CN112876146A - Desulfurized ash based wall material and preparation and application thereof - Google Patents
Desulfurized ash based wall material and preparation and application thereof Download PDFInfo
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- CN112876146A CN112876146A CN202110152590.XA CN202110152590A CN112876146A CN 112876146 A CN112876146 A CN 112876146A CN 202110152590 A CN202110152590 A CN 202110152590A CN 112876146 A CN112876146 A CN 112876146A
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- ash
- wall material
- desulfurized
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- 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
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- 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
- C04B2111/00017—Aspects relating to the protection of the environment
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- 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
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- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention provides a desulfurized fly ash based wall material and a preparation method and application thereof. The desulfurization ash-based wall material comprises the following components in percentage by mass: 10-35% of mountain flour with nominal diameter d being not less than 5 and not more than 10mm, 5-30% of mountain flour with d being not less than 2.5 and not more than 5mm, 5-30% of mountain flour with d being not less than 0.6 and not more than 2.5mm, 5-25% of mountain flour with d being less than 0.6mm, 25-40% of desulfurized ash, 10-25% of curing agent and water accounting for 5-25% of the total mass of the mountain flour, the desulfurized ash and the curing agent. The wall material prepared by the invention has the advantages of good water resistance, large softening coefficient, high consolidation strength and the like, can meet the performance requirements of various wall materials, and is convenient to manufacture and low in cost. Meanwhile, the invention takes stone powder and desulfurized ash as raw materials, and the resources are fully recycled.
Description
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to a novel wall material as well as preparation and application thereof.
Background
In the present society, with the shortage of resources and the increasing severity of environmental pollution, the realization of recycling resources and the reduction of environmental pollution have become research hotspots of researchers in various countries. The construction industry, as an important prop industry for economic development in China, can generate a large amount of construction waste every year, is mainly used for backfilling roads and house foundations at present, and only manages the backfilling, and a large amount of construction waste is still stockpiled. How to efficiently consume the construction waste becomes a problem to be solved urgently.
The other bulk industrial solid waste, namely the semi-dry desulfurized fly ash produced by the metallurgy industry and other industries, also faces the double pressure of environmental pollution and resource utilization. Researchers at home and abroad develop researches on the comprehensive utilization of the semi-dry sintering flue gas desulfurization ash in succession, and correspondingly develop application technologies of the semi-dry sintering flue gas desulfurization ash with reference values. However, these techniques have certain limitations and are not fully utilized. At present, the semi-dry sintering flue gas desulfurization ash is still mainly stockpiled, the treatment mode occupies a large amount of scarce and non-renewable land resources, the complex components in the desulfurization ash can cause secondary pollution to the environment, and meanwhile, the high management cost and treatment cost also cause the iron and steel metallurgical enterprises which are difficult to bear heavier environmental protection responsibility and economic burden. The comprehensive utilization of the semi-dry sintering flue gas desulfurization ash is still lack of research close to the practical situation.
The construction waste and the semidry flue gas desulfurization ash are comprehensively utilized to develop a novel wall material, a new way is provided for efficiently consuming two large industrial solid wastes simultaneously, a large amount of wall materials can be provided for the construction industry, and the cyclic utilization of resources is fully realized, so that the construction waste and the semidry flue gas desulfurization ash have very important practical significance.
Disclosure of Invention
Aiming at the current disposal situation of construction waste and desulfurized ash and the problems of resource utilization technology, the invention aims to provide preparation and application of a desulfurized ash based wall material.
In order to achieve the technical purpose, the invention provides a desulfurized fly ash based wall body material which is prepared from the following components in percentage by mass:
10-35% of stone powder with nominal diameter of 5-10 mm and d-10 mm;
5-30% of stone powder with nominal diameter of 2.5-5 mm and d less than 5 mm;
5-30% of stone powder with nominal diameter of 0.6-2.5 mm and d;
5-25% of stone powder with nominal diameter d less than 0.6 mm;
25-40% of desulfurized ash;
10-25% of a curing agent;
5-25% of external water.
Preferably, the stone powder in the desulfurized fly ash based wall body material is construction waste recycled aggregate of Guangxi Shenglong metallurgy Co.
Preferably, the desulfurization ash in the desulfurization ash-based wall body material is desulfurization ash generated in a desulfurization process of sintering flue gas of Guangxi Shenglong metallurgy Co.
Preferably, the water content of the desulfurized fly ash in the desulfurized fly ash based wall material of the invention is less than 2%.
Preferably, the water content of the curing agent in the desulfurized ash based wall material is less than or equal to 1 percent, the screen allowance of a square-hole screen with the size of 80 mu m is less than or equal to 10 percent, the net slurry fluidity is initially more than or equal to 100mm, 30min is more than or equal to 90mm, 60min is more than or equal to 80mm, and the initial setting time is more than or equal to 45 min.
Preferably, the curing agent in the desulfurized ash based wall body material is at least one of SS-W-P type curing agent and SS-W-S type soft soil curing agent (produced by Shandong Mi Gute materials Co., Ltd.).
Preferably, the desulfurized ash based wall body material is prepared from the following components in percentage by mass:
15-30% of stone powder with nominal diameter of 5-10 mm and d-10 mm;
5-15% of stone powder with nominal diameter of 2.5-5 mm and d less than 5 mm;
5-15% of stone powder with nominal diameter of 0.6-2.5 mm and d;
5-15% of stone powder with nominal diameter d less than 0.6 mm;
30-35% of desulfurized ash;
15-20% of a curing agent;
and 10-20% of externally-mixed water.
Further preferably, the desulfurized ash based wall body material is prepared from the following components in percentage by mass:
20-23% of stone powder with nominal diameter of 5-10 mm and d-10 mm;
11-13% of stone powder with nominal diameter of 2.5-5 mm and d less than 5 mm;
11-13% of stone powder with nominal diameter of more than or equal to 0.6 and less than 2.5 mm;
6-8% of stone powder with nominal diameter d less than 0.6 mm;
30-33% of desulfurized ash;
15-18% of a curing agent;
and 10-13% of externally-mixed water.
According to the optimal scheme, the desulfurized ash based wall body material is prepared from the following components in percentage by mass:
22 percent of stone powder with nominal diameter of 5-10 mm and d-10 mm;
12 percent of stone powder with nominal diameter of 2.5-5 mm and d less than 5 mm;
12 percent of stone powder with nominal diameter of more than or equal to 0.6 and less than 2.5 mm;
6 percent of stone powder with nominal diameter d less than 0.6 mm;
30% of desulfurized fly ash;
18% of a curing agent;
and 10 percent of water is added externally.
The invention provides a preparation method of the desulfurized fly ash based wall material, which comprises the following specific preparation steps:
(1) adjusting the gradation and the mass ratio of the stone powder;
(2) dry-stirring the adjusted stone powder, desulfurized ash and curing agent for 2-6min according to the weight parts;
(3) adding water according to the weight parts, and wet-stirring for 1-4 min;
(4) and pressing and molding the stirred materials to prepare the wall material.
The invention also provides application of the desulfurized ash based wall material, and the desulfurized ash based wall material is applied to the building industry as a wall material.
Preferably, it is used for preparing standard bricks or hollow bricks.
Further preferred, for the production of 240mm 115mm 53mm standard bricks and 390mm 190mm hollow bricks.
The invention has the beneficial effects that:
1. the components of the desulfurized ash based wall body material mainly comprise the stone powder and the desulfurized ash, so that the solid waste is greatly consumed, and the resource utilization of the waste residues is realized.
2. The invention can effectively reduce the occupation of the large amount of industrial solid wastes such as construction wastes, desulfurized fly ash and the like on the land and the damage to the environment.
3. The invention can effectively save resources, uses solid waste to replace the traditional materials such as stone, sand, cement and the like, further reduces the cost and realizes the recycling of waste.
4. The desulfurized fly ash in the desulfurized fly ash based wall material is essentially sulfite, and has an activation and excitation effect on curing agents, cement clinker and the like.
5. The desulfurized fly ash based wall material has the characteristics of good water resistance, large softening coefficient and the like.
6. The desulfurization ash-based wall material has the advantages of wide raw material source, low cost and simple production process, so the prepared novel wall material has the cost advantage.
Drawings
FIG. 1 is a photograph showing a process for preparing a test block of wall material according to the present invention;
FIG. 2 is a photograph of a finished wall material block of the present invention;
FIG. 3 is a photograph of the wall material test block of the present invention.
Detailed Description
The following detailed description of the invention is provided as illustrative and not restrictive.
Example 1
The mass percentages of all components in the desulfurization ash-based wall material are shown in table 1, wherein the curing agent is SS-W-S type soft soil curing agent. The specific preparation method of the desulfurized fly ash based wall material comprises the following steps: adding the stone powder, the desulfurized ash and the curing agent into a stirrer, stirring for 2min in a dry mode, adding water, stirring for 1.5min in a wet mode, and pressing the stirred materials into cylindrical test blocks with the diameter of phi 5 multiplied by 5 cm. And (3) performing standard maintenance on the molded test block by adopting a normal-temperature natural moisturizing maintenance process, and performing various performance tests when the test block reaches a maintenance age (7d maintenance, 27d maintenance, 1d soaking and 28d maintenance).
Example 2
The curing agent was a SS-W-P type curing agent, and the procedure of example 1 was repeated with the respective component contents specified in Table 1, and the test results are shown in Table 1.
Example 3
The procedure of example 1 was repeated with the component contents specified in Table 1, but 9% of the components having a nominal stone powder diameter of less than 0.6mm and 12% of the curing agent, and the test results are shown in Table 1.
Example 4
The procedure of example 1 was repeated with the amounts of the components specified in Table 1, but 30% desulfurized fly ash, 22% nominal diameter of stone dust of 5. ltoreq. d.ltoreq.10 mm, 6% nominal diameter of stone dust of less than 0.6mm, and 18% curing agent, the results of which are given in Table 1.
Example 5
The procedure of example 1 was repeated with the amounts of the components specified in Table 1, but 15% for those having a nominal stone powder diameter of 5. ltoreq. d.ltoreq.10 mm and 11% for those having a nominal stone powder diameter of less than 0.6mm, the test results being shown in Table 1.
Example 6
The procedure of example 1 was repeated with the amounts of the components specified in Table 1, but 10% curing agent and 11% nominal stone flour diameter of less than 0.6mm, the results of which are given in Table 1.
Comparative example 1
Standard brick a, a commercial wall material, was purchased and the test results are listed in table 1.
Comparative example 2
Standard brick B, a commercial wall material, was purchased and the test results are listed in table 1.
TABLE 1 different mass percentages of combined wall materials and compressive strength results
The compressive strength test data of the examples in table 1 above show that the present invention can provide wall materials having different component mass percentages within the preferred range that meet the performance requirements of the standard bricks, both in terms of single performance and in terms of overall performance. The foregoing embodiments and description have been presented only to illustrate the principles and preferred embodiments of the invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention as hereinafter claimed.
Claims (10)
1. The desulfurization ash-based wall material is characterized by comprising the following components in percentage by mass:
10-35% of stone powder with nominal diameter of 5-10 mm and d-10 mm;
5-30% of stone powder with nominal diameter of 2.5-5 mm and d less than 5 mm;
5-30% of stone powder with nominal diameter of 0.6-2.5 mm and d;
5-25% of stone powder with nominal diameter d less than 0.6 mm;
25-40% of desulfurized ash;
10-25% of a curing agent;
5-25% of water based on the total mass of the stone powder, the desulfurized ash and the curing agent.
2. The desulfurized fly ash based wall material according to claim 1, wherein the stone powder is construction waste recycled aggregate from Guangxi Shenglong metallurgy Co.
3. The desulfurization ash-based wall body material as recited in claim 1, wherein the desulfurization ash is desulfurization ash produced in desulfurization process of sintering flue gas of Guangxi Shenglong metallurgy Limited company.
4. A desulphurisation ash-based wall material according to claim 1 or claim 3 wherein the desulphurisation ash has a water content of less than 2%.
5. The desulfurized ash based wall material according to claim 1, wherein: the water content of the curing agent is less than or equal to 1 percent, the screen allowance of a square-hole screen with the size of 80 mu m is less than or equal to 10 percent, the net slurry fluidity is initially more than or equal to 100mm, 30min is more than or equal to 90mm, 60min is more than or equal to 80mm, and the initial setting time is more than or equal to 45 min.
6. The desulfurized ash based wall material according to claim 1 or 5, wherein: the curing agent is at least one of SS-W-P type curing agent and SS-W-S type soft soil curing agent.
7. The method for preparing a desulfurized ash based wall material according to any one of claims 1 to 6, characterized by comprising the specific preparation steps of:
(1) adjusting the gradation and the mass ratio of the stone powder;
(2) dry-stirring the adjusted stone powder, desulfurized ash and curing agent for 2-6min according to the weight parts;
(3) adding water according to the weight parts, and wet-stirring for 1-4 min;
(4) and pressing and molding the stirred materials to prepare the wall material.
8. Use of the desulphurized ash-based wall material according to any one of claims 1 to 6 for the preparation of a building wall material.
9. The use of the desulfurized ash based wall material according to claim 8 for the preparation of standard or hollow bricks.
10. Use of the desulfurized ash based wall material according to claim 9 for the production of standard bricks 240mm x 115mm x 53mm and hollow bricks 390mm x 190 mm.
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| CN202110152590.XA CN112876146B (en) | 2021-02-03 | 2021-02-03 | Desulfurization ash-based wall material and preparation and application thereof |
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| CN112876146A true CN112876146A (en) | 2021-06-01 |
| CN112876146B CN112876146B (en) | 2023-04-21 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113929371A (en) * | 2021-11-29 | 2022-01-14 | 中冶南方都市环保工程技术股份有限公司 | Full-solid waste baking-free brick prepared from multi-industry solid waste and preparation method thereof |
| CN115107144A (en) * | 2022-08-25 | 2022-09-27 | 杭州余杭环保科技有限公司 | Preparation method of slag soil baking-free brick |
| CN116354659A (en) * | 2023-05-22 | 2023-06-30 | 北京鼎创环保有限公司 | Novel roadbed material and preparation method thereof |
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| CN101973749A (en) * | 2010-10-18 | 2011-02-16 | 武汉凯迪电力股份有限公司 | Non-sintered brick based on flue gas desulfurization byproduct and preparation method thereof |
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2021
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101973749A (en) * | 2010-10-18 | 2011-02-16 | 武汉凯迪电力股份有限公司 | Non-sintered brick based on flue gas desulfurization byproduct and preparation method thereof |
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| 刘洪学: "利用石材加工废弃物生产保温隔热砌块", 《福建建设科技》 * |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113929371A (en) * | 2021-11-29 | 2022-01-14 | 中冶南方都市环保工程技术股份有限公司 | Full-solid waste baking-free brick prepared from multi-industry solid waste and preparation method thereof |
| CN115107144A (en) * | 2022-08-25 | 2022-09-27 | 杭州余杭环保科技有限公司 | Preparation method of slag soil baking-free brick |
| CN116354659A (en) * | 2023-05-22 | 2023-06-30 | 北京鼎创环保有限公司 | Novel roadbed material and preparation method thereof |
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| CN112876146B (en) | 2023-04-21 |
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