JP2015516358A - 偏三角面体状の沈降炭酸カルシウムを調製するための方法 - Google Patents
偏三角面体状の沈降炭酸カルシウムを調製するための方法 Download PDFInfo
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- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 title claims abstract description 165
- 229940088417 precipitated calcium carbonate Drugs 0.000 title claims abstract description 111
- 238000000034 method Methods 0.000 title claims abstract description 40
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 38
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 37
- 235000011116 calcium hydroxide Nutrition 0.000 claims abstract description 37
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 36
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 18
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Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/18—Carbonates
- C01F11/181—Preparation of calcium carbonate by carbonation of aqueous solutions and characterised by control of the carbonation conditions
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/18—Carbonates
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/675—Oxides, hydroxides or carbonates
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/38—Coatings with pigments characterised by the pigments
- D21H19/385—Oxides, hydroxides or carbonates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/03—Particle morphology depicted by an image obtained by SEM
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/30—Particle morphology extending in three dimensions
- C01P2004/39—Particle morphology extending in three dimensions parallelepiped-like
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/51—Particles with a specific particle size distribution
- C01P2004/52—Particles with a specific particle size distribution highly monodisperse size distribution
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/12—Surface area
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Paper (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Abstract
Description
本発明は、加工中のPCCの塊/結晶の抵抗がより強い(すなわち、離散したPCC粒子を形成する傾向がより低い)偏三角面体の形態の低コストの沈降PCCを生成するための方法を提供し、上質紙用途における、従来の偏三角面体状のPCCより改善された剛性および/またはバルクにつながる。その一般的な形態において、本発明は、2段階の製造方法を利用することによってこれらの要件を実現する。第1の段階は、生石灰を消和して消石灰を得るステップを含む。第2の段階は、撹拌せず、熱交換器で事前冷却せず、いずれの添加剤もなしで、消石灰を二酸化炭素ガスでの炭酸化に供してPCCを生成するステップを含む。
従来のPCCの調製
従来のPCCを、以下の通りに調製した。まず、燃焼させた石灰を、消和機中で約185から210°Fの温度で水と反応させて、消石灰を得た。次に、コースの粗粒を、消石灰から分離して、廃棄した。次いで、消石灰を、バッファタンクに採集し、熱交換器にポンプで通してスラリーを冷却し、次いで中間槽に入れた。この後、糖を消石灰に添加した。次いで、冷却した消石灰を、初期温度135°F超で設定した反応器に移した。次いで、受け入れ先の製紙工場の石灰キルンからの二酸化炭素を、撹拌器を作動させた反応器の底に導入して、消石灰を炭酸カルシウムスラリーに変換した。次いで、炭酸カルシウムスラリーをふるいにかけて、45ミクロン超の粒子を除去し、次いで、得られた生成物を、貯蔵タンクにポンプで送り込んだ。2つの生成物を、炭酸化開始温度を変更することによってこの方法を用いて調製した。1つの生成物は、中位粒径(d50)が2.5ミクロン、BET比表面積が4.9m2/g、d75/d25が1.49であった。この他の生成物は、中位粒径(d50)が2.9ミクロン、BET比表面積が3.8m2/g、d75/d25が1.44であった。
本発明によるPCCの調製
本発明によるPCCを、実施例1の通りだが以下の変更を加えて調製した。まず、消石灰を、熱交換器をポンプで通さず、スラリーを冷却した。第2に、糖を消石灰に添加しなかった。第3に、炭酸化反応を、撹拌器を作動せずに行った。この方法で調製した生成物は、中位粒径(d50)が2.5ミクロン、BET比表面積が4.7m2/g、d75/d25が1.5であった。
手すき紙試験
比較例1からの従来のPCCおよび実施例2からの本発明によるPCCを使用して、さらなる試験のための手すき紙を準備した。さらに特定すれば、手すき紙を、まず広葉樹パルプ80%と針葉樹パルプ20%を合わせることによって調製し、100%のパルプミックスを達成した。次いで、手すき紙を、そのパルプ80%および従来のPCCまたは本発明によるPCCのいずれか20%を使用して作った。次いで、手すき紙を以下の試験に供した。
抵抗試験
従来の方法によって調製されたPCC(「既存のPCC」)および本発明の方法によって調製されたPCC(「新規のPCC」)を、ローターの異周速によって生み出される遠心効果およびせん断効果による応力を受ける遠心分離を伴う抵抗試験に供した。この試験のパラメーターは、以下の通りであった。
実施時間 約60分
遠心分離機、型: KHD Humboldt SC01
円錐角: 10°
ドラム直径: 268mm
プール深さ: 168mm
ローター速度: 4450分−1
異周速ローター速度: 41分−1
供給量: 400l/h
モーター定格電流: 28A
モーター定格出力: 15kW
Claims (20)
- 沈降炭酸カルシウム(PCC)を調製するための方法であって、
(a)生石灰を消和して消石灰を得るステップ; ならびに
(b)撹拌せず、熱交換器中で事前冷却せず、およびいずれの添加剤もなしで、前記消石灰を二酸化炭素ガスで炭酸化に供してPCCを生成するステップ
を含む、方法。 - ステップ(a)が、初期温度85°Fから120°Fで行われ、好ましくは初期温度95°Fから110°Fで行われる、請求項1に記載の方法。
- ステップ(a)における反応の温度が、180°Fから210°Fまで上昇し、好ましくは195°Fから205°Fまで上昇する、請求項1または2に記載の方法。
- (a)が、混合または撹拌によって行われる、請求項1から3のいずれか一項に記載の方法。
- ステップ(a)で得られた消石灰が、固体10から20%の固形分を有する、好ましくは固体12から18%の固形分を有する、請求項1から4のいずれか一項に記載の方法。
- ステップ(a)で得られた消石灰をふるい分けに供することをさらに含む、請求項1から5のいずれか一項に記載の方法。
- 空冷の結果として、ステップ(a)で得られた消石灰の温度が、ステップ(b)の炭酸化の前に40°Fから70°F低下する、請求項1から6のいずれか一項に記載の方法。
- ステップ(a)で得られた消石灰が、ステップ(b)の炭酸化の前に、熱交換器中での冷却に供されない、請求項1から7のいずれか一項に記載の方法。
- ステップ(b)での炭酸化反応が、初期温度130°Fから160°Fで実施され、好ましくは初期温度135°Fから145°Fで実施される、請求項1から8のいずれか一項に記載の方法。
- ステップ(b)で得られたPCCが単離される、請求項1から9のいずれか一項に記載の方法。
- ステップ(b)で得られたPCCが、ふるい分け、脱水、分散および/または粉砕ステップに供され、PCC生成物を得る、請求項1から10のいずれか一項に記載の方法。
- ステップ(b)で得られたPCCが、1つ以上のふるいに通されて、PCC生成物を得る、請求項1から11のいずれか一項に記載の方法。
- PCC生成物が、85%以上の偏三角面体状の粒子を含有し、好ましくは90%以上の偏三角面体状の粒子を含有し、より好ましくは95%以上の偏三角面体状の粒子を含有する、請求項11または12に記載の方法。
- PCC生成物の中位粒径(d50)が2.0から3.0ミクロンであり、好ましくは2.2から2.8ミクロンである、請求項11または12に記載の方法。
- PCC生成物のBET表面積が4.0から7.0m2/gである、請求項11または12に記載の方法。
- 請求項1から10のいずれか一項に記載の方法によって生成されるPCC。
- 請求項11から15のいずれか一項に記載の方法によって生成されるPCC生成物。
- 請求項16に記載のPCCまたは請求項17に記載のPCC生成物を含む材料。
- 材料が、紙、紙コーティング、紙製品、インク、塗料、コーティング、プラスチック、接着剤、建築製品、食品または医薬製品であり、好ましくは紙であり、より好ましくは非塗工上質紙である、請求項18に記載の材料。
- 紙、紙コーティング、紙製品、インク、塗料、コーティング、プラスチック、接着剤、建築製品、食品または医薬製品から選択される材料の製造のための、好ましくは紙の製造のための、より好ましくは紙コーティングとしての紙の製造のための、最も好ましくは非塗工上質紙の製造のための、請求項16に記載のPCCまたは請求項17に記載のPCC生成物の使用。
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- 2013-03-19 RU RU2014142635/05A patent/RU2596763C2/ru active
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- 2013-03-19 AU AU2013235257A patent/AU2013235257B2/en not_active Ceased
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AU2016203777A1 (en) | 2016-06-23 |
JP2016164116A (ja) | 2016-09-08 |
WO2013142473A1 (en) | 2013-09-26 |
US9981855B2 (en) | 2018-05-29 |
EP2828434A4 (en) | 2016-03-02 |
AU2013235257B2 (en) | 2016-06-30 |
CA2865647A1 (en) | 2013-09-26 |
CO7051025A2 (es) | 2014-09-10 |
AU2013235257A1 (en) | 2014-09-18 |
JP6295283B2 (ja) | 2018-03-14 |
MX2014011125A (es) | 2014-12-10 |
IN2014MN02048A (ja) | 2015-08-14 |
US9428398B2 (en) | 2016-08-30 |
RU2014142635A (ru) | 2016-05-20 |
KR20140143183A (ko) | 2014-12-15 |
PL2828434T3 (pl) | 2019-01-31 |
US20160023915A1 (en) | 2016-01-28 |
RU2596763C2 (ru) | 2016-09-10 |
EP2828434B1 (en) | 2018-08-15 |
KR101720401B1 (ko) | 2017-03-27 |
CN104204351B (zh) | 2019-03-12 |
US20150056124A1 (en) | 2015-02-26 |
CN104204351A (zh) | 2014-12-10 |
JP5893795B2 (ja) | 2016-03-23 |
CA2865647C (en) | 2017-04-18 |
EP2828434A1 (en) | 2015-01-28 |
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