CN107586091A - A kind of preparation method of stalk brick - Google Patents
A kind of preparation method of stalk brick Download PDFInfo
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- CN107586091A CN107586091A CN201710993364.8A CN201710993364A CN107586091A CN 107586091 A CN107586091 A CN 107586091A CN 201710993364 A CN201710993364 A CN 201710993364A CN 107586091 A CN107586091 A CN 107586091A
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Abstract
The invention discloses a kind of preparation method of stalk brick, it is related to straw building field of material technology, comprises the following steps：S1, stalk pretreatment：By agricultural crop straw after air low temperature plasma is handled, water, MTES, magnesia powder are added, high-speed stirred, drying, obtains modified straw section；S2, batch mixing：Add water into magnesium oxysulfide binder materials, inorganic gel agent is made, is added in modified straw section, stirs, obtain compound；S3, embryo processed：Compound is mated formation into mould, it is compressing, obtain idiosome；S4, calcining：Dried idiosome is sent into anaerobic calcining kiln and calcined, is produced.Stalk brick intensity produced by the present invention is good, place for a long time it is indeformable, insulation, from heavy and light, alternative common brick is used for construction material.
Description
Technical field
The present invention relates to straw building field of material technology, more particularly to a kind of preparation method of stalk brick.
Background technology
China's building total energy consumption (including production of construction materials and building energy consumption) is huge, the 30% of national energy consumption is accounted for, wherein building
Material energy consumption accounts for more than the 12% of national total energy consumption, and it is to save energy that materials for wall innovation is promoted for this and promotes energy saving building
The effective measures in source.China enriches as large agricultural country, stalk resource, and the building material product processed using stalk has wide answer
With space, on the one hand can solve a large amount of crop straw burnings and cause problem of environmental pollution；On the other hand have found newly to agricultural crop straw
Outlet, can turn waste into wealth, for peasant's extra earning increase newly channel.And the production cost of such product is relatively low, and properties of product are excellent
More the advantages that, such product will be caused to have the stronger market competitiveness.
Complex-shaped irregular due to stalk, the space between stalk is very big, and stalk surface is contained and is unfavorable for gluing
Material, it is difficult to obtain satisfied bonding strength, stalk deformation is larger after size press, has certain restorability, places one
The section time can deform.Therefore, the stalk brick intensity of preparation is general.
The content of the invention
Based on technical problem existing for background technology, the present invention proposes a kind of preparation method of stalk brick.
A kind of preparation method of stalk brick proposed by the present invention, technical scheme are as follows：
A kind of preparation method of stalk brick, comprises the following steps：
S1, stalk pretreatment：Agricultural crop straw is dried, rolled, cuts, it is low that the stalk section after cutting is added to air
In the reative cell of isothermal plasma processor, discharge process, water, the ethoxy of methyl three are added to the stalk section after corona treatment
Base silane, magnesia powder, high-speed stirred, drying, obtain modified straw section；
S2, batch mixing：Add water into magnesium oxysulfide binder materials, inorganic gel agent is made, manufactured inorganic gel agent is added
Into modified straw section, stir, obtain compound；
S3, embryo processed：Compound is mated formation into mould, it is compressing under 25-30Mpa, obtain idiosome；
S4, calcining：Dried idiosome is sent into anaerobic calcining kiln and calcined, is produced.
Preferably, crops cut into 1-5mm in the step S1.
Preferably, the discharge power of air Low Temperature Plasma Treating is 0.5-1.0W/kg in the step S1, during processing
Between be 1-3min.
Preferably, the mass ratio of MTES, magnesia powder and stalk is 5-10: 5-10 in the step S1
∶100。
Preferably, stir speed (S.S.) is 4000-5000r/min in the step S1.
Preferably, magnesium oxysulfide binder materials is composed of the following raw materials by weight in the step S2：MgO 60-70 parts,
MgSO420-30 parts, MgCO315-25 parts, CaSO47-15 parts, NaSiO35-10 parts.
Preferably, the mass ratio of modified straw section and magnesium oxysulfide binder materials is 70-80: 20-30 in the step S2.
Preferably, concrete operations are calcined in the step S4 is：2-3h first is calcined at 100-120 DEG C, is warming up to 380-
20-40min is calcined at 400 DEG C, is cooled at 240-260 DEG C and calcines 4-5h.
Preferably, the heating rate is 7-12 DEG C/min, and rate of temperature fall is 5-10 DEG C/min.
Compared with prior art, beneficial effects of the present invention are as follows：The present invention by after stalk segment through air low temperature etc. from
Daughter is handled, and stalk surface introduces the oxy radicals such as substantial amounts of hydroxyl, carboxyl, adds MTES, oxidation
Magnesium powder is modified, and effectively improve has between stalk wettability of the surface and glue performance, and magnesium oxysulfide binder materials
Good bonding strength, the careless embryo of compacting is subjected to anaerobic calcination processing, is carbonized in three stages, causes idiosome within a certain period of time
Interior section is carbonized, and enhances the intensity of brick body；Stalk brick intensity produced by the present invention is good, places indeformable, insulation, suction for a long time
Sound, from heavy and light, alternative common brick it is used for construction material.
Embodiment
Below, technical scheme is described in detail by specific embodiment.
Embodiment 1
A kind of preparation method of stalk brick, comprises the following steps：
S1, stalk pretreatment：Agricultural crop straw is dried, rolled, cuts, it is low that the stalk section after cutting is added to air
In the reative cell of isothermal plasma processor, discharge process, water, the ethoxy of methyl three are added to the stalk section after corona treatment
Base silane, magnesia powder, high-speed stirred, drying, obtain modified straw section；
S2, batch mixing：Add water into magnesium oxysulfide binder materials, inorganic gel agent is made, manufactured inorganic gel agent is added
Into modified straw section, stir, obtain compound；
S3, embryo processed：Compound is mated formation into mould, it is compressing under 25Mpa, obtain idiosome；
S4, calcining：Dried idiosome is sent into anaerobic calcining kiln and calcined, is produced.
Embodiment 2
A kind of preparation method of stalk brick, comprises the following steps：
S1, stalk pretreatment：Agricultural crop straw is dried, rolled, cuts into 1mm, the stalk section after cutting is added to
In the reative cell of air low temperature plasma processor, discharge process, water, methyl are added to the stalk section after corona treatment
Triethoxysilane, magnesia powder, wherein, the mass ratio of MTES, magnesia powder and stalk is 7: 8: 100,
High-speed stirred, drying, obtains modified straw section；
S2, batch mixing：According to following 60 parts of proportioning MgO, MgSO430 parts, MgCO315 parts, CaSO415 parts, NaSiO3 5
Part, mixing composition obtains magnesium oxysulfide binder materials, adds water, inorganic gel agent is made, manufactured inorganic gel agent is added to and changed
In property stalk section, stir, obtain compound；
S3, embryo processed：Compound is mated formation into mould, it is compressing under 28Mpa, obtain idiosome；
S4, calcining：Dried idiosome is sent into anaerobic calcining kiln and calcined, first 2h is calcined at 100 DEG C, is warming up to
20min is calcined at 380 DEG C, is cooled at 240 DEG C and calcines 4h, produce.
Embodiment 3
A kind of preparation method of stalk brick, comprises the following steps：
S1, stalk pretreatment：Agricultural crop straw is dried, rolled, cuts into 2mm, the stalk section after cutting is added to
In the reative cell of air low temperature plasma processor, discharge process, discharge power 0.5W/kg, processing time 1min, to
Stalk section after corona treatment adds water, MTES, magnesia powder, MTES, oxidation
The mass ratio of magnesium powder and stalk is 5: 10: 100, with 5000r/min speed high-speed stirred, drying, obtains modified straw section；
S2, batch mixing：According to following 65 parts of proportioning MgO, MgSO425 parts, MgCO320 parts, CaSO410 parts, NaSiO3 8
Part, mixing composition obtains magnesium oxysulfide binder materials, adds water, inorganic gel agent is made, manufactured inorganic gel agent is added to and changed
Property stalk section in, the mass ratio of modified straw section and magnesium oxysulfide binder materials is 70: 30, stirs, obtains compound；
S3, embryo processed：Compound is mated formation into mould, it is compressing under 25Mpa, obtain idiosome；
S4, calcining：Dried idiosome is sent into anaerobic calcining kiln and calcined, first at 110 DEG C calcines 2.5h, with 7 DEG C/
Min speed is warming up at 390 DEG C and calcines 30min, is cooled to 5 DEG C/min speed at 250 DEG C and calcines 4h, produced.
Embodiment 4
A kind of preparation method of stalk brick, comprises the following steps：
S1, stalk pretreatment：Agricultural crop straw is dried, rolled, cuts into 3mm, the stalk section after cutting is added to
In the reative cell of air low temperature plasma processor, discharge process, discharge power 0.8W/kg, processing time 2min, to
Stalk section after corona treatment adds water, MTES, magnesia powder, MTES, oxidation
The mass ratio of magnesium powder and stalk is 10: 5: 100, with 4000r/min speed high-speed stirred, drying, obtains modified straw section；
S2, batch mixing：According to following 70 parts of proportioning MgO, MgSO420 parts, MgCO325 parts, CaSO47 parts, NaSiO3 10
Part, mixing composition obtains magnesium oxysulfide binder materials, adds water, inorganic gel agent is made, manufactured inorganic gel agent is added to and changed
Property stalk section in, the mass ratio of modified straw section and magnesium oxysulfide binder materials is 80: 20, stirs, obtains compound；
S3, embryo processed：Compound is mated formation into mould, it is compressing under 27Mpa, obtain idiosome；
S4, calcining：Dried idiosome is sent into anaerobic calcining kiln and calcined, first at 120 DEG C calcines 3h, with 10 DEG C/
Min speed is warming up at 400 DEG C and calcines 40min, is cooled to 7 DEG C/min speed at 260 DEG C and calcines 5h, produced.
Embodiment 5
A kind of preparation method of stalk brick, comprises the following steps：
S1, stalk pretreatment：Agricultural crop straw is dried, rolled, cuts into 5mm, the stalk section after cutting is added to
In the reative cell of air low temperature plasma processor, discharge process, discharge power 1.0W/kg, processing time 3min, to
Stalk section after corona treatment adds water, MTES, magnesia powder, MTES, oxidation
The mass ratio of magnesium powder and stalk is 7: 8: 100, with 4500r/min speed high-speed stirred, drying, obtains modified straw section；
S2, batch mixing：According to following 64 parts of proportioning MgO, MgSO426 parts, MgCO318 parts, CaSO412 parts, NaSiO3 6
Part, mixing composition obtains magnesium oxysulfide binder materials, adds water, inorganic gel agent is made, manufactured inorganic gel agent is added to and changed
Property stalk section in, the mass ratio of modified straw section and magnesium oxysulfide binder materials is 75: 25, stirs, obtains compound；
S3, embryo processed：Compound is mated formation into mould, it is compressing under 30Mpa, obtain idiosome；
S4, calcining：Dried idiosome is sent into anaerobic calcining kiln and calcined, first at 110 DEG C calcines 2h, with 12 DEG C/
Min speed is warming up at 400 DEG C and calcines 30min, is cooled to 10 DEG C/min speed at 250 DEG C and calcines 4.5h, produced.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (9)
1. a kind of preparation method of stalk brick, it is characterised in that comprise the following steps：
S1, stalk pretreatment：Agricultural crop straw is dried, rolled, cuts, the stalk section after cutting is added to air low temperature etc.
In the reative cell of ion body processor, discharge process, water, methyltriethoxy silane are added to the stalk section after corona treatment
Alkane, magnesia powder, high-speed stirred, drying, obtain modified straw section；
S2, batch mixing：Add water into magnesium oxysulfide binder materials, inorganic gel agent is made, manufactured inorganic gel agent is added to and changed
In property stalk section, stir, obtain compound；
S3, embryo processed：Compound is mated formation into mould, it is compressing under 25-30Mpa, obtain idiosome；
S4, calcining：Dried idiosome is sent into anaerobic calcining kiln and calcined, is produced.
2. the preparation method of stalk brick as claimed in claim 1, it is characterised in that crops cut into 1- in the step S1
5mm。
3. the preparation method of stalk brick as claimed in claim 1, it is characterised in that air low-temperature plasma in the step S1
The discharge power of body processing is 0.5-1.0W/kg, processing time 1-3min.
4. the preparation method of stalk brick as claimed in claim 1, it is characterised in that methyltriethoxy silane in the step S1
The mass ratio of alkane, magnesia powder and stalk is 5-10：5-10：100.
5. the preparation method of stalk brick as claimed in claim 1, it is characterised in that stir speed (S.S.) is in the step S1
4000-5000r/min。
6. the preparation method of stalk brick as claimed in claim 1, it is characterised in that magnesium oxysulfide binder materials in the step S2
It is composed of the following raw materials by weight：MgO 60-70 parts, MgSO420-30 parts, MgCO315-25 parts, CaSO47-15 parts,
NaSiO35-10 parts.
7. the preparation method of stalk brick as claimed in claim 1, it is characterised in that modified straw section and sulphur in the step S2
The mass ratio of oxygen magnesium binder materials is 70-80：20-30.
8. the preparation method of stalk brick as claimed in claim 1, it is characterised in that calcine concrete operations in the step S4
For：2-3h first is calcined at 100-120 DEG C, is warming up at 380-400 DEG C and calcines 20-40min, be cooled at 240-260 DEG C and forge
Burn 4-5h.
9. the preparation method of stalk brick as claimed in claim 8, it is characterised in that the heating rate is 7-12 DEG C/min,
Rate of temperature fall is 5-10 DEG C/min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710993364.8A CN107586091A (en) | 2017-10-23 | 2017-10-23 | A kind of preparation method of stalk brick |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710993364.8A CN107586091A (en) | 2017-10-23 | 2017-10-23 | A kind of preparation method of stalk brick |
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| Publication Number | Publication Date |
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| CN107586091A true CN107586091A (en) | 2018-01-16 |
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ID=61043607
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114524940A (en) * | 2022-02-22 | 2022-05-24 | 江苏省农业科学院 | Method for modifying surface of wheat straw based on plasma and hyperbranched coupling |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004099102A2 (en) * | 2003-05-09 | 2004-11-18 | Simem S.R.L. | Composition for blocks for masonry and facing and method for their production |
| CN102617109A (en) * | 2012-04-10 | 2012-08-01 | 张东涛 | Energy-saving and environment-friendly straw brick and preparation method thereof |
| CN103435759A (en) * | 2013-08-23 | 2013-12-11 | 江苏大学 | Straw surface treatment and graft modification method |
| CN103804940A (en) * | 2014-02-21 | 2014-05-21 | 福建农林大学 | Atmospheric pressure cold plasma modifying method for plant fiber and application of modifying method in wood-plastic composite material |
| CN104529394A (en) * | 2014-12-08 | 2015-04-22 | 王之永 | Method for preparing floor tile by using straw |
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2017
- 2017-10-23 CN CN201710993364.8A patent/CN107586091A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004099102A2 (en) * | 2003-05-09 | 2004-11-18 | Simem S.R.L. | Composition for blocks for masonry and facing and method for their production |
| CN102617109A (en) * | 2012-04-10 | 2012-08-01 | 张东涛 | Energy-saving and environment-friendly straw brick and preparation method thereof |
| CN103435759A (en) * | 2013-08-23 | 2013-12-11 | 江苏大学 | Straw surface treatment and graft modification method |
| CN103804940A (en) * | 2014-02-21 | 2014-05-21 | 福建农林大学 | Atmospheric pressure cold plasma modifying method for plant fiber and application of modifying method in wood-plastic composite material |
| CN104529394A (en) * | 2014-12-08 | 2015-04-22 | 王之永 | Method for preparing floor tile by using straw |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114524940A (en) * | 2022-02-22 | 2022-05-24 | 江苏省农业科学院 | Method for modifying surface of wheat straw based on plasma and hyperbranched coupling |
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Application publication date: 20180116 |