KR101078866B1 - manufacturing method for radiation shielding - Google Patents

Abstract

The present invention, such as a hospital using a radioactive device, by conveniently installing and using in the form of a panel on the inner and outer walls of the building where a lot of radiation is generated by suppressing the harmful substances such as lead to minimize the damage to the human body Yet, the present invention relates to a method for manufacturing a radiation shielding material which can suppress exposure of radiation wavelengths generated from radioactive devices to the outside.

Method for achieving the present invention, the raw material mixing step of mixing the powdered galena, fly ash, silica, magnesium oxide into a mixing container; The raw material mixture is mixed to a raw material mixture consisting of a powder-form galena, fly ash, silica, and magnesium oxide contained in a mixed container through the raw material mixing step, and the mixture is heated and heated at 40 to 50 ° C. in a solid state. It comprises a solidifying additive mixing step.

The present invention as described above, first, it is possible to conveniently form a radioactive shielding material that can shield the radiation even without a complex manufacturing process can reduce the overall operating cost by reducing the manufacturing cost and manpower consumption according to the complex manufacturing process.

Second, in the case of forming a radiation shielding material to shield the radioactivity, the radiation shielding material is formed through a simple process of forming a raw material mixture solidified only with minerals and bonding magnesium boards after excluding a raw material that has to perform a complicated post-treatment process such as lead. By forming, the efficiency of a manufacturing process can be improved.

Third, by forming a radioactive shielding material by conveniently processing powdered minerals, and then manufacturing it in the form of a panel to minimize radioactive shielding materials such as lead used in conventional radioactive shielding materials to form a radioactive shielding material. Risk factors that can occur during the process can be reduced, providing a safe and efficient work process.

Fourth, by appropriately changing the additives to enhance the hardness and fire resistance of the radiation shielding material can be conveniently applied according to the location or environment to be installed can be used to increase the user's convenience.

Lead, Galena, Radioactivity, Admixtures, Shielding Materials

Description

Manufacturing method for radiation shielding

The present invention relates to a method for manufacturing a radioactive shielding material, and more particularly, a simple process of bonding a magnesium board to the raw material mixture after forming a raw material mixture by mixing natural minerals such as lead without a complicated processing process such as lead. By forming a radioactive shield through the radiation shielding material manufacturing method that can be conveniently installed on the outer wall or inner wall of the place where the use of radioactive equipment, such as a hospital, a lot of radiation is prevented to the outside.

In general, the radiation shielding material is used when the radiation device must be used for the treatment of patients in a hospital where radio equipment is used a lot. In order to prevent it from being installed on the wall, through this, it is possible to suppress the radio wave from the radioactive device spread out.

Such a radiation shielding material is generally formed using lead and zinc capable of shielding the wavelength of radioactivity, and in general, a radioactive shield is formed by processing lead through a post-treatment process and then using lead formed therethrough. Is common.

As described above, in the case of forming the radioactive shielding material using the lead, it was easy to form the shape, there was an advantage that does not corrode well.

However, in order to form a radioactive shielding material using lead, it is necessary to process minerals such as leadstone through a complicated treatment process, and a problem that is expensive due to the problem of processing after mixing minerals such as coke, limestone and silicate minerals. There was.

In addition, there is a problem that the dust generated in the process of processing the lead, and the pollutants of lead in the process of cutting or bonding the processed lead may be harmful to the body of the worker absorbed.

In addition, the conventional lead-based radiation shielding material has a work process is cumbersome, the overall work efficiency can be reduced, and accordingly, there is a problem that the manufacturing cost is also increased.

The present invention has been made to solve the above problems, by providing a method for producing a radiation shielding material that can be conveniently mixed with minerals, such as galena, to achieve a safe and efficient radioactive shielding production without a complicated manufacturing process It provides a method of manufacturing a radioactive shielding material that can reduce the manpower and manufacturing cost to obtain an overall cost reduction effect.

In addition, another object of the present invention is to provide a safe and efficient radiation shielding manufacturing process by minimizing problems such as lead poisoning of workers that can occur in the conventional shielding manufacturing process, as well as to conveniently adjust the hardness and fire resistance It is to provide a method of manufacturing a radiation shielding material that can be conveniently installed and used in the place.

In order to achieve the above object, the present invention, the raw material mixing step of mixing the powdered galena, fly ash, silica, magnesium oxide into a mixing container; The raw material mixture is mixed to a raw material mixture consisting of a powder-form galena, fly ash, silica, and magnesium oxide contained in a mixed container through the raw material mixing step, and the mixture is heated and heated at 40 to 50 ° C. in a solid state. It comprises a; solidifying additive mixing step.

In addition, the present invention is a raw material mixing step of mixing the powdered galena, zeolite, silica, magnesium oxide into a mixing container; Solidifying the raw material mixture in a solid state through the process of mixing the additives to the raw material mixture consisting of powder-form galena, zeolite, silica, magnesium oxide contained in the mixed container through the raw material mixing step and applying a heat of 40 ~ 50 ℃. It may be made, including; additive mixture mixing step.

At this time, the raw material mixture forming step of forming a raw material mixture solidified in a solid state through the additive mixing step after the additive mixing step; And a magnesium board bonding step of forming a panel of a multilayer structure by bonding a magnesium board to a surface of the raw material mixture forming a panel form through the raw material mixture forming step.

In addition, in the additive mixing step, the gallstone, fly ash, silica, magnesium oxide, the mixed material is 40 to 50% by weight, 10 to 35% by weight fly ash, silica 5 to 25% by weight, based on 100% by weight of the mixture, Magnesium oxide may be mixed in a proportion of 5 to 15% by weight, and additives 5 to 10% by weight.

In addition, in the additive mixing step, the gallstone, zeolite, silica, magnesium oxide, the mixed material is 40 to 50% by weight, 10 to 35% by weight fly ash, 5 to 25% by weight of silica, oxidized to 100% by weight of the mixture Magnesium may be mixed at a ratio of 5 to 15% by weight, and additives 5 to 10% by weight.

In addition, in the additive mixing step, the additive may be mixed by adding any one selected from phosphate and graphite.

In addition, the galena (Galena) is preferably used to use a galena (Galena) powder having a purity of 60 to 70%, the raw material mixture formed through the raw material mixture forming step is formed to form a thickness within 10 ~ 12mm, The magnesium board to be bonded to the raw material mixture through the magnesium board bonding step is preferably bonded to the raw material mixture using a thickness of less than 6 ~ 10mm.

The present invention as described above can obtain the following effects.

First, it is possible to conveniently form a radiation shielding material that can shield the radiation even without a complex manufacturing process can reduce the overall operating cost by reducing the manufacturing cost and manpower consumption according to the complex manufacturing process.

Second, in the case of forming a radiation shielding material to shield the radioactivity, the radiation shielding material is formed through a simple process of forming a raw material mixture solidified only with minerals and bonding magnesium boards after excluding a raw material that has to perform a complicated post-treatment process such as lead. By forming, the efficiency of a manufacturing process can be improved.

Third, by forming a radioactive shielding material by conveniently processing powdered minerals, and then manufacturing it in the form of a panel to minimize radioactive shielding materials such as lead used in conventional radioactive shielding materials to form a radioactive shielding material. Risk factors that can occur during the process can be reduced, providing a safe and efficient work process.

Fourth, by appropriately changing the additives to enhance the hardness and fire resistance of the radiation shielding material can be conveniently applied according to the location or environment to be installed can be used to increase the user's convenience.

Specific features and other advantages of the present invention will become more apparent from the following drawings and description of the preferred embodiments.

Prior to describing the present invention, the inventors of the present invention suppress the risk that may cause harm to the human body of the worker when performing the manufacturing process to form the radiation shielding material, and conveniently without the need for complicated manufacturing process radiation shielding material In order to be able to manufacture the radiation shielding material manufacturing method of the present invention is to be proposed.

The present invention, as shown in Figure 1, the raw material mixing step (100) of mixing the powdered galena, fly ash, silica, magnesium oxide into a mixing container; The raw material mixture through the process of mixing the additives to the raw material mixture consisting of the powder-form galena, fly ash, silica, magnesium oxide contained in the mixing container through the raw material mixing step 100 and applying a heat of 40 ~ 50 ℃ It comprises an additive mixing step 200 to solidify to a solid state.

In addition, the present invention is a raw material mixing step (100) of mixing the powdered galena, zeolite, silica, magnesium oxide into a mixing container; The raw material mixture through the process of mixing the additives to the raw material mixture consisting of powdered gelatin, zeolite, silica, magnesium oxide contained in the mixing container through the raw material mixing step 100 and applying a heat of 40 ~ 50 ℃ It comprises a; additive mixture mixing step of solidifying to a solid state (200).

In addition, the present invention is a raw material mixture forming step of forming a raw material mixture solidified in a solid state through the additive mixture step 200 after the additive mixture step 200 after the above-described process in a panel shape; And a magnesium board bonding step 400 formed to form a panel having a multilayer structure by bonding magnesium board to the surface of the raw material mixture forming the panel form through the raw material mixture forming step 300. .

1) Raw material mixing step (100)

The above step is to mix and put the powdered gelatin, fly ash, silica, magnesium oxide in a mixing vessel, or to put the zeolite replacing the above-mentioned fly ash in a mixing vessel.

Galena is an ore containing a large amount of lead for forming a radioactive shielding material, which contains 60% or more of lead.

That is, in the related art, the lead is processed through a complex treatment process, and lead is used for a radioactive shielding material through a process of mixing with coke, limestone, silicate minerals, and the like.

As described above, the lead-free stone is an ore containing a large amount of lead (Pb) and zinc (Zn), and in particular, the lead (Pb) and zinc (Zn) act to shield the wavelength of radioactivity to form a radiation shielding material. If it is the most important thing.

At this time, in the present invention, even when mixed with various ore powders or additives in the raw material mixing step 100 and the additive mixing step 200 to be described later using those formed to form a powder form to achieve a convenient work process It is.

In addition, it is preferable to use the lead of the content of lead (Pb) is 60 ~ 70% or more, which is a natural effect of shielding the wavelength of radiation when using the content of lead contained in the lead less than 60% It can be difficult to achieve, and because the lead content of the lead content of more than 70% can increase the overall manufacturing cost due to the high cost, the lead content of the lead is reduced to 60 to 70 wt% However, it is most desirable to be able to achieve the effect of radioactive wavelength shielding such as conventional lead.

The fly ash refers to the ash (coal ash) collected by a dust collector from the flue gas of a boiler that burns pulverized coal. It is to perform the raw material mixing step 100 using a fly ash of the form.

The fly ash is to be mixed for use as a miscible material is to improve the workability (workability), the heat of curing is alleviated, and the long-term strength and water tightness (water) property can be achieved. In particular, as described above, after mixing the fly ash with the admixture will be able to achieve a more convenient raw material mixture forming step 300 to be described later.

Silica is also referred to as silicic anhydride and refers to silicic acid dioxide as a component in various silicates that exist naturally.

Such silica can increase the fire resistance when used as a mixed material, and in the present invention, the melting point of lead used as a conventional radioactive shielding material is low (about 320 ° C.). In order to overcome the problem of weakening is to be added to increase the fire resistance of the radioactive shielding material produced through the present invention.

In addition, the fly ash and silica can reduce the manufacturing process ratio for forming a radiation shielding material at a low cost.

The magnesium oxide (MgO) is added to increase the fire resistance of the radiation shielding material formed through the present invention, it is to use magnesium oxide in the form of a powder.

In addition, the magnesium oxide may also play a role of a catalyst or an adsorbent so that minerals in various powder forms mixed through the raw material mixing step 100 may be smoothly mixed.

In addition, the present invention is the raw material mixing step (100) through the process of mixing the addition of zeolite (Zeolite) in the form of powder form in the state except for the fly ash (FLy ash) to form a powdery form, zeolite, silica, magnesium oxide in a mixing container You can also do

At this time, the zeolite exhibits the same effect as the above-described fly ash, which increases the overall efficiency of the manufacturing process by allowing the user to select and apply minerals that are easy to select or supply. It is applied to reduce the cost.

As such, the raw material mixing step 100 is to mix evenly mixed in a state in the form of a powder, such as galena, fly ash, silica, magnesium oxide or galena, zeolite, silica, magnesium oxide in a mixed container.

In addition, the raw material mixing step 100 may be artificially made according to the user's selection, but it is most preferable to increase the inherent effect of the radiation shielding material to shield the radiation wavelength by performing through an automated process using a machine.

Particularly, in the raw material mixing step 100, except for the garnet, it is selected from a barium group, a cerium group, and a bismuth group to achieve 40 to 50% by weight relative to the total 100% by weight of the mixture. Either one can be selected and mixed in place of the galena.

This is to shield the radiation wavelengths using the heavy specific gravity of the barium group, cerium group, and bismuth group as described above. As described above, the barium group, Like the cerium group and the bismuth group, barium may be used as the barium, but various forms such as barium oxide and barium sulfate may be used. Since it is present as described above, barium (barium) group, cerium (Cerium) group, bismuth (Bismuth) group by selecting any one of the minerals of the present invention may be mixed to replace.

In addition, it is to increase the overall efficiency of the manufacturing process, and to reduce the manufacturing cost by allowing the user to select and apply minerals that can be easily supplied.

2) Additive mixing step (200)

The step is 40 ~ 50 by mixing the additives in the raw material mixture consisting of the powdered galena, fly ash, silica, magnesium oxide or galena, zeolite, silica, magnesium oxide in the mixed container through the raw material mixing step 100 described above The raw material mixture is solidified in a solid state by mixing with heating at ℃.

Prior to explaining the additive mixing step 200 of the present invention, the fly ash and zeolite are to achieve the same effect while reducing the manufacturing cost will be described below in parallel with the fly ash and zeolite.

That is, in the step, through the process of stirring the mixture well while adding heat of 40 ~ 50 ℃ by further mixing the additive to the powder mixture of the raw material selected and mixed in the above-described raw material mixing step 200 It is to make the raw material mixture firm.

At this time, in the above step, the galena, fly ash (zeolite), silica, magnesium oxide, the mixture is 40 to 50% by weight, 100 to 35% by weight fly ash (stone), silica 5 with respect to the total 100% by weight of the mixture It mixes at the ratio of -25 weight%, magnesium oxide 5-15 weight%, and the additive material 5-10 weight%.

As the most important mineral for shielding the radio wave wavelengths, the fumestone may have a lower shielding performance when added below 40% by weight relative to the total 100% by weight of the mixture. The manufacturing cost for forming is not only increased more than necessary, but also in the form of a tile attached to a wall to be installed on a wall of a building. As can be generated, as described above, to mix 40 to 50% by weight relative to the total 100% by weight of the mixture.

In addition, the fly ash (zeolite) is a mixture of 10 to 35% by weight with respect to the total 100% by weight of the mixture, as described above, it is possible to obtain the natural effect of the admixture without lowering the radioactive shielding performance of the garnet will be.

In this case, in particular, the fly ash may be applied by changing the amount added according to the purity of the galena because the content of lead (Pb) may vary according to the production year of the mineral because the galena is a natural mineral.

For example, the mixing ratio of the fly ash is 10 to 35% by weight relative to the total 100% by weight is applied on the basis of the case where the lead oil content of the galena comprises 60%.

Accordingly, as mentioned above, the mixing ratio of the fly ash is appropriately changed according to the lead (Pb) content of the lead in the range of 10 to 35% by weight based on the total 100% by weight of the manufacturing process It is possible to obtain the natural shielding performance of the radioactive shielding material using the smoke-resistant stone while reducing the cost.

In addition, the silica is added and mixed to form 5 to 25% by weight relative to the total 100% by weight of the mixture, and the magnesium oxide is mixed to form 5 to 15% by weight relative to the total 100% by weight of the mixture of the gallstone Without sacrificing the inherent effect of the radioactive shielding through the mixing process of the mixture, as well as to ensure the fire resistance of the prepared radioactive shielding material.

By the way, the silica and magnesium oxide is also preferably applied by changing the mixing ratio as appropriate according to the lead (Pb) content of the lead.

In particular, since the above-mentioned gas is contained in a small amount of the above-mentioned fly ash, silica, magnesium oxide, etc., the amount of fly ash, silica, and magnesium oxide contained in the garnet is accurately measured to control the ratio of minerals and additives. It is most preferable to mix by mixing.

The additives are added to allow the above-mentioned gypsum, fly ash (silicon), silica, and magnesium oxide to coagulate and solidify in a mixed state.

In addition, the additive may be selected by the user any one selected from phosphate, graphite.

At this time, even if the phosphate is added to the outer wall of the building has the advantage of low cost, but the use of selecting the ammonium phosphate (NH₄KH ₂PO₄-Monoammonium Phosphate) that can smell a little cost It can be preferably applied in order to reduce the cost, and if it is intended to be installed on the inner wall of the building, it is a little more expensive than the ammonium phosphate (NH₄KH₂PO₄-Monoammonium Phosphate), but it does not smell using the potassium phosphate (KH₂PO₄-MonoPotassium Phosphate) By forming a radioactive shielding material, the additives may be appropriately selected and applied according to the location where the radioactive shielding material is to be installed, thereby reducing the overall manufacturing cost and safely using them.

In addition, the graphite may be added when it is advantageous in high temperature and requires fire resistance, and in particular, it may be applied when securing fire resistance to withstand high temperatures of 1000 ° C or higher.

As described above, in the case of forming a radioactive shielding material, the raw material mixture mixed through the raw material mixing step 100 and any one selected from the above-described ginseng salt and graphite may be added to reduce the overall manufacturing cost. In addition, the fire resistance of the radiation shielding material can also be secured.

And, after mixing the raw material mixture and the additive to add heat to achieve a temperature of 40 ~ 50 ℃ to stir to heat through a temperature that does not become 40 ℃ in the process of mixing the raw material mixture and the additive to solidify If there is a problem that the compressive strength of the raw material mixture passed through the additive mixing step 200 may fall, on the contrary, when heated through a temperature exceeding 50 ℃, the curing strength of the raw material mixture is high, the raw material mixture molding to be described later Since the problem that the step 300 and the magnesium board bonding step 400 is not easily made may occur, as described above, in the process of mixing and mixing the raw material mixture and the additive, the heating temperature thereof is 40 to 50 ° C. It is adjusted and applied.

In addition, the process of mixing the raw material mixture and the additives and then mixing and applying heat is preferably carried out until a solid state to be obtained through a mechanical device, and curing according to the environment, place to install the radiation shielding material It can be done by adjusting the intensity.

In the above, the above-described raw material mixing step 100 and additive mixing step 200 are sequentially performed, but this may be made individually as well as simultaneously according to the convenience of the user and the environment to be manufactured.

3) Raw material mixture molding step (300)

The step is to form the raw material mixture solidified in the solid state through the additive mixing step 200 in the form of a panel.

That is, in order to be conveniently installed on the outer wall or inner wall of the building, if you want to install and use in a place such as a hospital equipped with a lot of radioactive devices, magnesium board through the magnesium board bonding step 400 to be described later Is to be bonded to the raw material mixture smoothly solidified.

To this end, as shown in Figures 2a and 2b, the raw material mixture solidified in a solid state to form a rectangular plate shape.

At this time, the raw material mixture is formed to form a thickness within 10 ~ 12mm, as shown in FIG.

That is, in the conventional radioactive shielding material that is installed in a hospital, such as shielding the wavelength of radioactivity, when using lead, the thickness of the lead is generally formed to form a 2mm to use as a radioactive shielding material, the thickness of the above-mentioned 2mm This is because the thickness of the raw material mixture passed through the additive mixing step 200 described above should be within 10 to 12 mm in order to obtain the same effect as the radiation shielding material.

For example, the radiation shielding material using lead achieves the effect of blocking the radiation wavelength of 150 kev or less when the thickness of lead is 2 mm. Accordingly, the thickness of the radioactive shielding material manufactured through the raw material mixture molding step 300 should be formed to achieve a minimum of 10 mm to achieve the same effect as the radioactive wavelength blocking effect of 2 mm of lead.

In the above, the case of shielding the radiation energy of 150 kev through the 2mm lead or 10 ~ 12mm raw material mixture was described as an example, but not limited to the raw material mixture molding step 300 according to the amount of radioactive energy to be blocked Of course it can be used by properly adjusting the thickness of the raw material mixture.

As such, the radioactive shielding material of the present invention manufactured through the raw material mixture molding step 300 achieves the same effect as the conventional radioactive shielding material formed of lead having a thickness of 2 mm, and of course, can be used more safely. will be.

In addition, the above description is made to form the raw material mixture in the form of a panel, but is not limited to this, it can be formed by changing the shape in various ways depending on the location, in particular, the shape of the wall to be installed by the user.

4) magnesium board bonding step (400)

The step is to form a multi-layered panel by bonding magnesium board (MgO) to the surface of the raw material mixture to form a panel through the raw material mixture molding step (300).

2b and 4, the magnesium board 2 is to be conveniently installed on the wall of the building to be installed by bonding the magnesium board 2 to one side or both sides of the raw material mixture (1).

At this time, the magnesium board (2) to be bonded to the raw material mixture (1), as shown in Figure 4, using a thickness of less than 6 ~ 10mm is installed on the wall, even when installed on the wall without convenient space constraints To install it.

In addition, the bonding of the raw material mixture 1 and the magnesium board 2 is performed by joining the magnesium board 2 bonded to one side or both sides of the raw material mixture 1 so that the bonding surface is displaced as shown in FIGS. 2A to 4. As shown in FIG. 3, in the case where the pillars 30 of the wall are installed as a center, the contact surfaces may be stacked so that the contact surfaces may be stacked on each other even when the magnesium board 2 or the raw material mixture 1 is in close contact with each other.

In particular, when the thickness of the raw material mixture 1 is changed through the raw material mixture forming step 300, the magnesium board 2 may be bonded to one side or both sides of the raw material mixture 1 according to the user's selection. Of course, the thickness of the magnesium board 1 can also be determined and joined.

As described above, by selecting the minerals that can be easily supplied through the present invention, and by manufacturing the radioactive shielding material through the above-described process, it is possible to reduce the overall manufacturing cost of the radioactive shielding material, as compared to the conventional method using lead It is possible to provide a method for producing a safe and effective radiation shielding material.

While the invention has been shown and described with respect to specific embodiments thereof, it will be appreciated that the invention can be variously modified and varied without departing from the spirit or scope of the invention as provided by the following claims. It will be obvious to those of ordinary skill.

1 is a process flow diagram of a method of manufacturing a radioactive shielding material according to the present invention.

Figures 2a and 2b is a front view and a side view showing a raw material mixture and a magnesium board bonded according to the present invention.

Figure 3 is a schematic diagram showing the installation state of the raw material mixture and the magnesium board bonded in accordance with the present invention.

Figure 4 is a side view showing another bonding state of the raw material mixture and the magnesium board according to the present invention.

         <Code Description of Main Parts of Drawing>

  1: raw material mixture 2: magnesium board

  3: pillar 100: raw material mixing step

200: additive mixing step 300: raw material mixture forming step

400: magnesium board bonding step

Claims (8)

As a method of manufacturing a radiation shielding material installed on the wall to shield the wavelength of radiation, Raw material mixing step of mixing the raw material forming the powder form into a mixing container (100), Through the step of mixing the raw material 100, the raw material mixture consisting of the raw material of the powder form contained in the mixing vessel is mixed with the additives and heated to 40 ~ 50 ℃ to solidify the raw material mixture in a solid state through the mixing process Additive mixing step (200), Raw material mixture molding step 300 of forming the raw material mixture solidified in the solid state through the additive mixture step 200 in a panel shape and Magnesium board bonding step 400 to form a multi-layer panel form by bonding a magnesium board to the surface of the raw material mixture formed in the panel shape through the raw material mixture forming step 300 Including; The raw material is, Comprising galena, silica and magnesium oxide, further comprising fly ash or zeolite, The galena, It is a garnet of 60-70% purity, The additive mixing step 200, The gypsum, the silica and the above at a ratio of 40 to 50% by weight, 5 to 25% by weight of the silica and 5 to 15% by weight of the magnesium oxide, based on 100% by weight of the total mixture of the raw material mixture and the additive. Mixing magnesium oxide and further mixing the fly ash or the zeolite in a ratio of 10 to 35% by weight or 10 to 35% by weight of the zeolite with respect to a total of 100 wt% of the mixture. Radioactive shielding material manufacturing method characterized in that. delete delete delete delete In claim 1, The additive material, A method for producing a radiation shielding material, characterized in that phosphate or graphite. delete In claim 1, The raw material mixture formed in the panel shape through the raw material mixture forming step 300, It is formed to achieve a thickness within 10 ~ 12mm, The magnesium board, Radiation shielding material manufacturing method characterized in that the thickness of 6 ~ 10mm.

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