CN109467443A - A kind of preparation method of sludge regeneration haydite - Google Patents
A kind of preparation method of sludge regeneration haydite Download PDFInfo
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- CN109467443A CN109467443A CN201910036843.XA CN201910036843A CN109467443A CN 109467443 A CN109467443 A CN 109467443A CN 201910036843 A CN201910036843 A CN 201910036843A CN 109467443 A CN109467443 A CN 109467443A
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/62204—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products using waste materials or refuse
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- 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
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Abstract
The present invention relates to a kind of preparation methods of sludge regeneration haydite, comprising the following steps: 1) sludge being added in Drying and being dried to moisture content is 3~8%, and it is spare to be then comminuted into sludge powder；2) it is taken out after 1~2h of ball mill grinding being added in 55~70 parts of sludge powder, 20~30 parts of shale powders, 10~20 parts of solid waste powder, 3~8 parts of clays and 10~15 parts of stalk grains, obtains shell material；3) 10~20 parts of sawdusts, 1~3 part of sludge powder, 0.5~2 part of shale powder and 1~3 part of water are added after blender stirs 0.5~1h and are taken out, obtain core material；4) core material is added in pelletizer to the core ball that 2~5mm of diameter is made, shell material is continuously added into pelletizer, core bulb diameter is made to increase to 7~10mm, obtain base ball；5) base ball is added in rotary kiln and carries out sublevel section calcining, obtain haydite；6) continue to be cooled to 90~110 DEG C to primary haydite, then carry out shaking-sieving, collect oversize up to product.Resulting haydite can be used for developing thermal insulation mortar, heat preservation and soundproof wallboard, deck paving, suction wave/radiation shielding material etc..
Description
Technical field
It the present invention relates to the use of the technical field more particularly to a kind of regeneration of sludge of the nuisances such as sludge production building material
The preparation method of haydite.
Background technique
According to statistics, sewage sludge harmlessness disposing rate in China's is still lower, or is 20%-30%, and some areas are lower.It is main dirty
Mud is handled in method of disposal, and agricultural sludge and landfill are all limited by the soil and shale of sludge etc. of disposition sludge, and sludge
The heat that anhydration and incineration is generated using organic compound combustion itself can kill pathogenic microorganism completely, and reduce to the maximum extent
Sludge volume, inorganic matter then becomes minimal amount of ashes after burning, and wherein the inorganic constituents of burning ash and clay are close.Due to
Radical change has occurred in incineration residue in nature, and the sludge for being sintered desiccation can be used as the mixing pellet of haydite, market demand
Greatly.After sludge anhydration burning is a kind of most thorough specific resistance to filtration method, therefore sludge carries out anhydration and incineration and burns
Lime-ash has been trend of the times for construction material.Meanwhile the solid waste (such as building waste) in China, agricultural stalk etc. are discarded
Object also urgently consumes.And haydite technology of preparing in the prior art cannot directly utilize sludge, solid waste and agricultural stalk etc.
Do raw material.
In view of this, it is desirable to provide a kind of new technology, which is suitable for doing raw material using a variety of wastes, carries out haydite production.
Summary of the invention
The purpose of the invention is to overcome the deficiencies of the prior art and provide a kind of preparation side of sludge regeneration haydite
Method.
The present invention is achieved through the following technical solutions:
A kind of preparation method of sludge regeneration haydite includes the following steps by weight,
A pretreatment of raw material:
1) sludge being added in Drying and being dried to moisture content is 3~8%, and pulverizer is then added and is ground into sludge powder
It is spare；
2) by 55~70 parts of sludge powder, 20~30 parts of shale powders, 10~20 parts of solid waste powder, 3~8 parts of clays and 10
~15 parts of stalk grains take out after 1~2h of ball mill grinding is added, and obtain shell material；
3) blender stirring is added in 10~20 parts of sawdusts, 1~3 part of sludge powder, 0.5~2 part of shale powder and 1~3 part of water
It is taken out after 0.5~1h, obtains core material；
The preparation of B base ball:
4) core material is added in pelletizer to the core ball that 2~5mm of diameter is made, shell material is then continuously added into pelletizer makes
It obtains core bulb diameter and increases to 7~10mm, obtain base ball；
The calcining of C base ball:
5) base ball is added in rotary kiln and carries out sublevel section calcining, wherein
First stage temperature is 80~120 DEG C, and the time is 30~40min；
Second stage temperature is 500~700 DEG C, and the time is 30~40min；
Phase III temperature is 1100~1300 DEG C, and the time is 20~30min；
Fourth stage cools to 200~250 DEG C, then takes out, and obtains primary haydite；
The screening of D haydite:
6) continue to be cooled to 90~110 DEG C to primary haydite, be then added in reciprocating sieve and carry out shaking-sieving, when vibration
Between be 10~15min, obtain oversize and screenings, collect oversize up to product haydite, collected screenings is that sludge is made pottery
Sand.
Further, sludge powder diameter is 5~10mm, and shale powder partial size is 0.01~0.03mm, solid waste powder diameter
For 2~5mm, stalk grain partial size is 1~3mm.
Further, shell material partial size is 0.05~0.2mm.
Further, sawdust partial size is 0.5~1mm.
Further, while shell material is added in step 4) in pelletizer, water mist is sprayed into pelletizer, to core bulb diameter
Stop sprinkling water mist when increasing to 6~8mm.
Further, the screen-aperture of vibrating screen is 3~5mm in 6).
Further, gained screenings can be by screenings in screenings in 6): sludge powder=1:7 ratio is mixed into sludge powder
It is middle to be utilized again.
Compared with prior art, the present invention has following usefulness:
A, used sludge source is extensive, including the big portion absolutely such as city sewage and sludge, paper mill sludge and printing and dyeing sludge
Divide all kinds of sludge, and the initial aqueous rate of sludge is not limited significantly, the dewatered sludge of various moisture content is by drying
Cylinder is handled to water content 3~8%；
B, all raw materials are calcined at a high temperature of 1100~1300 DEG C, and all organic matters are whole in sludge and other raw materials
Decompose, pathogen killed by high temperature, and the ceramic silicate that remaining heavy metal is melted in raw material surrounds solidification, to environment without
Evil, while the service performance of ceramic product is not influenced；
C, the expansion character of haydite raw material can also be improved by sludge being added, and improve the performance of haydite, while joined page
Rock powder and solid waste etc. reduce the processing quality requirement of raw material, expand the source of raw material, utilize the butt heat in sludge
Value reduces fuel cost；
D, organic matter (including the partial organic substances and sawdust in the sludge powder and shale powder) combustion after calcining, in core ball
Burn totally, remaining ceramic silicate and heavy metals immobilization at core, and the core because the disappearance of organic principle totally due to exist
Irregular hole so that haydite center has pore structure, and has some strength simultaneously；
E, after calcining, organic matter in shell material (including stalk and sludge powder, shale powder, solid waste powder and glutinous
Partial organic substances in soil) burning totally makes haydite outer layer (part in addition to core) there are irregular hole, form hole
Structure, and there is some strength simultaneously；
F, the stalk and sawdust of addition can be formed organic matter agglomerate in base ball and (be deposited in base ball with molecule
), these agglomerates first choice in calcination process is consumed to form hole, is conducive to the formation of pore structure；
G, segmentation is calcined, and temperature gradually rises, and can guarantee that base ball will not burst because of high temperature, and calcining is caused to be lost
It loses, wherein the first stage can make the moisture in base ball sharply remove, and form more stable sphere；When second stage, in base ball
Stalk and sawdust be consumed first, while base ball further solidifies, and forms preliminary pore structure；When the phase III, in base ball
Organic matter completes consumption, forms more pore structures, while the ceramic silicate in raw material can further solidify this some holes knot
Structure forms fine and close microcellular structure, so that the intensity of haydite is improved so that the aperture of this some holes reduces；
H, provided haydite credit rating with higher is detected by GB/T17431.1-2010 listed item,
Core index is as follows:
Partial size are as follows: 7~10mm；Density is 307~498kg/m3；Cylindrical compress strength is 2~3Mpa；
Haydite and sludge Tao Sha produced has good quality, and can be used for developing thermal insulation mortar, heat preservation and soundproof wallboard, bridge floor paving
Dress inhales the building materials such as wave/radiation shielding material, is applied to the fields such as bridge, road and civil energy-conserving construction, benefits the nation and the people,
Use scope is wide, has a extensive future.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
Embodiment 1
It is 3% that the sludge that initial water content is 46%, which is added in Drying, and is dried to moisture content, and powder is then added
It is 5mm that broken machine, which is crushed to partial size, obtains sludge powder, then sticks 55kg sludge powder, 20kg shale powder, 10kg solid waste powder, 3kg
Soil and 10kg stalk grain take out after ball mill grinding 2 is added, and obtain the shell material that partial size is 0.2mm；Then by 10kg sawdust, 1kg
Sludge powder, 0.5kg shale powder and 1kg water take out after blender stirring 0.5h is added, and obtain core material；Then pelletizer is added in core material
In the core ball of diameter 2mm is made, shell material is then continuously added into pelletizer, core bulb diameter is made to increase to 7mm, obtain base ball,
While shell material is added in pelletizer, water mist is sprayed into pelletizer, and stop spray water when core bulb diameter increases to 6mm
Mist；Then gained base ball is added in rotary kiln and carries out calcine by steps, in which:
First stage temperature is 80 DEG C, time 40min；
Second stage temperature is 500 DEG C, time 40min；
Phase III temperature is 1100 DEG C, time 30min；
Fourth stage cools to 200 DEG C, then takes out, and obtains primary haydite；
Finally continue to be cooled to 90 DEG C to primary haydite, is then added in reciprocating sieve (screen-aperture 3mm) and is shaken
Dynamic screening, vibration time are 10min, collect oversize up to product.
Preferably, solid waste powder diameter is 2mm, and stalk grain partial size is 1mm；Sawdust partial size is 0.5mm, shale powder partial size
For 0.01mm.
Embodiment 2
It is 5% that the sludge that initial water content is 55%, which is added in Drying, and is dried to moisture content, and powder is then added
It is 8mm that broken machine, which is crushed to partial size, obtains sludge powder, then sticks 62kg sludge powder, 26kg shale powder, 16kg solid waste powder, 5kg
Soil and 12.5kg stalk grain take out after ball mill grinding 1.5h is added, and obtain the shell material that partial size is 0.11mm；Then 15kg is sawed
End, 2kg sludge powder, 1.3kg shale powder and 2kg water take out after blender stirring 45min is added, and obtain core material；Then core material is added
Then the core ball for entering to be made diameter 3mm in pelletizer continuously adds shell material into pelletizer and core bulb diameter is made to increase to 8mm,
Base ball is obtained, while shell material is added in pelletizer, water mist is sprayed into pelletizer, and stop when core bulb diameter increases to 7mm
Only spray water mist；Then gained base ball is added in rotary kiln and carries out calcine by steps, in which:
First stage temperature is 100 DEG C, time 35min；
Second stage temperature is 600 DEG C, time 35min；
Phase III temperature is 1200 DEG C, time 25min；
Fourth stage cools to 230 DEG C, then takes out, and obtains primary haydite；
Finally continue to be cooled to 100 DEG C to primary haydite, is then added in reciprocating sieve (screen-aperture 4mm) and is shaken
Dynamic screening, vibration time are 12min, collect oversize up to product.
Preferably, solid waste powder diameter is 3mm, and stalk grain partial size is 2mm；Sawdust partial size is 0.8mm, shale powder partial size
For 0.02mm.
Embodiment 3
It is 8% that the sludge that initial water content is 60%, which is added in Drying, and is dried to moisture content, and powder is then added
It is 10mm that broken machine, which is crushed to partial size, sludge powder is obtained, then by 70kg sludge powder, 30kg shale powder, 20kg solid waste powder, 8kg
Clay and 15kg stalk grain take out after ball mill grinding 2h is added, and obtain the shell material that partial size is 0.2mm；Then by 20kg sawdust,
3kg sludge powder, 2kg shale powder and 3kg water take out after blender stirring 1h is added, and obtain core material；Then pelletizer is added in core material
In the core ball of diameter 5mm is made, shell material is then continuously added into pelletizer, core bulb diameter is made to increase to 10mm, obtain base ball,
While shell material is added in pelletizer, water mist is sprayed into pelletizer, and stop spray water when core bulb diameter increases to 9mm
Mist；Then gained base ball is added in rotary kiln and carries out calcine by steps, in which:
First stage temperature is 120 DEG C, time 30min；
Second stage temperature is 700 DEG C, time 30min；
Phase III temperature is 1300 DEG C, time 20min；
Fourth stage cools to 250 DEG C, then takes out, and obtains primary haydite；
Finally continue to be cooled to 110 DEG C to primary haydite, is then added in reciprocating sieve (screen-aperture 5mm) and is shaken
Dynamic screening, vibration time are 15min, collect oversize up to product.
Preferably, solid waste powder diameter is 5mm, and stalk grain partial size is 3mm；Sawdust partial size is 1mm, and shale powder partial size is
0.03mm。
Embodiment 4
In addition to the following contents, remaining content and embodiment 1 are consistent, specific different are as follows:
Mixture in 55kg sludge powder also containing the vibrating screen screenings in Examples 1 to 3, specially
6.875kg, and the ratio of screenings is 1:1:2 in Examples 1 to 3.
Embodiment 5
In addition to the following contents, remaining content and embodiment 2 are consistent, specific different are as follows:
Mixture in 62kg sludge powder also containing the vibrating screen screenings in Examples 1 to 3, specially
7.75kg, and the ratio of screenings is 1:2:1 in Examples 1 to 3.
Embodiment 6
In addition to the following contents, remaining content and embodiment 3 are consistent, specific different are as follows:
Mixture in 70kg sludge powder also containing the vibrating screen screenings in Examples 1 to 3, specially
8.75kg, and the ratio of screenings is 2:1:1 in Examples 1 to 3.
Gained haydite in Examples 1 to 6 is detected by GB/T17431.1-2010 listed item, as a result as follows:
| Embodiment | 1 | 2 | 3 | 4 | 5 | 6 |
| Partial size/mm | 7 | 8 | 10 | 7 | 8 | 10 |
| Density/kg/m3 | 307 | 431 | 488 | 351 | 459 | 498 |
| Cylindrical compress strength/Mpa | 2 | 2.4 | 2.8 | 2.1 | 2.5 | 3 |
Data in upper table show that the resulting haydite density of embodiment 46 and intensity are respectively higher than embodiment 1,2 and 3, say
Bright addition screenings can be improved the quality of haydite.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (7)
1. a kind of preparation method of sludge regeneration haydite, which is characterized in that by weight, include the following steps,
A pretreatment of raw material:
1) sludge being added in Drying and being dried to moisture content is 3~8%, and then it is standby to be ground into sludge powder for addition pulverizer
With；
2) by 55~70 parts of sludge powder, 20~30 parts of shale powders, 10~20 parts of solid waste powder, 3~8 parts of clays and 10~15
Part stalk grain takes out after 1~2h of ball mill grinding is added, and obtains shell material；
3) by 10~20 parts of sawdusts, 1~3 part of sludge powder, 0.5~2 part of shale powder and 1~3 part of water be added blender stirring 0.5~
It is taken out after 1h, obtains core material；
The preparation of B base ball:
4) core material is added in pelletizer to the core ball that 2~5mm of diameter is made, then shell material is continuously added into pelletizer and makes core
Bulb diameter increases to 7~10mm, obtains base ball；
The calcining of C base ball:
5) base ball is added in rotary kiln and carries out sublevel section calcining, wherein
First stage temperature is 80~120 DEG C, and the time is 30~40min；
Second stage temperature is 500~700 DEG C, and the time is 30~40min；
Phase III temperature is 1100~1300 DEG C, and the time is 20~30min；
Fourth stage cools to 200~250 DEG C, then takes out, and obtains primary haydite；
The screening of D haydite:
6) continue to be cooled to 90~110 DEG C to primary haydite, be then added in reciprocating sieve and carry out shaking-sieving, vibration the time be
10~15min obtains oversize and screenings, collects oversize up to product.
2. a kind of preparation method of sludge regeneration haydite according to claim 1, it is characterised in that: sludge powder diameter is 5
~10mm, shale powder partial size are 0.01~0.03mm, and solid waste powder diameter is 2~5mm, and stalk grain partial size is 1~3mm.
3. a kind of preparation method of sludge regeneration haydite according to claim 1, it is characterised in that: shell material partial size is 0.05
~0.2mm.
4. a kind of preparation method of sludge regeneration haydite according to claim 1, it is characterised in that: sawdust partial size is 0.5
~1mm.
5. a kind of preparation method of sludge regeneration haydite according to any one of claims 1 to 4, it is characterised in that: step
4) while shell material is added in pelletizer, water mist is sprayed into pelletizer, stops spray when core bulb diameter increases to 6~8mm
Watering mist.
6. a kind of preparation method of sludge regeneration haydite according to claim 5, it is characterised in that: 6) sieve of vibrating screen in
Hole aperture is 3~5mm.
7. a kind of preparation method of sludge regeneration haydite according to claim 6, it is characterised in that: 6) gained screenings in
Can be by screenings in screenings: sludge powder=1:7 ratio is mixed into sludge powder to be utilized again.
Priority Applications (1)
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| CN110041051A (en) * | 2019-05-07 | 2019-07-23 | 浙江工业大学 | A kind of river bottom mud and construction slurry haydite and preparation method thereof |
| CN110041094A (en) * | 2019-05-24 | 2019-07-23 | 重庆市都梁实业有限公司 | A kind of sludge, bone coal haydite preparation method |
| CN110590330A (en) * | 2019-09-24 | 2019-12-20 | 广西壮族自治区黎塘工业瓷厂 | Preparation method of sanitary ware blank based on waste porcelain and waste sludge |
| CN110922161A (en) * | 2019-11-06 | 2020-03-27 | 成都南联科技有限公司 | Method for preparing building ceramsite by using quartz sand tailings |
| CN114907136A (en) * | 2022-05-07 | 2022-08-16 | 昆明理工大学 | Process for preparing red mud-based sintered and expanded ceramsite by high-temperature electric furnace-microwave combined two-step method |
| CN116354698A (en) * | 2023-03-02 | 2023-06-30 | 宜昌光大陶粒制品有限责任公司 | Method for preparing ceramsite by sludge in sewage plant and prepared ceramsite |
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