JP3300118B2 - Manufacturing method of calcium silicate plate - Google Patents
Manufacturing method of calcium silicate plateInfo
- Publication number
- JP3300118B2 JP3300118B2 JP18617093A JP18617093A JP3300118B2 JP 3300118 B2 JP3300118 B2 JP 3300118B2 JP 18617093 A JP18617093 A JP 18617093A JP 18617093 A JP18617093 A JP 18617093A JP 3300118 B2 JP3300118 B2 JP 3300118B2
- Authority
- JP
- Japan
- Prior art keywords
- slurry
- raw material
- calcium silicate
- ratio
- silicate plate
- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/18—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing mixtures of the silica-lime type
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、珪酸カルシウム板の製
造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a calcium silicate plate.
【０００２】[0002]
【従来の技術・課題】従来、抄造法により製造されてい
るノンアスベスト珪酸カルシウム板の多くは、石灰質原
料、珪酸質原料及び軽量骨材等の充填材とセルロース繊
維等の補強材を抄造後に水熱反応を行うことにより製造
されており、かさ比重は通常０.７〜１.２の範囲であ
る。しかし、珪酸カルシウム板の用途は、天井材、壁材
等の内装材であり、更に、軽量、高強度の材料が望まれ
ているが、上述の方法では、かさ比重を０.５０〜０.７
０と軽量化するためには、かなりの軽量充填材を配合す
る必要があり、比強度も低下するので、曲げ強度が著し
く低下するという問題があった。また、特開昭52−1059
26号公報に例示されているように石灰質原料と珪酸質原
料のスラリーを加熱してゲル化スラリーとし軽量化を図
る方法もある。しかし、この方法もかさ比重は低くなる
が、曲げ強度の低下は避けられず、更に抄造時の生産性
及び板表面の地合が悪くなるという欠点を有していた。2. Description of the Related Art Conventionally, many non-asbestos calcium silicate plates manufactured by a papermaking method are often prepared by forming fillers such as calcareous raw materials, siliceous raw materials and lightweight aggregates, and reinforcing materials such as cellulose fibers, and then forming water. It is produced by performing a thermal reaction, and the bulk specific gravity is usually in the range of 0.7 to 1.2. However, the use of the calcium silicate plate is for interior materials such as ceiling materials and wall materials, and furthermore, lightweight and high-strength materials are desired. However, in the above-mentioned method, the bulk specific gravity is 0.50 to 0.5. 7
In order to reduce the weight to zero, it is necessary to mix a considerably lightweight filler, and the specific strength is also reduced, so that there is a problem that the bending strength is significantly reduced. Also, JP-A-52-1059
As exemplified in Japanese Patent Publication No. 26, there is a method of heating a slurry of a calcareous raw material and a siliceous raw material to form a gelled slurry to reduce the weight. However, this method also has a drawback that although the bulk specific gravity is low, a decrease in bending strength is inevitable, and furthermore, productivity during papermaking and formation of a plate surface are deteriorated.
【０００３】また、他の方法としては特開昭52−105926
号公報及び特開昭52−135390号公報では、珪酸カルシウ
ム水和物の一種であるゾノトライトスラリーあるいは珪
酸カルシウム結晶スラリーを添加することにより比強度
に優れた珪酸カルシウム板が得られることが開示されて
いる。しかし、この方法についても抄造時の生産性が著
しく低下し、安価に大量生産を必要とする建築材料とし
て生産に支障があった。Another method is disclosed in JP-A-52-105926.
JP-A-52-135390 discloses that a calcium silicate plate excellent in specific strength can be obtained by adding a zonotolite slurry or a calcium silicate crystal slurry which is a kind of calcium silicate hydrate. I have. However, also in this method, productivity at the time of papermaking has been remarkably reduced, and there has been a hindrance to production as a building material which requires mass production at low cost.
【０００４】従って、本発明の目的は、上述の問題点を
解決し、軽量、高強度の珪酸カルシウム板の生産性に優
れた製造方法を提供するものである。Accordingly, an object of the present invention is to solve the above-mentioned problems and to provide a method for producing a lightweight and high-strength calcium silicate plate excellent in productivity.
【０００５】[0005]
【課題を解決するための手段】即ち、本発明に係る珪酸
カルシウム板の製造方法は、石灰質原料、珪酸質原料及
び水からＣａ／（Ｓｉ＋Ａｌ）モル比が０．６〜１．１
の範囲内のスラリーを調製する際に、まず、後述のスラ
リー（Ａ）中の全固形分量の３〜１０％の非晶質珪酸原
料と、その２〜７倍量の石灰質原料を常圧下で加熱処理
し、次に、珪酸質原料と石灰質原料の残部を加えて得ら
れるスラリー（Ａ）と、Ｃａ／（Ｓｉ＋Ａｌ）モル比が
０．８〜１．１の範囲内にある石灰質原料、珪酸質原料
及び水よりなるスラリーを水熱合成することにより得ら
れるスラリー（Ｂ）を、ｘ軸をスラリー（Ａ）と（Ｂ）
の合計量に対するスラリー（Ａ）中の非晶質珪酸原料の
割合（％）、ｙ軸をスラリー（Ｂ）の割合（％）とした
座標において、（ｘ、ｙ）がａ（３、１０）、ｂ（３、
５）、ｃ（１０、１０）及びｄ（１０、２０）につい
て、座標ａとｂ、ｂとｃ、ｃとｄ及びｄとａを結ぶ線で
囲まれる範囲内の割合で混合し、更に、スラリー（Ａ）
と（Ｂ）の合計固形分量に対し外割で３〜７％のセルロ
ース繊維及び外割で５〜１２％のウォラストナイトを添
加し、抄造法により成形し、水熱処理後、乾燥すること
を特徴とする。That is, a method for producing a calcium silicate plate according to the present invention comprises a calcareous raw material, a siliceous raw material and water having a Ca / (Si + Al) molar ratio of 0.6 to 1.1.
When preparing a slurry within the range, first, an amorphous silicic acid raw material of 3 to 10% of the total solid content in the slurry (A) described below and a calcareous raw material of 2 to 7 times the amount thereof under normal pressure Heat treatment and then a slurry (A) obtained by adding the rest of the siliceous raw material and the calcareous raw material, a calcareous raw material having a Ca / (Si + Al) molar ratio in the range of 0.8 to 1.1, (B) obtained by hydrothermally synthesizing a slurry composed of a raw material and water, the x-axis is the slurries (A) and (B)
Of the amorphous silicic acid raw material in the slurry (A) with respect to the total amount of
Ratio (%), y-axis is the ratio (%) of slurry (B)
In the coordinates, (x, y) is a (3, 10), b (3,
5), c (10, 10) and d (10, 20)
And a mixture within a range surrounded by a line connecting the coordinates a and b, b and c, c and d, and d and a.
3 to 7% of cellulose fiber and 5 to 12% of wollastonite are added to the total solid content of (B) and (B), molded by a papermaking method, hydrothermally treated, and dried. Features.
【０００６】[0006]
【作用】本発明の珪酸カルシウム板の製造方法において
使用する石灰質原料としては、消石灰、生石灰等が挙げ
られ、また、珪酸質原料としては珪砂、焼成珪藻土等、
非晶質珪酸原料としては、珪藻土、シリカヒューム、ニ
ップシール等が挙げられる。The calcareous raw material used in the method for producing a calcium silicate plate of the present invention includes slaked lime and quicklime, and the siliceous raw materials include silica sand and calcined diatomaceous earth.
Examples of the amorphous silicic acid raw material include diatomaceous earth, silica fume, and nip seal.
【０００７】本発明方法におけるスラリー(Ａ)は、石灰
質原料、珪酸質原料及び水からなるスラリーであり、ま
ず、所定量の水、スラリー(Ａ)の全固形分量の３〜１０
％の非晶質珪酸原料並びにその２〜７倍の石灰質原料を
加熱処理し、次に、石灰質原料の残部と珪酸質原料を加
えてＣａ／(Ｓｉ＋Ａｌ)モル比を０.６〜１.１の範囲内
に調整したものである。スラリー(Ａ)の調製の際に、加
熱処理を非晶質珪酸原料と一部の石灰質原料だけで行う
のは、非晶質珪酸原料は活性度が高いため、全量の石灰
質原料を加えると急激な反応となり、ゲル化が均一に行
われないため、抄造時の地合形成が均一にならないため
である。加熱処理は７５〜９５℃、好ましくは８０〜９
０℃の温度範囲で行われる。更に、スラリー(Ａ)のＣａ
／(Ｓｉ＋Ａｌ)モル比が０.６未満であったり、１.１を
越えると得られる珪酸カルシウム板の曲げ強度及び寸法
安定性が低下する。なお、該モル比は好適には０.８〜
１.０の範囲内である。The slurry (A) in the method of the present invention is a slurry composed of a calcareous raw material, a siliceous raw material and water. First, a predetermined amount of water and 3 to 10 of the total solid content of the slurry (A) are obtained.
% Of the siliceous raw material and 2 to 7 times the calcareous raw material, and then the remainder of the calcareous raw material and the siliceous raw material are added to adjust the Ca / (Si + Al) molar ratio to 0.6 to 1.1. Is adjusted within the range. In the preparation of the slurry (A), the heat treatment is performed only with the amorphous silicic acid raw material and a part of the calcareous raw material, because the amorphous silicic acid raw material has a high activity. This is because the gelation is not performed uniformly and the formation of the formation during papermaking is not uniform. Heat treatment is 75 to 95 ° C, preferably 80 to 9
It is performed in a temperature range of 0 ° C. Further, the slurry (A) Ca
When the / (Si + Al) molar ratio is less than 0.6 or more than 1.1, the bending strength and dimensional stability of the obtained calcium silicate plate decrease. The molar ratio is preferably 0.8 to
It is within the range of 1.0.
【０００８】本発明方法におけるスラリー(Ｂ)は、石灰
質原料と珪酸質原料をＣａ／(Ｓｉ＋Ａｌ)モル比０.８
〜１.１の割合で配合し、更に水を加え、慣用の操作に
て水熱合成を行ったものである。なお、スラリー(Ｂ)中
の未反応石灰量は５％以下であることが好ましい。ここ
で、スラリー(Ｂ)のＣａ／(Ｓｉ＋Ａｌ)モル比が０.８
未満では、未反応珪酸質原料が多くなり、珪酸カルシウ
ム板の軽量化すなわち低比重化には不適であり、また、
該モル比が１.１を越えると、未反応石灰量が５％を越
えるために好ましくない。なお、スラリー(Ｂ)は珪酸カ
ルシウム板の低比重化、高強度化及び寸法安定性の向上
に寄与する。The slurry (B) in the method of the present invention comprises a calcareous raw material and a siliceous raw material in a Ca / (Si + Al) molar ratio of 0.8.
The mixture was blended at a ratio of ~ 1.1, further added with water, and hydrothermally synthesized by a conventional operation. The amount of unreacted lime in the slurry (B) is preferably 5% or less. Here, the Ca / (Si + Al) molar ratio of the slurry (B) is 0.8.
Below, the unreacted siliceous raw material increases, which is not suitable for reducing the weight of the calcium silicate plate, that is, reducing the specific gravity.
If the molar ratio exceeds 1.1, the amount of unreacted lime exceeds 5%, which is not preferable. The slurry (B) contributes to lowering the specific gravity, increasing the strength, and improving the dimensional stability of the calcium silicate plate.
【０００９】上記スラリー（Ａ）とスラリー（Ｂ）の配
合割合について、スラリー（Ａ）と（Ｂ）の合計量に対
するスラリー（Ａ）中の非晶質珪酸原料の配合割合とス
ラリー（Ｂ）の割合の関係として図１に示すｘ軸をスラ
リー（Ａ）と（Ｂ）の合計量に対するスラリー（Ａ）中
の非晶質珪酸原料の割合（％）、ｙ軸をスラリー（Ｂ）
の割合（％）とした座標において、（ｘ、ｙ）がａ
（３、１０）、ｂ（３、５）、ｃ（１０、１０）及びｄ
（１０、２０）について、座標ａとｂ、ｂとｃ、ｃとｄ
及びｄとａを結ぶ線で囲まれる範囲内である。ここで、
図１の座標ａとｂを結ぶ線よりも左側では、スラリー
（Ａ）中の非晶質珪酸原料が少ないため、加熱処理によ
るゲル化が少なく、スラリー（Ｂ）を加えるとろ水性が
低下し、抄造時にゾウハダやタネノビという現象が起こ
り、生産性が悪くなる。また、図１の座標ｃとｄを結ぶ
線よりも右側では、スラリー（Ａ）の加熱処理において
かさ高となるため、低比重となり過ぎ、スラリー（Ｂ）
の割合を少なくする必要があるため、高強度が得られな
い。なお、図１の座標ｂとｃを結ぶ線より下では、スラ
リー（Ｂ）の割合が少ないため、各々の比重に対する必
要な強度が得られず、寸法安定性も悪くなる。座標ｄと
ａを結ぶ線より上では、スラリー（Ｂ）の割合が多いた
め、ろ水性が低下し、生産性が悪くなる。With respect to the mixing ratio of the slurry (A) and the slurry (B), the mixing ratio of the amorphous silicic acid raw material in the slurry (A) to the total amount of the slurry (A) and (B) and the mixing ratio of the slurry (B) The x-axis shown in FIG.
Slurry (A) based on the total amount of Lee (A) and (B)
Of amorphous silica raw material (%), y-axis is slurry (B)
(X, y) is a
(3,10), b (3,5), c (10,10) and d
For (10, 20), coordinates a and b, b and c, c and d
And a range surrounded by a line connecting d and a . here,
On the left side of the line connecting the coordinates a and b in FIG. 1, since the amount of the amorphous silicic acid raw material in the slurry (A) is small, the gelation due to the heat treatment is small, and the freeness decreases when the slurry (B) is added. At the time of papermaking, phenomena such as elephant and tanobi occur, resulting in poor productivity. Further, on the right side of the line connecting the coordinates c and d in FIG. 1, the slurry (A) becomes bulky in the heat treatment, so that the specific gravity becomes too low and the slurry (B)
, A high strength cannot be obtained. In addition, below the line connecting the coordinates b and c in FIG. 1, since the ratio of the slurry (B) is small, the required strength for each specific gravity cannot be obtained, and the dimensional stability is deteriorated. Above the line connecting the coordinates d and a, the ratio of the slurry (B) is large, so that the drainage decreases and the productivity deteriorates.
【００１０】ウォラストナイトは抄造後、養生前の珪酸
カルシウム板の保形性及び寸法安定性に効果があるが、
その添加量がスラリー(Ａ)と(Ｂ)の合計固形分量に対し
て外割で５％未満では、その影響が少なく、１０％を越
えると曲げ強度が低下する。ここで、使用するウォラス
トナイトは沈降体積が２５ｃｃ以上であることが好まし
い。なお、沈降体積は２００ｃｃのメスシリンダーに水
２００ｃｃとウォラストナイト３ｇを加え、転倒撹拌３
時間後に測定したものである。[0010] Wollastonite has an effect on shape retention and dimensional stability of a calcium silicate plate after papermaking and before curing.
If the amount of addition is less than 5% of the total solid content of the slurries (A) and (B), the effect is small, and if it exceeds 10%, the flexural strength decreases. Here, it is preferable that the wollastonite used has a sedimentation volume of 25 cc or more. In addition, 200 cc of water and 3 g of wollastonite were added to a 200 cc measuring cylinder, and the sedimentation volume was 3 minutes.
It was measured after hours.
【００１１】また、セルロース繊維は、スラリー(Ａ)と
(Ｂ)の合計固形分量に対して外割で３％未満では補強効
果が少なく、抄造時の粉体原料のロスが多くなる。ま
た、７％を越えると不燃性が得られなくなる。Further, the cellulose fibers are mixed with the slurry (A).
If the total solid content of (B) is less than 3%, the reinforcing effect is small, and the loss of the powder raw material during papermaking increases. On the other hand, if it exceeds 7%, nonflammability cannot be obtained.
【００１２】なお、上述のようにして得られたスラリー
を使用して慣用の方法により抄造し、水熱処理し並びに
乾燥することにより本発明の珪酸カルシウム板を得るこ
とができる。抄造には、丸網式、長網式のいずれも使用
できる。また、抄造により得られた珪酸カルシウム生板
の水熱処理は、１４０〜１７０℃程度の温度で行うこと
が好ましく、更に、乾燥雰囲気は１００〜１６０℃が適
している。The calcium silicate plate of the present invention can be obtained by using the slurry obtained as described above to make a paper by a conventional method, subjecting it to a hydrothermal treatment and drying. For papermaking, both round net type and long net type can be used. Further, the hydrothermal treatment of the raw calcium silicate sheet obtained by papermaking is preferably performed at a temperature of about 140 to 170 ° C, and the drying atmosphere is suitably at 100 to 160 ° C.
【００１３】[0013]
【実施例】 スラリー(Ａ)の調製 下記の表１に示すように非晶質珪酸原料と石灰質原料を
各々の加熱条件で処理した後、石灰質原料及び珪酸質原
料の２次添加を行ってスラリー(Ａ)を得た。Example Preparation of Slurry (A) As shown in Table 1 below, an amorphous silicic acid raw material and a calcareous raw material were treated under respective heating conditions, and then a secondary addition of the calcareous raw material and the siliceous raw material was performed to obtain a slurry. (A) was obtained.
【００１４】[0014]
【表１】 [Table 1]
【００１５】スラリー(Ｂ)の調製 下記の表２に示すＣａ／(Ｓｉ＋Ａｌ)モル比及び条件に
てスラリーを水熱合成することによりスラリー(Ｂ)を調
製した。Preparation of Slurry (B) A slurry (B) was prepared by hydrothermally synthesizing the slurry at the Ca / (Si + Al) molar ratio and conditions shown in Table 2 below.
【００１６】[0016]
【表２】 [Table 2]
【００１７】実施例 表３に、本発明による珪酸カルシウム板の製造条件、配
合及び得られた珪酸カルシウム板の諸特性を記載する。
なお、抄造は、丸網式の実験用マシンで行い、３５０×
１２００×６ｍｍに成形し、１８０℃・１０時間の条件
で水熱処理後、撹拌機付乾燥機を用い、１０５℃の雰囲
気で乾燥し、含水率を８〜１２％に調整した。その後、
ＪＩＳ Ａ５４１８に準じて試験を行ったが、曲げ強度
のサイズのみ４号試験片に変更した。また、図２は実施
例１〜４における非晶質珪酸原料の割合とスラリー(Ｂ)
の割合の関係を示した。EXAMPLES Table 3 shows the manufacturing conditions, blending and various properties of the calcium silicate plate according to the present invention.
Note that the papermaking was performed using a round net type experimental machine,
It was formed into a size of 1200 × 6 mm, hydrothermally treated at 180 ° C. for 10 hours, and then dried in a 105 ° C. atmosphere using a dryer with a stirrer to adjust the water content to 8 to 12%. afterwards,
The test was performed according to JIS A5418, but only the size of the bending strength was changed to a No. 4 test piece. FIG. 2 shows the ratio of the amorphous silicic acid raw material and the slurry (B) in Examples 1 to 4.
The relationship of the percentages was shown.
【００１８】[0018]
【表３】 [Table 3]
【００１９】比較例 表４には、比較例による珪酸カルシウム板の製造条件、
配合及び得られた珪酸カルシウム板の諸特性を記載す
る。また、図３には、比較例１〜１０における非晶質珪
酸原料の割合とスラリー(Ｂ)の割合の関係を示した。Comparative Example Table 4 shows the manufacturing conditions of the calcium silicate plate according to the comparative example,
The blending and various properties of the obtained calcium silicate plate are described. FIG. 3 shows the relationship between the ratio of the amorphous silicic acid raw material and the ratio of the slurry (B) in Comparative Examples 1 to 10.
【００２０】[0020]
【表４】 [Table 4]
【００２１】[0021]
【発明の効果】本発明方法によれば、上述のように２種
類のスラリーを併用し、更に、ウォラストナイトを使用
することにより、軽量、高強度で寸法安定性に優れた珪
酸カルシウム板を提供することができる。According to the method of the present invention, by using two kinds of slurries as described above and further using wollastonite, a calcium silicate plate having a light weight, high strength and excellent dimensional stability can be obtained. Can be provided.
【図１】スラリー(Ａ)の非晶質珪酸原料の全配合に対す
る割合と、スラリー(Ｂ)の割合の関係を示すグラフであ
る。FIG. 1 is a graph showing the relationship between the ratio of the slurry (A) to the total amount of the amorphous silicic acid raw material and the ratio of the slurry (B).
【図２】実施例１〜４におけるスラリー(Ａ)の非晶質珪
酸原料の全配合に対する割合とスラリー(Ｂ)の割合の関
係を示すグラフである。FIG. 2 is a graph showing the relationship between the ratio of the slurry (A) to the total amount of the amorphous silicic acid raw material and the ratio of the slurry (B) in Examples 1 to 4.
【図３】比較例１〜１０におけるスラリー(Ａ)の非晶質
珪酸原料の全配合に対する割合とスラリー(Ｂ)の割合の
関係を示すグラフである。FIG. 3 is a graph showing the relationship between the ratio of the slurry (A) to the total amount of the amorphous silicic acid raw material and the ratio of the slurry (B) in Comparative Examples 1 to 10.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 岩永 朋来 茨城県石岡市大字柏原６番１号 株式会 社アスク 中央研究所内 (72)発明者 尾塩 泰英 茨城県石岡市大字柏原６番１号 株式会 社アスク 中央研究所内 (72)発明者 白本 盛光 茨城県石岡市大字柏原６番１号 株式会 社アスク 中央研究所内 (56)参考文献 特開 昭52−135330（ＪＰ，Ａ) 特開 昭52−130815（ＪＰ，Ａ) 特開 昭52−105926（ＪＰ，Ａ) 特開 昭49−8518（ＪＰ，Ａ) 特開 昭49−8521（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) C04B 2/00 - 32/02 C04B 40/00 - 40/06 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Tomoki Iwanaga 6-1, Kashiwabara, Ishioka, Ibaraki Pref. Inside the ASK Central Research Institute Co., Ltd. (72) Yasuhide Oshio 6-1, Kashiwara, Ishioka, Ibaraki Stock Company (72) Inventor Moritsumitsu Shiramoto 6-1 Kashiwara, Ishioka, Ibaraki Pref. Inside Ask Central Research Institute (56) References JP-A-52-135330 (JP, A) JP-A-52 JP-A-130815 (JP, A) JP-A-52-105926 (JP, A) JP-A-49-8518 (JP, A) JP-A-49-8521 (JP, A) (58) Fields investigated (Int. . 7, DB name) C04B 2/00 - 32/02 C04B 40/00 - 40/06
Claims (1)
石灰質原料、珪酸質原料及び水からＣａ／（Ｓｉ＋Ａ
ｌ）モル比が０．６〜１．１の範囲内のスラリーを調製
する際に、まず、後述のスラリー（Ａ）中の全固形分量
の３〜１０％の非晶質珪酸原料と、その２〜７倍量の石
灰質原料を常圧下で加熱処理し、次に、珪酸質原料と石
灰質原料の残部を加えて得られるスラリー（Ａ）と、Ｃ
ａ／（Ｓｉ＋Ａｌ）モル比が０．８〜１．１の範囲内に
ある石灰質原料、珪酸質原料及び水よりなるスラリーを
水熱合成することにより得られるスラリー（Ｂ）を、ｘ
軸をスラリー（Ａ）と（Ｂ）の合計量に対するスラリー
（Ａ）中の非晶質珪酸原料の割合（％）、ｙ軸をスラリ
ー（Ｂ）の割合（％）とした座標において、（ｘ、ｙ）
がａ（３、１０）、ｂ（３、５）、ｃ（１０、１０）及
びｄ（１０、２０）について、座標ａとｂ、ｂとｃ、ｃ
とｄ及びｄとａを結ぶ線で囲まれる範囲内の割合で混合
し、更に、スラリー（Ａ）と（Ｂ）の合計固形分量に対
し外割で３〜７％のセルロース繊維及び外割で５〜１２
％のウォラストナイトを添加し、抄造法により成形し、
水熱処理後、乾燥することを特徴とする珪酸カルシウム
板の製造方法。1. A method for producing a calcium silicate plate, comprising:
Ca / (Si + A) from calcareous material, siliceous material and water
1) When preparing a slurry having a molar ratio in the range of 0.6 to 1.1, first, an amorphous silicic acid raw material of 3 to 10% of the total solid content in the slurry (A) described below, 2 to 7 times the amount of calcareous material is subjected to heat treatment under normal pressure, and then the slurry (A) obtained by adding the rest of the siliceous material and calcareous material, and C
A slurry (B) obtained by hydrothermally synthesizing a slurry composed of a calcareous raw material, a siliceous raw material and water having a / (Si + Al) molar ratio in the range of 0.8 to 1.1 is represented by x
Slurry with respect to the total amount of slurry (A) and (B)
(A) Ratio of amorphous silicic acid raw material (%), slurry on y-axis
-(B) at coordinates (%), (x, y)
Are a (3,10), b (3,5), c (10,10) and
And d (10, 20), coordinates a and b, b and c, c
And d and d and a at a ratio within the range enclosed by the line connecting a . Further, the cellulose fiber is 3 to 7% in terms of the total solid content of the slurries (A) and (B). 5-12
% Wollastonite is added and molded by a papermaking method,
A method for producing a calcium silicate plate, comprising drying after hydrothermal treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18617093A JP3300118B2 (en) | 1993-07-28 | 1993-07-28 | Manufacturing method of calcium silicate plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18617093A JP3300118B2 (en) | 1993-07-28 | 1993-07-28 | Manufacturing method of calcium silicate plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0741354A JPH0741354A (en) | 1995-02-10 |
| JP3300118B2 true JP3300118B2 (en) | 2002-07-08 |
Family
ID=16183623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18617093A Expired - Fee Related JP3300118B2 (en) | 1993-07-28 | 1993-07-28 | Manufacturing method of calcium silicate plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3300118B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19982979C2 (en) * | 1998-02-23 | 2002-08-08 | Asahi Chemical Ind | High strength hardened calcium silicate material and process for its manufacture |
| JP2001122674A (en) * | 1999-08-19 | 2001-05-08 | Asahi Kasei Corp | High strength calcium silicate-hardened body |
| JP4694708B2 (en) * | 2001-03-26 | 2011-06-08 | 株式会社エーアンドエーマテリアル | Method for producing calcium silicate molded body |
| JP4902008B1 (en) * | 2011-07-25 | 2012-03-21 | 関西保温工業株式会社 | Inorganic binder and molded article produced using the same |
| JP5497958B1 (en) * | 2013-10-16 | 2014-05-21 | ニチアス株式会社 | Calcium silicate plate and method for producing the same |
-
1993
- 1993-07-28 JP JP18617093A patent/JP3300118B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0741354A (en) | 1995-02-10 |
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