WO2008138170A1 - Mortier sous forme de poudre sèche produit à partir de scories d'acier et son procédé de production - Google Patents

Mortier sous forme de poudre sèche produit à partir de scories d'acier et son procédé de production Download PDF

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Publication number
WO2008138170A1
WO2008138170A1 PCT/CN2007/001557 CN2007001557W WO2008138170A1 WO 2008138170 A1 WO2008138170 A1 WO 2008138170A1 CN 2007001557 W CN2007001557 W CN 2007001557W WO 2008138170 A1 WO2008138170 A1 WO 2008138170A1
Authority
WO
WIPO (PCT)
Prior art keywords
steel slag
cement
fly ash
mortar
dry mortar
Prior art date
Application number
PCT/CN2007/001557
Other languages
English (en)
Chinese (zh)
Inventor
Jianwei Wang
Original Assignee
Cao, Bugao
Hou, Yucai
Wang, Pengcheng
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 Cao, Bugao, Hou, Yucai, Wang, Pengcheng filed Critical Cao, Bugao
Priority to PCT/CN2007/001557 priority Critical patent/WO2008138170A1/fr
Publication of WO2008138170A1 publication Critical patent/WO2008138170A1/fr

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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
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/08—Slag cements
    • C04B28/082—Steelmaking slags; Converter slags
    • 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
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/20—Resistance against chemical, physical or biological attack
    • C04B2111/29—Frost-thaw resistance
    • 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
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Definitions

  • the present invention relates to the technical field of building materials, and in particular to a formulation for producing dry powder mortar using steel slag and a processing technique thereof.
  • BACKGROUND OF THE INVENTION Dry mortar is also known as dry mortar. It is a dry powdered aggregate (sand), a cementitious material (fly ash, cement), chemical additives, etc., and is scientifically controlled, mixed and homogenized, and chemically reacted. Mechanized production, product packaging or bulk logistics are transported to the site. When working, just add a certain proportion of water and mix well, then you can use the new dry powder mortar directly.
  • the existing dry mortar at home and abroad is to dry the sand and then sieve it. According to the proportion of the conventional mortar mix ratio, the dry sand, cement, auxiliary materials and additives are weighed and then packaged by a single mechanical mixing and mixing. Dry mortar products.
  • the shortage of raw materials and high prices of such products has resulted in high production costs and it is difficult to adapt to the price tolerance of the domestic market.
  • Steel slag refers to the slag which is produced after steel making. After the slag is crushed, the iron and broken iron are taken out for recovery, and the steel slag (also called tailings) is left.
  • the steel slag contains silicon trioxide, aluminum oxide, ferric oxide, calcium oxide, magnesium oxide, etc., and has a hard mass (Mohs hardness of about 8.5 degrees), and a specific gravity of about 1.45 B ⁇ /M 3 . Steel slag is generally stored as industrial waste and has not yet been fully utilized.
  • the object of the present invention is to provide a steel slag dry mortar and a processing technique thereof, so as to fully utilize steel slag, turn waste into treasure, and reduce the cost of mortar.
  • the solution of the present invention is that the steel slag dry silt is mainly prepared by weighting the following materials: steel slag 60-75%, cement and fly ash 25-40%, cement and fly ash The ratio is 2: 3.
  • the 5% by weight of the auxiliary agent is 0. 1% by weight.
  • the above auxiliary agent is selected from a water reducing agent.
  • the above auxiliary agent is selected by mixing acrylic acid, cellulose and thickener in any ratio.
  • the above auxiliary agent is selected from the re-decomposable latex powder.
  • the above cement can be selected from three-in-one cement powder, and the three-in-one cement is composed of steel slag by weight percentage.
  • the above three-in-one cement is specifically made of 70% steel slag, 13% bottom slag, and 17% auxiliary material.
  • the above bottom slag may be replaced by fly ash.
  • auxiliary materials are a mixture of 60-70% of coal gangue, 5-15% of gypsum, and 15-25% of clinker.
  • the above auxiliary materials are preferably selected from the group consisting of 70% coal gangue, 10% gypsum, and 20% clinker.
  • the steel slag dry mortar is processed by the following method: first, the steel slag is dried to a water content of 0.5% or less, and is made into a steel slag grit having a particle diameter of 2. 5 mm or less; and then according to a steel slag, 60-75%, cement and fly ash. 25-40%, the proportion of cement and fly ash is 2:3 ratio; then, pulse homogenization is mixed until the uniformity is CV ⁇ 0.3%; the final packaging is the finished steel slag dry mortar.
  • the processing technology of three-in-one cement is: firstly, the steel slag, the bottom slag and the auxiliary materials are respectively dried to a water content of 2-3%; then, the coarse grinding is respectively performed until the particle diameter is 5 mm or less; and then the steel slag is 60-70%, 3% ⁇
  • FIG. 1 is a block diagram showing a process flow of the present invention
  • the steel slag dry mortar according to the present invention is made up of 60-75% by weight of major steel slag sand, 25-40% of cement and fly ash, and the ratio of cement to fly ash is 2:3.
  • Steel slag sand plays an aggregate role in the whole formula. As the proportion of steel slag sand increases, the product cost of dry mortar will decrease, but the consistency, stratification and strength will also decrease. The reduction of steel slag will increase the cost of the product but the consistency. , stratification and strength are also high. Cement and fly ash play a role in the entire formulation, and as the ratio of cement and fly ash increases, the cost of the product rises. High but high consistency, stratification and strength, reduced cement and fly ash will reduce product cost but decrease consistency, stratification and strength.
  • the auxiliary agent plays a functional adjustment role in the whole formulation, and the steel slag dry mortar slurry may be further provided with a 0% by weight of an auxiliary agent, an auxiliary agent for a water reducing agent, or an acrylic acid or cellulose.
  • the thickener is mixed at any ratio, or a re-decomposable latex powder (polymer) is used.
  • the steel slag was dried to a moisture content of 0.5%.
  • the drying system mainly processes the materials required for the product in the raw product process to achieve the moisture content of the material within 3%, which guarantees the technical specifications specified in the production process.
  • the dried steel slag is made into dry steel slag sand having a particle diameter of 2. 5 mm or less.
  • the steel slag of the particle diameter of 2. 5mm or less is directly sifted out for use, and the steel slag sand having a particle diameter of 2. 5mm or more enters the sand making system to form granules.
  • the aggregate of the steel slag dry mortar is sand.
  • the steel slag is dried into sand to replace the river sand to have better product performance and reduce cost.
  • the pulse homogenization is performed in the pulse mixing homogenization system until the uniformity is CV ⁇ 0.3%, so that the product is not stratified, non-segregated, and homogenized.
  • the cement used in the present invention may be selected from ordinary cement or 3-in-1 cement powder.
  • the three-in-one cement powder is made of 60-70% steel slag, bottom slag (which can also be replaced by fly ash, which is equivalent) 10-15%, and auxiliary materials 15- 30%.
  • the excipient may be a mixture of 60-70% coal gangue, 5-15% gypsum, and 15-25% clinker, especially 70% coal gangue, 10% gypsum, and 20% clinker.
  • the formula can also be added with additives according to the quality of the steel slag.
  • the additive is made of aluminum sulfate, ethylene glycol, curing agent, acrylic acid and amine, so that the finished cement can reach the national standard PC32. 5 cement standard and the quality is better.
  • Steel slag is used to replace the semi-finished product in the original cement processing process - clinker.
  • the steel slag When the steel slag is ground to a specific surface area of 450 m 2 /Kg or more, it will activate in the whole formula, and the amount of steel slag will increase.
  • the cost of three-in-one cement products is reduced but the stability is poor, while the reduction of steel slag will increase the cost of the product but the stability is good.
  • the bottom slag (or fly ash) and auxiliary materials play a role in neutralizing the steel slag and complementing the chemical properties throughout the formulation. As the proportion of the bottom slag (or fly ash) and auxiliary materials increases, the three The cost of a cement product is high, the stability is good, but the strength is poor.
  • bottom slag or fly ash
  • auxiliary materials will reduce the cost of the product, and the stability is poor but the strength is good. Therefore, the specific formula of the three-in-one cement is 70% steel slag, 13% bottom slag, and 17% excipients.
  • the processing technology of three-in-one cement is shown in Figure 2:
  • the steel slag, the bottom slag and the auxiliary materials are respectively dried to a water content of 2-3% by a drying system.
  • the drying system mainly processes the materials required for the product in the raw product process to achieve the moisture content of the material within 3%, which guarantees the technical indicators specified in the production process.
  • the dried material is coarsely ground by a coarse grinding system to a particle diameter of 5 mm or less, and the pre-treatment is performed for the next process.
  • the proportion is 60-70% of steel slag, 10-15% of bottom slag, and 15-30% of auxiliary materials.
  • the batching system is the most important in the whole production process, and the accurate ingredients can ensure the quality of the product.
  • the measurement accuracy of the bulk material in the process is less than 0.5% precision, the measurement accuracy of the small material batching 2% ⁇ Achieved less than 0.2% accuracy.
  • the prepared materials are finely ground.
  • the system uses a counter-rotating super-gravity grinding process, and the grinding fineness reaches the specific surface area under the action of physical mechanics, chemistry and instantaneous ultra-high temperature. For the above 450m 2 /Kg, the various properties of the material are changed to meet the national standard PC32. 5 cement standard. Then, pulse homogenization is carried out in a pulse mixing homogenization system.
  • the composition of the steel slag three-in-one cement is complicated, it is composed of a plurality of materials and components, and the pulse mixing system is fully utilized for its components. After the fine grinding after the above grinding, and then homogenizing by the system to a uniform hook degree of CV ⁇ 0.3%, the quality requirement of the final product can be achieved. Finally, through the pneumatic conveying system, enter the packaging system as needed, packaged into three-in-one bagged cement, or bulk three-in-one cement into the material system.

Abstract

L'invention concerne un mortier produit à partir de poudre sèche, composé principalement de 60-75 % en poids de sable de scories d'acier et de 20-40 % en poids de ciment et de cendres volantes, le rapport sable de scories d'acier/ciment et cendres volantes étant de 2:3. L'invention concerne également un procédé de production de ce mortier, consistant à sécher les scories jusqu'à obtenir une teneur en eau égale ou inférieure à 0, 5%, et à les transformer en sable de scories présentant un diamètre de particules égal ou inférieur à 2,5 mm, à mélanger 60-75% de sable de scories d'acier, et 25-40% de ciment et de cendres volantes selon un rapport de 2:3, pour préparer un mélange, à homogénéiser le mélange par un processus pulsé jusqu'à obtenir une uniformité correspondant à un CV < 0,3%, et à compacter le mélange résultant pour obtenir le mortier final. Ce mortier présente toutes les propriétés d'un mortier traditionnel et peut remplacer un mortier conventionnel. Il présente une durabilité, une résistance au gel et une force de liaison élevées, et son coût est inférieur de 50% au mortier conventionnel. La présente invention comprend l'utilisation d'une quantité importante des scories d'acier, et assure ainsi recyclage des ressources et apporte une solution aux problèmes de pollution dus aux résidus des aciéries.
PCT/CN2007/001557 2007-05-14 2007-05-14 Mortier sous forme de poudre sèche produit à partir de scories d'acier et son procédé de production WO2008138170A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2007/001557 WO2008138170A1 (fr) 2007-05-14 2007-05-14 Mortier sous forme de poudre sèche produit à partir de scories d'acier et son procédé de production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2007/001557 WO2008138170A1 (fr) 2007-05-14 2007-05-14 Mortier sous forme de poudre sèche produit à partir de scories d'acier et son procédé de production

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WO2008138170A1 true WO2008138170A1 (fr) 2008-11-20

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102060479A (zh) * 2009-11-16 2011-05-18 中冶建筑研究总院有限公司 一种水泥基超高强耐磨板及其生产方法
CN103755191A (zh) * 2013-10-29 2014-04-30 江苏名和集团有限公司 一种低需水量矿物掺合料及其制备方法
CN104003667A (zh) * 2014-06-03 2014-08-27 上海宝冶钢渣综合开发实业有限公司 一种混凝土空心隔墙板及其制备方法
CN107686295A (zh) * 2017-09-30 2018-02-13 翟孝东 一种干混砂浆生产方法
CN109678368A (zh) * 2019-01-24 2019-04-26 武汉理工大学 一种钢渣集料生产方法
CN111233413A (zh) * 2020-01-15 2020-06-05 安徽工业大学 一种高膨胀能钢渣混凝土及其制备方法
CN113173755A (zh) * 2021-04-21 2021-07-27 中建材创新科技研究院有限公司 一种高出浆率且高固结率干粉盾构同步注浆料及其生产工艺
CN114507076A (zh) * 2020-11-15 2022-05-17 南京宝地梅山产城发展有限公司 一种竖窑面板浇注料及使用方法
CN115724608A (zh) * 2022-09-23 2023-03-03 福建源鑫环保科技有限公司 一种高活性钢渣复配超细粉及其制备方法以及应用

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1955136A (zh) * 2005-10-25 2007-05-02 王建伟 三合一水泥及其加工工艺
CN1995140A (zh) * 2005-12-28 2007-07-11 北京市天山新材料技术公司 一种单组分硅烷改性聚醚密封胶及其制备方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1955136A (zh) * 2005-10-25 2007-05-02 王建伟 三合一水泥及其加工工艺
CN1995140A (zh) * 2005-12-28 2007-07-11 北京市天山新材料技术公司 一种单组分硅烷改性聚醚密封胶及其制备方法

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102060479A (zh) * 2009-11-16 2011-05-18 中冶建筑研究总院有限公司 一种水泥基超高强耐磨板及其生产方法
CN103755191A (zh) * 2013-10-29 2014-04-30 江苏名和集团有限公司 一种低需水量矿物掺合料及其制备方法
CN104003667A (zh) * 2014-06-03 2014-08-27 上海宝冶钢渣综合开发实业有限公司 一种混凝土空心隔墙板及其制备方法
CN107686295A (zh) * 2017-09-30 2018-02-13 翟孝东 一种干混砂浆生产方法
CN109678368A (zh) * 2019-01-24 2019-04-26 武汉理工大学 一种钢渣集料生产方法
CN111233413A (zh) * 2020-01-15 2020-06-05 安徽工业大学 一种高膨胀能钢渣混凝土及其制备方法
CN111233413B (zh) * 2020-01-15 2022-03-11 安徽工业大学 一种高膨胀能钢渣混凝土及其制备方法
CN114507076A (zh) * 2020-11-15 2022-05-17 南京宝地梅山产城发展有限公司 一种竖窑面板浇注料及使用方法
CN114507076B (zh) * 2020-11-15 2022-11-15 南京宝地梅山产城发展有限公司 一种竖窑面板浇注料及使用方法
CN113173755A (zh) * 2021-04-21 2021-07-27 中建材创新科技研究院有限公司 一种高出浆率且高固结率干粉盾构同步注浆料及其生产工艺
CN115724608A (zh) * 2022-09-23 2023-03-03 福建源鑫环保科技有限公司 一种高活性钢渣复配超细粉及其制备方法以及应用

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