CN112824343A - Method for sintering and mixing sludge and building waste soil - Google Patents
Method for sintering and mixing sludge and building waste soil Download PDFInfo
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- CN112824343A CN112824343A CN201911139684.2A CN201911139684A CN112824343A CN 112824343 A CN112824343 A CN 112824343A CN 201911139684 A CN201911139684 A CN 201911139684A CN 112824343 A CN112824343 A CN 112824343A
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- waste soil
- sintering
- construction waste
- sludge
- brick
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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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
-
- 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
- C04B33/1328—Waste materials; Refuse; Residues without additional clay
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/74—Physical characteristics
- C04B2235/77—Density
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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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
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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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/963—Surface properties, e.g. surface roughness
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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
- 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)
- Dispersion Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention relates to the technical field of sintering and mixing, in particular to a method for sintering and mixing sludge and construction waste soil, which comprises the following steps: crushing the building waste soil by a crusher to prepare building waste soil particles; conveying the crushed building waste soil particles into a screening device for screening, and screening out reinforcing steel bars in the building waste soil particles; conveying the sludge and the building waste soil particles into a mixing device, adding water, and stirring and mixing; putting the prepared mixed material into a brick making module to prepare a brick blank; placing the brick blanks into a sintering furnace, and pre-sintering the brick blanks with the same gaps between the brick blanks; the pre-sintered bricks are closely arranged and sintered at high temperature; after cooling, the prepared baked bricks are taken out, the steel bars in the construction waste soil are separated by the screening device and recycled, the construction waste soil and the sludge are mixed to prepare the baked bricks, the construction waste soil and the sludge are reasonably treated, waste utilization is realized, clay solid bricks can be replaced, and clay resources are protected.
Description
Technical Field
The invention relates to the technical field of sintering processing, in particular to a method for sintering and mixing sludge and construction waste soil.
Background
In recent years, social and economic development is rapid, cities are continuously expanded to be constructed, various construction projects are more and more, the generation and discharge amount of construction waste soil in the cities are rapidly increased, the treatment of the construction waste soil is improper, and the urban image is seriously influenced, so that how to effectively treat and utilize more and more construction waste soil and reduce the environmental pressure while the cities are developed becomes an important subject faced by governments and construction waste soil output and treatment units at all levels.
The organic pollutants in the sludge mainly comprise benzene, chlorophenol, polychlorinated biphenyl, polychlorinated dibenzofuran, polychlorinated dibenzodioxin and the like, the organic pollutants in the sludge are not easy to degrade, the toxic residual time is long, the toxic and harmful substances enter water and soil to cause environmental pollution, the sludge and the building waste soil are difficult to treat, and an effective treatment process is not available.
Disclosure of Invention
An object of the present invention is to solve the above-mentioned drawbacks of the background art by proposing a method for sinter-mixing sludge and construction waste.
As a preferred technical scheme of the invention: the method comprises the following steps:
s1, crushing the building waste soil by a jaw crusher to prepare building waste soil particles, and repeatedly crushing for 3-4 times;
s2, conveying the crushed construction waste soil particles into a screening device, electromagnetically screening reinforcing steel bars in the construction waste soil particles for 3 times, and screening the rest construction waste soil particles through a 100-mesh screen;
s3, conveying the sludge and the building waste soil particles into an anchor type mixing stirrer, adding water, and mixing and stirring at the average stirring speed of 1200 rpm;
s4, stirring for 2-3 h, and manually putting the mixed material prepared in the step S3 into a brick making module to prepare a brick blank;
s5, manually measuring the same gap of the brick blank, and placing the brick blank into a sintering furnace for pre-sintering;
s6, closely arranging the pre-sintered bricks, and sintering at high temperature;
and S7, cooling, and taking out the baked brick prepared in the S6.
As a preferred technical scheme of the invention: the sintering temperature in the step S5 is between 400 and 600 ℃, and the sintering time is 0.5 to 1 hour.
As a preferred technical scheme of the invention: the sintering temperature in the step S6 is between 800 ℃ and 1300 ℃, and the sintering time is 3 to 7 hours.
As a preferred technical scheme of the invention: the sludge and the construction waste soil in the mixed material respectively account for 50 percent of the total content, and the water accounts for 4 percent of the total content.
As a preferred technical scheme of the invention: the gap is 15cm and needs to be measured manually with a ruler.
As a preferred technical scheme of the invention: the screening device is an electromagnetic vibrating screen.
The invention has the beneficial effects that:
1. the invention separates the reinforcing steel bars in the building waste soil through the electromagnetic vibrating screen, recycles the reinforcing steel bars, mixes the building waste soil and the sludge to prepare the baked bricks, reasonably treats the building waste soil and the sludge, realizes waste utilization, simultaneously can replace clay solid bricks, and protects clay resources.
Drawings
Fig. 1 is an overall flow diagram of a preferred embodiment of the present invention.
Detailed Description
It should be noted that, in the present application, features of embodiments and embodiments may be combined with each other without conflict, and technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. 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.
Example 1
Referring to fig. 1, a preferred embodiment of the present invention provides a method for sintering and mixing sludge and construction waste soil, comprising the following steps:
s1, crushing the building waste soil by a jaw crusher to prepare building waste soil particles, and repeatedly crushing for 3-4 times;
s2, conveying the crushed construction waste soil particles into a screening device, electromagnetically screening reinforcing steel bars in the construction waste soil particles for 3 times, and screening the rest construction waste soil particles through a 100-mesh screen;
s3, conveying the sludge and the building waste soil particles into an anchor type mixing stirrer, adding water, and mixing and stirring at the average stirring speed of 1200 rpm;
s4, stirring for 2-3 h, and manually putting the mixed material prepared in the step S3 into a brick making module to prepare a brick blank;
s5, manually measuring the same gap of the brick blank, and placing the brick blank into a sintering furnace for pre-sintering;
s6, closely arranging the pre-sintered bricks, and sintering at high temperature;
and S7, cooling, and taking out the baked brick prepared in the S6. In this embodiment, the sintering temperature in the step S5 is 400 ℃ to 600 ℃, and the sintering time is 0.5 to 1 hour.
In addition, the sintering temperature in the step S6 is between 800 ℃ and 1300 ℃, and the sintering time is 3 to 7 hours.
Further, the sludge and the construction waste soil in the mixed material respectively account for 50 percent of the total content, and the water accounts for 4 percent of the total content.
In addition, the clearance is 15cm, and need reduce the adobe bonding condition through artifical with the ruler measurement, has guaranteed the smoothness degree on baked brick surface, makes the baked brick surface of making more level and more smooth pleasing to the eye.
Furthermore, the screening device is an electromagnetic vibrating screen, and steel bars in the building waste soil particles are adsorbed by the electromagnetic action and recycled.
The baked brick prepared by the mixed preparation method in the embodiment separates the reinforcing steel bars in the building waste soil through the electromagnetic vibration sieve, is convenient to recycle, and the construction waste soil and the sludge are mixed to prepare the baked brick, so that the construction waste soil and the sludge are reasonably treated, the waste utilization is realized, meanwhile, the brick blank can replace clay solid bricks, clay resources are protected, the brick blank is placed into a sintering furnace for pre-sintering through manually measuring the same gap, the occurrence of the bonding condition of the brick blank is reduced, the smoothness of the surface of the sintered brick is ensured, the manufactured sintered brick is smooth and attractive, and after pre-sintering, the pre-sintered bricks are closely arranged and sintered at high temperature, the internal space of a sintering furnace is reasonably distributed, the building waste soil is repeatedly crushed for 3 to 4 times by a jaw crusher, and then the building waste soil is filtered by a 100-mesh sieve and is stirred and mixed with sludge, so that the hardness and compactness of the sintered bricks are higher.
Example 2
The preferred embodiment of the invention provides a method for sintering and mixing sludge and construction waste soil, which comprises the following steps:
s1, crushing the building waste soil by a jaw crusher to prepare building waste soil particles, and repeatedly crushing for 3-4 times;
s2, conveying the crushed construction waste soil particles into a screening device, electromagnetically screening reinforcing steel bars in the construction waste soil particles for 3 times, and screening the rest construction waste soil particles through a 100-mesh screen;
s3, conveying the sludge and the building waste soil particles into an anchor type mixing stirrer, adding water, and mixing and stirring at the average stirring speed of 1500 rpm;
s4, stirring for 2-3 h, and manually putting the mixed material prepared in the step S3 into a brick making module to prepare a brick blank;
s5, placing the brick blank into a sintering furnace for high-temperature sintering;
and S6, cooling, and taking out the baked brick prepared in the S5.
The sintered brick prepared by the mixed preparation method in the embodiment increases the stirring speed, cancels the pre-sintering step, accelerates the brick making speed, obviously improves the compactness of the sintered brick, reduces the hardness of the sintered brick, but greatly reduces the integrity of the sintered brick and the surface smoothness of the sintered brick.
Example 3
The preferred embodiment of the invention provides a method for sintering and mixing sludge and construction waste soil, which comprises the following steps:
s1, crushing the building waste soil by a jaw crusher to prepare building waste soil particles, and repeatedly crushing for 3-4 times;
s2, conveying the crushed construction waste soil particles into a screening device, electromagnetically screening reinforcing steel bars in the construction waste soil particles for 3 times, and screening the rest construction waste soil particles through a 100-mesh screen;
s3, conveying the sludge and the building waste soil particles into an anchor type mixing stirrer, adding water, and mixing and stirring at the average stirring speed of 1200 rpm;
s4, stirring for 2-3 h, and manually putting the mixed material prepared in the step S3 into a brick making module to prepare a brick blank;
s5, manually measuring the same gap of the brick blank, and placing the brick blank into a sintering furnace for pre-sintering;
s6, after sintering for 0.5h, raising the internal temperature of the sintering furnace to 1300 ℃, and performing high-temperature sintering;
and S7, cooling, and taking out the baked brick prepared in the S6.
The sintered brick prepared by the mixed preparation method in the embodiment reduces the pre-sintering time, increases the sintering temperature, does not change the gap of the pre-sintered brick after the pre-sintering is finished, accelerates the brick making speed, obviously improves the compactness of the sintered brick, reduces the integrity of the sintered brick, but greatly reduces the hardness of the sintered brick and the surface smoothness of the sintered brick.
The method for mixing and sintering sludge and construction waste soil prepared by the proportioning and preparation methods described in the examples 1-3 selects three groups of the baked bricks prepared in each example, tests are carried out on the aspects of the hardness of the baked bricks, the integrity of the baked bricks, the surface smoothness of the baked bricks, the compactness of the baked bricks and the like, and the results are evaluated by A, B, C, D, and are shown in the following table:
| integrity of sintered brick | Surface smoothness of sintered brick | Hardness of sintered brick | Compactness of baked brick | |
| Example 1 | A | A | A | A |
| Example 2 | C | B | B | A |
| Example 3 | B | C | A | C |
As can be seen from the table, the sintered brick prepared by the preparation method in example 1 has a more significant degree of integrity and improved surface smoothness; the hardness improvement effect of the baked brick is obvious, the compactness of the baked brick is obvious, and the baked brick prepared by the preparation method in the embodiment 2 is obvious in the compactness of the baked brick; the hardness of the sintered brick prepared by the preparation method in the embodiment 3 is obviously improved, and the summary shows that the effect of the sludge and construction waste soil sintering and mixing method in the embodiment 1 is obvious.
The invention has the beneficial effects that: the invention separates the reinforcing steel bars in the building waste soil through the electromagnetic vibrating screen, recycles the reinforcing steel bars, mixes the building waste soil and the sludge to prepare the baked bricks, reasonably treats the building waste soil and the sludge, realizes waste utilization, simultaneously can replace clay solid bricks, and protects clay resources.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. A method for sintering and mixing sludge and construction waste soil is characterized by comprising the following steps: the method comprises the following steps:
s1, crushing the building waste soil by a jaw crusher to prepare building waste soil particles, and repeatedly crushing for 3-4 times;
s2, conveying the crushed construction waste soil particles into a screening device, electromagnetically screening reinforcing steel bars in the construction waste soil particles for 3 times, and screening the rest construction waste soil particles through a 100-mesh screen;
s3, conveying the sludge and the building waste soil particles into an anchor type mixing stirrer, adding water, and mixing and stirring at the average stirring speed of 1200 rpm;
s4, stirring for 2-3 h, and manually putting the mixed material prepared in the step S3 into a brick making module to prepare a brick blank;
s5, manually measuring the same gap of the brick blank, and placing the brick blank into a sintering furnace for pre-sintering;
s6, closely arranging the pre-sintered bricks, and sintering at high temperature;
and S7, cooling, and taking out the baked brick prepared in the S6.
2. The method for sintering and mixing sludge and construction waste soil according to claim 1, wherein the method comprises the following steps: the sintering temperature in the step S5 is between 400 and 600 ℃, and the sintering time is 0.5 to 1 hour.
3. The method for sintering and mixing sludge and construction waste soil according to claim 1, wherein the method comprises the following steps: the sintering temperature in the step S6 is between 800 ℃ and 1300 ℃, and the sintering time is 3 to 7 hours.
4. The method for sintering and mixing sludge and construction waste soil according to claim 1, wherein the method comprises the following steps: the sludge and the construction waste soil in the mixed material respectively account for 48 percent of the total content, and the water accounts for 4 percent of the total content.
5. The method for sintering and mixing sludge and construction waste soil according to claim 1, wherein the method comprises the following steps: the gap is 15cm and needs to be measured manually with a ruler.
6. The method for sintering and mixing sludge and construction waste soil according to claim 1, wherein the method comprises the following steps: the screening device is an electromagnetic vibrating screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911139684.2A CN112824343A (en) | 2019-11-20 | 2019-11-20 | Method for sintering and mixing sludge and building waste soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911139684.2A CN112824343A (en) | 2019-11-20 | 2019-11-20 | Method for sintering and mixing sludge and building waste soil |
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| Publication Number | Publication Date |
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| CN112824343A true CN112824343A (en) | 2021-05-21 |
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| CN201911139684.2A Pending CN112824343A (en) | 2019-11-20 | 2019-11-20 | Method for sintering and mixing sludge and building waste soil |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113979724A (en) * | 2021-10-28 | 2022-01-28 | 青岛农业大学 | Sintered brick and preparation method and application thereof |
| CN115301714A (en) * | 2022-08-11 | 2022-11-08 | 徐州振丰新型墙体材料有限公司 | Method for making brick by harmless sintering of polluted soil |
-
2019
- 2019-11-20 CN CN201911139684.2A patent/CN112824343A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113979724A (en) * | 2021-10-28 | 2022-01-28 | 青岛农业大学 | Sintered brick and preparation method and application thereof |
| CN115301714A (en) * | 2022-08-11 | 2022-11-08 | 徐州振丰新型墙体材料有限公司 | Method for making brick by harmless sintering of polluted soil |
| CN115301714B (en) * | 2022-08-11 | 2023-12-01 | 徐州振丰新型墙体材料有限公司 | Method for making bricks by harmless sintering of polluted soil |
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Application publication date: 20210521 |