JP2997168B2 - Soil conditioner, water purification material and artificial soil for plant growth - Google Patents
Soil conditioner, water purification material and artificial soil for plant growthInfo
- Publication number
- JP2997168B2 JP2997168B2 JP21672494A JP21672494A JP2997168B2 JP 2997168 B2 JP2997168 B2 JP 2997168B2 JP 21672494 A JP21672494 A JP 21672494A JP 21672494 A JP21672494 A JP 21672494A JP 2997168 B2 JP2997168 B2 JP 2997168B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- sintered body
- mesh
- sand
- porous sintered
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
- C04B18/023—Fired or melted materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00758—Uses not provided for elsewhere in C04B2111/00 for agri-, sylvi- or piscicultural or cattle-breeding applications
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Cultivation Of Plants (AREA)
- Treatment Of Liquids With Adsorbents In General (AREA)
- Water Treatment By Sorption (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、多孔質焼結体からな
る、土壌改良材、水質浄化材及び植物生育用人工土壌に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soil improvement material, a water purification material and an artificial soil for growing plants, which are made of a porous sintered body.
【０００２】[0002]
【従来の技術】近年、環境問題に対する関心が高まり、
我国においても産業界、学界、官界挙げてその対策に取
り組んでいる。具体的には、廃棄物処理・リサイクルな
どに関する立法措置が講じられ、それに応じて企業にお
いても環境保全と経済性の確保との調和を図るための革
新的な技術開発が求められている。2. Description of the Related Art In recent years, interest in environmental issues has increased,
In Japan as well, the industry, academia and government are working on countermeasures. Specifically, legislative measures regarding waste treatment and recycling have been taken, and accordingly, companies have been required to develop innovative technologies to achieve harmony between environmental protection and economic efficiency.
【０００３】鋳物業界においても、鋳造工程において、
使用済み鋳物砂型を開枠した砂が多量に発生する。これ
らの砂は再生処理して、約半分を再生鋳物砂としてリサ
イクルしている。残りの約半分は再生処理により鋳物砂
としては再利用できない微粉砂となるため、埋め立て処
理などにより処分していた。[0003] In the casting industry, in the casting process,
A large amount of sand from the used foundry sand mold is opened. These sands are recycled and about half are recycled as recycled foundry sand. The remaining half is fine sand that cannot be reused as foundry sand due to the regeneration treatment, and has been disposed of by landfill treatment.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、使用済
み鋳物砂型を開枠して生ずる再利用できないこのような
微粉砂を埋め立て処理などするためにはかなりの費用を
要するだけでなく、埋め立て場所にも限界がある。一
方、多孔性の焼結セラミックとして、例えば、特開平６
−９２８０号公報には軟質多孔性古代海洋腐植質とＳｉ
6 Ｏ18とを含む焼成バイオセラミックが開示されてお
り、また、特開平５−８６３６９号公報には天然ゼオラ
イトの高温焼結体からなる土壌改良材が開示されている
が、これらはいずれももともと多孔質の天然材料を焼成
して得られる多孔質焼結体であり、これらの原料は使用
済みの廃棄物として処分されるべきものではない。However, landfilling of such non-reusable fine sand generated by opening a used casting sand mold not only requires a considerable cost, but also requires a landfill site. There is a limit. On the other hand, as a porous sintered ceramic, for example,
No. 9280 discloses soft porous ancient marine humus and Si.
A fired bioceramic containing 6 O 18 is disclosed, and Japanese Unexamined Patent Publication No. 5-86369 discloses a soil improvement material comprising a high-temperature sintered body of natural zeolite. It is a porous sintered body obtained by firing a porous natural material, and these raw materials should not be disposed of as used waste.
【０００５】本発明は、使用済み鋳物砂型の開枠の際に
廃棄物として多量に生成する微粉砂を使用して、気孔が
均一に分布しており、強度、通気性及び保水性に優れ、
無菌で安全性の高い焼結体からなる、土壌改良材、水質
浄化材及び植物生育用人工土壌を提供することを目的と
する。[0005] The present invention uses fine sand, which is generated as a large amount of waste when the used molding sand mold is opened, has a uniform distribution of pores, and is excellent in strength, air permeability and water retention.
An object of the present invention is to provide a soil improvement material, a water purification material, and an artificial soil for plant growth, which are made of a sterile and highly safe sintered body.
【０００６】[0006]
【課題を解決するための手段】前記目的を達成するため
に、本発明は、使用済み鋳物砂型由来のＳｉＯ2 含有量
７５．０〜８５．０重量％、約１４０メッシュ以下の微
粉砂に水を加えて混練し成形した成形物を焼成して得ら
れる通気度２０〜１００、気孔率２５〜４５％、破壊強
度５ｋｇ以上の多孔質焼結体からなることを特徴とする
土壌改良材である。In order to achieve the above-mentioned object, the present invention relates to a method for producing a fine sand having a SiO 2 content of 75.0 to 85.0% by weight and a mesh size of about 140 mesh or less from a used foundry sand mold. A soil improving material comprising a porous sintered body having an air permeability of 20 to 100, a porosity of 25 to 45%, and a breaking strength of 5 kg or more, which is obtained by calcining a molded product obtained by adding, kneading and kneading. .
【０００７】本発明は、使用済み鋳物砂型由来のＳｉＯ
2 含有量７５．０〜８５．０重量％、約１４０メッシュ
以下の微粉砂に水を加えて混練し成形した成形物を乾燥
し、次いで焼成して得られる通気度２０〜１００、気孔
率２５〜４５％、破壊強度５ｋｇ以上の多孔質焼結体か
らなることを特徴とする土壌改良材である。[0007] The present invention relates to a method for producing SiO 2 from a used foundry sand mold.
2 Water is added to fine powder sand having a content of 75.0 to 85.0% by weight and about 140 mesh or less, which is kneaded, and the molded product is dried and then fired to obtain a gas permeability of 20 to 100 and a porosity of 25. A soil improving material comprising a porous sintered body having a porosity of about 45% and a breaking strength of 5 kg or more.
【０００８】本発明は、使用済み鋳物砂型由来のＳｉＯ
2 含有量７５．０〜８５．０重量％、約１４０メッシュ
以下の微粉砂に水を加えて混練し成形した成形物を焼成
して得られる通気度２０〜１００、気孔率２５〜４５
％、破壊強度５ｋｇ以上の多孔質焼結体からなることを
特徴とする水質浄化材である。[0008] The present invention relates to a method for forming a SiO from a used foundry sand mold.
2 Water content is added to fine powder sand having a content of 75.0 to 85.0% by weight, about 140 mesh or less, kneaded and molded, and a molded product is fired, and the air permeability is 20 to 100, and the porosity is 25 to 45.
%, A water purification material comprising a porous sintered body having a breaking strength of 5 kg or more.
【０００９】本発明は、使用済み鋳物砂型由来のＳｉＯ
2 含有量７５．０〜８５．０重量％、約１４０メッシュ
以下の微粉砂に水を加えて混練し成形した成形物を乾燥
し、次いで焼成して得られる通気度２０〜１００、気孔
率２５〜４５％、破壊強度５ｋｇ以上の多孔質焼結体か
らなることを特徴とする水質浄化材である。[0009] The present invention relates to a method for producing SiO from a used foundry sand mold.
2 Water is added to fine powder sand having a content of 75.0 to 85.0% by weight and about 140 mesh or less, which is kneaded, and the molded product is dried and then fired to obtain a gas permeability of 20 to 100 and a porosity of 25. A water purification material comprising a porous sintered body having a porosity of about 45% and a breaking strength of 5 kg or more.
【００１０】本発明は、使用済み鋳物砂型由来のＳｉＯ
2 含有量７５．０〜８５．０重量％、約１４０メッシュ
以下の微粉砂に水を加えて混練し成形した成形物を焼成
して得られる通気度２０〜１００、気孔率２５〜４５
％、破壊強度５ｋｇ以上の多孔質焼結体からなることを
特徴とする植物生育用人工土壌である。[0010] The present invention relates to a method for producing SiO from a used foundry sand mold.
2 Water content is added to fine powder sand having a content of 75.0 to 85.0% by weight, about 140 mesh or less, kneaded and molded, and a molded product is fired, and the air permeability is 20 to 100, and the porosity is 25 to 45.
%, Comprising a porous sintered body having a breaking strength of 5 kg or more.
【００１１】本発明は、使用済み鋳物砂型由来のＳｉＯ
2 含有量７５．０〜８５．０重量％、約１４０メッシュ
以下の微粉砂に水を加えて混練し成形した成形物を乾燥
し、次いで焼成して得られる通気度２０〜１００、気孔
率２５〜４５％、破壊強度５ｋｇ以上の多孔質焼結体か
らなることを特徴とする植物生育用人工土壌である。[0011] The present invention relates to a method for producing SiO from a used foundry sand mold.
2 Water is added to fine powder sand having a content of 75.0 to 85.0% by weight and about 140 mesh or less, which is kneaded, and the molded product is dried and then fired to obtain a gas permeability of 20 to 100 and a porosity of 25. An artificial soil for growing a plant, comprising a porous sintered body having a porosity of about 45% and a breaking strength of 5 kg or more.
【００１２】[0012]
【発明の実施の形態】本発明における多孔質焼結体の製
造に使用される微粉砂は、使用済み鋳物砂型の開枠の際
及びそれによって生ずる砂の再生処理の際に得られる微
細な砂であって、鋳物砂として再使用できないほど微細
な砂である。一般に鋳物砂型には、硅砂、粘土、殿粉、
植物性油、炭素などから形成される生砂型と、硅砂、有
機バインダー樹脂から形成される有機砂型がある。鋳造
工程に使用された砂型は開枠され、また再生処理され
て、得られる約１４０メッシュ以下、好ましくは２００
メッシュ以下の微細な砂が、本発明における多孔質焼結
体の原料として使用される。この微細粉には、生砂型の
みから得られるものの他に、これと少量の有機砂型から
得られるものとの混合物を含み、鉱物成分として、Ｓｉ
Ｏ2 ７５．０〜８５．０重量％、Ａｌ2 Ｏ3 ６．０〜１
３．０重量％、Ｆｅ2 Ｏ3 １．０〜３．０重量％、Ｎａ
2 Ｏ１．０〜２．５重量％、Ｋ2 Ｏ０．５〜１．０重量
％、ＣａＯ１．０〜２．０重量％、ＭｇＯ１．０〜３．
０重量％、ＴｉＯ2 ０．１〜０．３重量％を含み、ま
た、その他の成分として、有機バインダー樹脂、殿粉、
植物性油、炭素などを鉱物成分の合計１００重量部に対
し合計で２．４〜３．６重量部含有している。ＳｉＯ2
以外の鉱物成分は焼成すると一部溶融し、またその他の
成分は一部燃焼して通気性の多孔性焼結体を形成する。BEST MODE FOR CARRYING OUT THE INVENTION The fine sand used in the production of a porous sintered body according to the present invention is a fine sand obtained when the used molding sand mold is opened and when the resulting sand is regenerated. It is a fine sand that cannot be reused as foundry sand. In general, casting sand molds include silica sand, clay, starch,
There are a green sand type formed from vegetable oil and carbon, and an organic sand type formed from silica sand and organic binder resin. The sand mold used in the casting process is opened and reprocessed to obtain about 140 mesh or less, preferably 200 mesh or less.
Fine sand having a mesh or less is used as a raw material of the porous sintered body in the present invention. This fine powder includes, in addition to the powder obtained from the green sand mold alone, a mixture of the powder obtained from the organic sand mold with a small amount thereof, and as a mineral component, Si
O 2 from 75.0 to 85.0 wt%, Al 2 O 3 6.0~1
3.0% by weight, Fe 2 O 3 1.0 to 3.0% by weight, Na
2 O1.0～2.5 wt%, K 2 O0.5~1.0 wt%, CaO1.0~2.0 wt%, MgO1.0~3.
0 wt%, wherein the TiO 2 0.1 to 0.3 wt%, and as other components, an organic binder resin, starch,
It contains a total of 2.4 to 3.6 parts by weight of vegetable oil, carbon, etc. based on 100 parts by weight of the total of the mineral components. SiO 2
The other mineral components are partially melted when fired, and the other components are partially burned to form a gas-permeable porous sintered body.
【００１３】本発明における多孔質焼結体の製造におい
て、前記微粉砂にはまず水を加えて混練し、目的に応じ
所定の大きさ、形状（粒状、カプセル状、球状など）に
成形する。水は微粉砂を所定の形状を保持することがで
きる必要量添加する。成形物は、好ましくは自然乾燥あ
るいは熱などにより強制乾燥した後、電気炉、重油炉な
どで好ましくは６００〜１１００℃、特に好ましくは８
００〜１０００℃で所定時間（例えば５０〜７０分間）
焼成する。得られる焼結体は、通気度２５〜１００、気
孔率２５〜４５％、圧縮強さ（破壊強度）は６００℃で
焼成したもの５〜１０ｋｇ、８００〜１０００℃で焼成
したもの２０ｋｇ以上の多孔質で強度の高い焼結体であ
る。In the production of the porous sintered body according to the present invention, water is first added to the fine powder sand and kneaded, and the sand is formed into a predetermined size and shape (granular, capsule-like, spherical, etc.) according to the purpose. Water is added in an amount necessary to maintain the predetermined shape of the fine sand. The molded product is preferably air-dried or forcibly dried by heat or the like, and then preferably heated to 600 to 1100 ° C., particularly preferably 8 to 100 ° C. in an electric furnace or a heavy oil furnace.
A predetermined time at 00 to 1000 ° C (for example, 50 to 70 minutes)
Bake. The resulting sintered body has a permeability of 25 to 100, a porosity of 25 to 45%, a compressive strength (breaking strength) of 5 to 10 kg fired at 600 ° C, and a porosity of 20 kg or more fired at 800 to 1000 ° C. It is a high quality and high strength sintered body.
【００１４】前記多孔質焼結体からなる本発明の水質浄
化材は、水槽、池、沼、湖、河川などに単に投入してお
くだけでも水質を改善することができるが、水流を生じ
させたり、あるいは水を循環させることにより水を水質
浄化材に更に接触しやすくさせるのが水質浄化に効率的
である。水質浄化材の使用量は浄化する水の水質により
著しく異なるが、使用量が多ければ多いほどＢＯＤ（生
物化学的酸素要求量）、ＣＯＤ（化学的酸素要求量）、
浮遊物質量、色度、濁度などを改善することができ、ま
た、ｐＨを弱アルカリ側に調整することができる。The water purification material of the present invention composed of the porous sintered body can improve water quality simply by being put into a water tank, pond, swamp, lake, river, or the like. It is efficient for water purification to make the water more easily contact the water purification material by circulating or circulating the water. The amount of water purification material used varies significantly depending on the quality of the water to be purified, but the larger the amount used, the more BOD (biochemical oxygen demand), COD (chemical oxygen demand),
The amount of suspended substances, chromaticity, turbidity, etc. can be improved, and the pH can be adjusted to a slightly alkaline side.
【００１５】前記多孔質焼結体からなる本発明の土壌改
良材あるいは植物生育用人工土壌は、高い強度、優れた
通気性、保水性、保肥性や、ミネラル分の要求される芝
育成用、家庭菜園用、鉢植え用などの他、一般農地など
にも土壌に配合してあるいはその代替として使用するこ
とができる。The soil improving material or artificial soil for plant growth of the present invention comprising the porous sintered body is suitable for turf cultivation which is required to have high strength, excellent air permeability, water retention, fertilization and mineral content. In addition to home gardens, potted plants, and the like, it can also be used in general farmland and the like by blending it with soil or as an alternative.
【００１６】[0016]
【実施例】以下、実施例により本発明を更に詳細に説明
する。なお実施例および比較例において、「％」は「重
量％」を意味する。 実施例１ 使用済み有機砂型からの２００メッシュ以下の微粉砂
（集塵ダスト）２％と使用済み生砂型からの２００メッ
シュ以下の微粉砂（集塵ダスト）９８％との混合微細砂
（有機バインダー樹脂、殿粉、植物性油、炭素などを鉱
物成分１００ｇに対し合計で２．５７ｇ含有）１０００
ｇに対し、水を１８０ｍｌの割合で加えて、ニーダーで
均一に混練した。次いで、スクリュー式の押し出し機で
混練物を押し出し、造粒機で平均粒径１．０〜１．５ｃ
ｍのほぼ球状体に成形した。この成形物を常温で一昼夜
乾燥し、更に電気炉中で８００℃にて７０分間焼成し
て、多孔質焼結体を製造した。得られた多孔質焼結体の
粒子構造（多孔質構造）の顕微鏡写真（５倍拡大写真）
を図１に、電子顕微鏡写真（ＥＰＭＡ、７０倍拡大写
真）を図２に示す。得られた多孔質焼結体の特性を以下
に示す。The present invention will be described in more detail with reference to the following examples. In Examples and Comparative Examples, “%” means “% by weight”. Example 1 Mixed fine sand (organic binder) of 2% of fine sand (dust collection dust) of 200 mesh or less from used organic sand mold and 98% of fine sand (dust dust) of 200 mesh or less from used green sand mold Resin, starch, vegetable oil, carbon, etc. contain 2.57 g in total with respect to 100 g of mineral components) 1000
Water was added at a ratio of 180 ml to the g, and kneaded uniformly with a kneader. Next, the kneaded material was extruded with a screw-type extruder, and the average particle size was 1.0 to 1.5 c with a granulator.
m. This molded product was dried at room temperature for 24 hours, and further baked at 800 ° C. for 70 minutes in an electric furnace to produce a porous sintered body. Micrograph (5x magnification) of the particle structure (porous structure) of the obtained porous sintered body
Is shown in FIG. 1, and an electron micrograph (EPMA, 70-fold enlarged photograph) is shown in FIG. The characteristics of the obtained porous sintered body are shown below.
【００１７】 化学組成：ＳｉＯ2 ７５．５％、Ａｌ2 Ｏ3 １２．７％、Ｆｅ2 Ｏ3 ２．８９ ％、ＴｉＯ2 ０．１５％、Ｎａ2 Ｏ２．１１％、Ｋ2 Ｏ０．６６％ 、ＣａＯ１．４８％、ＭｇＯ２．８６％、その他１．６５％ 平均粒径：０．９〜１．５ｃｍ 比重：１．２０ ｐＨ：８．１ 通気度：８７ 気孔率：４４（容積）％ 圧縮強さ（破壊強度）：２４ｋｇ 水分：０．１％Chemical composition: 75.5% SiO 2 , 12.7% Al 2 O 3 , 2.89% Fe 2 O 3 , 0.15% TiO 2 , 2.11% Na 2 O, 0.66 K 2 O %, CaO 1.48%, MgO 2.86%, others 1.65% Average particle size: 0.9 to 1.5 cm Specific gravity: 1.20 pH: 8.1 Air permeability: 87 Porosity: 44 (volume)% Compressive strength (breaking strength): 24 kg Water: 0.1%
【００１８】自社内用水（地下水及び工業用水を主体と
したもの、以下同じ）から採取した水４０リットルに対
し、上記で得られた多孔質焼結体を１５００ｇの割合で
使用し、常温で３０日間水を攪拌した。そして、３０日
間浄化した水１０リットルを別の水槽にとり、前記多孔
質焼結体を５００ｇ加えて、更に常温で２４時間水を攪
拌した。これらの水質の測定結果をまとめて次の表１に
示す。なお、ｐＨ、ＢＯＤ、ＣＯＤ、透視度はＪＩＳ−
ＫＯ１０２の方法に準じて測定した。The porous sintered body obtained above was used in an amount of 1500 g per 40 liters of water collected from in-house water (mainly groundwater and industrial water, the same applies hereinafter). The water was stirred for days. Then, 10 liters of purified water for 30 days was placed in another water tank, 500 g of the porous sintered body was added, and the water was further stirred at room temperature for 24 hours. The results of these water quality measurements are summarized in Table 1 below. In addition, pH, BOD, COD, and transparency are JIS-
It measured according to the method of KO102.
【００１９】[0019]
【表１】 [Table 1]
【００２０】内容積２、５リットルの植木鉢中で、前記
多孔質焼結体２０００ｇに水を補給しながら、こちょう
ランを栽培したところ、こちょうランは根ぐされを起こ
さず８ケ月以上良好に栽培することができ花を咲かせて
いた。なお一般的には、こちょうランは３カ月程で花は
散ってしまう。When orchid orchids were cultivated in a flower pot having an internal volume of 2 or 5 liters while supplying water to 2000 g of the porous sintered body, the orchid orchids were satisfactorily maintained for 8 months or more without rooting. They could be cultivated and bloomed. In general, flowers of the orchid orchid fall in about three months.
【００２１】実施例２ 使用済み生砂型からの１４０メッシュ以下の微粉砂（集
塵ダスト）（殿粉、植物性油、炭素などを鉱物成分１０
０ｇに対し合計で２．４１ｇ含有）１０００ｇに対し、
水を１５０ｍｌの割合で加えて、ニーダーで均一に混練
した。次いで、スクリュー式の押し出し機で混練物を押
し出し、造粒機で平均粒径０．１〜０．３ｃｍの粒状体
に成形した。この成形物を電気炉中で１０００℃にて５
０分間焼成して、多孔質焼結体を製造した。得られた多
孔質焼結体の粒子構造（多孔質構造）の顕微鏡写真（１
２倍拡大写真）を図３に、電子顕微鏡写真（ＥＰＭＡ、
７０倍拡大写真）を図４に示す。得られた多孔質焼結体
の特性を以下に示す。Example 2 Fine-grained sand (dust collection dust) of 140 mesh or less from a used green sand mold (starch, vegetable oil, carbon, etc.
(Includes 2.41 g in total for 0 g) For 1000 g,
Water was added at a rate of 150 ml and kneaded uniformly with a kneader. Next, the kneaded material was extruded with a screw-type extruder, and formed into granules having an average particle diameter of 0.1 to 0.3 cm with a granulator. This molded product is placed in an electric furnace at 1000 ° C. for 5 minutes.
By firing for 0 minutes, a porous sintered body was manufactured. Micrograph (1) of the particle structure (porous structure) of the obtained porous sintered body
FIG. 3 shows an electron micrograph (EPMA,
FIG. 4 shows a 70-times enlarged photograph. The characteristics of the obtained porous sintered body are shown below.
【００２２】 化学組成：ＳｉＯ2 ８０．１％、Ａｌ2 Ｏ3 １０．２％、Ｆｅ2 Ｏ3 ２．７０ ％、ＴｉＯ2 ０．２０％、Ｎａ2 Ｏ１．７４％、Ｋ2 Ｏ０．９６％ 、ＣａＯ１．３７％、ＭｇＯ１．６６％、その他１．０７％ 平均粒径：０．０８〜０．３ｃｍ 比重：１．２２ ｐＨ：８．０ 通気度：５９ 気孔率：３８（容積）％ 圧縮強さ（破壊強度）：３１ｋｇ 水分：０．１％Chemical composition: SiO 2 80.1%, Al 2 O 3 10.2%, Fe 2 O 3 2.70%, TiO 2 0.20%, Na 2 O 1.74%, K 2 O 0.96 %, CaO 1.37%, MgO 1.66%, others 1.07% Average particle size: 0.08 to 0.3cm Specific gravity: 1.22 pH: 8.0 Air permeability: 59 Porosity: 38 (volume)% Compressive strength (breaking strength): 31kg Water: 0.1%
【００２３】自社内用水から採取した水４０リットルに
対し、上記で得られた多孔質焼結体を１５００ｇの割合
で使用し、常温で３０日間水を攪拌した。そして、３０
日間浄化した水１０リットルを別の水槽にとり、前記多
孔質焼結体を５００ｇ加えて、更に常温で２４時間水を
攪拌した。これらの水質の測定結果をまとめて次の表２
に示す。なお、ｐＨ、ＢＯＤ、ＣＯＤ、透視度はＪＩＳ
−ＫＯ１０２の方法に準じて測定した。The porous sintered body obtained above was used in an amount of 1500 g with respect to 40 liters of water collected from in-house water, and the water was stirred at room temperature for 30 days. And 30
10 liters of purified water for another day was placed in another water tank, 500 g of the porous sintered body was added, and the water was further stirred at room temperature for 24 hours. Table 2 summarizes the results of these water quality measurements.
Shown in In addition, pH, BOD, COD, and transparency are JIS
-Measured according to the method of KO102.
【００２４】[0024]
【表２】 [Table 2]
【００２５】内容積２０００ｃｍ3 のガラス瓶中で、前
記多孔質焼結体１０００ｇに水を補給しながら、おりづ
るランを栽培したところ、おりづるランは根ぐされを起
こさず成長し６ケ月以上良好に栽培することができ花を
咲かせていた。The orchid orchid was cultivated in a glass bottle having an internal volume of 2000 cm 3 while replenishing water to 1000 g of the porous sintered body. The orchid orchid grew without rooting and was favorably grown for 6 months or more. They could be cultivated and bloomed.
【００２６】内容量４０００ｃｍ3 の水槽中で水道水
３．５リットルに対して前記多孔質焼結体を７０００ｇ
の割合で使用して市販の金魚用のえさにより金魚５匹を
養殖した。金魚は１年養殖後に約４．５倍の大きさに成
長し、１年以上養殖することができた。また、水槽中の
水は１年間かえなくても濁り、臭いはわずかであった。In a water tank having a capacity of 4000 cm 3 , 7000 g of the porous sintered body was added to 3.5 liters of tap water.
5 goldfish were cultivated using commercially available feed for goldfish. The goldfish grew to about 4.5 times the size after cultivation for one year and could be cultivated for more than one year. Further, the water in the aquarium was turbid even if it was not changed for one year, and the odor was slight.
【００２７】比較例 下記組成及び性質の使用済み鋳物砂型由来の２００メッ
シュ以下の微粉砂を使用して、実施例２の方法と同様に
しておりづるランを栽培したが、根ぐされを生じ約１カ
月後に枯れてしまった。また上記微粉砂を使用して、実
施例２の方法と同様にして金魚５匹を養殖したが水槽中
の水の濁り、臭いがはなはだしく、半月以内に金魚はす
べて死滅した。 化学組成：ＳｉＯ2 ７５．１２％、Ａｌ2 Ｏ3 １２．２５％、Ｆｅ2 Ｏ3 ２． ８８％、ＴｉＯ2 ０．１５％、Ｎａ2 Ｏ２．１２％、Ｋ2 Ｏ０．６ ５％、ＣａＯ１．４７％、ＭｇＯ２．８４％、その他２．５２％ 比重：１．２５ ｐＨ：８〜９ 通気度：１０以下 気孔率：５（容積）％以下 水分：５．５％COMPARATIVE EXAMPLE A orchid was cultivated in the same manner as in Example 2 using fine powder sand of 200 mesh or less derived from a used foundry sand mold having the following composition and properties. Months later withered. Five goldfishes were cultivated in the same manner as in Example 2 using the above-mentioned fine sand, but the water in the aquarium became cloudy and the smell was remarkable, and all the goldfish died within half a month. Chemical composition: SiO 2 75.12%, Al 2 O 3 12.25%, Fe 2 O 3 2. 88%, TiO 2 0.15%, Na 2 O 2.12%, K 2 O 0.65%, CaO 1.47%, MgO 2.84%, other 2.52% Specific gravity: 1.25 pH: 8-9 Air permeability: 10 or less Porosity: 5 (volume)% or less Moisture: 5.5%
【００２８】[0028]
【発明の効果】本発明における多孔質焼結体は、非常に
融点の高い硅砂（ＳｉＯ2 ）を７５．０〜８５．０重量
％含有し融点の低い鉱物成分と可燃性の有機物を含むそ
の他の成分を含有する約１４０メッシュ以下の微粉原料
を使用しているため、土壌改良材、水質浄化材及び植物
生育用人工土壌として所望の形態に成形でき、また、焼
成により気孔が均一に形成され、通気度が２０〜１００
で、気孔率が２５〜４５％で、破壊強度が５ｋｇ以上
で、保水性に優れ、無菌で安全性も高く、更に気孔中に
土壌、水質の改善に有用な菌をうえ付け保持することが
できる。そのため、吸着作用などにより水を浄化するこ
とができ、また、植物の栽培においてその根ぐされを防
止し、ミネラル分を適度に補給することができるうえ、
耐久性にも優れている。また、本発明により、本来廃棄
されるべき原料を有効利用することができるので、環境
保全に貢献することもできるうえ、経済的なメリットが
大きい。Porous sintered body of the present invention exhibits a very high melting point silica sand (SiO 2) of 75.0 to 85.0 wt% containing and other containing low mineral component and a flammable organic substance having a melting point Because it uses a fine powder raw material of about 140 mesh or less containing the following components, it can be formed into a desired form as a soil improvement material, a water purification material and an artificial soil for plant growth, and pores are uniformly formed by firing. , Air permeability is 20-100
The porosity is 25 to 45%, the breaking strength is 5 kg or more, the water retention is excellent, the sterility is high, the safety is high, and the bacteria useful for soil and water quality improvement can be additionally held in the pores. it can. Therefore, it is possible to purify water by the adsorption action and the like, and to prevent rooting in plant cultivation, and to appropriately replenish minerals.
Also has excellent durability. In addition, according to the present invention, raw materials that should be discarded can be effectively used, so that they can contribute to environmental preservation and have great economic merit.
【図１】本発明における一実施例の多孔質焼結体の粒子
構造の顕微鏡写真である。FIG. 1 is a photomicrograph of a particle structure of a porous sintered body of one example of the present invention.
【図２】本発明における一実施例の多孔質焼結体の粒子
構造の電子顕微鏡写真である。FIG. 2 is an electron micrograph of a particle structure of a porous sintered body of one example of the present invention.
【図３】本発明における一実施例の多孔質焼結体の粒子
構造の顕微鏡写真である。FIG. 3 is a photomicrograph of a particle structure of a porous sintered body of one example of the present invention.
【図４】本発明における一実施例の多孔質焼結体の粒子
構造の電子顕微鏡写真である。FIG. 4 is an electron micrograph of a particle structure of a porous sintered body of one example of the present invention.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ // Ｃ０９Ｋ 101:00 (72)発明者 出津 新也 茨城県土浦市北神立町４番２ 自動車鋳 物株式会社技術センター内 (56)参考文献 特開 平３−215373（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) C04B 38/00 ────────────────────────────────────────────────── ─── Continued on the front page (51) Int.Cl. 7 Identification symbol FI // C09K 101: 00 (72) Inventor Shinya 4-2 Kitakami Tatemachi, Tsuchiura-shi, Ibaraki Automobile Casting Co., Ltd. Technical Center (56) References JP-A-3-215373 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) C04B 38/00
Claims (6)
７５．０〜８５．０重量％、約１４０メッシュ以下の微
粉砂に水を加えて混練し成形した成形物を焼成して得ら
れる通気度２０〜１００、気孔率２５〜４５％、破壊強
度５ｋｇ以上の多孔質焼結体からなること、を特徴とす
る土壌改良材。1. Aeration obtained by baking a molded product obtained by adding water to kneaded fine sand having a SiO 2 content of 75.0 to 85.0% by weight and a mesh of about 140 mesh or less, which is derived from a used foundry sand mold, and calcining the molded product. A soil improving material comprising a porous sintered body having a degree of 20 to 100, a porosity of 25 to 45%, and a breaking strength of 5 kg or more.
７５．０〜８５．０重量％、約１４０メッシュ以下の微
粉砂に水を加えて混練し成形した成形物を乾燥し、次い
で焼成して得られる通気度２０〜１００、気孔率２５〜
４５％、破壊強度５ｋｇ以上の多孔質焼結体からなるこ
と、を特徴とする土壌改良材。2. A fine powder sand having a SiO 2 content of 75.0 to 85.0% by weight derived from a used sand mold and having a mesh size of about 140 mesh or less, which is kneaded with water, dried, and then fired. Air permeability of 20 to 100 and porosity of 25 to
45. A soil improving material comprising a porous sintered body having a breaking strength of 45% and a breaking strength of 5 kg or more.
７５．０〜８５．０重量％、約１４０メッシュ以下の微
粉砂に水を加えて混練し成形した成形物を焼成して得ら
れる通気度２０〜１００、気孔率２５〜４５％、破壊強
度５ｋｇ以上の多孔質焼結体からなること、を特徴とす
る水質浄化材。3. Ventilation obtained by adding water to kneaded fine sand having a SiO 2 content of 75.0 to 85.0% by weight derived from a used foundry sand mold and having a mesh size of about 140 mesh or less, followed by kneading and shaping a molded product. A water purification material comprising a porous sintered body having a degree of 20 to 100, a porosity of 25 to 45%, and a breaking strength of 5 kg or more.
７５．０〜８５．０重量％、約１４０メッシュ以下の微
粉砂に水を加えて混練し成形した成形物を乾燥し、次い
で焼成して得られる通気度２０〜１００、気孔率２５〜
４５％、破壊強度５ｋｇ以上の多孔質焼結体からなるこ
と、を特徴とする水質浄化材。4. A fine-grained sand having a SiO 2 content of 75.0 to 85.0% by weight and a mesh size of about 140 mesh or less, which is derived from a used foundry sand mold, kneaded with water, and the molded product is dried and fired. Air permeability of 20 to 100 and porosity of 25 to
A water purification material comprising a porous sintered body having 45% and a breaking strength of 5 kg or more.
７５．０〜８５．０重量％、約１４０メッシュ以下の微
粉砂に水を加えて混練し成形した成形物を焼成して得ら
れる通気度２０〜１００、気孔率２５〜４５％、破壊強
度５ｋｇ以上の多孔質焼結体からなること、を特徴とす
る植物生育用人工土壌。5. An air vent obtained by baking a molded product obtained by adding water to a fine powder sand having a SiO 2 content of 75.0 to 85.0% by weight derived from a used sand mold and having a mesh size of about 140 mesh or less, followed by kneading and molding. An artificial soil for plant growth, comprising a porous sintered body having a degree of 20 to 100, a porosity of 25 to 45%, and a breaking strength of 5 kg or more.
７５．０〜８５．０重量％、約１４０メッシュ以下の微
粉砂に水を加えて混練し成形した成形物を乾燥し、次い
で焼成して得られる通気度２０〜１００、気孔率２５〜
４５％、破壊強度５ｋｇ以上の多孔質焼結体からなるこ
と、を特徴とする植物生育用人工土壌。6. A fine powder sand having a SiO 2 content of 75.0 to 85.0% by weight derived from a used sand mold and having a mesh size of about 140 mesh or less is kneaded with water, and the molded product is dried and fired. Air permeability of 20 to 100 and porosity of 25 to
45. An artificial soil for growing plants, comprising a porous sintered body having a breaking strength of 5% or more and 45% or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21672494A JP2997168B2 (en) | 1994-08-19 | 1994-08-19 | Soil conditioner, water purification material and artificial soil for plant growth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21672494A JP2997168B2 (en) | 1994-08-19 | 1994-08-19 | Soil conditioner, water purification material and artificial soil for plant growth |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0859365A JPH0859365A (en) | 1996-03-05 |
| JP2997168B2 true JP2997168B2 (en) | 2000-01-11 |
Family
ID=16692934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21672494A Expired - Fee Related JP2997168B2 (en) | 1994-08-19 | 1994-08-19 | Soil conditioner, water purification material and artificial soil for plant growth |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2997168B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000006313A1 (en) * | 1998-07-30 | 2000-02-10 | Brett David Reich | New products and methods using foundry dust |
| JP6218374B2 (en) * | 2012-12-10 | 2017-10-25 | 東洋ゴム工業株式会社 | Artificial soil particles and artificial soil medium |
| JP6419506B2 (en) * | 2014-09-29 | 2018-11-07 | アイシン高丘株式会社 | Soil modifier for hydrous soil and method for regenerating soil |
| JP6385870B2 (en) * | 2015-03-24 | 2018-09-05 | アイシン高丘株式会社 | Arsenic remover |
-
1994
- 1994-08-19 JP JP21672494A patent/JP2997168B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0859365A (en) | 1996-03-05 |
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