JP2010150508A - Granules and method of manufacturing the same - Google Patents
Granules and method of manufacturing the same Download PDFInfo
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本発明は、無機物質の造粒体に関する。 The present invention relates to an inorganic substance granule.
従来、無機物質造粒体の製造方法としては、水を用いて、転動型、混合型等の造粒装置を用いて成長様式として製造する方法、圧縮成形型等の造粒装置を用いて強制様式として製造する方法、噴射型等の造粒装置を用いて液滴発生様式として製造する方法等が知られている（非特許文献１）。 Conventionally, as a manufacturing method of an inorganic substance granulated body, using water, a method of manufacturing as a growth mode using a granulating apparatus such as a rolling type or a mixing type, using a granulating apparatus such as a compression mold A method of manufacturing as a forced mode, a method of manufacturing as a droplet generation mode using a granulating apparatus such as an injection type, and the like are known (Non-Patent Document 1).
また、無機物質と合成樹脂エマルジョンから粉末を得る方法として、例えば、エチレン／酢酸ビニル共重合体などの合成樹脂エマルジョンから粉末を得る方法として、重合体１００質量部に対して５〜２０質量部のポリビニルアルコールを保護コロイドとして添加し、水性系で単量体成分を重合する事により、得られた共重合体の水性分散物を噴霧乾燥し、その際平均粒径が０．０１〜０．５μｍの珪酸アルミニウム、シリカ及び炭酸カルシウム等の乾燥した抗ブロッキング材を水性分散物の固形分１００質量部に対して、３〜３０質量部の割合で噴霧乾燥機に水性分散物と個別に導入しながら同時に噴霧する方法等が知られている（特許文献１）。
しかしながら、これらの方法では、得られた無機物質造粒体は、耐水性及び強度特性において十分ではなかった。
Moreover, as a method of obtaining a powder from an inorganic substance and a synthetic resin emulsion, for example, as a method of obtaining a powder from a synthetic resin emulsion such as an ethylene / vinyl acetate copolymer, 5 to 20 parts by mass with respect to 100 parts by mass of the polymer. By adding polyvinyl alcohol as a protective colloid and polymerizing the monomer component in an aqueous system, the aqueous dispersion of the obtained copolymer is spray-dried, with an average particle size of 0.01 to 0.5 μm While introducing a dry antiblocking material such as aluminum silicate, silica and calcium carbonate individually into the spray dryer at a rate of 3 to 30 parts by mass with respect to 100 parts by mass of the solid content of the aqueous dispersion A method of spraying at the same time is known (Patent Document 1).
However, in these methods, the obtained inorganic substance granule is not sufficient in water resistance and strength characteristics.
本発明は、耐水性及び強度特性に優れた無機物質造粒体を提供するものである。
The present invention provides an inorganic substance granule excellent in water resistance and strength characteristics.
本発明は、上記課題を解決するために、以下の手段を採用する。
（１）比表面積３．０〜１００（ｍ２／ｇ）の無機物質１０００質量部、合成樹脂エマルジョン及び／又は合成ゴムラテックス２〜２０質量部、減水剤１．５〜１０質量部、水１００〜２００質量部を含有してなる造粒体。
（２）５．６ｍｍ以上、５．６ｍｍ未満〜２．８ｍｍ以上、２．８ｍｍ未満〜１．０ｍｍ以上、及び１．０ｍｍ未満の各粒度範囲において、１０質量％以上の造粒体を含有してなる前記（１）に記載の造粒体。
（３）１０５℃で１時間乾燥した造粒体の乾燥前と乾燥後のＪＩＳ Ｂ ７７２１における強度試験の圧縮強度が、０．２ＭＰａ以上である前記（１）又は（２）に記載の造粒体。
（４）無機物質がシリカ又はアルミナである前記（１）〜（３）のいずれか一項に記載の造粒体。
（５）比表面積３．０〜１００（ｍ２／ｇ）の無機物質１０００質量部、合成樹脂エマルジョン及び／又は合成ゴムラテックス２〜２０質量部、減水剤１．５〜１０質量部、水１００〜２００質量部を用いて造粒してなる前記（１）〜（４）のいずれか一項に記載の造粒体の製造方法。
The present invention employs the following means in order to solve the above problems.
(1) 1000 parts by mass of an inorganic substance having a specific surface area of 3.0 to 100 (m 2 / g), 2 to 20 parts by mass of a synthetic resin emulsion and / or synthetic rubber latex, 1.5 to 10 parts by mass of a water reducing agent, 100 of water A granulated body containing ~ 200 parts by mass.
(2) In a particle size range of 5.6 mm or more, less than 5.6 mm to 2.8 mm or more, less than 2.8 mm to 1.0 mm or more, and less than 1.0 mm, 10% by mass or more of granulated material is contained. The granulated material according to (1) above.
(3) The granulation according to (1) or (2) above, wherein the compressed strength of the strength test in JIS B 7721 before and after drying of the granulated product dried at 105 ° C. for 1 hour is 0.2 MPa or more. body.
(4) The granulated material according to any one of (1) to (3), wherein the inorganic substance is silica or alumina.
(5) 1000 parts by mass of an inorganic substance having a specific surface area of 3.0 to 100 (m 2 / g), 2 to 20 parts by mass of a synthetic resin emulsion and / or synthetic rubber latex, 1.5 to 10 parts by mass of a water reducing agent, 100 of water The manufacturing method of the granulated body as described in any one of said (1)-(4) formed by granulating using -200 mass parts.
本発明の造粒体は、耐水性及び強度特性に優れている。 The granulated body of the present invention is excellent in water resistance and strength characteristics.
以下、本発明を詳細に説明する。
本発明の無機物質としては、シリカ、溶融シリカ、アルミナ、溶融アルミナ、セメント、炭酸カルシウム、酸化チタン、ジルコニア、粘土鉱物、活性炭等多岐に渡るが、特に、粒子形態が球状に近い溶融シリカ、溶融アルミナにおいて、耐水性及び強度特性が優れた無機物質造粒体を得ることが可能である。特に、溶融シリカは水とのシラノール結合により水硬性を有するため、耐水性及び強度特性に優れた無機物質造粒体を得ることが可能である。
Hereinafter, the present invention will be described in detail.
Examples of the inorganic substance of the present invention include silica, fused silica, alumina, fused alumina, cement, calcium carbonate, titanium oxide, zirconia, clay mineral, activated carbon, and the like. In alumina, it is possible to obtain an inorganic substance granule having excellent water resistance and strength characteristics. In particular, since fused silica has hydraulic properties due to silanol bonding with water, it is possible to obtain an inorganic substance granule excellent in water resistance and strength characteristics.
本発明の合成樹脂エマルジョン及び合成ゴムラテックスとしては、アクリル系、酢酸ビニル系、塩化ビニリデン系、スチレンブタジエン系、クロロプレン及び塩化ビニル系等のエマルジョン等が挙げられ、これらの二種以上を共重合したものも使用可能である。これらの内、耐水性及び強度特性の面から特に、酢酸ビニル系エマルジョンの使用が特に好ましい。 Examples of the synthetic resin emulsion and synthetic rubber latex of the present invention include acrylic, vinyl acetate, vinylidene chloride, styrene butadiene, chloroprene and vinyl chloride emulsions, and two or more of these are copolymerized. Things can also be used. Among these, the use of a vinyl acetate emulsion is particularly preferable from the viewpoint of water resistance and strength characteristics.
本発明の減水剤とは、無機物質造粒体の造粒時の流動性、造粒性を向上させる効果を持つものであり、一般の減水剤や高性能減水剤を示す。一般の減水剤としては、オキシカルボン酸塩、リグニンスルホン酸塩、及び高級多価アルコール等が挙げられ、高性能減水剤としては、アルキルアリルスルホン酸塩、芳香族多環縮合物スルホン酸塩、ナフタレンスルホン酸ホルマリン縮合物の塩。メラミンスルホン酸ホルムアルデヒド縮合物の塩、高分子量リグニンスルホン酸塩、及びポリカルボン酸塩等が挙げられる。これらの内、ポリエチレングリコール系高分子化合物を用いた場合に、特に無機物質造粒体が良好な粒度分布を示す。良好な粒度分布とは、５．６ｍｍ以上、５．６ｍｍ未満〜２．８ｍｍ以上、２．８ｍｍ未満〜１．０ｍｍ以上、及び１．０ｍｍ未満の各粒度範囲において、無機物質造粒体が１０質量％以上存在することである。なお、各粒度範囲における無機物質造粒体の質量は、前述した各粒度範囲の篩い試験の結果により求めたものである。 The water reducing agent of the present invention has an effect of improving the fluidity and granulation property during granulation of an inorganic substance granulated body, and indicates a general water reducing agent or a high performance water reducing agent. General water reducing agents include oxycarboxylates, lignin sulfonates, higher polyhydric alcohols, etc., and high performance water reducing agents include alkyl allyl sulfonates, aromatic polycyclic condensate sulfonates, Salt of naphthalene sulfonic acid formalin condensate. Examples include melamine sulfonic acid formaldehyde condensate salts, high molecular weight lignin sulfonates, and polycarboxylates. Among these, when a polyethylene glycol-based polymer compound is used, the inorganic substance granule exhibits a particularly good particle size distribution. Good particle size distribution means that in each particle size range of 5.6 mm or more, less than 5.6 mm to 2.8 mm or more, less than 2.8 mm to 1.0 mm or more, and less than 1.0 mm, the inorganic substance granule is 10 It is present in a mass% or more. In addition, the mass of the inorganic substance granule in each particle size range is obtained from the result of the sieving test in each particle size range described above.
無機物質は比表面積が３．０〜１００（ｍ２／ｇ）の無機物質である。比表面積が３．０（ｍ２／ｇ）未満の粗粉の無機物質では、耐水性及び強度特性において優れた無機物質造粒体を製造することが難しい。比表面積が１００（ｍ２／ｇ）を超える微粉の無機物質では、耐水性及び強度特性において優れた無機物質造粒体を製造することが難しい。 The inorganic substance is an inorganic substance having a specific surface area of 3.0 to 100 (m 2 / g). With a coarse inorganic substance having a specific surface area of less than 3.0 (m 2 / g), it is difficult to produce an inorganic substance granule excellent in water resistance and strength characteristics. With a finely divided inorganic substance having a specific surface area exceeding 100 (m 2 / g), it is difficult to produce an inorganic substance granule excellent in water resistance and strength characteristics.
造粒体の配合は、比表面積３．０〜１００（ｍ２／ｇ）の無機物質１０００質量部に対して、合成樹脂エマルジョン及び／又は合成ゴムラテックス２〜２０質量部、減水剤１．５〜１０質量部、水１００〜２００質量部である。 The granule is blended in an amount of 2 to 20 parts by weight of a synthetic resin emulsion and / or synthetic rubber latex and 1000 parts by weight of a water reducing agent for 1000 parts by weight of an inorganic substance having a specific surface area of 3.0 to 100 (m 2 / g). 10 parts by mass and 100-200 parts by mass of water.
合成樹脂エマルジョン及び／又は合成ゴムラテックスが２質量部未満では、粒径が揃わず、耐水性、耐候性及び強度特性において優れた無機物質造粒体を製造することが出来ず、２０質量部を超えると耐水性、及び強度特性に優れた無機物質造粒体を製造する事が出来ない。 If the synthetic resin emulsion and / or the synthetic rubber latex is less than 2 parts by mass, the particle size is not uniform, and it is not possible to produce an inorganic substance granule excellent in water resistance, weather resistance and strength properties. If it exceeds the above range, it is impossible to produce an inorganic substance granule excellent in water resistance and strength characteristics.
減水剤は１．５質量部以上で、前述した良好な粒度分布を示す造粒体を形成する。無機物質造粒体の造粒時の混練時間は通常１分間であるが、減水剤が２．０質量部未満では、前述した良好な粒度分布を示すための混練時間が５分間以上と著しく長くなる。減水剤が１０質量部を超えると耐水性、及び強度特性に優れた無機物質造粒体を製造する事が出来ない。好ましい減水剤の使用量は、２．０〜１０質量部である。 A water reducing agent is 1.5 mass parts or more, and forms the granule which shows the favorable particle size distribution mentioned above. The kneading time at the time of granulation of the inorganic substance granulated body is usually 1 minute, but if the water reducing agent is less than 2.0 parts by mass, the kneading time for showing the above-mentioned good particle size distribution is remarkably long as 5 minutes or more. Become. If the water reducing agent exceeds 10 parts by mass, an inorganic substance granule excellent in water resistance and strength characteristics cannot be produced. A preferable amount of the water reducing agent used is 2.0 to 10 parts by mass.
水が１００質量部未満では、造粒体が良好な粒度分布、及び良好な強度特性を示さない。水が２００質量部を超えると、造粒体が良好な粒度分布、及び良好な強度特性を示さない。この場合の造粒体の粒度分布は、５．６ｍｍ以上、５．６ｍｍ未満〜２．８ｍｍ以上、２．８ｍｍ未満〜１．０ｍｍ以上、１．０ｍｍ未満のいずれかの粒度範囲において、無機物質造粒体の質量が３％未満であり、造粒体は均一に分布していない。
この無機物質造粒体を４ｍｍの開口径の篩いで篩った後、篩上の無機物質造粒体を更に、５ｍｍ、８ｍｍ、１０ｍｍの各開口径の篩いで篩った。篩い後の造粒体を１０５℃で１時間の乾燥した、乾燥前と乾燥後のＪＩＳ Ｂ ７７２１における強度試験の圧縮強度は、０．２ＭＰａ未満であった。
When water is less than 100 parts by mass, the granulated product does not exhibit a good particle size distribution and good strength characteristics. When water exceeds 200 mass parts, a granule does not show a favorable particle size distribution and a favorable intensity | strength characteristic. In this case, the granule has a particle size distribution of 5.6 mm or more, less than 5.6 mm to 2.8 mm or more, less than 2.8 mm to 1.0 mm or more, and less than 1.0 mm in an inorganic substance. The mass of the granulated body is less than 3%, and the granulated body is not uniformly distributed.
After this inorganic substance granule was sieved with a sieve having an opening diameter of 4 mm, the inorganic substance granule on the sieve was further sieved with sieves having respective opening diameters of 5 mm, 8 mm and 10 mm. The granulated body after sieving was dried at 105 ° C. for 1 hour. The compressive strength of the strength test in JIS B 7721 before and after drying was less than 0.2 MPa.
造粒体の製造方法としては、水を用いて、転動型、混合型等の造粒装置を用いて成長様式として製造する方法、圧縮成形型等の造粒装置を用いて強制様式として製造する方法、噴射型等の造粒装置を用いて液滴発生様式として製造する方法等が知られているが、本発明では、造粒体の比表面積を大きく確保する方式として、二軸等の混合型、噴射型等のスプレイドライヤー方式等が好ましい。 As a method for producing a granulated body, a method for producing as a growth mode using a rolling type, a mixing type or the like using water, and a method for producing a forced type using a granulating device such as a compression mold. However, in the present invention, as a method for ensuring a large specific surface area of the granulated body, biaxial or the like is known. A spray dryer system such as a mixed type or a jet type is preferred.
以下、実施例により本発明を更に詳しく説明する。
実施例１
無機質造粒体は、ハンドミサーによる混合型造粒機により、造粒を行った。表１の配合の各材料を用いて、減水剤を予め混入した合成樹脂エマルジョン、無機物質（球状溶融シリカ）、及び水をハンドミキサにより、１分間混練した。
なお、実施例８は５分間混練した。
使用材料
（１）合成樹脂エマルジョン
「デンカＥＶＡラテックス７０」エチレン／酢酸ビニル共重合体（固形分５６重量％）
電気化学工業社製
（２）減水剤
「ＦＴＮ−３０」 ポリエチレングリコール系水溶性高分子 グレースケミカルズ社製
（３）無機物質
（Ａ）球状溶融シリカ粉末、比表面積１．０（ｍ２／ｇ）、平均粒子径 １５（μｍ）
（Ｂ）球状溶融シリカ粉末、比表面積２．０（ｍ２／ｇ）、平均粒子径 ７．５（μｍ）
（Ｃ）球状溶融シリカ粉末、比表面積３．０（ｍ２／ｇ）、平均粒子径 ５（μｍ）
（Ｄ）球状溶融シリカ粉末、比表面積４．０（ｍ２／ｇ）、平均粒子径 ３．８（μｍ）
（Ｅ）球状溶融シリカ粉末、比表面積８．５（ｍ２／ｇ）、平均粒子径 １．８（μｍ）
（Ｆ）球状溶融シリカ粉末、比表面積 ２５（ｍ２／ｇ）、平均粒子径 ０．６（μｍ）
（Ｇ）球状溶融シリカ粉末、比表面積１００（ｍ２／ｇ）、平均粒子径 ０．１５（μｍ）
（Ｈ）球状溶融シリカ粉末、比表面積１５０（ｍ２／ｇ）、平均粒子径 ０．１０（μｍ）
Hereinafter, the present invention will be described in more detail with reference to examples.
Example 1
The inorganic granulated material was granulated with a mixing granulator using a hand masser. Using each material of the composition shown in Table 1, a synthetic resin emulsion premixed with a water reducing agent, an inorganic substance (spherical fused silica), and water were kneaded with a hand mixer for 1 minute.
Note that Example 8 was kneaded for 5 minutes.
Materials used (1) Synthetic resin emulsion
"Denka EVA Latex 70" ethylene / vinyl acetate copolymer (solid content 56 wt%)
Made by Denki Kagaku Kogyo
(2) Water reducing agent “FTN-30” Polyethylene glycol water-soluble polymer Grace Chemicals
(3) Inorganic substance (A) Spherical fused silica powder, specific surface area 1.0 (m 2 / g), average particle size 15 (μm)
(B) Spherical fused silica powder, specific surface area 2.0 (m 2 / g), average particle size 7.5 (μm)
(C) Spherical fused silica powder, specific surface area 3.0 (m 2 / g), average particle size 5 (μm)
(D) Spherical fused silica powder, specific surface area 4.0 (m 2 / g), average particle size 3.8 (μm)
(E) Spherical fused silica powder, specific surface area 8.5 (m 2 / g), average particle size 1.8 (μm)
(F) Spherical fused silica powder, specific surface area 25 (m 2 / g), average particle size 0.6 (μm)
(G) Spherical fused silica powder, specific surface area 100 (m 2 / g), average particle size 0.15 (μm)
(H) Spherical fused silica powder, specific surface area 150 (m 2 / g), average particle size 0.10 (μm)
下記に各種物性の評価方法を示す。その評価結果を表１に示す。
（１）比表面積
本発明の球状溶融シリカ質粉末の比表面積は、ＢＥＴ法による比表面積測定に基づいて測定する。比表面積測定機として、マウンテック社製商品名「マックソーブ モデルＨＭ−１２０８」を用いて測定した。
（２）平均粒子径
ＪＩＳ Ｒ １６３０「ファインセラミックス原料のレーザ回折・散乱法による粒子径分布測定方法」による。
本発明の球状溶融シリカ質粉末の平均粒子径は、レーザー回折散乱法による粒度測定に基づいて測定する。測定機にはシーラス社製商品名「シーラスグラニュロメーター モデル９２０」を用い、水に球状溶融シリカ質粉末を分散させ、さらに超音波ホモジナイザーで２００Ｗの出力で１分間分散処理してから測定した。なお、粒度分布測定は、粒子径チャンネルが０．３、１、１．５、２、３、４、６、８、１２、１６、２４、３２、４８、６４、９６、１２８、１９６μｍにて行った。測定した粒度分布において、累積質量が５０％となる粒子径が平均粒子径である。
（３）粒度分布
篩い試験により、５．６ｍｍ以上、５．６ｍｍ未満〜２．８ｍｍ以上、２．８ｍｍ未満〜１ｍｍ以上、及び１ｍｍ未満の各粒度範囲の無機物質造粒体を、手動で篩い、篩残分を質量％で求めた。
（４）造粒体の造粒状態
造粒体を篩い試験によって得られた粒度分布により、造粒状態を判断した。５．６ｍｍ以上、５．６ｍｍ未満〜２．８ｍｍ以上、２．８ｍｍ未満〜１ｍｍ以上、及び１ｍｍ未満の各粒度範囲において、無機物質造粒体が１０質量％以上の場合には、均一に分布していると判断し、造粒状態を◎と判断する。５．６ｍｍ以上、５．６ｍｍ未満〜２．８ｍｍ以上、２．８ｍｍ未満〜１ｍｍ以上、１ｍｍ未満のいずれかの粒度範囲において、無機物質造粒体の質量が３％未満の場合には、不均一に分布していると判断し、造粒状態を×と判断する。５．６ｍｍ以上、５．６ｍｍ未満〜２．８ｍｍ以上、２．８ｍｍ未満〜１ｍｍ以上、及び１ｍｍ未満の各粒度範囲において、無機物質造粒体が３質量％以上１０質量％未満の場合には、均一分布が不十分であり、造粒状態を△と判断した。
（５）造粒体の圧縮強度
造粒体の強度試験方法は、造粒体を４ｍｍの開口径の金網にて篩い後、篩上の造粒体を更に、表に示した開口径の篩を通し、その篩上部分の造粒体を使用した。篩い後の造粒体を１０５℃で１時間の乾燥し、乾燥前と乾燥後の造粒体の圧縮強度をＪＩＳ Ｂ ７７２１による電子式プッシュプルゲージ法を用いて測定した。
測定装置には、「デジタルプッシュプルゲージ品番Ｍ８４５ＴＧ−１Ｄ」（株式会社シロ産業）を使用した。
（６）造粒体の浸水試験
得られた造粒体は、造粒体１ｋｇに対して水５ｋｇが入ったポリ袋に入れて、水に浸漬させ、２０±２℃の恒温養生室内で１週間静置し、水中養生を行った。１週間後、造粒体を含んだ６ｋｇのポリ袋を１回／秒、振幅２０ｃｍ、で１分間（６０回）振動させた。水が白濁しない場合、造粒体が破壊されていないと判断して○、水が白濁した場合、造粒体が破壊されたと判断して×、○とも×とも判定出来ない僅かに白濁した中間を△とした。白濁の判定方法は、ＪＩＳ Ｚ ８１０２の物体色の色によった。
The evaluation methods for various physical properties are shown below. The evaluation results are shown in Table 1.
(1) Specific surface area The specific surface area of the spherical fused siliceous powder of the present invention is measured based on the specific surface area measurement by the BET method. As a specific surface area measuring machine, the measurement was performed using a trade name “Maxsorb Model HM-1208” manufactured by Mountec.
(2) Average particle size According to JIS R 1630 “Method for measuring particle size distribution of fine ceramic raw material by laser diffraction / scattering method”.
The average particle size of the spherical fused siliceous powder of the present invention is measured based on particle size measurement by a laser diffraction scattering method. The product name “Cirrus Granurometer Model 920” manufactured by Cirrus Co., Ltd. was used as a measuring machine, and spherical fused siliceous powder was dispersed in water and further subjected to dispersion treatment with an ultrasonic homogenizer at an output of 200 W for 1 minute. The particle size distribution was measured when the particle diameter channel was 0.3, 1, 1.5, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 128, 196 μm. went. In the measured particle size distribution, the particle diameter at which the cumulative mass is 50% is the average particle diameter.
(3) Manually sieving inorganic substance granules in particle size ranges of 5.6 mm or more, less than 5.6 mm to 2.8 mm or more, less than 2.8 mm to 1 mm or more, and less than 1 mm by a particle size distribution sieving test. The sieve residue was determined by mass%.
(4) Granulated state of granulated body The granulated state was judged from the particle size distribution obtained by sieving the granulated body. In each particle size range of 5.6 mm or more, less than 5.6 mm to 2.8 mm or more, less than 2.8 mm to 1 mm or more, and less than 1 mm, when the inorganic substance granule is 10% by mass or more, it is uniformly distributed. The granulation state is judged as ◎. In any particle size range of 5.6 mm or more, less than 5.6 mm to 2.8 mm or more, less than 2.8 mm to 1 mm or more, and less than 1 mm, if the mass of the inorganic substance granule is less than 3%, It is judged that the particles are uniformly distributed, and the granulation state is judged as x. 5.6 mm or more, less than 5.6 mm to 2.8 mm or more, less than 2.8 mm to 1 mm or more, and in each particle size range of less than 1 mm, when the inorganic substance granule is 3 mass% or more and less than 10 mass% The uniform distribution was insufficient, and the granulation state was judged as Δ.
(5) Compressive strength of granules
The strength test method for the granulated product is that the granulated product is sieved with a wire mesh having an opening diameter of 4 mm, and then the granulated product on the sieve is further passed through a sieve having the aperture diameter shown in the table, and the granulated product on the top of the sieve is formed. Granules were used. The granulated body after sieving was dried at 105 ° C. for 1 hour, and the compressive strength of the granulated body before and after drying was measured using an electronic push-pull gauge method according to JIS B 7721.
“Digital push-pull gauge part number M845TG-1D” (Shiro Sangyo Co., Ltd.) was used as the measuring device.
(6) Granulation immersion test The obtained granulation was placed in a plastic bag containing 5 kg of water per 1 kg of granulation, immersed in water, and 1 in a thermostatic curing chamber at 20 ± 2 ° C. I left still for a week and performed underwater curing. One week later, a 6 kg plastic bag containing the granulated body was vibrated for 1 minute (60 times) at a rate of 20 cm and once per second. If the water does not become cloudy, it is judged that the granule is not broken. ○, If the water becomes cloudy, it is judged that the granulated body is broken. Was represented by Δ. The method for determining cloudiness was based on the color of the object color of JIS Z8102.
表１の実施例と比較例が示すように本願発明の無機物質造粒体は、浸水試験によっても材料崩壊せず、良好な耐水性を示し、１０５℃で１時間の乾燥した、乾燥前と乾燥後のＪＩＳ Ｂ ７７２１における圧縮強度も良好であった。
なお、比較例７は、造粒体が団子状態となり、適切な造粒ができなかった。
As shown in the examples and comparative examples in Table 1, the inorganic substance granule of the present invention did not collapse even in the water immersion test, showed good water resistance, dried at 105 ° C. for 1 hour, and before drying. The compressive strength in JIS B 7721 after drying was also good.
In Comparative Example 7, the granulated body was in a dumpling state, and appropriate granulation could not be performed.
本発明の無機物質造粒体は、ベルトコンベア、ロータリーバルブ、バケットエレベーター、パンコンベア、チェーンコンベア等の輸送機器への付着をおこさず、材料崩壊せずに、輸送可能である。また、本発明の無機物質造粒体は、強度特性に優れる為、テーブルフィーダー等で空気輸送する事も可能である。 The inorganic substance granulated material of the present invention does not adhere to transportation devices such as belt conveyors, rotary valves, bucket elevators, bread conveyors, chain conveyors, and can be transported without material collapse. Moreover, since the inorganic substance granule of this invention is excellent in an intensity | strength characteristic, it can also be pneumatically transported with a table feeder etc.
本発明の耐水性及び強度特性に優れた無機物質造粒体は、セメント原料、肥料原料、電子材料原料等多岐に渡って用いることができる。
The inorganic substance granule excellent in water resistance and strength characteristics of the present invention can be used in a wide variety of fields such as a cement raw material, a fertilizer raw material, and an electronic material raw material.
Claims (5)
1000 parts by mass of an inorganic substance having a specific surface area of 3.0 to 100 (m 2 / g), 2 to 20 parts by mass of a synthetic resin emulsion and / or synthetic rubber latex, 1.5 to 10 parts by mass of a water reducing agent, and 100 to 200 parts by mass of water The manufacturing method of the granulated body as described in any one of Claims 1-4 formed by granulating using a part.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2010254490A (en) * | 2009-04-22 | 2010-11-11 | Denki Kagaku Kogyo Kk | Granule and method for producing the same |
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| JPH04139046A (en) * | 1990-09-27 | 1992-05-13 | Denki Kagaku Kogyo Kk | Powdery dispersant and its production |
| JPH04140111A (en) * | 1990-10-01 | 1992-05-14 | Denki Kagaku Kogyo Kk | Manufacture of polymer cement hardened body |
| JPH0656493A (en) * | 1992-08-06 | 1994-03-01 | Denki Kagaku Kogyo Kk | Powdery polymer composition containing hydraulic substance and its production |
| JPH06100344A (en) * | 1992-09-18 | 1994-04-12 | Denki Kagaku Kogyo Kk | Production of powdery polymer composition |
| JPH06211515A (en) * | 1993-01-18 | 1994-08-02 | Kawatetsu Mining Co Ltd | Highly dispersible granulated material of powdery silica and its production |
| JP2002003249A (en) * | 2000-06-16 | 2002-01-09 | Denki Kagaku Kogyo Kk | Cement admixture, cement composition and cement concrete with high flowability |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04139046A (en) * | 1990-09-27 | 1992-05-13 | Denki Kagaku Kogyo Kk | Powdery dispersant and its production |
| JPH04140111A (en) * | 1990-10-01 | 1992-05-14 | Denki Kagaku Kogyo Kk | Manufacture of polymer cement hardened body |
| JPH0656493A (en) * | 1992-08-06 | 1994-03-01 | Denki Kagaku Kogyo Kk | Powdery polymer composition containing hydraulic substance and its production |
| JPH06100344A (en) * | 1992-09-18 | 1994-04-12 | Denki Kagaku Kogyo Kk | Production of powdery polymer composition |
| JPH06211515A (en) * | 1993-01-18 | 1994-08-02 | Kawatetsu Mining Co Ltd | Highly dispersible granulated material of powdery silica and its production |
| JP2002003249A (en) * | 2000-06-16 | 2002-01-09 | Denki Kagaku Kogyo Kk | Cement admixture, cement composition and cement concrete with high flowability |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2010254490A (en) * | 2009-04-22 | 2010-11-11 | Denki Kagaku Kogyo Kk | Granule and method for producing the same |
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