JPS63260815A - Production of calcium carbonate having aragonite crystal form - Google Patents
Production of calcium carbonate having aragonite crystal formInfo
- Publication number
- JPS63260815A JPS63260815A JP9421887A JP9421887A JPS63260815A JP S63260815 A JPS63260815 A JP S63260815A JP 9421887 A JP9421887 A JP 9421887A JP 9421887 A JP9421887 A JP 9421887A JP S63260815 A JPS63260815 A JP S63260815A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- calcium carbonate
- aragonite
- additive
- water slurry
- 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.)
- Pending
Links
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 title claims abstract description 52
- 229910000019 calcium carbonate Inorganic materials 0.000 title claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 239000013078 crystal Substances 0.000 title abstract description 4
- 239000002002 slurry Substances 0.000 claims abstract description 25
- 239000000654 additive Substances 0.000 claims abstract description 11
- 230000000996 additive effect Effects 0.000 claims abstract description 8
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 4
- 150000001553 barium compounds Chemical class 0.000 claims abstract description 4
- 238000007664 blowing Methods 0.000 claims abstract description 4
- 150000003438 strontium compounds Chemical class 0.000 claims abstract description 4
- 239000011575 calcium Substances 0.000 claims description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 8
- 150000003016 phosphoric acids Chemical class 0.000 claims description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 abstract description 6
- 239000000920 calcium hydroxide Substances 0.000 abstract description 6
- 229910001861 calcium hydroxide Inorganic materials 0.000 abstract description 6
- 238000009776 industrial production Methods 0.000 abstract description 4
- 235000011116 calcium hydroxide Nutrition 0.000 abstract 5
- -1 phosphoric acid compound Chemical class 0.000 abstract 1
- 229910021532 Calcite Inorganic materials 0.000 description 11
- 239000002245 particle Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 239000000945 filler Substances 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000000049 pigment Substances 0.000 description 4
- 235000019738 Limestone Nutrition 0.000 description 3
- 239000003086 colorant Substances 0.000 description 3
- 239000006028 limestone Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003484 crystal nucleating agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は、アラゴナイト結晶形炭酸カルシウム（以下、
アラゴナイトと略す）の製造法に関するものである。Detailed Description of the Invention "Field of Industrial Application" The present invention is directed to aragonite crystalline calcium carbonate (hereinafter referred to as
This article relates to a method for producing aragonite (abbreviated as aragonite).
炭酸カルシウムは古くからゴム、プラスチック、塗料、
シーリング材、製紙等の分野で工業用原材料として広く
使用され、それぞれ優れた機能を発揮している０例えば
ゴム分野では補強性、塗料分シウムは、結晶形から分類
すれば殆ど全てカルサイト結晶形炭酸カルシウム（以下
、カルサイトと略す）である、アラゴナイトは製紙の分
野で一部使用されており、例えばコーティングカラーの
顔料、薄紙のてん料等である。アラゴナイトはカルサイ
トに比べて各分野で優れた物性を発揮し、又、今後一層
その用途開発が期待されている。従って、アラゴナイト
の効率的な工業的生産方法の確立が待望されているのが
現状である。Calcium carbonate has long been used in rubber, plastics, paints,
It is widely used as an industrial raw material in fields such as sealants and paper manufacturing, and each exhibits excellent functions.For example, in the rubber field, reinforcing properties and paint content are almost all calcite crystals. Aragonite, which is calcium carbonate (hereinafter abbreviated as calcite), is used in some areas of paper manufacturing, such as as a pigment for coating colors and filler for thin paper. Aragonite exhibits superior physical properties in various fields compared to calcite, and further development of its applications is expected in the future. Therefore, it is currently desired to establish an efficient industrial production method for aragonite.
「従来技術と問題点」
アラゴナイトはカルサイトに比べて粒子の分散性が優れ
ている。又、カルサイトにはない柱状というＣｒｙｓｔ
ａｌ ｈａｂｂｉｔは、カルサイトでは出ない色々の特
性を発揮する。従って、従来から工業的にアラゴナイト
をより効率的に生産することが試みられて来た０例えば
、Ｃａ （Ｏ）Ｉ） ｔスラリーとＣＯ，ガスとの気液
反応に関する技術としては、炭酸化工程でＣ（ｈガス量
を各段階で調整して行う方法（特公昭５５ ５１８５２
） 、Ｃａ（ＯＨ）ｚスラリーにあらかじめ結晶核形成
剤を加える方法（特開昭５９−２２３２２５）等がある
。"Prior art and problems" Aragonite has better particle dispersibility than calcite. Also, Cryst has a columnar shape that is not found in Calcite.
Al habitat exhibits various properties that calcite does not exhibit. Therefore, attempts have been made to industrially produce aragonite more efficiently.For example, as a technology related to the gas-liquid reaction between Ca (O) I) t slurry and CO gas, carbonation process C (method performed by adjusting the amount of gas at each stage (Special Publication No. 55 51852)
), a method of adding a crystal nucleating agent to Ca(OH)z slurry in advance (Japanese Patent Application Laid-Open No. 59-223225), etc.
しかし乍ら、これらの方法は工業的に生産する上におい
て、多くの問題点を含んでいる。However, these methods involve many problems in industrial production.
まず第１点は、上記の両発明に共通していえることは、
原料として用いるＣａ （ＯＨ） ｚの種類が挙げられ
る。 Ｃａ（ＯＨ）ｘはその製造方法によってＣＯ３と
の反応性が異なる９例えば、石灰石を高温で短時間のう
ちに焼成してＣａＯとＣＯ！に分解し、このＣａＯに過
剰の水を加えて生成させたＣａ （ＯＲ） ＊はＣｏｔ
との反応性が乏しい。一方、出来るだけ低温で、長時間
かけて石灰石を分解したＣａＯに少量ずつ水を添加して
生成させたＣａ （ＯＨ） ｚはＣｏｔとの反応性がよ
い、アラゴナイトの生成に関しては、前者より後者を使
用した方がはるかに生成しやすい。しかし工業的には前
者のＣａ（ＯＨ）ｚの方が製造しやすく、コスト的にも
安い、前述の２つの方法にあっては、前者のＣａ （Ｏ
Ｈ） ＊を使用したのでは少量しか、又は全くアラゴナ
イトを生成させることが出来ない。Firstly, what both of the above inventions have in common is that
Examples include types of Ca (OH) z used as a raw material. Ca (OH) Ca (OR) * produced by adding excess water to this CaO is Cot
poor reactivity with On the other hand, Ca (OH) z, which is produced by adding water little by little to CaO obtained by decomposing limestone over a long period of time at as low a temperature as possible, has good reactivity with Cot, and the latter is more reactive than the former in terms of aragonite production. It is much easier to generate using . However, industrially, the former Ca(OH)z is easier to produce and is cheaper in terms of cost.
H) If * is used, only a small amount or no aragonite can be produced.
第２点は、特公昭５５−５１８５２に記載の方法では、
工業的に生産する場合、各段階でＣｏｔガス量を変える
ことは操作面で非常に煩雑となるばかりでなく、設備面
でもコストアップとなるのを避けられない、また、特開
昭５９−２２３２２５の方法においても、本発明者らの
追試によれば、各段階でＣＯ３ガス量を変えなければア
ラゴナイトを生成させることが出来ないか、又は出来た
としても低含有率である。従って、工業的に商業ベース
で生産することが困難である。The second point is that in the method described in Japanese Patent Publication No. 55-51852,
In the case of industrial production, changing the amount of Cot gas at each stage not only becomes very complicated in terms of operation, but also increases costs in terms of equipment. According to additional tests conducted by the present inventors, even in the method described above, aragonite cannot be produced unless the amount of CO3 gas is changed at each stage, or even if aragonite can be produced, the content is low. Therefore, it is difficult to produce it industrially on a commercial basis.
ｒ問題点を解決するための手段」
本発明者らは上記実情に鑑み鋭意研究の結果、前述のよ
うな従来技術が直面する問題点を一挙に解決することに
成功し、本発明を完成した。In view of the above-mentioned circumstances, the present inventors have conducted extensive research, and as a result have succeeded in solving all the problems faced by the prior art as described above, and have completed the present invention. .
即ち、本発明はＣａ （ＯＲ） ！の水スラリーにＣＯ
，ガスを吹き込んで炭酸カルシウムを生成させるに際し
、Ｃａ （ＯＨ） ＊の水スラリー濃度を５〜４０ｗｔ
χ、温度を５〜６５℃に調整し、Ｃａ （ＯＨ） ｔの
水スラリー中に添加剤を加えて、ＣＯ，ガス（■００％
ＣＯ。That is, the present invention provides Ca(OR)! CO in the water slurry of
, When blowing gas to generate calcium carbonate, the concentration of Ca (OH) * water slurry is 5 to 40 wt.
χ, temperature was adjusted to 5-65 °C, additives were added into the water slurry of Ca(OH)t, CO, gas (■00%
C.O.
とじて）を４１ ／ｓ＋ｉｎ ／ ｋｇ −Ｃａ（ＯＨ
） を以下の量で炭酸化させることによってアラゴナイ
ト結晶形炭酸カルシウムを生成させることを特徴とする
アラゴナイト結晶形炭酸カルシウムの製造法を内容とす
るものであ。41 /s+in/kg -Ca(OH
) in the following amounts to produce aragonite crystalline calcium carbonate.
本発明で使用するＣａ （ＯＲ） ｚの水スラリー濃度
は５〜４０ｗｔχ、好ましくは８〜２０ｗｔχ程度が良
い、温度は５〜６５℃、好ましくは１５〜４５℃程度が
良い、Ｃ０８のガス量（ＣＯ！ガス１００％純度として
）は、４１ ／ｗｉｎ ／ｋｇ−Ｃａ（ＯＨ）を以下と
する必要があり１、より好ましくは２１ ／ｓｉｎ ／
ｋｇ−Ｃａ （０）１） を以下である。ＣＯ□のガス
濃度は好ましくは１０〜４０％、より好ましくは２０〜
３５％程度が良い。The water slurry concentration of Ca (OR) z used in the present invention is preferably about 5 to 40 wtχ, preferably about 8 to 20 wtχ, the temperature is about 5 to 65 °C, preferably about 15 to 45 °C, and the gas amount of C08 ( CO! gas (assuming 100% purity) must be less than 41 /win /kg-Ca(OH)1, more preferably 21 /sin /
kg-Ca (0)1) is as follows. The gas concentration of CO□ is preferably 10 to 40%, more preferably 20 to 40%.
About 35% is good.
本発明に用いられる添加剤としては、リン酸及びリン酸
化合物、バリウム化合物、ストロンチウム化合物等が挙
げられ、これらは単独又は２種以上混合して用いられる
。これらリン酸の塩としては、に５ＰＯａ 、にＬＰＯ
＊、ＫＪＰＯｎ、ＮａＪＰＯｓ ’１２ＨｚＯ１（Ｎ
Ｈ４）３ＰＯ，・３Ｈ章θ等が例示され、バリウム化合
物、ストロンチウム化合物としては炭酸塩、硫酸塩、水
酸化物等が例示される。添加剤の使用量は、水酸化カル
シウムに対して０．１％〜１０．Ｏｗｔχ、好ましくは
０．２％〜６．Ｏｗｔχ程度が良い。Ｑ、１ｗｔχ未満
ではアラゴナイトの生成純度が低い、一方、１０．０ｗ
ｔＸを越えても勿論アラゴナイトは生成するが、コスト
的に問題がある。こうしてできたアラゴナイトは長径０
．５〜１０．０ ｐ ｍ、短径０．０２〜１．０μｍ１
アスペクト比５以上の柱状もしくは針状形状をしている
０粒子の大小の調整については、Ｃａ （ＯＨ） １水
スラリーの温度が低く、添加剤の量が多い程粒子は小さ
くなり、Ｃａ（Ｏｆｆ）ｚ水スラリーの温度が高く、添
加剤の量が少ない程粒子が大きくなる。Examples of the additives used in the present invention include phosphoric acid and phosphoric acid compounds, barium compounds, and strontium compounds, which may be used alone or in combination of two or more. These phosphoric acid salts include 5POa, LPO
*, KJPOn, NaJPOs '12HzO1(N
Examples include H4) 3PO, .3H Chapter θ, and examples of barium compounds and strontium compounds include carbonates, sulfates, and hydroxides. The amount of additive used is 0.1% to 10% based on calcium hydroxide. Owtχ, preferably 0.2% to 6. Approximately Owtχ is good. When Q is less than 1wtχ, the purity of aragonite produced is low; on the other hand, when 10.0w
Of course, aragonite is produced even if the temperature exceeds tX, but there is a cost problem. The aragonite made in this way has a major axis of 0.
．． 5 to 10.0 p m, minor axis 0.02 to 1.0 μm1
Regarding the adjustment of the size of particles having a columnar or needle-like shape with an aspect ratio of 5 or more, the lower the temperature of the Ca (OH) 1 water slurry and the larger the amount of additive, the smaller the particles become. )z The higher the temperature of the water slurry and the lower the amount of additive, the larger the particles.
上記の如くして得られるアラゴナイトは各使用用途に応
じてスラリーでも、ペーストでも製品となる。スラリー
の場合は３〜３５％、ペーストの場合は４５〜６５％程
度の温度が好ましい。又、アラゴナイトスラリーを脱水
、乾燥して粉体として製品化しても良い。The aragonite obtained as described above can be made into a slurry or paste depending on the intended use. In the case of slurry, the temperature is preferably about 3 to 35%, and in the case of paste, the temperature is about 45 to 65%. Alternatively, the aragonite slurry may be dehydrated and dried to produce a product as a powder.
「作用・効果」
本発明のアラゴナイトは、従来カルサイトが使用されて
いた分野の中でも特に製紙、プラスチックの分野でその
特性を発揮する。製紙分野では、カルサイトに比ベアラ
ゴナイトは分散性が優れているため、紙の填料として又
コーティングカラーの顔料として使用した場合、優れた
隠ペイ性を発揮する。従って、従来隠ペイ性付与のため
に使用されていたＴｉＯ□が大幅に節減できる。又、コ
ーティングカラーの顔料としてカオリン等と併用使用し
た場合、従来からこの分野に使用されている立方体形状
のカルサイトに比べて、優れた印刷適性を示す、特に印
刷光沢、とッキングが良い、又、白紙光沢もカルサイト
より優れている。コーティングカラーに使用した場合の
これらの優れた物性は、アラゴナイトのＣｒｙｓｔａｌ
ｈａｂｂｉｔである柱状又は針状という方向性をもっ
た粒子形状に起因する。"Action/Effect" The aragonite of the present invention exhibits its properties particularly in the fields of paper manufacturing and plastics, among the fields where calcite has conventionally been used. In the paper manufacturing field, bearragonite has superior dispersibility compared to calcite, so when used as a filler in paper or as a pigment in coating colors, it exhibits excellent pay hiding properties. Therefore, the amount of TiO□, which was conventionally used for imparting concealment properties, can be significantly reduced. In addition, when used in combination with kaolin etc. as a coating color pigment, it exhibits superior printability compared to the cubic calcite conventionally used in this field, with particularly good print gloss and grip. , white paper gloss is also superior to calcite. These excellent physical properties when used in coating colors make Aragonite Crystal
This is due to the directional particle shape of a habitable columnar or acicular shape.
「実施例」
以下、本発明を実施例及び比較例を挙げて更に詳細に説
明するが、本発明はこれらにより何ら制限されるもので
はない。"Examples" Hereinafter, the present invention will be explained in more detail with reference to Examples and Comparative Examples, but the present invention is not limited by these in any way.
実施例１
石灰石を１４００℃で５時間焼成してＣａＯと００２に
分解させな。このＣａＯにＣａ （Ｏｆ（） を水スラ
リーの濃度が１３０ｇ／ｊ！なるように水の量を一度に
加えてＣａ （ＯＨ） ｚ水スラリーを生成させた。Example 1 Limestone was calcined at 1400°C for 5 hours to decompose it into CaO and 002. Ca (Of() ) was added to this CaO in an amount of water at once so that the concentration of the water slurry was 130 g/j! to generate a Ca (OH) z water slurry.
このＣａ （ＯＨ） ｚ水スラリーの濃度を１３０ ｇ
／ｊ！。The concentration of this Ca (OH) z water slurry was 130 g.
/j! .
温度を３５℃に調整したＣａ （ＯＲ） ｚ水スラリー
３０ｉにＣｏｗ濃度３０％である空気とＣｏｔ混合ガス
を１０１ ／ｓｉｎ ／ ｋｇ ・Ｃａ（ＯＨ）ｚの割
合で吹き入れてＣａ （ＯＨ） ｚを炭酸化した。この
場合Ｃａ （ＯＨ） ｚ水スラリーにあらかじめ５ｒＣ
（ｈをＩ ＬＴ ｇ （Ｃａ（ＯＨ）ｘに対して３．Ｑ
ｗｔχ）添加した。こうして出来た炭酸カルシウムをＸ
線でアラゴナイト含有量を、又、電子顕微鏡で粒子形状
を観察した。結果を第１表に示す。A mixed gas of air and Cot with a Cow concentration of 30% was blown into Ca (OR) z water slurry 30i whose temperature was adjusted to 35°C at a rate of 101/sin/kg ・Ca (OH) z to produce Ca (OH) z. was carbonated. In this case, the Ca(OH)z water slurry was preheated to 5rC.
(h to I LT g (3.Q for Ca(OH)x
wtχ) was added. The calcium carbonate thus produced is
The aragonite content was observed using a wire, and the particle shape was observed using an electron microscope. The results are shown in Table 1.
実施例２
実施例１において、添加剤として５ｒＣＯｓの代わりに
ＢａＣ１ｚを使用する以外は全て実施例１と同様に操作
した。Example 2 All operations were carried out in the same manner as in Example 1 except that BaClz was used instead of 5rCOs as an additive.
実施例３
実施例１において、空気とＣＯ１混合ガス量を６ｊ ／
ｍｉｎ ／ ｋｇ ・Ｃａ（ＯＨ）ｚに変更する以外は
全て実施例１と同様に操作した。Example 3 In Example 1, the amount of air and CO1 mixed gas was set to 6j/
All operations were performed in the same manner as in Example 1 except for changing to min/kg ·Ca(OH)z.
比較例１
実施例１において、空気とＣＯ８混合ガス量を１００１
／ｗｉｎ ／ ｋｇ−Ｃａ（ＯＨ） ｔに変更する以
外は全て実施例１と同様に操作した。Comparative Example 1 In Example 1, the amount of air and CO8 mixed gas was 1001
All operations were performed in the same manner as in Example 1 except for changing to /win/kg-Ca(OH)t.
比較例２
実施例１において、空気とＣＯ１混合ガス量を３０１
／ａ＋ｉｎ ／ ｋｇ−Ｃａ（Ｏｌｌ）ｔに変更する以
外は全て実施例１と同様に操作した。Comparative Example 2 In Example 1, the amount of air and CO1 mixed gas was 301
All operations were performed in the same manner as in Example 1 except for changing to /a+in/kg-Ca(Oll)t.
比較例３
石灰石を９００℃で２４時間焼成してＣａＯと００２に
分解させた。このＣａＯに噴霧状態で水を加え徐々にＣ
ａ （ＯＨ） ｘを生成させた。こうして生成したＣａ
（Ｏｆ（） ｔをム幼＃Ｆ孝１３０ ｇ ／ ’の水
スラリーに調整した。Comparative Example 3 Limestone was calcined at 900° C. for 24 hours to decompose it into CaO and 002. Add water to this CaO in a spray state and gradually
a (OH) x was produced. Ca generated in this way
(Of()t was adjusted to 130 g/' water slurry.
このＣａ （ＯＨ） ｚ水スラリーに空気とＣＯ３混合
ガスを１００ ｊ ／ｓ＋ｉｎ ／ ｋＪｒ−Ｃａ（Ｏ
Ｈ）ｔの割合で吹き込んだ、その他は全て実施例１と同
様に操作した。Add air and CO3 mixed gas to this Ca(OH)z water slurry at 100 j/s+in/kJr-Ca(O
H) All other operations were carried out in the same manner as in Example 1, except that the air was blown at a ratio of t.
第 １ 表
上記の結果かられかるように、本発明の実施例１乃至実
施例３は高純度にアラゴナイトを生成するが、比較例１
〜３は全くアラゴナイトを生成しないか、生成しても含
有率が極めて低い。Table 1 As can be seen from the above results, Examples 1 to 3 of the present invention produce aragonite with high purity, but Comparative Example 1
-3 does not produce aragonite at all, or even if it does, the content is extremely low.
応用例
実施例１及び２で生成させたアラゴナイトを紙の填料と
して使用し、第２表に示した配合で抄紙試験を実施した
。尚、比較のために、従来の紡錘形カルサイトを用い同
様の試験を実施した。その結果を第３表に示す。Application Example A paper making test was carried out using the aragonite produced in Examples 1 and 2 as a paper filler with the formulations shown in Table 2. For comparison, a similar test was conducted using conventional spindle-shaped calcite. The results are shown in Table 3.
第 ２ 表
配合
（ａ）バルブ（Ｌ／Ｎ −７／３） １００部
（重量部）（ｂ） ＣａＣ０１６０部
（Ｃ）水 バルブ濃度２．５％（ｄ
）カチオンデンプン １部（ｅ）硫酸バ
ンド ０．５部（ｆ）サイズ剤（
バーサイズＡＭ−１８８） ０．２部（ｇ＞定着
剤（カイメン５５７１１） ０．０５部（ｈ
）歩留向上剤（ＮＲ−１１Ｌ）Ｉ） ０．
０２部Ｒ０：黒板反射率
１１ｏｏ！完全に不透明な紙束の反射率Ｗ：坪量
Ｓｓ −（１−１） ｌｆ
※２填料の比散乱係数Ｓｐ−□
Ｓｆ＋未充填紙の比散乱係数
ＳＩｌ：充填紙の比散乱係数
ｙ：充填量
第 ３ 表
以上の結果より、本発明品を紙の填料として使用すれば
、優れた白色度、不遇明度、紙Ｓ値、顔料Ｓ値が得られ
ることがわかる。Table 2 Mixture (a) Bulb (L/N -7/3) 100 parts (parts by weight) (b) CaC0 160 parts (C) Water Bulb concentration 2.5% (d
) Cationic starch 1 part (e) Sulfuric acid bandate 0.5 part (f) Sizing agent (
Bar size AM-188) 0.2 part (g>Fixer (Kaimen 55711) 0.05 part (h
) Retention aid (NR-11L) I) 0.
Part 02 R0: Blackboard reflectance 11oo! Reflectance W of completely opaque paper bundle: Basis weight Ss - (1-1) lf *2 Specific scattering coefficient of filler Sp - □ Sf + Specific scattering coefficient of unfilled paper SIl: Specific scattering coefficient of filled paper y: Filling Table 3 From the results shown above, it can be seen that when the product of the present invention is used as a paper filler, excellent whiteness, poor brightness, paper S value, and pigment S value can be obtained.
Claims (1)
き込んで炭酸カルシウムを生成させるに際し、Ｃａ（Ｏ
Ｈ）＿２の水スラリー濃度を５〜４０ｗｔ％、温度を５
〜６５℃に調整し、Ｃａ（ＯＨ）＿２の水スラリー中に
添加剤を加えて、ＣＯ＿２ガス（１００％ＣＯ＿２とし
て）を４ｌ／ｍｉｎ／ｋｇ・Ｃａ（ＯＨ）＿２以下の量
で炭酸化させることによってアラゴナイト結晶形炭酸カ
ルシウムを生成させることを特徴とするアラゴナイト結
晶形炭酸カルシウムの製造法。 ２、添加剤が、リン酸、リン酸化合物、バリウム化合物
及びストロンチウム化合物から選択される少なくとも１
種である特許請求の範囲第１項記載の製造法。 ３、ＣＯ＿２ガス（１００％ＣＯ＿２として）が２ｌ／
ｍｉｎ／ｋｇ・Ｃａ（ＯＨ）＿２以下の量である特許請
求の範囲第１項記載の製造法。[Claims] 1. When producing calcium carbonate by blowing CO_2 gas into a water slurry of Ca(OH)_2,
H)_2 water slurry concentration is 5 to 40 wt%, temperature is 5
Adjust the temperature to ~65℃, add additives to the water slurry of Ca(OH)_2, and carbonate CO_2 gas (as 100% CO_2) at a rate of 4 l/min/kg・Ca(OH)_2 or less. 1. A method for producing aragonite crystalline calcium carbonate, the method comprising: producing aragonite crystalline calcium carbonate. 2. The additive is at least one selected from phosphoric acid, phosphoric acid compounds, barium compounds, and strontium compounds.
The production method according to claim 1, which is a seed. 3. CO_2 gas (as 100% CO_2) is 2l/
The manufacturing method according to claim 1, wherein the amount is not more than min/kg·Ca(OH)_2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9421887A JPS63260815A (en) | 1987-04-16 | 1987-04-16 | Production of calcium carbonate having aragonite crystal form |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9421887A JPS63260815A (en) | 1987-04-16 | 1987-04-16 | Production of calcium carbonate having aragonite crystal form |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63260815A true JPS63260815A (en) | 1988-10-27 |
Family
ID=14104175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9421887A Pending JPS63260815A (en) | 1987-04-16 | 1987-04-16 | Production of calcium carbonate having aragonite crystal form |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63260815A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001049610A1 (en) * | 2000-01-06 | 2001-07-12 | Yabashi Industries Co., Ltd. | Process for producing spindle-shaped calcium carbonate |
| US6685908B1 (en) * | 2000-03-06 | 2004-02-03 | 3P Technologies Ltd. | Precipitated aragonite and a process for producing it |
| WO2011121065A1 (en) | 2010-04-01 | 2011-10-06 | Omya Development Ag | Process for obtaining precipitated calcium carbonate |
| CN102504617A (en) * | 2011-09-30 | 2012-06-20 | 广东轻工职业技术学院 | Kaolin composite material and preparation method thereof |
| EP2840065A1 (en) | 2013-08-20 | 2015-02-25 | Omya International AG | Process for obtaining precipitated calcium carbonate |
| CN110904505A (en) * | 2019-12-09 | 2020-03-24 | 黄石海纳新材料科技股份有限公司 | Preparation method of calcium carbonate whisker |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5836924A (en) * | 1981-08-28 | 1983-03-04 | Okutama Kogyo Kk | Growing method for crystal of aragonite type prismatic calcium carbonate |
| JPS5969425A (en) * | 1982-10-06 | 1984-04-19 | Maruo Calcium Kk | Manufacture of calcitic calcium carbonate |
| JPS59199731A (en) * | 1983-04-27 | 1984-11-12 | Maruo Calcium Kk | Preparation of linearly connected calcium carbonate having high dispersibility |
| JPS59223225A (en) * | 1983-05-27 | 1984-12-15 | Shiraishi Chuo Kenkyusho:Kk | Manufacture of calcium carbonate |
| JPS59232916A (en) * | 1983-06-16 | 1984-12-27 | Shiraishi Chuo Kenkyusho:Kk | United body of needlelike or columnar calcium carbonate, its manufacture and coating composition for heat sensitive paper containing said united body |
-
1987
- 1987-04-16 JP JP9421887A patent/JPS63260815A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5836924A (en) * | 1981-08-28 | 1983-03-04 | Okutama Kogyo Kk | Growing method for crystal of aragonite type prismatic calcium carbonate |
| JPS5969425A (en) * | 1982-10-06 | 1984-04-19 | Maruo Calcium Kk | Manufacture of calcitic calcium carbonate |
| JPS59199731A (en) * | 1983-04-27 | 1984-11-12 | Maruo Calcium Kk | Preparation of linearly connected calcium carbonate having high dispersibility |
| JPS59223225A (en) * | 1983-05-27 | 1984-12-15 | Shiraishi Chuo Kenkyusho:Kk | Manufacture of calcium carbonate |
| JPS59232916A (en) * | 1983-06-16 | 1984-12-27 | Shiraishi Chuo Kenkyusho:Kk | United body of needlelike or columnar calcium carbonate, its manufacture and coating composition for heat sensitive paper containing said united body |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001049610A1 (en) * | 2000-01-06 | 2001-07-12 | Yabashi Industries Co., Ltd. | Process for producing spindle-shaped calcium carbonate |
| US6685908B1 (en) * | 2000-03-06 | 2004-02-03 | 3P Technologies Ltd. | Precipitated aragonite and a process for producing it |
| WO2011121065A1 (en) | 2010-04-01 | 2011-10-06 | Omya Development Ag | Process for obtaining precipitated calcium carbonate |
| US8999284B2 (en) | 2010-04-01 | 2015-04-07 | Omya International Ag | Process for obtaining precipitated calcium carbonate |
| US9725329B2 (en) | 2010-04-01 | 2017-08-08 | Omya International Ag | Process for obtaining precipitated calcium carbonate |
| CN102504617A (en) * | 2011-09-30 | 2012-06-20 | 广东轻工职业技术学院 | Kaolin composite material and preparation method thereof |
| EP2840065A1 (en) | 2013-08-20 | 2015-02-25 | Omya International AG | Process for obtaining precipitated calcium carbonate |
| JP2016528156A (en) * | 2013-08-20 | 2016-09-15 | オムヤ インターナショナル アーゲー | Method for obtaining precipitated calcium carbonate |
| US9776884B2 (en) | 2013-08-20 | 2017-10-03 | Omya International Ag | Process for obtaining precipitated calcium carbonate |
| US10343929B2 (en) | 2013-08-20 | 2019-07-09 | Omya International Ag | Process for obtaining precipitated calcium carbonate |
| CN110904505A (en) * | 2019-12-09 | 2020-03-24 | 黄石海纳新材料科技股份有限公司 | Preparation method of calcium carbonate whisker |
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