CN105753343A - Preparation method of maritime work Portland cement - Google Patents

Preparation method of maritime work Portland cement Download PDF

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Publication number
CN105753343A
CN105753343A CN201610117439.1A CN201610117439A CN105753343A CN 105753343 A CN105753343 A CN 105753343A CN 201610117439 A CN201610117439 A CN 201610117439A CN 105753343 A CN105753343 A CN 105753343A
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CN
China
Prior art keywords
portland cement
preparation
work portland
gypsum
cement
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
Application number
CN201610117439.1A
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Chinese (zh)
Inventor
邓玉莲
朱运锋
杨义
韦庆凤
陆金海
黄小青
张芳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangxi Yufeng Cement Co Ltd
Original Assignee
Guangxi Yufeng Cement Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Guangxi Yufeng Cement Co Ltd filed Critical Guangxi Yufeng Cement Co Ltd
Priority to CN201610117439.1A priority Critical patent/CN105753343A/en
Publication of CN105753343A publication Critical patent/CN105753343A/en
Pending legal-status Critical Current

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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
    • C04B7/00—Hydraulic cements
    • C04B7/24—Cements from oil shales, residues or waste other than slag
    • C04B7/26—Cements from oil shales, residues or waste other than slag from raw materials containing flue dust, i.e. fly ash
    • 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
    • C04B7/00—Hydraulic cements
    • C04B7/36—Manufacture of hydraulic cements in general
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

The invention discloses a preparation method of maritime work Portland cement. The preparation method comprises the following steps: (1) weighing each raw material in percentage by weight: 38%-42% of clinkers, 7%-9% of gypsum, 32%-42% of mineral powder, 5%-15% of coal ash and 4%-6% of silica fume; (2) preparing the clinkers: weighing 79%-82% of limestone, 2.0%-3.0% of iron powder and 15%-17% of sandstone in percentage by weight, adding water, grinding to form slurry, carrying out suction filtration, drying, grinding, and carrying out high-temperature calcinations; and (3) adding the calcined clinkers, gypsum, coal ash and silica fume into a cement grinding mill, carrying out powder milling, and adding mineral powder by virtue of a homogenizer, so as to obtain the maritime work Portland cement. The maritime work Portland cement prepared by virtue of the preparation method can completely meet national standard of the People's Republic of China GB/T20100972-T-609 Maritime Work Portland Cement; and the operation is simple and convenient, and the effect is good.

Description

The preparation method of sea work portland cement
Technical field
The present invention relates to cement technology field, the preparation method of a kind of sea work portland cement.
Background technology
Sea work portland cement be mainly used in enclose sea make dike, sea port dock, Offshore Bridges it can also be used to reservoir dam, Water conservancy tunnel, culvert diversion works and rivers bridge foundation engineering, be equally applicable to have the industry of anticorrosive requirement and civilian build Build engineering.Above-mentioned building is according to ordinary cement, and under long-time corrosion condition, intensity significantly reduces, poor durability, and impact is built Build the intensity of thing.
Containing high additive slag, flyash in the work portland cement of existing sea, though it is high to possess later strength, good corrosion resistance Feature, but shortcoming to be early strength low.Although later stage research is by using granular technology and the complex technique of composition material, Inside mix specific inorganic coagulation material, excite " lateral reactivity " in gelating material, overcome high additive cement early strength low Shortcoming, retain that later strength is high, the advantage of good corrosion resistance, but the resistance of chloride ion penetration of current extra large work portland cement And sulphate-corrosion resistance, still it is unable to reach and is difficult to use for a long time requirement.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, propose the preparation method of a kind of sea work portland cement, easy and simple to handle, produce Product resistance of chloride ion penetration and sulphate-corrosion resistance are good.
In order to realize foregoing invention purpose, the present invention provides techniques below scheme: the preparation of a kind of sea work portland cement Method, comprises the following steps:
(1), by the following percentage by weight each raw material of incorporation:
Grog 38%～42% gypsum 7%～9%
Breeze 32%～42% flyash 5%～15% silicon ash 4%～6%；
(2), grog makes: takes lime stone 79%～82%, iron powder 2.0%～3.0%, sandstone 15%～17% by weight percentage, adds water Grind to form slurry, suction strainer, drying crush, high-temperature calcination；
, calcining after grog and gypsum, flyash, silicon ash, water inlet mud abrasive dust mill after through homogenizer add breeze, obtain extra large work Portland cement.
Further, SO in described gypsum3Content is 39%.
Compared with prior art, the invention have the advantages that the extra large work portland cement using the present invention to prepare is whole Meet People's Republic of China (PRC) GB/T20100972 T-609 " sea work portland cement " national standard；Easy and simple to handle, effect Good.
Accompanying drawing explanation
Fig. 1 is the process chart of the preparation method of sea of the present invention work portland cement.
Detailed description of the invention
Describing the present invention below in conjunction with the accompanying drawings, the description of this part is only exemplary and explanatory, should not Protection scope of the present invention is had any restriction effect.
As it is shown in figure 1, a kind of sea work portland cement preparation method, produce raw material be with grog, gypsum, breeze, Flyash, silicon ashes etc. are primary raw material, and the grinding of cement is key one step producing sea work portland cement；This project uses and opens Road Super-fine grinder grinding system clinker grinding and mixing material are by mixing slag powders preparation sea work portland cement after homogenizer.
Weight percentage shared by each raw material is respectively as follows:
Grog 38%～42% gypsum 7%～9%
Breeze 32%～42% flyash 5%～15% silicon ash 4%～6%.
Grog makes: grog makes: take lime stone 79%～82%, iron powder 2.0%～3.0%, sandstone 15% by weight percentage ～17%, add water grind to form slurry, suction strainer, drying crush, high-temperature calcination；
Grog after calcining and gypsum, flyash, silicon ash, add breeze through homogenizer after water inlet mud abrasive dust mill, obtain extra large work silicon Acid salt cement.
1, the different slag powders incorporation impacts on cement performance
Fly-ash-contained certain in the case of, mix different slag powders, by Con trolling index: SO3=3.2 ± 0.3%, specific area =390±10m2/ kg is controlled, and carries out intensity and corrosion resistance of chloride ion is tested and seen Tables 1 and 2:
Table 1 is mixed breeze and is produced control program
Breeze big mill quality of production data mixed by table 2
From upper table 1, table 2, along with the increase of contents of ground slag, the intensity of cement is more and more lower, and resisting chloride ion penetration diffusion The best.
2, the different fly-ash-contained impacts on cement performance
In the case of breeze incorporation is certain, mix different flyash, by Con trolling index: SO3=3.2 ± 0.3%, specific area= 390±10m2/ kg controls, and carries out intensity and resisting chloride ion penetration test is shown in Table 3, table 4:
Table 3 fly ash produces control program
Table 4 fly ash big mill quality of production data
From upper table 3, table 4, with the increase of doping quantity of fly ash, the intensity of cement is more and more lower, and resisting chloride ion penetration diffusion The best.But doping quantity of fly ash increases the early stage on cement and later strength impact is bigger.
Integrated industrialization test 1, test 2, carried out further optimization to the industrialized production of sea work portland cement, mainly Utilize company's slag vertical-mill to produce specific surface area and be up to 460m2The breeze of/kg mixes cement for construction in sea, and gypsum has been carried out high-quality Select, use SO3Content reaches the high-quality natural gypsum of 39%, and mixes the silicon ash of 5%, and takes the mode adding grinding aid to enter Row product quality optimizes, by Con trolling index: SO3=3.2 ± 0.3%, specific area=420 ± 10m2/ kg controls, and concrete creation data is such as Table 5 below, table 6:
Table 5 material proportion scheme (%)
Table 6 industrialized production qualitative data
From the point of view of table 5, table 6 industrialized production situation, although breeze, flyash, gypsum quality have been carried out strict selection, reach To corrosion resistance of chloride ion coefficient requirements, blending amount of mixture material must reach more than 45%, but the intensity of cement has phenomenon on the low side, meets Not customer demand, therefore only select to add silicon ash and grinding aid produces cement for construction in sea, the 6-8 month in 2013, company produces 5.5 altogether Ten thousand tons of cement specials for ocean engineering, sell 50,000 tons to Guangxi overseas project Co., Ltd for the Luanda of An Gela Beach engineering construction.
The technical performance index reached and level:
After this Project Product sea work Portland cement production is succeeded in developing, completing the detection of various performance, company entrusts China to build Build material science research Zong Yuan state key laboratory this Project Product properties is tested and is detected, detect project Including: when cement sulfuric-resisting erosion factor, chloride diffusion coefficient, sulfur trioxide, rupture strength, compression strength, fineness, condensation Between etc. project.Testing result all meets People's Republic of China (PRC) GB/T20100972 T-609 " sea work portland cement " state Family's standard (to national standardization administration committee and the standard quality portion declaration of Chinese architecture material federation, there is declaration letter), And provided survey report, product quality, technical merit reach domestically leading level.
The quality condition such as table 7 below that the extra large work portland cement produced for 2013 is reached:
Table 7 sea work portland cement material object level contrasts with standard-required
From the point of view of table 7, every quality index all reaches the requirement of the new standard of cement for construction in sea (paper for approval), and serviceability also meets wide The requirement of Engineering Co., Ltd outside the Xihai sea.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art For Yuan, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should It is considered as protection scope of the present invention.

Claims (2)

1. a preparation method for extra large work portland cement, comprises the following steps:
(1), by the following percentage by weight each raw material of incorporation:
Grog 38%～42% gypsum 7%～9%
Breeze 32%～42% flyash 5%～15% silicon ash 4%～6%；
(2), grog makes: takes lime stone 79%～82%, iron powder 2.0%～3.0%, sandstone 15%～17% by weight percentage, adds water Grind to form slurry, suction strainer, drying crush, high-temperature calcination；
, calcining after grog and gypsum, flyash, silicon ash, water inlet mud abrasive dust mill after through homogenizer add breeze, obtain extra large work Portland cement.
2. the preparation method of the most extra large work portland cement, it is characterised in that: SO in described gypsum3Content is 39%。
CN201610117439.1A 2016-03-02 2016-03-02 Preparation method of maritime work Portland cement Pending CN105753343A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610117439.1A CN105753343A (en) 2016-03-02 2016-03-02 Preparation method of maritime work Portland cement

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Application Number Priority Date Filing Date Title
CN201610117439.1A CN105753343A (en) 2016-03-02 2016-03-02 Preparation method of maritime work Portland cement

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Publication Number Publication Date
CN105753343A true CN105753343A (en) 2016-07-13

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2189632C (en) * 1994-11-04 2004-01-13 Gregory S. Barger Novel cementitious systems and novel methods of making the same
CN101037306A (en) * 2003-09-19 2007-09-19 中国建筑材料科学研究院 Novel high sulfur-resistant cement
CN101343150A (en) * 2008-07-23 2009-01-14 宁波科环新型建材股份有限公司 High-performance cement for construction in sea and preparation thereof
CN103739258A (en) * 2013-11-28 2014-04-23 苏州负碳谷材料科技有限公司 Red mud cement and preparation method thereof
CN104556755A (en) * 2014-12-30 2015-04-29 天津振兴水泥有限公司 Cement for ocean engineering
CN105347707A (en) * 2015-10-30 2016-02-24 中国建筑材料科学研究总院 Anti-erosion low calcium portland cement and preparation method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2189632C (en) * 1994-11-04 2004-01-13 Gregory S. Barger Novel cementitious systems and novel methods of making the same
CN101037306A (en) * 2003-09-19 2007-09-19 中国建筑材料科学研究院 Novel high sulfur-resistant cement
CN101343150A (en) * 2008-07-23 2009-01-14 宁波科环新型建材股份有限公司 High-performance cement for construction in sea and preparation thereof
CN103739258A (en) * 2013-11-28 2014-04-23 苏州负碳谷材料科技有限公司 Red mud cement and preparation method thereof
CN104556755A (en) * 2014-12-30 2015-04-29 天津振兴水泥有限公司 Cement for ocean engineering
CN105347707A (en) * 2015-10-30 2016-02-24 中国建筑材料科学研究总院 Anti-erosion low calcium portland cement and preparation method thereof

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Application publication date: 20160713

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