CN113003970A - Oil sludge ceramsite light aggregate and preparation method thereof - Google Patents
Oil sludge ceramsite light aggregate and preparation method thereof Download PDFInfo
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- CN113003970A CN113003970A CN202110264401.8A CN202110264401A CN113003970A CN 113003970 A CN113003970 A CN 113003970A CN 202110264401 A CN202110264401 A CN 202110264401A CN 113003970 A CN113003970 A CN 113003970A
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- 239000010802 sludge Substances 0.000 title claims abstract description 86
- 238000002360 preparation method Methods 0.000 title abstract description 24
- 239000000843 powder Substances 0.000 claims abstract description 42
- 238000002156 mixing Methods 0.000 claims abstract description 41
- 239000000203 mixture Substances 0.000 claims abstract description 39
- 239000002699 waste material Substances 0.000 claims abstract description 36
- 238000000034 method Methods 0.000 claims abstract description 23
- 238000001035 drying Methods 0.000 claims abstract description 21
- 239000002994 raw material Substances 0.000 claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 238000010276 construction Methods 0.000 claims abstract description 15
- 239000002245 particle Substances 0.000 claims abstract description 15
- 238000005469 granulation Methods 0.000 claims abstract description 12
- 230000003179 granulation Effects 0.000 claims abstract description 12
- 239000002002 slurry Substances 0.000 claims abstract description 12
- 238000003756 stirring Methods 0.000 claims abstract description 12
- 239000010881 fly ash Substances 0.000 claims abstract description 11
- 239000003245 coal Substances 0.000 claims abstract description 10
- 238000001816 cooling Methods 0.000 claims abstract description 8
- 238000000227 grinding Methods 0.000 claims abstract description 6
- 239000002689 soil Substances 0.000 claims abstract description 6
- 239000010883 coal ash Substances 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 239000004567 concrete Substances 0.000 claims description 7
- 239000011449 brick Substances 0.000 claims description 6
- 239000010426 asphalt Substances 0.000 claims description 5
- 239000010865 sewage Substances 0.000 claims description 3
- 230000000052 comparative effect Effects 0.000 description 20
- 238000010998 test method Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000010413 gardening Methods 0.000 description 1
- 239000004574 high-performance concrete Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005067 remediation Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
- C04B38/063—Preparing or treating the raw materials individually or as batches
- C04B38/0635—Compounding ingredients
- C04B38/0645—Burnable, meltable, sublimable materials
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
- C04B18/027—Lightweight materials
-
- 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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
-
- 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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/1321—Waste slurries, e.g. harbour sludge, industrial muds
-
- 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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/1324—Recycled material, e.g. tile dust, stone waste, spent refractory material
-
- 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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/135—Combustion residues, e.g. fly ash, incineration waste
- C04B33/1352—Fuel ashes, e.g. fly ash
-
- 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
-
- 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
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Dispersion Chemistry (AREA)
- Civil Engineering (AREA)
- Combustion & Propulsion (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention provides a preparation method of oil sludge ceramsite lightweight aggregate, which comprises the following steps: s1, mixing the oil sludge and the activated sludge, adding fly ash in the mixing process, and mixing the obtained mixture according to the weight ratio of 1: 3, dividing the mixture into a pug I and a pug II; s2, mixing the construction waste and the coal gangue, crushing and grinding the mixture until the particle size is 0.2-0.5 mm, then mixing the waste soil and the coal ash into the mixture, stirring the mixture evenly, and drying the mixture at 90-100 ℃; s3, mixing the first dry powder into the second pug to form slurry, and introducing the slurry, the second dry powder and the first pug into a turbulent mixer together for stirring; s4, introducing the powder obtained in the step S3 into a disc granulator for granulation, gradually adding dry powder III in the granulation process, and granulating to obtain raw material balls; and S5, heating and roasting the raw material balls, and cooling to room temperature to obtain the oil sludge ceramsite light aggregate. The using amount of the oil sludge is about 20 wt%, and a large amount of oil sludge can be consumed, so that harmless treatment of the oil sludge is effectively realized.
Description
Technical Field
The invention relates to the technical field of novel lightweight aggregate and preparation thereof, in particular to oil sludge ceramsite lightweight aggregate and a preparation method thereof.
Background
The oil sludge is one of important pollutants generated in the oil field development, storage and transportation processes, and is of great importance in harmless treatment of the oil sludge.
The oil sludge can be used as building materials, such as light aggregate, and can play a role in consuming the oil sludge. The ceramsite is one of light aggregates and has wide application prospect, and the ceramsite in the prior art is generally prepared by taking slag, fly ash and the like as raw materials through the processes of mixing, granulating, pre-drying, roasting and the like. Because the oil sludge contains certain petroleum, the existing ceramsite preparation process cannot be suitable for producing ceramsite containing oil sludge.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the oil sludge ceramsite light aggregate, which solves the problem that the ceramsite production process in the prior art is not suitable for preparing oil sludge.
According to the embodiment of the invention, the invention provides oil sludge ceramsite light aggregate which is spherical and has a particle size of 10-20 mm, and the oil sludge ceramsite light aggregate comprises 30-40 parts by weight of construction waste, 10-15 parts by weight of coal gangue, 10-15 parts by weight of waste soil, 5-10 parts by weight of fly ash and 20-25 parts by weight of oil sludge.
Further, the fly ash-free activated sludge fly ash-free cleaning agent also comprises 5-10 parts by weight of activated sludge and 1-5 parts by weight of fly ash.
Further, the construction waste comprises the following components in percentage by weight of 1: 2: 2, concrete waste residue, asphalt waste residue and brick waste residue.
Further, the activated sludge is obtained by treating urban sewage.
In order to solve the preparation problem of the oil sludge ceramsite light aggregate, according to the embodiment of the invention, the invention also provides a preparation method of the oil sludge ceramsite light aggregate, which comprises the following steps:
s1, mixing the oil sludge and the activated sludge, adding fly ash in the mixing process, and mixing the obtained mixture according to the weight ratio of 1: 3, dividing the mixture into a pug I and a pug II;
s2, mixing the construction waste and the coal gangue, crushing and grinding the mixture to a particle size of 0.2-0.5 mm, then mixing the waste soil and the coal ash into the mixture, stirring the mixture uniformly, sending the mixture to a temperature of 90-100 ℃ for drying, and drying the mixture according to a weight ratio of 1: 2: 4, dividing into a first dry powder, a second dry powder and a third dry powder;
s3, mixing the first dry powder into the second pug to form slurry, and introducing the slurry, the second dry powder and the first pug into a turbulent mixer together for stirring;
s4, introducing the powder obtained in the step S3 into a disc granulator for granulation, gradually adding dry powder III in the granulation process, and granulating to obtain raw material balls;
and S5, heating and roasting the raw material balls, and cooling to room temperature to obtain the oil sludge ceramsite light aggregate.
Further, the water content of the mixture obtained in S1 is 60-65 wt%.
Further, the water content of the dried product in S2 is 2-5 wt%.
Furthermore, the particle size of the raw material balls in the S4 is 8-15 mm.
Further, the temperature-rising roasting process in S5 is as follows:
drying at 110-120 ℃ until the water content is less than or equal to 2 wt%, heating to 400-500 ℃ for 6-9 min, and continuously heating to 1000-1250 ℃ for 9-12 min.
Further, the oil content of the oil sludge is 30-45 wt%.
Compared with the prior art, the invention has the following beneficial effects:
the use amount of the oil sludge is about 20 wt%, a large amount of oil sludge can be consumed, so that harmless treatment of the oil sludge is effectively realized, the obtained ceramsite has the characteristic of high strength, the cylinder pressure strength is more than 16Mpa, the ceramsite is superior to a lightweight aggregate product of the national standard GBT17431.1-2010 light aggregate and test method thereof, and the ceramsite can be applied to the fields of bridges, highway pavements, high-speed rails, high-performance concrete, assembly type buildings, sponge cities, underground pipe galleries, hydraulic engineering, soil remediation, water treatment, industrial wear-resistant materials and the like instead of traditional gravels;
the oil sludge ceramsite light aggregate obtained by the method has the characteristics of light weight, fire prevention, heat insulation, sound insulation, heat preservation and the like, and other waste materials are utilized, so the aggregate has the advantages of low price, high quality, environmental protection and the like, can be widely applied to prefabricated wall boards, partition walls, light concrete, roof heat preservation, concrete prefabricated members, small-sized light building blocks, bricks and the like, and can also be applied to the fields of gardening, flowers, municipal and soilless culture and the like.
Drawings
FIG. 1 is a photograph of a product obtained in example 2 of the present invention.
Detailed Description
The technical solution of the present invention is further explained with reference to the drawings and the embodiments.
Example 1
The embodiment provides a preparation method of oil sludge ceramsite lightweight aggregate, which comprises the following steps:
s1, mixing the concrete waste residue, the asphalt waste residue and the brick waste residue according to the weight ratio of 1: 2: 2, mixing to form construction waste, mixing 30kg of construction waste with 10kg of coal gangue, then sending the mixture into a ball mill for grinding until the particle size of the mixture is 0.2mm, then sending the mixture into a drying box for drying at 90 ℃, drying until the moisture content is 2 wt%, and mixing the construction waste with the coal gangue according to the weight ratio of 1: 2: 4, dividing the powder into a first dry powder, a second dry powder and a third dry powder by weight;
s2, mixing 20kg of oil sludge (oil content is 45 wt%) and 5kg of activated sludge (water content is 55%), adding 1kg of fly ash in the process, stirring for 15min under the condition of 500r/mim to realize mixing, and mixing the mixture according to the weight ratio of 1: 3, dividing the mixture into a first pug and a second pug by weight, wherein the water content of the first pug and the second pug is 60 wt%;
s3, mixing the first dry powder into the second pug to form slurry, and introducing the slurry, the second dry powder and the first pug into a turbulent mixer together for stirring;
s4, introducing the powder obtained in the step S3 into a disc granulator for granulation, gradually adding dry powder III in the granulation process, and granulating to obtain raw material balls with the particle size of 8 mm;
s5, drying the raw material balls at 110 ℃ to ensure that the water content is less than or equal to 2 wt%, then heating to 500 ℃ for 6min, continuing heating to 1000 ℃ for 12min, and then naturally cooling to room temperature to obtain the oil sludge ceramsite light aggregate.
Example 2
The embodiment provides a preparation method of oil sludge ceramsite lightweight aggregate, which comprises the following steps:
s1, mixing the concrete waste residue, the asphalt waste residue and the brick waste residue according to the weight ratio of 1: 2: 2 to form construction waste, mixing 40kg of construction waste with 12.5kg of coal gangue, then sending the mixture into a ball mill to carry out grinding treatment until the particle size of the mixture is 0.3mm, then sending the mixture into a drying oven to be dried at 95 ℃, drying until the moisture content is 2 wt%, and mixing the construction waste with the coal gangue according to the weight ratio of 1: 2: 4, dividing the powder into a first dry powder, a second dry powder and a third dry powder by weight;
s2, mixing 23kg of oil sludge (oil content of 38 wt%) and 7.5kg of activated sludge (water content of 52%), adding 3kg of fly ash in the process, stirring for 18min under the condition of 600r/mim to realize mixing, and mixing the mixture according to the weight ratio of 1: 3, dividing the mixture into a first pug and a second pug by weight, wherein the water content of the first pug and the second pug is 63 wt%;
s3, mixing the first dry powder into the second pug to form slurry, and introducing the slurry, the second dry powder and the first pug into a turbulent mixer together for stirring;
s4, introducing the powder obtained in the step S3 into a disc granulator for granulation, gradually adding dry powder III in the granulation process, and granulating to obtain raw material balls with the particle size of 12 mm;
s5, drying the raw material balls at 115 ℃ to ensure that the water content is less than or equal to 2 wt%, then heating to 450 ℃ and keeping for 7.5min, continuing heating to 1150 ℃ and keeping for 10.5min, and then naturally cooling to room temperature to obtain the oil sludge ceramsite light aggregate.
Example 3
The embodiment provides a preparation method of oil sludge ceramsite lightweight aggregate, which comprises the following steps:
s1, mixing the concrete waste residue, the asphalt waste residue and the brick waste residue according to the weight ratio of 1: 2: 2 to form construction waste, mixing 40kg of construction waste with 15kg of coal gangue, then sending the mixture into a ball mill to carry out grinding treatment until the particle size of the mixture is 0.5mm, then sending the mixture into a drying oven to be dried at 100 ℃, drying until the moisture content is 2 wt%, and mixing the materials according to the weight ratio of 1: 2: 4, dividing the powder into a first dry powder, a second dry powder and a third dry powder by weight;
s2, mixing 25kg of oil sludge (with oil content of 30 wt%) and 10kg of activated sludge (with water content of 50 wt%), adding 5kg of fly ash in the process, stirring for 20min under the condition of 400r/mim to realize mixing, and mixing the mixture according to the weight ratio of 1: 3 weight percent of the mixture is divided into a first pug and a second pug, wherein the water content of the first pug and the second pug is 65 weight percent;
s3, mixing the first dry powder into the second pug to form slurry, and introducing the slurry, the second dry powder and the first pug into a turbulent mixer together for stirring;
s4, introducing the powder obtained in the step S3 into a disc granulator for granulation, gradually adding dry powder III in the granulation process, and granulating to obtain raw material balls with the particle size of 15 mm;
s5, drying the raw material balls at 120 ℃ to ensure that the water content is less than or equal to 2 wt%, then heating to 400 ℃ for 9min, continuing heating to 1250 ℃ for 9min, and then naturally cooling to room temperature to obtain the oil sludge ceramsite light aggregate.
Comparative example 1
The embodiment provides a preparation method of oil sludge ceramsite light aggregate, which is the same as the embodiment 1 except for the following contents, and specifically comprises the following steps:
the amount of sludge in S2 was 18 kg.
Comparative example 2
The embodiment provides a preparation method of oil sludge ceramsite light aggregate, which is the same as the embodiment 1 except for the following contents, and specifically comprises the following steps:
the amount of sludge in S2 was 28 kg.
Comparative example 3
The embodiment provides a preparation method of oil sludge ceramsite light aggregate, which is the same as the embodiment 1 except for the following contents, and specifically comprises the following steps:
the oil content of the oil sludge in S2 was 28 wt%.
Comparative example 4
The embodiment provides a preparation method of oil sludge ceramsite light aggregate, which is the same as the embodiment 1 except for the following contents, and specifically comprises the following steps:
the oil content of the oil sludge in S2 was 48 wt%.
Comparative example 5
The embodiment provides a preparation method of oil sludge ceramsite light aggregate, which is the same as the embodiment 1 except for the following contents, and specifically comprises the following steps:
the particle size of the raw material balls in S4 is 5 mm.
Comparative example 6
The embodiment provides a preparation method of oil sludge ceramsite light aggregate, which is the same as the embodiment 1 except for the following contents, and specifically comprises the following steps:
the particle size of the raw material balls in S4 is 18 mm.
Comparative example 7
The embodiment provides a preparation method of oil sludge ceramsite light aggregate, which is the same as the embodiment 1 except for the following contents, and specifically comprises the following steps:
s5, the water content of the mixture was adjusted to 2.5 wt%.
Comparative example 8
The embodiment provides a preparation method of oil sludge ceramsite light aggregate, which is the same as the embodiment 1 except for the following contents, and specifically comprises the following steps:
s5, the water content of the mixture was adjusted to 3.5 wt%.
Comparative example 9
The embodiment provides a preparation method of oil sludge ceramsite light aggregate, which is the same as the embodiment 1 except for the following contents, and specifically comprises the following steps:
s5, drying the raw material balls at 100 ℃ to ensure that the water content is less than or equal to 2 wt%.
Comparative example 10
The embodiment provides a preparation method of oil sludge ceramsite light aggregate, which is the same as the embodiment 1 except for the following contents, and specifically comprises the following steps:
s5, drying the raw material balls at 110 ℃ to ensure that the water content is less than or equal to 2 wt%, then heating to 500 ℃ for 6min, continuing heating to 1000 ℃ for 12min, and then naturally cooling to room temperature to obtain the oil sludge ceramsite light aggregate.
Comparative example 11
The embodiment provides a preparation method of oil sludge ceramsite lightweight aggregate, which is the same as the comparative example 10 except that the following contents are contained in the following steps:
the temperature is continuously increased to 1000 ℃ and kept for 15 min.
Comparative example 12
The embodiment provides a preparation method of oil sludge ceramsite light aggregate, which is the same as the embodiment 3 except for the following contents, and specifically comprises the following steps:
s5, drying the raw material balls at 120 ℃ to ensure that the water content is less than or equal to 2 wt%, then heating to 400 ℃ for 9min, continuing heating to 1300 ℃ for 9min, and then naturally cooling to room temperature to obtain the oil sludge ceramsite light aggregate.
Comparative example 13
The embodiment provides a preparation method of oil sludge ceramsite light aggregate, which is the same as the comparative example 12 except that the following contents are contained in the following steps:
the temperature is increased to 1300 ℃ and kept for 7 min.
The activated sludge used in the above examples and comparative examples was obtained by treating municipal sewage.
Referring to the lightweight aggregate and the test method part 2 of GB/T17432.2-2010, the lightweight aggregate of the oil sludge ceramsite obtained in the above examples 1 to 3 and comparative examples 1 to 13 is: test method for lightweight aggregate test the results are given in the following table:
the strength parameters of the oil sludge ceramsite light aggregate obtained in the above examples and the comparative examples all meet the national standard, but the shapes of the comparative examples 2, 3, 4, 7, 8, 9, 12 and 13 have defects, and the strength parameters and the shapes of the oil sludge ceramsite light aggregate obtained in the examples 1 to 3 are superior to those of the comparative examples, so that the oil sludge ceramsite light aggregate provided by the invention has the best shapes and the best strength parameters, and is superior to other light aggregate products of the national standard GBT17431.1-2010 'light aggregate and test method thereof'.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (10)
1. The oil sludge ceramsite light aggregate is characterized by being spherical and having a particle size of 10-20 mm, and comprising 30-40 parts by weight of construction waste, 10-15 parts by weight of coal gangue, 10-15 parts by weight of waste soil, 5-10 parts by weight of fly ash and 20-25 parts by weight of oil sludge.
2. The oil sludge ceramsite light aggregate according to claim 1, further comprising 5-10 parts by weight of activated sludge and 1-5 parts by weight of fly ash.
3. The oil sludge ceramsite light aggregate as claimed in claim 2, wherein the construction waste comprises the following components in a weight ratio of 1: 2: 2, concrete waste residue, asphalt waste residue and brick waste residue.
4. The ceramsite lightweight aggregate as set forth in claim 3, wherein said activated sludge is obtained by treating municipal sewage.
5. The method for preparing the oil sludge ceramsite light aggregate as claimed in claim 4, is characterized by comprising the following steps of:
s1, mixing the oil sludge and the activated sludge, adding fly ash in the mixing process, and mixing the obtained mixture according to the weight ratio of 1: 3, dividing the mixture into a pug I and a pug II;
s2, mixing the construction waste and the coal gangue, crushing and grinding the mixture to a particle size of 0.2-0.5 mm, then mixing the waste soil and the coal ash into the mixture, stirring the mixture uniformly, sending the mixture to a temperature of 90-100 ℃ for drying, and drying the mixture according to a weight ratio of 1: 2: 4, dividing into a first dry powder, a second dry powder and a third dry powder;
s3, mixing the first dry powder into the second pug to form slurry, and introducing the slurry, the second dry powder and the first pug into a turbulent mixer together for stirring;
s4, introducing the powder obtained in the step S3 into a disc granulator for granulation, gradually adding dry powder III in the granulation process, and granulating to obtain raw material balls;
and S5, heating and roasting the raw material balls, and cooling to room temperature to obtain the oil sludge ceramsite light aggregate.
6. The method for preparing the oil sludge ceramsite lightweight aggregate as claimed in claim 5, wherein the water content of the mixture obtained in S1 is 60-65 wt%.
7. The method for preparing the oil sludge ceramsite lightweight aggregate as claimed in claim 5, wherein the water content of the dried product in S2 is 2-5 wt%.
8. The method for preparing the oil sludge ceramsite light aggregate as claimed in claim 5, wherein the particle size of the raw material balls in the S4 is 8-15 mm.
9. The method for preparing the oil sludge ceramsite lightweight aggregate as claimed in claim 5, wherein the heating roasting process in S5 is as follows:
drying at 110-120 ℃ until the water content is less than or equal to 2 wt%, heating to 400-500 ℃ for 6-9 min, and continuously heating to 1000-1250 ℃ for 9-12 min.
10. The method for preparing the oil sludge ceramsite lightweight aggregate according to claim 5, wherein the oil content of the oil sludge is 30-45 wt%.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115504767A (en) * | 2022-10-26 | 2022-12-23 | 定边县冠博环保科技有限公司 | Acoustic board prepared from oily sludge and manufacturing method thereof |
| CN117466621A (en) * | 2023-12-28 | 2024-01-30 | 西南石油大学 | Hollow ultra-light ceramsite based on oil-based rock debris and preparation method thereof |
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| CN109851323A (en) * | 2018-12-29 | 2019-06-07 | 武汉理工大学 | A kind of haydite and preparation method thereof using the preparation of oily sludge Thermal desorption residue |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115504767A (en) * | 2022-10-26 | 2022-12-23 | 定边县冠博环保科技有限公司 | Acoustic board prepared from oily sludge and manufacturing method thereof |
| CN115504767B (en) * | 2022-10-26 | 2024-06-18 | 定边县冠博环保科技有限公司 | Sound-absorbing board prepared from oily sludge and manufacturing method thereof |
| CN117466621A (en) * | 2023-12-28 | 2024-01-30 | 西南石油大学 | Hollow ultra-light ceramsite based on oil-based rock debris and preparation method thereof |
| CN117466621B (en) * | 2023-12-28 | 2024-03-08 | 西南石油大学 | Hollow ultra-light ceramsite based on oil-based rock debris and preparation method thereof |
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