CN113173748A - Steel slag desulfurization byproduct solidified sludge-based non-sintered ceramsite and preparation method thereof - Google Patents
Steel slag desulfurization byproduct solidified sludge-based non-sintered ceramsite and preparation method thereof Download PDFInfo
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- CN113173748A CN113173748A CN202110655235.4A CN202110655235A CN113173748A CN 113173748 A CN113173748 A CN 113173748A CN 202110655235 A CN202110655235 A CN 202110655235A CN 113173748 A CN113173748 A CN 113173748A
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- steel slag
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- 239000002893 slag Substances 0.000 title claims abstract description 83
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 72
- 239000010959 steel Substances 0.000 title claims abstract description 72
- 239000006227 byproduct Substances 0.000 title claims abstract description 69
- 239000010802 sludge Substances 0.000 title claims abstract description 59
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 57
- 230000023556 desulfurization Effects 0.000 title claims abstract description 57
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000004568 cement Substances 0.000 claims abstract description 17
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 14
- 239000011707 mineral Substances 0.000 claims abstract description 14
- 239000002270 dispersing agent Substances 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 239000012190 activator Substances 0.000 claims abstract description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 27
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 235000010755 mineral Nutrition 0.000 claims description 12
- 239000004115 Sodium Silicate Substances 0.000 claims description 9
- 239000000292 calcium oxide Substances 0.000 claims description 9
- 235000012255 calcium oxide Nutrition 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 9
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical group [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 9
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 9
- 239000010881 fly ash Substances 0.000 claims description 8
- 239000003638 chemical reducing agent Substances 0.000 claims description 7
- 229920005552 sodium lignosulfonate Polymers 0.000 claims description 7
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 239000005416 organic matter Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 claims 2
- 239000008187 granular material Substances 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000011031 large-scale manufacturing process Methods 0.000 abstract description 2
- 238000003912 environmental pollution Methods 0.000 abstract 1
- 230000005284 excitation Effects 0.000 abstract 1
- 238000002156 mixing Methods 0.000 description 8
- 239000002689 soil Substances 0.000 description 7
- 238000005507 spraying Methods 0.000 description 7
- DGVVJWXRCWCCOD-UHFFFAOYSA-N naphthalene;hydrate Chemical compound O.C1=CC=CC2=CC=CC=C21 DGVVJWXRCWCCOD-UHFFFAOYSA-N 0.000 description 6
- 239000002002 slurry Substances 0.000 description 6
- 238000001238 wet grinding Methods 0.000 description 5
- 229910052602 gypsum Inorganic materials 0.000 description 4
- 239000010440 gypsum Substances 0.000 description 4
- 238000005245 sintering Methods 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000003009 desulfurizing effect Effects 0.000 description 3
- 150000004683 dihydrates Chemical class 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 239000002440 industrial waste Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000007596 consolidation process Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000008239 natural water Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002699 waste material 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
- 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
- C04B28/006—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 mineral polymers, e.g. geopolymers of the Davidovits type
-
- 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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/009—Porous or hollow ceramic granular materials, e.g. microballoons
-
- 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
- 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
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- 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)
- Ceramic Engineering (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Treatment Of Sludge (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
本发明属于生态环境技术领域，公开了一种钢渣脱硫副产物固化淤泥基免烧陶粒及其制备方法。本发明的免烧陶粒由包含以下质量份数的原料制备而成：淤泥35～70份，钢渣脱硫副产物5～30份，水泥10～20份，矿物掺合料5～25份，激发剂1～2份，分散剂0.1～1份。本发明主要以钢渣脱硫副产物作为固化剂，同时协同水泥和矿物掺合料，并辅以激发剂、分散剂等增大对建筑淤泥的固化效果。而且能够实现钢渣脱硫副产物和淤泥大规模生产和工程应用，解决大量钢渣脱硫副产物和淤泥堆放污染环境的问题，具有良好的经济效益和社会效益。The invention belongs to the technical field of ecological environment, and discloses a steel slag desulfurization by-product solidified sludge-based unfired ceramsite and a preparation method thereof. The non-burning ceramsite of the present invention is prepared from raw materials containing the following parts by mass: 35-70 parts of sludge, 5-30 parts of steel slag desulfurization by-products, 10-20 parts of cement, 5-25 parts of mineral admixtures, excitation 1 to 2 parts of agent, 0.1 to 1 part of dispersant. The invention mainly uses the by-product of desulfurization of steel slag as the curing agent, and at the same time cooperates with cement and mineral admixtures, and is supplemented by activators, dispersants, etc. to increase the curing effect of building sludge. Moreover, it can realize large-scale production and engineering application of steel slag desulfurization by-products and sludge, solve the problem of environmental pollution caused by a large number of steel slag desulfurization by-products and sludge, and has good economic and social benefits.
Description
Technical Field
The invention relates to the technical field of ecological environment, in particular to a sludge-based non-sintered ceramsite solidified by steel slag desulfurization byproducts and a preparation method thereof.
Background
With the increasing pace of urban construction, a large amount of sludge such as building residue and building slurry is generated every year in the engineering construction process, and in the Ningbo example, the cleaning and transportation amount of the sludge is about 2670 ten thousand square in 2017, wherein the building residue accounts for about 95% and the building slurry accounts for about 4.5%. The sludge has the characteristics of high water content, low shear strength, high compressibility, high sensitivity, poor water permeability and the like, and has a large number of sticky particles, contains organic matters, is thick in combined water film and weak in inter-particle binding force. These sludges therefore require a consolidation process.
The existing sludge resource utilization is generally carried out by adopting curing agents such as cement, lime and the like for consolidation, and is prepared into non-sintered ceramsite, in order to further reduce the cost or improve the performance, industrial waste residues are also adopted to replace the cement, and a small amount of excitant is added, but the prepared non-sintered ceramsite has the defects of low early strength, easy shrinkage cracking and the like, is mainly suitable for fine-grained soil with high content of sticky grains, and has the problems of strength reduction and the like after being soaked in water, so that the durability of products in application is not strong. The industrial waste residue adopted in the prior art is often common varieties such as fly ash, slag, gypsum and the like, and the application of the industrial waste residue which is difficult to utilize is less.
The steel slag desulfurization byproduct is a solid desulfurization byproduct discharged after sintering flue gas desulfurization by adopting waste steel slag as a desulfurizer, and along with the increasing importance of China on the circular economy and green development of the steel industry, the efficient utilization and deep processing of the steel slag desulfurization byproduct become one of the important problems to be solved urgently in the industry chain. The mineral composition of the steel slag desulfurization by-product is mainly dihydrate gypsum formed by desulfurization reaction, and in addition, the steel slag which is a desulfurizing agent and does not react completely contains C3S、C2S and other active minerals. Although the dihydrate gypsum is contained, the production cost is further increased by separating the dihydrate gypsum for resource utilization, the separation process is complex, and the obtained product also contains other impurity components in the steel slag, so that the application of further purifying the steel slag desulfurization by-products to prepare industrial raw materials is limited. Therefore, how to utilize the desulfurization by-products of the steel slag as a whole resource is a technology which needs to be solved urgently at presentAnd (5) problems are solved.
Disclosure of Invention
The invention aims to provide a steel slag desulphurization byproduct solidified sludge-based non-sintered ceramsite and a preparation method thereof, and solves the problem of resource utilization of sludge and steel slag desulphurization byproducts.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a steel slag desulphurization byproduct solidified sludge-based non-sintered ceramsite which is prepared from the following raw materials in parts by weight: 35-70 parts of sludge, 5-30 parts of steel slag desulphurization by-product, 10-20 parts of cement, 5-25 parts of mineral admixture, 1-2 parts of excitant and 0.1-1 part of dispersing agent.
Preferably, in the steel slag desulfurization byproduct solidified sludge-based non-fired ceramsite, the sludge is building slurry or building residue soil, the water content is 45-85%, and the organic matter content is less than 10%.
Preferably, in the above-mentioned solidified sludge-based non-fired ceramsite containing steel slag desulfurization by-product, the steel slag desulfurization by-product is obtained by absorbing sintering flue gas SO with steel slag powder as a desulfurizing agent2The granularity of the generated by-product is 200-400 meshes, and the content of calcium sulfate is more than 70%.
Preferably, in the above-mentioned non-sintered ceramsite containing solidified sludge base from by-product of steel slag desulfurization, the mineral admixture is one or both of fly ash and slag powder.
Preferably, in the solidified sludge-based non-fired ceramsite containing the steel slag desulfurization byproducts, the excitant is a mixture of sodium silicate, quicklime and sodium hydroxide according to a mass ratio of 1-6: 1-5: 1-4.
Preferably, in the above-mentioned steel slag desulfurization byproduct solidified sludge-based non-sintered ceramsite, the dispersant is one or two of sodium lignosulfonate and naphthalene water reducer.
Preferably, in the sludge-based non-sintered ceramsite solidified by the steel slag desulfurization byproduct, the water-solid ratio of the non-sintered ceramsite is 0.13-0.35.
The invention also provides a preparation method of the solidified sludge-based non-sintered ceramsite containing the steel slag desulfurization by-product, which is characterized by comprising the following steps of:
wet grinding, homogenizing and smoldering the sludge, the steel slag desulfurization byproducts and the mineral admixture, then adding cement, an exciting agent and a dispersing agent, mixing, granulating, balling and maintaining to obtain the steel slag desulfurization byproduct solidified sludge-based non-fired ceramsite.
Through the technical scheme, compared with the prior art, the invention has the following beneficial effects:
(1) compared with the traditional sintering process, the sintering-free ceramsite disclosed by the invention is simple in process, saves a large amount of energy consumption, and is beneficial to large-scale industrial production.
(2) According to the invention, the steel slag desulfurization by-product is mainly used as a curing agent and is cooperated with cement and mineral admixture, the three main components can mutually promote hydration, so that the advantages are complemented, certain activity is provided in the early stage and the later stage, and an activator, a dispersant and the like are supplemented to increase the curing effect on sludge.
(3) The invention can realize large-scale production and engineering application of the steel slag desulfurization by-products and the sludge, solves the problem that a large amount of steel slag desulfurization by-products and sludge are stacked to pollute the environment, and has good economic benefit and social benefit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a steel slag desulphurization byproduct solidified sludge-based non-sintered ceramsite which is prepared from the following raw materials in parts by weight: 35-70 parts of sludge, 5-30 parts of steel slag desulphurization by-product, 10-20 parts of cement, 5-25 parts of mineral admixture, 1-2 parts of excitant and 0.1-1 part of dispersing agent.
Preferably, in the steel slag desulfurization byproduct solidified sludge-based non-fired ceramsite, the sludge is building slurry or building residue soil, the water content is 45-85%, and the organic matter content is less than 10%.
Preferably, in the above-mentioned solidified sludge-based non-fired ceramsite containing steel slag desulfurization by-product, the steel slag desulfurization by-product is obtained by absorbing sintering flue gas SO with steel slag powder as a desulfurizing agent2The granularity of the generated by-product is 200-400 meshes, and the content of calcium sulfate is more than 70%.
Preferably, in the above-mentioned non-sintered ceramsite containing solidified sludge base from by-product of steel slag desulfurization, the mineral admixture is one or two of fly ash and slag powder.
Preferably, in the solidified sludge-based non-fired ceramsite containing the steel slag desulfurization byproducts, the excitant is a mixture of sodium silicate, quicklime and sodium hydroxide according to a mass ratio of 1-6: 1-5: 1-4.
Preferably, in the above-mentioned steel slag desulfurization byproduct solidified sludge-based non-sintered ceramsite, the dispersant is one or two of sodium lignosulfonate and naphthalene water reducer.
Preferably, in the sludge-based non-sintered ceramsite solidified by the steel slag desulfurization byproduct, the water-solid ratio of the non-sintered ceramsite is 0.13-0.35.
The invention also provides a preparation method of the solidified sludge-based non-sintered ceramsite containing the steel slag desulfurization by-product, which is characterized by comprising the following steps of:
wet grinding the sludge, the desulfurization by-products of the steel slag and the mineral admixture until the specific surface area is more than 400cm2Homogenizing, stewing materials for 4-72 h, then adding cement, an activator and a dispersant, mixing, granulating into balls, and curing by adopting water spraying and a covering film for 7-14 d to obtain the steel slag desulfurization byproduct solidified sludge-based non-fired ceramsite.
Example 1
The invention provides a steel slag desulphurization byproduct solidified sludge-based non-sintered ceramsite which is prepared from the following raw materials in parts by weight: 35 parts of building slag soil, 20 parts of steel slag desulfurization byproducts, 10 parts of cement, 15 parts of fly ash, 5 parts of slag powder, 0.5 part of sodium silicate, 0.5 part of quick lime, 0.5 part of sodium hydroxide and 0.6 part of sodium lignosulfonate.
The preparation method comprises the following steps: mixing the building slag soil, the steel slag desulfurization by-product, the fly ash and the slag powder, carrying out wet grinding, homogenizing and material sealing for 4 hours, then adding cement, sodium silicate, quick lime, sodium hydroxide and sodium lignosulfonate, mixing, granulating, carrying out natural water spraying maintenance, spraying water every 12 hours, and maintaining for 7 days to obtain the steel slag desulfurization by-product solidified sludge-based non-fired ceramsite.
The volume weight of the unfired ceramsite prepared by the embodiment is 1000kg/m328d cylinder pressure strength of 4.7MPa and water absorption of 9.5 percent in 1 hour, and meets the requirements of national standard GB/T17431.1-2010 light aggregate and test method thereof.
Example 2
The invention provides a steel slag desulphurization byproduct solidified sludge-based non-sintered ceramsite which is prepared from the following raw materials in parts by weight: 50 parts of building slurry, 10 parts of steel slag desulfurization byproducts, 20 parts of cement, 10 parts of fly ash, 1 part of sodium silicate, 0.8 part of quicklime, 0.2 part of sodium hydroxide and 0.1 part of naphthalene water reducer.
The preparation method comprises the following steps: the preparation method comprises the following steps: mixing the building slurry, the steel slag desulfurization by-product and the fly ash, carrying out wet grinding, homogenizing and material sealing for 24 hours, then adding cement, sodium silicate, quicklime, sodium hydroxide and a naphthalene water reducer, mixing, granulating into balls, carrying out natural water spraying maintenance, spraying water every 12 hours, and maintaining for 10 days to obtain the steel slag desulfurization by-product solidified sludge-based non-fired ceramsite.
The volume weight of the baking-free ceramsite prepared by the embodiment is 950kg/m328d cylinder pressure strength of 4.5MPa and water absorption of 10.3 percent in 1 hour, and meets the requirements of national standard GB/T17431.1-2010 light aggregate and test method thereof.
Example 3
The invention provides a steel slag desulphurization byproduct solidified sludge-based non-sintered ceramsite which is prepared from the following raw materials in parts by weight: 70 parts of building slag soil, 30 parts of steel slag desulphurization by-product, 14 parts of cement, 25 parts of slag powder, 0.6 part of sodium silicate, 0.5 part of quicklime, 0.4 part of sodium hydroxide, 0.4 part of sodium lignosulfonate and 0.2 part of naphthalene water reducer.
The preparation method comprises the following steps: mixing the building slag soil, the steel slag desulphurization byproduct and the slag powder, wet grinding, homogenizing, stuffing for 72h, then adding cement, sodium silicate, quick lime, sodium hydroxide, sodium lignosulfonate and a naphthalene water reducing agent, mixing, granulating into balls, naturally spraying water for curing, spraying water every 12h, and curing for 14d to obtain the steel slag desulphurization byproduct solidified sludge-based non-fired ceramsite.
The volume weight of the unfired ceramsite prepared by the embodiment is 800kg/m328d cylinder pressure strength of 4.2MPa and water absorption of 11.1 percent after 1 hour, and meets the requirements of national standard GB/T17431.1-2010 light aggregate and test method thereof.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
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| CN202110655235.4A CN113173748A (en) | 2021-06-11 | 2021-06-11 | Steel slag desulfurization byproduct solidified sludge-based non-sintered ceramsite and preparation method thereof |
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| CN202110655235.4A CN113173748A (en) | 2021-06-11 | 2021-06-11 | Steel slag desulfurization byproduct solidified sludge-based non-sintered ceramsite and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113387629A (en) * | 2021-07-30 | 2021-09-14 | 宁波工程学院 | Controllable low-strength material utilizing steel slag desulfurization by-products and building muck and preparation method thereof |
| CN115010419A (en) * | 2022-06-30 | 2022-09-06 | 深圳市衡骏环保科技有限公司 | Multi-solid waste sludge-based carbon mineralized non-sintered ceramsite and preparation method thereof |
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| CN102557495A (en) * | 2012-02-27 | 2012-07-11 | 武汉理工大学 | Method for enhancing early strength of steel slag cement |
| CN103553556A (en) * | 2013-10-28 | 2014-02-05 | 山西聚义宝鑫新材料有限公司 | Method for producing building ceramsites by using coal slime, municipal sludge and desulfurized fly ash |
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| CN115010419A (en) * | 2022-06-30 | 2022-09-06 | 深圳市衡骏环保科技有限公司 | Multi-solid waste sludge-based carbon mineralized non-sintered ceramsite and preparation method thereof |
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