CN108529910A - A kind of preparation method of steel slag cement - Google Patents
A kind of preparation method of steel slag cement Download PDFInfo
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- CN108529910A CN108529910A CN201810607065.0A CN201810607065A CN108529910A CN 108529910 A CN108529910 A CN 108529910A CN 201810607065 A CN201810607065 A CN 201810607065A CN 108529910 A CN108529910 A CN 108529910A
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- steel slag
- mortar
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- 239000002893 slag Substances 0.000 title claims abstract description 31
- 239000004568 cement Substances 0.000 title claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 26
- 239000010959 steel Substances 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims description 5
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 14
- 230000000694 effects Effects 0.000 claims abstract description 9
- 239000010440 gypsum Substances 0.000 claims abstract description 9
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 9
- 238000002474 experimental method Methods 0.000 claims abstract description 8
- 239000012190 activator Substances 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 230000000704 physical effect Effects 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims abstract description 4
- 238000012360 testing method Methods 0.000 claims abstract description 4
- 238000013329 compounding Methods 0.000 claims abstract description 3
- 239000000843 powder Substances 0.000 claims description 12
- 239000004615 ingredient Substances 0.000 claims description 5
- 239000004576 sand Substances 0.000 claims description 5
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 3
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 3
- 235000011152 sodium sulphate Nutrition 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000013112 stability test Methods 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
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
- C04B7/14—Cements containing slag
- C04B7/147—Metallurgical slag
-
- 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
Landscapes
- 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
本发明公开了一种大掺量钢渣水泥的制备方法，其特征在于：该方法采用将水泥熟料、石膏、按照一定配比配料混合后，加入激发剂拌合进行胶砂实验，水胶比1:2，胶砂比1:3。激发剂为外掺加入，加入量为上述配合混合总质量的1‑3%，加入方法为加入到水里溶解搅拌均匀后再与胶砂混合。对胶砂3d、28d龄期的物理性能进行实验，测试其抗折抗压强度、安定性，计算活性指数，本发明的钢渣水泥的3d、28d抗折强度分别为3.650、6.742MPa，抗压强度分别为16.25、42.93MPa，均达到42.5水泥强度等级要求（3d、28d抗折强度分别为3.5、6.5MPa，抗压强度分别为15、42.5MPa），安定性检验均合格，钢渣水泥的3d、28d活性指数分别为98.37%、93.25%。The invention discloses a method for preparing large-volume steel slag cement, which is characterized in that: the method adopts the method of mixing cement clinker and gypsum according to a certain proportion, adding an activator and mixing to carry out a mortar experiment, and the water-cement ratio 1:2, mortar ratio 1:3. The activator is added by external mixing, and the added amount is 1-3% of the total mass of the above compounding mixture. The adding method is to dissolve in water and stir evenly before mixing with the mortar. Carry out experiment to the physical properties of mortar 3d, 28d age, test its flexural compressive strength, stability, calculate activity index, the 3d, 28d flexural strength of steel slag cement of the present invention are respectively 3.650, 6.742MPa, compressive strength The strengths are 16.25 and 42.93MPa respectively, both of which meet the requirements of 42.5 cement strength grades (3d and 28d flexural strengths are 3.5 and 6.5MPa respectively, and the compressive strengths are 15 and 42.5MPa respectively). , 28d activity index were 98.37%, 93.25%.
Description
技术领域technical field
本发明属于建筑材料领域，具体涉及一种大掺量钢渣水泥的制备方法。The invention belongs to the field of building materials, and in particular relates to a method for preparing large-volume steel slag cement.
背景技术Background technique
钢渣是钢铁冶炼过程不可避免产生的一种冶金固体废物。钢渣的大量堆积不仅占用土地，还会影响土壤的酸碱性，已严重威胁到我国可持续发展战略，对钢渣的大量利用迫在眉睫。钢渣具有一定的水硬性，使其作为水泥掺合料具有良好的社会效益，符合我国可持续发展的战略目标，但因钢渣活性差、安定性差导致其利用率偏低，且随着钢渣掺量的增加其水硬性表现更差，晚期强度难以达到42.5强度等级的要求。Steel slag is a kind of metallurgical solid waste inevitably produced in the iron and steel smelting process. The massive accumulation of steel slag not only occupies land, but also affects the acidity and alkalinity of the soil, which has seriously threatened the sustainable development strategy of our country, and the massive utilization of steel slag is imminent. Steel slag has a certain hydraulicity, which makes it have good social benefits as a cement admixture, which is in line with the strategic goal of sustainable development in my country. However, due to the poor activity and stability of steel slag, its utilization rate is low. The hydraulic performance is worse with the increase of the increase, and the late strength is difficult to meet the requirements of the 42.5 strength grade.
发明内容Contents of the invention
本发明所要解决的技术问题是：提供一种大掺量钢渣水泥的制备方法，能够将是大掺量钢渣水泥达到42.5水泥强度等级及安定性的要求，以克服现有技术的不足。The technical problem to be solved by the present invention is to provide a preparation method of high-volume steel slag cement, which can meet the requirements of 42.5 cement strength grade and stability, so as to overcome the shortcomings of the prior art.
本发明是这样实现的：The present invention is achieved like this:
一种大掺量钢渣水泥的制备方法，该方法采用将水泥熟料、石膏、按照一定配比配料混合后，加入激发剂拌合进行胶砂实验，水胶比1:2，胶砂比1:3。激发剂为外掺加入，加入量为上述配合混合总质量的1-3%，加入方法为加入到水里溶解搅拌均匀后再与胶砂混合。对胶砂3d、28d龄期的物理性能进行实验，测试其抗折抗压强度、安定性，计算活性指数；其中按重量份算，配料配比为：A method for preparing large-volume steel slag cement. The method adopts mixing cement clinker, gypsum, and ingredients according to a certain ratio, and then adding an activator to mix and carry out a mortar experiment. The ratio of water to cement is 1:2, and the ratio of mortar to sand is 1. :3. The activator is added by external mixing, and the added amount is 1-3% of the total mass of the above compounding mixture. The adding method is to dissolve in water and stir evenly, and then mix with the mortar. Carry out experiments on the physical properties of plastic sand at 3d and 28d ages, test its flexural and compressive strength, stability, and calculate the activity index; where calculated by weight, the proportion of ingredients is:
水泥熟料：满足42.5强度等级要求，表面积≥353m2/kg，40-50份；Cement clinker: meet the requirements of 42.5 strength grade, surface area ≥ 353m 2 /kg, 40-50 parts;
石膏：表面积≥355m2/kg，3-5份；Gypsum: surface area ≥ 355m 2 /kg, 3-5 parts;
矿渣粉：表面积≥363m2/kg，15-25份；Slag powder: surface area ≥ 363m 2 /kg, 15-25 parts;
钢渣粉：比表面积≥462m2/kg，25-35分。Steel slag powder: specific surface area ≥ 462m 2 /kg, 25-35 points.
优选的配料配比为:The preferred batching ratio is:
水泥熟料：满足42.5强度等级要求，表面积≥353m2/kg，46.5份；Cement clinker: meet the requirements of 42.5 strength grade, surface area ≥ 353m 2 /kg, 46.5 parts;
石膏：表面积≥355m2/kg，3.5份；Gypsum: surface area ≥ 355m 2 /kg, 3.5 parts;
矿渣粉：表面积≥363m2/kg，20份；Slag powder: surface area ≥ 363m 2 /kg, 20 parts;
钢渣粉：比表面积≥462m2/kg，30分;Steel slag powder: specific surface area ≥ 462m 2 /kg, 30 minutes;
激发剂：硫酸钠，上述混合配料总质量的2%。Stimulator: sodium sulfate, 2% of the total mass of the above mixed ingredients.
由于采用了上述技术方案，与现有技术相比，通过本发明，当钢渣掺量30%时，钢渣水泥的3d、28d抗折强度分别为3.650、6.742MPa，抗压强度分别为16.25、42.93MPa，均达到42.5水泥强度等级要求（3d、28d抗折强度分别为3.5、6.5MPa，抗压强度分别为15、42.5MPa），安定性检验均合格，钢渣水泥的3d、28d活性指数分别为98.37%、93.25%。Due to the adoption of the above technical solution, compared with the prior art, through the present invention, when the steel slag content is 30%, the 3d and 28d flexural strengths of steel slag cement are 3.650 and 6.742 MPa respectively, and the compressive strengths are 16.25 and 42.93 MPa respectively MPa, all meet the requirements of 42.5 cement strength grades (3d and 28d flexural strengths are 3.5 and 6.5MPa respectively, compressive strengths are 15 and 42.5MPa respectively), the stability tests are all qualified, and the 3d and 28d activity indices of steel slag cement are respectively 98.37%, 93.25%.
具体实施方式Detailed ways
下面对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The following clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
本发明的实施例：Embodiments of the invention:
制备方法Preparation
1.原料与配比：1. Raw material and ratio:
水泥熟料：满足42.5强度等级要求，表面积≥353m2/kg，46.5%；Cement clinker: meet the requirements of 42.5 strength grade, surface area ≥ 353m 2 /kg, 46.5%;
石膏：表面积≥355m2/kg，3.5%；Gypsum: surface area ≥ 355m 2 /kg, 3.5%;
矿渣粉：表面积≥363m2/kg，20%；Slag powder: surface area ≥ 363m 2 /kg, 20%;
钢渣粉：比表面积≥462m2/kg，30%；Steel slag powder: specific surface area ≥ 462m 2 /kg, 30%;
激发剂：硫酸钠，上述复合胶凝材料质量的2%。Exciting agent: sodium sulfate, 2% of the mass of the above-mentioned composite gelling material.
2.将上述熟料、石膏、钢渣粉、矿渣粉按照配比配料混合后，加入激发剂拌合后进行胶砂实验，水胶比1:2，胶砂比1:3。激发剂为外掺加入，加入量为复合胶凝材料质量的2%，加入方法为加入到水里溶解搅拌均匀后再与胶砂混合。对胶砂3d、28d龄期的物理性能进行实验，测试其抗折抗压强度、安定性，计算活性指数。2. After mixing the above clinker, gypsum, steel slag powder and slag powder according to the proportioning ratio, add the activator and mix and carry out the mortar experiment. The ratio of water to cement is 1:2, and the ratio of mortar to sand is 1:3. The activator is added externally, and the added amount is 2% of the mass of the composite cementitious material. The adding method is to dissolve in water and stir evenly before mixing with the mortar. Conduct experiments on the physical properties of the mortar at 3d and 28d ages, test its flexural and compressive strength, stability, and calculate the activity index.
3.效果：钢渣掺量30%时，钢渣水泥的3d、28d抗折强度分别为3.650、6.742MPa，抗压强度分别为16.25、42.93MPa，均达到42.5水泥强度等级要求（3d、28d抗折强度分别为3.5、6.5MPa，抗压强度分别为15、42.5MPa），安定性检验均合格，钢渣水泥的3d、28d活性指数分别为98.37%、93.25%。。3. Effect: When the amount of steel slag is 30%, the 3d and 28d flexural strengths of steel slag cement are 3.650 and 6.742MPa respectively, and the compressive strengths are 16.25 and 42.93MPa respectively, all reaching the requirements of 42.5 cement strength grades (3d, 28d flexural strength The strengths are 3.5, 6.5MPa, and the compressive strengths are 15, 42.5MPa respectively), and the stability tests are all qualified. The 3d and 28d activity indices of steel slag cement are 98.37% and 93.25% respectively. .
上述方案的描述是为便于该技术领域的普通技术人员能理解和使用的发明，熟悉本领域技术的人员显然可以容易地对实施方案做出各种修改，因此，本发明不限于上述实方案，本领域技术人员根据本发明的方法，不脱离本发明范畴所做出的改进和修改都应该在本发明的保护范围之内。The description of the above scheme is an invention that can be understood and used by those of ordinary skill in the technical field. Those skilled in the art can obviously make various modifications to the implementation. Therefore, the present invention is not limited to the above-mentioned practical scheme. Improvements and modifications made by those skilled in the art according to the method of the present invention without departing from the scope of the present invention should be within the protection scope of the present invention.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810607065.0A CN108529910A (en) | 2018-06-13 | 2018-06-13 | A kind of preparation method of steel slag cement |
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| CN201810607065.0A CN108529910A (en) | 2018-06-13 | 2018-06-13 | A kind of preparation method of steel slag cement |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111763043A (en) * | 2019-04-02 | 2020-10-13 | 四川功予名图文设计有限公司 | Mix proportion design method of regenerated all-light concrete |
| CN114988817A (en) * | 2022-07-21 | 2022-09-02 | 福建工程学院 | Sulfate activated steel slag cementing material and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1057632A (en) * | 1990-06-22 | 1992-01-08 | 文铁生 | Sulphate cement made of steel slag |
| WO2011134025A1 (en) * | 2010-04-29 | 2011-11-03 | Boral Cement Limited | Low c02 cement |
-
2018
- 2018-06-13 CN CN201810607065.0A patent/CN108529910A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1057632A (en) * | 1990-06-22 | 1992-01-08 | 文铁生 | Sulphate cement made of steel slag |
| WO2011134025A1 (en) * | 2010-04-29 | 2011-11-03 | Boral Cement Limited | Low c02 cement |
Non-Patent Citations (1)
| Title |
|---|
| 赵旭光等: "高钢渣掺量和高强度钢渣水泥的研制", 《武汉理工大学学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111763043A (en) * | 2019-04-02 | 2020-10-13 | 四川功予名图文设计有限公司 | Mix proportion design method of regenerated all-light concrete |
| CN114988817A (en) * | 2022-07-21 | 2022-09-02 | 福建工程学院 | Sulfate activated steel slag cementing material and preparation method thereof |
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