CN106565191B - A kind of method that dry-pressing combination vacuum atomizing prepares cell concrete douche - Google Patents
A kind of method that dry-pressing combination vacuum atomizing prepares cell concrete douche Download PDFInfo
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- CN106565191B CN106565191B CN201610880496.5A CN201610880496A CN106565191B CN 106565191 B CN106565191 B CN 106565191B CN 201610880496 A CN201610880496 A CN 201610880496A CN 106565191 B CN106565191 B CN 106565191B
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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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/245—Curing concrete articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/02—Selection of the hardening environment
- C04B40/0272—Hardening under vacuum or reduced pressure
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00284—Materials permeable to liquids
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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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Ceramic Engineering (AREA)
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- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Chemical Kinetics & Catalysis (AREA)
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Abstract
The invention discloses a kind of methods that dry-pressing combination vacuum atomizing prepares cell concrete douche, this method is using cement and sand as raw material, it is molding bonding agent with silica solution, cell concrete green body is first prepared using the method for dry-pressing, then douche green body is conserved using the method for vacuum atomizing humidification, finally obtains cell concrete douche.This method can effectively adjust the open porosity of cell concrete douche, realization accurately controls douche water percolating capacity by adjusting cement content, the partial size of sand and vacuum atomizing maintaining process in raw material.Its manufacturing cost is far below micropore ceramics douche, and passage capacity is tested, and cell concrete douche has same as micropore ceramics excellent mechanical property and permeability performance.Many advantages, such as cheap and easy to get with raw material, maintaining process is simple and easy, open porosity height, stable mechanical property, excellent permeability performance.
Description
Technical field
The invention belongs to douche preparation technical fields, and in particular to a kind of dry-pressing combination vacuum atomizing prepares micropore coagulation
The method of native douche.
Background technique
Water resources crisis and grain security are the key subjects that China faces 21 century, and use is water-saving, energy-efficient irrigation side
Method is the inevitable choice alleviated water resources crisis and guarantee grain security.Last century Mo, the appearance of plastics industry is so that various sections
Water irrigation technique has tremendous development.But the infiltrating irrigation product of plastics has it to be difficult to the shortcomings that overcoming: (1) manufacturing process is complicated；(2)
It is easy to aging, service life is short；(3) hydrophily is not poor, high with soil compatibility, and residual shipwreck is to be discharged, winter easy bursting by freezing；(4)
Be subject to worm bore, damaged by rats and fail；(5) it is difficult to clean after runner blocking；(6) it is at high cost to scrap rear harmless treatment.
Some scholar's exploration discoveries, micropore ceramics are prepared into douche, and not only hydraulic performance is excellent, and can be avoided
The drawbacks described above of plastics douche.In recent years, based on micropore ceramics douche material preparation and hydraulic performance research gradually by
To the attention of some scholars.Document " preparation of clay-based micropore ceramics Subirrigation douche and performance optimization agricultural mechanical journal, 46
(2015), No.183-188 " discloses a kind of low cost preparation method of clay-based micropore ceramics douche.This method is with viscous
Soil, clinker and silica solution are raw material, and the clay-based micropore ceramics douche using high-temperature sintering process preparation has mechanical property steady
Remarkable advantage fixed, open porosity is high.When sintering temperature be 1075 DEG C, clinker volume be 10%~30% clay-based micropore
Ceramics with the bending strength of 9.0-11.0MPa, the linear shrinkage ratio of 3.8-4.7% and 36.8~44.8% open porosity,
It is the ideal material for preparing micropore ceramics douche.Document " diatomite micropore ceramics douche optimum preparation condition, agriculture project
Journal, 31 (2015), No.70-76 " disclose a kind of preparation method of micropore ceramics douche.This method is with clay, diatomite
It is raw material, the micropore ceramics douche open porosity with higher and ideal waterpower prepared using sintering process with calcium sulfate
Performance.Wherein use the diatomite volumes of 1075 DEG C of sintering for 15% micropore ceramics douche, linear shrinkage ratio 4.9% opens
Mouthful porosity is 26.3%, Vickers hardness 448MPa, is 1.64L/h in the flow of 1 meter of head, is that a kind of hydraulic performance is excellent
Micropore ceramics douche.Patent " a kind of preparation method of buried micropore ceramics root irrigator " (application number:
CN201310479770 a kind of preparation method of buried micropore ceramics root irrigator) is disclosed.It is original with clay and clinker
Material, the micropore ceramics douche preparation method using 950 DEG C of sintering preparations is simple, and materials are convenient, cheap, at 0.5~1 meter
The flow of head can effectively prevent the generation of douche blocking up to 4.2-8.5L/h, have to the development of water-saving irrigation technique
There is important realistic meaning.
Up to now, the material preparation about micropore ceramics douche and the existing a small amount of research report of hydraulic performance.It is overall
On, preparing raw material used in micropore ceramics douche is clay cheap and easy to get, clinker, diatomite etc., this helps to drop
The manufacturing cost of low micropore ceramics douche.But the preparation of micropore ceramics be unable to do without sintering, sintering can dramatically increase micropore pottery
The manufacturing cost of porcelain douche.From this, compared to plastics douche, although micropore ceramics douche is with many significant
Advantage, but higher manufacturing cost is difficult to meet the requirement of its agricultural extension.
Summary of the invention
High, the problem of agricultural extension hardly possible, mesh of the present invention for the above-mentioned douche of micropore ceramics in the prior art manufacturing cost
Be, a kind of method that dry-pressing combination vacuum atomizing prepares cell concrete douche is provided.
In order to realize that above-mentioned task, the present invention take technical solution below:
A kind of method that dry-pressing combination vacuum atomizing prepares cell concrete douche, which is characterized in that follow these steps
It carries out:
(a) sand acquired from natural battle field is screened, obtains the fine sand that partial size is 0.18~1.7 millimeter, it will
Fine sand is mixed in proportion with cement and is poured into ball grinder, is calculated in mass percent, and cement accounts for the 12~24% of mixing gross mass, separately
The alumina balls that 15~25 diameters are 8~12 millimeters are added in outer every 100 grams of mixings, it is dry to mixing using tumbling ball mill
It is sufficiently mixed mixing uniformly within ball milling 0.5~1.0 hour；
(b) the good mixing of ball milling is poured into cement mortar mixer, sprayed while stirring mass concentration be 10~
25% silica solution, according to cement content in the concentration of silica solution and mixing, it is molten that every 100 grams of cement sprays about 20~35 grams of silicon
Glue；After silica solution is sprayed, mixing continues stirring 10~20 minutes, is subsequently poured into mold, using the pressure of 5~10MPa
Douche green body is made in dry-pressing, and pressure maintaining opened mold after 15~30 seconds, and the douche green body being molded is taken out；
(c) douche green body is placed in closed organic glass case, it is true with the use of being connected with organic glass case
Sky pump and atomizing humidifier, vacuumize douche green body and wet operations；When specific maintenance, connection vacuum pump is first opened
With the pipeline valve of organic glass case, start vacuum pump organic glass case is vacuumized, when in organic glass case air pressure less than 0.5
×105Pipeline valve is closed when Pa；Then the pipeline valve of connection atomizing humidifier and organic glass case is opened, starting atomization adds
Wet device closes valve after humidifying 2.0~4.0 hours to the douche in organic glass case；It is made from douche and is put into organic glass
The day of glass case is counted, and aforesaid operations are repeated once in same time daily, continuously repeats 7~14 days；
It is additionally provided with the valve for being connected to ambient atmosphere on organic glass case, is carrying out vacuum atomizing wet operations every time
Before, the valve is first opened, the air pressure in organic glass case is slowly restored to normal pressure, then carries out vacuum atomizing humidification behaviour again
Make；It is when the operation of vacuum atomizing humidifying performance is not repeated, the valve of the connection atomizing humidifier on organic glass case and the external world is big
The valve of gas connection is normally opened, starts atomizing humidifier in the set time daily, to the douche atomizing humidifying performance in organic glass case
0.5~1.0 hour, which repeated always to douche to conserve to terminate, and obtained cell concrete douche.
The method that dry-pressing combination vacuum atomizing of the invention prepares cell concrete douche, has compared with prior art
Following characteristics:
1, cell concrete douche intensity using method provided by the invention preparation is high, flow is big, has and micropore
The same excellent hydraulic performance of ceramic douche.Pass through the content of cement, the partial size of sand and vacuum atomizing in feed change
The parameter of technique can effectively adjust the open porosity of cell concrete douche, realize the accurate control to douche water percolating capacity
System.Importantly, due to which the raw material for preparing cell concrete douche is cement and sand cheap and easy to get, and compared to micro-
The sintering process that ceramics douche preparation in hole uses, vacuum atomizing maintaining process power consumption is seldom, therefore manufacturing cost is far below micro-
Hole ceramics douche.
2, common concrete component is to be mixed in a certain ratio cement, sand and water slurry after-pouring is made to form.
The concrete component of pouring molding is almost without open pore, therefore our daily seen concrete components are all waterproof.Equally,
Do not have seepage of water using the concrete douche of pouring molding yet.The present invention is few by spraying into the mixing of cement and sand
Then mixing is molded into douche green body using the method for dry-pressing as bonding agent by the silica solution of amount.Dry-pressing formed pours water
Device green body internal porosity, which communicates with each other, not to be closed, and ensure that the open porosity requirement of cell concrete douche.In addition, raw material
In silica solution adhesive strength with higher, can be demoulded at once after douche is dry-pressing formed, douche is greatly saved
Setting time.
3, lower using douche green body initial strength made of dry pressing, water spray or leaching cannot be directly used in maintenance
Bubble, otherwise the micro-structure of douche can collapse, and be closed the open pore of script inside douche, open porosity is tight
It reduces again, is unable to satisfy the hydraulic performance requirement of douche, douche is completely impermeable when serious.Using maintenance side of the invention
Douche is put into closed organic glass case, is conserved using the method for atomizing humidifying performance to douche, in douche by method
The open pore of portion's script will not be closed, and douche is made to have excellent permeability performance.In addition, being carried out every time to douche
Before atomizing humidifying performance, first organic glass case is vacuumized, the closed stomata of a part script inside douche can also be opened, be made
Become open pore, further increase the open porosity of douche, improve the permeability performance of douche.
The present invention uses the hole inside dry pressure formed douche green body for interconnected open pore, this is this hair
One of bright critical process.The maintenance process humidified using vacuum atomizing, can both be such that douche is sufficiently conserved, and guarantee to pour water
Device mechanical property with higher, and in the case where the open pore inside douche green body can be made not to be closed, further mention
The open porosity of high douche, this is the two of key technology of the invention.
It includes cement, fine sand and silica solution that the present invention, which prepares the raw material that cell concrete douche uses,.Cement is commercially available
Construction material, using the common ordinary portland cement marked as P.O32.5, P.O42.5, P.O52.5 in market.In order to
Reduce the manufacturing cost of douche, preferably cheap low grade P.O32.5 cement.In order to meet the seepage of water of douche
It can require, the open pore inside cell concrete douche is best with micron order, therefore should use the lesser fine sand of partial size.This
Inventing the fine sand used is excavated from natural battle field, does not need to buy, the manufacturing cost of douche can be greatly lowered.Silicon
Colloidal sol is a kind of cheap commercially available industrial preparation, and the present invention is of less demanding to the concentration of silica solution, SiO in silica solution2's
Concentration only needs >=10%.When being conserved using method provided by the invention to cell concrete douche, vacuumizes and be atomized
Wet operations need to only expend seldom electricity, prepare electricity spent by micropore ceramics douche far below high-temperature sintering process.
In conclusion preparing cell concrete douche using method provided by the invention, manufacturing cost is far below micro-
Hole ceramics douche, and passage capacity is tested, and cell concrete douche has excellent mechanical property same as micropore ceramics
Energy and permeability performance.
Detailed description of the invention
Fig. 1 is the flow chart that dry-pressing combination vacuum atomization of the invention prepares cell concrete douche；
Fig. 2 is the schematic device that the present invention carries out vacuum atomizing maintenance to cell concrete douche；
Fig. 3 is the assembling schematic diagram of cell concrete douche of the invention；
Fig. 4 is the infiltration photo of cell concrete douche of the invention in different heads.
The present invention is described in further detail with reference to the accompanying drawings and examples.
Specific embodiment
Embodiment 1:
The dry-pressing combination vacuum atomization of the present embodiment prepares the process of cell concrete douche as shown in Figure 1:
The sieve that the sand excavated from battle field is successively crossed to 12 mesh and 18 mesh, selecting particle size range is 1.0~1.7 millimeters
Sand.The sand selected is mixed with the cement marked as P.O32.5 in the ratio of 80:20 and is poured into ball grinder, every 100 grams mixed
The alumina balls that 15~25 diameters are 8~12 millimeters are added in material, is mixed 1.0 hours and is mixed using tumbling ball mill
Material.Mixing is poured into cement mortar mixer, spray concentration on one side stir while for 10% silica solution, every 100 grams of cement
The silica solution of 35 grams of sprinkling.After silica solution is sprayed, mixing continues stirring 15 minutes, is subsequently poured into mold using 10MPa
Pressure be molded into douche, pressure maintaining opened mold after 30 seconds.Douche green body is taken out, closed organic glass is neatly placed in
In glass case, the pipeline valve 1 of connection vacuum pump and organic glass case is opened, starting vacuum pump vacuumizes organic glass case, when
Air pressure reaches 0.48 × 10 in organic glass case5When Pa, pipeline valve 1 is closed.Open connection atomizing humidifier and organic glass
The pipeline valve 2 of case, starting atomizing humidifier close valve 2 to douche atomizing humidifying performance 3.0 hours in organic glass case.
From above-mentioned vacuum atomizing operation is pressed and molded from douche and is put into organic glass case, one is repeated in same time daily
It is secondary, it continuously repeats 14 days, valve 3 is first opened before each repetitive operation, the air pressure in organic glass case is slowly restored to normal
Pressure.Since the 15th day, by organic glass case valve 2 and valve 3 it is normally opened, daily only same time start atomizing humidifying performance
Device, to douche atomizing humidifying performance 1.0 hours in organic glass case, what which repeated to conserve to douche always tied on the 28th day
Beam obtains cell concrete douche.
The cell concrete douche conserved is taken out and is dried, is tested for the property, test result is referring to table 1.It pours water
The open porosity of device is 23.4%, and average pore size is 2.6 microns, flexural strength 3.1MPa, stream of the douche in 3 meters of heads
Amount is 2.23L/h.
Embodiment 2:
The dry-pressing combination vacuum atomization of the present embodiment prepares the process of cell concrete douche as shown in Figure 1:
The sieve that the sand excavated from battle field is successively crossed to 18 mesh and 30 mesh, selecting particle size range is 0.6~1.0 millimeter
Sand.The sand selected is mixed with the cement marked as P.O32.5 in the ratio of 82:18 and is poured into ball grinder, every 100 grams mixed
The alumina balls that 15~25 diameters are 8~12 millimeters are added in material, is mixed 0.5 hour and is mixed using tumbling ball mill
Material.Mixing is poured into cement mortar mixer, spray concentration on one side stir while for 15% silica solution, every 100 grams of cement
The silica solution of 30 grams of sprinkling.After silica solution is sprayed, mixing continues stirring 20 minutes, is subsequently poured into mold using 8MPa's
Pressure is molded into douche, and pressure maintaining opened mold after 20 seconds.Douche green body is taken out, closed organic glass is neatly placed in
In case, the pipeline valve 1 of connection vacuum pump and organic glass case is opened, starting vacuum pump vacuumizes organic glass case, when having
Air pressure reaches 0.45 × 10 in machine glass box5When Pa, pipeline valve 1 is closed.Open connection atomizing humidifier and organic glass case
Pipeline valve 2, starting atomizing humidifier closes valve 2 to douche atomizing humidifying performance 2.5 hours in organic glass case.On
State vacuum atomizing operation be pressed and molded from douche and be put into organic glass case from, be repeated once daily in same time,
It continuously repeats 10 days, valve 3 is first opened before each repetitive operation, the air pressure in organic glass case is slowly restored to normal pressure.
Since the 11st day, by organic glass case valve 2 and valve 3 it is normally opened, daily only same time start atomizing humidifier,
To douche atomizing humidifying performance 1.0 hours in organic glass case, which repeated always to what douche conserved to terminate for the 28th day,
Obtain cell concrete douche.
Cell concrete douche is taken out and is dried, is tested for the property, test result is referring to table 1.The opening of douche
Porosity is 25.5%, and average pore size is 2.6 microns, flexural strength 2.9MPa, and douche is in the flow of 3 meters of heads
2.68L/h。
Embodiment 3:
The dry-pressing combination vacuum atomization of the present embodiment prepares the process of cell concrete douche as shown in Figure 1:
The sieve that the sand excavated from battle field is successively crossed to 30 mesh and 80 mesh, selecting particle size range is 0.18~0.6 millimeter
Sand.The sand selected is mixed with the cement marked as P.O42.5 in the ratio of 82:18 and is poured into ball grinder, every 100 grams
The alumina balls that 15~25 diameters are 8~12 millimeters are added in mixing, is mixed 0.5 hour and is mixed using tumbling ball mill
Material.Mixing is poured into cement mortar mixer, spray concentration on one side stir while for 15% silica solution, every 100 grams of cement
The silica solution of 25 grams of sprinkling.After silica solution is sprayed, mixing continues stirring 15 minutes, is subsequently poured into mold using 5MPa's
Pressure is molded into douche, and pressure maintaining opened mold after 20 seconds.Douche green body is taken out, closed organic glass is neatly placed in
In case, the pipeline valve 1 of connection vacuum pump and organic glass case is opened, starting vacuum pump vacuumizes organic glass case, when having
Air pressure reaches 0.42 × 10 in machine glass box5When Pa, pipeline valve 1 is closed.Open connection atomizing humidifier and organic glass case
Pipeline valve 2, starting atomizing humidifier closes valve 2 to douche atomizing humidifying performance 3.5 hours in organic glass case.On
State vacuum atomizing operation be pressed and molded from douche and be put into organic glass case from, be repeated once daily in same time,
It continuously repeats 8 days, valve 3 is first opened before each repetitive operation, the air pressure in organic glass case is slowly restored to normal pressure.From
Start within 9th day, by organic glass case valve 2 and valve 3 it is normally opened, daily only same time start atomizing humidifier, it is right
Douche atomizing humidifying performance in organic glass case 0.5 hour, the operation are repeated always to what douche conserved to terminate for the 28th day, be obtained
To cell concrete douche.
Cell concrete douche is taken out and is dried, is tested for the property, test result is referring to table 1.The opening of douche
Porosity is 28.8%, and average pore size is 2.5 microns, flexural strength 2.8MPa, and douche is in the flow of 3 meters of heads
3.02L/h。
Embodiment 4:
The dry-pressing combination vacuum atomization of the present embodiment prepares the process of cell concrete douche as shown in Figure 1:
The sieve that the sand excavated from battle field is successively crossed to 12 mesh and 18 mesh, selecting particle size range is 1.0~1.7 millimeters
Sand.The sand selected is mixed with the cement marked as P.O52.5 in the ratio of 85:15 and is poured into ball grinder, every 100 grams mixed
The alumina balls that 15~25 diameters are 8~12 millimeters are added in material, is mixed 1.0 hours and is mixed using tumbling ball mill
Material.Mixing is poured into cement mortar mixer, spray concentration on one side stir while for 20% silica solution, every 100 grams of cement
The silica solution of 25 grams of sprinkling.After silica solution is sprayed, mixing continues stirring 20 minutes, is subsequently poured into mold using 8MPa's
Pressure is molded into douche, and pressure maintaining opened mold after 20 seconds.Douche green body is taken out, closed organic glass is neatly placed in
In case, the pipeline valve 1 of connection vacuum pump and organic glass case is opened, starting vacuum pump vacuumizes organic glass case, works as glass
Air pressure reaches 0.42 × 10 in glass case5When Pa, pipeline valve 1 is closed.Open the pipe of connection atomizing humidifier and organic glass case
Road valve 2, starting atomizing humidifier close valve 2 to douche atomizing humidifying performance 3.5 hours in organic glass case.It is above-mentioned true
From empty nebulisation operation is pressed and molded from douche and is put into organic glass case, it is repeated once daily in same time, continuously
It repeats 8 days, valve 3 is first opened before each repetitive operation, the air pressure in organic glass case is slowly restored to normal pressure.From the 9th
It starts, by organic glass case valve 2 and valve 3 it is normally opened, daily only same time start atomizing humidifier, to organic
Douche atomizing humidifying performance in glass box 0.5 hour, the operation are repeated always to what douche conserved to terminate for the 28th day, be obtained micro-
Hole concrete douche.
Cell concrete douche is taken out from organic glass case and is dried, is tested for the property, test result is referring to table 1.
The open porosity of douche is 31.5%, and average pore size is 2.5 microns, flexural strength 2.6MPa, and douche is in 3 meters of heads
Flow be 3.56L/h.
Table 1:
Claims (1)
1. a kind of method that dry-pressing combination vacuum atomizing prepares cell concrete douche, follows these steps to carry out:
(a) sand acquired from natural battle field is screened, the fine sand that partial size is 0.18~1.7 millimeter is obtained, by fine sand
It mixes and pours into ball grinder in proportion with cement, be calculated in mass percent, cement accounts for the 12~24% of mixing gross mass, in addition often
The alumina balls that 15~25 diameters are 8~12 millimeters are added in 100 grams of mixings, mixing dry bulb is ground using tumbling ball mill
It is sufficiently mixed mixing uniformly within 0.5~1.0 hour；
(b) the good mixing of ball milling is poured into cement mortar mixer, it is 10~25% that mass concentration is sprayed while stirring
Silica solution, according to cement content in the concentration of silica solution and mixing, every 100 grams of cement sprays 20~35 grams of silica solution；Silicon is molten
After glue is sprayed, mixing continues stirring 10~20 minutes, is subsequently poured into mold, is made of the pressure dry-pressing of 5~10MPa
Douche green body, which is characterized in that pressure maintaining opened mold after 15~30 seconds, and the douche green body being molded is taken out；
(c) douche green body is placed in closed organic glass case, with the use of the vacuum pump being connected with organic glass case
And atomizing humidifier, douche green body is vacuumized and wet operations；When specific maintenance, first opens connection vacuum pump and have
The pipeline valve of machine glass box, starting vacuum pump vacuumize organic glass case, when in organic glass case air pressure less than 0.5 ×
105Pipeline valve is closed when Pa；Then the pipeline valve for opening connection atomizing humidifier and organic glass case, starts atomizing humidifying performance
Device closes valve after humidifying 2.0~4.0 hours to the douche in organic glass case；It is made from douche and is put into organic glass
The day of case is counted, and aforesaid operations are repeated once in same time daily, continuously repeats 7~14 days；
The valve for being connected to ambient atmosphere is additionally provided on organic glass case, every time carry out vacuum atomizing wet operations it
Before, the valve is first opened, the air pressure in organic glass case is slowly restored to normal pressure, then carries out vacuum atomizing humidification behaviour again
Make；It is when the operation of vacuum atomizing humidifying performance is not repeated, the valve of the connection atomizing humidifier on organic glass case and the external world is big
The valve of gas connection is normally opened, starts atomizing humidifier in the set time daily, to the douche atomizing humidifying performance in organic glass case
0.5~1.0 hour, which repeated always to douche to conserve to terminate, and obtained cell concrete douche.
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| CN103553571B (en) * | 2013-10-14 | 2015-05-27 | 西北农林科技大学 | Preparation method of buried micropore ceramic root-irrigation emitter |
| CN104798665A (en) * | 2015-04-10 | 2015-07-29 | 河海大学 | Novel micro-porous ceramic irrigation emitter for infiltrating irrigation technology and preparation method thereof |
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2016
- 2016-10-09 CN CN201610880496.5A patent/CN106565191B/en not_active Expired - Fee Related
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