CN104403403A - 特殊涂料用重质碳酸钙的生产方法 - Google Patents

特殊涂料用重质碳酸钙的生产方法 Download PDF

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Publication number
CN104403403A
CN104403403A CN201410656070.2A CN201410656070A CN104403403A CN 104403403 A CN104403403 A CN 104403403A CN 201410656070 A CN201410656070 A CN 201410656070A CN 104403403 A CN104403403 A CN 104403403A
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Prior art keywords
calcium carbonate
production method
particles
heavy calcium
water
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Inventor
林冬根
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JIANGSU QUNXIN POWDER MATERIAL Co Ltd
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JIANGSU QUNXIN POWDER MATERIAL Co Ltd
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Priority to CN201410656070.2A priority Critical patent/CN104403403A/zh
Publication of CN104403403A publication Critical patent/CN104403403A/zh
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/02—Compounds of alkaline earth metals or magnesium
    • C09C1/021—Calcium carbonates
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
    • C09C3/04—Physical treatment, e.g. grinding, treatment with ultrasonic vibrations
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

特殊涂料用重质碳酸钙的生产方法，涉及涂料的生产技术领域，将重质碳酸钙进行两次分级处理。采用本发明处理后的重质碳酸钙聚集态颗粒减少，分散度提高，颗粒间空隙减少，同时改性分子对碳钙表面的覆盖又使颗粒内的空隙减小，而且这一覆盖还改变了碳酸钙的表面性能，使其表面极性减弱，颗粒间摩擦力变小，润滑性变得更好，故堆积得更加紧密，堆积密度增大，吸油值减小。

Description

特殊涂料用重质碳酸钙的生产方法
技术领域
本发明涉及涂料的生产技术领域，特别是用于生产涂料用重质碳酸钙的生产工艺技术。
背景技术
在一些特殊涂料中采用重质碳酸钙为原料之一，要求重质碳酸钙的吸油性低，要求重质碳酸钙产品的粒径分布中小于12μm的部分不能超过25%，中粒径为16～20μm，同时重钙最大粒径不能太大。但是目前的碳酸钙产品吸油量大、粒径分布不能满足上述要求。
发明内容
本发明目的是针对以上现有技术缺陷，提出一种符合要求的特殊涂料用重质碳酸钙的生产方法。
本发明将重质碳酸钙进行两次分级处理。
众所周知，碳酸钙的吸油量与其颗粒间的空隙及其表面性能、比表面积有关。采用本发明处理后的重质碳酸钙聚集态颗粒减少，分散度提高，颗粒间空隙减少，同时改性分子对碳钙表面的覆盖又使颗粒内的空隙减小，而且这一覆盖还改变了碳酸钙的表面性能，使其表面极性减弱，颗粒间摩擦力变小，润滑性 变得更好，故堆积得更加紧密，堆积密度增大，吸油值减小。
第一次分级处理是除去粒径较大的部分，取得粒径D50为7～10μm的重质碳酸钙初产品。
第二次分级处理是除去粒径较小的部分，取得粒径D50为16～20μm的重质碳酸钙终产品。
具体实施方式
一、生产工艺
1.用雷蒙磨生产普通碳酸钙粉，分级机转速为600±50转/分，得到D50为7～10μm的产品。
2.将普通消光钡进行二次分级，分级机转速为2400±100转/分，得到D50为16～20μm的产品。
二、两种产品粒径及吸油量数据对照：
从上表可见：产品经两次处理，使产品吸油量低，细的成分少，最大粒径达到要求。

Claims (3)

1.特殊涂料用重质碳酸钙的生产方法，其特征在于将重质碳酸钙进行两次分级处理。
2.根据权利要求1所述生产方法，其特征在于第一次分级处理是除去粒径较大的部分，取得粒径D50为7～10μm的重质碳酸钙初产品。
3.根据权利要求1所述生产方法，其特征在于第二次分级处理是除去粒径较小的部分，取得粒径D50为16～20μm的重质碳酸钙终产品。
CN201410656070.2A 2014-11-18 2014-11-18 特殊涂料用重质碳酸钙的生产方法 Pending CN104403403A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410656070.2A CN104403403A (zh) 2014-11-18 2014-11-18 特殊涂料用重质碳酸钙的生产方法

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CN201410656070.2A CN104403403A (zh) 2014-11-18 2014-11-18 特殊涂料用重质碳酸钙的生产方法

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CN104403403A true CN104403403A (zh) 2015-03-11

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1696207A (zh) * 2005-06-16 2005-11-16 王东民 重质碳酸钙超细粉生产***
WO2008117242A2 (en) * 2007-03-26 2008-10-02 O. Brignola S.P.A. Decorative paint coating with optically interactive properties
CN102660148A (zh) * 2012-04-28 2012-09-12 安徽江东科技粉业有限公司 Smc用增韧碳酸钙复合粉的制备方法
CN102773173A (zh) * 2012-07-30 2012-11-14 四川石棉巨丰粉体有限公司 重质碳酸钙的分级方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1696207A (zh) * 2005-06-16 2005-11-16 王东民 重质碳酸钙超细粉生产***
WO2008117242A2 (en) * 2007-03-26 2008-10-02 O. Brignola S.P.A. Decorative paint coating with optically interactive properties
CN102660148A (zh) * 2012-04-28 2012-09-12 安徽江东科技粉业有限公司 Smc用增韧碳酸钙复合粉的制备方法
CN102773173A (zh) * 2012-07-30 2012-11-14 四川石棉巨丰粉体有限公司 重质碳酸钙的分级方法

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Application publication date: 20150311