JPH05238788A - Production of high-strength cement - Google Patents
Production of high-strength cementInfo
- Publication number
- JPH05238788A JPH05238788A JP4039402A JP3940292A JPH05238788A JP H05238788 A JPH05238788 A JP H05238788A JP 4039402 A JP4039402 A JP 4039402A JP 3940292 A JP3940292 A JP 3940292A JP H05238788 A JPH05238788 A JP H05238788A
- Authority
- JP
- Japan
- Prior art keywords
- cement
- ultrafine particles
- powder
- mixing
- blast furnace
- 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.)
- Granted
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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/0076—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials characterised by the grain distribution
- C04B20/008—Micro- or nanosized fillers, e.g. micronised fillers with particle size smaller than that of the hydraulic binder
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Dispersion Chemistry (AREA)
- Nanotechnology (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は高強度セメントの製造方
法に係り、特に、粒径１μｍ以下の超微粒子からなる粉
体をセメントクリンカ及び／又は高炉水砕スラグに混合
粉砕することにより、高流動性及び高強度発現性を示す
ペースト、モルタル及びコンクリートに適した高強度セ
メントを製造する方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing high-strength cement, and in particular, by mixing and pulverizing powder consisting of ultrafine particles having a particle size of 1 μm or less with cement clinker and / or granulated blast furnace slag, The present invention relates to a method for producing a high-strength cement suitable for pastes, mortars, and concretes having fluidity and high strength development.
【０００２】[0002]
【従来の技術】セメントペースト、セメントモルタル及
びコンクリートに、シリカフュームなどの超微粒子から
なる粉体を混入することにより、それらのフレッシュ時
及び硬化時の物理的性状が著しく改善されることは周知
のことである。2. Description of the Related Art It is well known that by mixing cement paste, cement mortar and concrete with a powder consisting of ultrafine particles such as silica fume, the physical properties of them when fresh and when cured are significantly improved. Is.
【０００３】なお、ここで言う超微粒子とは粒径１μｍ
以下の粒子であって、シリカフュームの他、石炭灰を高
温で蒸発ないし気化させて捕集したもの、即ち、フライ
アッシュ起源超微粒子が好ましいものとして挙げられ、
その他、炭酸カルシウム、高炉水砕スラグ、カオリン等
の粘土鉱物及びその仮焼物、アルミナ・ムライトなどの
酸化物セラミックス、金属等の超微粒子も使用可能であ
る。The ultrafine particles referred to herein have a particle size of 1 μm.
The following particles, in addition to silica fume, those obtained by evaporating or vaporizing coal ash at a high temperature, that is, fly ash origin ultrafine particles are mentioned as preferable ones,
In addition, calcium carbonate, granulated blast furnace slag, clay minerals such as kaolin and their calcined products, oxide ceramics such as alumina and mullite, and ultrafine particles of metals can be used.
【０００４】しかして、従来、これらの超微粒子からな
る粉体をコンクリート材料等として利用する場合、多く
は、コンクリート用練り混ぜミキサー、Ｖ型混合機、回
転揺動方式混合機などの混合機中でセメント等と混合さ
れる。However, conventionally, when the powder made of these ultrafine particles is used as a concrete material or the like, in many cases, it is used in a mixing machine such as a mixing mixer for concrete, a V-type mixing machine or a rotary rocking type mixing machine. Is mixed with cement etc.
【０００５】[0005]
【発明が解決しようとする課題】上述の如く、従来、超
微粒子からなる粉体をコンクリート材料として利用する
場合には、各種混合機中で他の材料と同時に混合する場
合が多いが、本発明者らは超微粒子からなる粉体の凝集
性、分散性等について検討した結果、超微粒子からなる
粉体の凝集状態は、コンクリート用練り混ぜミキサー、
Ｖ型混合機、回転揺動方式混合機などの混合機でセメン
ト等と混合しても、混合前と大きく変わらないこと、こ
のため、十分な分散性が得られないことを発見した。し
かして、更に検討を重ねた結果、超微粒子からなる粉体
の凝集状態をほぐし、個々の粒子の分散性を向上させる
には、セメントクリンカ等と共に粉砕すると良いことを
見出した。As described above, conventionally, when powder consisting of ultrafine particles is used as a concrete material, it is often mixed with other materials in various mixers at the same time. As a result of investigating the cohesiveness and dispersibility of the powder made of ultrafine particles, the inventors found that the agglomeration state of the powder made of ultrafine particles was found to be a mixing mixer for concrete,
It has been discovered that even when mixed with cement or the like in a mixer such as a V-type mixer or a rotary rocking type mixer, it is not much different from that before mixing, and thus sufficient dispersibility cannot be obtained. As a result of further studies, it was found that it is preferable to grind with a cement clinker or the like in order to loosen the agglomerated state of the powder composed of ultrafine particles and improve the dispersibility of individual particles.
【０００６】しかしながら、セメント工場における仕上
ミルでのセメント又は高炉水砕スラグと、非顆粒状の超
微粒子からなる粉体とを同時粉砕する場合、仕上ミル給
鉱口から超微粒子の粉体を給鉱すると、超微粒子の多く
はミル内通風と共に飛散して、セメントクリンカ粉又は
高炉水砕スラグ粉に対して均一に分散しないまま集塵機
に捕集されやすい。このように超微粒子がセメントクリ
ンカ粉又は高炉水砕スラグ粉と均一な分散状態で混合さ
れないことから、超微粒子による十分な物性改善効果が
得られないという問題点があった。However, when simultaneously crushing cement or granulated blast furnace slag in a finishing mill in a cement factory and powder consisting of non-granular ultrafine particles, the ultrafine particle powder is fed from the finishing mill feed port. When mined, most of the ultrafine particles are scattered along with the ventilation in the mill and are easily collected by the dust collector without being uniformly dispersed in the cement clinker powder or the granulated blast furnace slag powder. As described above, since the ultrafine particles are not mixed with the cement clinker powder or the granulated blast furnace slag powder in a uniform dispersion state, there is a problem that the ultrafine particles cannot obtain a sufficient effect of improving physical properties.
【０００７】本発明は上記従来の問題点を解決し、超微
粒子による物性改善効果を十分に確保することができる
高強度セメントの製造方法を提供することを目的とす
る。An object of the present invention is to solve the above-mentioned conventional problems and to provide a method for producing a high-strength cement in which the effect of improving the physical properties of ultrafine particles can be sufficiently ensured.
【０００８】[0008]
【課題を解決するための手段】本発明の高強度セメント
の製造方法は、粒径１μｍ以下の超微粒子からなる粉体
をセメントクリンカ及び／又は高炉水砕スラグと混合粉
砕する工程を有するセメントの製造方法であって、粒径
１μｍ以下の超微粒子を造粒した後混合粉砕することを
特徴とするものである。The method for producing a high-strength cement of the present invention comprises a cement having a step of mixing and pulverizing a powder of ultrafine particles having a particle size of 1 μm or less with a cement clinker and / or granulated blast furnace slag. The manufacturing method is characterized in that ultrafine particles having a particle size of 1 μm or less are granulated and then mixed and ground.
【０００９】以下に本発明につき詳細に説明する。The present invention will be described in detail below.
【００１０】本発明においては、セメントクリンカ及び
／又は高炉水砕スラグと粒径１μｍ以下の非顆粒状の超
微粒子からなる粉体とを閉回路式チューブミル、開回路
式チューブミル、竪型ローラーミル等の混合粉砕機で、
必要に応じて石灰石、石膏等と共に混合粉砕するにあた
り、該超微粒子からなる粉体を、造粒して給鉱する。In the present invention, cement clinker and / or granulated blast furnace slag and powder consisting of non-granular ultrafine particles having a particle size of 1 μm or less are closed circuit tube mill, open circuit tube mill, vertical roller. With a mixing crusher such as a mill,
When mixing and crushing with limestone, gypsum, etc. as required, the powder consisting of the ultrafine particles is granulated and fed.
【００１１】造粒方法は以下の２つに大別される。１つ
は、転動、流動層、撹拌混合などの自足造粒機構によ
り、超微粒子が凝集造粒状態となるまで装置内に滞留さ
せる方法である。もう１つは、押出し、圧縮、噴霧など
による強制造粒機構で、ロール、ブレード、スプレイな
どを用いる方法である。その際に、超微粒子の凝集を促
進するために、水、ジエチレングリコール、ステアリン
酸、デキストリン、メチルセルロースなどの液体、滑沢
剤、可塑剤などを添加しても良い。The granulation methods are roughly classified into the following two. One is a method in which the ultrafine particles are retained in the apparatus by a self-sufficient granulation mechanism such as rolling, fluidized bed, and stirring and mixing until the ultrafine particles reach an agglomerated granulation state. The other is a forced granulation mechanism by extrusion, compression, spraying, etc., which uses a roll, blade, spray, or the like. At that time, in order to accelerate the aggregation of the ultrafine particles, a liquid such as water, diethylene glycol, stearic acid, dextrin or methylcellulose, a lubricant, a plasticizer and the like may be added.
【００１２】なお、超微粒子粉体をプレスして凝集造粒
する場合、プレス圧は３ｋｇ／ｃｍ2 以上、とりわけ５
ｋｇ／ｃｍ2 以上とするのが好ましい。When the ultrafine powder is pressed for agglomeration and granulation, the pressing pressure is 3 kg / cm 2 or more, especially 5
It is preferably set to kg / cm 2 or more.
【００１３】なお、本発明において、超微粒子としては
シリカフューム、フライアッシュ起源超微粉末、高炉水
砕スラグ超微粉末、カオリン等の粘土鉱物及びその仮焼
物、超微粉末金属、石英超微粉末、炭酸カルシウム超微
粉末等が挙げられ、これらのうち１種を単独で、或いは
２種以上を併用して用いることができる。In the present invention, as the ultrafine particles, silica fume, fly ash origin ultrafine powder, blast furnace granulated slag ultrafine powder, clay mineral such as kaolin and its calcined product, ultrafine powder metal, quartz ultrafine powder, Examples thereof include ultrafine calcium carbonate powder, and of these, one kind can be used alone, or two or more kinds can be used in combination.
【００１４】このような超微粒子からなる粉体は、通常
の場合、セメントクリンカ及び／又は高炉水砕スラグ１
００重量部に対して５０重量部以下配合される。即ち、
セメントクリンカ及び／又は高炉水砕スラグ１００重量
部に対する、粒径１μｍ以下の超微粒子からなる粉体の
添加量が多過ぎると超微粒子の分散性が不十分であり、
逆に、少な過ぎると超微粒子添加による十分な改善効果
が得られない。従って、超微粒子からなる粉体の添加量
は、セメントクリンカ及び／又は高炉水砕スラグ１００
重量部に対して５〜１５重量部とするのが好ましい。A powder composed of such ultrafine particles is usually a cement clinker and / or granulated blast furnace slag 1
50 parts by weight or less are blended with respect to 00 parts by weight. That is,
If the amount of powder of ultrafine particles having a particle size of 1 μm or less is added to 100 parts by weight of cement clinker and / or granulated blast furnace slag, dispersibility of the ultrafine particles is insufficient,
On the contrary, if the amount is too small, the sufficient improvement effect due to the addition of ultrafine particles cannot be obtained. Therefore, the amount of the fine particles made of ultrafine particles should be 100% for the cement clinker and / or the granulated blast furnace slag 100.
It is preferably 5 to 15 parts by weight with respect to parts by weight.
【００１５】本発明のセメントの製造方法により、セメ
ントクリンカ及び／又は高炉水砕スラグと超微粒子から
なる粉体を混合粉砕してセメントを製造する場合、例え
ば、セメントクリンカに、石膏、超微粒子からなる粉体
の造粒物或いは必要に応じて更に粉砕助剤を添加して混
合粉砕したものに、更に石膏等を添加して混合粉砕して
も良い。When a cement is produced by mixing and pulverizing a powder consisting of cement clinker and / or granulated blast furnace slag and ultrafine particles by the method for producing cement of the present invention, for example, cement clinker is converted from gypsum and ultrafine particles. It is also possible to add a plaster or the like to the granulated product of the powder or a product obtained by further adding a grinding aid if necessary and further mixing and grinding.
【００１６】また、セメントクリンカ及び／又は高炉水
砕スラグの一部に超微粒子からなる粉体の造粒物等を添
加して混合粉砕したものに、残部のセメントクリンカ又
は高炉水砕スラグを別途粉砕して得られた微粉末、各種
セメント、フライアッシュ等を１種以上添加しても良
い。The cement clinker and / or granulated blast furnace slag is mixed with a granulated product of ultrafine particles and mixed with a part of the granulated blast furnace slag, and the remaining cement clinker or granulated blast furnace slag is separately added. One or more kinds of fine powder obtained by crushing, various cements, fly ash and the like may be added.
【００１７】なお、本発明の方法は、セメントクリンカ
及び／又は高炉水砕スラグに、超微粒子からなる粉体を
造粒して凝集させたものを添加して混合粉砕すること以
外は、常法に従って行なうことができ、石膏、粉砕助剤
等の添加量などは通常の範囲とすれば良い。The method of the present invention is the same as the conventional method except that the cement clinker and / or the granulated blast furnace slag is mixed with a mixture of granulated and agglomerated ultrafine particles. The amount of gypsum, grinding aid, etc. to be added may be in the usual range.
【００１８】[0018]
【作用】超微粒子からなる粉体とセメントクリンカ及び
／又は高炉水砕スラグとを混合粉砕することにより、超
微粒子からなる粉体に強い衝撃力を加えて、超微粒子か
らなる粉体の凝集状態をほぐし、超微粒子の分散を促進
し、セメントクリンカ及び／又は高炉水砕スラグの比較
的大きな粒子の表面にほぼ単一粒子となった超微粒子を
付着させることが可能とされる。これにより、セメント
クリンカ及び／又は高炉水砕スラグの大きな粒子の剪断
変形抵抗を減少させて流動性を向上させるとともに、有
効表面積の増加及び大粒子同志の接触面積の減少によ
り、大粒子及び超微粒子の水和反応が促進されることに
なる。また、全粉体の充填性が向上するため、流動性及
び強度発現性が改善される。[Function] By mixing and pulverizing powder consisting of ultrafine particles and cement clinker and / or granulated blast furnace slag, a strong impact force is applied to the powder consisting of ultrafine particles, and the agglomeration state of the powder consisting of ultrafine particles It is possible to loosen the particles, promote dispersion of the ultrafine particles, and attach the ultrafine particles that have become almost single particles to the surface of the relatively large particles of the cement clinker and / or the granulated blast furnace slag. As a result, the shear deformation resistance of large particles of cement clinker and / or granulated blast furnace slag is reduced to improve the fluidity, and the effective surface area is increased and the contact area between large particles is reduced, resulting in large particles and ultrafine particles. Will accelerate the hydration reaction of. Further, since the filling property of all powders is improved, the fluidity and the strength development are improved.
【００１９】このようにして、分散性が向上した超微粒
子を含む上記粉体はセメントや高炉スラグ微粉末と任意
の割合で混合することができ、単に混合したのみでも、
超微粒子の分散効果が十分に発揮され、優れた物性が得
られる。In this way, the above-mentioned powder containing ultrafine particles having improved dispersibility can be mixed with cement or blast furnace slag fine powder at an arbitrary ratio, or by simply mixing,
The dispersion effect of the ultrafine particles is sufficiently exerted, and excellent physical properties are obtained.
【００２０】特に、本発明においては、セメントクリン
カ及び／又は高炉水砕スラグと超微粒子からなる粉体と
の混合粉砕にあたり、超微粒子からなる粉体を造粒凝集
状態で供給するため、超微粒子からなる粉体を混合粉砕
工程の通風により多量に飛散させることなくセメントク
リンカ及び／又は高炉水砕スラグ中に均一な分散状態で
混合粉砕することが可能とされる。このため、超微粒子
からなる粉体の分散性が顕著に改善され、全粉体の充填
性がより一層向上するため、流動性及び強度発現性が著
しく改善される。In particular, in the present invention, when the cement clinker and / or the granulated blast furnace slag and the powder consisting of the ultrafine particles are mixed and pulverized, the powder consisting of the ultrafine particles is supplied in a granulated and agglomerated state. It is possible to mix and pulverize the powder consisting of the above into the cement clinker and / or the granulated blast furnace slag in a uniformly dispersed state without being scattered in large amounts by the ventilation in the mixing and pulverizing step. For this reason, the dispersibility of the powder of ultrafine particles is remarkably improved, and the filling property of the whole powder is further improved, so that the fluidity and the strength development are remarkably improved.
【００２１】[0021]
【実施例】以下に実施例及び比較例を挙げて本発明をよ
り具体的に説明する。EXAMPLES The present invention will be described more specifically with reference to Examples and Comparative Examples below.
【００２２】比較例１ 普通ポルトランドセメントを製造している仕上ミル（閉
回路式チューブミル）のミル前から、非顆粒状シリカフ
ューム粉末をセメントの内割で１０重量％となるように
添加して混合粉砕し、ブレーン値５６００ｃｍ2 ／ｇ、
粒径４．８μｍ以上の粒子含有割合６．３重量％のシリ
カフューム混入普通ポルトランドセメントを得た。この
セメントを用いて表１の配合（ただし、混和剤（高性能
ＡＥ減水剤）使用量は表２に示す。）でコンクリートを
調製し、物性試験を実施した。結果を表２に示す。な
お、スランプは表２に示す混和剤（高性能ＡＥ減水剤）
の使用量で表１に示す値となるように調節した。COMPARATIVE EXAMPLE 1 Non-granular silica fume powder is added and mixed from before the finishing mill (closed-circuit tube mill) producing ordinary Portland cement so that the content of the cement is 10% by weight based on the cement content. Crushed to a Blaine value of 5600 cm 2 / g,
A silica fume-mixed ordinary Portland cement having a particle content of 6.3% by weight having a particle size of 4.8 μm or more was obtained. Using this cement, concrete was prepared with the composition shown in Table 1 (however, the amount of the admixture (high-performance AE water reducing agent) used is shown in Table 2), and a physical property test was carried out. The results are shown in Table 2. The slump is an admixture (high-performance AE water reducing agent) shown in Table 2.
The amount used was adjusted to the value shown in Table 1.
【００２３】[0023]
【表１】 [Table 1]
【００２４】実施例１ 比較例１において、シリカフュームに少量の水を滴下し
ながらバグミル内でシリカフュームを混練し、出口の解
砕機によってほぐしながら供給したこと以外は同様にし
てポルトランドセメントを製造し、同様に物性試験を実
施した。結果を表２に示す。Example 1 A portland cement was produced in the same manner as in Comparative Example 1, except that silica fume was kneaded in a bag mill while a small amount of water was added dropwise to the silica fume, and was fed while being loosened by a crusher at the outlet. A physical property test was carried out. The results are shown in Table 2.
【００２５】実施例２ 比較例１において、シリカフュームを１０ｋｇ／ｃｍ2
でプレスし、小塊状の凝集状態として供給したこと以外
は同様にしてポルトランドセメントを製造し、同様に物
性試験を実施した。結果を表２に示す。Example 2 In Comparative Example 1, 10 kg / cm 2 of silica fume was added.
The Portland cement was manufactured in the same manner except that it was pressed in and was supplied in the form of small aggregates, and the physical property test was conducted in the same manner. The results are shown in Table 2.
【００２６】[0026]
【表２】 [Table 2]
【００２７】表２より、非顆粒状シリカフュームを仕上
ミルに給鉱する際に、バグミル、プレス等で強く凝集さ
せて給鉱して混合粉砕すると、粉体のまま給鉱する場合
に比べ、同一スランプにするための高性能ＡＥ減水剤の
使用量が減少し、強度発現性が著しく改善されることが
明らかである。From Table 2, when the non-granular silica fume is fed to the finishing mill, when it is strongly agglomerated by a bag mill, a press or the like and fed and mixed and pulverized, it is the same as when fed as a powder. It is clear that the amount of the high-performance AE water reducing agent used for forming the slump is reduced and the strength development is remarkably improved.
【００２８】[0028]
【発明の効果】以上詳述した通り、本発明の高強度セメ
ントの製造方法によれば、セメント中に著しく均一な分
散状態で超微粒子を混合することができることから、超
微粒子添加によるセメント物性改善効果が十分に発揮さ
れる。従って、本発明により得られたセメントを用いる
ことにより、流動性、強度発現性等の各種特性に優れた
セメントペースト、モルタル又はコンクリートが提供さ
れる。As described in detail above, according to the method for producing a high-strength cement of the present invention, since it is possible to mix ultrafine particles in the cement in a remarkably uniform dispersion state, it is possible to improve the physical properties of cement by adding ultrafine particles. The effect is fully exerted. Therefore, by using the cement obtained by the present invention, a cement paste, mortar or concrete having various properties such as fluidity and strength development is provided.
Claims (1)
をセメントクリンカ及び／又は高炉水砕スラグと混合粉
砕する工程を有するセメントの製造方法であって、粒径
１μｍ以下の超微粒子を造粒した後混合粉砕することを
特徴とする高強度セメントの製造方法。1. A method for producing cement, which comprises a step of mixing and pulverizing a powder of ultrafine particles having a particle size of 1 μm or less with a cement clinker and / or granulated blast furnace slag, and producing ultrafine particles having a particle size of 1 μm or less. A method for producing high-strength cement, which comprises mixing and crushing after granulating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03940292A JP3146593B2 (en) | 1992-02-26 | 1992-02-26 | Manufacturing method of high strength cement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03940292A JP3146593B2 (en) | 1992-02-26 | 1992-02-26 | Manufacturing method of high strength cement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05238788A true JPH05238788A (en) | 1993-09-17 |
| JP3146593B2 JP3146593B2 (en) | 2001-03-19 |
Family
ID=12552002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03940292A Expired - Fee Related JP3146593B2 (en) | 1992-02-26 | 1992-02-26 | Manufacturing method of high strength cement |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3146593B2 (en) |
Cited By (8)
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|---|---|---|---|---|
| WO2007052464A1 (en) * | 2005-10-31 | 2007-05-10 | Taiheiyo Cement Corporation | Apparatus for adding wet ash to cement and addition method |
| JP2008162842A (en) * | 2006-12-28 | 2008-07-17 | Taiheiyo Material Kk | High-strength admixture for mortar or concrete |
| US7837963B2 (en) | 2006-10-24 | 2010-11-23 | Taiheiyo Cement Corporation | Method for removing lead from cement burning furnace |
| US7947229B2 (en) | 2005-08-26 | 2011-05-24 | Taiheiyo Cement Corporation | Apparatus and method for dissolution reaction |
| WO2012090884A1 (en) * | 2010-12-28 | 2012-07-05 | 太平洋セメント株式会社 | Cement admixture, cement additive and method for producing mixed cement |
| US8439202B2 (en) | 2006-12-05 | 2013-05-14 | Taiheiyo Cement Corporation | Coal ash treatment method and apparatus |
| US8607469B2 (en) | 2006-06-28 | 2013-12-17 | Taiheiyo Cement Corporation | Cement burning apparatus and method of drying high-water-content organic waste |
| US8893892B2 (en) | 2005-12-07 | 2014-11-25 | Taiheiyo Cement Corporation | Apparatus and method for removing unburned carbon from fly ash |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7947229B2 (en) | 2005-08-26 | 2011-05-24 | Taiheiyo Cement Corporation | Apparatus and method for dissolution reaction |
| WO2007052464A1 (en) * | 2005-10-31 | 2007-05-10 | Taiheiyo Cement Corporation | Apparatus for adding wet ash to cement and addition method |
| US8282263B2 (en) | 2005-10-31 | 2012-10-09 | Taiheiyo Cement Corporation | Apparatus and method for adding wet ash to cement |
| JP5147408B2 (en) * | 2005-10-31 | 2013-02-20 | 太平洋セメント株式会社 | Wet ash cement addition device and addition method |
| KR101292162B1 (en) * | 2005-10-31 | 2013-08-09 | 다이헤이요 세멘토 가부시키가이샤 | Apparatus for adding wet ash to cement and addition method |
| US8893892B2 (en) | 2005-12-07 | 2014-11-25 | Taiheiyo Cement Corporation | Apparatus and method for removing unburned carbon from fly ash |
| US8607469B2 (en) | 2006-06-28 | 2013-12-17 | Taiheiyo Cement Corporation | Cement burning apparatus and method of drying high-water-content organic waste |
| US7837963B2 (en) | 2006-10-24 | 2010-11-23 | Taiheiyo Cement Corporation | Method for removing lead from cement burning furnace |
| US8439202B2 (en) | 2006-12-05 | 2013-05-14 | Taiheiyo Cement Corporation | Coal ash treatment method and apparatus |
| JP2008162842A (en) * | 2006-12-28 | 2008-07-17 | Taiheiyo Material Kk | High-strength admixture for mortar or concrete |
| WO2012090884A1 (en) * | 2010-12-28 | 2012-07-05 | 太平洋セメント株式会社 | Cement admixture, cement additive and method for producing mixed cement |
| JP5031131B2 (en) * | 2010-12-28 | 2012-09-19 | 太平洋セメント株式会社 | Cement mixed material, cement additive, and mixed cement manufacturing method |
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|---|---|
| JP3146593B2 (en) | 2001-03-19 |
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