CN111606639B - Mineral wool acoustic board and preparation method thereof - Google Patents

Mineral wool acoustic board and preparation method thereof Download PDF

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Publication number
CN111606639B
CN111606639B CN201910155341.9A CN201910155341A CN111606639B CN 111606639 B CN111606639 B CN 111606639B CN 201910155341 A CN201910155341 A CN 201910155341A CN 111606639 B CN111606639 B CN 111606639B
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mineral wool
board
parts
flocculant
slurry
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CN111606639A (en
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尹东杰
王鹏起
王莹
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Beijing New Building Material Group Co Ltd
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Beijing New Building Material Group Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • 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
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00017—Aspects relating to the protection of the environment
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00025—Aspects relating to the protection of the health, e.g. materials containing special additives to afford skin protection
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/52—Sound-insulating materials
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Paper (AREA)
  • Building Environments (AREA)

Abstract

The invention discloses a mineral wool sound-absorbing board and a preparation method thereof, wherein the formula of the mineral wool sound-absorbing board comprises, by weight, 100-150 parts of mineral wool fibers, 120-28 parts of a binding material, 5-10 parts of a binding material 2 starch, 11.5-2.5 parts of a flocculating agent, 21-3 parts of a flocculating agent and 0.4-2.0 parts of emulsified paraffin. Weighing the bonding material, uniformly mixing the bonding material 1 to prepare bonding slurry for later use, fully stirring the flocculant 1, the mineral wool fiber, the bonding material 2, the starch, the flocculant 2 and the emulsified paraffin diluted by water in a stirrer with water to obtain mixed slurry, then forming the mixed slurry, drying to obtain a semi-finished mineral wool board wet board, spraying the bonding slurry on the surface of the mineral wool board wet board, and carrying out post-treatment to obtain a finished product. The mineral wool sound-absorbing board uses the phosphogypsum as the binding material, so that the application range of the phosphogypsum is expanded, the stacking of harmful substances is reduced, and the effect of resource recycling is achieved.

Description

Mineral wool acoustic board and preparation method thereof
Technical Field
The invention relates to the field of building materials, in particular to a mineral wool acoustic board and a preparation method thereof.
Background
The mineral wool sound absorption board is a top-grade suspended ceiling decoration material which integrates multiple functions of heat preservation, heat insulation, sound absorption, fire prevention, decoration and the like and is processed by more than ten procedures of batching, forming dehydration, gelatinization drying, cutting, planing and milling, finish machining, spraying, packaging and the like by taking blast furnace slag wool as a main raw material and starch as a main binder and adding a proper amount of auxiliary agents and additives.
Currently, in the production process of mineral wool boards, the used adhesive is mostly attapulgite clay. With the continuous exploitation and development of attapulgite clay, mineral resources are relatively in short supply, the application level is continuously improved, and the application of the attapulgite clay is continuously developed towards high value-added products and high-end products, so that the attapulgite clay is limited in the low-end application of building materials. Therefore, there is a need for a new bonding material for mineral wool boards to replace attapulgite clay.
The phosphogypsum is an industrial byproduct in the process of preparing phosphoric acid by a wet method, about 5 tons of phosphogypsum are generated when 1 ton of phosphoric acid is produced, and the accumulated storage amount of the phosphogypsum in China currently exceeds 3 hundred million tons. The annual cost for stacking phosphogypsum is up to millions yuan. Because the phosphogypsum contains harmful substances, a large amount of the phosphogypsum is discharged, so that the cost is increased, a large area of field is occupied for stacking, the environment is polluted, and the harm is brought to the human health and the ecological environment.
Disclosure of Invention
In order to solve the technical problems, the invention provides a mineral wool acoustic board and a preparation method thereof, which expand the application range of phosphogypsum by using the phosphogypsum to replace attapulgite clay as a bonding material, reduce the stacking quantity of the phosphogypsum and reduce the mining quantity of attapulgite clay mineral resources.
In order to achieve the object of the present invention, the present invention provides a mineral wool board and a method for preparing the same;
in the mineral wool sound-absorbing board provided by the invention, the raw materials of the mineral wool sound-absorbing board comprise, by weight, 100-150 parts of mineral wool fibers, 120-28 parts of a binder, 5-10 parts of 2 starch of the binder, 11.5-2.5 parts of a flocculant, 21-3 parts of a flocculant and 0.4-2.0 parts of emulsified paraffin; alternatively, the mineral wool sound-absorbing board of the invention is composed of the above raw materials.
In the mineral wool sound-absorbing board provided by the invention, the binder 1 comprises phosphogypsum.
In the mineral wool sound-absorbing panel provided by the invention, the binder 1 further comprises one or two of heavy calcium carbonate and zeolite. Optionally, the binder 1 is one or more of phosphogypsum, heavy calcium carbonate and zeolite.
In the mineral wool sound-absorbing board provided by the invention, the binding material 1 consists of phosphogypsum, heavy calcium carbonate and zeolite, wherein the weight ratio of the phosphogypsum to the heavy calcium carbonate is as follows: the weight ratio of the heavy calcium to the zeolite is 100 (5-20) to 2-10.
In the mineral wool sound-absorbing board provided by the invention, the phosphogypsum is 80 meshes, the coarse whiting is 200-500 meshes and the zeolite is 325 meshes.
In the mineral wool sound-absorbing board provided by the invention, the binding material is mixed with water to prepare binding slurry, and the mass ratio of the water to the binding material is 0.5-0.75.
In the mineral wool sound-absorbing board provided by the invention, the flocculating agent 1 is selected from one or more of polyacrylamide, sodium polyacrylate, sodium polystyrene sulfonate and poly dimethyl diallyl ammonium chloride;
in the mineral wool sound-absorbing board provided by the invention, the flocculating agent 2 is selected from one or more of aluminum sulfate, polyoxyethylene ferric chloride, ferrous sulfate and polyaluminium chloride.
In another aspect, the present invention provides a method for preparing the above mineral wool sound-absorbing board, wherein the method comprises the following steps:
step 1: weighing the components of the binder 1 respectively;
step 2: fully stirring the bonding material 1 in water, ultrasonically dispersing, and uniformly mixing to prepare bonding slurry;
and step 3: weighing other components of the mineral wool board;
and 4, step 4: diluting flocculant 1 with water to 10-40 wt.%;
and 5: fully stirring mineral wool fibers, a flocculant 1 aqueous solution, a binding material 2 starch, a flocculant 2, emulsified paraffin and water to obtain mixed slurry;
step 6: forming the mixed slurry, and drying to obtain a semi-finished mineral wool board wet board;
and 7: uniformly spraying the bonding slurry prepared in the step 2 on the surface of the wet mineral wool board;
and 8: and (4) carrying out post-treatment on the wet mineral wool board sprayed with the bonding slurry to obtain a finished product.
In the preparation method of the mineral wool sound-absorbing board, the ultrasonic power of the ultrasonic dispersion in the step 2 is 500-1500W, and the time is 5-20 min;
in the preparation method of the mineral wool sound-absorbing board, the solid content of the mixed slurry in the step 5 is 4-6 wt.%;
in the preparation method of the mineral wool acoustic board provided by the invention, the mixed slurry in the step 6 is formed by wet-method copying and forming on a fourdrinier wire and high-pressure water cutting and forming by a cutting machine; the drying is carried out for 1 hour at the temperature of 240 ℃ and 280 ℃ in a drying machine;
in the preparation method of the mineral wool sound-absorbing board, the spraying in the step 7 is airless spraying; the thickness of the sprayed bonding slurry is 0.5-2 mm.
In the preparation method of the mineral wool sound-absorbing board provided by the invention, the post-treatment in the step 8 comprises cutting according to the product specification, planing, surface finishing, packaging and warehousing after passing inspection.
In the preparation method of the mineral wool acoustic board provided by the invention, optionally, zeolite and water are fully stirred and fully dispersed, phosphogypsum and heavy calcium powder are added, ultrasonic dispersion is carried out at fixed power of 980W for 10min, and bonding slurry is prepared by uniform mixing;
in the method for preparing the mineral wool sound-absorbing board provided by the invention, the processing method is optionally the same as the surface finishing method of the existing mineral wool board.
On the other hand, the invention also provides the application of the phosphogypsum as a binding material in the preparation process of the mineral wool sound-absorbing board.
The invention has the advantages that: the mineral wool acoustic board is prepared by replacing attapulgite clay with the binder prepared from the phosphogypsum powder, the mineral wool acoustic board has good bonding effect, and in the using process, harmful substances in the phosphogypsum powder are adsorbed by the adsorption material, namely zeolite, and are not released. On the other hand, the porous structure of the zeolite can also adsorb other harmful gases in the indoor air, and the effect of purifying the air is achieved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following detailed description is given in conjunction with the embodiments of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
In the embodiment of the invention, the raw materials of the mineral wool sound-absorbing board comprise, by weight, 100-150 parts of mineral wool fibers, 120-28 parts of a binder, 5-10 parts of 2 starch of the binder, 11.5-2.5 parts of a flocculant, 21-3 parts of the flocculant and 0.4-2.0 parts of emulsified paraffin; alternatively, the mineral wool sound-absorbing board of the invention is composed of the above raw materials.
In the present example, the binder 1 comprises phosphogypsum.
In the present embodiment, the binder 1 further includes one or both of heavy calcium carbonate and zeolite. Optionally, the binder 1 is one or more of phosphogypsum, heavy calcium carbonate and zeolite.
In the present example, the binder 1 consists of phosphogypsum, heavy calcium carbonate and zeolite, the phosphogypsum: the weight ratio of the heavy calcium to the zeolite is 100 (5-20) to 2-10.
In the embodiment of the invention, the phosphogypsum is 80 meshes, the coarse whiting is 200 meshes and 500 meshes and the zeolite is 325 meshes.
In the embodiment of the invention, the binding material is mixed with water to prepare the binding slurry, and the mass ratio of the water to the binding material is 0.5-0.75.
In the embodiment of the invention, the flocculant 1 is selected from one or more of polyacrylamide, sodium polyacrylate, sodium polystyrene sulfonate and polydimethyldiallyl ammonium chloride;
in the present embodiment, the flocculant 2 is one or more selected from the group consisting of aluminum sulfate, polyoxyethylene ferric chloride, ferrous sulfate, and polyaluminum chloride.
In the embodiment of the invention, the thickness of the sprayed bonding slurry is 0.5-2 mm.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The mineral wool fibers used in the following examples were common commercially available granular cotton; wherein the phosphogypsum is phosphogypsum powder produced by chemical group of Hubei Xingfeng GmbH; the coarse whiting is 200-mesh 500-mesh ultra-white coarse whiting powder purchased from Yandong mineral products Co., Ltd, Tianjin; polyacrylamide was purchased from chemical corporation, spaghetti, and analyzed; starch was purchased from south-china chemical company, ltd; aluminum sulfate was purchased from asia-pacific chemical co ltd, tin-free; emulsified paraffin was purchased from zheng han shuo chemical feedstock limited. Zeolites are commonly commercially available.
Example 1
Step 1: weighing the components of the binding material 1 and water to prepare binding slurry, 100 parts by weight of phosphogypsum, 6 parts by weight of heavy calcium, 2 parts by weight of zeolite and 56 parts by weight of water.
Step 2: fully stirring zeolite and water, fully dispersing, adding phosphogypsum, adding heavy calcium carbonate powder, ultrasonically dispersing at fixed power of 980W for 10min, and uniformly mixing to obtain the bonding slurry.
And step 3: weighing other components of the mineral wool board, mineral wool fiber: binder 1: binder 2 starch: flocculant 1 polyacrylamide: flocculant 2, aluminum sulfate: the weight ratio of the emulsified paraffin is as follows: 100: 28: 5: 1.5: 1.2: 0.4.
and 4, step 4: and (3) diluting the polyacrylamide serving as the flocculant 1 to 15 mass percent with water for later use.
And 5: and (3) fully stirring the mineral wool fibers, the binder 2 starch, the flocculant 1 polyacrylamide aqueous solution, the flocculant 2 aluminum sulfate and the emulsified paraffin with water in a stirrer, and outputting the mixture to a material returning machine, wherein the solid content of the mixed slurry is 4-6 wt.%.
Step 6: and (3) putting the mixed slurry on a long net, carrying out wet-method shoveling and forming, and cutting into large plates by high-pressure water of a cutting machine.
And 7: and (3) uniformly spraying the bonding slurry solution prepared in the step (2) on the surface of the wet mineral wool board in an airless spraying manner, wherein the thickness of the sprayed bonding slurry is 1 mm.
And 8: the large plate is conveyed to a drier through a distributor and is quickly dried for about 1 hour at the temperature of 240 ℃ and 280 ℃.
And step 9: and (4) taking the large plate out of the kiln to form a semi-finished product, cutting according to the product specification, and planing.
Step 10: the surface finish machining method is the same as the existing mineral wool board surface finish machining method.
Step 11: and (5) finishing to obtain a mineral wool board finished product with the thickness of 15mm, and packaging and warehousing after the mineral wool board is qualified.
Example 2
Example 2 was prepared identically to example 1, except that: weighing the components of the binding material 1 and water to prepare binding slurry, wherein 100 parts by weight of phosphogypsum, 10 parts by weight of heavy calcium, 4 parts by weight of zeolite and 68 parts by weight of water are weighed.
Weighing mineral wool fibers: binder 1: binder 2 starch: flocculant 1 sodium polystyrene sulfonate: flocculant 2 ferrous sulfate: the weight ratio of the emulsified paraffin is as follows: 100: 20: 10: 2.5: 2: 2. the other preparation process is the same as that of example 1, and a mineral wool board finished product with the thickness of 15mm is prepared.
Example 3
Example 3 was prepared identically to example 1, except that: weighing the components of the bonding material 1 and water to prepare bonding slurry, wherein 100 parts by weight of phosphogypsum, 20 parts by weight of heavy calcium, 7 parts by weight of zeolite and 82 parts by weight of water are weighed.
Weighing mineral wool fibers: binder 1: binder 2 starch: flocculant 1 polyacrylamide: flocculant 2, aluminum sulfate: the weight ratio of the emulsified paraffin is as follows: 100: 25: 8: 2: 2.8: 1.5. the other preparation process is the same as that of example 1, and a mineral wool board finished product with the thickness of 15mm is prepared.
Example 4
Example 4 was prepared identically to example 1, except that: weighing the components of the binding material 1 and water to prepare binding slurry, wherein 100 parts by weight of phosphogypsum, 20 parts by weight of heavy calcium, 10 parts by weight of zeolite and 90 parts by weight of water are weighed.
Weighing mineral wool fibers: binder 1: binder 2 starch: flocculant 1 sodium polystyrene sulfonate: flocculant 2, aluminum sulfate: the weight ratio of the emulsified paraffin is as follows: 100: 25: 8: 2: 2.8: 1.5. the other preparation process is the same as that of example 1, and a mineral wool board finished product with the thickness of 15mm is prepared.
Comparative example 1 (blank, without Attapulgite Clay nor Binder)
Comparative example 1 was prepared in the same manner as in example 1, except that: 100 parts by weight of mineral wool fiber, 5 parts by weight of modified starch, 1.5 parts by weight of polyacrylamide, 1.2 parts by weight of aluminum sulfate and 0.4 part by weight of emulsified paraffin are weighed under the condition that attapulgite clay and a binding material are not added. A mineral wool panel was prepared according to example 1 to produce a finished mineral wool sound-absorbing panel of 15mm thickness.
Comparative example 2 (Attapulgite Clay as binder)
Comparative example 2 was prepared in the same manner as in example 1, except that: the attapulgite clay is used, and 100 parts by weight of mineral wool fibers, 28 parts by weight of the attapulgite clay, 5 parts by weight of modified starch, 1.5 parts by weight of polyacrylamide, 1.2 parts by weight of aluminum sulfate and 0.4 part by weight of emulsified paraffin are weighed under the condition that other binding materials are not added. A mineral wool panel was prepared according to example 1 to produce a finished mineral wool sound-absorbing panel of 15mm thickness.
Comparative example 3
Commercially available common mineral wool acoustical panel a: amstershire RH90, 600mm by 600mm, 15mm thick mineral wool board.
Comparative example 4
Commercially available ordinary mineral wool acoustical panel B: purchased from north new construction 28095, state division, dragon brand 600mm, 15mm thick mineral wool board.
Test example
The mechanical properties of the samples were tested using the mineral wool boards prepared in examples 1 to 4 and the commercially available mineral wool boards prepared or purchased in comparative examples 1 to 4, with reference to the standard GB/T25998-2010 mineral decorative acoustical panel. The test results are shown in table 1.
TABLE 1 mineral wool Board mechanical Property test results
Figure BDA0001982717290000071
Figure BDA0001982717290000081
As can be seen from table 1, the comparison of examples 1, 2, 3, 4 with comparative example 1 shows that the preparation of mineral wool boards without using a binding material leads to a considerable reduction in the mechanical properties of the mineral wool boards, which is below the standard requirements. Examples 1, 2, 3, 4 are compared to comparative example 2, comparative examples 3 and 4, and demonstrate the feasibility of using binders prepared according to the present invention instead of attapulgite.
Although the embodiments of the present invention have been described above, the above descriptions are only for the convenience of understanding the present invention, and are not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (5)

1. The raw materials of the mineral wool sound-absorbing board comprise, by weight, 100-150 parts of mineral wool fibers, 120-28 parts of a binder, 25-10 parts of a binder, 11.5-2.5 parts of a flocculant, 21-3 parts of a flocculant and 0.4-2.0 parts of emulsified paraffin;
the flocculating agent 1 is selected from one of polyacrylamide, sodium polyacrylate and sodium polystyrene sulfonate;
the flocculant 2 is selected from aluminum sulfate;
the binding material 1 consists of phosphogypsum, heavy calcium carbonate and zeolite, and the binding material 2 is starch;
the weight ratio of the phosphogypsum, the heavy calcium and the zeolite is 100 (5-20) to (2-10);
fully stirring the bonding material 1 in water, ultrasonically dispersing, and uniformly mixing to prepare bonding slurry;
uniformly spraying the bonding slurry on the surface of the semi-finished mineral wool board wet board;
the phosphogypsum is 80 meshes, the coarse whiting is 200-500 meshes and the zeolite is 325 meshes;
mixing the binder 1 with water to prepare a binder slurry, wherein the mass ratio of the water to the binder 1 is 0.5-0.75;
the semi-finished mineral wool board wet board is prepared by the following steps: diluting flocculant 1 with water to 10-40 wt.%; fully stirring mineral wool fibers, a flocculant 1 aqueous solution, a bonding material 2, a flocculant 2, emulsified paraffin and water to obtain mixed slurry; and forming and drying the mixed slurry to obtain a semi-finished mineral wool board wet board.
2. A process for the production of the mineral wool sound-absorbing panel according to claim 1, comprising the following steps:
step 1: weighing the components of the binder 1 respectively;
step 2: fully stirring the bonding material 1 in water, ultrasonically dispersing, and uniformly mixing to prepare bonding slurry;
and step 3: weighing other components of the mineral wool board;
and 4, step 4: diluting flocculant 1 with water to 10-40 wt.%;
and 5: fully stirring mineral wool fibers, a flocculant 1 aqueous solution, a bonding material 2, a flocculant 2, emulsified paraffin and water to obtain mixed slurry;
step 6: forming the mixed slurry, and drying to obtain a semi-finished mineral wool board wet board;
and 7: uniformly spraying the bonding slurry prepared in the step 2 on the surface of the semi-finished mineral wool board wet board;
and 8: and (4) carrying out post-treatment on the wet mineral wool board sprayed with the bonding slurry to obtain a finished product.
3. The method for producing mineral wool sound-absorbing panel according to claim 2,
the ultrasonic power of the ultrasonic dispersion in the step 2 is 500-1500W, and the time is 5-20 min.
4. The method for producing mineral wool sound-absorbing panel according to claim 2,
the solid content of the mixed slurry in the step 5 is 4-6 wt.%;
step 6, forming the mixed slurry by wet-method copying and forming the mixed slurry on a fourdrinier wire, and cutting the mixed slurry into a shape by high-pressure water of a cutting machine; the drying is carried out for 1 hour at the temperature of 240 ℃ and 280 ℃ in a drying machine;
the spraying in the step 7 is airless spraying; the thickness of the sprayed bonding slurry is 0.5-2 mm.
5. The process for the production of mineral wool sound-absorbing panel according to any one of claims 2 to 4,
and 8, carrying out post-treatment, namely cutting according to the specification of the product, planing, carrying out surface finish machining, packaging and warehousing after the inspection is qualified.
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JP3979700B2 (en) * 1997-05-23 2007-09-19 大建工業株式会社 Sound-absorbing, sound-absorbing and releasing board
CN102400498B (en) * 2010-09-15 2014-04-09 北新集团建材股份有限公司 Enhanced mineral cotton acoustic board and preparation method thereof
CN103321312A (en) * 2012-10-23 2013-09-25 北新集团建材股份有限公司 Production method of mineral wool boards
CN205907890U (en) * 2016-08-22 2017-01-25 成都上筑建材有限公司 Portable syllable -dividing wallboard
CN109133729B (en) * 2017-06-28 2020-08-25 北新集团建材股份有限公司 Anion mineral wool board and preparation method thereof
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