JPH0710722B2 - Calcium silicate and method for producing the same - Google Patents
Calcium silicate and method for producing the sameInfo
- Publication number
- JPH0710722B2 JPH0710722B2 JP62278662A JP27866287A JPH0710722B2 JP H0710722 B2 JPH0710722 B2 JP H0710722B2 JP 62278662 A JP62278662 A JP 62278662A JP 27866287 A JP27866287 A JP 27866287A JP H0710722 B2 JPH0710722 B2 JP H0710722B2
- Authority
- JP
- Japan
- Prior art keywords
- calcium silicate
- water
- crystal
- main component
- xonotlite
- 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
Description
【発明の詳細な説明】 （産業上の利用分野） この発明は、濾水性がよくて抄造に適するゾノトライト
を主成分とする珪酸カルシウムおよびその製造方法に関
する。Description: TECHNICAL FIELD The present invention relates to a calcium silicate containing xonotlite as a main component, which has good drainage properties and is suitable for papermaking, and a method for producing the same.
（従来の技術） 以前からパイプに珪酸カルシウムを多量に添加した原料
を抄造してシート状物、例えば不燃紙を得る試みが提案
されている。例えば特開昭58-98495号では珪酸カルシウ
ムを主成分とする不燃紙が、また特開昭62-53498号では
珪酸カルシウムと水酸化アルミニウムとを組み合わせた
もので、高強度でかつ難燃性の高い不燃紙が提案されて
いる。しかしながら、現実に工業生産設備で珪酸カルシ
ウムをパルプに添加したものを抄造してみると、珪酸カ
ルシウムのもつ高い保水性のため濾水がわるく、抄造機
を効率よく運転することができないという問題があっ
た。また、脱水が不充分なためにロール型ドライヤーや
メーキングロールで湿潤シートが切断するなどのトラブ
ルもあった。(Prior Art) It has been proposed for some time to make a raw material in which a large amount of calcium silicate is added to a pipe to obtain a sheet-like material, for example, non-combustible paper. For example, in JP-A-58-98495, a non-combustible paper containing calcium silicate as a main component, and in JP-A-62-53498, a combination of calcium silicate and aluminum hydroxide, which has high strength and flame retardancy, is used. Highly non-combustible paper has been proposed. However, when actually making paper with calcium silicate added to pulp in an industrial production facility, there is a problem that the drainage is poor due to the high water retention of calcium silicate and the papermaking machine cannot be operated efficiently. there were. Further, there was a problem that the wet sheet was cut by a roll type dryer or a making roll due to insufficient dehydration.
水熱合成により得られるゾノトライトを主成分とする珪
酸カルシウムは、結晶がマリモ性、麦穂状など各種の形
態をした凝集体をなしているが、これらを成形する場合
も通常これらの凝集体の形を壊すことなくプレス成形な
どがなされているので、マリモ状、その他の各種の結晶
凝集形態が最終製品にそのまま残っている。そしてこれ
を抄造する場合は、珪酸カルシウム結晶の凝集体を多量
の水の中に離解、分散させたのち繊維質とともにこれを
抄きあげていた。こうした珪酸カルシウムの結晶凝結体
を多量に添加した原料を抄造する場合は、これまで濾水
性が常に問題となっていたが、今日までこの問題を解決
したという報告は見当らない。Calcium silicate containing xonotlite as the main component obtained by hydrothermal synthesis has agglomerates in which the crystals have various forms such as marimo and wheat spikes, but when these are molded, the shape of these agglomerates is usually used. Since press molding and the like are performed without breaking, the marimo-shaped and other various crystal agglomerated forms remain as they are in the final product. When this was made into a paper, the aggregate of calcium silicate crystals was disintegrated and dispersed in a large amount of water, and then this was made together with the fibrous material. In the case of making a raw material by adding a large amount of calcium silicate crystal aggregates, drainage has always been a problem until now, but no report has been found to solve this problem to date.
従来から、各種結晶形態のゾノトライトを生成し、その
特徴を生かした製品を製造する技術が提案されている。
しかしながら、上述した各種の結晶の凝集体では、いづ
れも抄造をスムースに行うことがでなかった。即ち、珪
酸カルシウム結晶の凝集体の形状を各種のものとするこ
れまでの提案の中には、濾水性をよくして抄造に適する
ゾノトライトの提案を見ることは出来なかった。2. Description of the Related Art Conventionally, there has been proposed a technique for producing xonotlite having various crystal forms and producing a product making the best use of the characteristics.
However, none of the above-mentioned aggregates of various crystals can be smoothly produced. That is, among the proposals so far made into various shapes of aggregates of calcium silicate crystals, it was not possible to find a proposal of xonotlite having improved drainage and suitable for papermaking.
また、特開昭48-19498号には太さ0.05μｍ以下の極細の
針状結晶とする技術が、特開昭56-104710号にはアスペ
クト比50以上の珪酸カルシウム結晶の技術が開示されて
いるが、これらも抄造する際の濾水性の問題を解決する
ものではなかった。Further, Japanese Unexamined Patent Publication No. 48-19498 discloses a technique for forming ultrafine needle-shaped crystals having a thickness of 0.05 μm or less, and Japanese Unexamined Patent Publication No. 56-104710 discloses a technique for calcium silicate crystals having an aspect ratio of 50 or more. However, they also did not solve the problem of drainage during papermaking.
（発明が解決しようとする問題点） この発明は、ゾノトライトを主成分とする珪酸カルシウ
ムを添加した原料スラリーを抄造する場合に、濾水性が
良好で抄紙機が迅速に運転できるような珪酸カルシウム
を得ようとするものである。(Problems to be Solved by the Invention) The present invention provides a calcium silicate that has good drainage and enables a paper machine to be operated quickly when a raw material slurry containing calcium silicate containing xonotlite as a main component is produced. It's about to get.
（問題点を解決するための手段） この発明は、水中に離解，分散せたときの沈降体積が30
0ml以下であるゾノトライトを主成分とした珪酸カルシ
ウム、およびその製造方法として、石灰原料と250メッ
シュ水フルイ残分が５〜15％の珪石粉末に水を加えて水
／固体重量比を10以上とし、これを水熱合成することを
特徴とする珪酸カルシウムの製造方法、並びに沈降体積
が300ml以下のあるいは300mlを超える珪酸カルシウムを
乾燥後に解砕することを特徴とするものである。なお、
第１の発明の一つの実施態様としては、単一結晶が円柱
状であり、結晶径が0.1〜1.0μｍでかつ結晶の長さ／径
の比が２〜20の範囲にある珪酸カルシウムである。以下
に、これらの発明を説明する。(Means for Solving Problems) This invention has a sedimentation volume of 30 when disaggregated and dispersed in water.
Calcium silicate containing xonotlite as the main component in an amount of 0 ml or less, and as a method for producing the same, water is added to a lime raw material and silica stone powder having a 250 mesh water sieve residue of 5 to 15% to make the water / solid weight ratio 10 or more. And a method for producing calcium silicate characterized by hydrothermally synthesizing the same, and crushing after drying calcium silicate having a sedimentation volume of 300 ml or less or more than 300 ml. In addition,
In one embodiment of the first invention, the single crystal is a columnar calcium silicate having a crystal diameter of 0.1 to 1.0 μm and a crystal length / diameter ratio of 2 to 20. . These inventions will be described below.
発明者らは、珪酸カルシウムを添加した原料スラリーを
抄紙する際の生産上の一つのネックとされていた濾水性
の改善のために多くの実験を重ねていったところ、抄紙
時の濾水性は、珪酸カルシウムを水中に離解、分散した
後に一定条件下で測定された沈降体積と関係すること
を、たまたま見い出したものである。すなわち、珪酸カ
ルシウム結晶を水中に分散した後に一定条件で測定され
る沈降体積を測定した場合、その沈降体積が300ml以下
であるゾノトライトを主成分とする珪酸カルシウムを用
いると良好な濾水性を示すことを見出したものである。The inventors conducted many experiments to improve drainage, which was one of the bottleneck in production when making a raw material slurry to which calcium silicate was added, and the drainage at the time of papermaking was It was accidentally found that calcium silicate is related to the sedimentation volume measured under certain conditions after disintegration and dispersion in water. That is, when the sedimentation volume measured under certain conditions after dispersing the calcium silicate crystals in water is measured, it shows that the sedimentation volume is 300 ml or less and good drainage can be obtained by using calcium silicate containing xonotlite as a main component. Is found.
ここでいう沈降体積の測定方法は、以下の通りである。The method of measuring the sedimentation volume here is as follows.
珪酸カルシウムのスラリー状、ケーキ状または乾燥
固形状物を絶乾重量換算で12.0gに水を加えて全容積を3
00mlとし、高速ミキサー（360W、回転数14700r.p.m.）
で30秒間強制撹拌する。Add water to 12.0 g of calcium silicate slurry, cake, or dry solid to convert the total volume to 3
00ml, high speed mixer (360W, rotation speed 14700r.pm)
Force stirring for 30 seconds.
ミキサー中の内容物を500mlのメスシリンダーに移
し、これに水を加えて全容積を500mlとし濃度が均一に
なるように撹拌する。The contents in the mixer are transferred to a 500 ml graduated cylinder, water is added to this to bring the total volume to 500 ml, and the mixture is stirred so that the concentration becomes uniform.
２時間放置してから沈降物の体積をメスシリンダー
の目盛より読み取る。After standing for 2 hours, the volume of the sediment is read from the scale of the graduated cylinder.
このようにしたものの沈降体積300ml以下の珪酸カルシ
ウムの単一結晶形状を電子顕微鏡で観察すると、これら
の共通の形状的特徴として結晶径が0.1〜1.0μの範囲に
あり、さらに結晶の長さ／径の比率（アスペクト比）
が、２〜20の範囲にあることが確認された。このような
ゾノトライトの製造法の一つとしては、次の通りであ
る。When the single crystal shape of calcium silicate having a sedimentation volume of 300 ml or less was observed with an electron microscope, the common shape features were that the crystal diameter was in the range of 0.1 to 1.0 μ, and the crystal length / Diameter ratio (aspect ratio)
Was confirmed to be in the range of 2 to 20. One of the methods for producing such zonotolite is as follows.
石灰質原料としては、生石灰、消石灰あるいは生石灰粉
末を水中にて消化した石灰乳を使用する。珪酸質原料と
しては珪石粉末を用いるが、その場合の粉末度は250メ
ッシュ水フルイ残分５〜15％の範囲とする。珪石の粉末
度が５〜15％の範囲から外れる場合や非晶質の珪酸質原
料を使用すると目的の珪酸カルシウム結晶は得られな
い。次に、これらの原料を水と混合するが、その際の水
／固体重量比は10以上とする必要がある。この比率があ
まり大になると加熱に要する熱源単位が上がるので通常
10〜25の範囲で反応させるのがよい。反応圧力、温度、
反応時間については公知のゾノトライト系珪酸カルシウ
ムの合成条件と異るものでなく、例えば圧力14.5kg/c
m2、温度200℃の飽和水蒸気圧下６時間以上、撹拌しな
がら反応させることにより所望の製品を得ることが出来
る。このようにして得られた反応生成物は、スラリー状
態のまま水中に分散してもよいし脱水して含水ケーキ状
にして、その後これを水中に分散して使用してもよい。As the calcareous raw material, quicklime, slaked lime, or lime milk obtained by digesting quicklime powder in water is used. Silica powder is used as the siliceous raw material, and the fineness in that case is in the range of 5 to 15% of 250 mesh water sieve residue. If the fineness of silica stone is out of the range of 5 to 15% or if an amorphous siliceous raw material is used, the desired calcium silicate crystals cannot be obtained. Next, these raw materials are mixed with water, and the water / solid weight ratio at that time must be 10 or more. If this ratio becomes too large, the heat source unit required for heating increases, so
It is recommended to react in the range of 10 to 25. Reaction pressure, temperature,
The reaction time does not differ from the known conditions for synthesizing zonotolite-based calcium silicate, for example, pressure 14.5 kg / c
The desired product can be obtained by reacting for 6 hours or more under a saturated steam pressure of m 2 at a temperature of 200 ° C. while stirring. The reaction product thus obtained may be dispersed in water as it is in a slurry state, or may be dehydrated to form a water-containing cake and then dispersed in water for use.
また発明者らは、水熱合成により得られるゾノトライト
を主成分とする珪酸カルシウムを一たん乾燥したのち乾
式または湿式で解砕した珪酸カルシウムは、その解砕前
のもとの結晶形状を特に定めなくても、いずれも沈降体
積が300ml以下であることを見い出した。Further, the inventors have found that calcium silicate obtained by hydrothermally synthesizing calcium silicate containing xonotlite as a main component and then crushing it by a dry method or a wet method particularly determines the original crystal shape before the crushing. Even without them, they were found to have a sedimentation volume of 300 ml or less.
即ち、常法によって得られた沈降体積が300ml以上のゾ
ノトライトを主成分とする珪酸カルシウムを、付着水分
が例えば0.5％以下になるまで乾燥し、これを通常の衝
撃式粉砕機で解砕し、これによってマリモ状、麦穂状な
ど各種の結晶形態をした凝集体をほぐすようにする。こ
れによって、従来は濾水性がわるく抄造に極めて不滴で
あったものが、良好な濾水性のものに改良される。この
ような解砕は、常法によって得られた沈降体積が300ml
以上のゾノトライトを主成分とする珪酸カルシウムのみ
ならず、本願の第１の発明である沈降体積が300ml以下
であるゾノトライトを対象として行ってももちろんよ
く、そうした場合はその濾水性はさらによく、抄造性は
一段と向上する。That is, the sedimentation volume obtained by a conventional method is calcium silicate mainly composed of xonotlite having a volume of 300 ml or more, and the attached water is dried until the content becomes, for example, 0.5% or less, and this is crushed with an ordinary impact crusher, As a result, aggregates having various crystal forms such as marimo and wheat spikes are loosened. As a result, what has conventionally been poorly drained and was extremely drip-free in papermaking is improved to have good drainage. This kind of disintegration has a sedimentation volume of 300 ml obtained by the usual method.
Not only the above-mentioned calcium silicate containing xonotlite as a main component, but also zonotlite having a sedimentation volume of 300 ml or less, which is the first invention of the present application, may of course be used. Sex is further improved.
以下に、実施例をあげてこの発明をさらに説明する。The present invention will be further described below with reference to examples.
実施例1. 珪酸質原料として250メッシュフルイ残分8.0％の珪砂4
5.3重量部、石灰質原料として生石灰54.7重量部、水170
0重量部を混合してスラリーとした。これを内容積10m3
の撹拌機付きオートクレーブに送入し、温度200℃、圧
力14.5kg/cm2の飽和水蒸気圧下で撹拌しながら８時間水
熱合成を行った。この反応生成物は、Ｘ線回析分析結果
によりゾノトライトを主成分とする珪酸カルシウムであ
ることが確認された。この生成物を走査型電子顕微鏡
（SEM）下で観察したところ微細結晶の集合体であり、
単一の結晶径（Ｄ）は0.2〜0.8μｍ、長さ（Ｌ）は0.5
〜10μｍの円柱状結晶であった。アスペクト比（L/D）
は２〜15の範囲にあった。この実施例により得られたス
ラリー状珪酸カルシウム結晶をＡとして、そのSEM写真
を第１図に示す。なお、第２図，第３図には従来から広
く使用されているゾノトライトの針状結晶の凝集体を主
成分とした珪酸カルシウムのSEM写真であって、第２図
は毬藻状（Ｂ）、第３図は麦穂状（Ｃ）のものを示す。
これらを走査型電子顕微鏡で観察した結果によれば、結
晶径はおよそ0.05〜0.5μｍ、長さおよそ１〜20μｍの
範囲にある。Example 1. Silica sand as a siliceous material, 250 mesh sieve, silica sand with 8.0% residue 4
5.3 parts by weight, 54.7 parts by weight quicklime as calcareous raw material, 170 water
0 part by weight was mixed to form a slurry. This has an internal volume of 10 m 3.
Was fed into the autoclave with a stirrer, and hydrothermal synthesis was carried out for 8 hours while stirring at a temperature of 200 ° C. and a saturated steam pressure of 14.5 kg / cm 2 . The result of X-ray diffraction analysis confirmed that this reaction product was calcium silicate containing xonotlite as a main component. When this product was observed under a scanning electron microscope (SEM), it was an aggregate of fine crystals,
Single crystal diameter (D) is 0.2-0.8μm, length (L) is 0.5
It was a columnar crystal having a size of ˜10 μm. Aspect ratio (L / D)
Was in the range of 2-15. The SEM photograph of the slurry calcium silicate crystals obtained by this example is shown as A in FIG. 2 and 3 are SEM photographs of calcium silicate mainly composed of aggregates of zonotolite needle crystals that have been widely used in the past, and FIG. 2 shows diatomaceous (B), FIG. 3 shows a barley-shaped product (C).
According to the result of observing these with a scanning electron microscope, the crystal diameter is in the range of about 0.05 to 0.5 μm and the length is in the range of about 1 to 20 μm.
上記の珪酸カルシウムＡ、ＢおよびＣをスラリー状態の
ままその沈降体積を測定した。また、Ａ、ＢおよびＣを
105℃のオーブンにて付着水分を0.5％以下になるまで乾
燥した後奈良式自由粉砕機、型式Ｍ−６にて解砕して結
晶の凝集体をほぐし、これらの各珪酸カルシウムを
Ａ′,B′およびＣ′として、同様の方法で沈降体積を測
定した。なお，ここでの沈降体積の測定は，高速卓上ミ
キサー（型式ワーリングブレンダー7010,モデル31BL91,
米国ダイナミックコーポレーション社製、360W,回転数1
4700r.p.m）で撹拌し、その後これを既述のようにして
測定した。結果を第１表に示す。The settling volume of the above calcium silicates A, B and C was measured in a slurry state. Also, A, B and C
After drying in an oven at 105 ° C until the attached water content becomes 0.5% or less, it is crushed by a Nara type free crusher, model M-6 to loosen the crystal aggregates, and each of these calcium silicates is A ', Settling volumes were measured in the same manner as B'and C '. In addition, the measurement of the sedimentation volume here is performed by a high-speed desktop mixer (model Waring blender 7010, model 31BL91,
Made by US Dynamic Corporation, 360W, 1 rpm
Stirred at 4700 rpm and then measured as described above. The results are shown in Table 1.
上記珪酸カルシウムＡ、Ｂ、Ｃ、Ａ′、Ｂ′およびＣ′
の６種を用いて珪酸カルシウム50重量部、水酸化アルミ
ニウム（昭和アルミニウム株式会社製ハイジライトＨ−
31）25重量部、カット長3mmのガラス繊維５重量部、パ
ルプ（NBKP,カナダ標準フリーネスで250ml）及び凝集剤
を原料として長網式抄紙機にて抄紙を行ったところ、珪
酸カルシウムＡ、Ａ′、Ｂ′およびＣ′を使用したもの
はも所定の不燃無機質紙を得ることができたが、Ｂおよ
びＣを用いたものはいづれも濾水性がわるいためシート
の湿時強度が弱く、ドライヤーパートでシートが切断し
て目的の製品を得ることができなかった。なお、第４図
は上記のＢ′のもので、第２図に示したマリモ状のゾノ
トライト（Ｂ）の凝集体を解砕したもののSEM写真であ
る。 The calcium silicates A, B, C, A ', B'and C'
50 parts by weight of calcium silicate, aluminum hydroxide (Showa Aluminum Co., Ltd., Hijilite H-
31) 25 parts by weight, 5 parts by weight of a glass fiber having a cut length of 3 mm, pulp (NBKP, Canadian standard freeness 250 ml) and a flocculant were used as raw materials for papermaking with a Fourdrinier paper machine. The ones using ', B'and C'can obtain a predetermined non-combustible inorganic paper, but the ones using B and C all have poor drainage properties, so that the sheet has weak wet strength and a dryer. The sheet was cut in the part and the target product could not be obtained. Incidentally, FIG. 4 is a SEM photograph of the above-mentioned B ', which is obtained by crushing the agglomerates of the marimo-shaped xonotlite (B) shown in FIG.
実施例2. 珪酸質原料として下記第２表に示す原料を用いた。Example 2. The raw materials shown in Table 2 below were used as siliceous raw materials.
上記の中、シリカ１についてはボールミルで粉砕し、水
フルイ残分で17.0％,14.4％,10.5％,8.2％,5.7％,2.8％
に粒度調整し、いづれも珪酸質原料として使用に供し
た。石灰質原料としては、生石灰粉末を水中に撹拌しな
がら消化させた石灰乳を使用した。上記石灰質原料と珪
酸質原料とをCaO/SiO2モル比で0.95になるよう配合し、
上記原料に対して重量比率で15倍の水を加えてスラリー
とした。該スラリーを内容積20lのオートクレーブ中に1
2l入れ、撹拌しながら温度200℃、圧力14.5kg/cm2まで
昇温し、ゾノトライトを主成分とする珪酸カルシウムに
なるまで反応させた。ここに得られた珪酸カルシウム
を、実施例１と同様な方法で沈降体積を測定した。 Of the above, Silica 1 was crushed with a ball mill and the residual water residue was 17.0%, 14.4%, 10.5%, 8.2%, 5.7%, 2.8%
The particle size was adjusted and each was used as a siliceous raw material. As the calcareous raw material, lime milk obtained by digesting quicklime powder in water while stirring was used. The above calcareous raw material and siliceous raw material are blended so that the CaO / SiO 2 molar ratio is 0.95,
Water was added to the above raw material in a weight ratio of 15 times to form a slurry. 1 of the slurry in an autoclave with an internal volume of 20 l
2 liters were added, the temperature was raised to 200 ° C. and the pressure was 14.5 kg / cm 2 with stirring, and the reaction was continued until calcium silicate containing xonotlite as a main component was formed. The calcium silicate obtained here was measured for sedimentation volume in the same manner as in Example 1.
第３表に示す珪酸カルシウムを用いて実施例１と同様な
方法で長網式抄紙機にて抄紙を行ったところ、沈降体積
が300ml以下のNo.4,5,6,7のものはいづれも所定の不燃
性無機質紙を得ることができたが、その他のNo.1,2,3,
8,9,10はいづれも濾水がわるいためシートの湿時強度が
弱く、ドライヤーパートでシートが切断して目的の製品
を得ることができなかった。 When calcium silicate shown in Table 3 was used to carry out papermaking with a Fourdrinier paper machine in the same manner as in Example 1, any of Nos. 4, 5, 6, and 7 having a sedimentation volume of 300 ml or less was found. Was able to obtain the prescribed non-combustible inorganic paper, but other No.1,2,3,
Since the sheets of 8, 9 and 10 all had poor drainage, the strength of the sheet when wet was weak, and the sheet was cut by the dryer part, and the target product could not be obtained.
（発明の効果） 以上の本発明によるゾノトライトを主成分とする珪酸カ
ルシウムは、必要に応じ有機または無機の繊維、その他
の添加剤とともに水中に分散混合し、常法によって長網
または丸網式抄造機で抄造することができ、能率的にシ
ート状成形体を得ることができる。こうした珪酸カルシ
ウム成形体は、壁材、床材の裏打材、断熱フオームの表
面材等の内装用部材をはじめ、建築用ボード、耐熱被覆
材、不燃紙など幅広い用途が期待される。(Effects of the Invention) The calcium silicate containing xonotlite according to the present invention as the main component is dispersed and mixed in water together with organic or inorganic fibers and other additives as required, and the fourdrinier or round-net papermaking is performed by a conventional method. Papermaking can be performed with a machine, and a sheet-shaped molded product can be efficiently obtained. Such calcium silicate compacts are expected to have a wide range of uses such as interior materials such as wall materials, lining materials for floor materials, and surface materials for heat insulating foam, construction boards, heat-resistant coating materials, and non-combustible paper.
図はいづれも珪酸カルシウム結晶の走査型電子顕微鏡
（SEM）写真で、第１図はこの発明になるこの珪酸カル
シウムの沈降体積が230mlのものの10,000倍の結晶の写
真、第２図は従来から公知な珪酸カルシウム結晶で、そ
の沈降体積が460mlのものの1,500倍の結晶の写真、第３
図は従来から公知な珪酸カルシウム結晶で、その沈降体
積が380mlのものの1,500倍の結晶の写真、第４図はこの
発明になるもので、第２図に示したゾノトライト結晶の
凝集体を解砕したものの2,500倍の結晶の写真である。Each of the figures is a scanning electron microscope (SEM) photograph of a calcium silicate crystal, and FIG. 1 is a photograph of a crystal of the present invention which has a sedimentation volume of 230 ml and is 10,000 times as large as that of a crystal having a sedimentation volume of 230 ml. Calcium silicate crystals with a sedimentation volume of 460 ml, which is 1,500 times as large as crystals, No. 3
The figure is a photograph of a conventionally known calcium silicate crystal, which has a sedimentation volume of 380 ml and is 1,500 times as large as the crystal, and FIG. 4 is the present invention. The zonotolite crystal aggregates shown in FIG. 2 are disintegrated. It is a photograph of the crystal of 2,500 times that of the one that was made.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 三戸 章正 大分県大分市長浜町１―11―２ (72)発明者 安東 義明 大分県大分市大字高瀬1098番地 (56)参考文献 特開 昭61−77619（ＪＰ，Ａ) 特開 昭59−146969（ＪＰ，Ａ) 特開 昭59−169923（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shozo Mito 1-1-11-2, Nagahama-cho, Oita-shi, Oita (72) Inventor Yoshiaki Ando 1098 Takase, Oita-shi, Oita (56) References JP-A-61- 77619 (JP, A) JP 59-146969 (JP, A) JP 59-169923 (JP, A)
Claims (5)
300ml以下であるゾノトライトを主成分とする珪酸カル
シウム。1. The sedimentation volume when disaggregated and decomposed in water is
Calcium silicate whose main component is xonotlite, which is 300 ml or less.
1.0μｍでかつ結晶の長さ／径の比が２〜20の範囲にあ
る特許請求の範囲第１項記載の珪酸カルシウム。2. A single crystal is columnar and has a crystal diameter of 0.1-.
The calcium silicate according to claim 1, which has a crystal length / diameter ratio of 2 to 20 and is 1.0 μm.
成分とする珪酸カルシウムの製造にあたり、石灰原料と
250メッシュ水フルイ残分が５〜15％の珪石粉末に水を
加えて水／固体重量比を10以上とし、これを水熱合成す
ることを特徴とする珪酸カルシウムの製造方法。3. A lime raw material for the production of calcium silicate containing xonotlite having a sedimentation volume of 300 ml or less as a main component.
A method for producing calcium silicate, which comprises adding water to a silica stone powder having a residual amount of 250 mesh water sieve of 5 to 15% to obtain a water / solid weight ratio of 10 or more and hydrothermally synthesizing this.
成分とする珪酸カルシウムの製造にあたり、常法による
水熱合成によって得られたゾノトライトを主成分とする
珪酸カルシウムを乾燥後解砕することを特徴とする珪酸
カルシウムの製造方法。4. A method for producing calcium silicate containing xonotlite as a main component having a sedimentation volume of 300 ml or less, characterized in that calcium silicate containing zonotlite as a main component obtained by hydrothermal synthesis by a conventional method is dried and then crushed. And a method for producing calcium silicate.
1.0μｍでかつ結晶の長さ／径の比が２〜20の範囲にあ
って、これを水中に離解、分散させたときの沈降体積が
300ml以下であるゾノトライトを主成分とする珪酸カル
シウムを、乾燥後解砕することを特徴とする珪酸カルシ
ウムの製造方法。5. The single crystal is columnar and has a crystal diameter of 0.1 to
The length of the crystal is 1.0 μm and the ratio of length / diameter is in the range of 2 to 20, and the sedimentation volume when disintegrated and dispersed in water is
A process for producing calcium silicate, which comprises crushing after drying calcium silicate containing 300 ml or less of xonotlite as a main component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62278662A JPH0710722B2 (en) | 1987-11-04 | 1987-11-04 | Calcium silicate and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62278662A JPH0710722B2 (en) | 1987-11-04 | 1987-11-04 | Calcium silicate and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01122917A JPH01122917A (en) | 1989-05-16 |
| JPH0710722B2 true JPH0710722B2 (en) | 1995-02-08 |
Family
ID=17600409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62278662A Expired - Fee Related JPH0710722B2 (en) | 1987-11-04 | 1987-11-04 | Calcium silicate and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0710722B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2119431A1 (en) | 2008-03-28 | 2009-11-18 | L'Oréal | Composition containing the combination of madecassoside and/or of terminoloside and of an arginine and/or a salt thereof and/or a derivative thereof; use of the combination for inducing and/or stimulating the growth of human keratin fibres and/or preventing their loss |
| EP2119475A1 (en) | 2008-03-28 | 2009-11-18 | L'Oréal | Composition containing the combination of 2,4 diaminopyrimidine-3-n-oxide and of madecassoside and/or of terminoloside; use of the combination for inducing and/or stimulating the growth of human keratin fibres and/or preventing their loss. |
| CN102690314A (en) * | 2011-03-22 | 2012-09-26 | 上海医药工业研究院 | Amorphous asiatic acid tromethamine salt and its preparation method |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05239795A (en) * | 1991-03-15 | 1993-09-17 | Kochi Pref Gov | Incombustible paper consisting essentially of calcium silicate dispersed in single fiber state and its production |
| FR2904240B1 (en) * | 2006-07-26 | 2008-12-05 | Air Liquide | TRAPPING STRUCTURE FOR GAS CONTAINER WITH CRYSTALLIZED MATERIAL IN THE FORM OF NEEDLES |
| FR2904239B1 (en) | 2006-07-26 | 2008-12-05 | Air Liquide | CRYSTALLINE PHASE STRAPPING STRUCTURE OF GAS CONTAINERS |
| FR2933396B1 (en) | 2008-07-02 | 2011-07-22 | Air Liquide | PROCESS FOR MANUFACTURING A TRAPPING STRUCTURE WITH CONTROL OF THE DRYING STEP |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59146969A (en) * | 1983-02-07 | 1984-08-23 | 工業技術院長 | Carbon-containing calcium silicate formed body and manufacture |
| JPS59169923A (en) * | 1983-03-16 | 1984-09-26 | Aoki Masayoshi | Xonotlite-type calcium silicate and its preparation |
| JPS6177619A (en) * | 1984-09-25 | 1986-04-21 | Asahi Glass Co Ltd | Hydrate of calcium silicate |
-
1987
- 1987-11-04 JP JP62278662A patent/JPH0710722B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2119431A1 (en) | 2008-03-28 | 2009-11-18 | L'Oréal | Composition containing the combination of madecassoside and/or of terminoloside and of an arginine and/or a salt thereof and/or a derivative thereof; use of the combination for inducing and/or stimulating the growth of human keratin fibres and/or preventing their loss |
| EP2119475A1 (en) | 2008-03-28 | 2009-11-18 | L'Oréal | Composition containing the combination of 2,4 diaminopyrimidine-3-n-oxide and of madecassoside and/or of terminoloside; use of the combination for inducing and/or stimulating the growth of human keratin fibres and/or preventing their loss. |
| CN102690314A (en) * | 2011-03-22 | 2012-09-26 | 上海医药工业研究院 | Amorphous asiatic acid tromethamine salt and its preparation method |
| CN102690314B (en) * | 2011-03-22 | 2015-06-10 | 上海医药工业研究院 | Amorphous asiatic acid tromethamine salt and its preparation method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01122917A (en) | 1989-05-16 |
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