CN109627016A - A kind of Circulating Fluidized Bed Ash haydites of book structure and preparation method thereof - Google Patents

A kind of Circulating Fluidized Bed Ash haydites of book structure and preparation method thereof Download PDF

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CN109627016A
CN109627016A CN201910136369.8A CN201910136369A CN109627016A CN 109627016 A CN109627016 A CN 109627016A CN 201910136369 A CN201910136369 A CN 201910136369A CN 109627016 A CN109627016 A CN 109627016A
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fluidized bed
circulating fluidized
haydites
ash
book structure
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甘伟
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Guangzhou University
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Guangzhou University
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    • 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
    • C04B35/62204—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products using waste materials or refuse
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    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/02—Agglomerated materials, e.g. artificial aggregates
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    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
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    • 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
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
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    • 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
    • C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
    • C04B2235/54—Particle size related information
    • C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
    • C04B2235/5427—Particle size related information expressed by the size of the particles or aggregates thereof millimeter or submillimeter sized, i.e. larger than 0,1 mm
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    • 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
    • C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
    • C04B2235/54—Particle size related information
    • C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
    • C04B2235/5436—Particle size related information expressed by the size of the particles or aggregates thereof micrometer sized, i.e. from 1 to 100 micron
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  • Processing Of Solid Wastes (AREA)

Abstract

The invention discloses a kind of Circulating Fluidized Bed Ash haydites of book structure and preparation method thereof.This Circulating Fluidized Bed Ash haydites of book structure is made of the raw material of following mass percent: 40%~60% Circulating Fluidized Bed Ash, 15%~30% clinker, 15%~25% shale, 0%~15% foaming agent.Also disclose the preparation method of Circulating Fluidized Bed Ash haydites of book structure simultaneously, the preparation method including expansion type Circulating Fluidized Bed Ash haydites of book structure and slug type Circulating Fluidized Bed Ash haydites of book structure.Circulating Fluidized Bed Ash haydites of book structure of the present invention is a kind of artificial lightweight aggregate, including expansion type haydite and slug type haydite, haydite performance are higher.The preparation method of Circulating Fluidized Bed Ash haydites of book structure of the present invention has the advantages that waste residue utilization rate is high, raw material sources are extensive, and preparation process is relatively easy, short preparation period, energy saving.Obtained ceramic product can be used for the fields such as light aggregate concrete, building product, plantation, filtering, insulation.

Description

A kind of Circulating Fluidized Bed Ash haydites of book structure and preparation method thereof
Technical field
The present invention relates to a kind of haydite, in particular to a kind of Circulating Fluidized Bed Ash haydites of book structure and preparation method thereof.
Background technique
Haydite is a kind of artificial inorganic light-weight aggregate, is mainly used for heat preservation, heat-insulated, lightweight wall, light-weight aggregate in architectural engineering Concrete, structure lightweight concrete etc., it can also be used to the fields such as environmental protection filtering, agricultural planting and building decoration.Currently, Haydite is prepared, mainly using clay, shale, mine overburden, creek, domestic sludge and Industrial Solid Waste etc., expands material through being added The auxiliary additives such as material, ingredient are prepared.Currently employed various Industrial Solid Wastes are that base stock manufactures haydite, become exploitation heat Point.
It is good using fuel tolerance that Circulating Fluidized Bed Ash (CFB ash) is mainly derived from, and harmful ingredients in flue gas is low follows for discharge The power plant of ring fluidized bed calcining technology.Due to using 850 DEG C~950 DEG C low-temperature burning technologies, the physics of CFB ash, chemically Matter and traditional flyash difference are very big.Vitreum and glass microballoon are practically free of in CFB ash, and pozzolanic activity is poor, and contains There are the desulfurization products such as free calcium oxide, gypsum and calcium sulfite, water requirement is big, unfavorable to cement stabilizing.State tomb standard GB/T 1596 " for the flyash in cement and concrete " regulations are free of CFB ash, and specifying CFB ash may not apply to cement and concrete Admixture is a kind of off standard material.CFB ash is the equal outer flyash of power plant, is taken on a red color, this ash water requirement greatly, poor activity But also contain certain free calcium, cement plant can not use.A large amount of red ash can only be stored up, heap when most near plant area Millions of tons are deposited, cause seriously to pollute.
Summary of the invention
It is an object of the invention to using CFB ash, shale and clinker, provide a kind of Circulating Fluidized Bed Ash haydites of book structure and its Preparation method.Prepared by Circulating Fluidized Bed Ash haydites of book structure, provide a kind of artificial lightweight aggregate for building (comprising Superlight ceramsites and Sintering ceramsite), meanwhile, it realizes solid waste consumption, generates good social benefit.
The technical solution used in the present invention is:
A kind of Circulating Fluidized Bed Ash haydites of book structure, is made of the raw material of following mass percent: 40%~60% circulation Fluidized bed ash, 15%~30% clinker, 15%~25% shale, 0%~15% foaming agent.
Further, when the content of foaming agent is not 0, this Circulating Fluidized Bed Ash haydites of book structure is expansion type recycle stream Change bed grey shale haydite (or being expansion type haydite)；When the content of foaming agent is 0, this Circulating Fluidized Bed Ash haydites of book structure For slug type Circulating Fluidized Bed Ash haydites of book structure (or being slug type haydite).
Preferably, in this Circulating Fluidized Bed Ash haydites of book structure, Circulating Fluidized Bed Ash is recirculating fluidized bed calcining discharge Off standard flyash.
Preferably, in this Circulating Fluidized Bed Ash haydites of book structure, the calorific value of recirculating fluidized bed be 100kcal/kg~ 350kcal/kg。
Preferably, in this Circulating Fluidized Bed Ash haydites of book structure, the composition of Circulating Fluidized Bed Ash by mass percentage are as follows: 9%~12%Al2O3, 30%~35%SiO2, 13%~16%Fe2O3, 29%~31%CaO, 1%~2%MgO, 0.5%~ 1%K2O, 0.1%~0.3%Na2O, 4%~6%SO3, 0.2%~0.8%TiO2, 0.1%~0.5%MnO2, 0.1%~ 0.2%P2O5, 3%~5% loss on ignition.
Preferably, in this Circulating Fluidized Bed Ash haydites of book structure, the mineral that Circulating Fluidized Bed Ash contains include: that desulfurization generates Anhydrite, calcite, the alpha-quartz introduced by coal ash, mullite, bloodstone, do not contain vitreum.
Preferably, in this Circulating Fluidized Bed Ash haydites of book structure, the partial size of Circulating Fluidized Bed Ash is less than 1mm, no agglomeration.
Preferably, in this Circulating Fluidized Bed Ash haydites of book structure, the particle diameter distribution of Circulating Fluidized Bed Ash is as follows: < 3 μm of body Product content is 15%~17%, and 3 μm~30 μm of volume content is 55%~60%, and 30 μm~60 μm of volume content is 13% ~15%, 60 μm~86 μm of volume content is 5%~8%, and > 86 μm of volume content is 4%~7%.
Preferably, in this Circulating Fluidized Bed Ash haydites of book structure, clinker is the cinder of boiler discharge, i.e. boiler slag, source In industrial enterprise's such as boiler of power plant.
Preferably, in this Circulating Fluidized Bed Ash haydites of book structure, the calorific value of clinker is 500kcal/kg~700kcal/ kg。
Preferably, in this Circulating Fluidized Bed Ash haydites of book structure, the partial size of clinker is less than 1mm.
Preferably, in this Circulating Fluidized Bed Ash haydites of book structure, the composition of clinker by mass percentage are as follows: 30%~35% Al2O3, 40%~45%SiO2, 2%~5%Fe2O3, 4%~6%CaO, 0.3%~1%MgO, 0.3%~1%K2O, 1% ~2%Na2O, 0.5%~1%SO3, 1%~2%TiO2, 0.1%~0.5%P2O5, 10%~15% loss on ignition.
Preferably, in this Circulating Fluidized Bed Ash haydites of book structure, shale is arenaceous shale.
Preferably, in this Circulating Fluidized Bed Ash haydites of book structure, silica quality content >=60% of shale.
Preferably, in this Circulating Fluidized Bed Ash haydites of book structure, the partial size of shale is less than 0.5mm；Specifically shale is broken It is broken into the powder that partial size is less than 0.5mm.
Preferably, in this Circulating Fluidized Bed Ash haydites of book structure, foaming agent is iron cement (Fe2O3Iron cement) foaming agent；Further Preferably, Fe in iron cement foaming agent2O3Mass content > 60%.
The preparation method of this Circulating Fluidized Bed Ash haydites of book structure, be following methods any one:
Preparation method one
When the dosage of foaming agent is not 0, i.e. the preparation method of expansion type Circulating Fluidized Bed Ash haydites of book structure includes following Step:
1) Circulating Fluidized Bed Ash and clinker are mixed, obtains combination ash；
2) combination ash, shale, foaming agent and water are mixed, obtains mixing and stirring material A, Chen Fu；
3) material A will be mixed and stirred and obtain pellet A by being squeezed into item, pelletizing, pelletizing；
4) pellet A is dried with rotary kiln, is roasted, foaming processing；
5) cooling discharging obtains expansion type Circulating Fluidized Bed Ash haydites of book structure；
Preparation method two
When the dosage of foaming agent is 0, i.e. the preparation method of slug type Circulating Fluidized Bed Ash haydites of book structure includes following step It is rapid:
1) Circulating Fluidized Bed Ash and clinker are mixed, obtains combination ash；
2) combination ash, shale and water are mixed, obtains mixing and stirring material B, Chen Fu；
3) material B will be mixed and stirred and obtain pellet B by being squeezed into item, pelletizing, pelletizing；
4) pellet B is dried with rotary kiln, is roasted, sintering processes；
5) cooling discharging obtains slug type Circulating Fluidized Bed Ash haydites of book structure.
Preferably, in the step 1) of preparation method one and method two, the calorific value of combination ash control >=400Kcal/ respectively kg.Control calorific value >=400kcal/kg combination ash is able to satisfy firing and requires.It is described herein to be, due to Circulating Fluidized Bed Ash Property it is unstable, cannot directly use.Clinker can adjust the calorific value in combination ash to meet firing, power conservation requirement.In addition, Viscous, the unstability energy of clinker improvement Circulating Fluidized Bed Ash.Therefore first clinker is configured to mix with Circulating Fluidized Bed Ash Ash meets the calorific value of combination ash after firing requires and reuses.
Preferably, in the step 1) of preparation method one and method two, the progress of high-efficiency vertical turbulent flow blender is can be used in mixing Mixing.
Preferably, in the step 2) of preparation method one, the water content for mixing and stirring material A is 26wt%~34wt%.
Preferably, in the step 2) of preparation method two, the water content for mixing and stirring material B is 26wt%~34wt%.
Preferably, in the step 2) of preparation method one and method two, mixing can be used auger mixing machine and be mixed.
Preferably, in the step 2) of preparation method one and method two, the time of old volt is distinguished >=7 days, and old volt is resulting to be mixed With material A or mix and stir material B it is spare.
Preferably, in preparation method one and method two, clinker, shale using it is preceding cleaned, pulverization process.
Preferably, in the step 3) of preparation method one, the partial size of pellet A is 4mm~10mm.
Preferably, in the step 3) of preparation method two, the partial size of pellet B is 4mm~10mm.
Preferably, in the step 3) of preparation method one and method two, being squeezed into item can be used the extruding of auger banded extruder At item, pelleter pelletizing is can be used in pelletizing, and the granulation of metal net cylinder pelletizer can be used in pelletizing.
Preferably, the step 4) of preparation method one be specifically: by pellet A input rotary kiln dry zone, 400 DEG C~ Dry 10min~20min at 600 DEG C；The roasting band for transferring to rotary kiln, at 500 DEG C~800 DEG C be sintered 20min~ Then 30min is sintered 10min~15min at 800 DEG C~1000 DEG C；The finally foaming and intumescing at 1000 DEG C~1150 DEG C 3min~8min.
Preferably, the step 4) of preparation method two be specifically: by pellet B input rotary kiln dry zone, 400 DEG C~ Dry 10min~20min at 600 DEG C；The roasting band for transferring to rotary kiln, at 700 DEG C~1200 DEG C be sintered 20min~ 30min。
Preferably, in the step 4) of preparation method one and method two, rotary kiln can be respectively adopted haydite prepare rotary kiln or Cascading type rotary kiln.
Preferably, in the step 4) of preparation method one and method two, rotary kiln is produced using existing desulphurization and denitration equipment Raw kiln flue gas is handled, and environment protection emission requirement is reached.
Preferably, in the step 5) of preparation method one and method two, natural cooling can be respectively adopted in cooling, or uses return air Formula cooler is cooling.
Preferably, in the step 5) of preparation method one, the expansion type Circulating Fluidized Bed Ash haydites of book structure partial size that discharges For 5mm~18mm.
Preferably, in the step 5) of preparation method two, the slug type Circulating Fluidized Bed Ash haydites of book structure partial size that discharges For 3mm~10mm.
Raw material used in Circulating Fluidized Bed Ash haydites of book structure of the present invention is described as follows further below:
Clinker used in the present invention is black, and containing a large amount of uncompleted burned carbon, calorific value is sent out up to 500~700kcal/kg Through overtesting, discovery is applied to prepare CFB ash haydites of book structure material and achieve good energy conservation and improve CFB ash to divide bright people Dissipate the technical effect of property.
Since CFB ash particle itself is superfine, water requirement is big, if volume is larger, viscosity is big, using the good clay of plasticity Ingredient is difficult to be squeezed into item, ball processed instead.Therefore, the present inventor is by test and trial production, using pulverized slag and lean property sand page Rock powder carries out compatibility, and the homocline of mix and molding effect are more preferable, and pellet is not easy to crack.
The beneficial effects of the present invention are:
Circulating Fluidized Bed Ash haydites of book structure of the present invention is a kind of artificial lightweight aggregate, including expansion type haydite and slug type pottery Grain, haydite performance are higher.The preparation method of Circulating Fluidized Bed Ash haydites of book structure of the present invention has waste residue utilization rate height, raw material sources Extensive advantage, and preparation process is relatively easy, short preparation period, energy saving.Obtained ceramic product can be used for gently collecting Expect the fields such as concrete, building product, plantation, filtering, insulation.
Detailed description of the invention
Fig. 1 is the preparation flow schematic diagram of Circulating Fluidized Bed Ash haydites of book structure of the present invention；
Fig. 2 is the XRD analysis map of Circulating Fluidized Bed Ash used in embodiment；
Fig. 3 is the particle size distribution figure of Circulating Fluidized Bed Ash used in embodiment.
Specific embodiment
Attached drawing 1 is the preparation flow schematic diagram of Circulating Fluidized Bed Ash haydites of book structure of the present invention.Below in conjunction with Fig. 1, pass through tool The embodiment of body is described in further detail the contents of the present invention.Raw materials/equipment used in embodiment is such as without special theory It is bright, it can be obtained from routine business approach.
Material used in embodiment is described as follows:
1, CFB ash
The chemical component of CFB ash is shown in Table 1, and the XRD spectrum of CFB ash is shown in that attached drawing 2, the particle size distribution figure of CFB ash are shown in attached drawing 3, The distribution of particles section of CFB ash is shown in Table 2.
The chemical component of 1 CFB ash of table
Ingredient Loss on ignition SiO2 Al2O3 Fe2O3 CaO MgO K2O Na2O SO3 TiO2 MnO2 P2O5
Content/wt% 3.41 32.37 10.50 14.56 30.00 1.59 0.75 0.14 5.06 0.57 0.26 0.12
The distribution of particles section of 2 CFB ash of table
Particle section 0~3 μm 3~30 μm 30~60 μm 60~86 μm >86μm
Volume content/% 16.70 56.77 14.62 6.36 5.55
Can be seen that the essential mineral in CFB ash from the XRD spectrum of Fig. 2 has: anhydrite, calcite, alpha-quartz, Mo Lai The composition such as stone, bloodstone, does not contain vitreum.
From Fig. 3 and table 2 it is found that the particle of CFB ash is concentrated mainly on 3~30 μm, 56.77% is accounted for.
2, clinker
The clinker that embodiment uses derives from boiler of power plant, and the chemical component of clinker is shown in Table 3.
The chemical component of 3 slag ash of table
Ingredient Loss on ignition SiO2 Al2O3 Fe2O3 CaO MgO K2O Na2O SO3 TiO2 P2O5
Content/wt% 11.88 42.52 32.20 3.32 5.02 0.52 0.60 1.24 0.77 1.24 0.33
Clinker is black, and containing a large amount of uncompleted burned carbon, calorific value is up to 500~700kcal/kg.
3, shale
Shale is lean property arenaceous shale, and the chemical component of shale is shown in Table 4.Since CFB ash particle itself is superfine, water requirement Greatly, viscosity is big, if volume is big, using the good clay ingredient of plasticity, is difficult to be squeezed into item, pelletizing instead.Therefore it uses and contains The higher lean property arenaceous shale of silicon.
The chemical component of 4 shale of table
Ingredient SiO2 Al2O3 Fe2O3 CaO MgO K2O Na2O
Content/wt% 61.60 26.15 1.52 1.22 1.35 1.60 1.20
Embodiment 1
The Circulating Fluidized Bed Ash haydites of book structure of embodiment 1 the preparation method is as follows:
1, prepared by raw material: 1. Circulating Fluidized Bed Ash (CFB): taking CFB ash, powdery (partial size is crushed into through impurity elimination, by agglomerate In 1mm or less)；2. clinker: taking clinker through impurity elimination, being crushed into powdery, (partial size is in 1mm or less)；3. shale: taking arenaceous shale (moisture content 10% or so), being ground into powdery, (partial size is in 0.5mm or less)；4. foaming agent: pureed iron cement (Fe2O3)。
2, ingredient: the quality proportioning of each raw material is: CFB ash 40%, arenaceous shale 25%, clinker 25%, foaming agent 10%.
Clinker and CFB ash are proportionally configured to combination ash, a small amount of water is added to be stirred and (reduce field dirt), combination ash Moisture content is 8%~12%, and the calorific value of combination ash reaches 400Kcal/Kg or more, and storage is stand-by.By combination ash and shale, hair Infusion adds water, proportionally carries out ingredient, is mixed into using screw mixer and mixes and stirs material, mix and stir material moisture content be 27%~ 31%, then it is old volt 7 days it is spare.
3, Chen Fuhao mixes and stirs material, and by being squeezed into item, cutting granulating is obtained by the round as a ball granulation of metallic cylinder mesh screen Partial size is the pellet of 4mm~8mm.
4, haydite is burnt into using rotary kiln.By the kiln tail dry zone of pellet input rotary kiln, start to dry under the conditions of 400 DEG C Dry, the time is 10min~20min.Then as the movement of rotary kiln, material rolling is transferred to roasting 500~800 DEG C of conditions of band 20~30min of lower sintering, semi-molten is sintered 10~15min under the conditions of transferring to 800~1000 DEG C, finally it is transferred to 1000~ Foaming haydite is made in 5~8min of foaming and intumescing under the conditions of 1150 DEG C.
5, foaming haydite rolls kiln discharge from kiln hood, and the Superlight ceramsites product that partial size is 5~15mm is made in natural cooling；Or Person is that the haydite that will foam enters cooler, and haydite is quickly cooled down, and hot wind enters recycling system, reaches energy-saving effect.
Embodiment 2
The quality proportioning of each raw material of the haydite of embodiment 2 is: CFB ash 45%, arenaceous shale 20%, clinker 20% foams Agent 15%.Remaining preparation method is identical as embodiment 1.
Embodiment 3
The quality proportioning of each raw material of the haydite of embodiment 3 is: CFB ash 50%, arenaceous shale 25%, clinker 15%, foaming Agent 10%.Remaining preparation method is identical as embodiment 1.
Embodiment 4
The quality proportioning of each raw material of the haydite of embodiment 4 is: CFB ash 55%, arenaceous shale 17%, clinker 20%, foaming Agent 8%.Remaining preparation method is identical as embodiment 1.
Embodiment 5
The Circulating Fluidized Bed Ash haydites of book structure of embodiment 5 the preparation method is as follows:
1) prepared by raw material: 1. Circulating Fluidized Bed Ash (CFB): taking CFB ash, powdery (partial size is crushed into through impurity elimination, by agglomerate In 1mm or less)；2. clinker: taking clinker through impurity elimination, being crushed into powdery, (partial size is in 1mm or less)；3. shale: taking arenaceous shale (moisture content 10% or so), being ground into powdery, (partial size is in 0.5mm or less).
2) ingredient: the quality proportioning of each raw material: CFB ash 60%, arenaceous shale 25%, clinker 15%.
CFB ash, clinker, shale and water are subjected to ingredient in proportion, mixed using screw mixer, mix is formed, In 400Kcal/Kg or more, the moisture content for mixing and stirring material is 28%~32% for calorific value control, then old volt is spare.
3) Chen Fuhao mixes and stirs material, is further mixed by auger extruder, and be extruded into item, through cutting granulating, By the round as a ball granulation of metallic cylinder mesh screen, the pellet that partial size is 4mm~10mm is obtained.
4) pellet is inputted in the dry zone of rotary kiln, dry 10min~20min at 400 DEG C~600 DEG C；It retransfers Roasting, sintering belt to rotary kiln are sintered 20min~30min at 700 DEG C~1200 DEG C.
5) haydite kiln discharge, natural cooling；Slug type haydite is either entered into cooler, haydite is quickly cooled down, heat Wind enters recycling system, reaches energy-saving effect.Kiln discharge finally obtains 3mm~8mm slug type haydite.
It is expansion type Circulating Fluidized Bed Ash haydites of book structure that Examples 1 to 4, which is prepared, and embodiment 5 is prepared to burn Junction type Circulating Fluidized Bed Ash haydites of book structure.
The results are shown in Table 5 for the haydite product detection of Examples 1 to 5.Detection method used is national standard, for this The common knowledge in field.
The haydite testing result of 5 Examples 1 to 5 of table
Detection project Embodiment 1 Embodiment 2 Embodiment 3 Embodiment 4 Embodiment 5
Density (kg/cm3) 500 400 450 380 800
Intensity (MPa) 2.0 1.3 1.5 1.0 6.5
Since, containing the product of power plant desulfurization, for producing sintering ceramsite, maximum problem is in calcination process in CFB ash Desulfurization product is discharged after decomposing with flue gas, causes secondary pollution.For this problem, the present invention is using modern desulphurization denitration equipment Kiln flue gas is handled, meet the requirement of environmental protection.
CFB ash is utilized by means of the present invention, a production line about dissolves 10~150,000 tons of CFB ashes and clinkers every year, The market Nian Kewei, which provides solid waste artificial lightweight aggregate high-strength ceramic granule, can reach 10~150,000 m3.20,000 tons of coal of mark or more can be saved every year, And system for desulfuration and denitration all can qualified discharge.The present invention is using Industrial Solid Waste CFB ash and clinker as primary raw material, preparation solid waste pottery Grain, only solid wastes recycling does not provide a kind of new technology, while providing a kind of artificial lightweight aggregate for construction market, replaces natural money Source, in short supply to alleviate construction sand, stone, production lightweight, energy saving green concrete are opened and keep away new way.It will generate good warp Ji, environmental protection and social benefit.

Claims (10)

1. a kind of Circulating Fluidized Bed Ash haydites of book structure, it is characterised in that: be made of the raw material of following mass percent: 40%~ 60% Circulating Fluidized Bed Ash, 15%~30% clinker, 15%~25% shale, 0%~15% foaming agent.
2. a kind of Circulating Fluidized Bed Ash haydites of book structure according to claim 1, it is characterised in that: Circulating Fluidized Bed Ash is to follow The off standard flyash of ring fluidized bed calcination discharge, the calorific value of recirculating fluidized bed are 100kcal/kg~350kcal/kg.
3. a kind of Circulating Fluidized Bed Ash haydites of book structure according to claim 1, it is characterised in that: clinker is boiler discharge Cinder, the calorific value of clinker are 500kcal/kg~700kcal/kg.
4. a kind of Circulating Fluidized Bed Ash haydites of book structure according to claim 1, it is characterised in that: shale is arenaceous shale, Silica quality content >=60% of shale.
5. a kind of Circulating Fluidized Bed Ash haydites of book structure according to claim 1, it is characterised in that: foaming agent is iron cement foaming Agent.
6. a kind of any one of Claims 1 to 5 preparation method of Circulating Fluidized Bed Ash haydites of book structure, it is characterised in that: be Any one of following methods:
Method one
When the dosage of foaming agent is not 0, preparation method the following steps are included:
1) Circulating Fluidized Bed Ash and clinker are mixed, obtains combination ash；
2) combination ash, shale, foaming agent and water are mixed, obtains mixing and stirring material A, Chen Fu；
3) material A will be mixed and stirred and obtain pellet A by being squeezed into item, pelletizing, pelletizing；
4) pellet A is dried with rotary kiln, is roasted, foaming processing；
5) cooling discharging obtains expansion type Circulating Fluidized Bed Ash haydites of book structure；
Method two
When the dosage of foaming agent be 0 when, preparation method the following steps are included:
1) Circulating Fluidized Bed Ash and clinker are mixed, obtains combination ash；
2) combination ash, shale and water are mixed, obtains mixing and stirring material B, Chen Fu；
3) material B will be mixed and stirred and obtain pellet B by being squeezed into item, pelletizing, pelletizing；
4) pellet B is dried with rotary kiln, is roasted, sintering processes；
5) cooling discharging obtains slug type Circulating Fluidized Bed Ash haydites of book structure.
7. a kind of preparation method of Circulating Fluidized Bed Ash haydites of book structure according to claim 6, it is characterised in that: one He of method In the step 1) of method two, the calorific value of combination ash control >=400Kcal/kg respectively.
8. a kind of preparation method of Circulating Fluidized Bed Ash haydites of book structure according to claim 6, it is characterised in that: mix and stir material A Water content with mix B is respectively 26wt%~34wt%.
9. a kind of preparation method of Circulating Fluidized Bed Ash haydites of book structure according to claim 6, it is characterised in that: method one Step 4) is specifically: by the dry zone of pellet A input rotary kiln, dry 10min~20min at 400 DEG C~600 DEG C；Turn again The roasting band for moving to rotary kiln is sintered 20min~30min at 500 DEG C~800 DEG C, is then sintered at 800 DEG C~1000 DEG C 10min~15min；Finally foaming and intumescing 3min~8min at 1000 DEG C~1150 DEG C.
10. a kind of preparation method of Circulating Fluidized Bed Ash haydites of book structure according to claim 6, it is characterised in that: method two Step 4) be specifically: by the dry zone of pellet B input rotary kiln, dry 10min~20min at 400 DEG C~600 DEG C；Again It is transferred to the roasting band of rotary kiln, 20min~30min is sintered at 700 DEG C~1200 DEG C.
CN201910136369.8A 2019-02-25 2019-02-25 A kind of Circulating Fluidized Bed Ash haydites of book structure and preparation method thereof Pending CN109627016A (en)

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CN117142872A (en) * 2023-08-31 2023-12-01 郑州市润宝耐火材料有限公司 Ceramsite propping agent prepared from high-siliceous raw materials and preparation method thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114269708A (en) * 2019-08-14 2022-04-01 维科Ip控股有限公司 Method for producing a granular ceramic mixture
CN114269708B (en) * 2019-08-14 2023-03-17 维科Ip控股有限公司 Method for producing a granular ceramic mixture
CN117142872A (en) * 2023-08-31 2023-12-01 郑州市润宝耐火材料有限公司 Ceramsite propping agent prepared from high-siliceous raw materials and preparation method thereof

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