JPH1033979A - Method of manufacturing humidity control material - Google Patents
Method of manufacturing humidity control materialInfo
- Publication number
- JPH1033979A JPH1033979A JP20876596A JP20876596A JPH1033979A JP H1033979 A JPH1033979 A JP H1033979A JP 20876596 A JP20876596 A JP 20876596A JP 20876596 A JP20876596 A JP 20876596A JP H1033979 A JPH1033979 A JP H1033979A
- Authority
- JP
- Japan
- Prior art keywords
- humidity control
- control material
- powder
- alc
- granule
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000463 material Substances 0.000 title claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000000843 powder Substances 0.000 claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000008187 granular material Substances 0.000 claims abstract description 20
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 17
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 17
- 239000011381 foam concrete Substances 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 6
- 238000010334 sieve classification Methods 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims description 9
- MKTRXTLKNXLULX-UHFFFAOYSA-P pentacalcium;dioxido(oxo)silane;hydron;tetrahydrate Chemical compound [H+].[H+].O.O.O.O.[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O MKTRXTLKNXLULX-UHFFFAOYSA-P 0.000 claims description 9
- 239000013078 crystal Substances 0.000 claims description 5
- 238000010000 carbonizing Methods 0.000 claims 1
- 239000000378 calcium silicate Substances 0.000 abstract description 8
- 229910052918 calcium silicate Inorganic materials 0.000 abstract description 8
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 abstract description 8
- 239000011230 binding agent Substances 0.000 abstract description 7
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 230000035699 permeability Effects 0.000 abstract description 6
- 241000238876 Acari Species 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 17
- 238000005469 granulation Methods 0.000 description 13
- 230000003179 granulation Effects 0.000 description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 9
- 235000012241 calcium silicate Nutrition 0.000 description 9
- 239000007789 gas Substances 0.000 description 9
- 238000010521 absorption reaction Methods 0.000 description 8
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 5
- 239000008188 pellet Substances 0.000 description 5
- 238000007906 compression Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000003795 desorption Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229910021532 Calcite Inorganic materials 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 235000011089 carbon dioxide Nutrition 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000010456 wollastonite Substances 0.000 description 2
- 229910052882 wollastonite Inorganic materials 0.000 description 2
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 241000256602 Isoptera Species 0.000 description 1
- 208000026935 allergic disease Diseases 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000026041 response to humidity Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Drying Of Gases (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、軽量気泡コンクリ
ート（以下ＡＬＣという）の粉体を用いて、これを造粒
物にした後に炭酸化することによる調湿性に優れた調湿
材の製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a humidity control material having excellent humidity control properties by using a lightweight cellular concrete (hereinafter referred to as ALC) powder, granulating the powder, and carbonating the granulated product. It is about.
【０００２】[0002]
【従来の技術】従来から調湿材として次に記載するもの
が知られている。すなわち、ＡＬＣの製造工程で発生す
る不良品やビルの建築中に発生する端材などを粉砕した
ＡＬＣの粉末そのものを調湿材としたもの（特開平６−
９９０６３号公報）、あるいは前記のＡＬＣの粉末を炭
酸ガスで炭酸化させることにより生成されるシリカゲル
などが調湿材として知られている。2. Description of the Related Art The following materials are conventionally known as humidity control materials. That is, ALC powder itself, which is obtained by crushing defective products generated in the ALC manufacturing process or scrap materials generated during building of a building, is used as a humidity control material (Japanese Patent Laid-Open Publication No.
No. 99063) or silica gel produced by carbonating the above-mentioned ALC powder with carbon dioxide is known as a humidity control material.
【０００３】[0003]
【本発明が解決しようとする課題】しかし、上記ＡＬＣ
の粉末自体においては、それを炭酸化したものと比べ比
表面積が小さいため吸放湿量が少なく、また使用中に炭
酸化が進行すると、トバモライト結晶が反応して水が放
出され、調湿材としての機能は低いものであった。However, the above-mentioned ALC
The powder itself has a smaller specific surface area than the carbonized version of it, so it absorbs and desorbs less.If carbonation proceeds during use, tobermorite crystals react to release water, and the moisture conditioning material Function was low.
【０００４】さらにＡＬＣ粉末を炭酸化したものにおい
ても、炭酸化によって比表面積は増大するが、粉末であ
ることにより透湿能力が低く、調湿機能は十分とは言え
なかった。また、これを床等に散布した場合に、風で粉
末が舞い上がったり移動したりして取り扱い上も不利な
面が多かった。そこで本発明は、これらの問題を解決し
た優れた調湿機能を有する調湿材の製造方法を提供する
ことを目的とする。[0004] Further, even in the case where ALC powder is carbonated, the specific surface area is increased by carbonation, but since the powder is used, the moisture permeability is low and the humidity control function cannot be said to be sufficient. In addition, when this is sprayed on a floor or the like, there are many disadvantages in handling because the powder soars or moves by wind. Therefore, an object of the present invention is to provide a method for manufacturing a humidity control material having an excellent humidity control function that solves these problems.
【０００５】[0005]
【課題を解決するための手段】上記の課題を解決するた
めに、本発明者は種々検討した結果、ケイ酸カルシウム
のうち、トバモライトを炭酸化した場合には、非晶質ケ
イ酸カルシウム水和物（一般にＣＳＨと呼ばれる）、ゾ
ノライト、ウォラストナイト等の他のケイ酸カルシウム
の炭酸化に比べて比表面積が増大することを見いだし、
本発明に至った。すなわち、本発明は、トバモライトを
主成分とする軽量気泡コンクリートの粉体と水との混合
物を造粒し、次いでその造粒物を炭酸ガスで炭酸化・硬
化させた後、乾燥させる調湿材の製造方法を要旨とす
る。In order to solve the above problems, the present inventors have conducted various studies. As a result, when tobermorite was carbonated out of calcium silicate, amorphous calcium silicate hydrate was obtained. Found that the specific surface area increases as compared to the carbonation of other calcium silicates such as products (commonly called CSH), zonolite, wollastonite, etc.
The present invention has been reached. That is, the present invention provides a humidity control material in which a mixture of powder of lightweight cellular concrete containing tobermorite as a main component and water is granulated, and then the granulated product is carbonated and hardened with carbon dioxide gas, and then dried. The gist is the manufacturing method of
【０００６】以下に本発明の作用を説明する。一般に、
ケイ酸カルシウムは水の存在下で炭酸ガスと接触すると
カルシウムイオンを放出し、炭酸カルシウムを生成する
と同時に、もとのケイ酸カルシウムの形状をほぼ残した
状態で比表面積の大きなシリカゲル（シリカスケルトン
ゲンと呼ぶ）を生成する。The operation of the present invention will be described below. In general,
Calcium silicate releases calcium ions when it comes in contact with carbon dioxide in the presence of water to produce calcium carbonate. At the same time, silica gel with a large specific surface area (silica skeleton ).
【０００７】ＣＨＳ、ゾノライト、ウォラストナイトな
どのケイ酸カルシウムは、常温常圧近傍での炭酸化で
は、もとの比表面積より減少する。これは生成する炭酸
カルシウムがほぼカルサイトという径の大きな結晶をシ
リカスケルトンゲン表面に析出するからと考えられる。
一方、トバモライトの炭酸化では比表面積が増大する
が、その理由は、カルサイトとともに微細な結晶である
バテライトを析出するためと考えられる。[0007] Calcium silicates such as CHS, zonolite, and wollastonite decrease in their specific surface area during carbonation near normal temperature and normal pressure. This is considered to be because the generated calcium carbonate precipitates a crystal having a large diameter of substantially calcite on the surface of silica skeleton.
On the other hand, the specific surface area is increased by carbonation of tobermorite, which is considered to be due to precipitation of vaterite, which is fine crystals, together with calcite.
【０００８】ここでＡＬＣを代表とする軽量気泡コンク
リート内のケイ酸カルシウムの主成分はトバモライトで
あるため、ＡＬＣの粉体を炭酸化することによって比表
面積を増大させた吸放湿量の優れた物質を得ることがで
きる。しかも、比表面積の増大した物質を、さらに調湿
機能としての透湿能力を高くするためには、粉体を粒状
にすることがさらに有効な手段となる。[0008] Here, since the main component of calcium silicate in lightweight cellular concrete represented by ALC is tobermorite, the specific surface area is increased by carbonating the ALC powder to provide an excellent moisture absorption / release capacity. Substance can be obtained. Moreover, in order to further increase the moisture permeability of a substance having an increased specific surface area as a humidity control function, granulation of powder is a more effective means.
【０００９】一般にケイ酸カルシウムの粉体から炭酸化
した造粒物を得る場合、最初に粉体を炭酸化し、しかる
後に造粒物を造ろうとすると、造粒物の硬化強度が弱く
なり粒状態を保つことが難しくなる。また、硬化強度を
さらに増加させるために水以外のバインダーを加えて造
粒すると、一般に、このバインダーのため造粒物の比表
面積が小さくなってしまい十分な吸放湿量が得られなく
なって本発明の目的が十分に達成されなくなる。In general, when obtaining a carbonated granulated product from calcium silicate powder, if the powder is first carbonated and then the granulated product is to be formed, the hardening strength of the granulated product becomes weak and the granulated product becomes granular. Is difficult to keep. In addition, if a binder other than water is added for granulation to further increase the curing strength, the specific surface area of the granulated material is generally reduced due to the binder, and a sufficient amount of moisture absorption / release cannot be obtained. The object of the invention is not sufficiently achieved.
【００１０】以上のことより、予めケイ酸カルシウムの
粉体と水との混合物を造粒し、しかる後に炭酸化させる
ことが必要となる。しかしながら、一般のモルタル、コ
ンクリート廃材で代表されるケイ酸カルシウム粉体の圧
密から得られた造粒物では、炭酸化によって表面に緻密
層が生成され、その後の材料内部への炭酸ガスの進入を
阻害してしまい、炭酸化が完了するのに非常に長い時間
がかかってしまう。[0010] From the above, it is necessary to granulate a mixture of calcium silicate powder and water in advance and then carbonate the mixture. However, in the case of granules obtained from the compaction of calcium silicate powder represented by general mortar and concrete waste, a dense layer is generated on the surface by carbonation, and carbon dioxide gas enters the interior of the material after that. It will take a very long time to complete the carbonation.
【００１１】ところが、ＡＬＣの粉体は、それ自身が多
孔質であるため、圧密した状態でも、かなりの空隙を有
している。例えば、ＡＬＣの粉体を含水量５０％重量の
状態で、１０ＭＰａの圧力で成形した場合にも、比重
は、０．８〜１．２であり全容積の４５％以上が空隙で
あるため、材料内部まで炭酸化をスムーズに進行させる
ことができる。このように比表面積の大きなシリカスケ
ルトゲンの造粒物を造る点において、ＡＬＣ粉体を使う
ことは非常に有効なことである。However, since the ALC powder itself is porous, it has considerable voids even in a compacted state. For example, when ALC powder is molded at a pressure of 10 MPa in a state of 50% by weight of water content, the specific gravity is 0.8 to 1.2 and 45% or more of the total volume is a void. Carbonation can proceed smoothly to the inside of the material. The use of ALC powder is very effective in producing such a granulated silica skeltonogen having a large specific surface area.
【００１２】以上のことより、ＡＬＣの粉体を素に、比
表面積に影響を与えない水をバインダーとして用いて一
旦造粒物を形成し、しかる後に炭酸化することにより、
非常に比表面積が大きく吸放湿量の大きな調湿材を得る
ことができる。From the above, by using ALC powder as a raw material and water which does not affect the specific surface area as a binder, a granulated substance is once formed, and then carbonized,
A humidity control material having a very large specific surface area and a large amount of moisture absorption / release can be obtained.
【００１３】[0013]
【発明の実施の形態】本発明において使用するＡＬＣの
粉体は、そのＡＬＣを粉砕したものでも、加工時に発生
する切削粉でもかまわない。また、ケイ石等の微細粒子
を多少含んでいてもかまわない。また本発明において
は、粉体中にトバモライト結晶が３０重量％以上含んで
いることが好ましい。これ以下の場合には、炭酸化によ
る硬化が十分でないばかりでなく、得られた調湿材の吸
放湿性も劣るからである。BEST MODE FOR CARRYING OUT THE INVENTION The ALC powder used in the present invention may be pulverized ALC or cutting powder generated during processing. Further, it may contain some fine particles such as silica stone. In the present invention, it is preferable that the powder contains tobermorite crystals in an amount of 30% by weight or more. If the amount is less than this, not only the curing by carbonation is not sufficient, but also the obtained humidity control material has poor moisture absorption / release properties.
【００１４】造粒には、押出し造粒、圧縮造粒、転動造
粒（マルメライザー）などの方法が使用でき、使用する
ＡＬＣ粉体の粉径は、押出し造粒あるいは圧縮造粒では
１μｍ〜５ｍｍ、また、転動造粒では１μｍ〜１ｍｍと
広範囲のものが使用できる。For granulation, methods such as extrusion granulation, compression granulation and tumbling granulation (malmerizer) can be used. The powder diameter of the ALC powder used is 1 μm in extrusion granulation or compression granulation. -5 mm, and in rolling granulation, a wide range of 1 μm-1 mm can be used.
【００１５】また造粒に使用するバインダーとしては、
水を用いる必要がある。ベントナイト等の粘土系バイン
ダは比較的、炭酸化反応を阻害しないことと炭酸化後の
比表面積も大きく保つことが可能なためそれらを添加し
てもかまわない。Further, as a binder used for granulation,
Water must be used. Clay binders such as bentonite may be added because they do not hinder the carbonation reaction and can maintain a large specific surface area after carbonation.
【００１６】バインダーとして使用する水の添加量は、
その製造方法によって異なるが、例えば押し出し造粒お
よび圧縮造粒の場合には、重量部で３０〜６０％程度に
含水量を調節するのが望ましい。The amount of water used as a binder is as follows:
Although it varies depending on the production method, for example, in the case of extrusion granulation and compression granulation, it is desirable to adjust the water content to about 30 to 60% by weight.
【００１７】本発明における造粒物の粒径については、
フルイ分級によって測定した値である。また本発明にお
いては、造粒物の粒径は、２ｍｍ〜３０ｍｍの範囲にす
るのが、取り扱い上より好ましい。造粒物が２ｍｍより
小さいくて粉体に近ずくと透湿能力が下がっていくこと
になり、また３０ｍｍより大きいと取り扱い上不便であ
る。また、造粒物の形状は、円柱、立方体、直方体、
球、楕円あるいは歪なものであっても良い。Regarding the particle size of the granulated product in the present invention,
It is a value measured by sieve classification. In the present invention, the particle size of the granulated product is preferably in the range of 2 mm to 30 mm from the viewpoint of handling. When the granulated material is smaller than 2 mm and approaches the powder, the moisture permeability decreases, and when it is larger than 30 mm, handling is inconvenient. In addition, the shape of the granulated material is a cylinder, a cube, a rectangular parallelepiped,
It may be spherical, elliptical or distorted.
【００１８】造粒物の炭酸化は、水の存在下で促進され
るが、造粒物が湿閏状態、すなわち重量部で３０〜１０
０％の含水量にあるのが最も好ましい。３０重量部％以
下では、炭酸化が遅くなり、一方１００％以上では、造
粒物の強度を保持できなくなる。The carbonation of the granules is promoted in the presence of water, but the granules are in a wet leap state, that is, 30 to 10 parts by weight.
Most preferably it is at a water content of 0%. If it is less than 30% by weight, carbonation is slow, while if it is more than 100%, the strength of the granulated product cannot be maintained.
【００１９】本発明で使用される炭酸ガスの濃度は、高
いほど良く、少なくとも３％以上含んでいるのが、工業
的に製造するには望ましい。また炭酸ガスとしては、市
販の液体二酸化炭素、ドライアイスの他、燃焼ガス、排
気ガス等が使用できる。さらに、反応を促進させるため
に、造粒物を圧力容器に入れて加圧炭酸ガスを送入した
り、炭酸ガスを送入する前に真空ポンプ等で脱気してお
くのも有効な方法である。例えば、３気圧の加圧炭酸ガ
スを使用すると、０．５〜３時間で反応が終了する。The concentration of carbon dioxide used in the present invention is preferably as high as possible, and preferably contains at least 3% or more, which is desirable for industrial production. As the carbon dioxide gas, a commercially available liquid carbon dioxide, dry ice, combustion gas, exhaust gas, or the like can be used. Furthermore, in order to promote the reaction, it is also effective to put the granulated material in a pressure vessel and feed pressurized carbon dioxide gas, or to degas with a vacuum pump or the like before sending the carbon dioxide gas. It is. For example, when 3 atm of pressurized carbon dioxide is used, the reaction is completed in 0.5 to 3 hours.
【００２０】炭酸化反応の終了した造粒物を乾燥させる
工程は、一般的に汎用されている方法が採用できる。乾
燥は、生成したシリカスケルトンゲンの比表面積が減少
しない温度、すなわち４００℃以下が望ましい。For the step of drying the granulated product after the carbonation reaction, a generally used method can be employed. Drying is preferably performed at a temperature at which the specific surface area of the generated silica skeleton does not decrease, that is, at 400 ° C. or lower.
【００２１】以下に本発明の実施例および比較例を説明
する。Examples of the present invention and comparative examples will be described below.
【実施例１】ＡＬＣの粉径０．８ｍｍ以下の破砕粉体
に、水を加えて均一に混合した。この混合物の含水量は
粉体固形物重量に対して５０％とした。この混合物を、
押し出し造粒機によって、径１０ｍｍ、長さ１０〜２０
ｍｍの円筒形ペレットを作成した。このペレットを圧力
容器に入れ、０．０３４ＭＰａまで真空ポンプで脱気し
た後、炭酸ガスを封入し、約０．３ＭＰａまで圧力を保
持した状態で炭酸化を行った。そして、４時間後ペレッ
トを取り出し、１１０℃で乾燥させた。このペレットを
直径１０ｃｍ深さ５ｃｍの円筒容器に厚さ３ｃｍまで入
れ、恒温恒湿槽内に設置し、恒温恒湿槽を温度３０℃、
相対湿度４０％で１週間保持した後に、相対湿度９０％
及び４０％の雰囲気を７２時間単位で繰り返し制御し、
その時の重量変化を調べた。その結果を図１に示す。Example 1 Water was added to a crushed powder of ALC having a powder diameter of 0.8 mm or less and uniformly mixed. The water content of this mixture was 50% based on the weight of the solid powder. This mixture is
By extrusion granulator, diameter 10mm, length 10-20
mm cylindrical pellets were prepared. The pellets were placed in a pressure vessel, degassed with a vacuum pump to 0.034 MPa, filled with carbon dioxide gas, and carbonized while maintaining the pressure at about 0.3 MPa. After 4 hours, the pellet was taken out and dried at 110 ° C. This pellet is placed in a cylindrical container having a diameter of 10 cm and a depth of 5 cm up to a thickness of 3 cm, placed in a thermo-hygrostat, and the thermo-hygrostat at a temperature of 30 ° C.
After holding at 40% relative humidity for 1 week, 90% relative humidity
And the atmosphere of 40% is repeatedly controlled in units of 72 hours,
The weight change at that time was examined. The result is shown in FIG.
【００２２】[0022]
【実施例２】ＡＬＣの粉径０．６ｍｍ以下の加工屑を転
動造粒機に入れ、転動中に水を加えながら造粒した。作
成した造粒物の含水量は約６５％であり、径８〜２０ｍ
ｍの球状であった。この造粒物を、密閉容器に入れ、炭
酸ガスを濃度１０％で流して炭酸化を行った。３日後、
造粒物を取り出し、１１０℃で乾燥させた。この造粒物
を直径１０ｃｍ深さ５ｃｍの円筒容器に厚さ３ｃｍまで
入れ、恒温恒湿槽内に設置し、恒温恒湿槽を温度３０
℃、相対湿度４０％で１週間保持した後に、相対湿度９
０％及び４０％の雰囲気を７２時間単位で繰り返し制御
し、その時の重量変化を調べた。その結果を図１に示
す。Example 2 ALC dust of 0.6 mm or less was put into a rolling granulator and granulated while adding water during rolling. The water content of the formed granules is about 65%, and the diameter is 8 to 20 m.
m. The granulated product was placed in a closed container, and carbonation was performed by flowing carbon dioxide gas at a concentration of 10%. Three days later,
The granulated material was taken out and dried at 110 ° C. This granulated product is put into a cylindrical container having a diameter of 10 cm and a depth of 5 cm up to a thickness of 3 cm, placed in a thermo-hygrostat, and heated at a thermo-hygrostat at a temperature of 30 cm.
C. and a relative humidity of 40% for one week.
The atmosphere of 0% and 40% was repeatedly controlled in units of 72 hours, and the weight change at that time was examined. The result is shown in FIG.
【００２３】[0023]
【実施例３】ＡＬＣの粉径０．６ｍｍ以下の加工屑を、
転動造粒機に入れ、転動中に水を加えながら造粒した。
作成した造粒物の含水量は約６０％であり、径２〜５ｍ
ｍの球状であった。容器底面にドライアイスを置き、そ
の上からこの造粒物で覆い、２日間放置した。その後、
造粒物を取り出し、１１０℃で乾燥させた。この造粒物
を直径１０ｃｍ深さ５ｃｍの円筒容器に厚さ３ｃｍまで
入れ、恒温恒湿槽内に設置し、恒温恒湿槽を温度３０
℃、相対湿度４０％で１週間保持した後に、相対湿度９
０％及び４０％の雰囲気を７２時間単位で繰り返し制御
し、その時の重量変化を調べた。その結果を図１に示
す。Example 3 ALC dust of 0.6 mm or less
The mixture was placed in a tumbling granulator and granulated while adding water during tumbling.
The water content of the formed granules is about 60%, and the diameter is 2 to 5 m.
m. Dry ice was placed on the bottom of the container, covered with the granules from above, and allowed to stand for 2 days. afterwards,
The granulated material was taken out and dried at 110 ° C. This granulated product is put into a cylindrical container having a diameter of 10 cm and a depth of 5 cm up to a thickness of 3 cm, placed in a thermo-hygrostat, and heated at a thermo-hygrostat at a temperature of 30 cm.
C. and a relative humidity of 40% for one week.
The atmosphere of 0% and 40% was repeatedly controlled in units of 72 hours, and the weight change at that time was examined. The result is shown in FIG.
【００２４】[0024]
【比較例１】ＡＬＣの破砕物をフルイ分級して１．５〜
４ｍｍの粒を得る。この粒を１１０℃で乾燥させた後、
直径１０ｃｍ深さ５ｃｍの円筒容器に厚さ３ｃｍまで入
れ、恒温恒湿槽内に設置し、恒温恒湿槽を温度３０℃、
相対湿度４０％で１週間保持した後に、相対湿度９０％
及び４０％の雰囲気を７２時間単位で繰り返し制御し、
その時の重量変化を調べた。その結果を図１に示す。[Comparative Example 1] The crushed product of ALC was classified by sieve to 1.5 to
4 mm grains are obtained. After drying these grains at 110 ° C,
Put into a cylindrical container with a diameter of 10 cm and a depth of 5 cm to a thickness of 3 cm, place it in a thermo-hygrostat, set the thermo-hygrostat at a temperature of 30 ° C
After holding at 40% relative humidity for 1 week, 90% relative humidity
And the atmosphere of 40% is repeatedly controlled in units of 72 hours,
The weight change at that time was examined. The result is shown in FIG.
【００２５】[0025]
【比較例２】ＡＬＣの粉砕物をフルイ分級して１．５〜
４ｍｍの粒を得る。この粒を含水率４５％にし、圧力容
器に入れ、０．０３４ＭＰａまで真空ポンプで脱気した
あと、炭酸ガスを注入し、圧力を約０．３ＭＰａで保持
した状態で炭酸化を行った。４時間後、この粒を取り出
し、１１０℃で乾燥させた後、直径１０ｃｍ深さ５ｃｍ
の円筒容器に厚さ３ｃｍまで入れ、恒温恒湿槽内に設置
し、恒温恒湿槽を温度３０℃、相対湿度４０％で１週間
保持した後に、相対湿度９０％及び４０％の雰囲気を７
２時間単位で繰り返し制御し、その時の重量変化を調べ
た。その結果を図１に示す。Comparative Example 2 ALC pulverized material was classified by sieve to 1.5 to
4 mm grains are obtained. The granules were adjusted to a water content of 45%, placed in a pressure vessel, degassed with a vacuum pump to 0.034 MPa, carbon dioxide was injected, and carbonation was performed while maintaining the pressure at about 0.3 MPa. After 4 hours, the granules are taken out, dried at 110 ° C., and then 10 cm in diameter and 5 cm in depth
And placed in a thermo-hygrostat at a temperature of 30 ° C. and a relative humidity of 40% for one week.
The control was repeated every two hours, and the weight change at that time was examined. The result is shown in FIG.
【００２６】以上の実施例及び比較例より、トバモライ
トを主成分とする軽量気泡コンクリートの粉体と水と混
合物を造粒し、次いでその造粒物を炭酸ガスで炭酸化・
硬化させた後、乾燥させることにより得られる調湿材
は、ＡＬＣの粒自体、あるいはそれを炭酸化させた調湿
材に比べて、非常に大きな吸放湿量と同時に、湿度に対
する反応が早い透湿能力を得られることが、図１の結果
より明らかである。また、本実施例１の調湿材が最も吸
放湿量が大きいが、これは、押し出し造粒によりペレッ
トが緻密になっているためと考えられる。From the above Examples and Comparative Examples, a mixture of powder of lightweight cellular concrete containing tobermorite as a main component and water was granulated, and then the granulated product was carbonated with carbon dioxide gas.
The humidity control material obtained by curing and then drying is very large in the amount of moisture absorbed and released and has a rapid response to humidity, compared to the ALC particles themselves or the carbonized humidity control material. It is clear from the results of FIG. 1 that the moisture permeability can be obtained. The humidity control material of Example 1 has the largest amount of moisture absorption and desorption, which is considered to be due to the fact that the pellets are dense by extrusion granulation.
【００２７】[0027]
【発明の効果】以上詳述したように、本発明の調湿材の
製造方法によれば、吸放湿量および透湿能力に優れ、従
来の調湿材に比べ大量の吸放湿量と素早い調湿反応を持
った調湿材が得られる。従って、その調湿材を建物の床
下、壁体内、天井裏、畳下等に敷いて、空間あるいは建
材自身の湿度を調節することにより、アレルギー疾患の
原因となるダニ・カビの発生を抑制して住人の健康を保
ったり、白アリによる建物の被害を抑制したりして優れ
た効果を発揮することができる。As described above in detail, according to the method for producing a humidity control material of the present invention, it is excellent in moisture absorption / desorption and moisture permeability, and has a large moisture absorption / desorption amount as compared with the conventional humidity control material. A humidity control material having a quick humidity control reaction can be obtained. Therefore, by laying the humidity control material under the floor, inside the wall, inside the ceiling, under the tatami, etc. of the building and adjusting the humidity of the space or the building material itself, it is possible to suppress the occurrence of mites and molds that cause allergic diseases. It is possible to maintain the health of residents and to suppress the damage of buildings by termites, and to exhibit excellent effects.
【図１】本発明によって得られる調湿材と比較例による
調湿材の吸放湿性を示す線図。FIG. 1 is a diagram showing the moisture absorption / release properties of a humidity control material obtained by the present invention and a humidity control material according to a comparative example.
Claims (3)
クリートの粉体と水との混合物を造粒し、次いでその造
粒物を炭酸ガスで炭酸化・硬化させた後、乾燥させる調
湿材の製造方法。The present invention relates to a humidity control material which comprises granulating a mixture of powder of lightweight cellular concrete mainly composed of tobermorite and water and then carbonizing and hardening the granulated material with carbon dioxide gas, followed by drying. Production method.
級で２〜３０ｍｍであることを特徴とする請求項１記載
の調湿材の製造方法。2. The method for producing a humidity control material according to claim 1, wherein the size of the granulated product of the mixture is 2 to 30 mm by sieve classification.
イト結晶を３０重量％以上含んでいることを特徴とする
請求項１又は２記載の調湿材の製造方法。3. The method for producing a humidity control material according to claim 1, wherein the lightweight cellular concrete powder contains at least 30% by weight of tobermorite crystals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20876596A JPH1033979A (en) | 1996-07-19 | 1996-07-19 | Method of manufacturing humidity control material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20876596A JPH1033979A (en) | 1996-07-19 | 1996-07-19 | Method of manufacturing humidity control material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1033979A true JPH1033979A (en) | 1998-02-10 |
Family
ID=16561727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20876596A Pending JPH1033979A (en) | 1996-07-19 | 1996-07-19 | Method of manufacturing humidity control material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1033979A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003033622A (en) * | 2001-07-23 | 2003-02-04 | Sumitomo Kinzoku Kozan Siporex Kk | Humidity control material |
| JP2006219346A (en) * | 2005-02-10 | 2006-08-24 | Yoshizawa Lime Industry | Humidity control molded body and manufacturing method thereof |
| JP2006315925A (en) * | 2005-05-13 | 2006-11-24 | Nippon Home Products Kk | Ceramic using diatom earth as material and method of manufacturing the same |
| JP2022139995A (en) * | 2021-03-12 | 2022-09-26 | 株式会社フジタ | Method for producing desiccant |
-
1996
- 1996-07-19 JP JP20876596A patent/JPH1033979A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003033622A (en) * | 2001-07-23 | 2003-02-04 | Sumitomo Kinzoku Kozan Siporex Kk | Humidity control material |
| JP2006219346A (en) * | 2005-02-10 | 2006-08-24 | Yoshizawa Lime Industry | Humidity control molded body and manufacturing method thereof |
| JP2006315925A (en) * | 2005-05-13 | 2006-11-24 | Nippon Home Products Kk | Ceramic using diatom earth as material and method of manufacturing the same |
| JP2022139995A (en) * | 2021-03-12 | 2022-09-26 | 株式会社フジタ | Method for producing desiccant |
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