JP2008285559A - Sponge-like blasting material, method and apparatus for producing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sponge-like blasting material capable of producing the blasting material hardly splashing, at a low cost, also reducing the working cost of blasting process widely and also contributing the reuse of industrial waste materials, a method for producing the same and an apparatus for the same. <P>SOLUTION: This sponge-like blasting material is characterized by fixing granular materials produced by crushing slag obtained after melting at least one of the industrial waste materials consisting of rubble, rubber waste, glass waste, waste plastics, mineral resource, soot dust, concrete waste, cinder and waste metals, in a porous elastic material. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a sponge blast material, a method for manufacturing the same, and a manufacturing apparatus, and more particularly, to a sponge blast material used as a blast medium for adjusting a substrate surface of a painted surface, and a method for manufacturing the same.

  When repainting the painted wall surface, as a preliminary work, a blasting operation is performed in which the coating film on the steel wall surface is ground, and the ground painted surface is roughened to prepare a substrate. For example, a suppression chamber installed in a nuclear reactor containment vessel of a nuclear power plant facility is painted by repeatedly applying a plurality of paints excellent in corrosion resistance, decontamination property, and the like. In addition, the repainting work is carried out around 10 years after the start of operation, but as a pre-work for the repainting work, the coating film containing radioactive material on the inner surface is ground to roughen the painted surface. Grinding and decontamination work is performed to adjust the substrate.

This grinding and decontamination work is performed by sandblasting method, and blasting material such as steel grit injected with high-speed air is made to collide with the work piece, and the surface of the work piece is ground and roughened by the impact force. (For example, Patent Document 1).
JP 2006-130618 A

  However, since the conventional blasting material used expensive grinding materials such as steel grid, alumina, starlight, urea resin, etc., there was a problem that the construction cost of the blasting work increased. Further, in the blasting operation, since the blasting material collided with the workpiece rebounds with a strong force, the dust is easily scattered, and it is necessary to take measures not only for the cost of construction but also for preventing the blasting material from scattering.

  The present invention has been made in view of such circumstances, and can produce a blasting material that hardly scatters at low cost, and can greatly reduce the construction cost of blasting work, and reuse industrial waste. Another object of the present invention is to provide a sponge-like blasting material that can also contribute to the above, a manufacturing method thereof, and a manufacturing apparatus.

  In order to achieve the above object, the sponge blast material according to claim 1 is an industrial waste such as rubble, rubber waste, glass waste, waste plastic, mineral resources, dust, concrete waste, burning husk, and metal waste. A granular material produced by crushing slag after melting at least one of the above is fixed in a porous elastic body.

  According to the invention of the sponge-like blast material according to claim 1, instead of expensive grinding materials such as steel grid, alumina, starlight, urea resin and the like that have been conventionally used, rubble, rubber waste, glass waste, waste Granules produced by crushing slag after melting at least one of plastics, mineral resources, dust, concrete scraps, burning husks, and industrial wastes of metal wastes are used.

  As a result, a blasting material that is difficult to scatter can be manufactured at a low cost, so that the construction cost of the blasting work can be greatly reduced and the industrial waste can be reused. Moreover, the sponge-like blast material of the present invention can obtain the same blasting effect as compared with the conventional expensive abrasive.

  In order to achieve the above object, the sponge-like blast material according to claim 2 is a product obtained by crushing molten slag of metal oxide obtained when refining metal from metal ore. It is characterized by being fixed in a porous elastic body.

  According to the invention of the sponge-like blast material according to claim 2, as in the case of claim 1, since it is possible to manufacture a blast material that is difficult to scatter at low cost, it is possible to greatly reduce the construction cost of blasting work, It can also contribute to the reuse of industrial waste. Moreover, the sponge-like blast material of the present invention can obtain the same blasting effect as compared with the conventional expensive abrasive.

  In order to achieve the above-mentioned object, the invention for the apparatus for producing a sponge-like blast material according to claim 3 comprises a dispersing device that uniformly disperses the granular material in the foamed resin raw material liquid, and a foaming reaction of the dispersion. In a sponge blast material manufacturing apparatus comprising a foaming device for forming a foamed molding block and a crushing device for crushing the foamed molding block to a predetermined size, the foaming device is openable and closable to which the dispersion liquid is charged. A cylindrical container having a cover plate and a bottom plate for discharging a foamed molding block formed by a foaming reaction, a plurality of temperature sensors for measuring the temperature distribution of the dispersion that undergoes a foaming reaction in the container, and the dispersion A plurality of cooling / heating means for cooling or heating; a temperature control means for controlling the cooling / heating means so as to eliminate the temperature distribution of the dispersion liquid based on the measurement result of the temperature sensor; A negative pressure means that a negative pressure, characterized by comprising a detecting means for detecting the completion of the foaming reaction.

  The invention of the apparatus for producing a sponge-like blast material according to claim 3 is characterized by a foaming device for causing a foaming reaction of a dispersion obtained by uniformly dispersing a granular material in a foamed resin raw material liquid.

  That is, the foaming apparatus performs the foaming reaction in a state where the dispersion liquid is put into the container and the lid plate and the bottom plate are closed. In such a foaming reaction, the temperature control means controls the cooling / heating means so as to eliminate the temperature distribution of the dispersion based on a plurality of temperature sensors for measuring the temperature of the dispersion. Thereby, the temperature of the whole dispersion during foaming reaction can be made uniform.

  In addition, since the foaming device is equipped with a negative pressure means for creating a negative pressure inside the container during the foaming reaction, excess gas that is generated by the foaming reaction and does not contribute to the molding of the foam molding block can be smoothly removed from the container. Can be exhausted. Thereby, the internal pressure in the container during the foaming reaction can be maintained at a constant negative pressure.

  Further, since the foaming apparatus is equipped with a detecting means for detecting the end of the foaming reaction, the foaming block is not yet expanded before the foaming reaction is completed, that is, before the volume of the foaming block is not expanded due to foaming. It can prevent discharging from the container. Thereby, it is possible to always form a foam molded block having a certain size.

  In this way, the temperature of the entire dispersion during the foaming reaction is made uniform, and the inside of the container is maintained at a constant negative pressure, so that the foaming reaction rate in the entire dispersion can be made uniform and the foaming reaction can be performed. By completing in the container, it is possible to always form a foam molded block of a certain size. As a result, there is no variation in the density and distribution of the granules in the molded foam molding block, so it is contained in the sponge blast material obtained by crushing the molded foam molding block to a predetermined size with a crushing device. The density of the granular material can be made constant.

  According to a fourth aspect of the present invention, in the third aspect of the present invention, the pressing means for compressing the side surface of the foam molding block by compressing the side surface of the foam molding block, and adding the foam molding block from the lid plate side to the bottom plate side. Pressurizing means for extruding and extruding the block from the container.

  According to claim 4, when the foam molded block formed by opening the bottom plate of the container is discharged from the container, the side surface of the foam molded block is pressed by pressurizing the side surface of the foam molded block with the pressing means for compression. Since compression is performed, a gap is formed between the inner surface of the container and the foam molding block. In this state, if the foam molding block is pressed and extruded from the lid plate side to the bottom plate side of the container by the pressing means for extrusion, the foam molding block can be smoothly discharged without being damaged.

  In order to achieve the above object, the invention of the method for producing a sponge-like blast material according to claim 5 comprises a dispersion obtained by uniformly dispersing the granular material according to claim 1 or 2 in the foamed resin raw material liquid. A dispersion treatment step to be formed, and the dispersion-treated dispersion liquid is charged into a foaming apparatus having a cylindrical container whose lid and bottom plates can be opened and closed to foam the entire dispersion liquid at a uniform foaming reaction rate. A foaming process step for molding the foamed molding block in which the granular material is dispersed to a predetermined size, a discharging step for discharging the foamed molding block from the container of the foaming device, and the discharged foamed molding block to a predetermined size. And a crushing step of crushing.

  According to the invention of the method for producing a sponge-like blast material according to claim 5, the granular material according to claim 1 or 2 is uniformly dispersed in the foamed resin raw material liquid in the dispersion treatment step. Next, in the foaming treatment step, the dispersion-dispersed dispersion is foamed in a container at a uniform foaming reaction rate, and a foamed molding block in which the particulates are dispersed is formed with a certain size. Thereby, it is possible to prevent variation in the density and distribution of the granular material in the molded foamed block. And if the foaming molding block shape | molded in the discharge process is discharged | emitted from a container and it crushes to predetermined size at a crushing process, the density of the granular material contained in the manufactured sponge-like blast material can be made constant. .

  A sixth aspect of the present invention according to the fifth aspect is characterized in that the foamed resin raw material liquid is a polyisocyanate and a polyol for producing a foamed urethane resin.

  A sixth aspect of the present invention shows a preferable type of foamed resin for constituting the sponge portion of the sponge-like blast material, and a foamed urethane resin is preferable.

  Claim 7 is the temperature control step according to claim 5 or 6, wherein the foaming treatment step controls the temperature of the dispersion so that the foaming temperature distribution of the dispersion disappears during the foaming reaction of the dispersion. The method includes a negative pressure step of making the inside of the container during the foaming reaction negative pressure, and a detection step of detecting the completion of the foaming reaction.

  Claim 7 defines a temperature control step and a negative pressure step as specific steps for equalizing the foaming reaction rate of the entire dispersion, and is a specific step for forming a foam molding block of a certain size. A detection process is defined as a process.

  Claim 8 is the compression method according to any one of claims 5 to 7, wherein in the discharging step, the side surface of the foam molding block is compressed by pressurizing the side surface of the foam molding block formed in the container of the foaming apparatus. And a step of extruding the block from the container by pressurizing the foam-molded block from the cover plate side to the bottom plate side of the container.

  According to claim 8, when the foam molded block formed by opening the bottom plate of the container is discharged from the container, the side surface of the foam molded block is compressed by pressing the side surface of the foam molded block in the compression step. A gap is formed between the inner surface of the foam block and the foam molding block, and the foam molding block is pressed and extruded from the lid plate side to the bottom plate side of the container in the extrusion process, so that the foam molding block is not damaged. It can be smoothly discharged from the container.

  A ninth aspect is characterized in that, in the fifth aspect, the foaming apparatus according to claim 3 or 4 is used as the foaming apparatus.

  Since the foaming apparatus according to claim 3 or 4 is used as the foaming apparatus for performing the foaming process and the discharging process, the granular material contained in the produced sponge-like blast material The density of the body can be made constant.

  According to the sponge-like blasting material, the manufacturing method and the manufacturing apparatus according to the present invention, the blasting material which is difficult to scatter can be manufactured at low cost, so that the construction cost of the blasting work can be greatly reduced and the industrial waste can be reused. Can also contribute.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a sponge blast material according to the present invention, a manufacturing method thereof, and a manufacturing apparatus will be described below in detail with reference to the accompanying drawings. In addition, about the manufacturing apparatus of sponge blast material, it demonstrates together in describing each process of a manufacturing method.

  As shown in FIG. 1, the method for producing a sponge-like blast material according to the embodiment mainly includes a dispersion treatment step 10, a foam treatment step 12, a discharge step 14, and a crushing treatment step 16. In the present embodiment, the foamed resin constituting the sponge portion of the sponge-like blast material will be described as an example of the foamed urethane resin, but is not limited to the foamed urethane resin.

  In the dispersion processing step 10, the slag is produced by crushing at least one of industrial waste such as rubble, rubber waste, glass waste, plastic waste, mineral resources, dust, concrete waste, burning husk and metal waste. Dispersion obtained by crushing molten slag of metal oxide obtained when refining metal from metal ore or metal ore, and uniformly dispersing in the foamed resin raw material liquid by dispersion treatment means Form a liquid. Hereinafter, the granular materials are collectively referred to as “slag media A”. The “slag media A” includes copper slag obtained by granulating slag during copper refining.

  As the dispersion processing means 18, for example, a stirring device, a jet mill dispersion device that collides liquid at high pressure, an ultrasonic dispersion device, a homomixer, or the like can be used. In this embodiment, the dispersion processing means 18 An example of the stirring device 20 shown in FIG. 2 will be described as an example.

  The stirring device 20 shown in FIG. 2 is mainly composed of a stirring vessel 22 and a stirring blade 26 fixed to the lower end of the rotating shaft 24, and the rotating shaft 24 is connected to a rotating shaft of a motor (not shown). In addition, the agitating blade 26 is configured to move up and down in the agitating container 22 by mounting a motor in, for example, a lifting device. And in order to form the dispersion liquid B with the stirring apparatus 20, in the stirring container 22, the polyisocyanate and polyol which are the foaming resin raw material liquid C of a foaming urethane resin, and the slag media A are stirred with the stirring blade 26, Slag media A is uniformly dispersed in the foamed resin raw material liquid C. In this case, when the foamed resin raw material liquid C is deep, it is preferable to stir while moving the stirring blade 26 up and down.

  The stirring time is preferably set long in order to uniformly disperse the slag media A in the foamed resin raw material liquid C. However, if the stirring time is set too long, the foaming reaction is started in the stirring device 20. Therefore, it is necessary to select appropriately from the balance between uniform dispersion and foaming start time. Therefore, it is also possible to supply the stirring container 22 with the slag media A dispersed in the polyol in advance and stir while adding a predetermined amount of polyisocyanate as a dispersant.

  The mass ratio of the polyisocyanate and the polyol for producing the sponge blast material can be appropriately selected.

  Further, the ratio of the foamed resin raw material liquid C to the slag media A can be appropriately selected, but the slag media A is preferably in the range of 1 to 2 masses relative to 1 mass of the foamed resin raw material liquid C, and particularly 1 It is preferable to mix at a ratio of 0.5 mass. As the ratio of the slag media A is increased, the harder spongy blast material D can be produced. Therefore, the ratio of the slag media A to be mixed can be changed according to the type of blasting work.

  As the kind of polyol, polyether polyol, polyester polyol, polycarbonate polyol, polycaprolactone polyol and the like can be suitably used.

  The dispersion B in which the slag media A is uniformly dispersed in the foamed resin raw material liquid C in the dispersion treatment step 10 is then subjected to a foaming reaction in the foaming treatment step 12 to form a foamed molding block E, and then in the discharge step 14. It is discharged from the container of the foaming device.

  FIG. 3 shows a foaming apparatus 28 suitable for carrying out the foaming process 12 and the discharging process 14.

  The foaming device 28 includes a container 30 that mainly performs a foaming reaction of the dispersion B, a plurality of cooling / heating means 34, a temperature sensor 32 that is provided integrally with a sensor-use cooling / heating rod 66 among the plurality of cooling / heating means 34, The negative pressure means 36 for making the inside of the foaming container 30 negative, the detection means 38 for detecting the end of the foaming reaction, the pressurizing means 40 for compression, the pressurizing means 42 for extrusion, and the control for controlling these means. Part 44.

  The container 30 is formed in a cylindrical shape whose upper and lower ends are opened, and a lid plate 48 rotatably supported on a hinge 46 is provided on the upper surface of the container 30, and the hinge 50 is rotated on the lower surface of the container 30. A freely supported bottom plate 52 is provided. The rotation shafts of the motors 54 and 56 are connected to the hinges 46 and 50 of the cover plate 48 and the bottom plate 52, respectively, and the motors 54 and 56 are driven to open and close by the control unit 44. A packing member (not shown) is provided on the inner side surface of the lid plate 48 and the inner side surface of the bottom plate 52 so that the container 30 can be sealed when closed. The size of the container 30 is preferably in the range of 500 to 700 mm in height and in the range of 300 to 500 mm in diameter, and the cylindrical shape is preferably cylindrical or rectangular. Further, an inner lid 58 is detachably fitted to the upper portion of the container 30 in order to increase the sealing degree of the container 30.

  The plurality of cooling / heating means 34 includes a first cooling / heating water coil 62 spirally incorporated in the cylindrical side wall 60 of the container 30 along the cylindrical wall, and a second cooling / heating water coil incorporated in the bottom plate 52. 64 and a plurality of sensor-use cold / hot rods 66 suspended from the inner surface of the inner lid 58 described above.

  The 1st and 2nd cold / hot water coils 62 and 64 are connected to the cold / hot water manufacturing apparatus which is not shown in figure through the pumps 68 and 70, respectively. Thereby, the cold / hot water adjusted to predetermined temperature is circulated between the 1st and 2nd cold / hot water coils 62 and 64 and the cold / hot water manufacturing apparatus.

  On the other hand, as shown in FIG. 4, a spiral cold / hot water coil 72 is built in the sensor-use cold / warm rod 66, and the cold / hot water coil 72 is connected to a cold / hot water production apparatus (not shown) via each pump 73. Is done. Thereby, the cold / hot water adjusted to predetermined temperature is circulated between the cold / hot water coil 72 and the cold / hot water production apparatus. A plurality of temperature sensors 32 are provided at regular intervals in the longitudinal direction of the outer wall surface of the sensor / cooling rod 66, and the temperature of the dispersion C during the foaming reaction is measured. In this case, heat conduction between the cold / hot water coil 72 and the temperature sensor 32 is blocked by a heat insulating member (not shown) so that the temperature sensor 32 does not detect the temperature of the cold / hot water coil 72. In FIG. 4, an example in which one spiral cold / hot water coil 72 is built in the sensor-use cold / warm rod 66 is shown. In order to control the temperature corresponding to the plurality of temperature sensors 32, The hot / cold water coils 72 are independently provided in the longitudinal direction of the rod 66 by the number of the temperature sensors 32, and the temperature of the cold / hot water flowing through the cold / hot water coils 72 can be individually controlled.

  The temperature of the dispersion measured by the temperature sensor 32 is output to the control unit 44. In FIG. 3, one temperature sensor 32 and the controller 44 are connected by a two-dot chain signal line, but the measured temperatures of all the temperature sensors 32 of the sensor combined cold / warm bar 66 are output to the controller 44. .

  Further, as shown in FIG. 5, a total of five sensors / cooling / heating rods 66 are arranged at the center position of the container 30 and at the ten o'clock position between the center section and the container wall surface. Thus, the temperature at the center of the dispersion C during the foaming reaction, the temperature near the wall surface of the container 30, and the temperature in the vertical direction of the container 30 are input to the control unit 44. The control unit 44 calculates the temperature distribution of the entire dispersion C based on the temperatures from these temperature sensors 32, and the first cold / hot water coil 62 and the bottom plate of the container side wall 60 so that the temperature distribution does not differ as much as possible. The temperature of the cold / hot water flowing through the second cold / hot water coil 64 of 52 and the cold / hot water coil 72 of the sensor / cooling rod 66 is controlled.

  In the embodiment, the example of the five sensor / cooling rods 66 is shown, but it is not limited to the number and the arrangement position. In short, the presence or absence of the temperature distribution of the entire dispersion C during the foaming reaction, and What is necessary is just to arrange | position to the number and position which can monitor the magnitude | size of temperature distribution.

  As shown in FIG. 3, the negative pressure means 36 has a suction pipe 76 connected to a suction hole 74 formed through the side wall 60 at the upper part of the container 30, and the suction pipe 76 is not shown in the drawing via an open / close valve 78. Connected to the pump. The opening / closing operation of the opening / closing valve 78 and the adjustment of the opening amount are controlled by the control unit 44. Thereby, when the dispersion liquid C foams in the container 30, the inside of the container 30 can be maintained at a constant negative pressure.

The detection means 38 is mounted on the inner lid 58 and measures the distance from the glass window 80 formed in the inner lid 58 to the upper surface of the molded foam block E without contact. The measured distance H is output to the control unit 44. The control unit 44 determines that the foaming reaction has been completed when the distance H in the unit time ΔT is equal to or less than a certain value. That is, as shown in FIG. 6, when the elapsed time t from the start of the foaming reaction is taken on the horizontal axis and the height H of the foamed molding block is taken on the vertical axis, the slope of the curve L is almost eliminated and becomes horizontal. The height H ₀ of the foam molding block E at the time is detected, and it is determined that the foaming reaction has been completed. As the detection means, for example, a laser rangefinder can be used.

  As described above, the cooling device 34 is provided with the cooling / heating means 34, the negative pressure means 36, and the detection means 38, and the temperature of the entire dispersion C during the foaming reaction is made uniform, and the inside of the container 30 is kept at a constant negative pressure. By maintaining it, the foaming reaction rate in the entire dispersion C can be made uniform. Further, by completing the foaming reaction in the container 30, it is possible to always form a foam molding block E having a certain size. Thereby, as shown to FIG. 7 (A), it can avoid that the density and density distribution of the slag media A in the shape | molded foaming molding block E generate | occur | produce. Therefore, the density of the slag media A contained in the sponge blast material D obtained by crushing the molded foam molding block E into a predetermined size in the crushing process step 16 can be made constant. FIG. 7A is a cross-sectional view of the molded foam molding block E cut in the vertical direction.

  FIG. 7B shows the foamed molding block E molded without the cooling / heating means 34, the negative pressure means 36, and the detection means 38 described above. In this case, the center of the dispersion C subjected to foaming reaction is shown. The temperature of the part becomes higher than the temperature of the outer part, and the slag media A is unevenly distributed in the outer part of the molded foam molding block E, so that the density of the central part becomes smaller than that of the outer part. Therefore, when the foamed molding block E is crushed in the crushing process step 16 described below, sponge blast materials D having different slag media A densities are formed, which is preferable.

  Next, referring to FIG. 3, the compression pressurizing means 40 and the extrusion pressurizing means 42 for easily discharging the foamed molding block E molded in the container 30 will be described.

  In the compression pressurizing means 40, a pressurization branch pipe 84 is connected to each of a plurality of pressurization holes 82 formed through the side wall 60 of the container 30, and each pressurization branch pipe 84 is a single main pipe. 86 is connected to a first pressurized air pump 88. The ON / OFF operation of the first pressurized air pump 88 and the magnitude of pressurization are controlled by the control unit 44.

  The extruding pressurizing means 42 is configured by connecting a second pressurized air pump 94 via an air supply pipe 92 to an air supply hole 90 formed through the side wall 60 at the top of the container 30. The air supply hole 90 is formed at a position in the head space 96 between the inner lid 58 and the size (the one-dot chain line in FIG. 3) when the foaming reaction of the foamed molding block E generated in the container 30 is completed. Designed to supply pressurized air. The controller 44 controls the ON / OFF operation of the second pressurized air pump 94 and the magnitude of pressurization of the head space 96.

  And in order to discharge | emit the foaming molding block E shape | molded in the container 30 from the container 30, it carries out as follows.

  First, the lid 48 is opened and the inner lid 58 is lifted to remove the sensor / cooling rod 66 from the foamed resin raw material liquid E. Thereafter, the lid plate 48 is closed again. Next, the side surface of the foamed molding block E generated in the container 30 is compressed by the pressing means 40 for compression. Thereby, the foam molding block E can be easily peeled from the inner wall surface of the container 30, and the block thickness of the foam molding block E can be slightly reduced in diameter. In this state, the bottom plate 52 of the foaming device 28 is opened, and the head space 96 in the container 30 is pressurized by the pressing means 42 for extrusion. As a result, the foamed molding block E in the container 30 is pressurized from the lid plate 48 side to the bottom plate 52 side, and therefore easily discharged from the bottom plate 52 side of the container 30.

  The foamed molding block E molded in the foaming process 12 and discharged from the container 30 in the discharge process 14 is crushed to a predetermined size in the next crushing process 16 and becomes a sponge blast material.

  FIG. 8 is an explanatory diagram of a crushing apparatus 98 suitable for carrying out the crushing process 16.

  The crushing device 98 is disposed below the foaming device 28 described above. The crushing device 98 is provided with a mesh blade (mesh blade) 102 that is curved downward in the horizontal direction at a substantially central portion in the crushing container 100 whose upper surface is open, and a plurality of openings 104 are formed in the mesh blade 102. Is done. Further, a rotary blade 106 is disposed immediately above the mesh blade 102, and a number of protruding blades 108 formed on the surface of the rotary blade 106 are slidably positioned on the mesh blade 102. Further, a trumpet-shaped hopper 110 is provided on the opened upper surface of the crushing container 100, and the foamed molding block E discharged from the bottom plate 52 of the foaming device 28 falls into the hopper 110 and enters the crushing container 100. be introduced. The foamed molding block E introduced into the crushing container 100 is finely crushed by the rotating rotary blade 106 and the mesh blade 102, and the sponge blast material D, which is a crushed material, passes through the opening 104 of the mesh blade 102 to the crushing container 100. Fall to the bottom.

  Since the sponge-like blast material manufactured in this way is difficult to scatter and can be manufactured at low cost, it is possible to prevent the dust from being scattered during the blasting operation and to greatly reduce the blasting cost. It can also contribute to the reuse of industrial waste.

Process drawing explaining the production direction of the sponge blast material of the present invention The conceptual diagram of the stirring apparatus in the manufacturing apparatus of the sponge blast material of this invention The conceptual diagram of the foaming apparatus in the manufacturing apparatus of the sponge blast material of this invention Conceptual diagram of the sensor-use cold / hot rod provided in the foaming device Arrangement diagram showing an example of arrangement of sensor / cooling rods arranged in the container of the foaming device Explanatory diagram for knowing the completion time of foaming reaction by detecting means of foaming device Explanatory drawing explaining the difference in the density state of the granular material of the foaming molding block when not using it when using the foaming apparatus in this invention The conceptual diagram of the crushing apparatus in the manufacturing apparatus of the sponge blast material of this invention

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Dispersion treatment process, 12 ... Foaming treatment process, 14 ... Discharge process, 16 ... Crushing treatment process, 18 ... Dispersion treatment means, 20 ... Stirring device, 22 ... Stirring vessel, 24 ... Rotating shaft, 26 ... Stirring blade, 28 DESCRIPTION OF SYMBOLS ... Foaming device, 30 ... Container, 32 ... Temperature sensor, 34 ... Cooling / heating means, 36 ... Negative pressure means, 38 ... Detection means, 40 ... Pressurizing means for compression, 42 ... Pressurizing means for extrusion, 44 ... Control part, 46 ... hinge, 48 ... lid plate, 50 ... hinge, 52 ... bottom plate, 54, 56 ... motor, 58 ... inner lid, 60 ... side wall of container, 62 ... first cold / hot water coil, 64 ... second cold / hot water Coil, 66 ... Cool and hot rod for sensor, 68, 70 ... Pump, 72 ... Cooled / hot water coil, 73 ... Pump, 74 ... Suction hole, 76 ... Suction piping, 78 ... Open / close valve, 80 ... Glass window, 82 ... Pressure hole 84 ... Branch for pressurization, 86 ... Main pipe, 88 ... First Air pump for pressure, 90 ... air supply hole, 92 ... air supply pipe, 94 ... second pressurized air pump, 96 ... head space, 98 ... crushing device, 100 ... crushing container, 102 ... mesh blade, 104 ... hole, 106 ... Rotary blade, 108 ... protrusion, A ... slag media (granular body), B ... dispersion liquid, C ... foamed resin raw material liquid, D ... sponge blast material, E ... foam molding block

Claims (9)

  Porous particles produced by crushing slag after melting at least one of industrial waste such as rubble, rubber waste, glass waste, plastic waste, mineral resources, dust, concrete waste, burning husk, and metal waste A sponge-like blasting material characterized by being fixed in a material elastic body.   A sponge-like blasting material comprising a granular material produced by crushing a molten slag of a metal oxide obtained when refining a metal from a metal ore and fixed in a porous elastic body. A dispersion device for uniformly dispersing the granular material in the foamed resin raw material liquid, a foaming device for foaming reaction of the dispersion to form a foamed molding block, and a crushing device for crushing the foamed molding block to a predetermined size are provided. In an apparatus for producing spongy blast material,
The foaming device is
A cylindrical container having an openable / closable lid plate into which the dispersion is charged and a bottom plate for discharging a foam molding block formed by a foaming reaction;
A plurality of temperature sensors for measuring the temperature distribution of the dispersion that undergoes a foaming reaction in the container;
A plurality of cooling and cooling means for cooling or heating the dispersion;
Temperature control means for controlling the cooling means so that the temperature distribution of the dispersion disappears based on the measurement result of the temperature sensor;
Negative pressure means for making the inside of the container negative pressure;
An apparatus for producing a sponge-like blast material, comprising: detecting means for detecting the end of the foaming reaction. A pressurizing means for compressing the side surface of the foam-molded block by compressing the side surface of the foam-molded block;
4. An apparatus for producing a sponge-like blast material according to claim 3, further comprising: an extruding pressurizing unit that pressurizes the foam-molded block from the lid plate side to the bottom plate side and pushes the block out of the container. A dispersion treatment step of forming a dispersion in which the granular material according to claim 1 or 2 is uniformly dispersed in the foamed resin raw material liquid;
The dispersed dispersion is put into a foaming device having a cylindrical container whose lid and bottom plates can be opened and closed, and the entire dispersion is foamed at a uniform foaming reaction rate. A foaming process for forming a molding block with a certain size;
A discharging step of discharging the foamed molding block from the container of the foaming device;
And a crushing step of crushing the discharged foamed molding block into a predetermined size.   6. The method for producing a sponge-like blast material according to claim 5, wherein the foamed resin raw material liquid is a polyisocyanate and a polyol for producing a foamed urethane resin. In the foaming process,
A temperature control step of controlling the temperature of the dispersion so that the foaming temperature distribution of the dispersion disappears during the foaming reaction of the dispersion;
A negative pressure step of making the inside of the container during the foaming reaction negative pressure;
A method for producing a sponge-like blast material according to claim 5 or 6, further comprising a detection step of detecting that the foaming reaction has been completed. In the discharging process,
A compression step of compressing the side surface of the foam molding block by pressurizing the side surface of the foam molding block formed in the container of the foaming device;
A sponge-like blast material according to any one of claims 5 to 7, further comprising an extruding step of pressing the foam-molded block from the cover plate side of the container to the bottom plate side to extrude the block from the container. Manufacturing method.   6. The method for producing a sponge-like blast material according to claim 5, wherein the foaming device according to claim 3 or 4 is used as the foaming device.

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