JP3006620B2 - Method for producing inorganic porous body - Google Patents
Method for producing inorganic porous bodyInfo
- Publication number
- JP3006620B2 JP3006620B2 JP585890A JP585890A JP3006620B2 JP 3006620 B2 JP3006620 B2 JP 3006620B2 JP 585890 A JP585890 A JP 585890A JP 585890 A JP585890 A JP 585890A JP 3006620 B2 JP3006620 B2 JP 3006620B2
- Authority
- JP
- Japan
- Prior art keywords
- dust
- porous body
- clay
- diatomaceous earth
- sand
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 44
- 239000000428 dust Substances 0.000 claims description 34
- 239000005909 Kieselgur Substances 0.000 claims description 19
- 239000004576 sand Substances 0.000 claims description 19
- 239000004927 clay Substances 0.000 claims description 18
- 238000010304 firing Methods 0.000 claims description 12
- 239000002994 raw material Substances 0.000 claims description 9
- 239000000440 bentonite Substances 0.000 claims description 5
- 229910000278 bentonite Inorganic materials 0.000 claims description 5
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 7
- 230000005484 gravity Effects 0.000 description 7
- 239000006227 byproduct Substances 0.000 description 4
- 238000001354 calcination Methods 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 229920002472 Starch Polymers 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 239000007849 furan resin Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 235000021384 green leafy vegetables Nutrition 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 229910052622 kaolinite Inorganic materials 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 229910052604 silicate mineral Inorganic materials 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Cultivation Of Plants (AREA)
- Road Paving Structures (AREA)
- Filtering Materials (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Description
【発明の詳細な説明】 （イ）産業上の利用分野 この発明は、無機多孔質体の製造方法に関する。The present invention relates to a method for producing an inorganic porous body.
この発明による無機多孔質体は、農業分野における土
壌改良材、園芸用培土、農薬担体、ペット産業や畜産分
野における吸着材、スポーツ関係におけるゴルフ場もし
くはテニスコートの土壌改質剤、排水処理分野における
濾過材、建築分野における骨材として有用なものであ
る。The inorganic porous material according to the present invention is a soil improvement material in the agricultural field, horticultural cultivation soil, an agricultural chemical carrier, an adsorbent in the pet industry and livestock fields, a soil modifier for golf courses or tennis courts in sports, and a wastewater treatment field. It is useful as a filtering material and an aggregate in the construction field.
（ロ）従来の技術及び発明が解決しようとする課題 従来、無機多孔質体としては、多数のものが知られて
いる。たとえば、カオリナイト質、木節粘土などの粘土
を採掘し、これに珪藻土を添加し、焼成して多孔質体と
されている。また、鉱山の選鉱廃滓に、珪藻土を添加、
焼成して多孔質体が作られている（特公昭57−27864号
参照）。これらの多孔質体の製造において、珪藻土の添
加量を増加さすと多孔質体となり易いが、強度の低下を
きたし、実用性に欠けることになる。逆に、珪藻土の添
加量を減少させると多孔質体となり難いので、添加量の
コントロールを厳密にすることが要求される。一方、上
記の焼成は、一般的に1100〜1200℃程度を必要とし、焼
成コストが高くなり工業的に多くの問題を抱えている。
なお、多孔質体とするために発泡剤を添加したり、また
おが屑や有機物質の添加も行われているが、何れもコス
ト高となっている。(B) Problems to be Solved by Conventional Techniques and Invention Conventionally, many inorganic porous bodies are known. For example, clays such as kaolinite and Kibushi clay are mined, diatomaceous earth is added to the clay, and the clay is fired to form a porous body. Also, diatomaceous earth was added to the mine tailings waste,
The porous body is made by firing (see Japanese Patent Publication No. 57-27864). In the production of these porous bodies, if the added amount of diatomaceous earth is increased, the porous body is likely to be formed, but the strength is reduced and the practicability is lacking. Conversely, if the added amount of diatomaceous earth is reduced, it becomes difficult to form a porous body, so that it is required to strictly control the added amount. On the other hand, the above calcination generally requires about 1100 to 1200 ° C., and the calcination cost is high, and there are many industrial problems.
In order to form a porous body, a foaming agent is added, and sawdust and an organic substance are also added.
（ハ）課題を解決するための手段 この発明は、原料として粘土、珪藻土、集塵ダストを
それぞれ適当量配合し、これを予め造粒し、加熱焼成し
て無機多孔質体を得る方法を提供するものである。(C) Means for Solving the Problems The present invention provides a method of mixing an appropriate amount of clay, diatomaceous earth, and dust dust as raw materials, granulating the granules in advance, and heating and calcining to obtain an inorganic porous body. Is what you do.
この発明における粘土とは、細かい含水ケイ酸塩鉱物
の集合体を意味する。この発明に好適に使用される粘土
には、山砂のような原砂から珪砂を製造する際の副産物
がある。この副産物は、通常原砂から10〜20％発生し、
その大部分は原砂を採掘したところに、廃棄物として埋
没しているのが現状である。従って、これを有効に利用
することは、経済的に有利であるばかりでなく、廃棄物
公害を防止する意味からも極めて価値がある。The clay in the present invention means an aggregate of fine hydrated silicate minerals. Clays preferably used in the present invention include by-products of producing silica sand from raw sand such as mountain sand. This by-product usually comes from raw sand 10-20%,
Most of it is buried as waste, where most of the raw sand is mined. Therefore, its effective use is not only economically advantageous but also extremely valuable in terms of preventing waste pollution.
一方、珪藻土は、多孔質にするための原料として、す
でに多く使用されているが、資源的に少なく、貴重な資
源であり、できるだけ使用量を減少させるのが望まし
い。この発明においては、珪藻土の一部又は全部を、集
塵ダストに替えて添加することにより、珪藻土のみを添
加した場合に比較し、資源面の節約に加え、品質面にお
いて優れたものが得られる知見に基づいてなされてい
る。On the other hand, diatomaceous earth is already used in many cases as a raw material for making it porous, but it is a scarce resource and a precious resource, and it is desirable to reduce the usage as much as possible. In the present invention, part or all of the diatomaceous earth is added in place of the dust collection dust, compared with a case where only diatomaceous earth is added, in addition to resource saving, excellent in quality can be obtained. It is based on knowledge.
集塵ダストとしては、鋳物砂の再生回収時に発生する
ものが好適に用いられる。すなわち、鋳物の生型（一般
に砂、ベントナイト、澱粉、石炭粉末から構成）を使用
後、粉砕、表面磨こうされ、鋳物砂を再生する際に生ず
る集塵ダストを用いることができる。また場合により、
有機鋳型（一般に砂、フラン樹脂から構成）を再生する
際に生ずる集塵ダストを用いることができる。この際
は、ベントナイトを添加したものを集塵ダスト源として
用いるのが好ましい。As the dust collection dust, dust generated at the time of reclaiming and recovering the casting sand is preferably used. That is, after using a green casting mold (generally composed of sand, bentonite, starch, and coal powder), it is possible to use dust collected when the casting sand is regenerated by grinding and polishing the surface. In some cases,
Dust collected when regenerating an organic mold (generally composed of sand and furan resin) can be used. At this time, it is preferable to use the one to which bentonite is added as a dust collection dust source.
この発明においては原料における粘土、珪藻土、集塵
ダストの配合割合量が重要である。粘土40〜99重量部に
対し、集塵ダストは１〜30重量部、好ましくは10〜20重
量部配合される。珪藻土は、粘土40〜99重量部に対し、
０〜30部、好ましくは０〜20重量部配合される。珪藻土
の添加は、必ずしも必要とせず、また上記の上限以上加
えても経済的もしくは技術効果のメリットがない。In the present invention, the mixing ratio of clay, diatomaceous earth, and dust dust in the raw material is important. Dust collected dust is added in an amount of 1 to 30 parts by weight, preferably 10 to 20 parts by weight, based on 40 to 99 parts by weight of the clay. Diatomaceous earth, for clay 40-99 parts by weight,
0 to 30 parts, preferably 0 to 20 parts by weight is blended. The addition of diatomaceous earth is not always necessary, and there is no economic or technical advantage even if it is added above the upper limit.
上記の原料は、加熱焼成に当たって、予め造粒され
る。その形状は特に限定されず、顆粒状、ペレット状、
球状などの何れかであってもよい。造粒方法は、公知の
方法を用いて行うことができる。The above-mentioned raw materials are granulated in advance in heating and firing. The shape is not particularly limited, granules, pellets,
It may be any one of a spherical shape and the like. The granulation method can be performed using a known method.
次いで、焼成は、この発明の方法によれば通常より低
温度領域たとえば800〜1000℃で十分である。1200℃の
ような高温領域で短い時間の焼成が考えられるが、上記
の低温度領域が好ましいことを見出している。この焼成
は、通常の焼成装置を用いて行うことができる。The calcination then suffices in the lower temperature range, e.g. Although firing for a short time in a high temperature region such as 1200 ° C. is conceivable, it has been found that the above low temperature region is preferable. This firing can be performed using a normal firing device.
この発明によって得られる多孔質体は、その形態を電
子顕微鏡で確認することができる。The morphology of the porous body obtained by the present invention can be confirmed with an electron microscope.
次にこの発明を実施例によって説明する。 Next, the present invention will be described with reference to examples.
（ニ）実施例 以下に用いた粘土は、京都府の原砂より副生した粘土
である。集塵ダストは生型より砂を再生する際に副生し
たものである。各原料の化学成分は、表１に示す通りで
ある。(D) Examples The clay used below is clay produced as a by-product from raw sand in Kyoto Prefecture. Dust collected is a by-product generated when sand is regenerated from a green mold. The chemical components of each raw material are as shown in Table 1.
比較例１ この発明の集塵ダストを添加しない場合の通常の骨材
の性状に及ぼす焼成温度の影響について検討した。 Comparative Example 1 The effect of the sintering temperature on the properties of ordinary aggregate when the dust-collected dust of the present invention was not added was examined.
嵩比重の測定は、10mmΦの球状品を成型し、これを各
温度で焼成後、測定した。多孔質体の嵩比重と気孔率と
は比例するものであるので、本試験では嵩比重で表示し
た。破壊強度の測定は、上記試料に荷重をかけ測定し
た。 The bulk specific gravity was measured by molding a spherical product having a diameter of 10 mm and firing it at each temperature. Since the bulk specific gravity and the porosity of the porous body are proportional to each other, they are represented by the bulk specific gravity in this test. The breaking strength was measured by applying a load to the sample.
表１の結果で明らかなように、粘土と珪藻土のみでは
多孔質とするための珪藻土の添加量が嵩比重から見て30
％を必要とし、また破壊荷重強度から見て1200℃の焼成
温度が要求される。As is clear from the results in Table 1, the amount of diatomaceous earth added to make it porous only with clay and diatomaceous earth was 30% in view of the bulk specific gravity.
% And a firing temperature of 1200 ° C. in view of the breaking load strength.
通常工業的には粘土と珪藻土とを原料にした多孔質体
の製造には、焼成温度1200〜1300℃で行っているが、か
かる高温焼成の必要なことは、上記からも実証される。Usually, industrially, the production of a porous body using clay and diatomaceous earth as raw materials is performed at a sintering temperature of 1200 to 1300 ° C., but the necessity of such high-temperature sintering is also proved from the above.
実施例１ 粘土、珪藻土、集塵ダストからなる原料を顆粒状に造
粒し、多孔質体の性状と焼成温度の影響を調べた。Example 1 A raw material consisting of clay, diatomaceous earth, and dust dust was granulated into granules, and the properties of the porous body and the effects of the firing temperature were examined.
表２の結果から、集塵ダストを添加した場合は、工業
的に優れた多孔質体が容易に得られ、強度の高い、しか
も嵩比重小さいものが、800〜1000℃の焼成温度でもっ
て製造することができた。 From the results in Table 2, when the dust collection dust is added, an industrially excellent porous body can be easily obtained, and the one having high strength and small bulk specific gravity is manufactured at a firing temperature of 800 to 1000 ° C. We were able to.
かりに工業的骨材としては、嵩比重1.3以下で、破壊
荷重強度70Kg/個以上が多孔質体の基準とした場合、こ
の発明の集塵ダストの効果は大きく優れた添加材である
ことが分かる。As an industrial aggregate, when the bulk specific gravity is 1.3 or less and the breaking load strength is 70 kg / piece or more as the standard of the porous body, the effect of the dust collecting dust of the present invention is a great and excellent additive. .
この作用は、集塵ダストに含まれる残留ベントナイト
が強度を高め、残留石炭粉及び澱粉が多孔質化を促進し
たためと考えられる。This action is considered to be due to the fact that the residual bentonite contained in the dust collected increased the strength, and the residual coal powder and starch promoted the porosity.
実施例２ この発明の集塵ダストの効果を、更に詳細に知るため
に焼成温度900℃での添加量を変えた場合の性状を調べ
た。Example 2 In order to know the effect of the dust collection dust of the present invention in more detail, properties when the amount of addition at a firing temperature of 900 ° C. was changed were examined.
表３の結果から、集塵ダストの添加量を増加するに従
って嵩比重を大きくすることなく骨材の強度が高くな
り、その効果は極めて優秀である。 From the results shown in Table 3, the strength of the aggregate is increased without increasing the bulk specific gravity as the added amount of the dust collection dust is increased, and the effect is extremely excellent.
珪藻土の添加をしなくても集塵ダスト20％添加、900
℃の焼成温度で多孔質骨材の性状を満足させることが出
来る。Adds 20% dust collection without adding diatomaceous earth, 900
The properties of the porous aggregate can be satisfied at the firing temperature of ° C.
（ホ）発明の効果 以上の説明から明らかなように、この発明にかかる多
孔質体は、従来産業廃棄物として処理されていた山砂等
の原砂から珪砂を製造する時に分離離発生する粘土、珪
藻土、鋳物砂の再生回収時の集塵ダストとから構成さ
れ、安価で且つ性状の優れたものを工業的に得ることが
でき、その効果は大きい。(E) Effects of the Invention As is clear from the above description, the porous body according to the present invention is a clay which is separated and generated when producing silica sand from raw sand such as mountain sand which has been conventionally treated as industrial waste. Diatomaceous earth, and dust collected during the recovery and recovery of foundry sand can be industrially obtained at low cost and with excellent properties, and the effect is great.
また用途としてゴルフ場のグリーンに用いた場合、鋳
物砂の再生回収時の集塵ダストに含まれるベントナイト
のモンモリナイト系粘土鉱物が芝の育成に役立つと言わ
れていることから、この発明の多孔質体は極めてその効
果は大きい。Also, when used for golf course greens as a use, it is said that the bentonite montmorillonite-based clay mineral contained in the dust collected during the recovery and recovery of foundry sand is useful for growing turf. The body is extremely effective.
Claims (3)
少なくともベントナイトを含む集塵ダスト１〜30重量部
からなる原料を造粒し、ついで800〜1000℃で加熱焼成
して無機多孔質体を得ることを特徴とする無機多孔質体
の製造方法。1. 40 to 99 parts by weight of clay, 0 to 30 parts by weight of diatomaceous earth,
A method for producing an inorganic porous body, comprising granulating a raw material comprising 1 to 30 parts by weight of dust dust containing at least bentonite, and then heating and firing at 800 to 1000 ° C to obtain an inorganic porous body.
量部、集塵ダスト10〜20重量部からなる請求項１記載の
方法。2. The method according to claim 1, wherein the raw material comprises 60 to 90 parts by weight of clay, 0 to 20 parts by weight of diatomaceous earth, and 10 to 20 parts by weight of dust collected.
る時に発生した粘土である請求項１又は２記載の方法。3. The method according to claim 1, wherein the clay is clay produced during the production of silica sand from raw sand such as mountain sand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP585890A JP3006620B2 (en) | 1990-01-12 | 1990-01-12 | Method for producing inorganic porous body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP585890A JP3006620B2 (en) | 1990-01-12 | 1990-01-12 | Method for producing inorganic porous body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03215373A JPH03215373A (en) | 1991-09-20 |
| JP3006620B2 true JP3006620B2 (en) | 2000-02-07 |
Family
ID=11622676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP585890A Expired - Fee Related JP3006620B2 (en) | 1990-01-12 | 1990-01-12 | Method for producing inorganic porous body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3006620B2 (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5776353A (en) * | 1996-02-16 | 1998-07-07 | Advanced Minerals Corporation | Advanced composite filtration media |
| JPH05287751A (en) * | 1992-04-06 | 1993-11-02 | Toko Kensetsu Kk | Vegetation base material |
| EP0617993A1 (en) * | 1993-03-29 | 1994-10-05 | Lukopat Ag | Microfilter disc and process for its production |
| KR20010016633A (en) * | 2000-12-30 | 2001-03-05 | 유한웅 | Method for manufacturing a porous sinter-ceramic |
| JP2006315925A (en) * | 2005-05-13 | 2006-11-24 | Nippon Home Products Kk | Ceramic using diatom earth as material and method of manufacturing the same |
| JP5246991B2 (en) * | 2005-06-20 | 2013-07-24 | 慶一 杉野 | Pavement structure using diatom shale |
| RU2472727C1 (en) * | 2011-09-30 | 2013-01-20 | Юлия Алексеевна Щепочкина | Mixture for producing porous aggregate |
| RU2472728C1 (en) * | 2011-09-30 | 2013-01-20 | Юлия Алексеевна Щепочкина | Mixture for producing porous aggregate |
| RU2507168C1 (en) * | 2012-10-05 | 2014-02-20 | Юлия Алексеевна Щепочкина | Charge for production of porous filling agent |
| JP5719464B1 (en) * | 2013-10-31 | 2015-05-20 | 有限会社ソルチ | Ware making method and ware |
| JP7064126B2 (en) * | 2017-09-27 | 2022-05-10 | 群馬県 | Granulated soil |
| CN110683839A (en) * | 2019-10-25 | 2020-01-14 | 深圳麦克韦尔科技有限公司 | Porous ceramic and preparation method and application thereof |
-
1990
- 1990-01-12 JP JP585890A patent/JP3006620B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03215373A (en) | 1991-09-20 |
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