CN111072371A - Ceramsite prepared by taking industrial waste as main raw material and preparation method thereof - Google Patents
Ceramsite prepared by taking industrial waste as main raw material and preparation method thereof Download PDFInfo
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- CN111072371A CN111072371A CN201811227465.5A CN201811227465A CN111072371A CN 111072371 A CN111072371 A CN 111072371A CN 201811227465 A CN201811227465 A CN 201811227465A CN 111072371 A CN111072371 A CN 111072371A
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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
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- 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
- C04B33/131—Inorganic additives
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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
- C04B33/1324—Recycled material, e.g. tile dust, stone waste, spent refractory material
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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
- C04B33/135—Combustion residues, e.g. fly ash, incineration waste
- C04B33/1352—Fuel ashes, e.g. fly ash
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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
- C04B33/135—Combustion residues, e.g. fly ash, incineration waste
- C04B33/1355—Incineration residues
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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
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
- C04B2235/442—Carbonates
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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
- C04B2235/74—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
- C04B2235/95—Products characterised by their size, e.g. microceramics
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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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- 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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- Ceramic Engineering (AREA)
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- Environmental & Geological Engineering (AREA)
- Combustion & Propulsion (AREA)
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- Treatment Of Sludge (AREA)
Abstract
The invention discloses a ceramsite prepared by taking industrial waste as a main raw material, which comprises the following components: 60-80 parts of industrial sludge powder; 15-25 parts of shale; 20-30 parts of fly ash; 3-5 parts of clay; 10-15 parts of calcite; 5-8 parts of furnace ash; 10-20 parts of glass slag; and 30 parts of water. The invention also discloses a preparation method of the ceramsite, which comprises the steps of mixing, granulating and sintering the materials. The invention can utilize industrial wastes such as industrial sludge, fly ash, furnace ash and the like, and the produced ceramsite has excellent comprehensive performance in all aspects and higher commercial value.
Description
Technical Field
The invention relates to the field of industrial sludge treatment, in particular to the field of industrial sludge recycling, and relates to ceramsite prepared by taking industrial waste as a main raw material and a preparation method thereof.
Background
With the rapid development of economy in China, the number of various chemical plants, sewage plants and the like is continuously increased, the sewage amount caused by the continuous increase of the chemical plants, the sewage amount is continuously increased, a large amount of industrial sludge is generated, the industrial sludge contains a large amount of chemical components in wastewater, the direct discharge has great harm to the environment, the sludge contains various heavy metal elements, pathogenic microorganism bacteria and the like, if the industrial sludge is accumulated in a large amount, the sludge not only occupies the land area, but also can be rotten and pollute the urban environment, the environmental sanitation condition is influenced, a water source is polluted, the human health is influenced for a long time, the industrial sludge also contains rich organic matters, nitrogen, phosphorus and other nutrient elements, and the direct discharge of the industrial sludge is also great waste. In addition, in industrial production, a large amount of industrial wastes such as glass slag, furnace ash and the like are generated, and the industrial treatment is generally carried out in a landfill mode at present, so that not only is a great land resource occupied, but also the resource waste is caused to a certain extent.
At present, the mode of treating industrial sludge in China mainly comprises treatment technologies such as concentration, sludge conditioning, anaerobic digestion, dehydration, composting and incineration, the landfill treatment cost is low and the implementation is easy, however, in the process of industrial sludge landfill, landfill leachate and harmful gas are easily generated, the pollution of the leachate to soil is great, and the generated harmful gas is mainly methane and is easy to explode and burn; incineration of sludge is also one of the main ways of disposal, however incineration of sludge without drying is difficult and the cost required for incineration is high and uneconomical. Glass slag and furnace ash are common industrial wastes, most manufacturers select a direct landfill treatment mode at present, and the glass slag and the furnace ash are not economical and environment-friendly.
Disclosure of Invention
The invention aims to provide a ceramsite prepared by taking industrial wastes as main raw materials and a preparation method thereof, which can effectively recycle industrial sludge, provide a method for recycling industrial sludge and use various industrial wastes to recycle resources.
In order to solve the problems, the invention adopts the following technical scheme:
the ceramsite prepared by taking industrial waste as a main raw material comprises the following components in parts by weight:
60-80 parts of industrial sludge powder;
15-25 parts of shale;
20-30 parts of fly ash;
3-5 parts of clay;
10-15 parts of calcite;
5-8 parts of furnace ash;
10-20 parts of glass slag;
and 30 parts of water.
The preferable scheme comprises the following components in parts by mass:
70 portions of industrial sludge powder
20 parts of shale;
25 parts of fly ash;
5 parts of clay;
10 parts of calcite;
7 parts of furnace dust;
15 parts of glass slag;
and 30 parts of water.
Preferably, the industrial sludge powder is obtained by dehydrating industrial sludge, drying and crushing the dehydrated industrial sludge to be below 150 meshes.
Preferably, the glass slag is obtained by crushing and screening glass waste slag to below 80 meshes.
The method for preparing the ceramsite by taking the industrial waste as the main raw material is characterized by comprising the following steps of:
(1) weighing industrial sludge powder, shale, fly ash, clay and furnace dust according to a ratio, adding water, stirring, adding glass slag and calcite, and stirring again to obtain a mixed material;
(2) adding the mixed material into a granulator, adding water into the mixed material in a spraying mode into the granulator, adjusting the pH value of the material, and continuing to operate the granulator after spraying is finished to obtain raw material balls;
(3) and drying the raw material balls, adding the dried raw material balls into a high-temperature furnace for preheating, heating the high-temperature furnace after preheating is finished, sintering the raw material balls, taking out the raw material balls after sintering is finished, and cooling to obtain the industrial sludge sintered ceramsite.
Preferably, the water used in the step (1) and the step (2) is 15 parts by weight, which is the same.
Preferably, in the step (3), the drying temperature of the raw material balls is 120 ℃.
Preferably, in the step (3), the preheating temperature is 350 ℃, the sintering temperature is 1150 ℃, and the temperature rising speed is 2 ℃/min.
The industrial sludge is the substrate of the ceramsite produced by the method, has good strength and hardness, and the prepared surface has more pores and better air permeability.
The shale and the fly ash are added, so that the internal structure of the ceramsite can be effectively changed, the shale and the fly ash are added, the dehydration performance of the ceramsite is improved, the fly ash can adsorb pollutants in the sludge to a certain degree, the pungent smell of the sludge is reduced, and the plasticity of a ceramsite raw material and the impact strength of a raw material ball can be improved by adding the shale; .
The main component of the calcite is calcium carbonate which mainly plays a role of a sintering aid in the raw materials, and the calcite can effectively help the ceramsite to be molded in the sintering process, provide the calcium content and enhance the strength and the service life of the ceramsite.
The glass slag can provide a large amount of silicon dioxide, and the silicon dioxide can reduce the dispersion degree of the clay, reduce the expansion performance of the clay and increase the strength of the ceramsite.
The technical scheme has the following beneficial technical effects:
the raw materials adopted by the invention are industrial wastes, and all components are combined by waste utilization, so that the environment is protected, the cost is low, the effective recycling of resources is realized, and the problem of recycling of a large amount of wastes is solved.
The industrial sludge sintered ceramsite prepared by matching the raw materials has better performance in all aspects, and the product performance is excellent by reasonably controlling the formula proportion.
The ceramsite prepared by the method disclosed by the invention is large in specific surface area, high in dehydration and water absorption rate and low in manufacturing cost, and meets the technical emission reduction policy.
The processing method provided by the invention is simple, the complicated steps in sintering are reasonably reduced, and the preparation of the invention can be easily carried out by operators.
Detailed description of the preferred embodiments
The invention is further described with reference to specific examples.
The following examples are not provided to limit the scope of the present invention, nor are the steps described to limit the order of execution. Modifications of the invention which are obvious to those skilled in the art in view of the prior art are also within the scope of the invention as claimed.
The first embodiment is as follows:
the ceramsite prepared by taking industrial waste as a main raw material comprises the following components in parts by weight:
60 parts of industrial sludge powder, 15 parts of shale, 20 parts of fly ash, 5 parts of clay, 10 parts of calcite, 5 parts of furnace ash, 10 parts of glass slag and 30 parts of water.
A method for preparing ceramsite by taking industrial waste as a main raw material comprises the following steps:
(1) weighing industrial sludge powder, shale, fly ash, clay and furnace dust according to a ratio, adding 15 parts of water, stirring, adding glass slag and calcite, and stirring again to obtain a mixed material, wherein the stirring speed is 1200 revolutions per minute; (ii) a
(2) Adding the mixed material into a granulator, adding water into the mixed material in a spraying mode into the granulator, wherein the added water is 12 parts, continuously operating the granulator after spraying is finished, and obtaining raw material balls after 50 minutes;
(3) drying the raw material balls at 120 ℃, then adding the raw material balls into a high-temperature furnace for preheating at 350 ℃, uniformly heating the high-temperature furnace to 1150 ℃ after preheating, sintering the raw material balls, taking out the raw material balls after sintering, and cooling to obtain the industrial sludge sintered ceramsite.
Example two:
the ceramsite prepared by taking industrial waste as a main raw material comprises the following components in parts by weight:
70 parts of industrial sludge powder, 20 parts of shale, 25 parts of fly ash, 5 parts of clay, 10 parts of calcite, 7 parts of furnace ash, 15 parts of glass slag and 30 parts of water.
A method for preparing ceramsite by taking industrial waste as a main raw material comprises the following steps:
(1) weighing industrial sludge powder, shale, fly ash, clay and furnace dust according to a ratio, adding 15 parts of water, stirring, adding glass slag and calcite, and stirring again to obtain a mixed material, wherein the stirring speed is 1200 revolutions per minute; (ii) a
(2) Adding the mixed material into a granulator, adding water into the mixed material in a spraying mode into the granulator, wherein the added water is 12 parts, continuously operating the granulator after spraying is finished, and obtaining raw material balls after 50 minutes;
(3) drying the raw material balls at 120 ℃, then adding the raw material balls into a high-temperature furnace for preheating at 350 ℃, uniformly heating the high-temperature furnace to 1150 ℃ after preheating, sintering the raw material balls, taking out the raw material balls after sintering, and cooling to obtain the industrial sludge sintered ceramsite.
Example three:
the ceramsite prepared by taking industrial waste as a main raw material comprises the following components in parts by weight:
70 parts of industrial sludge powder, 30 parts of shale, 30 parts of fly ash, 5 parts of clay, 10 parts of calcite, 7 parts of furnace ash, 15 parts of glass slag and 30 parts of water.
A method for preparing ceramsite by taking industrial waste as a main raw material comprises the following steps:
(1) weighing industrial sludge powder, shale, fly ash, clay and furnace dust according to a ratio, adding 15 parts of water, stirring, adding glass slag and calcite, and stirring again to obtain a mixed material, wherein the stirring speed is 1200 revolutions per minute; (ii) a
(2) Adding the mixed material into a granulator, adding water into the mixed material in a spraying mode into the granulator, wherein the added water is 12 parts, continuously operating the granulator after spraying is finished, and obtaining raw material balls after 50 minutes;
(3) drying the raw material balls at 120 ℃, then adding the raw material balls into a high-temperature furnace for preheating at 350 ℃, uniformly heating the high-temperature furnace to 1150 ℃ after preheating, sintering the raw material balls, taking out the raw material balls after sintering, and cooling to obtain the industrial sludge sintered ceramsite.
Example four:
the ceramsite prepared by taking industrial waste as a main raw material comprises the following components in parts by weight:
80 parts of industrial sludge powder, 25 parts of shale, 30 parts of fly ash, 8 parts of clay, 15 parts of calcite, 8 parts of furnace ash, 20 parts of glass slag and 30 parts of water.
A method for preparing ceramsite by taking industrial waste as a main raw material comprises the following steps:
(1) weighing industrial sludge powder, shale, fly ash, clay and furnace dust according to a ratio, adding 15 parts of water, stirring, adding glass slag and calcite, and stirring again to obtain a mixed material, wherein the stirring speed is 1200 revolutions per minute; (ii) a
(2) Adding the mixed material into a granulator, adding water into the mixed material in a spraying mode into the granulator, wherein the added water is 12 parts, continuously operating the granulator after spraying is finished, and obtaining raw material balls after 50 minutes;
(3) drying the raw material balls at 120 ℃, then adding the raw material balls into a high-temperature furnace for preheating at 350 ℃, uniformly heating the high-temperature furnace to 1150 ℃ after preheating, sintering the raw material balls, taking out the raw material balls after sintering, and cooling to obtain the industrial sludge sintered ceramsite.
And (3) collecting the ceramsite prepared in the first to fourth embodiments, and detecting partial performance of the ceramsite, wherein the detection data is as follows:
table one: examples Performance data of the ceramsite obtained in the first, second, third and fourth examples
| Example one | Example two | EXAMPLE III | Example four | |
| Range of particle size | 10-15mm | 12-22mm | 18-27mm | 20-30mm |
| Bulk density | 1000Kg/m3 | 1200Kg/m3 | 1100Kg/m3 | 1100Kg/m3 |
| Barrel pressure strength | 6.0Mpa | 6.5Mpa | 6.2Mpa | 6.2Mpa |
| Water absorption rate of 1h | 15％ | 20％ | 22％ | 23％ |
The first table shows that the data of the ceramsite prepared by the method all reach a good range, the performance index is excellent, the strength of the second example is higher, and the absorptivity of the third example and the fourth example is higher. However, in the actual preparation process, the added amounts of the fly ash and the shale have certain influence on the stability inside the ceramsite, so that the volume of the ceramsite is increased, the specific surface area is reduced, and the added amounts of the shale and the fly ash are greatly increased, so that the cost of industrial sludge treatment can be increased.
Claims (8)
1. The ceramsite prepared by taking industrial waste as a main raw material is characterized by comprising the following components in parts by mass:
60-80 parts of industrial sludge powder;
15-25 parts of shale;
20-30 parts of fly ash;
3-5 parts of clay;
10-15 parts of calcite;
5-8 parts of furnace ash;
10-20 parts of glass slag;
and 30 parts of water.
2. The ceramsite prepared by taking industrial waste as a main raw material according to claim 1, is characterized by comprising the following components in parts by mass:
70 parts of industrial sludge powder;
20 parts of shale;
25 parts of fly ash;
5 parts of clay;
10 parts of calcite;
7 parts of furnace dust;
15 parts of glass slag;
and 30 parts of water.
3. The ceramsite prepared from industrial wastes as main raw materials according to claim 1, wherein the industrial sludge powder is obtained by dehydrating industrial sludge, drying and crushing the industrial sludge to below 150 meshes.
4. The ceramsite prepared by using industrial wastes as main raw materials according to claim 1, wherein the glass slag is obtained by crushing and screening glass waste slag to below 80 meshes.
5. The method for preparing the ceramsite which is prepared by taking industrial waste as a main raw material and is described in the claims 1-4 is characterized by comprising the following steps:
(1) weighing industrial sludge powder, shale, fly ash, clay and furnace dust according to a ratio, adding water, stirring, adding glass slag and calcite, and stirring again to obtain a mixed material;
(2) adding the mixed material into a granulator, adding water into the mixed material in a spraying manner inside the granulator,
after spraying, continuously operating the granulator to obtain raw material balls;
(3) and drying the raw material balls, adding the dried raw material balls into a high-temperature furnace for preheating, heating the high-temperature furnace after preheating is finished, sintering the raw material balls, taking out the raw material balls after sintering is finished, and cooling to obtain the industrial sludge sintered ceramsite.
6. The method for preparing ceramsite according to claim 5, wherein the water used in the steps (1) and (2) is 15 parts by weight, and the stirring speed in the step (1) is 1200 rpm.
7. The method for preparing ceramsite according to claim 5, wherein the drying temperature of the raw material pellets in step (3) is 120 ℃.
8. The method as claimed in claim 5, wherein the preheating temperature in step (3) is 350 ℃, the sintering temperature is 1150 ℃, and the heating rate is 2 ℃/min.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112573901A (en) * | 2020-12-14 | 2021-03-30 | 中国科学院过程工程研究所 | Method for preparing homogeneous porous ceramsite by using sludge and homogeneous porous ceramsite |
| CN114478048A (en) * | 2022-02-16 | 2022-05-13 | 北京蚯蚓科技有限公司 | Method for preparing ceramsite by using coal-based solid waste |
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| CN108585934A (en) * | 2018-06-25 | 2018-09-28 | 西安科技大学 | A kind of aluminium sludge ceramsite preparation method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112573901A (en) * | 2020-12-14 | 2021-03-30 | 中国科学院过程工程研究所 | Method for preparing homogeneous porous ceramsite by using sludge and homogeneous porous ceramsite |
| CN114478048A (en) * | 2022-02-16 | 2022-05-13 | 北京蚯蚓科技有限公司 | Method for preparing ceramsite by using coal-based solid waste |
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