JP6742102B2 - Coated diatomaceous earth, product containing coated diatomaceous earth, and method for producing coated diatomaceous earth - Google Patents
Coated diatomaceous earth, product containing coated diatomaceous earth, and method for producing coated diatomaceous earth Download PDFInfo
- Publication number
- JP6742102B2 JP6742102B2 JP2016019887A JP2016019887A JP6742102B2 JP 6742102 B2 JP6742102 B2 JP 6742102B2 JP 2016019887 A JP2016019887 A JP 2016019887A JP 2016019887 A JP2016019887 A JP 2016019887A JP 6742102 B2 JP6742102 B2 JP 6742102B2
- Authority
- JP
- Japan
- Prior art keywords
- diatomaceous earth
- coated
- suspension
- compound
- gypsum
- 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.)
- Expired - Fee Related
Links
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims description 130
- 239000005909 Kieselgur Substances 0.000 title claims description 128
- 238000004519 manufacturing process Methods 0.000 title claims description 16
- 239000000725 suspension Substances 0.000 claims description 36
- 239000010440 gypsum Substances 0.000 claims description 34
- 229910052602 gypsum Inorganic materials 0.000 claims description 34
- 229940043430 calcium compound Drugs 0.000 claims description 33
- 150000001674 calcium compounds Chemical class 0.000 claims description 33
- 239000000463 material Substances 0.000 claims description 17
- -1 calcium sulfate compound Chemical class 0.000 claims description 15
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Inorganic materials [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 13
- 239000007864 aqueous solution Substances 0.000 claims description 12
- 239000011248 coating agent Substances 0.000 claims description 12
- 238000000576 coating method Methods 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 10
- 239000000920 calcium hydroxide Substances 0.000 claims description 6
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 6
- 235000011116 calcium hydroxide Nutrition 0.000 claims description 6
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 5
- 239000010408 film Substances 0.000 description 17
- 239000000843 powder Substances 0.000 description 9
- 239000002689 soil Substances 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000002781 deodorant agent Substances 0.000 description 7
- 238000002156 mixing Methods 0.000 description 5
- 239000004927 clay Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000011575 calcium Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000001877 deodorizing effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002861 polymer material Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000009681 x-ray fluorescence measurement Methods 0.000 description 2
- 241000206761 Bacillariophyta Species 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 239000003522 acrylic cement Substances 0.000 description 1
- 230000000274 adsorptive effect Effects 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical group O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 description 1
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 description 1
- GJYLKIZKRHDRER-UHFFFAOYSA-N calcium;sulfuric acid Chemical class [Ca].OS(O)(=O)=O GJYLKIZKRHDRER-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Landscapes
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Silicon Compounds (AREA)
Description
本発明は、被覆珪藻土、被覆珪藻土を含む製品、及び被覆珪藻土の製造方法に関する。 The present invention relates to coated diatomaceous earth, a product containing coated diatomaceous earth, and a method for producing coated diatomaceous earth.
珪藻土は、珪藻が水底に堆積して有機物が分解され、二酸化ケイ素（ＳｉＯ２）を主体とする殻のみが残って固化したものである。珪藻の殻は多数の細孔を有することから、比表面積が非常に大きい。このため珪藻土は大きな吸着力を備えており、様々な物質を吸着するという特性を有する。この特性により、吸湿性及び保温性を有する壁材、フィルターの目詰まりを防止する濾過助剤、乾燥土壌を改良する土壌改良材、育苗培土等の、幅広い分野で活用されている。 The diatomaceous earth is solidified by depositing diatoms on the bottom of the water, decomposing organic substances, and leaving only shells mainly composed of silicon dioxide (SiO 2 ). Since the diatom shell has a large number of pores, it has a very large specific surface area. Therefore, diatomaceous earth has a large adsorptive power and has a property of adsorbing various substances. Due to this property, it is utilized in a wide range of fields such as wall materials having hygroscopicity and heat retention, filter aids for preventing filter clogging, soil conditioners for improving dry soil, and nursery soil.
珪藻土はそれ自体には接着力がないため、壁材や育苗培土とする場合には粘土やアクリル系接着剤等の高分子材料と混合して固めて用いられる。粘土や高分子材料により固結した珪藻土は、育苗培土として用いると苗の根の健全な伸長を妨げるおそれがある。また、このように固結した珪藻土は堅くて脆いものとなり、一定の荷重が加わるとすぐに崩壊してしまう。そこで、粘土や接着剤等のバインダーを用いずに、珪藻土粉末と細粒ゼオライトを混合して育苗培土を形成する技術が開発されている（例えば、特許文献１を参照）。 Since diatomaceous earth itself has no adhesive strength, when it is used as a wall material or a seedling cultivation soil, it is mixed with a polymer material such as clay or an acrylic adhesive and solidified. Diatomaceous earth solidified with clay or polymer material may hinder the healthy growth of seedling roots when used as seedling cultivation soil. Moreover, the diatomaceous earth thus hardened becomes hard and brittle, and immediately collapses when a constant load is applied. Therefore, a technique has been developed in which diatomaceous earth powder and fine-grained zeolite are mixed to form a seedling cultivation soil without using a binder such as clay or an adhesive (see, for example, Patent Document 1).
しかしながら、特許文献１に記載された育苗培土は、堅くて脆いという欠点はないものの軟らかいため強度が不足しており、取扱いが難しい。さらに、粘土や高分子材料と混合して固める方法や、特許文献１に記載の方法の、いずれの製造方法によっても、珪藻土が本来有する調湿性や消臭性等の特性が低下してしまうという問題点があった。 However, although the seedling-raising soil described in Patent Document 1 does not have the drawback of being hard and brittle, it is soft and lacks strength, making it difficult to handle. Furthermore, by any of the manufacturing methods, such as the method of mixing with clay or a polymer material and hardening, or the method described in Patent Document 1, the properties such as humidity control and deodorant properties originally possessed by diatomaceous earth deteriorate. There was a problem.
本発明は、このような問題点に鑑みてなされたものであって、珪藻土が本来有する調湿性や消臭性等の特性を十分に発揮させることができ、かつ、取扱いが容易な強度を有し広範な分野で活用することができる被覆珪藻土、被覆珪藻土を含む製品、及び被覆珪藻土の製造方法を提供することを目的とする。 The present invention has been made in view of such problems, and can sufficiently exhibit characteristics such as humidity control property and deodorant property originally possessed by diatomaceous earth, and has strength that is easy to handle. An object of the present invention is to provide a coated diatomaceous earth, a product containing the coated diatomaceous earth, and a method for producing the coated diatomaceous earth that can be utilized in a wide range of fields.
上記目的を達成するために、本発明の第１の観点に係る被覆珪藻土は、珪藻土の表面が無機カルシウム化合物を含有する材料からなる皮膜で被覆されており、
前記皮膜の厚さは５〜３００μｍの範囲内及び／又は珪藻土の粒子径の２〜８０％の範囲内であり、
前記珪藻土の大きさは平均粒子径が５０μｍ〜１０ｍｍの範囲内である。
In order to achieve the above object, the coated diatomaceous earth according to the first aspect of the present invention, the surface of the diatomaceous earth is coated with a film made of a material containing an inorganic calcium compound,
The thickness of the coating Ri der range 2 to 80% of the particle size range and / or diatomaceous earth 5 to 300 .mu.m,
The diatomaceous earth has an average particle size of 50 μm to 10 mm.
前記無機カルシウム化合物は硫酸カルシウム化合物であることが好ましい。 The inorganic calcium compound is preferably a calcium sulfate compound.
前記硫酸カルシウム化合物は石膏であることが好ましい。 The calcium sulfate compound is preferably gypsum.
前記無機カルシウム化合物は消石灰であることが好ましい。 The inorganic calcium compound is preferably slaked lime.
上記目的を達成するために、本発明の第２の観点に係る被覆珪藻土を含む製品は、上記のいずれかに記載された被覆珪藻土を含む。 In order to achieve the above object, a product containing the coated diatomaceous earth according to the second aspect of the present invention includes the coated diatomaceous earth described in any of the above.
上記目的を達成するために、本発明の第３の観点に係る被覆珪藻土の製造方法は、
所定の大きさを有する珪藻土を準備する工程と、
無機カルシウム化合物の懸濁液又は水溶液を準備する工程と、
前記珪藻土を前記無機カルシウム化合物の懸濁液又は水溶液に浸漬する工程と、
前記珪藻土の表面に付着した前記無機カルシウム化合物の皮膜を硬化させる工程と、
前記無機カルシウム化合物の皮膜が付着した前記珪藻土を前記懸濁液又は水溶液から取り出す工程と、
を備え、
前記無機カルシウム化合物は硫酸カルシウム化合物であり、該硫酸カルシウム化合物の懸濁液又は水溶液の濃度は１〜１５質量％の範囲内であり、
前記珪藻土の大きさは平均粒子径が５０μｍ〜１０ｍｍの範囲内である。
In order to achieve the above object, the method for producing coated diatomaceous earth according to the third aspect of the present invention,
A step of preparing a diatomaceous earth having a predetermined size,
A step of preparing a suspension or an aqueous solution of an inorganic calcium compound,
Immersing the diatomaceous earth in a suspension or aqueous solution of the inorganic calcium compound,
Curing the film of the inorganic calcium compound attached to the surface of the diatomaceous earth,
Removing the diatomaceous earth with the film of the inorganic calcium compound attached from the suspension or aqueous solution,
Equipped with
The inorganic calcium compound is a calcium sulfate compound, a suspension or concentration of the aqueous solution of sulfuric acid calcium compounds Ri der range of 1 to 15 wt%,
The diatomaceous earth has an average particle size of 50 μm to 10 mm.
前記硫酸カルシウム化合物は石膏であることが好ましい。 The calcium sulfate compound is preferably gypsum.
本発明の被覆珪藻土は、珪藻土が本来有する調湿性や消臭性等の特性を十分に発揮させることができ、かつ、取扱いが容易な強度を有し広範な分野で活用することができる。 INDUSTRIAL APPLICABILITY The coated diatomaceous earth of the present invention can sufficiently exhibit properties such as humidity control and deodorant properties that diatomaceous earth originally has, and has strength that is easy to handle and can be utilized in a wide range of fields.
以下、本発明の実施形態について詳細に説明する。必要に応じて、図１ないし図６を参照する。 Hereinafter, embodiments of the present invention will be described in detail. Refer to FIGS. 1 to 6 as needed.
本発明の実施形態に係る被覆珪藻土は、無機カルシウム化合物を含有する材料からなる皮膜で覆われている。無機カルシウム化合物には、硫酸カルシウム化合物、炭酸カルシウム化合物、水酸化カルシウム化合物、酸化カルシウム化合物等がある。無機カルシウム化合物を含有する皮膜は、透湿性に優れるという特長を有する。 The coated diatomaceous earth according to the embodiment of the present invention is covered with a film made of a material containing an inorganic calcium compound. The inorganic calcium compound includes a calcium sulfate compound, a calcium carbonate compound, a calcium hydroxide compound, a calcium oxide compound and the like. A film containing an inorganic calcium compound has a feature of excellent moisture permeability.
また、無機カルシウム化合物を含有する皮膜は、珪藻土の表面を保護して珪藻土の殻が破壊されるのを防止する。珪藻土の殻が外力から保護されることによって比表面積を大きく保つことができ、珪藻土が本来有する優れた調湿性や消臭性等の特性が維持される。 Further, the film containing the inorganic calcium compound protects the surface of the diatomaceous earth and prevents the shell of the diatomaceous earth from being destroyed. By protecting the shell of diatomaceous earth from an external force, it is possible to maintain a large specific surface area, and the characteristics such as excellent humidity control and deodorant properties that diatomaceous earth originally have are maintained.
無機カルシウム化合物としては、硫酸カルシウム（ＣａＳＯ４）化合物、又は石灰、すなわち消石灰（Ｃａ（ＯＨ）２）が好ましい。特に、硫酸カルシウム化合物の一種である石膏を用いることが好ましい。 As the inorganic calcium compound, a calcium sulfate (CaSO 4 ) compound or lime, that is, slaked lime (Ca(OH) 2 ) is preferable. In particular, it is preferable to use gypsum, which is a kind of calcium sulfate compound.
石膏は、硫酸カルシウムの二水和物（ＣａＳＯ４・２Ｈ２Ｏ）である。広義の「石膏」には、硫酸カルシウムの１／２水和物（ＣａＳＯ４・０．５Ｈ２Ｏ）や無水物（ＣａＳＯ４）も含まれるが、本発明においては本来の意味の（狭義の）石膏を用いるのが好ましい。本実施形態では、狭義の石膏（ＣａＳＯ４・２Ｈ２Ｏ）が好ましく用いられる。石膏は水に難溶性であるため、水に懸濁させて用いられる。 Gypsum is calcium sulfate dihydrate (CaSO 4 .2H 2 O). In a broad sense, "gypsum" includes calcium sulfate hemihydrate (CaSO 4 .0.5H 2 O) and anhydride (CaSO 4 ), but in the present invention, the original meaning (in a narrow sense). ) It is preferable to use gypsum. In the present embodiment, gypsum in a narrow sense (CaSO 4 .2H 2 O) is preferably used. Since gypsum is poorly soluble in water, it is used by suspending it in water.
本実施形態の懸濁液における石膏の混入割合は、１質量％以上、１５質量％以下であることが好ましく、２質量％〜１４質量％の範囲内であることがより好ましい。懸濁液１１における石膏の混入割合が１質量％以上であることにより、珪藻土を懸濁液に浸漬した際に、必要な厚さ以上の石膏の皮膜が形成される。また、石膏の混入割合が１５質量％以下であることにより、珪藻土に形成される石膏の皮膜が厚すぎて凝集してしまう事態が防止される。 The mixing ratio of gypsum in the suspension of the present embodiment is preferably 1% by mass or more and 15% by mass or less, and more preferably 2% by mass to 14% by mass. When the mixing ratio of the gypsum in the suspension 11 is 1% by mass or more, when the diatomaceous earth is dipped in the suspension, a gypsum film having a required thickness or more is formed. Further, when the mixing ratio of gypsum is 15% by mass or less, it is possible to prevent a situation in which the gypsum coating formed on the diatomaceous earth is too thick and aggregates.
本実施形態における被覆珪藻土の製造方法について図１を参照して説明する。図１は、本実施形態に係る被覆珪藻土の製造工程を示すフローチャートである。 The method for producing the coated diatomaceous earth in the present embodiment will be described with reference to FIG. FIG. 1 is a flowchart showing a manufacturing process of the coated diatomaceous earth according to the present embodiment.
図１に示されるように、本実施形態に係る被覆珪藻土素材の製造工程では、まず、所定の大きさを有する珪藻土が準備される（ステップＳ１１）。ステップＳ１１には、珪藻土の塊を所定の大きさに粉砕すること、又は、予め所定の大きさに粉砕された珪藻土を使用すること、等も含まれる。 As shown in FIG. 1, in the manufacturing process of the coated diatomaceous earth material according to the present embodiment, first, diatomaceous earth having a predetermined size is prepared (step S11). Step S11 also includes crushing a lump of diatomaceous earth into a predetermined size, or using diatomaceous earth crushed into a predetermined size in advance.
一方、無機カルシウム化合物の懸濁液又は水溶液が準備される（ステップＳ１２）。ステップＳ１２には、無機カルシウム化合物、例えば石膏や石灰の塊を粉砕し、所定量の水に懸濁又は溶解させることと、それ以外にも、予め所定の大きさに粉砕された無機カルシウム化合物を所定量の水に懸濁又は溶解させたものや、予め所定の濃度に調製された無機カルシウム化合物の懸濁液又は溶解液を使用すること、等も含まれる。 Meanwhile, a suspension or aqueous solution of an inorganic calcium compound is prepared (step S12). In step S12, an inorganic calcium compound, for example, a gypsum or lime mass is crushed and suspended or dissolved in a predetermined amount of water, and in addition to that, an inorganic calcium compound crushed to a predetermined size in advance is used. It also includes suspension or dissolution in a predetermined amount of water, use of a suspension or solution of an inorganic calcium compound prepared in advance to a predetermined concentration, and the like.
なお、前記ステップＳ１１とステップＳ１２との順番は、一例であり、ステップＳ１１とステップＳ１２との順番は逆でもよい。また、ステップＳ１１とステップＳ１２とが同時並行で実施されてもよい。 The order of steps S11 and S12 is an example, and the order of steps S11 and S12 may be reversed. Moreover, step S11 and step S12 may be simultaneously performed in parallel.
ステップＳ１１で準備された所定の大きさの珪藻土がステップＳ１２で準備された無機カルシウム化合物の懸濁液又は水溶液に浸漬される（ステップＳ１３）。珪藻土を浸漬する時間は、珪藻土の表面が所定の厚さの無機カルシウム化合物の皮膜で被覆されるまでの時間に設定される。 The diatomaceous earth of a predetermined size prepared in step S11 is immersed in the suspension or aqueous solution of the inorganic calcium compound prepared in step S12 (step S13). The time for immersing the diatomaceous earth is set to the time until the surface of the diatomaceous earth is covered with the film of the inorganic calcium compound having a predetermined thickness.
続いて、珪藻土の表面を被覆した無機カルシウム化合物の皮膜の硬化が行われる（ステップＳ１４）。皮膜の硬化は、例えば、加熱により行われる。硬化時間や温度等の硬化条件は、珪藻土の大きさ、すなわち比表面積と、無機カルシウム化合物の種類及び懸濁液中の濃度（混入割合）に応じて適切に設定される。 Then, the film of the inorganic calcium compound coating the surface of the diatomaceous earth is cured (step S14). The coating is cured by heating, for example. The curing conditions such as curing time and temperature are appropriately set according to the size of the diatomaceous earth, that is, the specific surface area, the type of the inorganic calcium compound and the concentration (mixing ratio) in the suspension.
皮膜が硬化した後、珪藻土が取り出される（ステップＳ１５）。そして、取り出された珪藻土に対して、必要に応じて乾燥等の処理が行われる（ステップＳ１６）。以上のステップＳ１１ないしステップＳ１６により、本実施形態に係る被覆珪藻土が製造される。製造された被覆珪藻土は、種々の分野において応用することが可能である。例えば、被覆珪藻土を形成してなる板材（被覆珪藻土の板材）や、コースター、まな板、バスマット、等に用いることができる。 After the film is hardened, diatomaceous earth is taken out (step S15). Then, the extracted diatomaceous earth is subjected to a treatment such as drying, if necessary (step S16). Through the above steps S11 to S16, the coated diatomaceous earth according to the present embodiment is manufactured. The produced coated diatomaceous earth can be applied in various fields. For example, it can be used for a plate material (a plate material of coated diatomaceous earth) formed by forming coated diatomaceous earth, a coaster, a cutting board, a bath mat, and the like.
図２に示されるように、本実施形態に係る被覆珪藻土の製造方法では、無機カルシウム化合物の種類に応じて懸濁液又は水溶液中の濃度を適切に選択することが重要となる。例えば、無機カルシウム化合物として石膏を水に懸濁させた懸濁液１１を用いる場合には、懸濁液１１中の石膏の濃度を所定濃度以下とする必要がある。 As shown in FIG. 2, in the method for producing coated diatomaceous earth according to this embodiment, it is important to appropriately select the concentration in the suspension or the aqueous solution according to the type of the inorganic calcium compound. For example, when using the suspension 11 in which gypsum is suspended in water as the inorganic calcium compound, the concentration of gypsum in the suspension 11 needs to be below a predetermined concentration.
石膏の濃度を所定濃度以下とすれば、被覆珪藻土１０の製造過程で珪藻土１２の表面に適切な厚さの皮膜１３が形成される。これによって、懸濁液１１の中で、珪藻土１２の表面は、固まった石膏の薄い皮膜１３で被覆される。これが、本願発明が意図する、被覆珪藻土（珪藻土１２を主体とした素材）１０である。この被覆珪藻土１０を構成する珪藻土１２間には、隙間Ｈが形成されている。この隙間Ｈがあることで、この隙間Ｈと珪藻土１２が本来有する多孔質微細孔１２ａとによって、吸湿性と、脱臭性が確保される。勿論、図示の如く、珪藻土１２の中心部には、石膏が含まれず、当該珪藻土１２が本来有する吸湿性と、脱臭性が確保されている。 When the concentration of gypsum is set to be equal to or lower than the predetermined concentration, the film 13 having an appropriate thickness is formed on the surface of the diatomaceous earth 12 during the manufacturing process of the coated diatomaceous earth 10. As a result, the surface of the diatomaceous earth 12 in the suspension 11 is covered with a thin film 13 of hardened gypsum. This is the coated diatomaceous earth (material mainly composed of diatomaceous earth 12) 10 intended by the present invention. A gap H is formed between the diatomaceous earths 12 forming the coated diatomaceous earth 10. The presence of the gap H ensures hygroscopicity and deodorizing property due to the gap H and the porous micropores 12a originally included in the diatomaceous earth 12. Of course, as shown in the figure, the central part of the diatomaceous earth 12 does not contain gypsum, and the hygroscopicity and deodorizing property originally possessed by the diatomaceous earth 12 are secured.
これに対して、石膏の濃度が所定濃度を超えると、図３に示されるように、珪藻土１２の表面に形成される皮膜２３が厚くなりすぎる。このため、懸濁液２１の中で、厚い石膏の皮膜２３で被覆された珪藻土１２からなる珪藻土を含む素材２０同士が結合し、この珪藻土を含む素材２０の間には、隙間が形成されず、所謂、凝集体２４となる。従って、隙間Ｈ、及び珪藻土１２が本来有する多孔質、即ち、無数の微細孔１２ａにより機能する吸湿性や脱臭性が確保されない。 On the other hand, when the concentration of gypsum exceeds the predetermined concentration, as shown in FIG. 3, the film 23 formed on the surface of the diatomaceous earth 12 becomes too thick. Therefore, in the suspension 21, the materials 20 containing the diatomaceous earth composed of the diatomaceous earth 12 coated with the thick gypsum film 23 are bonded to each other, and no gap is formed between the materials 20 containing the diatomaceous earth. The so-called aggregate 24 is formed. Therefore, the hygroscopicity and deodorizing property that function due to the gap H and the porous nature of the diatomaceous earth 12, that is, the innumerable fine pores 12a are not secured.
以下、本発明を実施例に基づいてさらに詳しく説明するが、本発明はこれらの実施例に限定されるものではない。 Hereinafter, the present invention will be described in more detail based on examples, but the present invention is not limited to these examples.
［実施例１］
本実施例１においては、珪藻土１２として約５ｍｍ３の大きさを有する珪藻土１２のチップを用いた。一方、２，８６０ｃｍ３の蒸留水に、石膏を４００ｇ投入して撹拌し、懸濁液１１を作製した。このようにして作製した懸濁液１１中の石膏の混入量は１４．０質量％となる。この懸濁液１１に、上記の珪藻土１２のチップを浸漬させた。
[Example 1]
In the present Example 1, a chip of diatomaceous earth 12 having a size of about 5 mm 3 was used as the diatomaceous earth 12. On the other hand, 400 g of gypsum was put into 2,860 cm 3 of distilled water and stirred to prepare a suspension 11. The mixed amount of gypsum in the suspension 11 thus produced is 14.0% by mass. The chips of the above diatomaceous earth 12 were immersed in this suspension 11.
本実施例１においては、石膏を懸濁させた懸濁液１１の温度を常温に保って、珪藻土１２チップを５分間浸漬させた。「常温」は日本工業規格（ＪＩＳ）において２０℃±１５℃と定義される。本実施例１においては、懸濁液１１の温度を約２０℃とした。その後、珪藻土１２のチップを取り出して乾燥し、表面を蛍光Ｘ線分析装置（ＸＲＦ）で測定した。ＸＲＦ測定の結果、珪藻土１２のチップの表面にカルシウム（Ｃａ）の薄い層が存在することが分かり、石膏からなる皮膜１３が形成されていることが確認された。このようにして、本発明に係る被覆珪藻土１０が製造された。 In the present Example 1, the temperature of the suspension 11 in which gypsum was suspended was kept at room temperature, and 12 chips of diatomaceous earth was immersed for 5 minutes. “Normal temperature” is defined as 20° C.±15° C. in Japanese Industrial Standard (JIS). In Example 1, the temperature of the suspension 11 was set to about 20°C. Then, the chip of the diatomaceous earth 12 was taken out and dried, and the surface was measured by a fluorescent X-ray analyzer (XRF). As a result of XRF measurement, it was found that a thin layer of calcium (Ca) was present on the surface of the chip of diatomaceous earth 12, and it was confirmed that the coating 13 made of gypsum was formed. In this way, the coated diatomaceous earth 10 according to the present invention was manufactured.
この被覆珪藻土１０の吸湿性を評価したところ、原料として用いた珪藻土１２のチップと同等の特性を有していた。 When the hygroscopicity of the coated diatomaceous earth 10 was evaluated, it had the same characteristics as the chips of the diatomaceous earth 12 used as a raw material.
［実施例２］
本実施例２においては、珪藻土１２のチップを粉砕して用いた。珪藻土１２のチップは、吸収性を維持するために珪藻土１２の殻が破壊されない程度の大きさに粉砕した。本実施例２においては、平均粒子径が１２０μｍの粉末とした。ここで「平均粒子径」とは、レーザ回折式粒度分布測定装置によって測定した平均粒子径をいう。この珪藻土１２の粉末を、実施例１と同様に作製された石膏の懸濁液１１に浸漬させた。
[Example 2]
In Example 2, chips of diatomaceous earth 12 were crushed and used. The chips of the diatomaceous earth 12 were crushed to a size that the shell of the diatomaceous earth 12 was not destroyed in order to maintain the absorbability. In Example 2, powder having an average particle diameter of 120 μm was used. Here, the "average particle diameter" means an average particle diameter measured by a laser diffraction type particle size distribution measuring device. This diatomaceous earth 12 powder was immersed in a gypsum suspension 11 prepared in the same manner as in Example 1.
本実施例２においては、懸濁液１１の温度を４０℃として珪藻土１２の粉末を３分間浸漬させた。その後、珪藻土１２の粉末を取り出して乾燥し、粉末の表面をＸＲＦで測定した。ＸＲＦ測定の結果、珪藻土１２の粉末の表面に、薄い石膏の皮膜１３が形成されていることが確認された。このようにして、本発明に係る被覆珪藻土１０が製造された。 In Example 2, the temperature of the suspension 11 was set to 40° C. and the powder of the diatomaceous earth 12 was immersed in the suspension for 3 minutes. Then, the powder of diatomaceous earth 12 was taken out and dried, and the surface of the powder was measured by XRF. As a result of XRF measurement, it was confirmed that a thin gypsum coating 13 was formed on the surface of the powder of diatomaceous earth 12. In this way, the coated diatomaceous earth 10 according to the present invention was manufactured.
この被覆珪藻土１０の粉末の吸湿性を評価したところ、原料として用いた珪藻土１２の粉末と同等の特性を有していた。 When the hygroscopicity of the powder of the coated diatomaceous earth 10 was evaluated, it had the same characteristics as the powder of the diatomaceous earth 12 used as a raw material.
これらの実施例１及び２に係る被覆珪藻土１０を含む製品は、原料である珪藻土１２の特性をそのまま維持しているため、高い調湿性や消臭性等を有する製品となる。被覆珪藻土１０を含む製品の具体例としては、図４に示される板材３０、図５に示されるコースター３１、図６に示されるバスマット３２、等がある。 The product containing the coated diatomaceous earth 10 according to Examples 1 and 2 maintains the characteristics of the diatomaceous earth 12 as the raw material as it is, and thus has high humidity control and deodorant properties. Specific examples of products containing the coated diatomaceous earth 10 include a plate material 30 shown in FIG. 4, a coaster 31 shown in FIG. 5, a bath mat 32 shown in FIG.
［比較例］
比較例では、珪藻土１２として実施例１と同じ約５ｍｍ３の大きさを有する珪藻土のチップを用いた。一方、２，８６０ｃｍ３の蒸留水に、石膏を４５０ｇ投入して撹拌し、懸濁液２１を作製した。このようにして作製した懸濁液２１中の石膏の混入量は１５．７質量％となる。この懸濁液２１に、上記の珪藻土１２のチップを浸漬させた。
[Comparative example]
In the comparative example, as the diatomaceous earth 12, the same diatomaceous earth chip having a size of about 5 mm 3 as in Example 1 was used. On the other hand, 450 g of gypsum was put into 2,860 cm 3 of distilled water and stirred to prepare a suspension 21. The mixed amount of gypsum in the suspension 21 thus produced is 15.7% by mass. The chips of the above diatomaceous earth 12 were immersed in this suspension 21.
珪藻土１２のチップを懸濁液２１に投入した後に、懸濁液２１中に白い濁りが生じた。この白濁物質は、図３に示される凝集体２４であることが分かった。このように、石膏の濃度が所定濃度を超えると、珪藻土１２の表面に形成される皮膜２３が厚くなりすぎて、珪藻土１２の特性を維持した被覆珪藻土を製造することができない。 After the chips of the diatomaceous earth 12 were put into the suspension 21, white turbidity was generated in the suspension 21. This cloudy substance was found to be the aggregate 24 shown in FIG. As described above, when the concentration of gypsum exceeds the predetermined concentration, the film 23 formed on the surface of the diatomaceous earth 12 becomes too thick, and the coated diatomaceous earth maintaining the characteristics of the diatomaceous earth 12 cannot be manufactured.
以上、本発明の実施形態及び実施例について説明したが、本発明は上記の実施形態及び実施例によって限定されるものではない。 Although the embodiments and examples of the present invention have been described above, the present invention is not limited to the above-described embodiments and examples.
上記の実施例１及び２では、無機カルシウム化合物として石膏を用いた場合について説明した。これに限られるものではなく、無機カルシウム化合物として、例えば消石灰を用いてもよい。また、実施例１及び２では、石膏の懸濁液を用いる場合について説明した。これに代えて、例えば消石灰の水溶液を用いてもよい。 In the above Examples 1 and 2, the case where gypsum was used as the inorganic calcium compound was described. For example, slaked lime may be used as the inorganic calcium compound without being limited thereto. In addition, in Examples 1 and 2, the case of using a gypsum suspension was described. Instead of this, for example, an aqueous solution of slaked lime may be used.
本発明は、本発明の広義の精神と範囲を逸脱することなく、様々な実施形態および変形が可能とされるものである。上述した実施形態及び実施例は、本発明を説明するためのものであり、本発明の範囲を限定するものではない。 The present invention is capable of various embodiments and modifications without departing from the broad spirit and scope of the present invention. The embodiments and examples described above are for explaining the present invention, and do not limit the scope of the present invention.
本発明に係る被覆珪藻土は、高い調湿性や消臭性等の特性を有し、取扱いが容易である。被覆珪藻土は、吸湿・保温性壁材、フィルター濾過助剤、土壌改良材、育苗培土等の、被覆珪藻土を含む製品に好適に利用される。本発明に係る被覆珪藻土の製造方法により、高い調湿性や消臭性等の特性を有し取扱いが容易な被覆珪藻土を提供することができる。 The coated diatomaceous earth according to the present invention has characteristics such as high humidity control property and deodorant property, and is easy to handle. The coated diatomaceous earth is suitably used for a product containing the coated diatomaceous earth, such as a hygroscopic/heat-retaining wall material, a filter aid, a soil improving material, and a nursery soil. By the method for producing coated diatomaceous earth according to the present invention, it is possible to provide the coated diatomaceous earth that has characteristics such as high humidity control property and deodorant property and is easy to handle.
１０ 被覆珪藻土
１１、２１ 懸濁液
１２ 珪藻土
１２ａ 微細孔
１３、２３ 皮膜
２０ 珪藻土を含む素材
２４ 凝集体
３０ 板材
３１ コースター
３２ バスマット
Ｈ 隙間
10 Coated diatomaceous earth 11, 21 Suspension 12 Diatomaceous earth 12a Micropores 13, 23 Film 20 Material containing diatomaceous earth 24 Aggregate 30 Plate material 31 Coaster 32 Bath mat H Gap
Claims (7)
前記皮膜の厚さは５〜３００μｍの範囲内及び／又は珪藻土の粒子径の２〜８０％の範囲内であり、
前記珪藻土の大きさは平均粒子径が５０μｍ〜１０ｍｍの範囲内である、
被覆珪藻土。 The surface of diatomaceous earth is covered with a film made of a material containing an inorganic calcium compound,
The thickness of the coating Ri der range 2 to 80% of the particle size range and / or diatomaceous earth 5 to 300 .mu.m,
The diatomaceous earth has an average particle size in the range of 50 μm to 10 mm.
Coated diatomaceous earth.
無機カルシウム化合物の懸濁液又は水溶液を準備する工程と、
前記珪藻土を前記無機カルシウム化合物の懸濁液又は水溶液に浸漬する工程と、
前記珪藻土の表面に付着した前記無機カルシウム化合物の皮膜を硬化させる工程と、
前記無機カルシウム化合物の皮膜が付着した前記珪藻土を前記懸濁液又は水溶液から取り出す工程と、
を備え、
前記無機カルシウム化合物は硫酸カルシウム化合物であり、該硫酸カルシウム化合物の懸濁液又は水溶液の濃度は１〜１５質量％の範囲内であり、
前記珪藻土の大きさは平均粒子径が５０μｍ〜１０ｍｍの範囲内である、
被覆珪藻土の製造方法。 A step of preparing a diatomaceous earth having a predetermined size,
A step of preparing a suspension or an aqueous solution of an inorganic calcium compound,
Immersing the diatomaceous earth in a suspension or aqueous solution of the inorganic calcium compound,
Curing the film of the inorganic calcium compound attached to the surface of the diatomaceous earth,
Removing the diatomaceous earth with the film of the inorganic calcium compound attached from the suspension or aqueous solution,
Equipped with
The inorganic calcium compound is a calcium sulfate compound, and the concentration of the suspension or the aqueous solution of the calcium sulfate compound is in the range of 1 to 15% by mass,
The diatomaceous earth has an average particle size in the range of 50 μm to 10 mm .
Method for producing coated diatomaceous earth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016019887A JP6742102B2 (en) | 2016-02-04 | 2016-02-04 | Coated diatomaceous earth, product containing coated diatomaceous earth, and method for producing coated diatomaceous earth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016019887A JP6742102B2 (en) | 2016-02-04 | 2016-02-04 | Coated diatomaceous earth, product containing coated diatomaceous earth, and method for producing coated diatomaceous earth |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2017137220A JP2017137220A (en) | 2017-08-10 |
| JP6742102B2 true JP6742102B2 (en) | 2020-08-19 |
Family
ID=59564629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2016019887A Expired - Fee Related JP6742102B2 (en) | 2016-02-04 | 2016-02-04 | Coated diatomaceous earth, product containing coated diatomaceous earth, and method for producing coated diatomaceous earth |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP6742102B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102382011B1 (en) * | 2020-06-02 | 2022-03-31 | 한국세라믹기술원 | Core-shell porous ceramic balls and method of fabricating porous |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006034797A (en) * | 2004-07-29 | 2006-02-09 | Panahome Corp | Bathroom rug |
| JP2007063084A (en) * | 2005-09-01 | 2007-03-15 | Shoji Seike | Diatom earth solidified body and solidifying method |
| JP3195146U (en) * | 2014-10-01 | 2015-01-08 | 有限会社城崎デザイン研究所 | Water absorbent products |
-
2016
- 2016-02-04 JP JP2016019887A patent/JP6742102B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2017137220A (en) | 2017-08-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2013534206A (en) | Paste composition for manufacturing artificial stone and method for manufacturing artificial stone using the same | |
| JP2005046732A (en) | Method for manufacturing phosphorus adsorbent | |
| EP3403818A1 (en) | Heat insulating moulded body comprising a porous substrate | |
| JP4841912B2 (en) | Magnesium oxide powder for soil hardening material | |
| JP6742102B2 (en) | Coated diatomaceous earth, product containing coated diatomaceous earth, and method for producing coated diatomaceous earth | |
| JP2002080284A (en) | Inorganic porous body | |
| WO2002068184A1 (en) | Water-repellent and vapor-permeable multilayer material for outdoor applications | |
| JP2007063084A (en) | Diatom earth solidified body and solidifying method | |
| EP3601190A1 (en) | Compressed salt objects | |
| JP2016155719A (en) | Method for manufacturing porous gypsum hardened body and water purifying material | |
| JP2001198208A (en) | Calcium phosphate type biocompatible ceramic sintered body and method of manufacturing the same | |
| JP4009619B2 (en) | Building material and method of manufacturing building material | |
| JP4644561B2 (en) | Pavement injection material and water retentive pavement | |
| JP5354577B2 (en) | Phosphorous adsorbent and production method | |
| JP2007054732A (en) | Sewage treatment material and its production method | |
| JP4436209B2 (en) | Foamed silica gel and method for producing the same | |
| JP4794495B2 (en) | Manufacturing method of wall surface coating material using Otani stone and wall surface coating material manufactured by the method | |
| EP1236566A1 (en) | Water-repellent and vapour permeable multilayer composite sheet for exterior use | |
| JP3873085B2 (en) | Calcium phosphate porous sintered body and method for producing the same | |
| JP6545637B2 (en) | Zeolite-containing hardened body and method for producing zeolite-containing hardened body | |
| JP3116507B2 (en) | Heavy metal ion adsorbent and method for producing the same | |
| JP4082660B2 (en) | Zeolite-added granulated product and method for producing the same | |
| JP2014132867A (en) | Isolated floor-placement container for culturing crop and the like | |
| KR102629943B1 (en) | Eco-friendly deicing composition and methode for preparing the same | |
| JP2002097087A (en) | Moisture controlling building material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20181225 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20191007 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20191015 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20191216 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20200428 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20200625 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20200714 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20200728 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 6742102 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| LAPS | Cancellation because of no payment of annual fees |