CN105565778B - Use the production system and its production method of salt marsh silt soil baking ceramsite - Google Patents
Use the production system and its production method of salt marsh silt soil baking ceramsite Download PDFInfo
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- CN105565778B CN105565778B CN201510971815.9A CN201510971815A CN105565778B CN 105565778 B CN105565778 B CN 105565778B CN 201510971815 A CN201510971815 A CN 201510971815A CN 105565778 B CN105565778 B CN 105565778B
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- salt marsh
- silt soil
- production system
- salt
- marsh silt
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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
-
- 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
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
-
- 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
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/658—Atmosphere during thermal treatment
-
- 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
Abstract
The present invention is a kind of production system and generation method using salt marsh silt soil baking ceramsite; including draining desalter; raw material fire system and acidic flue gas processing unit; the draining desalination system includes sedimentation centrifuge, and it includes blender, comminutor, dryer and rotary kiln that the raw material, which fire system,.The present invention prepares baking ceramsite using discarded salt marsh silt soil, its production system solves the problems, such as that salt marsh silt soil salt content is big, while solving the problems, such as the gaseous contamination environment generated after sintering again, turns waste into wealth, the utilization of resources is improved, the production cost of baking ceramsite is reduced.
Description
Technical field
It is especially a kind of using salt marsh silt soil baking ceramsite the present invention relates to a kind of utilization of discarded salt marsh silt soil
Production system further relates to the production method of above-mentioned baking ceramsite.
Background technology
With the Construction of Basement of the rapid development of China's engineering construction, especially skyscraper, a large amount of salinized soil are being built
If being thrown aside after being excavated in the process in city river, countryside depression or rural air storage, consumes a large amount of land requisition expenses, clears
The pork barrels such as take, occupies a large amount of valuable land resources for a long time, cause damages to soil, water source, river, vegetation etc..Such as：
The dredging silt salinized soil in 300,000 tons of Lianyun Harbour navigation channel, about 5 billion cubic meters, how handling building and throwing aside salinized soil is one important
Project.In the application of salt marsh silt soil baking ceramsite, it is that salt content is big there are major issue, a large amount of chlorination is will produce after sintering
Hydrogen pollutes environment,
Invention content
The technical problem to be solved by the present invention is in view of the deficiencies of the prior art, provide a kind of reasonable design, can quickly,
The production system of efficient process salt marsh silt soil baking ceramsite.
There is provided the production methods of above-mentioned baking ceramsite for another technical problem to be solved by this invention.
The technical problem to be solved by the present invention is to what is realized by technical solution below, the present invention is a kind of use
The production system of salt marsh silt soil baking ceramsite, its main feature is that：Including draining desalter, raw material fire system and acidic flue gas
Processing unit, the draining desalination system includes sedimentation centrifuge, and it includes blender, comminutor, baking that the raw material, which fire system,
Dry machine and rotary kiln.
The technical problems to be solved by the invention can also be further realized by technical solution below, and described one
Kind uses the production system of salt marsh silt soil baking ceramsite, its main feature is that：The sedimentation centrifuge includes outer barrel and inner cylinder, outer barrel
Drainage cavity is set as between inner cylinder, the bottom of outer barrel is equipped with discharge outlet, and top is equipped with upper cover；The inner cylinder includes cylinder, cylinder
The bottom of body is equipped with movable floor, and the top barrel of cylinder is equipped with screen meshes, water retaining cover is with inside screen meshes,
The lower section of inner cylinder is equipped with auger conveyor, and outer barrel is externally provided with the conveyance conduit to connect with auger conveyor.
The technical problems to be solved by the invention can also be further realized by technical solution below, and described one
Kind uses the production system of salt marsh silt soil baking ceramsite, its main feature is that：The inner cylinder height is 2m, there is the barrel of screen meshes
Height is 0.5m.
The technical problems to be solved by the invention can also be further realized by technical solution below, and described one
Kind uses the production system of salt marsh silt soil baking ceramsite, its main feature is that：The mesh of the screen meshes be it is rectangular, its side length is
75 microns.
The technical problems to be solved by the invention can also be further realized by technical solution below, and described one
Kind uses the production system of salt marsh silt soil baking ceramsite, its main feature is that：The maximum radius of turn of the inner cylinder is 2-5m.
The technical problems to be solved by the invention can also be further realized by technical solution below, and described one
Kind uses the production system of salt marsh silt soil baking ceramsite, its main feature is that：The outer barrel is equipped with water level observation device.
The technical problems to be solved by the invention can also be further realized by technical solution below, and described one
Kind uses the production system of salt marsh silt soil baking ceramsite, its main feature is that：The rotary kiln that the raw material fire system is equipped with kiln body,
The upstream end of kiln body is equipped with air intlet, and the end top of kiln body is equipped with exhaust outlet；The acidic flue gas processing unit includes dress
There is the recycling can of alkaline solution, gas transmission pipeline is connected on the exhaust outlet of rotary kiln, the end of gas transmission pipeline is located at
In the alkaline solution of recycling can, it is equipped with gas outlet at the top of recycling can, is connected with escape pipe on gas outlet, escape pipe is equipped with
Vacuum pump.The negative pressure that vacuum pump pumping generates is 20-50kPa.
Vacuum pump using black vacuum series, be mainly used to extract air and it is other have certain corrosivity, it is not soluble in water, allow
Gas containing a small amount of solid particle.Final vacuum is 5-7mbar, pumping speed 10-20L/min, power 70-100W, is turned
Speed is 3500-4500RPM, maximum pressure at expulsion 0.5-1bar（Gauge pressure）, -40 DEG C to 50 DEG C of operating ambient temperature.
The technical problems to be solved by the invention can also be further realized by technical solution below, and described one
Kind uses the production system of salt marsh silt soil baking ceramsite, its main feature is that：The recycling can is column, 500-1000 cubes of volume
Rice, is highly 8-10 meters, 4-6 meters of alkaline solution liquid level.
The technical problem to be solved by the present invention is to what is realized by technical solution below, the present invention is a kind of use
The production method of production system described above, its main feature is that, its step are as follows：
（1）The processing of salt marsh silt soil desalting and dewatering：Salt content is imported into centrifugal sedimentation in 10% salt marsh silt soil below
In the inner cylinder of machine, sedimentation centrifuge inner cylinder rotating so that gradually sedimentation reaches Tu Shui separation to salt marsh silt soil, and sedimentation centrifuge turns
Speed be 3000-4000 revs/min, open water retaining cover by the water separated be discharged, soluble-salt also simultaneously with water be discharged to get
It is less than 1% to salt content, moisture content is less than the salinized soil of 30-40%；
（2）Potting grain：Salinized soil is delivered to by auger conveyor in blender, at the same into blender be added sludge into
Row is mixed, and wherein the weight ratio of salinized soil and sludge is 60-70：Mixed material after stirring is sent to granulation by 30-40
Mechanism grain, granulation terminate or by drying machine dryings, and rear rotary kiln of being sent into is fired, the firing time be 5-10 minutes to get
Haydite.
Salt marsh silt soil includes：The high river facies mud of ocean sludge, high-water content marine soft soil, salt content, salt content
The high engineering dregs of high-moisture.
Contain hydrogen chloride, sulfur dioxide or carbon dioxide etc. in the sour gas.
The technical problems to be solved by the invention can also be further realized by technical solution below, the life
Production method, its main feature is that：The sour gas generated in sintering procedure is delivered to by gas transmission pipeline in recycling can, by returning
Alkaline solution in closed cans recycles sour gas.
The alkaline solution can be the solution of water soluble alkali：Such as sodium hydroxide, calcium hydroxide can also be that highly basic is weak
The aqueous solution of hydrochlorate：Such as sodium carbonate and sodium bicarbonate can also be ammonium hydroxide etc..
The water of saliferous in salt marsh silt soil is detached discharge by the present invention using sedimentation centrifuge, is reused blender, is granulated
Machine and rotary kiln sintered obtained baking ceramsite.The acid gas generated in sintering procedure simultaneously by the recycling can equipped with alkaline solution into
Row recycling, it is possible to reduce environmental pollution.
Compared with prior art, the present invention prepares baking ceramsite using discarded salt marsh silt soil, and production system solves
Salt marsh silt soil salt content big problem, while solving the problems, such as the gaseous contamination environment generated after sintering again, change give up into
Treasured improves the utilization of resources, reduces the production cost of baking ceramsite.
Description of the drawings
Fig. 1 is a kind of flow diagram of present system.
Fig. 2 is the structural schematic diagram of sedimentation centrifuge.
Specific implementation mode
Referring to the drawings, further describe the specific technical solution of the present invention, in order to those skilled in the art into
One step the present invention is understood, without constituting the limitation to its right.
With reference to attached drawing 1, a kind of production system using salt marsh silt soil baking ceramsite, including draining desalter, raw material
Firing system and acidic flue gas processing unit, the draining desalination system includes sedimentation centrifuge 2, and the raw material fire system packet
Include blender 3, comminutor 4, dryer 5 and rotary kiln 6.
The sedimentation centrifuge 2 includes outer barrel 15 and inner cylinder 16, and drainage cavity, outer barrel are set as between outer barrel 15 and inner cylinder 16
15 bottom is equipped with discharge outlet, and top is equipped with upper cover, and outer barrel 15 is equipped with water-level gauge.The inner cylinder 16 includes cylinder, cylinder
Bottom is equipped with movable floor, and the top barrel of cylinder is equipped with screen meshes, water retaining cover 13 is with inside screen meshes, inside
The lower section of cylinder 16 is equipped with auger conveyor 14, and outer barrel 15 is externally provided with the conveyance conduit to connect with auger conveyor 14.The interior bucket
Height is 2m, and it is 0.5m to have the barrel height of screen meshes.The mesh of screen meshes is rectangular, and its side length is 75 microns.Inner cylinder
16 maximum radius of turn is 4m.
In use, 16 rotating centrifugal of inner cylinder, making salt marsh silt soil, gradually sedimentation reaches Tu Shui separation, is observed by water-level gauge
After reaching equivalent water level, water retaining cover 13 is pulled up for water level, and brackish water is flowed into drainage cavity by screen meshes, passes through outer barrel 15
The discharge outlet of bottom is discharged.Then the movable floor of 16 bottom of inner cylinder is opened, the salinized soil left drops into auger conveyor 14
On, it is transferred out by auger conveyor 14.
The rotary kiln 6 that the raw material fire system is equipped with kiln body, and the upstream end of kiln body is equipped with air intlet 7, air intlet 7
Place is equipped with air blower, and the end top of kiln body is equipped with exhaust outlet.The acidic flue gas processing unit includes that alkaline solution 9 is housed
Recycling can 10, alkaline solution 9 are sodium bicarbonate solution.Recycling can 10 is column, and 1000 cubic metres of volume is highly 10 meters, alkali
Property 9 liquid level of solution be 6 meters.
Gas transmission pipeline 8 is connected on the exhaust outlet of rotary kiln 6, the end of gas transmission pipeline 8 is located at recycling can 10
Alkaline solution 9 in, the end of gas transmission pipeline 8 is not less than 20 centimetres away from the height of 9 liquid level of alkaline solution.In recycling can 10
Top be equipped with gas outlet, be connected with escape pipe 11 on gas outlet, the length of the escape pipe 11 in recycling can 10 is 15 lis
Rice.Escape pipe 11 is equipped with vacuum pump 12, and the negative pressure that the pumping of vacuum pump 12 generates is 20-50kPa.On gas transmission pipeline 8 also
Equipped with smoke alarm.
Vacuum pump using black vacuum series, be mainly used to extract air and it is other have certain corrosivity, it is not soluble in water, allow
Gas containing a small amount of solid particle.Final vacuum is 5-7mbar, pumping speed 10-20L/min, power 70-100W, is turned
Speed is 3500-4500RPM, maximum pressure at expulsion 0.5-1bar（Gauge pressure）, -40 DEG C to 50 DEG C of operating ambient temperature.
In use, sour gas enters concurrent biochemical reaction in alkaline solution, prevent sour gas from polluting environment, and energy
It recycles.Negative pressure is generated in the recycling can 10 that alkaline solution can be caused to hold using vacuum pump, to make Expanded Clay Rotary Kilns 6
Middle fuel combustion obtains more abundant, saving fuel, avoids sour gas direct emission, pollution environment.
A kind of production method using production system described above, its step are as follows：
（1）The processing of salt marsh silt soil desalting and dewatering：Salt content is imported into centrifugal sedimentation in 10% salt marsh silt soil below
In the inner cylinder of machine, sedimentation centrifuge inner cylinder rotating so that gradually sedimentation reaches Tu Shui separation to salt marsh silt soil, and sedimentation centrifuge turns
Speed be 3000-4000 revs/min, open water retaining cover by the water separated be discharged, soluble-salt also simultaneously with water be discharged to get
It is less than 1% to salt content, moisture content is less than the salinized soil of 30-40%；
（2）Potting grain：Salinized soil is delivered to by auger conveyor in blender 3, while dispensing is added into blender 3
1 is mixed, and the main component of dispensing is sludge, and wherein the weight ratio of salinized soil and sludge is 65：35, after stirring
Mixed material is sent to the granulation of comminutor 4, and granulation terminates or dried by dryer 5, and rear rotary kiln 6 of being sent into is fired, and is burnt
Time processed is 10 minutes, and firing temperature is 1100-1200 DEG C to get haydite.
The sour gas generated in sintering procedure such as hydrogen chloride, sulfur dioxide or carbon dioxide etc., pass through air shooter
Road 8 is delivered in recycling can 10, and sodium bicarbonate solution is housed in recycling can 10, passes through the sodium bicarbonate solution pair in recycling can 10
Sour gas is recycled.
Claims (5)
1. a kind of production system using salt marsh silt soil baking ceramsite, it is characterised in that：Including draining desalter, raw material are burnt
System and acidic flue gas processing unit processed, the draining desalter includes sedimentation centrifuge, and the raw material fire system and include
Blender, comminutor, dryer and the rotary kiln set gradually；The sedimentation centrifuge includes outer barrel and inner cylinder, outer barrel and interior
Drainage cavity is set as between cylinder, the bottom of outer barrel is equipped with discharge outlet, and top is equipped with upper cover；The inner cylinder includes cylinder, cylinder
Bottom is equipped with movable floor, and the top barrel of cylinder is equipped with screen meshes, and water retaining cover is with inside screen meshes, described interior
Cylinder height be 2m, have screen meshes barrel height be 0.5m, the lower section of inner cylinder be equipped with auger conveyor, outer barrel be externally provided with
The conveyance conduit that auger conveyor connects, the conveyance conduit are connected with blender；The rotary kiln that the raw material fire system is set
There are kiln body, the upstream end of kiln body to be equipped with air intlet, the end top of kiln body is equipped with exhaust outlet；The acidic flue gas processing unit
Include the recycling can equipped with alkaline solution, gas transmission pipeline, the end of gas transmission pipeline are connected on the exhaust outlet of rotary kiln
End is located in the alkaline solution of recycling can, is equipped with gas outlet at the top of recycling can, escape pipe, escape pipe are connected on gas outlet
It is equipped with vacuum pump, the recycling can is column, and 500-1000 cubic metres of volume is highly 8-10 meters, and alkaline solution liquid level is high
4-6 meters of degree；
The production method of the production system, its step are as follows：
（1）The processing of salt marsh silt soil desalting and dewatering：Salt content is imported into sedimentation centrifuge in 10% salt marsh silt soil below
In inner cylinder, sedimentation centrifuge inner cylinder rotating so that gradually sedimentation reaches Tu Shui separation to salt marsh silt soil, and sedimentation centrifuge rotating speed is
3000-4000 revs/min, open water retaining cover by the water separated be discharged, soluble-salt also simultaneously with water be discharged to get to containing
Salt amount is less than 1%, and moisture content is less than the salinized soil of 30-40%；
（2）Potting grain：Salinized soil is delivered to by auger conveyor in blender, while sludge is added into blender and is mixed
Stirring is closed, the wherein weight ratio of salinized soil and sludge is 60-70：Mixed material after stirring is sent to granulation mechanism by 30-40
Grain, granulation terminate or by drying machine dryings, and rear rotary kiln of being sent into is fired, and the firing time is 5-10 minutes to get haydite.
2. the production system according to claim 1 using salt marsh silt soil baking ceramsite, it is characterised in that：The strainer
The mesh of sieve pore is rectangular, and its side length is 75 microns.
3. the production system according to claim 1 using salt marsh silt soil baking ceramsite, it is characterised in that：The inner cylinder
Maximum radius of turn be 2-5m.
4. the production system according to claim 1 using salt marsh silt soil baking ceramsite, it is characterised in that：The outer barrel
It is equipped with water level observation device.
5. the production system according to claim 1 using salt marsh silt soil baking ceramsite, it is characterised in that：Production method
In, the sour gas generated in sintering procedure is delivered to by gas transmission pipeline in recycling can, and the alkalinity in recycling can is passed through
Solution recycles sour gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510971815.9A CN105565778B (en) | 2015-12-22 | 2015-12-22 | Use the production system and its production method of salt marsh silt soil baking ceramsite |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510971815.9A CN105565778B (en) | 2015-12-22 | 2015-12-22 | Use the production system and its production method of salt marsh silt soil baking ceramsite |
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| Publication Number | Publication Date |
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| CN105565778A CN105565778A (en) | 2016-05-11 |
| CN105565778B true CN105565778B (en) | 2018-10-16 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106278172A (en) * | 2016-08-24 | 2017-01-04 | 河南省建筑科学研究院有限公司 | A kind of preparation method of municipal sludge curing heavy metal high-strength ceramic granule |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200979339Y (en) * | 2006-12-05 | 2007-11-21 | 宋莲琴 | Centrifugal superposed sludge dehydration machine |
| CN101503288A (en) * | 2009-03-03 | 2009-08-12 | 淮海工学院 | Production method for making brick by using marine sludge |
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2015
- 2015-12-22 CN CN201510971815.9A patent/CN105565778B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200979339Y (en) * | 2006-12-05 | 2007-11-21 | 宋莲琴 | Centrifugal superposed sludge dehydration machine |
| CN101503288A (en) * | 2009-03-03 | 2009-08-12 | 淮海工学院 | Production method for making brick by using marine sludge |
Non-Patent Citations (1)
| Title |
|---|
| 海淤泥资源化利用相关技术研究分析;万锋 等;《砖瓦》;20141231(第5期);第13页离心沉降技术部分 * |
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