block 17 is generally made up of two sections, for example: in fig. 3, the rotating block 17 includes a middle section and two end heads, in which case the mounting hole cannot be passed through, and for this purpose, the rotating block 17 may be divided into two sections, one section including the middle section and one of the heads, and the other section being the other head. This is a simple way and will not be described further here. The rope hole 16 is located on the rotating block 17, and two ends of the rope hole 16 are in a horn shape gradually reduced from outside to inside. In this way, the friction force of the balance rope 15 during passing through the rotating block 17 can be buffered by the rotation of the rotating block 17, so that the service life of the balance rope 15 is prolonged. At the same time, the trumpet-shaped design can reduce the wear of the balancing rope 15 as much as possible.
Because large-scale agitator highly higher, (mixing) shaft 7 length is longer, and the puddler 9 of second stirring subassembly is in the state that alternately opens and shuts, in order to ensure the stability of (mixing) shaft 7, still be provided with the axle support subassembly on the (mixing) shaft 7 of second stirring subassembly top, the axle support subassembly includes many branch 20 around the even setting of (mixing) shaft 7, branch 20 is along the radial extension of (mixing) shaft 7, and one end and (mixing) shaft 7 rigid coupling, and the other end sets up gyro wheel 21. A circle of guide groove 22 matched with the roller 21 is arranged on the inner wall of the stirring barrel 2 along the circumferential direction, the position of the guide groove 22 is opposite to the roller 21, and the roller 21 extends into the guide groove 22 and contacts with the groove bottom of the guide groove 22.
Claims (7)
1. A manufacturing method of a nanometer modified mildew-proof phosphogypsum partition board is characterized by comprising the following steps:
A. preparing a dispersion slurry with the content of 20nmAg, 30nmCuO and 40nmZnO of 10.0 percent:
adopting a high-speed dispersion machine, and under the stirring condition that the rotating speed of the high-speed dispersion machine is 600 revolutions per minute, sequentially adding the following materials in parts by weight: 898 parts of softened water, 0.3 part of wetting agent, 0.6 part of dispersing agent, 0.6 part of guar gum, 0.3 part of defoaming agent, 0.2 part of water-retaining agent, 20nmAg20 parts, 30nmCuO50 parts and 40nmZnO30 parts; after all the materials are added, continuously stirring for 2 minutes at the rotating speed of 600 revolutions per minute; then rapidly increasing the rotating speed of the high-speed dispersion machine to 12000 r/min within 10 seconds, and continuously stirring for 15 minutes; standing for 1 hour to obtain dispersed slurry with the content of 20nmAg, 30nmCuO and 40nmZnO of 10.0 percent;
B. preparing a composite nano mildew-proof phosphogypsum light partition board:
adopting a large stirrer, and sequentially adding the following materials in parts by weight under the stirring state that the rotating speed of the large stirrer is 20-80 revolutions per minute:
after the raw materials are added, continuously stirring for 5 minutes, and then molding by casting to obtain a product;
the large stirrer comprises a supporting leg (1) and a stirring barrel (2) arranged on the supporting leg (1); a feed inlet (3) and a water inlet (4) are formed in the two sides of the top of the stirring barrel (2), and a discharge outlet (5) is formed in the bottom of the stirring barrel; a vertical stirring shaft (7) is arranged at the center in the stirring barrel (2), and the upper end of the stirring shaft (7) is in transmission connection with a speed reducing motor (6) fixedly arranged at the top of the stirring barrel (2); the bottom end of the stirring shaft (7) extends to the lower part of the stirring barrel (2), and is fixedly provided with a first stirring assembly, wherein the first stirring assembly is composed of two criss-cross stirring rods (8) in an inverted U shape;
two groups of second stirring assemblies are symmetrically arranged on the stirring shaft (7) above the first stirring assembly, each second stirring assembly comprises two stirring rods (9) which are arranged up and down, one end of each stirring rod (9) is hinged with a hinge seat (10) fixedly arranged on the stirring shaft (7), and the other end of each stirring rod is fixedly provided with a stirring plate (11); the positions, close to the hinged seat (10), of the stirring rods (9) are connected with the stirring shaft (7) through return springs (12), and when the return springs (12) are in a natural state, the two stirring rods (9) of the second stirring assembly form an included angle of 75-80 degrees; the second stirring assembly further comprises a water-meeting plate (13) which is arranged between the two stirring rods (9) and is in a regular triangle shape, two corner parts of the three corner parts of the water-meeting plate (13) are connected with the corresponding stirring rods (9) through pull ropes (14), and one corner part is connected with each other through a balance rope (15); the stirring shaft (7) is provided with a transverse rope hole (16), the position of the rope hole (16) is opposite to the balance rope (15), and the balance rope (15) is arranged in the rope hole (16) in a penetrating mode.
2. The manufacturing method of the nano modified mildew-proof phosphogypsum partition board according to claim 1, is characterized in that: in the step B, under the stirring state that the rotating speed of the large stirrer is 40-60 revolutions per minute, the following materials are added in sequence according to the parts by weight:
3. the manufacturing method of the nano modified mildew-proof phosphogypsum partition board according to claim 2, is characterized in that: a mounting hole is formed in the middle of the stirring shaft (7), a rotating block (17) is embedded in the mounting hole, and the rotating block (17) is in rotating fit with the stirring shaft (7); the rope hole (16) is positioned on the rotating block (17), and two ends of the rope hole (16) are in a horn shape which is gradually reduced from outside to inside.
4. The manufacturing method of the nano modified mildew-proof phosphogypsum partition board according to claim 3, which is characterized in that: and a groove (18) which is sunken from the water-facing surface to the other surface is formed in the center of the water-facing plate (13).
5. The manufacturing method of the nano modified mildew-proof phosphogypsum partition board according to claim 4, is characterized in that: the bottom surface of agitator (2) is by all around to the middle step-down gradually, and discharge gate (5) are located the minimum.
6. The manufacturing method of the nano modified mildew-proof phosphogypsum partition board according to claim 5, is characterized in that: the stirring plate (11) is rhombic, and a water-drop-shaped turbulence hole (19) is formed in the center of the stirring plate (11).
7. The manufacturing method of the nanometer modified mildew-proof phosphogypsum partition board according to claim 6, is characterized in that: a shaft support assembly is further arranged on the stirring shaft (7) above the second stirring assembly, the shaft support assembly comprises a plurality of supporting rods (20) uniformly arranged around the stirring shaft (7), the supporting rods (20) extend along the radial direction of the stirring shaft (7), one end of each supporting rod is fixedly connected with the stirring shaft (7), and the other end of each supporting rod is provided with a roller (21); be provided with round and gyro wheel (21) matched with guide way (22) along circumference on the inner wall of agitator (2), the position of guide way (22) is relative with gyro wheel (21), gyro wheel (21) stretch into in guide way (22) and contact with the tank bottom of guide way (22).
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| CN201811132057.1A CN108975856B (en) | 2018-09-27 | 2018-09-27 | Method for manufacturing nano modified mildew-proof phosphogypsum partition board |
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| CN108975856B true CN108975856B (en) | 2021-05-14 |
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| JP2002087858A (en) * | 2000-09-18 | 2002-03-27 | Denki Kagaku Kogyo Kk | Cement admixing agent and cement composition |
| CA2662229A1 (en) * | 2006-08-29 | 2008-03-06 | Nathalie Agnes Gaillard | Gypsum building boards |
| CN101747008A (en) * | 2009-12-24 | 2010-06-23 | 北京联飞翔科技股份有限公司 | Plastering mortar material and preparing method thereof |
| CN102702889A (en) * | 2012-06-01 | 2012-10-03 | 安徽省金盾涂料有限责任公司 | Anti-bacterial water-based paint and preparation method thereof |
| CN102910886A (en) * | 2012-11-13 | 2013-02-06 | 张振民 | Silico-calcium light wall board and preparation method thereof |
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2018
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002087858A (en) * | 2000-09-18 | 2002-03-27 | Denki Kagaku Kogyo Kk | Cement admixing agent and cement composition |
| CA2662229A1 (en) * | 2006-08-29 | 2008-03-06 | Nathalie Agnes Gaillard | Gypsum building boards |
| CN101747008A (en) * | 2009-12-24 | 2010-06-23 | 北京联飞翔科技股份有限公司 | Plastering mortar material and preparing method thereof |
| CN102702889A (en) * | 2012-06-01 | 2012-10-03 | 安徽省金盾涂料有限责任公司 | Anti-bacterial water-based paint and preparation method thereof |
| CN102910886A (en) * | 2012-11-13 | 2013-02-06 | 张振民 | Silico-calcium light wall board and preparation method thereof |
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