Packaging and storage methods for firebricks

Abstract

This suppresses the occurrence of cracks in basic refractory bricks during storage. [Solution] A package 1 of refractory bricks 2, in which the refractory bricks 2 are packaged in a packaging material 4 together with a desiccant 3, wherein the refractory bricks 2 are basic refractory bricks, and the desiccant 3 contains one or more desiccants selected from the group consisting of clay minerals, zeolite, activated carbon, and type B silica gel. Also, a method for storing refractory bricks 2, in which the refractory bricks 2 are packaged in a packaging material 4 together with a desiccant 3, wherein the refractory bricks 2 are basic refractory bricks, and the desiccant 3 contains one or more desiccants selected from the group consisting of clay minerals, zeolite, activated carbon, and type B silica gel.

Description

Technical Field

[0001] The present disclosure relates to a package and a storage method for refractory bricks.

Background Art

[0002] Basic refractory bricks are widely used as linings for various iron-making furnaces, non-ferrous smelting furnaces, cement rotary kilns, etc., because of their excellent corrosion resistance to basic slag.

[0003] It is known that when periclase (MgO) or lime (CaO), which are the main constituent minerals of basic refractory bricks, undergoes a hydration reaction (digestion reaction) with moisture in the air, hydroxides are formed and the volume expands. Due to this volume expansion, cracks, powdering, etc. may occur in basic refractory bricks during storage. To suppress this hydration reaction, a method of storing refractory bricks in a storage warehouse where temperature and humidity can be adjusted is conceivable. However, it is not practical to store a large amount of bricks, such as about several hundred tons required for furnace repairs of cement rotary kilns, etc., in a storage warehouse where temperature and humidity can be adjusted for a long period of, for example, one year or more.

[0004] Therefore, it has been proposed to package basic refractory bricks together with a desiccant during storage. For example, Japanese Patent Application Laid-Open No. 2005-021924 (Patent Document 1) discloses a method of packaging, for each lot unit, a nozzle provided with an inner lining of a refractory material containing a CaO component having digestibility, together with a desiccant, in a package that prevents contact with the outside air, storing it, opening the package according to the casting schedule, taking out the nozzle, preheating the nozzle to 800 to 1200°C, and then using it for casting. A continuous casting method using a nozzle provided with a CaO-containing inner lining is disclosed.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

[0006] Patent Document 1 specifically cites quicklime granules, a mixed powder of quicklime and MgO, and an anhydrous compounds containing free lime as examples of desiccants. However, when the present inventors stored basic refractory bricks with a desiccant made of quicklime, there were still cases where the occurrence of cracks was not sufficiently improved. Thus, there is still room for improvement in the packaging of refractory bricks and the storage method of refractory bricks to suppress the occurrence of cracks in basic refractory bricks during storage.

[0007] Therefore, the object of the present invention is to provide a packaging material for refractory bricks and a method for storing refractory bricks that suppresses the occurrence of cracks during storage. [Means for solving the problem]

[0008] The refractory brick packaging according to the present invention is a refractory brick packaging in which refractory bricks are packaged together with a desiccant in a packaging material, characterized in that the refractory bricks are basic refractory bricks, and the desiccant contains one or more desiccants selected from the group consisting of clay minerals, zeolites, activated carbon, and type B silica gel.

[0009] Furthermore, the present invention relates to a method for storing refractory bricks, comprising the process of packaging the refractory bricks together with a desiccant in a packaging material to create a package, and then storing the package, wherein the refractory bricks are basic refractory bricks, and the desiccant contains one or more desiccants selected from the group consisting of clay minerals, zeolites, activated carbon, and type B silica gel.

[0010] With these configurations, the basic refractory bricks are packaged in packaging material along with a desiccant that has a mechanism for acquiring and removing moisture, thus suppressing large fluctuations in humidity within the packaging. The aforementioned desiccant can suppress a rapid decrease in the moisture content of the basic refractory bricks, thereby suppressing the occurrence of cracks.

[0011] Preferred embodiments of the present invention will be described below. However, the scope of the present invention is not limited by the examples of preferred embodiments described below.

[0012] In one embodiment of the refractory brick packaging according to the present invention, it is preferable that the basic refractory brick is a magnesia-containing brick.

[0013] This configuration can suppress the occurrence of cracks in magnesia-containing bricks, which are prone to cracking.

[0014] In one embodiment of the refractory brick packaging according to the present invention, it is preferable that the magnesia-containing brick is a magnesia-spinel brick.

[0015] This configuration can suppress the occurrence of cracks in magnesia-spinel bricks, which are prone to cracking.

[0016] In one embodiment, the refractory brick packaging according to the present invention preferably contains at least clay minerals as the drying agent.

[0017] This configuration makes it easier to suppress large fluctuations in humidity within the packaging, and can further suppress the occurrence of cracks in the basic refractory bricks.

[0018] In one embodiment, the refractory brick packaging according to the present invention preferably contains at least allophane in the clay mineral.

[0019] This configuration makes it easier to suppress large fluctuations in humidity within the packaging, and can further suppress the occurrence of cracks in the basic refractory bricks.

[0020] In one embodiment, the method for storing refractory bricks according to the present invention may include storing the packaging in a place where the average annual temperature is 15 degrees Celsius or higher and the average annual relative humidity is 60% or higher.

[0021] According to this configuration, even when stored in a place where it is likely to contain a large amount of moisture, the occurrence of cracks in the basic refractory bricks can be suppressed.

[0022] The method for storing refractory bricks according to the present invention may include, as one aspect, storing during a period in which the average temperature of a day is equal to or higher than a predetermined threshold value and the average relative humidity of a day is equal to or higher than a predetermined threshold value.

[0023] According to this configuration, even when stored during a period in which it is likely to contain a large amount of moisture, the occurrence of cracks in the basic refractory bricks can be suppressed.

[0024] The method for storing refractory bricks according to the present invention may include, as one aspect, storing the package during a period in which the average value of the difference between the maximum temperature and the minimum temperature of a day is equal to or higher than a predetermined threshold value.

[0025] According to this configuration, even when stored during a period in which the temperature difference between day and night is large, the occurrence of cracks in the basic refractory bricks can be suppressed.

[0026] Further features and advantages of the present invention will become more apparent from the following description of exemplary and non-limiting embodiments taken in conjunction with the drawings.

Brief Description of the Drawings

[0027] [Figure 1] It is a cross-sectional schematic view showing a package of refractory bricks of an embodiment.

Modes for Carrying Out the Invention

[0028] Embodiments of the package of refractory bricks and the method for storing refractory bricks according to the present invention will be described with reference to the drawings. Hereinafter, a package 1 of refractory bricks 2 as an embodiment of the package of refractory bricks according to the present invention and a method for storing the refractory bricks 2 will be described with reference to FIG. 1.

[0029] [Configuration of Package of Refractory Bricks] As shown in Figure 1, the packaging 1 according to this embodiment consists of refractory bricks 2 packed together with a desiccant 3 in a packaging material 4. The refractory bricks 2 are used as lining material for various furnaces for steelmaking, furnaces for non-ferrous metal smelting, cement rotary kilns, etc. After the manufacture of the refractory bricks 2, they are transported to or near the construction site and stored until construction. In this embodiment, the packaging 1 consists of stacked refractory bricks 2 covered with the packaging material 4 on the outside, limiting contact between the refractory bricks 2 inside the packaging 1 and the outside air, and also limiting the free movement of gases inside the packaging 1 to some extent. However, the movement of gases inside the packaging 1 is not completely prohibited, and it is gradually affected by the humidity of the outside air in the storage environment.

[0030] The inventors investigated the occurrence of cracks in basic refractory bricks stored in Japan and found that the frequency of crack occurrence was relatively low during the humid rainy season and the hot and humid summer, while the rate of crack occurrence in basic refractory bricks was highest from autumn to early winter. Therefore, the inventors estimated that fluctuations in humidity have a greater influence on the occurrence of cracks in basic refractory bricks than the level of humidity, leading to this disclosure.

[0031] <Firebricks> Refractory brick 2 is a basic refractory brick. Basic refractory bricks are not limited to any refractory brick that exhibits basic properties, but examples include magnesia-containing bricks with magnesia (MgO) as the main component. Magnesia-containing bricks are not particularly limited to basic refractory bricks with magnesia as the main component, and examples include magnesia-based bricks, magnesia-chromium-based bricks, magnesia-spinel-based bricks, and magnesia-carbon bricks. Among these, magnesia-containing bricks are preferably used as basic refractory bricks. Among magnesia-containing bricks, magnesia-based bricks, magnesia-chromium-based bricks, and magnesia-spinel-based bricks are more preferably used, and magnesia-spinel-based bricks are even more preferably used. In the following embodiment, the case of magnesia-containing bricks will be described as an example.

[0032] <Dry material> As the desiccant 3, one or more desiccants selected from the group consisting of clay minerals, zeolites, activated carbon, and type B silica gel are used. Clay minerals, zeolites, activated carbon, and type B silica gel are physicoadsorption type desiccants that can adsorb and release moisture at room temperature, and thus have a so-called humidity control function. These desiccants are clearly distinguished from irreversible chemical reaction type desiccants that react irreversibly with water, such as quicklime.

[0033] In particular, the desiccant 3 is preferably one containing a clay mineral-based desiccant. Clay mineral-based desiccants have excellent physical adsorption properties for water vapor (moisture) and easily suppress fluctuations in relative humidity inside the packaging 1. Examples of clay mineral-based desiccants include, but are not limited to, those containing at least one of kaolinite, allophane, montmorillonite, chlorite, sericite, etc. Among these, allophane and montmorillonite are preferably used, and allophane is particularly preferably used. Allophane is an alumina-silica gel-based desiccant with the chemical formula (Al2O3·SiO2). m (H2O) n It is expressed as and refers to a natural product refined and extracted from volcanic ash weathered soil. Allophane is particularly excellent in its physical adsorption properties for water vapor.

[0034] Furthermore, the desiccant used in desiccant 3 may be in the form of granules or other particulate matter, or it may be granules or other particulate matter that has been granulated into larger particles. It may also be molded into tablets, blocks, or other shapes. These desiccants may be placed in bags made of breathable nonwoven fabric or similar material.

[0035] The desiccant used in drying agent 3 is preferably one that has an average pore diameter smaller than the average pore diameter of the refractory brick. Since the pores of the refractory brick are approximately 1 μm or larger, the desiccant preferably has an average pore diameter of 100 nm or less. The average pore diameter can be measured by methods such as gas adsorption. Furthermore, it is also preferable that the desiccant has properties such as hollow particles.

[0036] The amount of desiccant 3 packed with the refractory bricks 2 is not particularly limited, but for example, in the case of clay mineral-based desiccants, if an amount of 200g or more per ton of refractory bricks is included, the bricks can be stored for one year without cracking. A more preferable amount of desiccant 3 is 400g or more per ton of refractory bricks. The upper limit of the amount of desiccant 3 is not particularly limited, but for example, it can be set to 4000g or less.

[0037] The desiccant 3 may consist solely of the physical adsorption type desiccant described above, or it may be used in combination with a chemical adsorption type desiccant that reacts chemically with moisture, such as calcium oxide. As mentioned above, chemical adsorption type desiccants such as quicklime and slaked lime may also be added.

[0038] <Packaging material> The packaging material 4 should be able to pack both the refractory bricks 2 and the desiccant 3, and should be able to provide an outer covering that minimizes direct contact with the outside air. For example, the packaging material 4 may be made of stretch film and wrapped around the refractory bricks 2 and the desiccant 3, or the refractory bricks 2 and the desiccant 3 may be placed in a plastic bag, a bag with a plastic coating layer, etc. Among these, stretch film is preferably used because it makes it easy to pack multiple refractory bricks 2 stacked on a pallet or the like. As the packaging material 4, polyethylene film, polypropylene film, polyethylene terephthalate film, etc., are preferably used. The packaging material 4 may contain other items as long as it packs both the refractory bricks 2 and the desiccant 3. For example, all or part of the refractory brick stacking platform (e.g., pallet) may be packed together with the refractory bricks 2 and the desiccant 3.

[0039] [Storage method for firebricks] The method for storing refractory bricks involves creating a package 1 by packing the refractory bricks 2 together with a desiccant 3 in a packaging material 4, and then storing the prepared package 1. Specifically, as described above, the method involves packing basic refractory bricks together with one or more desiccants selected from the group consisting of clay minerals, zeolite, activated carbon, and type B silica gel in a packaging material 4 for storage. In this embodiment, the refractory bricks 2 are arranged and stacked on a wooden or other pallet, and the package 1 is packed together with the desiccant 3 and then covered with a packaging material 4 such as stretch film.

[0040] Refractory bricks 2, packaged in packaging material 4, have limited contact with the outside air and are therefore less susceptible to the immediate effects of external humidity. On the other hand, the free movement of gases within the packaging is also restricted to some extent, so the absolute amount of water vapor (moisture) within the packaging does not fluctuate significantly over short periods. In other words, since the absolute amount of water vapor (moisture) within the packaging remains roughly constant over short periods, the relative humidity within the packaging without the aforementioned desiccant 3 fluctuates significantly depending on the ambient temperature. Therefore, if the aforementioned desiccant 3 is not included, for example, if there is a large temperature difference (difference between the maximum and minimum temperature) over a short period such as a day, the relative humidity within the packaging is likely to fluctuate drastically. Conversely, over longer periods such as months, the refractory bricks 2 within the packaging are gradually affected by the humidity of the external atmosphere. Therefore, for example, refractory bricks 2 stored in Japan during the hot and humid rainy season to summer will naturally absorb moisture if no desiccant is included, and may gradually absorb moisture even if a desiccant is included.

[0041] If the aforementioned desiccant 3 is not included, and the storage period for the refractory bricks 2, which have absorbed moisture in a high-temperature, high-humidity environment, shifts to a season with a large difference between the daily maximum and minimum temperatures (for example, from autumn to early winter), the relative humidity of the air inside the packaging will fluctuate significantly. When the ambient temperature decreases, the relative humidity inside packaging 1 increases, making it easier for the MgO hydration reaction to proceed. Also, when the ambient temperature rises, the relative humidity inside packaging 1 decreases, but the moisture that was retained in the porous refractory bricks 2 is released into the air inside the packaging. It is thought that when this moisture is retained in the refractory bricks 2 again, it comes into contact with unreacted MgO and the hydration reaction proceeds. Because these phenomena can occur, it is thought that the MgO hydration reaction is more likely to proceed in environments with a large difference between the daily maximum and minimum temperatures.

[0042] In contrast, the packaging body 1 of this embodiment includes the aforementioned group of desiccants 3, and the desiccants 3 can adsorb and release moisture within the packaging body 1 at room temperature, thus suppressing fluctuations in the relative humidity inside the packaging body 1. That is, when the ambient temperature rises, the desiccants 3 release the adsorbed moisture into the packaging body 1, and when the ambient temperature falls, they absorb water vapor (moisture) inside the packaging body 1. In this way, the desiccants 3 can suppress fluctuations in the relative humidity inside the packaging body 1, thereby suppressing the occurrence of cracks in the refractory bricks 2. Furthermore, even if gaps form in the packaging material 4 of the packaging body 1 or the packaging material 4 is torn during long-term storage, most of the refractory bricks 2 are covered by the packaging material 4, and the relative humidity of the air inside the packaging body 1 fluctuates over time, so it is considered that fluctuations in the relative humidity inside the packaging body 1 over a short period of time can be suppressed.

[0043] Based on the above considerations regarding the progress of the hydration reaction in refractory bricks, the following storage environments (1) to (3) are examples of environments in which cracks are likely to occur in refractory bricks. The benefits of applying the present invention are particularly great in storage environments such as those exemplified here. However, the following storage environments (1) to (3) are merely examples, and the storage method for refractory brick 2 of the present invention is not limited to storage in the following storage environments (1) to (3).

[0044] (1) Store package 1 in a place where the average annual temperature is 15 degrees Celsius or higher and the average annual relative humidity is 60% or higher. In places (regions) where the average annual temperature is 15 degrees Celsius or higher and the average daily relative humidity is 60% or higher, there is a large amount of water vapor (moisture) in the atmosphere, so the refractory bricks 2 inside the packaging during storage are more likely to absorb moisture. However, even when the refractory bricks 2 are stored in such places where moisture is likely to be present, the storage method of the refractory bricks 2 according to this embodiment suppresses fluctuations in relative humidity inside the packaging 1 and can suppress the occurrence of cracks in the refractory bricks 2 because the desiccant 3 described above is included. Furthermore, the storage period in the above-mentioned places may be two months or more. Here, the average annual temperature and average annual relative humidity may be calculated based on statistics from the past year, or they may be calculated based on statistics from the past several years, for example, based on the average values ​​of the past several years.

[0045] (2) Store the package 1 for a period of time (referred to as the first period) in which the average daily temperature is above a predetermined threshold and the average daily relative humidity is above a predetermined threshold. During the first period, a large amount of water vapor (moisture) is present in the atmosphere, making it easier for the refractory bricks 2 inside the packaging to absorb more moisture during storage. However, according to the storage method for refractory bricks 2 according to this embodiment, the occurrence of cracks in the refractory bricks 2 can be suppressed, similar to (1) above. Specifically, for example, the predetermined threshold for the average daily temperature during the first period may be 25 degrees Celsius, and the predetermined threshold for the average daily relative humidity may be 70%. Also, the storage period during the first period may be two months or more.

[0046] (3) Store the package 1 for a period (referred to as the second period) during which the average difference between the maximum and minimum temperatures of the day is equal to or greater than a predetermined threshold. During the second period, fluctuations in relative humidity within the packaging tend to be large. However, according to the storage method for the refractory bricks 2 of this embodiment, a desiccant 3 capable of adsorbing and releasing moisture at room temperature is included, thereby suppressing fluctuations in relative humidity within the packaging 1 and preventing cracks from forming in the refractory bricks 2. Specifically, the predetermined threshold for the average difference between the maximum and minimum temperatures per day during the second period may be 10 degrees. Furthermore, the storage period during the second period may be 30 days or more. As mentioned above, environments with large differences between the maximum and minimum temperatures per day tend to occur due to seasonal transitions, etc., and are also susceptible to influences from the storage location (region). For example, in Japan, inland areas tend to have large differences between the maximum and minimum temperatures per day.

[0047] In this embodiment, only one of the storage environments described in (1) to (3) above may be applied, or multiple environments may be applied simultaneously or sequentially. The order in which (1) to (3) are applied sequentially is not particularly limited, but for example, the following order of (4) to (6) may be applied.

[0048] (4) After being stored in the location specified in (1) above, it must be stored for the period specified in (3) above.

[0049] (5) After being stored during the period specified in (2) above, it must be stored during the period specified in (3) above.

[0050] (6) After being stored in the place specified in (1) above for the period specified in (2) above, it is to be stored for the period specified in (3) above.

[0051] The storage environments described in (4) to (6) above are particularly susceptible to external environmental fluctuations, as the refractory bricks 2 are stored in an environment where they easily absorb a lot of moisture, and then in an environment where there is a large difference between the maximum and minimum temperatures of the day. However, according to the storage method for refractory bricks 2 in this embodiment, the refractory bricks 2 are stored in packaging material 4 together with a desiccant 3 that can absorb and release moisture at room temperature. This suppresses fluctuations in relative humidity inside the packaging 1 due to fluctuations in the external environment, thereby suppressing the occurrence of cracks.

[0052] [Other embodiments] Other embodiments of the refractory brick packaging and refractory brick storage method according to the present invention will be described below. Note that the configurations disclosed in each of the following embodiments can be applied in combination with configurations disclosed in other embodiments, as long as no inconsistencies arise.

[0053] In the above embodiment, the configuration of the packaging body 1 shown in Figure 1 was described as an example. However, the arrangement of the refractory bricks 2 and the desiccant 3 within the packaging body 1 is not limited in the present invention. For example, the desiccant 3 may be placed on the upper side or outer surface of the refractory bricks 2, or between the refractory bricks 2 and the packaging material 4.

[0054] In the above embodiment, a storage method was described as an example for a package 1 containing refractory bricks 2 that have absorbed moisture in a high-temperature, high-humidity environment, when transitioning to a season with a large difference between the maximum and minimum daily temperatures (temperature fluctuations). However, the environment to which the storage method of the present invention is applied (season and region of storage, etc.) is not particularly limited. For example, even if there is no plan to store the refractory bricks in a high-temperature, high-humidity environment, a package 1 containing refractory bricks 2 together with a desiccant 3 may be manufactured to prevent crack formation. For example, the present invention is also applicable to a package 1 manufactured from autumn to winter and stored until spring without going through the high-temperature, high-humidity rainy season to summer.

[0055] With regard to other configurations, the embodiments disclosed herein are illustrative in all respects, and it should be understood that the scope of the present invention is not limited thereto. Those skilled in the art will readily understand that modifications can be made as appropriate without departing from the spirit of the invention. Therefore, other embodiments modified without departing from the spirit of the invention are naturally included within the scope of the present invention. [Examples]

[0056] The present invention will be described in more detail below with reference to specific examples. However, the present invention is not limited in any way to the examples shown below.

[0057] (Example 1) <Preparation of refractory brick packaging> As refractory bricks, approximately 1 ton (approximately 16 kg per brick x 64 bricks) of magnesia-spinel bricks intended for lining cement rotary kilns were arranged on a wooden pallet and stacked vertically. These were then packaged together with 400 g of allofen (Shinagawa General Co., Ltd.'s "Secard OW 200G (product name)"), a clay mineral-based desiccant (Example 1), using LLDPE (linear low-density polyethylene) stretch film to obtain package 1. "Secard OW 200G (product name)" is a product in which 200 g of "Secard OW (product name)" is individually packaged in a bag-shaped nonwoven fabric. Two of these were placed between rows of refractory bricks.

[0058] <Evaluation of packaging> The packaging prepared as described above was loaded onto pallets and stored for one year from March at a factory on Honshu, Japan (inland area of ​​the Chubu region, average annual temperature 4°C to 28°C, average annual relative humidity 65% ​​to 75%), and the following evaluation was conducted. The one-year storage period for packaging 1 includes a first storage period of approximately 80 days (June to September) where the average daily temperature is 25°C or higher and the average daily relative humidity is particularly 70% or higher, and a second storage period of approximately 35 days (October to December) where the average daily temperature is lower than that of the first storage period and the average difference between the daily maximum and minimum temperatures is 10°C or higher.

[0059] (Measurement of relative humidity inside the packaging) The relative humidity inside the packaging was automatically measured every hour using a thermometer / hygrometer (Fujita Electric Works KT-255U, a stick-type temperature / humidity data logger with display). The average relative humidity was also calculated for 12 measurement days: 30, 60, 90, 120, 150, 180, 210, 240, 270, 300, 330, and 360 days after the packaging was manufactured. The average relative humidity was the average of 24 measurements taken every hour on each measurement day (1 day).

[0060] (The difference between the maximum and minimum daily relative humidity inside the packaging) The difference between the maximum and minimum relative humidity values ​​was calculated for each measurement day, based on 24 measurements taken.

[0061] (Presence or absence of cracks in the firebricks) The packaging was unpacked 5 days after the completion of the 360-day relative humidity measurement, and the presence or absence of cracks in the firebricks was visually inspected. The storage period for the packaging was 1 year.

[0062] (Example 2) The procedure was the same as in Example 1, except that "Secard OW 200G (product name)" (1 bag, 200g) and 200g of lime were used as desiccants. (Comparative Example 1) The procedure was the same as in Example 1, except that 400g of lime was used as a drying agent.

[0063] Table 1 shows the measurement results for the examples and comparative examples, along with the test conditions.

[0064] [Table 1]

[0065] As shown in Table 1, Comparative Example 1, which used only lime, an irreversible chemical reaction type desiccant, as the desiccant, maintained an average relative humidity that was generally lower than that of Example 1. However, Comparative Example 1 had a larger difference between the maximum and minimum daily relative humidity values ​​than Example 1, and the daily fluctuation range of the average relative humidity was larger. In Comparative Example 1, cracks were observed in some of the refractory bricks after one year of storage.

[0066] In Example 1, where only allophane, a clay mineral-based desiccant, was used as a desiccant, the average relative humidity inside the packaging exceeded 70% after 90 days, and the relative humidity remained high thereafter, but overall the daily fluctuation in relative humidity was small. In Example 1, no cracks were observed in the refractory bricks after one year of storage.

[0067] In Example 2, where allophane and lime were used as desiccants, the relative humidity inside the packaging tended to be lower than in Example 1 throughout the entire period. Although the daily fluctuation in relative humidity tended to be larger than in Example 1, the fluctuation was kept smaller than in Comparative Example 1, and no cracks were observed in the refractory bricks after one year of storage.

[0068] From these results, it was confirmed that by packaging basic refractory bricks with a physically adsorbent type desiccant that can adsorb and release moisture at room temperature, fluctuations in relative humidity within the packaging are reduced, thereby suppressing the occurrence of cracks in the basic refractory bricks. [Industrial applicability]

[0069] The present invention can be used, for example, as a packaging and storage method for refractory bricks used for lining cement rotary kilns and the like. [Explanation of Symbols]

[0070] 1: Packaging 2: Firebricks 3: Dry material 4: Packaging material 5: Palette

Claims

1. A package of firebricks, in which firebricks are packed together with a desiccant in packaging material, The aforementioned refractory brick is a basic refractory brick. A refractory brick packaging comprising one or more desiccants selected from the group consisting of clay minerals, zeolites, activated carbon, and type B silica gel.

2. The refractory brick packaging according to claim 1, wherein the basic refractory brick is a magnesia brick.

3. The refractory brick packaging according to claim 2, wherein the magnesia brick is a magnesia-spinel brick.

4. The refractory brick packaging according to any one of claims 1 to 3, wherein the drying agent comprises at least clay minerals.

5. The refractory brick packaging according to claim 4, wherein the clay mineral comprises at least allophane.

6. A method for storing refractory bricks, comprising packaging the refractory bricks together with a desiccant in packaging material to create a package, and then storing the package, The aforementioned refractory brick is a basic refractory brick. A method for storing refractory bricks, wherein the desiccant comprises one or more desiccants selected from the group consisting of clay minerals, zeolites, activated carbon, and type B silica gel.

7. The method for storing refractory bricks according to claim 6, further comprising storing the packaged material in a place where the average annual temperature is 15 degrees Celsius or higher and the average annual relative humidity is 60% or higher.

8. The method for storing refractory bricks according to claim 6, further comprising storing the packaged material for a period of time during which the average daily temperature is above a predetermined threshold and the average daily relative humidity is above a predetermined threshold.

9. A method for storing refractory bricks according to any one of claims 6 to 8, comprising storing the packaged material for a period of time during which the average difference between the maximum and minimum temperatures of a day is equal to or greater than a predetermined threshold.

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