CN109987909A - In the method for bottom ash fine aggregate manufacture regenerated construction material - Google Patents
In the method for bottom ash fine aggregate manufacture regenerated construction material Download PDFInfo
- Publication number
- CN109987909A CN109987909A CN201910248952.8A CN201910248952A CN109987909A CN 109987909 A CN109987909 A CN 109987909A CN 201910248952 A CN201910248952 A CN 201910248952A CN 109987909 A CN109987909 A CN 109987909A
- Authority
- CN
- China
- Prior art keywords
- fine aggregate
- bottom ash
- construction material
- water
- weight percent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
-
- 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
- C04B28/02—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 hydraulic cements other than calcium sulfates
- C04B28/10—Lime cements or magnesium oxide cements
- C04B28/12—Hydraulic lime
-
- 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
- C04B40/024—Steam hardening, e.g. in an autoclave
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
A method of with bottom ash fine aggregate preparation, regeneration building materials comprising the steps of: after incinerator bottom slag to be collected to and carried out wet type screening, magnetic separation, eddy current separation and silt particle separation, collect the fine aggregate that bottom ash partial size is less than 1mm.Fine aggregate is mixed with glass fibre and calcium/silicon additive carry out it is quenched, wherein the weight percent of fine aggregate is 10 to 40%, the weight percent of glass fibre is 2 to 15%, and calcium/silicon additive weight percent is 50 to 80%.Fine aggregate and water after will be quenched be mixed to form mixture, and by water-solid ratio control between 1.35 to 1.55.Mixture is press-formed out plate, and plate is subjected to autoclaving.The fine aggregate that the present invention makes full use of the meeting after script bottom ash treatment discarded, molds standard compliant regenerated construction material after quenched effect.
Description
Technical field
The invention relates to a kind of manufacturing methods of building materials, particularly relate to a kind of with bottom ash fine aggregate manufacture regenerated construction material
Method.
Background technique
Garbage disposal is the great environmental project that is faced after mankind's intense industrialization and urbanization.In numerous rubbish
In processing mode, being pocessed again after first being incinerated incineration firing with incinerator is wide adopted a kind of garbage disposal at present
Mode.Rubbish is handled with incinerator burning at least has following several benefits: (1) rubbish can incite somebody to action after process burning is incinerated
The volume of rubbish significantly reduces；(2) substance harmful to environment contained in rubbish can be removed by burning is incinerated；
(3) burning of incinerator is implemented in the environment of control, and discharge gas can reduce pair also by monitoring appropriate and processing
The harm of human body；And the recyclable recycling of bottom ash after (4) burning, to improve the economic benefit of garbage disposal.
After incinerating operation, the thing for remaining on incineration siege is bottom ash (Bottom Ash).The bottom taken at present
Slag treatment program is after first storing bottom ash, then carry out sieving sorting, magnetic separation, eddy current choosing, it is broken and etc. after to obtain
The product needed.After bottom ash is via above-mentioned processing step, the pellet of different-grain diameter can be used according to different demands, and partial size is less than
The pellet (commonly referred to as fine aggregate) of 1mm would generally be passed into disuse.However, above-mentioned fine aggregate is similarly the processing of dealer's Expenses Cost
Product after bottom ash, if not greatly utilizing, quite unfortunately.
Summary of the invention
Therefore, the purpose of the present invention, i.e., provide a kind of waste material made full use of after bottom ash treatment with bottom ash fine aggregate
The method for manufacturing regenerated construction material.
Then, the manufacturing method of regenerated construction material of the present invention comprising the steps of: incinerator bottom slag is collected and carries out wet type
After screening, magnetic separation, eddy current separation and silt particle separation, the fine aggregate that bottom ash partial size is less than 1mm is collected.By fine aggregate and glass
Fiber and calcium/silicon additive mixing carry out quenched, wherein the weight percent of fine aggregate is the weight of 10 to 40%, glass fibre
Percentage is 2 to 15%, and calcium/silicon additive weight percent is 50 to 80%.Fine aggregate after will be quenched is mixed to form with water
Mixture, and by water-solid ratio control between 1.35 to 1.55.Mixture is press-formed out plate with specified pressure, and by plate
Material carries out autoclaving.
The effect of of the invention, is: the fine aggregate that the meeting after making full use of script bottom ash treatment is discarded, by quenched effect
After mold standard compliant regenerated construction material.
Embodiment: the present invention with bottom ash fine aggregate manufacture regenerated construction material method embodiment comprise the steps of: by
After wet type screening, magnetic separation, eddy current separation, stirring washing and silt particle separation are collected and carried out to incinerator bottom slag, bottom ash grain is collected
Diameter is less than the fine aggregate of 1mm.
Wherein, what wet type was screened carries out being that a water supplying unit is set in a rotary screen, is rolled in rotary screen
Bottom ash is washed away with water jets under high pressure while screening.Through water jets under high pressure the mode of washing away can make organic matter in bottom ash and
Chloride ion is dissolved in water and is pulled away, while high pressure water note can also wash away the sieve pore of rotary screen, avoid sieve pore by bottom ash blocking and
Reduce screening efficiency.Since the structure of water supplying unit and rotary screen is not the emphasis of this case, repeat no more.
After wet type is screened, added in a manner of magnetic separation by filtering out ferrous metal in bottom ash and sending to ferrous metal accumulator tank
To recycle, then selected containing nonferrous metal in a manner of eddy current separation.Eddy current separation system will be non-using the change in magnetic field
Ferrous metal is separated with other compositions, and the flow path of eddy current must be closed curve, and flow direction and coil winding direction are flat
Row, change of flux vertical with alternating magnetic field direction and with alternating current and flowed in opposite direction, so its frequency and friendship
The frequency of galvanic electricity is identical.The object that excitation eddy current can be incuded must belong to the conductive conductor of energy.It can will include aluminium, copper using this principle
Equal metals are sorted out from bottom ash, and to improve recovery value and reduce secondary pollution, remaining bottom ash carries out next step.
Then bottom ash is stirred washing by roller washing equipment in a manner of rolling stirring.In the present embodiment
In, being stirred water used in washing with the weight ratio for being intended to the bottom ash washed is 2:1 to 5:1, and is stirred washing
Time is 2 to 5 minutes.It makes bottom ash rubbing against one another during stirring washing and is washed by rubbing with the hands, can not only promote washing efficiency,
Also the impurity being attached in bottom ash can be made to be removed during washing by rubbing with the hands, so that bottom ash appearance is closer to natural sand stone.Again
Person may again be such that organic matter and chloride ion in bottom ash are dissolved in water and are pulled away during stirring washing.Finally will
Bottom ash after stirring washing carries out silt particle separation, collects the fine aggregate that bottom ash partial size is less than 1mm.
Fine aggregate is mixed with glass fibre and calcium/silicon additive (Ca/Si) carry out it is quenched, wherein the weight of fine aggregate
Percentage is 10 to 40%, the weight percent of glass fibre is 2 to 15%, calcium/silicon additive weight percent be 50 to
80%.Fine aggregate and water after will be quenched be mixed to form mixture, and by water-solid ratio (W/S) control between 1.35 to 1.55.Its
In, calcium/silicon additive be selected from cement, lime, silica sand or these one of combination.
Table one is the characteristic of board product under different glass fiber additive amount.As seen from the experiment, with glass fibre
Additive amount improve, the bending strength of plate increase accordingly (according to " building slab class bend test method CNS3904 " standard method into
Row test).When glass fibre additive amount arrived weight percentage 8%, bending strength reaches as high as 10.1N/mm2.Work as glass fibers
When tieing up additive amount more than weight percent 8%, bending strength starts to reduce, it may thus be appreciated that glass fibre additive amount should be when being 8%
Optimal process conditions.
Again by three tables of table two from the point of view of, be 8% in glass fibre additive amount, calcium/silicon additive ratio is 0.83, and water
Gu the preferable parameters adjusting that can be obtained optimal bending strength when than being 1.45, therefore summarize the present invention is water-solid ratio
1.45, and calcium/silicon additive ratio is 0.83.Mixture is finally press-formed out plate with specified pressure, and plate is existed
12 atmospheric pressures (atm), carry out 16 hours autoclavings, can be obtained regenerated plates by 190 DEG C.
In conclusion the fine aggregate that the present invention makes full use of the meeting after script bottom ash treatment discarded, after quenched effect
Mold standard compliant regenerated construction material, if bottom ash treatment process collocation agitation washing program, make bottom ash rubbing against one another and
It is washed by rubbing with the hands, the impurity being attached in bottom ash can be made to be removed during washing by rubbing with the hands, and allow bottom ash appearance closer to naturally
Sandstone, further promotes the quality of regenerated plates, therefore can reach the purpose of the present invention really.
Only as described above, only embodiments of the present invention, when the range that cannot limit implementation of the invention with this, i.e.,
Generally the simple equivalent changes and modifications made according to scope of the present invention patent and patent specification content, all still belong to this hair
In the range that bright patent covers.
Detailed description of the invention
Fig. 1 is table one, and Fig. 2 is table two.
Claims (7)
1. a kind of method with bottom ash fine aggregate manufacture regenerated construction material comprising the steps of: collect and carry out incinerator bottom slag
After wet type screening, magnetic separation, eddy current separation and silt particle separation, the fine aggregate that bottom ash partial size is less than 1mm is collected；By fine aggregate with
Glass fibre and calcium/silicon additive mixing carry out quenched, wherein the weight percent of fine aggregate be 10 to 40%, glass fibre it
Weight percent is 2 to 15%, and calcium/silicon additive weight percent is 50 to 80%；Fine aggregate after will be quenched is mixed with water
Mixture is formed, and by water-solid ratio control between 1.35 to 1.55；Mixture is press-formed out plate with specified pressure；And
Plate is subjected to autoclaving.
2. in the method for bottom ash fine aggregate manufacture regenerated construction material as described in claims 1, wherein incinerator bottom slag eddy current point with
Also bottom ash is carried out between silt particle separation to roll stirring washing.
3. in the method for bottom ash fine aggregate manufacture regenerated construction material as described in claims 2, wherein be using rolling when being stirred washing
Dynamic formula washing equipment.
4. in the method for bottom ash fine aggregate manufacture regenerated construction material as described in claims 2, wherein be stirred water used in washing
The weight ratio for measuring and being intended to the bottom ash washed is 2:1 to 5:1.
5. in the method for bottom ash fine aggregate manufacture regenerated construction material as described in claims 2, wherein the time for being stirred washing is 2
To 5 minutes.
6. in the method for bottom ash fine aggregate manufacture regenerated construction material as described in claims 1, wherein carrying out for wet type screening is supplied one
Water unit is set in a rotary screen, washes away bottom ash while carrying out rolling screening in rotary screen with water jets under high pressure.
7. in the method for bottom ash fine aggregate manufacture regenerated construction material as described in claims 1, wherein calcium/silicon additive is selected from water
Mud, lime, silica sand or these one of combination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910248952.8A CN109987909A (en) | 2019-03-29 | 2019-03-29 | In the method for bottom ash fine aggregate manufacture regenerated construction material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910248952.8A CN109987909A (en) | 2019-03-29 | 2019-03-29 | In the method for bottom ash fine aggregate manufacture regenerated construction material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109987909A true CN109987909A (en) | 2019-07-09 |
Family
ID=67131721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910248952.8A Pending CN109987909A (en) | 2019-03-29 | 2019-03-29 | In the method for bottom ash fine aggregate manufacture regenerated construction material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109987909A (en) |
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2019
- 2019-03-29 CN CN201910248952.8A patent/CN109987909A/en active Pending
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190709 |