CN106278145A - The process technique of a kind of mud, shale brick and preparation method thereof - Google Patents
The process technique of a kind of mud, shale brick and preparation method thereof Download PDFInfo
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- CN106278145A CN106278145A CN201610601137.1A CN201610601137A CN106278145A CN 106278145 A CN106278145 A CN 106278145A CN 201610601137 A CN201610601137 A CN 201610601137A CN 106278145 A CN106278145 A CN 106278145A
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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
- C04B33/135—Combustion residues, e.g. fly ash, incineration waste
- C04B33/1352—Fuel ashes, e.g. fly ash
-
- 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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
- C04B35/634—Polymers
- C04B35/63404—Polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B35/63444—Nitrogen-containing polymers, e.g. polyacrylamides, polyacrylonitriles, polyvinylpyrrolidone [PVP], polyethylenimine [PEI]
-
- 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
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3208—Calcium oxide or oxide-forming salts thereof, e.g. lime
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Treatment Of Sludge (AREA)
Abstract
The present invention provides the process technique of a kind of mud, comprises the following steps: A) mud, calcium oxide, flyash and polyacrylamide are mixed, obtain mud mixture；B) described mud mixture is dehydrated, the mud after being processed.The present invention is with calcium oxide as flocculation aid, flyash is filter aid, add the polyacrylamide promoting mud accumulation again so that disclosure satisfy that brickmaking standard with the shale brick of the dirty mud as a raw material after processing, there is relatively low unit weight and preferable sound insulation, heat insulation effect simultaneously.Test result indicate that, be 1400～1500kg/m with the unit weight of shale brick that the dirty mud as a raw material after processing in the present invention prepares3, heat conductivity is 0.75～0.85W/m K.Present invention also offers the preparation method of a kind of shale brick and shale brick.
Description
Technical field
The invention belongs to technical field of sludge treatment, particularly relate to process technique, shale brick and the preparation thereof of a kind of mud
Method.
Background technology
Along with " 12 " China Urbanization Progress process quickening and waste water control dynamics is constantly strengthened, " 13 " are raw
The enforcement successively of state China planning outline, China has become sewage disposal big country.According to firmly building portion's " Urban Construction in China statistics year
Mirror " statistics, ended for the end of the year 2014, sewage treatment capacity was 130,870,000 ton per days, compared with amount of increase nearly 5.1% in 2013.Sewage disposal
Amount increases year after year, and mud is as the by-product of sewage disposal, and its generation amount is consequently increased.Moisture percentage in sewage sludge 70～80%, has
Machine matter 400～600g/kg, full nitrogen 15～30g/kg, full phosphorus 2～10g/kg, full potassium 20～80g/kg..2014 China in end of the year cities
City's sewage load reaches 38,272,390,000 tons, and city wet mud generation amount is 21,430,000 tons (conservative estimation is produced by 10,000 tons of sewage
Raw 5.6 tons of wet mud calculate).
Before this, owing to the idea of China's " light mud of heavy water " for a long time does not obtain relatively big change, and sludge treatment sets
Execute that construction speed is relatively slow and the reason such as disposal means backwardness, cause the mud (moisture content that major part sewage treatment plant of China produces
About about 80%) all do not obtain effective recycling, be substantially the simple landfill with about 63%, the soil of about 13.5%
Utilize, the air storage of about 1.8% and about 14.4% the several ways such as outward transport be disposed, and simply fill, outdoor heap
The wet mud put and transport outward substantially belongs to arbitrarily disposal, causes the significant wastage of resource.
Therefore, the disposal of resources of mud utilizes technology to become a difficult problem and the bottle of restriction sewage disposal Healthy
Neck.
Summary of the invention
It is an object of the invention to provide the process technique of a kind of mud, shale brick and preparation method thereof, pass through the present invention
In sludge treatment technique to mud, firing building material brick after sludge drying can have been carried out resource and has effectively utilized.
The present invention provides the process technique of a kind of mud, comprises the following steps:
A) mud, calcium oxide, flyash and polyacrylamide are mixed, obtain mud mixture；Described mud mass dryness fraction is
2.0～3.5%, burning the component content of mud ash after losing is: carbon 5～6%, hydrogen 0.5～1.0%, nitrogen 0.05～0.2%, sulfur
0.4～0.6%, oxygen 10～15%, chlorine 0.1～0.5%, potassium 0.01～0.05%, sodium 0.05～0.2%.；
B) described mud mixture is dehydrated, the mud after being processed.
Preferably, the consumption of described calcium oxide is 10～350kg/ ton over dry mud.
Preferably, the particle diameter of described calcium oxide is 30～100 mesh.
Preferably, the consumption of described flyash is 10～350kg/ ton over dry mud.
Preferably, the particle diameter of described flyash is 200～400 mesh.
Preferably, the consumption of polyacrylamide is 0.1～1.0kg/ ton over dry mud；
The number-average molecular weight of described polyacrylamide is 1000～12,000,000.
Preferably, the time of described dehydration is 120～150min；
The pressure of described dehydration is 0.6～2.0MPa.
Preferably, the mass dryness fraction of the mud after described process is 40～50%.
The present invention provides a kind of shale brick, is made up of the material including following parts by weight component:
Mud after the process that process technique mentioned above obtains: 1～10 part；
White bind: 60～90 parts；
Gangue: 10～40 parts；
Water: 10～20 parts.
The present invention provides the preparation method of a kind of shale brick, comprises the following steps:
Carry out brick-making raw material successively mixing, extrude and firing, obtain shale brick；
Described brick-making raw material includes the component of following parts by weight:
Mud after the process that process technique mentioned above obtains: 1～10 part；
White bind: 60～90 parts；
Gangue: 10～40 parts；
Water: 10～20 parts.
The present invention provides the process technique of a kind of mud, comprises the following steps: A) by mud, calcium oxide, flyash and poly-
Acrylamide mixes, and obtains mud mixture；Described mud mass dryness fraction is 2.0～3.5%, burns the component content of mud ash after losing
For: carbon 5～6%, hydrogen 0.5～1.0%, nitrogen 0.05～0.2%, sulfur 0.4～0.6%, oxygen 10～15%, chlorine 0.1～0.5%,
Potassium 0.01～0.05%, sodium 0.05～0.2%；B) described mud mixture is dehydrated, the mud after being processed.This
Bright with calcium oxide as flocculation aid, flyash is filter aid, then adds the polyacrylamide promoting mud accumulation, promotes mud
Flocculation, is dehydrated mixing sludge, obtains dewatered sludge, simultaneously as having in calcium oxide, flyash and mud
Machine thing components matching, it is possible to well balance fires every element of shale brick so that with the page of the dirty mud as a raw material after processing
Rock brick disclosure satisfy that brickmaking standard, has relatively low unit weight and preferable sound insulation, heat insulation effect simultaneously.Test result indicate that, with
The unit weight of shale brick that dirty mud as a raw material after the process that in the present invention, the process technique of mud obtains prepares be 1400～
1500kg/m3, heat conductivity is 0.75～0.85W/m K.
Detailed description of the invention
The present invention provides the process technique of a kind of mud, comprises the following steps:
A) mud, calcium oxide, flyash and polyacrylamide are mixed, obtain mud mixture；Described mud mass dryness fraction is
2.0～3.5%, burning the component content of mud ash after losing is: carbon 5～6%, hydrogen 0.5～1.0%, nitrogen 0.05～0.2%, sulfur
0.4～0.6%, oxygen 10～15%, chlorine 0.1～0.5%, potassium 0.01～0.05%, sodium 0.05～0.2%；
B) described mud mixture is dehydrated, the mud after being processed.
In the present invention, described mud preferably mass dryness fraction is the sludge condensation mud of 2.0～3.5%, doing of described mud
Degree is the solid content of mud, after i.e. measuring moisture percentage in sewage sludge, deduct the moisture content of mud with integer 1, and obtain is mud
Mass dryness fraction；Mud remaining after all being removed by the moisture contained in mud is referred to as over dry mud.In the present invention, described mud burns and loses
The component content of rear ash is: carbon 5～6%, hydrogen 0.5～1.0%, nitrogen 0.05～0.2%, sulfur 0.4～0.6%, oxygen 10～
15%, chlorine 0.1～0.5%, potassium 0.01～0.05%, sodium 0.05～0.2%；In the present invention, described burn lose as 105～
The raw material calcination at 1000～1100 DEG C dried at 110 DEG C.The present invention does not has special restriction to the source of described mud, can
To be flotation tank slash mud machine skimmed air supporting mud, to can also is that second pond mud scraper to be scraped or inclined-plate clarifying basin sedimentation mud, it is also possible to
Being that the mixing that above aggregate manner is collected concentrates mud, concrete, in an embodiment of the present invention, described mud can use bleaching sulfur
Hydrochlorate hardwood pulp pulp-making waste-water three grades of air supporting mud of oxidation.In the present invention, with mud for raw material production fired brick, in mud
Organic substance burns in adobe body, after burning, forms many micropores, reduce the unit weight of fired brick, improve in fired brick
The sound insulation of fired brick, heat insulation effect；Mud typically contains abundant ferrum oxide simultaneously, can make up or strengthen the ferrum in shale brick
Element, act as toner and the effect of vitreous agent.
In the present invention, described calcium oxide is flocculation aid, present invention preferably employs the quick lime being mainly composed of calcium oxide
Adding as flocculation aid, dust-proof in order to ensure the environmental protection of work progress, the present invention preferably adds calculogenesis mortar in mud, described
The mass concentration of calculogenesis mortar is preferably 5～10%, more preferably 6～9%, most preferably 7～8%.Adding of described calcium oxide
Dosage is preferably 10～350kg/ ton over dry mud, more preferably 100～350kg/ ton over dry mud, most preferably 150～
350kg/ ton over dry mud, concrete, in an embodiment of the present invention, can be that 150kg/ ton over dry mud, 250kg/ ton are exhausted
Dewatered sludge, 350kg/ ton over dry mud；The particle diameter of described calcium oxide is preferably 30～100 mesh, more preferably 80～100 mesh.
In the present invention, described flyash is filter aid, and preferably CFBB dry discharge fly ash, ciculation fluidized
Bed boiler dry discharge fly ash has the biggest difference with common coal-fired boiler in power plant flyash, the powder that CFBB produces
Coal ash particle loosens, and water requirement is big, and calcium sulfur content is higher, and, dry ash discharge is not mixed into oarse-grained bottom slag, relative to quality
Poor coal-fired boiler in power plant wet ash discharge quality and fineness are all fine, concrete, the recirculating fluidized bed pot employed in the present invention
The composition of stove dry discharge fly ash includes: the SiO of 50～52wt%2, the Al of 15～16wt%2O3, the Fe of 9～10wt%2O3, 14～
The CaO of 15wt%, the MgO of 1～2wt%, the Na of 0.3～0.4wt%2O, the K of 1～2wt%2O, the SO of 2～3wt%3, surplus
Impurity；Preferably include: the SiO of 51.08wt%2, the Al of 15.85wt%2O3, the Fe of 9.68wt%2O3, the CaO of 14.68wt%,
The Na of the MgO of 1.54wt%, 0.38wt%2The K of O, 1.45wt%2The SO of O, 2.39wt%3, surplus impurity.Mud is used to do page
Rock brick adjuvant fired brick, generally relatively low because of its aluminium mineral material content, cause product strength low and firing range is narrow, and need
High aluminum mineral such as flyash can be properly added during deeply dehydrating sludge, both as filter aid for dehydration, add as high alumina again
Agent.
Dust-proof in order to ensure the environmental protection of work progress, the present invention preferably adds coal ash pulp, described flyash in mud
The mass concentration of slurry is preferably 5～10%, more preferably 6～9%, most preferably 7～8%；The addition of described flyash is excellent
Elect 10～350kg/ ton over dry mud, more preferably 100～350kg/ ton over dry mud, most preferably 150～350kg/ ton as
Over dry mud, concrete, in an embodiment of the present invention, can be 150kg/ ton over dry mud, 250kg/ ton over dry mud,
350kg/ ton over dry mud；The particle diameter of described flyash is preferably 200～400 mesh, more preferably 300～325 mesh.
In the present invention, described polyacrylamide (PAM) can promote the gathering of mud electric charge, promotes the flocculation of mud,
Be conducive to dehydration.Described polyacrylamide can be PAMA, it is also possible to be PAMC, described
The number-average molecular weight of polyacrylamide is preferably 1000～12,000,000, more preferably 1050～11,500,000.The present invention is the most prior
Prepare mass concentration be 0.1～0.2% polyacrylamide mud be added, the consumption of described polyacrylamide be preferably
0.1～1.0kg/ ton over dry mud, more preferably 0.2～0.8kg/ ton over dry mud, most preferably 0.3～0.4kg/ ton over dry
Mud, concrete, in an embodiment of the present invention, can be 0.1kg/ ton over dry mud, 0.4kg/ ton over dry mud, 1.0kg/
Ton over dry mud.
In the present invention, described calculogenesis mortar, coal ash pulp and the preparation water used by polypropylene mud are preferably waited to take off
The sludge slurry stock solution of water.
Above-mentioned raw materials is preferably mixed by the present invention, obtains mud mixture, and the present invention is preferably existing by calcium oxide and flyash
Mix with mud, stir 30～40min, then add polyacrylamide and continue stirring 2～5min, occur substantially to mixture
Flocculation or floc sedimentation, obtain mud mixture.
The mud mixture obtained is dehydrated by the present invention, the mud after being processed.Present invention preferably employs mud
Deep dehydration machine is dehydrated, and more preferably uses van-type high-pressure polypropylene filter press to carry out the dehydration of mud, described van-type
The filter cloth material of high-pressure polypropylene filter press is preferably chinlon；Present invention preferably employs feeding pump to gather to described van-type high pressure
Propylene filter press feeding, described feeding pump is preferably screw pump or high-pressure plunger pump.Described feeding pump temperature outlet lift
It is preferably 100～200m.The present invention does not has special restriction to the model of described feeding pump and dewaterer.
In the present invention, the time of described dehydration is preferably 120～150min, more preferably 130～140min；Described de-
The pressure of water is preferably 0.6～2.0MPa, more preferably 0.8～1.8Mpa；The process of described dehydration is divided into dehydration technology process
With high pressure dehydration, the time of described dehydration technology is preferably 75～110min, more preferably 80～100min, most preferably
90～95min；The pressure of described dehydration technology is preferably 0.6～1.0MPa, more preferably 0.7～0.9MPa, most preferably
0.75～0.8MPa；The time of described high press-dehydrating is preferably 20～40min, more preferably 25～35min, most preferably
30min；The pressure of described high press-dehydrating is preferably 1.2～2.0MPa, more preferably 1.3～1.8MPa, most preferably 1.5～
1.6MPa。
After completing dehydration, through suitably naturally drying or hot air drying, the mud after being processed, the dirt after the process obtained
The mass dryness fraction of mud is preferably 40～50%, more preferably 43～48%；Concrete, in an embodiment of the present invention, mud handling capacity
With 600m2As a example by van-type high-pressure polypropylene pressure filter, each cycle of operation unload 40%～50% mass dryness fraction mud cake material 6000～
8000kg, be equivalent to stock solution mud 60～80m3, described cake thickness is 20～30mm (corresponding mud stock solution mass dryness fractions 3.0%-
3.5%).
In mud after process, the content of each composition is: organic 5～15%, organic carbon 5～10%, nitrogen (in terms of N) 0.1
～0.5%, full phosphorus is (with P2O5Meter) 1～3%, potassium 0.2～1.0g/kg, calcium 150～300g/kg, ferrum 100～200g/kg, magnesium 1
～3g/kg.
The present invention also provides for a kind of shale brick, is made up of the material including following parts by weight, in terms of over dry material；
Mud after the process that process technique mentioned above obtains: 1～10 part；
White bind: 60～90 parts；
Gangue: 10～40 parts；
Water: 10～20 parts.
In the present invention, the parts by weight (over dry) of the mud after described process are preferably 1～10 part, more preferably 3～9
Part, most preferably 5～6 parts；The mud after described process mass percent in the over dry dispensing of whole shale brick preferably≤
10%, more preferably≤6%, to ensure that the shale brick that with the addition of mud has enough intensity and hardness.Dirt after described process
Mud after tunnel cave high temperature sintering its ash participate in dutch brick reaction, its ashing after ash in rich in ferrum oxide, oxygen
Change the materials such as aluminum and can strengthen color and luster and the intensity of shale brick.
In the present invention, the parts by weight (over dry) of described white bind are preferably 60～90 parts, more preferably 70～80 parts；
In described white bind, the mass fraction of calcium oxide is preferably≤10%, and more preferably≤8%.The source of described white bind is not had by the present invention
There is special restriction, use this area to prepare the white bind that shale brick is conventional.
In the present invention, in the high temperature ash of described mud, the content of calcium oxide is preferably≤20%, described mud ash with
And the sulphuric anhydride (SO in white bind3) etc. containing sulphuric anhydride (SO3) total content≤1% of sulfate mineral.
In the present invention, the parts by weight (over dry) of described gangue are preferably 10～40 parts, more preferably 20～30 parts；
In the present invention, described gangue produces and the sintering height of holding 900 DEG C～1000 DEG C in tunnel cave high temperature section as internal combustion
Temperature, its residual ash participates in high temperature sintering reaction, sinters, curing reaction is for sinter into normally together with shale, mud ash
Pinkish red yellow shale brick.
In the present invention, the parts by weight of described water are preferably 10～20 parts, more preferably 12～17 parts.
Present invention also offers the preparation method of a kind of shale brick, comprise the following steps；
Carry out brick-making raw material successively mixing, extrude and firing, obtain shale brick；
Described brick-making raw material includes the component of following parts by weight:
Mud after the process that sludge treatment technique mentioned above obtains: 1～10 part；
White bind: 60～90 parts；
Gangue: 10～40 parts；
Water: 10～20 parts.
In the present invention, mud, white bind, gangue and the water after described process consumption and source and above process
After mud, white bind, gangue and water consumption with source consistent, do not repeat them here.
Above-mentioned raw materials is carried out mixing, extrude and firing by the present invention successively, obtains shale brick, and the present invention is preferably by above-mentioned heavy
It is stirred successively after the raw material mixing of amount number and rolling processes, the most further stirred after rolling process (or add
Steam) and bleed, obtain the brick-making raw material of mixing；True in the present invention, described stirring, rolling process and bleed and be this area
The brick-making technology that technical staff commonly uses, this is not done special restriction by the present invention.
After obtaining the brick-making raw material of mixing, described brick-making raw material is extruded by the present invention, obtains adobe, and described adobe can be
Solid, it is also possible to it is hollow.In the present invention, the pressure of described extrusion is 3～4MPa, preferably 3.2～3.8MPa；Institute
The vacuum stating extrusion is preferably-0.08～-0.1MPa, be preferably-0.085～-0.095MPa, more preferably-0.092～-
0.093MPa.Present invention preferably employs extruder to carry out brick-making raw material extruding base, more preferably use vacuum stiff brick extruding machine,
The present invention does not has special restriction to the concrete model of described vacuum stiff brick extruding machine, it is possible to reach above-mentioned extrusion pressure and extrusion
Vacuum.
After obtaining adobe, the present invention preferably first carries out natural drying 4～6h to adobe, then enters tunnel cave and is dried, and is dried
After be fired again, in the present invention, described dry temperature is preferably 300～600 DEG C；The described dry time is preferably 14
～17h；The described temperature fired is preferably 900～1000 DEG C, more preferably 920～980 DEG C, most preferably 950～960 DEG C；
The described time fired is preferably 0.5～1h.
After testing, the shale brick in the present invention meets standard GB/T 13544-2000 " sintered perforated brick ", GB5101-
The standard-required of 2003 " fired common bricks ".
The leaching step specified according to " solid waste Leaching leaching method horizontal vibration method (HJ557 2010) ",
Shale brick in the present invention is under the conditions of neutral, acidity and alkaline leaching, and the leaching concentration of Cr, Cu, Zn, As and Pb is all far below
Group III water body standard in China " Environmental Quality Standard of Surface Water (GB3838-88) ", illustrates the weight in making brick from sludge solidification sludge
Metal effect is good, safe and feasible.
In order to further illustrate the present invention, the process technique of a kind of mud present invention provided below in conjunction with embodiment,
Shale brick and preparation method thereof is described in detail, but can not be understood as limiting the scope of the present invention.
In the examples below, mud uses bleached sulphate three grades of air supportings of wealthy commercial wood pulp pulp-making waste-water deep oxidation
Mud.This air supporting mud mass dryness fraction is 3.0%, burns the component content of mud ash after losing and is: carbon 5.43%, hydrogen 0.78%, nitrogen 0.06%,
Sulfur 0.48%, oxygen 12.0%, chlorine 0.2%, potassium 0.02%, sodium 0.11%.
White bind, gangue source do not have special restriction in the examples below, use this area to prepare shale brick normal
White bind, gangue.
Embodiment 1
Taking the sludge condensation mud that 400L mass dryness fraction is 3.0%, above-mentioned mud pumps into 600L and sizes mixing reaction container, in order to ensure to execute
The environmental protection of work process is dust-proof, takes the air supporting mud stock solution quick lime by 4.2kg and the fine coal ash of 1.8kg from reaction container of sizing mixing in advance
Do not prepare 10% calculogenesis mortar and coal ash pulp, continuous stirring 30min.
Described quicklime particles is 80 mesh；Fly ash grain is 300 mesh.
In reaction container of sizing mixing, add the PAM that 1.2L mass concentration is 0.1% prepared in advance, be further continued for stirring 2～
(degree of polymerization 1000～12,000,000 molecular weight containing PAMA 5g, this PAM, tests front 1～2h and prepares 5min.
1.2L aqueous solution), during to mud appearance substantially flocculation or floc sedimentation, take off toward the degree of depth from agitator bottom pyramidal sludge out pipe screw pump
Hydraulic pressure filter feeding.
Described feeding pump outlet lift is 200m, flow 5m3/ h, pump type selecting is screw pump.
Described deep sludge dehydrator is van-type high-pressure polypropylene filter press, treating capacity 8m2, 8 blocks of plates, 400L mud
Starching with 4 blocks of plates, remaining 4 blocks of plate unloads standby, sheet frame 800*800mm；Filter cloth material is nylon monofilament.
The described combined feed time is 110min., described low-pressure feeding pressure 0.8MPa, low-pressure feeding time
85min., described high pressure feeding pressure 1.5MPa, high pressure feeding time 25min.Each cycle of operation unloads the mud of 40% mass dryness fraction
Biscuit 45kg, be equivalent to stock solution mud 0.4m3；Described cake thickness is 15～20mm (corresponding mud stock solution mass dryness fractions 3.0%).
The dewatered sludge block cake obtained, to depositing dry in the sun booth after discharging, it dries mass dryness fraction naturally is 41.2%；Mud takes off
Filter liquor is limpid, filtrate SS (ppm) 60.
Dewatered sludge obtained above (over dry meter) 5 parts, white bind (over dry meter) 70 parts, gangue 20 parts (over dry meter) and
15 parts of water is stirred successively, rolling processes, stirs and bleed, and obtains brick-making raw material, then uses vacuum hard brick-making raw material
Mould extruder vacuum extruding form, obtain adobe.
Described brick machine matched power (250+90) KW, extrusion pressure 4.0MPa, vacuum-0.092MPa, extrude wet base
Intensity reaches 0.35-0.40MPa.
The adobe of molding is dried through tunnel cave, is then transcoded onto on kiln car and sends to tunnel cave roasting, obtain shale brick.Roasting
Burn temperature 900 DEG C, roasting time 0.5h.
Embodiment 2
Taking the sludge condensation mud that 500L mass dryness fraction is 3.0%, above-mentioned mud pumps into 600L and sizes mixing reaction container, in order to ensure to execute
The environmental protection of work process is dust-proof, takes the air supporting mud stock solution quick lime by 3.75kg and the flyash of 3.75kg from reaction container of sizing mixing in advance
Prepare 10% calculogenesis mortar and coal ash pulp, continuous stirring 30min respectively.
Described quicklime particles is 80 mesh；Fly ash grain is 300 mesh.
In reaction container of sizing mixing, add the PAM that 4.8L mass concentration is 0.1% prepared in advance, be further continued for stirring
(degree of polymerization 1000～12,000,000 molecular weight containing PAMA 6g, this PAM, before test, 2h prepares 4.8L water to 5min.
Solution), during to mud appearance substantially flocculation or floc sedimentation, from agitator bottom pyramidal sludge out pipe screw pump toward deep dehydration filter pressing
Machine feeding.
Described feeding pump outlet lift is 200m, flow 5m3/ h, pump type selecting is screw pump.
Described deep sludge dehydrator is van-type high-pressure polypropylene filter press, treating capacity 8m2, 8 blocks of plates, 500L mud
Starching with 4 blocks of plates, remaining 4 blocks of plate unloads standby, sheet frame 800*800mm；Filter cloth material is nylon monofilament.
The described combined feed time is 120min., described low-pressure feeding pressure 0.8MPa, low-pressure feeding time
90min., described high pressure feeding pressure 1.5MPa, high pressure feeding time 30min.Each cycle of operation unloads the mud of 40% mass dryness fraction
Biscuit 56.25kg, be equivalent to stock solution mud 0.5m3；Described cake thickness is 15-22mm (corresponding mud stock solution mass dryness fraction
3.0%).
The dewatered sludge block cake obtained, to depositing dry in the sun booth after discharging, it dries naturally, and mass dryness fraction is 49.2%；Mud
Dehydration filtrate is limpid, filtrate SS (ppm) 50.The dewatered sludge obtained is ground into the granule of 80 mesh.
Dewatered sludge obtained above (over dry meter) 6 parts, white bind (over dry meter) 70 parts, gangue 20 parts (over dry meter) and
15 parts of water is stirred successively, rolling processes, stirs and bleed, and obtains brick-making raw material, then uses vacuum hard brick-making raw material
Mould extruder vacuum extruding form, obtain adobe.
Described brick machine matched power (250+90) KW, extrusion pressure 4.0MPa, vacuum-0.092MPa.
The adobe of molding is dried through tunnel cave, is then transcoded onto on kiln car and sends to tunnel cave roasting, obtain shale brick.Roasting
Burn temperature 1000 DEG C, roasting time 1h.
Embodiment 3
Taking the sludge condensation mud that 400L mass dryness fraction is 3.0%, above-mentioned mud pumps into 600L and sizes mixing reaction container, in order to ensure to execute
The environmental protection of work process is dust-proof, takes the air supporting mud stock solution quick lime by 2.1kg and the fine coal ash of 4.9kg from reaction container of sizing mixing in advance
Do not prepare 10% calculogenesis mortar and coal ash pulp, continuous stirring 30min.
Described quicklime particles is 80 mesh；Fly ash grain is 300 mesh.
In reaction container of sizing mixing, add the PAM that 12L mass concentration is 0.1% prepared in advance, be further continued for stirring 5min.
(degree of polymerization 1000～12,000,000 molecular weight containing PAMA 6g, this PAM, before test, 2h prepares 12L aqueous solution),
During to mud appearance substantially flocculation or floc sedimentation, feed toward deep dehydration pressure filter from agitator bottom pyramidal sludge out pipe screw pump
Material.
Described feeding pump outlet lift is 200m, flow 5m3/ h, pump type selecting is screw pump.
Described deep sludge dehydrator is van-type high-pressure polypropylene filter press, treating capacity 8m2, 8 blocks of plates, 400L mud
Starching with 4 blocks of plates, remaining 4 blocks of plate unloads standby, sheet frame 800*800mm；Filter cloth material is nylon monofilament.
The described combined feed time is 120min., described low-pressure feeding pressure 0.8MPa, low-pressure feeding time
90min., described high pressure feeding pressure 1.5MPa, high pressure feeding time 30min.Each cycle of operation unloads the mud of 40% mass dryness fraction
Biscuit 52.5kg, be equivalent to stock solution mud 0.5m3；Described cake thickness is 15～22mm (corresponding mud stock solution mass dryness fractions
3.5%).
The dewatered sludge block cake obtained, to depositing dry in the sun booth after discharging, it dries mass dryness fraction naturally is 48.4%；Mud takes off
Filter liquor is limpid, filtrate SS (ppm) 50.The dewatered sludge obtained is ground into the granule of 80 mesh.
Dewatered sludge obtained above (over dry meter) 5 parts, white bind (over dry meter) 80 parts, gangue 30 parts (over dry meter) and
17 parts of water is stirred successively, rolling processes, stirs and bleed, and obtains brick-making raw material, then uses vacuum hard brick-making raw material
Mould extruder vacuum extruding form, obtain adobe.
Described brick machine matched power (250+90) KW, extrusion pressure 4.0MPa, vacuum-0.092MPa.
The adobe of molding is dried through tunnel cave, is then transcoded onto on kiln car and sends to tunnel cave roasting, obtain shale brick.Roasting
Burn temperature 1000 DEG C, roasting time 0.8h.
The shale brick that embodiment 1～3 obtains is carried out performance test, and result is as shown in table 1.
The performance data of the shale brick that table 1 embodiment of the present invention 1～3 obtains
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For Yuan, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (10)
1. a process technique for mud, comprises the following steps:
A) mud, calcium oxide, flyash and polyacrylamide are mixed, obtain mud mixture；Described mud mass dryness fraction be 2.0～
3.5%, burning the component content of mud ash after losing is: carbon 5～6%, hydrogen 0.5～1.0%, nitrogen 0.05～0.2%, sulfur 0.4～
0.6%, oxygen 10～15%, chlorine 0.1～0.5%, potassium 0.01～0.05%, sodium 0.05～0.2%；
B) described mud mixture is dehydrated, the mud after being processed.
Process technique the most according to claim 1, it is characterised in that the consumption of described calcium oxide is that 10～350kg/ tons are exhausted
Dewatered sludge.
Process technique the most according to claim 1, it is characterised in that the particle diameter of described calcium oxide is 80～100 mesh.
Process technique the most according to claim 1, it is characterised in that the consumption of described flyash is that 10～350kg/ tons are exhausted
Dewatered sludge.
Process technique the most according to claim 1, it is characterised in that the particle diameter of described flyash is 200～400 mesh.
Process technique the most according to claim 1, it is characterised in that the consumption of polyacrylamide is 0.1～1.0kg/ ton
Over dry mud；
The number-average molecular weight of described polyacrylamide is 1000～12,000,000.
Process technique the most according to claim 1, it is characterised in that the time of described dehydration is 120～150min；
The pressure of described dehydration is 0.6～2.0MPa.
Process technique the most according to claim 1, it is characterised in that the mass dryness fraction of the mud after described process be 40～
50%.
9. a shale brick, is made up of the material including following parts by weight component:
Mud after the process that process technique described in claim 1～8 any one obtains: 1～10 part；
White bind: 60～90 parts；
Gangue: 10～40 parts；
Water: 10～20 parts.
10. a preparation method for shale brick, comprises the following steps:
Carry out brick-making raw material successively mixing, extrude and firing, obtain shale brick；
Described brick-making raw material includes the component of following parts by weight:
Mud after the process that process technique described in claim 1～8 any one obtains: 1～10 part；
White bind: 60～90 parts；
Gangue: 10～40 parts；
Water: 10～20 parts.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110156210A (en) * | 2019-06-03 | 2019-08-23 | 中铁二局第四工程有限公司 | A kind of processing method of Urban Underground construction yellow mud water |
| CN114044640A (en) * | 2021-10-28 | 2022-02-15 | 嘉兴绿方舟环保技术有限公司 | Double-component sludge-based non-fired cementing material and preparation method and application thereof |
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| CN101244928A (en) * | 2008-03-17 | 2008-08-20 | 彭强 | Method for producing sewage sludge shale brick |
| CN101649665A (en) * | 2009-09-14 | 2010-02-17 | 湖州鑫翔建材有限公司 | Sintered porous brick and preparation method thereof |
| CN103359907A (en) * | 2013-07-04 | 2013-10-23 | 南京万德斯环保科技有限公司 | Novel environment friendly conditioner for deep dehydration of sludge |
| CN103755309A (en) * | 2013-12-31 | 2014-04-30 | 广西科技大学 | Municipal sludge sintered shale perforated brick and production method thereof |
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| CN101244928A (en) * | 2008-03-17 | 2008-08-20 | 彭强 | Method for producing sewage sludge shale brick |
| CN101649665A (en) * | 2009-09-14 | 2010-02-17 | 湖州鑫翔建材有限公司 | Sintered porous brick and preparation method thereof |
| CN103359907A (en) * | 2013-07-04 | 2013-10-23 | 南京万德斯环保科技有限公司 | Novel environment friendly conditioner for deep dehydration of sludge |
| CN103755309A (en) * | 2013-12-31 | 2014-04-30 | 广西科技大学 | Municipal sludge sintered shale perforated brick and production method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110156210A (en) * | 2019-06-03 | 2019-08-23 | 中铁二局第四工程有限公司 | A kind of processing method of Urban Underground construction yellow mud water |
| CN114044640A (en) * | 2021-10-28 | 2022-02-15 | 嘉兴绿方舟环保技术有限公司 | Double-component sludge-based non-fired cementing material and preparation method and application thereof |
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Application publication date: 20170104 |