CN114105524B - Preparation process of heat-preservation type expanded perlite composite material for building - Google Patents
Preparation process of heat-preservation type expanded perlite composite material for building Download PDFInfo
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- CN114105524B CN114105524B CN202111438181.2A CN202111438181A CN114105524B CN 114105524 B CN114105524 B CN 114105524B CN 202111438181 A CN202111438181 A CN 202111438181A CN 114105524 B CN114105524 B CN 114105524B
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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
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/10—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B26/14—Polyepoxides
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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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/10—Coating or impregnating
- C04B20/1055—Coating or impregnating with inorganic materials
- C04B20/1074—Silicates, e.g. glass
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Abstract
The invention discloses a preparation process of a heat-preservation type expanded perlite composite material for buildings, which belongs to the technical field of building materials and can be used for crushing and grading expanded perlite, sorting the expanded perlite into two kinds of expanded perlite with large particle size and small particle size, simultaneously infiltrating a foam raw material to form an adhesive film layer on the surface, mixing the expanded perlite with mortar powder and then filling the mixture into a weight balancing belt, putting the foam raw material into the weight balancing belt and then naturally rolling down, adsorbing the expanded perlite and the mortar powder in the rolling down process to complete weight increment, wherein the weighted foam raw material not only has certain strength, but also keeps the weight close to that of the expanded perlite with large particle size, can be fully and uniformly mixed in the mixing process, and finally can effectively improve the forming quality in the compounding process.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a preparation process of a heat-preservation type expanded perlite composite material for buildings.
Background
With the energy shortage and the environmental problems brought by energy utilization in the world, resources, energy and environmental protection are three major tests restricting the current sustainable development of human society and economy, and energy conservation, consumption reduction and emission reduction are effective ways for realizing the sustainable development of society and economy. Besides the efficient conversion of energy and the reasonable development of renewable energy, the key to fully improve the utilization efficiency of energy is also energy conservation. The heat insulation material can effectively reduce the heat loss accompanying the heat in the processes of generation, transportation, storage, use and the like, is widely applied to the fields of buildings, chemical engineering, electronics, clothing, aerospace and the like, and becomes an important way for improving the energy utilization efficiency and realizing energy conservation, consumption reduction and emission reduction. Therefore, the research on the novel light, efficient and structurally stable heat insulation composite material has very important significance for realizing the efficient utilization of resources and energy, saving consumption, reducing emission and sustainable development of human environment and society. Various materials are required from a main body structure to decoration construction of a building, in order to save energy, the requirements on heat insulation of the outer walls of residential houses and commercial houses are higher and higher at present, and heat insulation building materials also become research and development objects of various building material manufacturers and improve the heat insulation effect of conventional building materials.
The expanded perlite is a natural acidic vitreous lava, a nonmetallic mineral product, and comprises perlite, pitchstone and obsidian, and the perlite, the pitchstone and the obsidian are different only in crystal water content. Since the volume of the perlite rapidly expands 4 to 30 times under the high temperature condition of 1000 to 1300 ℃, the perlite is called expanded perlite. Generally, the expansion factor is required to be 7 to 10 times (obsidian 3 times, usable), and the silica content is about 70%. All are open pit mining. The ore dressing is not needed, and only the crushing and the screening are needed.
The expanded perlite and the recycled foam material which are commonly used in the building are compounded for use, so that the building composite material has good heat insulation performance, and simultaneously can save resources, but because the density of the foam material is lower, the foam material is difficult to be uniformly mixed when being mixed with the expanded perlite, and because the density of the expanded perlite is higher and the weight of the expanded perlite is also higher, the foam material always has the tendency of downward sedimentation in the mixing process, and the forming quality is poorer in the final compounding process.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a preparation process of a heat-preservation type expanded perlite composite material for buildings, which can be used for crushing and grading expanded perlite, sorting the expanded perlite into two expanded perlite with large particle size and small particle size, simultaneously soaking a foam raw material to form an adhesive film layer on the surface, mixing the expanded perlite with small particle size and mortar powder, filling the mixture into a weight balancing belt, putting the foam raw material into the weight balancing belt, then naturally rolling down the foam raw material, adsorbing the expanded perlite and the mortar powder in the rolling down process to complete weight increment, wherein the foam raw material after weight increment not only has certain strength, but also keeps the weight close to that of the expanded perlite with large particle size, can be fully and uniformly mixed in the mixing process, and finally can effectively improve the forming quality in the compounding process.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A preparation process of a heat-preservation type expanded perlite composite material for buildings comprises the following steps:
s1, soaking a foam material into an adhesive, filtering and taking out the foam material, and forming an adhesive film layer on the surface of the foam material;
s2, grinding the expanded perlite for two times, sieving to obtain a raw material with a large particle size and a raw material with a small particle size, mixing the raw material with the small particle size and mortar powder, and filling the mixture into a weight belt;
s3, rolling down the foam material along the counterweight belt, adsorbing the raw material with small particle size by using the adhesive film layer, combining with the mortar powder for weight increment, and then heating and curing to obtain a composite material;
s4, fully and uniformly mixing the composite material with the raw material with large particle size, and adding the rest adhesive for full mixing and permeation;
and S5, injecting the mixture into a mold, pressing and molding by using a press machine, and heating and curing to obtain the heat-preservation expanded perlite composite material.
Further, the expanded perlite, the foam material and the adhesive are respectively 100 parts, 1-10 parts and 5-15 parts by weight.
Furthermore, the particle diameter ratio of the raw material with large particle size to the foam material is 0.8-1:1, and the particle diameter ratio of the raw material with small particle size to the mortar powder to the foam material is 0.05-0.1.
Furthermore, 0.1-0.5 part of glass fiber is doped in the adhesive.
Further, the counter weight area includes oblique conduction band, the runner that inclines down has been seted up to oblique conduction band inboard, be provided with many evenly distributed's counter weight channel on the runner, inlay on the counter weight channel and install a plurality of evenly distributed's the pocket of throwing, install a plurality of and throw the magnetic control platform that the pocket is corresponding on the runner roof, utilize the magnetic control platform to the magnetic attraction effect of throwing the pocket for throw the pocket upwards deformation and shed the expanded perlite and the mortar powder of small particle size, thereby adsorbed the realization that is absorbed by the foam raw materials of the roll-off in-process and increase weight, and adsorb comparatively evenly.
Furthermore, the throwing material bag includes material bearing film, magnetism piece and separation net of inhaling, set up a plurality of recesses that match with the material bearing film on the counter weight channel, magnetism piece is inlayed and is connected in material bearing film center department, separation net fixed connection is in notch opening department, the raw materials and the mortar powder of small-particle size are laid in the material bearing film, and after magnetism piece received the magnetism effect of accuse magnetic table, drive material bearing film and upwards deform, received the block back of separation net, the expanded perlite and the mortar powder of small-particle size can continue to rise under the inertial action and contact with the foam raw materials to be adsorbed and realize the weight gain to the foam raw materials.
Furthermore, the opening area of the material bearing film is larger than the sectional area of the foam raw material, so that the expanded perlite and the mortar powder with small particle size can be fully contacted with the foam raw material, redundant materials continuously rise and are concentrated by the magnetic control platform, and then fall to the upper side of the foam raw material, and the whole uniform weight increment of the foam raw material is realized.
Further, accuse magnetism platform is restrainted including receiving material platform, electro-magnet and elasticity interception, the electro-magnet is inlayed and is installed in the center department of receiving the material platform, elasticity interception is restrainted fixed connection and is received the material platform downside, and the electro-magnet can intermittent type nature and exert magnetic field and adsorb the piece to magnetism to make and hold the material membrane and realize throwing the action, unnecessary material rises to receiving after the material platform department, can be concentrated to center department and then fall under the convergence effect of receiving the material platform, thereby weight gain to foam raw materials first half, elasticity interception is restrainted and is played the effect of blocking temporarily to foam raw materials, thereby make foam raw materials have abundant time and weight gain, and overcome the hindrance effect that elasticity interception was restrainted and continue to fall after weighing to certain degree.
Furthermore, the bottom surface of the material receiving platform is in an upwards-concave arc surface shape, and the opening area of the material receiving platform is larger than that of the material bearing film.
Further, the use method of the weight belt comprises the following steps:
a. the foam material rolls down along the counterweight channel, and the magnetic control table intermittently applies a magnetic field;
b. when the magnetic control table applies a magnetic field, the material throwing bag deforms upwards to throw the raw materials with small particle size and the mortar powder, so that the raw materials and the mortar powder are adsorbed by the adhesive film layer of the foam material;
c. at the moment, the lower end of the foam material adsorbs the upper material, and the redundant material rises to the magnetic control table to be concentrated and then falls down to be adsorbed by the upper end of the foam material;
d. when the foam material is adsorbed to enough material to complete weight increase, the foam material overcomes the blocking effect of the magnetic control table and continuously rolls off to be collected.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) This scheme can be through carrying out broken classification to expanded perlite, select separately two kinds of expanded perlite for big particle size and small particle size, soak the processing to the foam raw materials simultaneously, make and form the adhesive film layer on the surface, it loads to the counter weight in-band to get the expanded perlite of small particle size and the mortar powder after mixing, drop foam raw materials into and roll naturally after the counter weight area, and adsorb expanded perlite and mortar powder and accomplish the weight gain at the roll-off in-process, the foam raw materials after the weight gain not only has certain intensity, weight and the expanded perlite of big particle size keep close simultaneously, can the intensive mixing even when mixing, finally can effectively improve shaping quality at composite process.
(2) The weight belt includes oblique conduction band, the decurrent runner of slope has been seted up to oblique conduction band inboard, be provided with many evenly distributed's counter weight channel on the runner, inlay on the counter weight channel and install a plurality of evenly distributed's the bag of throwing the material, install a plurality of and throw the corresponding accuse magnetic bench of material bag on the runner roof, utilize the magnetism of accuse magnetic bench to throwing the magnetic attraction effect of material bag, make to throw the material bag upwards deformation and shed the expanded perlite and the mortar powder of little particle diameter, thereby it realizes gaining in weight to be adsorbed by the foam raw materials of the roll-off in-process, and it is comparatively even to adsorb.
(3) The material throwing bag comprises a material bearing film, a magnetic absorption block and an isolation net, a plurality of grooves matched with the material bearing film are formed in a counterweight channel, the magnetic absorption block is connected to the center of the material bearing film in an embedded mode, the isolation net is fixedly connected to the opening of the groove, the raw materials with small particle sizes and the mortar powder are laid in the material bearing film, after the magnetic absorption block is subjected to the magnetic absorption effect of the magnetic control table, the material bearing film is driven to deform upwards, and after the magnetic absorption block is blocked by the isolation net, the expanded perlite and the mortar powder with small particle sizes can continuously rise under the inertia effect to be in contact with foam raw materials, so that the weight of the foam raw materials is increased by adsorption.
(4) Accuse magnetism platform is including receiving the material platform, electro-magnet and elasticity interception and restraint, the electro-magnet is inlayed and is installed in the center department of receiving the material platform, elasticity interception is restrainted fixed connection and is received the material platform downside, the electro-magnet can be intermittent type nature and is exerted magnetic field and inhale the piece of magnetism, thereby make and hold the material membrane and realize the action of shedding, unnecessary material rises to receiving after the material platform department, can be concentrated to center department and then fall under the convergence effect of receiving the material platform, thereby weight gain to foam raw materials upper half, elasticity interception is restrainted and is played the temporary blocking effect to foam raw materials, thereby make foam raw materials have abundant time and weight gain, and overcome the blocking effect that elasticity intercepted and restraint and continue to fall after gaining to certain degree.
Drawings
FIG. 1 is a schematic flow diagram of the present invention;
FIG. 2 is a schematic view of the construction of the weight belt of the present invention;
FIG. 3 is a schematic view of the normal configuration of the weight channel of the present invention;
FIG. 4 is a schematic view of the structure at A in FIG. 3;
FIG. 5 is a schematic view of the configuration of the weight channel of the present invention in use;
FIG. 6 is a schematic structural diagram of a magnetic control stage according to the present invention;
FIG. 7 is a schematic structural view of the foam feedstock of the present invention before and after weight gain;
fig. 8 is a schematic diagram of the structure of the present invention in composite contrast with the prior art.
The reference numbers in the figures illustrate:
the device comprises an inclined guide belt 1, a counterweight channel 2, a throwing bag 3, a material bearing film 31, a magnetic suction block 32, an isolation net 33, a magnetic control table 4, a material receiving table 41, an electromagnet 42 and an elastic interception beam 43.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
referring to fig. 1, a process for preparing a thermal insulation type expanded perlite composite material for construction includes the following steps:
s1, soaking a foam material into an adhesive, filtering and taking out the foam material, and forming an adhesive film layer on the surface of the foam material;
s2, grinding the expanded perlite for two times, sieving to obtain a raw material with a large particle size and a raw material with a small particle size, mixing the raw material with the small particle size and mortar powder, and filling the mixture into a weight belt;
s3, rolling down the foam material along the counterweight belt, adsorbing the raw material with small particle size by using an adhesive film layer, combining the raw material with mortar powder for weight increment, and then heating and curing to obtain a composite material;
s4, fully and uniformly mixing the composite material with the raw material with large particle size, and adding the rest adhesive for full mixing and permeation;
and S5, injecting the mixture into a mold, pressing and molding by using a press machine, and heating and curing to obtain the heat-preservation type expanded perlite composite material.
The expanded perlite, the foam material and the adhesive are respectively 100 parts, 1-10 parts and 5-15 parts by weight.
The foam material can be polyurethane foam material, and the adhesive can be epoxy resin adhesive.
The particle diameter ratio of the raw material with large particle size to the foam material is 0.8-1:1, and the particle diameter ratio of the raw material with small particle size to the foam material is 0.05-0.1.
0.1-0.5 part of glass fiber is added into the adhesive.
Referring to fig. 2-3, the weight belt includes an oblique guide belt 1, a flow channel inclined downward is disposed on the inner side of the oblique guide belt 1, a plurality of weight channels 2 distributed uniformly are disposed on the flow channel, a plurality of material throwing bags 3 distributed uniformly are mounted on the weight channels 2 in an embedded manner, a plurality of magnetic control tables 4 corresponding to the material throwing bags 3 are mounted on the top wall of the flow channel, and the material throwing bags 3 are deformed upwards to throw expanded perlite and mortar powder with small particle size by utilizing the magnetic attraction effect of the magnetic control tables 4 on the material throwing bags 3, so that the expanded perlite and the mortar powder are adsorbed by foam raw materials in the tumbling process to realize weight increase and the adsorption is uniform.
Referring to fig. 4-5, the material throwing bag 3 includes a material bearing film 31, a magnetic absorption block 32 and an isolation net 33, a plurality of grooves matched with the material bearing film 31 are formed on the counterweight channel 2, the magnetic absorption block 32 is connected to the center of the material bearing film 31 in an embedded manner, the isolation net 33 is fixedly connected to the opening of the grooves, the small-particle-size raw material and the small-particle-size mortar powder are laid in the material bearing film 31, the material bearing film 31 is driven to deform upwards after the magnetic absorption block 32 is subjected to the magnetic absorption effect of the magnetic control table 4, and the small-particle-size expanded perlite and the small-particle-size mortar powder can continuously rise under the inertia effect to contact with the foam raw material after being blocked by the isolation net 33, so that the weight increment of the foam raw material can be realized by absorption.
The opening area of the material bearing film 31 is larger than the sectional area of the foam raw material, so that the expanded perlite and the mortar powder with small particle size can be ensured to be in full contact with the foam raw material, redundant materials continuously rise and are concentrated by the magnetic control table 4, and then fall to the upper side of the foam raw material, and the whole uniform weight increment of the foam raw material is realized.
Referring to fig. 6, the magnetic control table 4 includes a material receiving table 41, an electromagnet 42, and an elastic intercepting beam 43, the electromagnet 42 is mounted at the center of the material receiving table 41 in an embedded manner, the elastic intercepting beam 43 is fixedly connected to the lower side of the material receiving table 41, the electromagnet 42 can intermittently apply a magnetic field to attract the magnetic attraction block 32, so that the material receiving film 31 is thrown, after the excessive material rises to the material receiving table 41, the excessive material can be concentrated to the center under the convergence effect of the material receiving table 41 and then fall, so as to increase the weight of the upper half part of the foam material, the elastic intercepting beam 43 plays a temporary blocking effect on the foam material, so that the foam material has sufficient time to increase the weight, and after the weight is increased to a certain degree, the elastic intercepting beam 43 overcomes the blocking effect to continuously fall.
The bottom surface of the material receiving platform 41 is in an upwardly concave arc shape, and the opening area of the material receiving platform 41 is larger than that of the material bearing film 31.
Referring to fig. 7, the method for using the weight belt includes the following steps:
a. the foam material rolls down along the counterweight channel 2, and the magnetic control table 4 intermittently applies a magnetic field;
b. when the magnetic control table 4 applies a magnetic field, the material throwing bag 3 deforms upwards to throw the raw materials and the mortar powder with small particle size, so that the raw materials and the mortar powder are adsorbed by the adhesive film layer of the foam material;
c. at the moment, the lower end of the foam material adsorbs the upper material, and the redundant material rises to the magnetic control table 4 to be concentrated and then falls down to be adsorbed by the upper end of the foam material;
d. when the foam material is adsorbed to enough material to complete weight increase, the foam material overcomes the obstruction of the magnetic control platform 4 and continuously rolls down to be collected.
Referring to fig. 8, the expanded perlite can be crushed and classified into two kinds of expanded perlite with large particle size and small particle size, the foam raw material is infiltrated to form an adhesive film layer on the surface, the expanded perlite with small particle size and the mortar powder are mixed and then filled into the weight balance belt, the foam raw material is put into the weight balance belt and then naturally rolls off, and the expanded perlite and the mortar powder are adsorbed in the rolling off process to complete weight increase, so that the weighted foam raw material not only has certain strength, but also keeps the weight close to that of the expanded perlite with large particle size, can be fully and uniformly mixed in the mixing process, and finally can effectively improve the forming quality in the compounding process.
The above are merely preferred embodiments of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.
Claims (7)
1. A preparation process of a heat-preservation type expanded perlite composite material for buildings is characterized by comprising the following steps: the method comprises the following steps:
s1, soaking a foam material into an adhesive, filtering and taking out the foam material, and forming an adhesive film layer on the surface of the foam material;
s2, grinding the expanded perlite for two times, sieving to obtain a raw material with a large particle size and a raw material with a small particle size, mixing the raw material with the small particle size and mortar powder, and filling the mixture into a weight belt;
s3, rolling down the foam material along the counterweight belt, adsorbing the raw material with small particle size by using the adhesive film layer, combining with the mortar powder for weight increment, and then heating and curing to obtain a composite material;
s4, fully and uniformly mixing the composite material with the raw material with large particle size, and adding the rest adhesive for full mixing and permeation;
s5, injecting the mixture into a mold, pressing and molding by using a press machine, and heating and curing to obtain the heat-preservation expanded perlite composite material;
the weight belt comprises an inclined guide belt (1), a downward inclined runner is arranged on the inner side of the inclined guide belt (1), a plurality of evenly distributed weight channels (2) are arranged on the runner, a plurality of material throwing bags (3) which are evenly distributed are inlaid on the weight channels (2), a plurality of magnetic control platforms (4) corresponding to the material throwing bags (3) are arranged on the top wall of the runner, each material throwing bag (3) comprises a material bearing film (31), a magnetic suction block (32) and an isolation net (33), a plurality of grooves matched with the material bearing film (31) are formed in the weight channels (2), the magnetic suction block (32) is inlaid and connected to the center of the material bearing film (31), the isolation net (33) is fixedly connected to the opening of the grooves, the raw materials and the mortar powder with small particle sizes are laid in the material bearing film (31), each magnetic control platform (4) comprises a material collecting platform (41), an electromagnet (42) and an elastic interception beam (43), the electromagnet (42) is inlaid and installed at the center of the material collecting platform (41), and the elastic interception beam (43) is fixedly connected to the lower side of the material collecting platform (41).
2. The preparation process of the heat-preservation type expanded perlite composite material for the building as claimed in claim 1, is characterized in that: the expanded perlite, the foam material and the adhesive are respectively 100 parts, 1-10 parts and 5-15 parts by weight.
3. The preparation process of the heat-preservation type expanded perlite composite material for the building as claimed in claim 1, is characterized in that: the particle diameter ratio of the raw material with large particle size to the foam material is 0.8-1:1, and the particle diameter ratio of the raw material with small particle size to the mortar powder to the foam material is 0.05-0.1.
4. The preparation process of the heat-preservation type expanded perlite composite material for the building as claimed in claim 2, is characterized in that: 0.1-0.5 part of glass fiber is added into the adhesive.
5. The preparation process of the heat-preservation type expanded perlite composite material for the building as claimed in claim 1, is characterized in that: the opening area of the material bearing film (31) is larger than the sectional area of the foam raw material.
6. The preparation process of the heat-preservation type expanded perlite composite material for the building as claimed in claim 1, is characterized in that: the bottom surface of the material receiving platform (41) is in an upwards sunken arc shape, and the opening area of the material receiving platform (41) is larger than that of the material bearing film (31).
7. The preparation process of the heat-preservation type expanded perlite composite material for the building as claimed in claim 1, is characterized in that: the use method of the weight belt comprises the following steps:
a. the foam material rolls down along the counterweight channel (2), and the magnetic control table (4) intermittently applies a magnetic field;
b. when the magnetic control table (4) applies a magnetic field, the material throwing bag (3) deforms upwards to throw out the raw materials and the mortar powder with small particle size, so that the raw materials and the mortar powder are adsorbed by the adhesive film layer of the foam material;
c. at the moment, the lower end of the foam material adsorbs the upper material, and the redundant material rises to the magnetic control table (4) to be concentrated and then falls down to be adsorbed by the upper end of the foam material;
d. when the foam material is adsorbed to enough material to complete weight increase, the foam material overcomes the blocking effect of the magnetic control table (4) and continuously rolls off to be collected.
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| CN102167529B (en) * | 2010-12-29 | 2013-01-02 | 北京工业大学 | Thermal insulation fire-proof aggregate with polystyrene particle-coated expanded and vitrified bead mortar and preparation method thereof |
| CN103183496A (en) * | 2011-11-22 | 2013-07-03 | 北京市建筑工程研究院有限责任公司 | Foamed plastic powder/expanded perlite flame-retardant and heat-insulating composite material |
| DE102015218288A1 (en) * | 2015-09-23 | 2017-03-23 | Hochschule Wismar | Insulating board and method for producing an insulating board |
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