CN114656171A - Preparation method of desulfurized fly ash cementing material - Google Patents
Preparation method of desulfurized fly ash cementing material Download PDFInfo
- Publication number
- CN114656171A CN114656171A CN202210470326.5A CN202210470326A CN114656171A CN 114656171 A CN114656171 A CN 114656171A CN 202210470326 A CN202210470326 A CN 202210470326A CN 114656171 A CN114656171 A CN 114656171A
- Authority
- CN
- China
- Prior art keywords
- fly ash
- desulfurized fly
- cementing material
- slag powder
- preparation
- 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
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- 239000000463 material Substances 0.000 title claims abstract description 39
- 239000010881 fly ash Substances 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000000843 powder Substances 0.000 claims abstract description 26
- 239000002893 slag Substances 0.000 claims abstract description 26
- 239000000292 calcium oxide Substances 0.000 claims abstract description 17
- 235000012255 calcium oxide Nutrition 0.000 claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 13
- 239000010959 steel Substances 0.000 claims abstract description 13
- 238000000498 ball milling Methods 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 5
- 238000002156 mixing Methods 0.000 claims description 12
- 239000004570 mortar (masonry) Substances 0.000 claims description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 6
- 239000004576 sand Substances 0.000 claims description 6
- 239000012190 activator Substances 0.000 claims description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 235000019353 potassium silicate Nutrition 0.000 claims description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000011049 filling Methods 0.000 abstract description 3
- 239000003795 chemical substances by application Substances 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000005065 mining Methods 0.000 abstract description 2
- 239000002956 ash Substances 0.000 description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 7
- 238000006477 desulfuration reaction Methods 0.000 description 6
- 230000023556 desulfurization Effects 0.000 description 6
- 238000005303 weighing Methods 0.000 description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000004566 building material Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- GBAOBIBJACZTNA-UHFFFAOYSA-L calcium sulfite Chemical compound [Ca+2].[O-]S([O-])=O GBAOBIBJACZTNA-UHFFFAOYSA-L 0.000 description 1
- 235000010261 calcium sulphite Nutrition 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 230000003334 potential effect Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 238000001694 spray drying Methods 0.000 description 1
- 238000003756 stirring Methods 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
- C04B7/153—Mixtures thereof with other inorganic cementitious materials or other activators
- C04B7/1535—Mixtures thereof with other inorganic cementitious materials or other activators with alkali metal containing activators, e.g. sodium hydroxide or waterglass
-
- 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
- C04B7/243—Mixtures thereof with activators or composition-correcting additives, e.g. mixtures of fly ash and alkali activators
-
- 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)
- Inorganic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a preparation method of a desulfurized fly ash cementing material, wherein the cementing material system takes granulated blast furnace slag powder, steel slag powder, desulfurized fly ash, quick lime and an exciting agent as materials, and is directly processed into a filling cementing material for ore through ball milling, wherein the use amount of the desulfurized fly ash can reach 18 percent, at least 9 million tons of desulfurized fly ash can be used every year according to the annual production of 50 million mining cementing materials, and 500 million tons of solidified tailings can be used. The preparation method of the desulfurized fly ash cementing material can consume a large amount of desulfurized fly ash, and the whole method has the characteristics of low energy consumption and environmental protection, and the prepared cementing material is directly used for mine filling.
Description
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to a preparation method of a desulfurized fly ash cementing material.
Background
Power plant and steel manufacturing enterprise produce a large amount of flue gas desulfurization ash, and stacking and storing of flue gas desulfurization ash easily cause certain pollution to the environment, and how to handle desulfurization ash timely, high-efficient and safe is a big difficult problem that faces at present. The traditional desulfurized fly ash disposal mode is mainly applied to cement enterprises, but because of the production process limitation of the cement enterprises, the desulfurized fly ash cannot be used in large quantity.
Disclosure of Invention
Aiming at the problems of single desulfurization ash treatment mode and small treatment capacity in the prior art, the invention provides a preparation method of a desulfurization ash cementing material, and the specific technical scheme is as follows:
the cementing material system takes granulated blast furnace slag powder, steel slag powder, desulfurized ash, quick lime and an exciting agent as materials, and is directly processed into the filling cementing material for the ore through ball milling, wherein the use amount of the desulfurized ash can reach 18 percent, at least 9 million tons of desulfurized ash can be used every year according to the calculation of 50 million mining cementing materials produced every year, and 500 million tons of solidified tailings can be used.
The cementing material system is prepared by mixing the following materials in parts by weight:
30-50 parts of slag powder
10-15 parts of steel slag powder
30-50 parts of desulfurized fly ash
4-7 parts of quicklime
3-5 parts of an excitant.
The desulfurized ash is generated by a rotary Spray Drying (SDA) flue gas desulfurization technology, and the desulfurized ash mainly comprises calcium sulfite hemihydrate, calcium carbonate or calcium hydroxide, and the balance of aluminum oxide, silicon dioxide, magnesium oxide and the like.
The slag powder is granulated blast furnace slag powder.
The activator provides an alkaline environment for the cementing material system, and sodium hydroxide, sodium carbonate and water glass can all achieve the purpose. And the composite excitation is more beneficial to exciting the potential activity of the base material and improving the performance of a gelling system.
In the technical scheme, the quicklime and the excitant at least contain 50 percent of quicklime.
In the technical scheme, the mass ratio of the slag powder, the steel slag powder, the desulfurized fly ash and the quicklime is 3: 1: 3.
according to the technical scheme, the cementing material is mixed with sand and water and applied to manufacturing the mortar, namely, the cementing material and the sand are mixed in proportion, then a certain amount of water is added, and the mixture is stirred and mixed uniformly to obtain the mortar.
In the technical scheme, the mass ratio of the cementing material to the sand is 1: (1-3).
The beneficial effects of the invention are as follows: the preparation method of the desulfurized fly ash cementing material can consume a large amount of desulfurized fly ash, and the whole method has the characteristics of low energy consumption and environmental protection, and the prepared cementing material is directly used for preparing mortar.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the embodiments.
Example 1
Slag powder 30kg
10kg of steel slag powder
Desulfurized fly ash 3kg
Quick lime 4kg
Excitant 3kg
The preparation method comprises the following steps: and weighing the above components according to the mass, mixing and ball-milling to obtain the cementing material.
Example 2
35kg of slag powder
11kg of steel slag powder
Desulfurized fly ash 35kg
Quicklime 5kg
Excitant 4kg
The preparation method comprises the following steps: and weighing the above components according to the mass, mixing and ball-milling to obtain the cementing material.
Example 3
Slag powder 40kg
12kg of steel slag powder
40kg of desulfurized fly ash
Quicklime 6kg
Excitant 5kg
The manufacturing method comprises the following steps: and weighing the above components according to the mass, mixing and ball-milling to obtain the cementing material.
Example 4
Slag powder 45kg
13kg of steel slag powder
Desulfurized fly ash 45kg
Quicklime 6kg
Excitant 5kg
The preparation method comprises the following steps: and weighing the above components according to the mass, mixing and ball-milling to obtain the cementing material.
Example 5
Slag powder 50kg
14kg of steel slag powder
50kg of desulfurized fly ash
Quicklime 7kg
Excitant 5kg
The preparation method comprises the following steps: and weighing the above components according to the mass, mixing and ball-milling to obtain the cementing material.
Example 6
Slag powder 50kg
15kg of steel slag powder
50kg of desulfurized fly ash
Quicklime 7kg
Excitant 5kg
The preparation method comprises the following steps: and weighing the above components according to the mass, mixing and ball-milling to obtain the cementing material.
Preparing the cementing material obtained in the above embodiments 1-6 into mortar, specifically, mixing the cementing material and sand in proportion, adding a certain amount of water, stirring and mixing uniformly to obtain the mortar, wherein the mass ratio of the cementing material to the sand in the mortar preparation process is 1: 1.
the technical performance of the mortar prepared in the above examples was tested according to the standard of basic performance test methods for building mortar (JGJ/T70-2009), and the results of the technical performance test are shown in the following table, where the table shows the compressive strength of 7d and the flexural strength of 7 d.
| Compressive strength (MPa) | Flexural strength (MPa) | |
| Example 1 | 18.5 | 5.4 |
| Example 2 | 19.3 | 6.3 |
| Example 3 | 19.2 | 6.7 |
| Example 4 | 18.9 | 6.1 |
| Example 5 | 18.1 | 7.2 |
| Example 6 | 20.9 | 6.9 |
The above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto.
Claims (4)
1. The preparation method of the desulfurized fly ash cementing material is characterized by mixing and ball-milling slag powder, steel slag powder, desulfurized fly ash, quick lime and an activator in proportion to obtain the cementing material, wherein the mixing amount of the desulfurized fly ash is not less than 18 percent, the total mixing amount of the quick lime and the activator is not more than 10 percent, and the activator comprises at least one of sodium hydroxide, sodium carbonate and water glass.
2. The method for preparing desulfurized fly ash binding material according to claim 1, wherein the quicklime and the excitant contain at least 50% of quicklime.
3. The preparation method of the desulfurized fly ash cementing material according to claim 1, wherein the mass ratio of the slag powder, the steel slag powder, the desulfurized fly ash and the quicklime is 3: 1: 3.
4. the method for preparing the desulfurized fly ash binding material according to claim 1, wherein the binding material is mixed with sand and water and applied to making mortar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210470326.5A CN114656171A (en) | 2022-04-28 | 2022-04-28 | Preparation method of desulfurized fly ash cementing material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210470326.5A CN114656171A (en) | 2022-04-28 | 2022-04-28 | Preparation method of desulfurized fly ash cementing material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114656171A true CN114656171A (en) | 2022-06-24 |
Family
ID=82037829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210470326.5A Pending CN114656171A (en) | 2022-04-28 | 2022-04-28 | Preparation method of desulfurized fly ash cementing material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114656171A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116282984A (en) * | 2023-05-25 | 2023-06-23 | 北京鼎创环保有限公司 | Full-solid waste cementing material, novel roadbed material and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6033467A (en) * | 1995-06-26 | 2000-03-07 | Fenicem Minerals Inc. | Method of making cement or mine backfill from base metal smelter slag |
| CN104844024A (en) * | 2015-04-28 | 2015-08-19 | 铜陵海源超微粉体有限公司 | High-performance gel material prepared by using sludge industrial waste residue and preparation method thereof |
| CN111187045A (en) * | 2020-01-13 | 2020-05-22 | 安徽工业大学 | Mine underground filling mortar prepared from steel slag sand and mineral processing waste |
| CN112279565A (en) * | 2020-09-16 | 2021-01-29 | 中冶南方都市环保工程技术股份有限公司 | Method for preparing mine filling material by using solid waste cemented heavy metal tailings in steel industry |
| CN113087480A (en) * | 2021-02-25 | 2021-07-09 | 上海宝钢新型建材科技有限公司 | Application type cemented filling material containing superfine tail mud and preparation method and application thereof |
-
2022
- 2022-04-28 CN CN202210470326.5A patent/CN114656171A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6033467A (en) * | 1995-06-26 | 2000-03-07 | Fenicem Minerals Inc. | Method of making cement or mine backfill from base metal smelter slag |
| CN104844024A (en) * | 2015-04-28 | 2015-08-19 | 铜陵海源超微粉体有限公司 | High-performance gel material prepared by using sludge industrial waste residue and preparation method thereof |
| CN111187045A (en) * | 2020-01-13 | 2020-05-22 | 安徽工业大学 | Mine underground filling mortar prepared from steel slag sand and mineral processing waste |
| CN112279565A (en) * | 2020-09-16 | 2021-01-29 | 中冶南方都市环保工程技术股份有限公司 | Method for preparing mine filling material by using solid waste cemented heavy metal tailings in steel industry |
| CN113087480A (en) * | 2021-02-25 | 2021-07-09 | 上海宝钢新型建材科技有限公司 | Application type cemented filling material containing superfine tail mud and preparation method and application thereof |
Non-Patent Citations (2)
| Title |
|---|
| 李立涛等: "脱硫灰渣-矿渣复合新型充填胶凝材料试验研究", 《化工矿物与加工》 * |
| 董培鑫等: "利用钢渣微粉开发鞍钢矿山全尾砂充填胶凝材料研究", 《矿业研究与开发》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116282984A (en) * | 2023-05-25 | 2023-06-23 | 北京鼎创环保有限公司 | Full-solid waste cementing material, novel roadbed material and preparation method thereof |
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Application publication date: 20220624 |
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