Manufacturing method of molten salt block with far-infrared ray function of growth rays and the molten salt block produced as a result

Abstract

The present invention relates to a method for manufacturing a molten salt block, comprising: a preparation step of preparing natural salt and celestial stone as materials and removing brine from the natural salt; a grinding step of coarsely or finely grinding the natural salt and celestial stone as materials; a first melting step of forming a first provisional block by placing a mixture of natural salt and celestial stone into a first receiving plate, then undergoing a high-temperature melting process by repeating a heating process using a first kiln, and then slowly cooling; a second melting step of forming a second provisional block by placing a plurality of the first provisional blocks into a second receiving plate, then undergoing a high-temperature melting process by repeating a heating process using a second kiln, and then slowly cooling; and a shaping step of producing a molten salt block that has solidified into a specific shape by placing a plurality of the second provisional blocks into a molding plate, then undergoing a high-temperature melting process by repeating a heating process using a third kiln, and then slowly cooling. According to the present invention, when a molten salt block, formed by combining pure salt and crushed astronomical stone, is used for purposes such as a sauna booth or brick, far-infrared rays of growth light and negative ions are emitted, and at the same time, to effectively remove harmful substances and impurities such as lead and cadmium contained in the molten salt block through multiple melting processes, a melting process with gradual temperature increase is performed, thereby allowing beneficial substances such as far-infrared rays of growth light and negative ions to be emitted in large quantities when the molten salt block is used for purposes such as a sauna booth or bed flooring, thereby providing the effect of protecting the safety and health of the user.

Description

Technology Field

[0001] The present invention relates to a method for manufacturing a molten salt block equipped with the far-infrared function of growth light and a molten salt block manufactured thereby. More specifically, the invention relates to a method for manufacturing a molten salt block equipped with the far-infrared function of growth light and a molten salt block manufactured thereby, wherein when a molten salt block composed of pure salt such as solar salt and crushed celestial stone is used for purposes such as a sauna booth, bed flooring, or bricks, far-infrared rays of growth light and negative ions are effectively and appropriately emitted, and at the same time, to effectively remove harmful substances and impurities to the human body such as lead, arsenic, and cadmium contained within the molten salt block through multiple melting processes, beneficial substances such as far-infrared rays of growth light and negative ions are emitted in large quantities when the molten salt block is used for purposes such as a sauna booth or bed flooring, thereby protecting the safety and health of the user. Background Technology

[0003] Generally, saunas involve artificially raising the temperature to an appropriate level within a designated space to increase body temperature and promote blood circulation and metabolism. This facilitates the expulsion of harmful toxins and waste products accumulated throughout the body via sweat, while also helping to transform an acidic constitution into an alkaline one and aid in fatigue recovery. As the benefits and conveniences of saunas have become widely known, sauna culture has become popularized. Consequently, many households are installing personal saunas and frequently using them to promote a healthy lifestyle; however, there are limitations to improving the quality of health simply by raising the temperature. In other words, even though there is a need for saunas that can effectively deliver the effective wavelengths of far-infrared rays deep into the human body to promote blood circulation and expand blood vessels using heat generated from the far-infrared wavelength range, thereby alleviating pain in various parts of the body, in-depth development or research on this is still somewhat lacking.

[0004] For example, according to Korean Registered Utility Model No. 0268541 (Prior Art 1), 'a sauna of far-infrared ray-emitting maifan stone blocks is presented, characterized in that, in a sauna of type A structure, a maifan stone block (3) is laid flat on the inclined roof (2a) and side wall (2b) using the flange (1a) of the angle (1) forming the frame (2), and a known heating means (4), such as a steam pipe, hot water pipe, and electric heating wire, is installed on top of it, and red clay soil (5) is applied, and a heat-reflective aluminum foil (6), an insulating material (7), and a waterproof sheet (9) are laminated on top of it, a roof plate (9) is installed on the roof, and a maifan stone block (3) containing the heating means (4) is laid flat on the floor (2c) so that far-infrared rays of maifan stone are concentrated and irradiated into the room from the entire surface of the room.'

[0005] However, in the case of the sauna with the maifan stone blocks of the aforementioned prior art document 1, the maifan stone blocks must be formed through a process of cutting and shaping the maifan stone, but the manufacturing process is very cumbersome and expensive, which causes a significant burden due to the problem of increased costs. Additionally, because it is difficult to form diverse and intricate shapes, the maifan stone blocks cannot be integrated, which can lead to visual discomfort during the sauna.

[0006] As another example, according to Korean Registered Patent No. 1186187 (Prior Art 2), 'a layer of loess stone (100) formed by processing naturally occurring loess stone into a predetermined geometric shape is located in a place facing the interior space of a sauna, a layer of loess soil (200) containing loess soil is located outside the loess stone layer (100), and an outer wall (400) composed of a steel structure (410) and a third loess wall (450) filling the space between the steel structure is located on the outer edge of the loess soil layer (200), thereby forming the walls and ceiling of the sauna, wherein the loess soil layer (200) has a first loess wall (210) and a second loess wall (220) made by hardening loess, and a steel structure (230) inserted between the first and second loess walls arranged on the side closer to the sauna space (inner side), and the A sauna structure using loess stone is presented, characterized by having an insulating material (250) formed on the outer side of a loess soil layer (200), a weathered granite layer (260) made of coarse sand formed on the outer side of the insulating material, and a loess block layer (270) made by hardening loess on the outer side of the weathered granite layer.

[0007] However, as in the example of Prior Art 2 mentioned above, a sauna structure using loess stone has the disadvantage of being difficult to manufacture, not only due to the problem of dust generated from the use of loess but also because it involves the inconvenience of making the booth and is complicated to produce due to the use of various types of materials. Prior art literature

[0008] Korean Registered Utility Model No. 0268541 "Sauna with Maekbanseok Blocks" Korean Registered Patent No. 1186187 "Sauna Structure Using Yellow Clay Stone" The problem to be solved

[0009] The objective of the present invention, which aims to fundamentally improve the aforementioned conventional problems, is to provide a method for manufacturing a molten salt block equipped with a growth light far-infrared function and a molten salt block manufactured thereby, which can protect the safety and health of users by ensuring that when a molten salt block composed of pure salt (such as solar salt) and crushed celestial stone is used for purposes such as sauna booths, bed flooring, or bricks, far-infrared rays and negative ions of growth light are effectively and appropriately emitted, and by undergoing a melting process with gradual temperature increase to effectively remove harmful substances and impurities to the human body, such as lead, arsenic, and cadmium contained within the molten salt block through multiple melting processes, beneficial substances such as far-infrared rays of growth light and negative ions are emitted in large quantities when the molten salt block is used for purposes such as sauna booths or bed flooring. means of solving the problem

[0010] According to the present invention for achieving the above objective, a method for manufacturing a molten salt block to promote human health through high temperature and high heat compresses comprises: a preparation step of preparing natural salt, such as solar salt, and celestial stone as materials, and removing brine through an aging process of the natural salt; a grinding step of finely grinding the natural salt and celestial stone, which are the materials of the preparation step, into coarse or fine grinds; a first melting step of placing a mixture of the natural salt and celestial stone, which are the materials of the grinding step, into a first receiving plate, then repeating a heating process using a first kiln to undergo a high-temperature melting process, and then slowly cooling to form a first provisional block; and a second melting step of placing a plurality of the first provisional blocks formed in the first melting step into a second receiving plate, then repeating a heating process using a second kiln to undergo a high-temperature melting process, and then slowly cooling to form a second provisional block. The method is characterized by comprising a shaping step in which a plurality of second blocks formed in the second melting step are placed into a molding plate, and then the heating process using a third kiln is repeated to undergo a high-temperature melting process, followed by gradual cooling to produce a molten salt block that has solidified into a specific shape.

[0011] At this time, the grinding step according to the present invention is characterized by finely grinding the natural salt and celestial stone, which are raw materials, into a size of approximately 30 to 300 mesh.

[0012] In addition, the melting step according to the present invention is characterized by mixing approximately 95 to 99.9 wt% of natural salt and approximately 0.01 to 5 wt% of celestial stone.

[0013] In addition, the melting step according to the present invention is characterized by melting in the first, second, and third kilns by gradually increasing the temperature to a high temperature to completely remove heavy metals such as arsenic, cadmium, and lead, various impurities, and harmful bacteria, wherein the first kiln is fired at a temperature of 900 to 1,000°C, the second kiln is fired at a temperature of 1,001 to 1,150°C, and the third kiln is heated to a temperature of approximately 1,151 to 1,300°C to melt.

[0014] In addition, the molten salt block of the shaping step according to the present invention is characterized by slowly cooling the mixture, which gradually solidifies after melting, while holding it in a circular, triangular, square, or polygonal molding plate so that its shape can be well maintained.

[0015] In addition, according to the manufacturing method of the present invention described above, natural salt such as solar salt and celestial stone are prepared as materials, and brine is removed through the aging process of the natural salt, then the natural salt and celestial stone are finely crushed or finely crushed, and the mixture of natural salt and celestial stone is placed in a first receiving plate, and then a high-temperature melting process is performed by repeating the heating process using a first kiln, followed by slow cooling to form a first provisional block, and then a plurality of the first provisional blocks are placed in a second receiving plate, and then a high-temperature melting process is performed by repeating the heating process using a second kiln, followed by slow cooling to form a second provisional block, and then a plurality of the second provisional blocks are placed in a molding plate, and then a high-temperature melting process is performed by repeating the heating process using a third kiln, followed by slow cooling to produce a molten salt block that has solidified into a certain shape.

[0016] Meanwhile, prior to this, terms and words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings, but should be interpreted in a meaning and concept consistent with the technical spirit of the invention, based on the principle that the inventor can appropriately define the concept of the terms to best describe his invention. Accordingly, the embodiments described in this specification and the configurations illustrated in the drawings are merely the most preferred embodiments of the invention and do not represent all of the technical spirit of the invention; therefore, it should be understood that various equivalents and modifications capable of replacing them may exist at the time of filing this application. Effects of the invention

[0017] According to the present invention, when a molten salt block, composed of pure salt such as solar salt and crushed celestial stone, is used for purposes such as a sauna booth, bed flooring, or bricks, far-infrared rays and negative ions of growth light are effectively and appropriately emitted, and at the same time, in order to effectively remove harmful substances and impurities to the human body, such as lead, arsenic, and cadmium contained within the molten salt block through multiple melting processes, a melting process with gradual temperature increase is performed, thereby allowing beneficial substances such as far-infrared rays and negative ions of growth light to be emitted in large quantities when the molten salt block is used for purposes such as a sauna booth or bed flooring, the effect of protecting the safety and health of the user is provided. Brief explanation of the drawing

[0018] FIG. 1 is a block diagram sequentially illustrating a method for manufacturing a molten salt block according to the present invention. FIG. 2 is an exemplary diagram showing the grinding step of the method for manufacturing a molten salt block according to the present invention. FIGS. 3a and 3b are a cross-sectional view and a perspective view illustrating the first melting step according to the present invention. FIGS. 4a and 4b are a cross-sectional view and a perspective view illustrating the second melting step according to the present invention. FIGS. 5a and 5b are a cross-sectional view and a perspective view illustrating the shaping step of the method for manufacturing a molten salt block according to the present invention. Specific details for implementing the invention

[0019] Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the attached drawings.

[0020] The present invention relates to a method for manufacturing a molten salt block used for purposes such as a hot compress booth (1), bed flooring, and bricks, which aims to promote human health through high temperature and high heat compresses, and comprises a preparation step (S10), a crushing step (S20), a first melting step (S30), a second melting step (S40), and a shaping step (S50).

[0021] The preparation step (S10) according to the present invention prepares natural salt (11), such as solar salt, and celestial stone (12) as materials (10), and removes brine through the aging process of the natural salt (11). In this preparation step (S10), celestial stone (12) is first prepared as materials (10) along with various types of natural salt (11), such as solar salt, rock salt, refined salt, lake salt, etc. Then, in the case of natural salt (11), such as solar salt, brine contained within the natural salt (11) is removed through the aging process, and this brine can also be removed through a separate drying process. In addition, various components are precipitated as a single crystal in natural salt (11), but the brine formed by absorbing moisture from the air and melting, in addition to the crystals of components that are not crystallized and various impurities and residual substances, is removed. This is done by removing the brine that absorbs moisture from the air and melts, in addition to the crystals and various impurities and residual substances contained within the brine, through a process of removing the brine over a long period of time or instantaneously. This is intended to prevent harmful substances from entering the user's respiratory system or skin, etc., due to the high temperature that will be generated when the molten salt block (70) is installed in a sauna booth (1). In this preparation stage (S10), since the brine is removed through a maturation process, some impurities and residual substances are removed, but it cannot be perfect. Therefore, harmful substances to the human body can be naturally removed through the first melting stage (S30), second melting stage (S40), and shaping stage (S50) that will be carried out later.

[0022] In addition, the grinding step (S20) according to the present invention causes the natural salt (11) and the celestial stone (12), which are the materials (10) of the preparation step (S10), to be broken into small pieces. That is, in the grinding step (S20), the natural salt (11) formed in the form of a large lump through the aging process in the preparation step (S10) and the celestial stone (12) in the form of a stone or rock undergo a coarse grinding or fine grinding process to break them into a certain size.

[0023] At this time, the crushing step (S20) is characterized by finely crushing or finely crushing the natural salt (11) and celestial stone (12), which are the raw materials (10), into a size of approximately 30 to 300 mesh. These natural salt (11) and celestial stone (12) are formed into sizes of 30 to 300 mesh each or crushed in batches. In the case of these natural salt (11) and celestial stone (12), it is desirable to crush them into small sizes because a single molten salt block (70) must be created through the sequential operations of the first, second, and third melting steps (S30) and shaping steps (S50) described later; however, since each crushed granule must be formed so that it smoothly clumps together to become an integral, they are crushed into various sizes suitable for the situation.

[0024] In addition, the first melting step (S30) according to the present invention forms a first block (50) by gradually cooling after undergoing a high-temperature melting process by repeating a heating process using a first kiln (30) while the mixture (20) of the raw material (10) of the crushing step (S20), which is natural salt (11) and astronomical stone (12), is placed in a first receiving plate (40). The natural salt (11) and astronomical stone (12) of the raw material (10), which are crushed individually or collectively to a size of 30 to 300 mesh through the crushing step (S20), are mixed together to form a single mixture (20). At this time, it is of course possible to use only natural salt (11) without mixing natural salt (11) and astronomical stone (12). Then, the above-mentioned mixture (20) is moved into the kiln (30) while contained in the first receiving plate (40) and a melting process is performed through a heating process. During the heating process, the temperature is appropriately controlled through a gradual heating operation, so that the natural salt (11) is naturally and evenly melted, and at the same time, crushed celestial stone (12) is contained between the melted natural salt (11) and appropriately mixed. In this way, the mixture (20) melted by the first kiln (30) is slowly cooled while contained in the first receiving plate (40) to form the first block (50).

[0025] Additionally, in the second melting step (S40) according to the present invention, a plurality of first blocks (50) from the first melting step (S30) are placed in a second receiving plate (41), and then the heating process using the second kiln (31) is repeated to undergo a high-temperature melting process, after which the second blocks (51) are slowly cooled to form the second blocks (51). In the second melting step (S40), a plurality of first blocks (50) formed in the aforementioned first melting step (S30) are gathered, melted again in the second kiln (31), and then slowly cooled while placed in the second receiving plate (41) to form the second blocks (51).

[0026] In addition, the shaping step (S50) according to the present invention involves placing a number of second blocks (51) from the second melting step (S40) into a molding plate (60), and then repeating the heating process using the third kiln (32) to undergo a high-temperature melting process, followed by slow cooling to produce a molten salt block (70) of a certain shape. In this shaping step (S50), the completed molten salt block (70) is formed into a certain shape so that it can be mounted and used for purposes such as a sauna booth, bed flooring, or brick.

[0027] Meanwhile, although the present invention is described primarily with the first melting step (S30), the second melting step (S40), and the shaping step (S50) as described above, the second melting step (S40) may be omitted, and it is also possible to omit the first melting step (S30) and the second melting step (S40) and immediately produce the molten salt block (70) using only the shaping step (S50). However, it is added that if the melting step is reduced, cracks, which are a disadvantage of the molten salt block (70), may often occur.

[0028] Ultimately, forming the first block (50), second block (51), and molten salt block (70) in sequence through repeated melting and slow cooling of the mixture (20) in which natural salt (11) and celestial stone (12) are mixed, as described in the first melting step (S30), second melting step (S40), and shaping step (S50), is intended to remove foreign substances and heavy metals such as lead, arsenic, and cadmium remaining in the natural salt (11) and celestial stone (12) through repeated melting and slow cooling processes, and to prevent cracks caused by impurities.

[0029] Additionally, the above-mentioned melting steps (S30)(S40)(S50) are characterized by mixing approximately 95–99.9 wt% of natural salt (11) and approximately 0.01–5 wt% of astronomical stone (12). That is, in the melting steps (S30)(S40)(S50), 95–99.9 wt% of natural salt (11) and 0.01–5 wt% of astronomical stone (12) are mixed. At this time, while the natural salt (11) and astronomical stone (12) are well mixed in the above ratio in the first melting step (S30), the melting and slow cooling may be repeated in the subsequent melting steps (S40)(S50), but the ratio of the natural salt (11) and astronomical stone (12) mixed in the first melting step (S30) may be formed differently. However, as the proportion of celestial stone (12) increased, cracking problems occurred, so we will examine this through the example in below.

[0030]

[0031]

[0032] As shown in above, when natural salt (11) and celestial stone (12) are mixed together, it was found that as the proportion of celestial stone (12) increases, the average ratio of crack formation also increases when the finished molten salt block (70) is produced. That is, when the proportion of celestial stone (12) is mixed at 5 wt% or more, the area where cracks are formed in the total area of ​​the molten salt block (70) is 0.5% or more, and accordingly, when the molten salt block (70) is used in the actual field, it is easily damaged by even small external impacts, and the defect rate of the molten salt block (70) also increases. Therefore, it can be seen that when mixing celestial stone (12) with natural salt (11), mixing at 5 wt% or more is an appropriate mixing ratio.

[0033] In addition, the melting step (S30)(S40)(S50) according to the present invention is characterized by melting at a high temperature using a gradual increase in temperature in each of the first to third kilns (30)(31)(32) to enable complete removal of various impurities, foreign substances, heavy metals, harmful bacteria, etc., wherein the first kiln (30) is fired at a temperature of 800 to 1,000°C, the second kiln (31) is fired at a temperature of 1,001 to 1,150°C, and the third kiln (32) is heated to a temperature of 1,151 to 1,300°C to melt. These melting steps (S30)(S40)(S50) are performed by heating to a temperature of approximately 800 to 1,300°C to melt the natural salt (11) and celestial stone (12) so that heavy metals, impurities, and substances harmful to the human body contained within them can be removed through a gradual heating process, and then the melting and slow cooling process is repeated to sequentially produce the first block (50), the second block (51), and the molten salt block (70).

[0034] In addition, the molten salt block (70) of the shaping step (S50) according to the present invention is characterized by slowly cooling the mixture (20), which gradually solidifies after melting, while it is contained in a circular, triangular, square, or polygonal molding plate (60) so that its shape can be well maintained. The molten salt block (70) is formed by placing the mixture (20), which is melted through a kiln (42), into various shapes of molding plates (60) and slowly cooling it so that a circular, triangular, square, or polygonal molten salt block (70) can be completed. The shape of the molten salt block (70), which can be formed in various ways, has a unique decorative beauty depending on its form and shape, and has the effect of enabling the mass emission of far-infrared rays and negative ions. Also, when slow cooling, it is desirable to maintain a temperature of around 1,000°C and gradually lower the temperature until it drops to 200°C to 30°C or lower, rather than a rapid drop in temperature, because a large number of cracks may occur in the generated molten salt block (70). And when the molten salt block (70) of natural salt (11) and astronomical stone (12) is generated, the main reason for wanting to reduce or eliminate cracks is that even small cracks can be easily damaged by external impact, so reducing these cracks is a very important issue.

[0035] And when the amount of far-infrared radiation emitted is obtained by mixing natural salt (11) and celestial stone (12) in a molten salt block (70), it is as shown in below.

[0036]

[0037] Table 2

[0038] As shown in above, in order to determine the difference in the amount of far-infrared radiation emitted through various combination ratios of natural salt (11) and astronomical stone (12), which are the materials (10) of the molten salt block (70), a temperature of 40 to 45°C, which is a temperature that the human body can withstand, was separately applied to the molten salt block (70). It was found that as the ratio of astronomical stone (12) to natural salt (11) and astronomical stone (12) increased, the amount of far-infrared radiation emitted gradually increased. However, when forming the molten salt block (70) by mixing natural salt (11) and astronomical stone (12) in a molten state, if an excessive amount of astronomical stone (12) is added, as shown in above, not only is it difficult to form various shapes of molten salt blocks (70), but cracks also occur quite frequently, so it appears desirable to mix natural salt (11) and astronomical stone (12) in an appropriate ratio.

[0039]

[0040] Table 3

[0041] Meanwhile, the above is a diagram for understanding the far-infrared wavelengths of growth rays, which are known to be most beneficial to the human body. Growth rays are known to be the best far-infrared rays that are most easily absorbed by human cells among far-infrared rays, and it is known that the wavelength range of these growth rays accounts for only about 1.5% of the total wavelength range of far-infrared rays (IR). In other words, infrared rays emitted from sunlight are classified into near-infrared, mid-infrared, and far-infrared electromagnetic waves, and their respective wavelength ranges are classified as follows: near-infrared is 0.76–1.5㎛, mid-infrared is around 1.5–5㎛, and far-infrared is 5–1,000㎛. However, among these, the far-infrared wavelength range of 5 to 20 μm is known to be the growth light that best suits the cell tissues of the human body. This wavelength range of growth light is known to be the optimal wavelength range that can raise the body temperature by more than 1°C while being easily absorbed by human cells and activating cell functions. On the other hand, the wavelength range continuously emitted by the human body is 4 to 14 μm, which is called human body wave. When growth light penetrates deep into the human body, the human body wave and growth light combine to cause vigorous atomic motion, thereby raising the body temperature by more than 1°C. Accordingly, the present invention also forms the molten salt block (70) with natural salt (11) or a mixture of natural salt (11) and astronomical stone (12) to enable the expression of the far-infrared wavelength range of growth light. Therefore, when the molten salt block (70) according to the present invention is utilized, it is said to have a beneficial action and effect that greatly helps to raise the body temperature by more than 1°C by supplying growth light that activates human cells.

[0042] According to the present invention, when a molten salt block composed of pure salt, such as solar salt, and crushed celestial stone is used for purposes such as a sauna booth, bed flooring, or bricks, far-infrared rays and negative ions of growth light are effectively and appropriately emitted, and at the same time, when the molten salt block is used for purposes such as a sauna booth or bed flooring, beneficial substances such as far-infrared rays and negative ions of growth light are emitted in large quantities, thereby protecting the safety and health of the user.

[0043] It is obvious to those skilled in the art that the present invention is not limited to the described embodiments and can be modified and varied in various ways without departing from the spirit and scope of the invention. Accordingly, such variations or modifications should be considered to fall within the scope of the patent claims of the present invention. Explanation of the symbols

[0044] 10: A Ingredient 11: Natural salt 12: Astronomical Stone 20: Mixture 30: 1st Kiln 31: 2nd Kiln 32: Third firing furnace 40: First receiving plate 41: Second receiving plate 50: First block 51: 2nd Block 60: Molded Plate 70: Molten Salt Block S10: Preparation Step S20: Grinding step S30: First melting step S40: Second melting stage S50: Shaping stage

Claims

Claim 1 A method for manufacturing a molten salt block to promote human health through high temperature and high heat compresses, comprising: a preparation step (S10) of preparing natural salt (11) and celestial stone (12) as raw materials (10) and removing brine through an aging process of the natural salt (11); and a grinding step (S20) of finely grinding or coarsely grinding the natural salt (11) and celestial stone (12) that are the raw materials (10) of the preparation step (S10). A first melting step (S30) in which a mixture (20) of natural salt (11) and astronomical stone (12), which is the raw material (10) of the above crushing step (S20), is placed in a first receiving plate (40), and then a high-temperature melting process is repeated using a first kiln (30), and then slowly cooled to form a first block (50); and a second melting step (S40) in which a plurality of the first blocks (50) formed in the above first melting step (S30) are placed in a second receiving plate (41), and then a high-temperature melting process is repeated using a second kiln (31), and then slowly cooled to form a second block (51). The method comprises a shaping step (S50) in which a plurality of the second blocks (51) formed in the second melting step (S40) are placed into a molding plate (60), and then the heating process using the third kiln (32) is repeated to undergo a high-temperature melting process, followed by gradual cooling to produce a molten salt block (70) that has solidified into a certain shape. The first melting step (S30), the second melting step (S40), and the shaping step (S50) are performed by mixing approximately 95–99.9 wt% of natural salt (11) and approximately 0.01–5 wt% of celestial stone (12), and by melting through gradual heating to a high temperature in the first kiln (30), the second kiln (31), and the third kiln (32) so that heavy metals such as arsenic, cadmium, and lead, various impurities, and harmful bacteria are completely removed. The first kiln (30) A method for manufacturing a molten salt block having a far-infrared function of growth light, characterized by firing at a temperature of 800 to 1,000°C, firing in a second firing furnace (31) at a temperature of 1,001 to 1,150°C, and heating and melting in a third firing furnace (32) at a temperature of 1,151 to 1,300°C. Claim 2 In claim 1, the grinding step (S20) is characterized by finely grinding the natural salt (11) and celestial stone (12), which are the raw materials (10), into a size of approximately 30 to 300 mesh, in a method for manufacturing a molten salt block having a far-infrared function of growth light. Claim 3 delete Claim 4 delete Claim 5 A method for manufacturing a molten salt block having a far-infrared function of growth light according to claim 1, characterized in that, among the first melting step (S30), the second melting step (S40), and the shaping step (S50) described above, the second melting step (S40) is omitted, or the first melting step (S30) and the second melting step (S40) are omitted and the molten salt block (70) can be produced immediately using only the shaping step (S50). Claim 6 In claim 1, the molten salt block (70) of the shaping step (S50) is characterized by slowly cooling the mixture (20), which gradually hardens after melting, while it is contained in a circular, triangular, square, or polygonal molding plate (60) so that its shape can be well maintained. Claim 7 A molten salt block having a far-infrared function of growth light, characterized by being manufactured using the manufacturing method of Claim 1 above.

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