CN107235707A - A kind of silt sintering brick and preparation method thereof - Google Patents
A kind of silt sintering brick and preparation method thereof Download PDFInfo
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- CN107235707A CN107235707A CN201710530942.4A CN201710530942A CN107235707A CN 107235707 A CN107235707 A CN 107235707A CN 201710530942 A CN201710530942 A CN 201710530942A CN 107235707 A CN107235707 A CN 107235707A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/1321—Waste slurries, e.g. harbour sludge, industrial muds
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- 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
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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
- C04B33/20—Preparing or treating the raw materials individually or as batches for dry-pressing
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/66—Specific sintering techniques, e.g. centrifugal sintering
- C04B2235/661—Multi-step sintering
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/74—Physical characteristics
- C04B2235/77—Density
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
-
- 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
A kind of silt sintering brick and preparation method thereof, is related to technical field of environmental management, and the preparation method of silt sintering brick is to clean mud with water, and removes suspended impurity, filtering, dries 2~3 days at room temperature, is once sieved after smashing to pieces, obtain primary raw materials；Primary raw materials carries out secondary sieving after drying, ball milling, obtains mud powder；Mud powder is compressing under high pressure, and silt sintering brick is made in sintering.Also include auxiliary material in a kind of silt sintering brick, the raw material of silt sintering brick, auxiliary material includes at least one of flyash and page rock, and the mass ratio of auxiliary material and mud powder is 4~9:1.Silt sintering brick provided by the present invention and preparation method thereof, is effectively utilized the mud of dredging river, reduces the pollution to environment and river.
Description
Technical field
The present invention relates to technical field of environmental management, in particular to a kind of silt sintering brick and preparation method thereof.
Background technology
With economic fast development and the increase year by year of population, the environmental problem that industrial wastewater and sanitary sewage are brought is got over
Come more serious, the pollution of city river is also being aggravated.The pollution situation of water silt is comprehensive key factor for weighing water quality.Receive
The heavy metal major part for entering water body switchs to solid phase by aqueous phase rapidly under the effect such as physical sedimentation and chemisorbed, is deposited on river course
It in mud, may again be discharged so that the heavy metal concentration increase of water body, occurred secondary when environment changes
Pollution.Contain such as Ge, Al plurality of heavy metal harmful substance in mud, except this also contain the solid particle such as plant and animal residues and its
The floccule of condensation, causes water body to black, smelly.
Produced fine coal when the mud stacked by dredging river and thermal power plant are with central heating boiler combusting coal fines
The polluted surface waters such as ash, underground water and soil and air, have had resulted in serious environmental pollution, to the body of the people around
Health causes serious harm.So the pollution problem for how effectively handling riverway sludge and flyash well also becomes current
We utilize a great problem with sludge pollution environmental improvement to Ash Utilization.
The content of the invention
The first object of the present invention is to provide a kind of preparation method of silt sintering brick, and this method is simple to operate, pair sets
It is standby to require low, by handling mud, by mud rationally using fired brick is made, reach the effect of twice laid.
The second object of the present invention is to provide a kind of silt sintering brick, and it is effectively utilized the mud of dredging river, subtracts
The pollution to environment and river is lacked.
What embodiments of the invention were realized in：
Mud is cleaned with water, and removes suspended impurity, is filtered, dries 2~3 days, is carried out once after smashing to pieces at room temperature
Sieving, obtains primary raw materials；
Primary raw materials carries out secondary sieving after drying, ball milling, obtains mud powder；
Mud powder is compressing under high pressure, and silt sintering brick is made in sintering.
A kind of silt sintering brick, is prepared by the preparation method of above-mentioned silt sintering brick.
The beneficial effect of the embodiment of the present invention is：
The invention provides a kind of preparation method of silt sintering brick, its by mud carry out removal of impurities, once sieve, dry,
The steps such as ball milling, secondary sieving, obtain mud powder.It is again that mud powder is compressing under high pressure, sintering.It to mud by entering
Row processing, is finally made silt sintering brick, is effectively utilized the mud of dredging river, reduces the pollution to environment and river.
Present invention also offers a kind of silt sintering brick, the silt sintering brick is effectively utilized the mud of dredging river, subtracted
The pollution to environment and river is lacked.Meanwhile, the silt sintering brick intensity reaches construction material standard, with good practical valency
Value.
Embodiment
, below will be in the embodiment of the present invention to make the purpose, technical scheme and advantage of the embodiment of the present invention clearer
Technical scheme be clearly and completely described.Unreceipted actual conditions person, builds according to normal condition or manufacturer in embodiment
The condition of view is carried out.Agents useful for same or the unreceipted production firm person of instrument, are the conventional production that can be obtained by commercially available purchase
Product.
A kind of silt sintering brick of the embodiment of the present invention and preparation method thereof is specifically described below.
The embodiments of the invention provide a kind of preparation method of silt sintering brick, including：
S1. mud is cleaned with water, and removes suspended impurity, filtered, dried 2~3 days at room temperature, one is carried out after smashing to pieces
Secondary sieving, obtains primary raw materials；
Preferably, the screen number once sieved is 2~10 mesh, is found by the creative work of inventor, in the ratio
Can be by the reluctant bulk particle in mud in the range of example, including stone, discarded metal thing, animal remains etc. are filtered out,
The fine particle using the grains of sand as main component is left, facilitates follow-up be processed further.
Primary raw materials carries out secondary sieving after drying, ball milling, obtains mud powder；Sent out by the creative work of inventor
It is existing, when the screen number of secondary sieving is 100~150 mesh, less particle can be removed from mud powder, so as to get mud
Powder is tiny.Compared with once sieving, obtained powder more uniform and smooth, in follow-up sintering process, the knot between powder
Close even closer, quality is more uniform, and obtained brick made of mud hardness and intensity are more preferable.It is excellent when primary raw materials is dried
Selection of land condition is dry 24~36h at 80~90 DEG C.Relatively low drying temperature will not allow raw material to produce qualitative change, close to 100 DEG C
Moisture in raw material can be evaporated by drying temperature and longer drying time completely.Be conducive to follow-up ball milling operation, dry
Ball milling can cause powder finer and smoother after condition, and obtained brick made of mud is firmer.The drying can under vacuum,
It can also be carried out under the conditions of air blast.Regardless of mode, dry purpose can be reached, but effect is dried under vacuum condition
Fruit can be more excellent.
A kind of preparation method for silt sintering brick that the embodiment of the present invention is provided, in addition to：
S2. mud powder is compressing under high pressure, silt sintering brick is made in sintering.
Preferably, it is by the compressing condition of mud powder：The pressurize 60s under 15~20MPa pressure.By inventor's
Creative work finds that obtained finished product brick made of mud is pressed at this pressure will have suitable density, be more suitable for
Used as building brick, kept for 60s time be also beneficial to brick made of mud and keep uniform ideal density, if the dwell time is too short,
Brick made of mud after compacting expands after may losing pressure, and overlong time, and the shaping last to brick made of mud be not obvious
Influence, but process time is elongated, cost of idle time.
The optimum condition that is sintered of mud powder after high pressure compacting is：Sintered under 1100~1160 DEG C of sintering temperature
2~4h.Sintering temperature has very important influence on brick made of mud, and inventor has found too high sintering by performing creative labour
Temperature can cause brick made of mud to occur fragility, be easily broken.Too low sintering temperature can cause brick made of mud is more soft easily to become again
Shape, suitable sintering temperature ensure that brick made of mud has suitable hardness and intensity.Mud powder after suppressing high pressure is carried out
During sintering, it is preferable that sintering temperature is to slowly warm up in the form of gradient increased temperature：First with 5 DEG C/min speed, temperature is risen to
100~200 DEG C and 30~60min of insulation；Heat up again 500~600 DEG C and 30~60min of insulation；800~900 DEG C are warming up to again
And 60~90min is incubated, then heat to 1000~1100 DEG C and be incubated 60~90min, be finally warming up to sintering temperature.Slowly
Heating sintering process raw material can slowly be heated, it is to avoid temperature change such as cracks very much at the flaw soon, to becoming silted up
The hardness and quality of adobe produce harmful effect.
Further, the process of fired brick is being prepared, auxiliary material can also be added, specific operating method is as follows：Will
Mud powder is mixed with auxiliary material, and mixed-powder is made.Mixed-powder is entered into horizontal high voltage compacting, sintering again, mud is made
Fired brick.Wherein, auxiliary material includes at least one of flyash and page rock.
Flyash is in flue gas after being burnt using coal dust as fuel in thermal power plant and concentrated supply of heating in the city boiler under catching
The fine ash come, flyash is the primary solids waste of coal-burning power plant's discharge, and its main oxides composition is：SiO2、Al2O3、FeO、
Fe2O3、CaO、TiO2Deng.With the development of power industry, the flyash discharge capacity of coal-burning power plant increases year by year, works as China
One of larger industrial residue of preceding discharge capacity.Substantial amounts of flyash is untreated, will produce airborne dust, pollutes air；If being discharged into water
System can cause river to silt up, and toxic chemical substance therein can also cause harm to human body and biology.
Page rock is a kind of sedimentary rock, complicated component, but the joint all with thin laminated or thin slice stratiform, mainly by sticking
The rock that soil deposition is formed through pressure and temperature, but wherein it is contaminated with quartz, the chip of feldspar and other chemical substances.Typically
In the case of, the main oxides composition of page rock is：SiO2、Al2O3、Fe2O3, CaO, MgO etc., be mainly used to produce ceramic product
Fired brick is produced with the primary raw material as sintering brick product.
One kind in flyash and page rock is added in mud, by by flyash and mud mixed processing, to sacrifice
A little intensity is cost, it is possible to achieve is administered while to flyash and mud, realizes the resource reutilization of flyash and mud.
During preparation raw material, it is preferable that according to the mass fraction, the mass ratio of mud powder and auxiliary material is：4~9:1.Invention
People had found by performing creative labour, when mud powder and the mass ratio of auxiliary material within the above range when, it is final obtained to become silted up
The hardness and intensity of adobe are higher, and suitable construction material is used, and may be such that mud and flyash are all suitably applied.
Further, auxiliary material need also exist for through crushing, grind and cross 100~150 mesh sieves, so as to get powder material
Material keeps close granularity with mud powder, auxiliary material and mud powder is obtained in sintering process with even closer combination
The fired brick quality arrived is more uniform, and intensity is higher.
A kind of silt sintering brick, is prepared by the preparation method of above-mentioned silt sintering brick.The silt sintering brick is utilized
Riverway sludge sintering is formed, and has reached the purpose of twice laid, effectively alleviates the problem of river course silting and pollution.Meanwhile,
The silt sintering brick has reached the intensity requirement of construction material, further increases its practicality.
The feature and performance to the present invention are described in further detail with reference to embodiments.
Embodiment 1：
A kind of silt sintering brick is present embodiments provided, its preparation method is as follows：
S1. mud is cleaned with water, removes the light impurities emerged, filtering, and dried 2 days at room temperature, it is laggard
Row processing in small, broken bits, crosses 2 mesh sieves and removes the impurity such as the stone of bulky grain, obtain primary raw materials.
S2. primary raw materials is dried at 80 DEG C and 150 mesh sieves is crossed after 24h, ball milling, obtain mud powder.
S3. the above-mentioned mud powder of 2.56kg is mixed with 0.64kg granularities for the flyash of 150 mesh, obtains mixed-powder.
S4. mixed-powder is suppressed under 15MPa pressure, dwell time 60s, is pressed into profile for right angle hexahedron
Green briquette is standby to be burnt, its long 240mm, width 115mm, high 53mm.
S5., green briquette is warming up to 1100 DEG C of temperature sintering 2h by the way of temperature programming, with stove natural cooling, obtained
Required silt sintering brick.
Wherein, the mode of temperature programming is：Carried out in the heat stepwise mode of 5 DEG C/min speed, i.e., be first warming up to 100 DEG C
And be incubated 30min, 500 DEG C are warming up to again and be incubated 30min, 800 DEG C are warming up to again and 60min is incubated, then heat to 1000
DEG C and be incubated 60min, be finally warming up to 1100 DEG C and be incubated 120min, be hereafter to obtain silt sintering brick with stove natural cooling.
Embodiment 2
A kind of silt sintering brick is present embodiments provided, its preparation method is as follows：
S1. mud is cleaned with water, removes the light impurities emerged, filtering, and dried 3 days at room temperature, it is laggard
Row processing in small, broken bits, crosses 10 mesh sieves and removes the impurity such as the stone of bulky grain, obtain primary raw materials.
S2. primary raw materials is dried at 90 DEG C and 100 mesh sieves is crossed after 36h, ball milling, obtain mud powder.
S3. the above-mentioned mud powder of 2.56kg, 0.64kg granularities are mixed for the shale stone flour of 100 mesh, obtains mixed-powder.
S4. mixed-powder is suppressed under 20MPa pressure, dwell time 90s, is pressed into profile for right angle hexahedron
Green briquette is standby to be burnt, its long 240mm, width 115mm, high 53mm.
S5., green briquette is warming up to 1160 DEG C of temperature sintering 3h by the way of temperature programming, with stove natural cooling, obtained
Required silt sintering brick.
Wherein, the mode of temperature programming is：Carried out in the heat stepwise mode of 5 DEG C/min speed, i.e., be first warming up to 150 DEG C
And be incubated 60min, 500 DEG C are warming up to again and be incubated 45min, 850 DEG C are warming up to again and 90min is incubated, then heat to 1050
DEG C and be incubated 90min, be finally warming up to 1100 DEG C and be incubated 120min, be hereafter to obtain silt sintering brick with stove natural cooling.
Embodiment 3：
A kind of silt sintering brick is present embodiments provided, its preparation method is as follows：
S1. mud is cleaned with water, removes the light impurities emerged, filtering, and dried 2.5 days at room temperature, after
Processing in small, broken bits is carried out, 5 mesh sieves is crossed and removes the impurity such as the stone of bulky grain, obtain primary raw materials.
S2. primary raw materials is dried at 85 DEG C and 120 mesh sieves is crossed after 25h, ball milling, obtain mud powder.
S3. the above-mentioned mud powder of 2.56kg is mixed with 0.64kg granularities for the flyash of 150 mesh, obtains mixed-powder.
S4. mixed-powder is suppressed under 17MPa pressure, dwell time 75s, is pressed into profile for right angle hexahedron
Green briquette is standby to be burnt, its long 240mm, width 115mm, high 53mm.
S5., green briquette is warming up to 1150 DEG C of temperature sintering 2h by the way of temperature programming, with stove natural cooling, obtained
Required silt sintering brick.
Wherein, the mode of temperature programming is：Carried out in the heat stepwise mode of 5 DEG C/min speed, i.e., be first warming up to 200 DEG C
And be incubated 60min, 600 DEG C are warming up to again and be incubated 60min, 900 DEG C are warming up to again and 70min is incubated, then heat to 1100
DEG C and be incubated 75min, be finally warming up to 1120 DEG C and be incubated 240min, be hereafter to obtain silt sintering brick with stove natural cooling.
Embodiment 4：
A kind of silt sintering brick is present embodiments provided, its preparation method is as follows：
S1. mud is cleaned with water, removes the light impurities emerged, filtering, and dried 2 days at room temperature, it is laggard
Row processing in small, broken bits, crosses 7 mesh sieves and removes the impurity such as the stone of bulky grain, obtain primary raw materials.
S2. primary raw materials is dried at 85 DEG C and 130 mesh sieves is crossed after 30h, ball milling, obtain mud powder.
S3. it is 130 purposes by the above-mentioned mud powder of 2.88kg, the flyash that 0.16kg granularities are 130 mesh and 0.16kg granularities
Shale stone flour is mixed, and obtains mixed-powder.
S4. mixed-powder is suppressed under 15MPa pressure, dwell time 60s, is pressed into profile for right angle hexahedron
Green briquette is standby to be burnt, its long 240mm, width 115mm, high 53mm.
S5., green briquette is warming up to 1140 DEG C of temperature sintering 2h by the way of temperature programming, with stove natural cooling, obtained
Required silt sintering brick.
Wherein, the mode of temperature programming is：Carried out in the heat stepwise mode of 5 DEG C/min speed, i.e., be first warming up to 150 DEG C
And be incubated 45min, 550 DEG C are warming up to again and be incubated 60min, 900 DEG C are warming up to again and 90min is incubated, then heat to 1000
DEG C and be incubated 90min, be finally warming up to 1140 DEG C and be incubated 120min, be hereafter to obtain silt sintering brick with stove natural cooling.
Embodiment 5：
A kind of silt sintering brick is present embodiments provided, its preparation method is as follows：
S1. mud is cleaned with water, removes the light impurities emerged, filtering, and dried 3 days at room temperature, it is laggard
Row processing in small, broken bits, crosses 10 mesh sieves and removes the impurity such as the stone of bulky grain, obtain primary raw materials.
S2. primary raw materials is dried at 80 DEG C and 110 mesh sieves is crossed after 25h, ball milling, obtain mud powder.
S3. by the above-mentioned mud powder of 3.1kg, the flyash that 0.05kg granularities are 110 mesh and page that 0.05kg granularities are 110 mesh
Rock Powder is mixed, and obtains mixed-powder.
S4. mixed-powder is suppressed under 18MPa pressure, dwell time 75s, is pressed into profile for right angle hexahedron
Green briquette is standby to be burnt, its long 240mm, width 115mm, high 53mm.
S5., green briquette is warming up to 1160 DEG C of temperature sintering 2h by the way of temperature programming, with stove natural cooling, obtained
Required silt sintering brick.
Wherein, the mode of temperature programming is：Carried out in the heat stepwise mode of 5 DEG C/min speed, i.e., be first warming up to 150 DEG C
And be incubated 30min, 550 DEG C are warming up to again and be incubated 45min, 900 DEG C are warming up to again and 80min is incubated, then heat to 1000
DEG C and be incubated 75min, be finally warming up to 1160 DEG C and be incubated 180min, be hereafter to obtain silt sintering brick with stove natural cooling.
Embodiment 6
This comparative example provides a kind of silt sintering brick, and its preparation method is as follows：
S1. mud is cleaned with water, removes the light impurities emerged, filtering, and dried 3 days at room temperature, it is laggard
Row processing in small, broken bits, crosses 7 mesh sieves and removes the impurity such as the stone of bulky grain, obtain primary raw materials.
S2. primary raw materials is dried at 86 DEG C and 150 mesh sieves is crossed after 24h, ball milling, obtain mud powder.
S3. the above-mentioned mud powder of 3.2kg is suppressed under 18MPa pressure, dwell time 60s, it is straight to be pressed into profile
Angle hexahedron green briquette is standby to be burnt, its long 240mm, width 115mm, high 53mm；
S4., green briquette is warming up to 1160 DEG C of temperature sintering 3h by the way of temperature programming, with stove natural cooling, obtained
Required silt sintering brick.
Wherein, the mode of temperature programming is：Carried out in the heat stepwise mode of 5 DEG C/min speed, i.e., be first warming up to 100 DEG C
And be incubated 45min, 500 DEG C are warming up to again and be incubated 30min, 800 DEG C are warming up to again and 60min is incubated, then heat to 1000
DEG C and be incubated 60min, be finally warming up to 1160 DEG C and be incubated 120min, be hereafter to obtain silt sintering brick with stove natural cooling.
Test example
Silt sintering brick obtained by above-described embodiment 1~6 is carried out to the test of rupture strength, the test is general omnipotent
Material Testing Machine is carried out.Specific method of testing reference standard GB/T/T6569 " fine ceramics bending strength test method ",
Compression strength and bulk density to above-mentioned 6 samples are tested, and test result is as shown in table 1.
The silt sintering brick test result of table 1
| Sample number into spectrum | Rupture strength | Compression strength | Bulk density |
| Embodiment 1 | 25.30MPa | 83MPa | 1800kg/m3 |
| Embodiment 2 | 27.43MPa | 83MPa | 2010kg/m3 |
| Embodiment 3 | 30.01MPa | 84MPa | 1920kg/m3 |
| Embodiment 4 | 32.08MPa | 85MPa | 1990kg/m3 |
| Embodiment 5 | 33.05MPa | 87MPa | 1980kg/m3 |
| Embodiment 6 | 40.23MPa | 90MPa | 1970kg/m3 |
As shown in the result of table 1, after tested, rupture strength and bulk density with the increase of flyash and shale stone flour
Reduction, but on the whole, rupture strength performance has reached fired brick national standard MU30 grades, can be applied as fired brick
Building material field.Meanwhile, in the embodiment of the present invention, the utilization of mud is up to more than 80%, the profit of flyash and page rock
Consumption highest is also up to 25%, so that a kind of new thinking is provided to the recycling of mud and flyash, while being also
The raw material of fired brick provide a kind of new sources.
In summary, the invention provides a kind of preparation method of silt sintering brick, mud is carried out removal of impurities, once mistake by it
The steps such as sieve, drying, ball milling, secondary sieving, obtain mud powder.It is again that mud powder is compressing under high pressure, sintering.It passes through
Mud is handled, silt sintering brick is finally made, is effectively utilized the mud of dredging river, reduces to environment and river
Pollution.
Present invention also offers a kind of silt sintering brick, the silt sintering brick is effectively utilized the mud of dredging river, subtracted
The pollution to environment and river is lacked.Meanwhile, the silt sintering brick intensity reaches construction material standard, with good practical valency
Value.
The preferred embodiments of the present invention are these are only, are not intended to limit the invention, for those skilled in the art
For member, the present invention can have various modifications and variations.Any modification within the spirit and principles of the invention, being made,
Equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
1. a kind of preparation method of silt sintering brick, it is characterised in that including：
Mud is cleaned with water, and removes suspended impurity, is filtered, dries 2~3 days, is once sieved after smashing to pieces at room temperature,
Obtain primary raw materials；
The primary raw materials carries out secondary sieving after drying, ball milling, obtains mud powder；
The mud powder is compressing under high pressure, and the silt sintering brick is made in sintering.
2. the preparation method of silt sintering brick according to claim 1, it is characterised in that the sieve aperture mesh once sieved
Number is 2~10 mesh.
3. the preparation method of silt sintering brick according to claim 1, it is characterised in that the sieve aperture mesh of the secondary sieving
Number is 100~150 mesh.
4. the preparation method of silt sintering brick according to claim 1, it is characterised in that done to the primary raw materials
Dry condition is dry 24~36h at 80~90 DEG C.
5. the preparation method of silt sintering brick according to claim 1, it is characterised in that the mud powder is compressing
Condition be：60~90s of pressurize under 15~20MPa pressure.
6. the preparation method of silt sintering brick according to claim 1, it is characterised in that the silt after suppressing high pressure
The condition that mud powder is sintered is：2~4h is sintered under 1100~1160 DEG C of sintering temperature.
7. the preparation method of silt sintering brick according to claim 6, it is characterised in that the silt after suppressing high pressure
When mud powder is sintered, the sintering temperature is to slowly warm up in the form of gradient increased temperature：, will first with 5 DEG C/min speed
Temperature rises to 100~200 DEG C and is incubated 30~60min；Heat up again 500~600 DEG C and 30~60min of insulation；800 are warming up to again
~900 DEG C and 60~90min of insulation, then heat to 1000~1100 DEG C and be incubated 60~90min, be finally warming up to the burning
Junction temperature.
8. the preparation method of the silt sintering brick according to any one of claim 1~7, it is characterised in that also include：By institute
State mud powder to be mixed with auxiliary material, mixed-powder is made；The mixed-powder is entered into horizontal high voltage compacting, sintering, system again
Obtain the silt sintering brick；Wherein, the auxiliary material includes at least one of flyash and page rock.
9. the preparation method of silt sintering brick according to claim 8, it is characterised in that according to the mass fraction, described to become silted up
Mud powder and the mass ratio of the auxiliary material are：4~9:1.
10. a kind of silt sintering brick, it is characterised in that as the preparation side of the silt sintering brick described in any one of claim 1~9
Method is prepared.
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