JPH0971484A - Apparatus for hardening for producing ceramic product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for hardening, used for producing a ceramic product and capable of passing a gas through the interior of a compact formed so as to produce the ceramic product and hardening the whole including the interior of the compact and enabling the handling thereof. SOLUTION: This apparatus for hardening used for producing a ceramic product comprises a combination of a pallet 22 having plural through-holes 21, a gas filling capsule 25, attached to the pallet 22 in a hermetically sealed state so as to enable the free installation and removal therefrom and having at least one gas filling port 24, a drain capsule 25, attached to the pallet 22 in a hermetically sealed state so as to enable the free installation and removal therefrom and having at least one gas discharging port 26 and a through-hole closing device 30 having a hole closing member 31 for closing the through-holes 21 unclosed with the compact 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a curing apparatus for manufacturing ceramic products, and more particularly, to a gas passing through a molded product molded for manufacturing a ceramic product, including the inside of the molded product. The present invention relates to a curing device for manufacturing a ceramic product that cures the whole and can handle it.

[0002]

2. Description of the Related Art Recently, for example, waste concrete cement,
A large amount of industrial waste is generated from industries other than the ceramic industry, such as blast furnace slag, municipal waste, or sewage sludge molten slag, and there is a strong demand for application development that makes effective use of these industrial wastes. .

Already, these industrial wastes are used as raw materials for aggregates to manufacture porous ceramics, and are used as permeable tiles, permeable blocks, permeable cylinders, permeable casings in pavements, parking lots, entrances, indoors, etc. It is widely used as a diffuser plate, a cylinder, a filter material, an adsorbent material, a sound absorbing material, a fungal bed material, a planting block, etc. in an enclosed water area such as a culture pond.

Conventionally, in order to fire a ceramic product such as a porous ceramic, the raw material aggregate is coated with the surface of the aggregate in a liquid state, the aggregate is temporarily bonded, and the kneading is performed during handling or during firing. Molded into a predetermined shape a mixture of a binder, which is generally called a primary binder to prevent deformation or shape cracking of the material, and a binder, which is generally called a secondary binder for melting and binding aggregate during firing. Then, this is baked.

In the past, for example, porous ceramics are made of pearlite, obsidian, hirucite, shirasu, etc. which are heat-foamed porous pearlite and vermiculite, foamed shirasu, glass, alumina, fly ash, silica sand, shale, etc. It was produced as a molded body in which inorganic foam-containing particles such as glass balloons and shirasu ball, which were fine hollow bodies, were used as an aggregate and were bound with a binder.

A method for producing a lightweight building board by kneading cement and water into a mixture of foamed particles such as pearlite and shirasu balloon and inorganic fiber and molding the mixture by a method such as a papermaking method or a mold casting method (JP-A-48). -59114) or a method using a silicate or the like such as water glass and an appropriate curing agent as a binder (JP-A-51-135924).

Further, a method of using an organic resin alone as a binder (JP-A-48-32127) or a method of using it together with an inorganic binder such as water glass or silica gel (JP-A-1-290572). ) Is also proposed.

Similarly, a method of foaming and curing using a urethane resin to solidify the inorganic foam-containing particles (Japanese Patent Laid-Open No. 61-61).
No. 2016680) is also well known to those skilled in the art.

Recently, a method for producing a porous fired body by effectively utilizing industrial waste has been proposed. For example, JP-A-61-2
In 19776, a method is disclosed in which silica sand sludge discarded as industrial waste is used as an aggregate, and water and a foaming agent are added to this to knead to form a slurry, which is then shaped into a shape and then fired. ing.

Further, in Japanese Unexamined Patent Publication No. 63-176380, a crushed material of a ceramic waste material discarded as an industrial waste is used as an aggregate, and a crushed material of a glass-based waste material discarded as an industrial waste is secondary to this. The mixture is added as a binder, and a liquid primary binder and water are added and kneaded to form a kneaded product, which is then molded into a desired shape and dimension, and then a gas having a predetermined pressure is blown to the molded product to primarily cure its surface, followed by firing. A method of doing so is disclosed.

[0011]

However, in the method for producing a porous fired body described in, for example, JP-A-61-219776, for example, since the molded article after molding is brittle, dehydration for enabling handling, There has been a problem that a complicated process of drying is required, and that an extremely long treatment is required, so that the productivity is poor and the manufacturing cost is high.

In the method for producing a porous ceramic described in JP-A-63-176380, since a gas (mainly carbon dioxide gas) is blown onto the surface of the molded article to cure it, if the gas treatment time is short, for example. , As shown by the arrow in FIG.
The gas only comes into contact with the surface of the molded product,
And the floor surface of the molded product that comes into contact with the pallet on which the molded product is placed does not contact. That is, the inside and bottom of the molded product cannot be cured.

Therefore, the molded product is too brittle to be handled, or the molded product is unevenly cured to lose its shape or deform, the dimensional accuracy of the molded product is deteriorated, and cracks (scratches) are generated. There is a problem that the yield of the products is deteriorated due to the occurrence of the occurrence, and there is a problem that the production efficiency is lowered and the manufacturing cost is increased.

In this method, if the surface of the molded product is blown with a gas for a long period of time to carry out the curing treatment, the production efficiency of the product is deteriorated, and the consumption of expensive carbon dioxide gas is increased to increase the cost. In addition, if the shape of the molded product is large, it is only possible to cure the surface of the molded product even if it is sprayed for a long time. I can't let you do it. That is, there is a problem that a large-sized porous ceramic cannot be manufactured when the molded product after curing is too brittle to be handled.

The present invention has been made through intensive studies and invented in view of such circumstances, and the problem to be solved is to solve the above problems, inconveniences and problems, and the purpose thereof is to solve the problems. , Proposing a curing device for manufacturing a ceramic product that allows gas to pass through the inside of a molded product molded to manufacture a ceramic product, cures the entire body including the inside of the molded product, and enables handling thereof, This makes it possible to manufacture a large-scale porous ceramic and to efficiently mass-produce the porous ceramic at a low cost.

[0016]

[Means for Solving the Problems] The means adopted by the present invention for solving the above-mentioned problems are as follows. The invention of claim 1 is that "gas is passed through the inside of a molded body molded to manufacture a ceramic product. Curing device for manufacturing ceramic products that cures the entire body including the inside of the molded body so that it can be handled. "
Is the gist.

Next, the invention of claim 2 is a "curing device for manufacturing a ceramic product for allowing a gas to act on a molded product molded for manufacturing a ceramic product to cure the molded product so as to be handled. A pallet having a plurality of through-holes, a gas injection capsule detachably attached to the pallet and sealingly attached to the pallet, and at least one gas detachably attached to the pallet and sealingly attached to the pallet. A drain capsule having a discharge port, and a curing device configured to allow the gas to pass through the inside of the molded body placed on the pallet, and the inside of the molded body by the action of the gas. The gist is a curing device for manufacturing ceramic products, which has a feature of "curing the whole including".

Next, the invention of claim 3 is a "curing device for manufacturing a ceramic product for allowing gas to act on a molded product molded for manufacturing a ceramic product to cure the molded product so that it can be handled. A pallet having a plurality of through-holes, a gas injection capsule detachably attached to the pallet and sealingly attached to the pallet, and at least one gas detachably attached to the pallet and sealingly attached to the pallet. A curing device configured to include a drain capsule having a discharge port, and a through-hole closing device having a hole closing member for closing the through-hole that is not closed by the molded body, the curing device comprising: Curing for manufacturing ceramic products characterized by "passing the gas through the inside and curing the entire body including the inside of the molded body by the action of this gas" The location is for its gist.

Next, the invention of claim 4 is that, in the "curing device for manufacturing ceramic products, a piston device for vertically moving both of the upper surface of the gas injection capsule and the lower surface of the drain capsule is provided. The ceramics according to claim 2 or 3, characterized in that the pallet conveyed from the press machine is placed between the gas injection capsule and the drain capsule. A hardening apparatus for manufacturing a product is characterized in that the invention of claim 5 is "a hardening apparatus for manufacturing a ceramic product is provided with heating means for preheating a gas injected into the gas injection capsule". A curing device for manufacturing a ceramic product according to any one of claims 1 to 4 is included in the gist of the invention.

Next, the invention of claim 6 is, "In the curing device for manufacturing the ceramic product, the molded product for manufacturing the ceramic product is prepared by mixing water glass as a binder with a porous aggregate. The gas is either carbon dioxide gas or a mixed gas containing carbon dioxide gas. "
A curing device for manufacturing a ceramic product according to any one of
This is the summary.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in more detail below.

First, the aggregate referred to here is an inorganic aggregate composed of an inorganic substance. As the inorganic aggregate, pearlite,
Porous pearlite or vermiculite, which is made by heating and foaming obsidian, hirucite, shirasu, etc., natural hollow balloons made of glass, alumina, fly ash, silica sand, shale, etc. Any one kind or a mixture of two or more kinds of the inorganic bubble-containing particles can be used, and natural stones other than sedimentary rock, which are less likely to cause cracks during the subsequent firing, are preferable.

As aggregates, for example, tableware, kitchenware, sanitaryware, defective products such as insulators, and ceramic waste materials such as waste materials are crushed into fine particles, generally called crushing. Objects, concrete cement crushed concrete cement generated by demolition of structures and buildings, crushed into fine particles, waste foundry sand crushed into fine particles, crushed waste generated during clay refining Fine particle shape such as crushed material generally called Kira, crushed waste generated by metal refining to finely crushed material generally called slag, crushed waste foundry sand to finely crushed material The waste of can also be used.

Furthermore, as the aggregate, two or more kinds selected from the group of the natural stones may be mixed, and two or more kinds selected from the group consisting of the powdery and granular wastes may be mixed. Alternatively, one or more kinds selected from the group of natural stones and one or more kinds selected from the group consisting of the waste in the form of powder and granules may be used in combination.

Fine aggregates generally called calcined aggregates and aggregates such as crushed fine aggregates obtained by crushing incinerated ash are generally included in the aggregates because they have been already subjected to the firing treatment. Since water of crystallization is not contained, for example, so-called cutting is good and the secondary shrinkage is small, which is preferable in that the burden of drying can be reduced and energy efficiency can be improved.

The primary binder referred to in the present invention is a liquid,
The purpose is to coat the surface of the aggregate and to temporarily bond the aggregate to prevent the kneaded product from being deformed or broken during handling or firing. Generally, water glass is used. Alternatively, an organic material typified by ethyl silicate or phenol / isocyanate can be used, and it is preferable to add 2 to 25% to the aggregate 100.

As the primary binder, a sizing agent typified by carboxymethyl cellulose or starch can be used.

Next, the secondary binder referred to in the present invention is
Glass powder such as clay, natural stone, or waste glass product such as plate glass or glass container, which is used to obtain a porous ceramic having a predetermined porosity and mechanical strength by melting and binding aggregate during firing. It is also possible to use a powdery crushed material obtained by crushing glass-based waste materials of enamel products. In order to minimize the strain generated in the aggregate and the binder during firing, it is preferable that the thermal expansion coefficient of the secondary binder be the same as that of the aggregate. The secondary binder melts at the time of firing to bond the aggregates together.However, in order to ensure that this binding is performed uniformly and that the melting time at firing does not take a long time to increase the energy cost, The diameter is preferably 1.0 mm or less.

A method for manufacturing a molded body for manufacturing a ceramic product according to the present invention will be described with reference to FIG. 1, which schematically shows the manufacturing process.

First, as shown in FIGS. 1 (a) and 1 (b), is the secondary binder 3 mixed little by little with the mixture of the porous inorganic aggregate 2 and the primary binder 4? Alternatively, a liquid primary binder (water glass) is added to the mixture of the porous inorganic aggregate 2 and the secondary binder 3.
Mix 4 while making a shower little by little.

Aggregate 2, primary binder 4 and secondary binder 3
When these three are mixed at the same time, especially since the secondary binder of fine powder does not aggregate and cannot be uniformly dispersed, it adheres to the mold at the time of molding or foams at the time of firing to yield. Becomes worse.

When producing a colored porous ceramic, an appropriate amount of inorganic pigment is added during this mixing process.

Next, as shown in FIGS. 1 (c) to 1 (e), a fixing frame 5 having a space for molding into a predetermined shape and a large number of fine through holes 6 are provided and fixed. A mold space consisting of a pallet 7 detachably provided on the lower surface of the frame 5 is filled with a predetermined amount of a mixture obtained by uniformly mixing the three members, and is molded. The body is released from the pallet 7 together with the body while being placed on the pallet 7.

It should be noted that it is preferable to use a vibrator to fill the mixture while vibrating it while filling the mixture into the mold, because the density can be kept uniform.

Next, the molded body 1 after press molding is released from the mold while being placed on the pallet 7, and the whole body including the inside and the floor surface of the molded body is baked before firing. Is uniformly cured (FIG. 2 (f)), and it is necessary to perform primary curing in order to facilitate handling and prevent uneven curing of the molded product.

FIG. 2 is a front view showing a curing device 10 according to an embodiment of the present invention. To explain based on this, this curing device 10 has a pallet 12 having a large number of through holes 11 formed therein. And at least one gas injection port 1 provided on the upper surface of the pallet 12 via a hermetically sealing material 13.
Gas injection capsule 15 having 4 and said pallet 12
And a drain capsule 17 having at least one gas discharge port 16 provided on the lower surface thereof via a hermetic sealing material 13 and substantially configured.

Through holes 11 formed in the pallet 12
Arrangement position, number, size, etc. of material, type 1
Since it depends on the size etc., it is not possible to say unequivocally, the larger the number, the better, but it is generally 1 per 1 to 5 cm ² , and the desired pitch width in the front-rear direction and the left-right direction. is there. The through holes 11 are preferably straight holes because both sides of the pallet can be used.

The method of using the curing device 10 will be described. As shown in FIG. 2, the molded body 1 is placed on the upper surface of the through hole 11 between the gas injection capsule 15 and the drain capsule 17. The pallet 12 in which all of the through holes 11 are closed is detachably attached in a hermetically sealed state with the sealing material 13 interposed therebetween.

Air cylinders 18 indicated by dotted lines are attached to the upper surface of the gas injection capsule 15 and the lower surface of the drain capsule 17, respectively.
Both 5 and the drain capsule 17 are pressed against the pallet 12 so that the insides of both capsules 15 and 17 are completely shielded from the outside air and the sealed state inside both capsules is maintained. That is, in other words, the pallet 12 defines the two chambers of the gas injection capsule 15 and the drain capsule 17 and is connected to each other through the through hole 11.

A gas injection port 14 for supplying carbon dioxide gas into the gas injection capsule 15 is provided on the upper surface of the gas injection capsule 15, and carbon dioxide gas is supplied into the gas injection capsule 15 through the gas injection port 14. And a gas outlet 16 for exhausting the inside of the drain capsule 17 is provided on the lower surface of the drain capsule 17.
And a vacuum suction means 19 connected to the gas outlet 16 with a blower interposed.

Therefore, when the decompression / suction means 19 is operated, the inside of the drain capsule 17 is first evacuated to a decompressed state, and the inside of the gas injection capsule 15 is evacuated through the through hole 11 so that the inside of the drain capsule 17 is The inside of the gas injection capsule 15 is in a predetermined reduced pressure state adjusted by the blower.

If this state is maintained, the water contained in the molded body will continue to move toward the vacuum suction means, so that the molded body can be dried and cured more quickly. be able to.

Then, when a slightly pressurized carbon dioxide gas is injected into the gas injection capsule 15 in the depressurized state, the carbon dioxide gas diffuses into the gas injection capsule 15 all at once, and in the drawing, an arrow mark is added. As indicated by the broken line, the molded body 1 moves from the surface toward the through hole 11 through the inside thereof. And the through hole 11
The carbon dioxide gas that has passed through is quickly exhausted from the gas outlet 16 provided in the drain capsule 17. That is, the carbon dioxide gas injected from the gas injection port 14 is supplied not only to the surface of the molded body 1 but also to the inside of the molded body 1 and the pallet 1.
It is possible to make uniform contact with the bottom surface of the molded body 1 that is in close contact with 2 in a very short time.

That is, at this time, if water glass is uniformly mixed as a primary binder in the molded product, the water glass reacts with carbon dioxide gas as shown in the following chemical formula to form a substance called silica gel. As a result, the adjacent aggregates can be bonded to each other via silica gel. That is, not only the surface of the molded body that was fragile and could not be handled, but also the inside and the bottom of the molded body were uniformly and quickly cured without uneven curing (generally called primary curing), and this was handled. It can be possible.

Na ₂ O.mSiO _2. (Mn + x) H ₂ O
+ CO ₂ → Na ₂ CO ₃ · xH ₂ O + m (SiO
₂・ nH ₂ O)

It should be noted that a mixed gas containing carbon dioxide gas may be used instead of the carbon dioxide gas, and examples of the mixed gas containing carbon dioxide gas include combustion exhaust gas.

In the curing apparatus 10 for manufacturing the ceramic products, as shown by the phantom line in FIG. 2, air for moving them up and down on both the upper surface of the gas injection capsule 15 and the lower surface of the drain capsule 17. Since the cylinder 18 can be attached and the gas injection capsule 15 and the pallet 12 can be pressure-bonded to each other and the drain capsule 17 and the pallet 12 can be pressure-adhered to each other, the gas is injected between the gas injection capsule 15 and the pallet 12. , And the leakage between the drain capsule 17 and the pallet 12 can be completely avoided, and the pallet 12 on which the molded body 1 is placed can be quickly taken in and out, which is extremely preferable.

Therefore, according to this apparatus, even if the molded body is large, it can be cured quickly, simply and reliably to the extent that it can be handled. If carbon dioxide gas that has been heated in advance is injected, the consumption of carbon dioxide gas can be reduced and the curing time can be shortened.

Then, the cured molded body (green) 1
Is fired to obtain a porous ceramic. The green may be fired using a tunnel kiln or a roller hearth kiln.

The firing temperature is determined in consideration of the heat resistance of the aggregate and the like, but is usually in the range of 70 to 1300 ° C. The firing time is about 30 minutes to 72 hours, although it varies depending on the type of aggregate and the size of the molded body. When a fired product that has been fired is used as the aggregate, a holding time at the firing temperature of 10 minutes to 180 minutes is sufficient.

Next, FIG. 3 is a front view of a curing device 20 showing another embodiment of the present invention.

As shown in FIG. 3, in the curing device 20 for manufacturing ceramic products, a pallet 22 having a large number of through holes 21 formed therein, and a hermetic sealing material 23 on the upper surface of the pallet 22.
A gas injecting capsule 25 having at least one gas injecting port 24 and a drain capsule 27 having at least one gas injecting port 26 provided on the lower surface of the pallet 22 via a hermetic sealing material 23; The through hole 21 provided in the drain capsule 27 and not blocked by the molded body 1 placed on the upper surface of the pallet 22.
at least one hole closing member 3 for closing all of a
And a through-hole closing device 30 having the above-described structure 1. The configuration is substantially the same as that of the curing device 10 shown in FIG. 2 except that the through-hole closing device 30 is attached. Is.

Explaining the through-hole closing device 30,
As shown in FIG. 4, the through-hole closing device 30 includes a punching metal 32 having a large number of holes, leg portions 33 attached to both sides of the lower surface of the punching metal 32, and an upper surface of the punching metal 32. In addition, at least one or more non-air-permeable hole closing member 31 is used. As a material of the non-air-permeable hole closing member 31, an elastic body such as sponge rubber is preferable.

The non-air-permeable hole closing member 31 is formed in a predetermined shape so as to close all the other through holes 21 which are not closed by the molded body 1 placed on the pallet 22, and the pallet 2 is formed.
It is sandwiched and pressure-bonded between the lower surface of 2 and the upper surface of the support (punching metal 32) to prevent the gas from passing through the through hole 21.

For example, as shown in FIG. 5, a pallet 22 (430 mm × 500 mm) having a through hole 21 is formed.
In this case, as shown in FIGS. 5 (a) to 5 (c), it is extremely convenient because it is possible to deal with several types of molded bodies 1 having different sizes and shapes. In FIG. 5, the molded body 1 is shown by a broken line, and the non-air-permeable hole closing member 31 is shown by a two-dot broken line.

In each of the above-described hardening apparatuses 10 and 20 for manufacturing ceramic products, heating means for heating the gas is attached to the gas injection capsule 15 before the gas is injected into the gas injection capsule 15. By injecting a high temperature gas into the molded body, the high temperature gas can be passed through the inside of the molded body, whereby the entire body including the inside of the molded body can be dried and cured more quickly and reliably.

Although the typical embodiment of the present invention has been described above, various other embodiments can be adopted. For example, a gas injection capsule on the lower surface of the pallet,
Then, even if the drain capsule is attached to the upper surface of the pallet and the gas is made to flow from the lower side to the upper side, the same action and effect as above can be obtained.

When the colored porous ceramic is produced, the glaze may be applied at the green stage, and when a multilayer product having different densities is manufactured, preferably before the firing, the green stage is applied. Then, aggregate particles having different densities suspended in, for example, water or an organic solvent may be applied to the surface, sprayed, or immersed in the suspension. This is because the green itself has a self-water supply property, so that the suspension solvent penetrates and the base particles are captured on the surface. Therefore, a multilayer structure can be easily achieved.

[0059]

As described above, when the porous ceramic is fired by using the curing apparatus for manufacturing ceramic products of the present invention, gas (mainly carbon dioxide) is formed on the surface of the molded body as in the conventional case. Unlike the case where (gas) is sprayed and only the surface is primary cured (the interior is not primary cured), the interior of the molded body can be firmly cured in a short time, so even if the carbon dioxide treatment time is shortened. It can be cured to the extent that it can be handled sufficiently, and there is no uneven curing in the molded product, so that it does not lose its shape or become deformed, the dimensional accuracy of the molded product deteriorates, or cracks (scratches) occur. The product yield and the production efficiency can be improved, and the manufacturing cost can be further reduced.

Further, since cerbene or the like can be used as the aggregate and a crushed material of a glass-based waste material can be used as the secondary binder, it is excellent in mechanical strength and is a porous ceramic whose porosity and pore diameter are freely adjusted. Can be easily manufactured without the need for a dehydration / drying step, and the baking time can be shortened. Therefore, there is an excellent effect that mass production can be performed at low cost.

[Brief description of drawings]

FIG. 1 is an explanatory view schematically showing steps of a method for producing a porous ceramic of the present invention.

FIG. 2 is a front view showing a curing device according to one embodiment of the present invention.

FIG. 3 is a front view showing a curing device according to another embodiment of the present invention.

FIG. 4 is a perspective view showing a curing device equipped with a through hole closing device according to the present invention.

FIG. 5 is an explanatory view showing that one pallet having a through hole formed therein can cope with molded articles having different sizes and shapes, and the press-molded article is a broken line. The hole closing members are respectively indicated by two-dot broken lines.

FIG. 6 is a schematic diagram for explaining a conventional curing method for curing a molded product.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Molded body 2 ... Porous inorganic aggregate 3 ... Primary binder 4 ... Secondary binder 5 ... Fixing frame 6 ... Through hole 7 ... Pallet 10 ... Curing device 11 ... Through hole 12 ... Pallet 13 ... Sealing sealing material 14 ... Gas injection port 15 ... Gas injection capsule 16 ... Gas discharge port 17 ... Drain capsule 18 ... Air cylinder 19 ... Decompression suction means 20 ... Curing device 21 ... Through hole 22 ... Pallet 23 ... Sealing sealing material 24 ... Gas injection port 25 ... Gas Injection capsule 26 ... Gas discharge port 27 ... Drain capsule 28 ... Air cylinder 29 ... Decompression suction means 30 ... Through hole closing device 31 ... Hole closing member 32 ... Punching metal 33 ... Leg 50 ... Conventional curing device

Claims (6)

[Claims] 1. A curing device for manufacturing a ceramic product, wherein a gas is passed through a molded product molded to manufacture a ceramic product, and the entire body including the inside of the molded product is cured and can be handled. . 2. A curing device for manufacturing a ceramic product, wherein a molded product molded for manufacturing a ceramic product is acted on by a gas to cure the molded product so that it can be handled, and having a plurality of through holes. A pallet, a gas injection capsule that is detachably attached to the pallet and has at least one gas injection port, and a drain capsule that is detachably attached to the pallet and has at least one gas discharge port,
A curing apparatus configured to include, wherein the gas is allowed to pass through the inside of the molded body placed on the pallet, and the entire body including the inside of the molded body is cured by the action of the gas. Curing equipment for manufacturing ceramic products. 3. A curing device for manufacturing a ceramic product, wherein a gas is applied to a molded product molded to manufacture a ceramic product to cure the molded product so that it can be handled, and a pallet having a plurality of through holes. A gas injection capsule detachably and hermetically attached to the pallet and having at least one gas inlet; a drain capsule detachably attachable to the pallet and at least one gas outlet; A through-hole closing device having a hole closing member for closing the through hole that is not closed by a molded body, and a curing device configured to include, passing the gas inside the molded body, A curing apparatus for manufacturing a ceramic product, which cures the entire body including the inside of the molded body by the action of gas. 4. A hardening device for manufacturing a ceramic product, wherein both the gas injection capsule and the drain capsule are provided with a piston device for moving them up and down, and the molded body is placed on the press machine. The curing apparatus for manufacturing a ceramic product according to claim 2, wherein the pallet transported from the above is sandwiched between the gas injection capsule and the drain capsule. 5. The curing device for manufacturing a ceramic product is provided with a heating unit that preheats the gas injected into the gas injection capsule.
4. A curing device for manufacturing a ceramic product according to any one of 4 above. 6. The curing device for manufacturing ceramic products, wherein the molded body for manufacturing ceramic products is made of porous aggregate mixed with water glass as a binder, and the gas is carbon dioxide or carbon dioxide. The curing apparatus for manufacturing a ceramic product according to claim 1, wherein the curing apparatus is any one of a mixed gas containing a gas.