CN1111516C - Light haydite of powdered coal ash and its preparing process - Google Patents

Light haydite of powdered coal ash and its preparing process Download PDF

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Publication number
CN1111516C
CN1111516C CN00110161A CN00110161A CN1111516C CN 1111516 C CN1111516 C CN 1111516C CN 00110161 A CN00110161 A CN 00110161A CN 00110161 A CN00110161 A CN 00110161A CN 1111516 C CN1111516 C CN 1111516C
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China
Prior art keywords
coal ash
haydite
minute
carbonate
powdered coal
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Expired - Fee Related
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CN00110161A
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Chinese (zh)
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CN1264688A (en
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赵传文
李仁福
张玉珍
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赵传文
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Priority to CN00110161A priority Critical patent/CN1111516C/en
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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
    • 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
    • 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
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • 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
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/20—Resistance against chemical, physical or biological attack
    • 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
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/20—Resistance against chemical, physical or biological attack
    • C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
    • 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)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Environmental & Geological Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Processing Of Solid Wastes (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

The present invention relates to light weight fly ash haydite which comprises the following chemical components: 55 to 65% of SiO2, 15 to 27% of Al2O3, 3 to 7% of Fe2O3, 0.2 to 0.6% of CaO, 0.3 to 0.5% of MgO and 4 to 6% of K2O and Na2O. The present invention has the fabrication technology that fly ash, binding agents and composite additive agents are used as raw materials and are mixed and dryly stirred for 3 to 4 minutes, and then mixtures are wetly stirred by adding water for 2 to 3 minutes and are calcined for 40 to 50 minutes. The novel light weight fly ash haydite has the advantages of high intensity, small density, heat preservation, thermal insulation, fire resistance, shock resistance, corrosion resistance, etc., and can be widely used for structural heat preserving projects, wide-span light aggregate concrete projects, oil production platform projects, cement ship projects and harbor and dock projects.

Description

Light haydite of powdered coal ash, its method for making and purposes and the holllow building block of making by this haydite
Invention field
The present invention relates to a kind of lytag and manufacturing process thereof, particularly a kind of is light haydite of powdered coal ash and the manufacturing process thereof that main raw material obtains with the wet-discharged coal ash.
Background of invention
Present widely used lytag mainly contains fires type lytag and burning free type lytag two big classes, wherein, fires the type lytag and is divided into the sintered type lytag again and burns two kinds of bloated type lytags by the internal structure difference.
The sintered type lytag has succeeded in developing and has dropped into suitability for industrialized production in China the sixties, the burning free type lytag was succeeded in developing and is applied the eighties.Yet these two kinds of haydites are bigger than normal because of density, and thermal property is relatively poor, are not suitable for Highrise buildings and replaced by light shale haydite and soft clay haydite.Leca is raw material with soil, the arable land of consume valuable; Though haydites of book structure does not consume the arable land, yet exploitation shale destroys mountain forest, is unfavorable for preserving the ecological environment.Therefore, the development of these two kinds of haydites all is subjected to restriction to a certain degree.Greatly develop light haydite of powdered coal ash and can make full use of trade waste, realize resource reutilization, help reducing pollution, protection environment, simultaneously, also can obtain considerable economic, social benefit and environmental benefit.
Summary of the invention
The objective of the invention is to utilize the wet-discharged coal ash of coal-fired power plant to be main raw material, a certain amount of binding agent of admixture and a spot of compound additive are produced high-strength light ceramic grain made from fly-ash by optimization proportioning, optimization processing condition.
Task of the present invention is to overcome the deficiencies in the prior art, utilize the wet-discharged coal ash of coal-fired power plant to be raw material, a certain amount of binding agent of admixture and a spot of compound additive, design a kind of manufacturing intensity height, density little, have insulation, heat insulation, fire-resistant, antidetonation, a corrosion-proof light lytag wet granulation process.
The chemical ingredients of lytag of the present invention is: SiO 255-65%, Al 2O 315-27%, Fe 2O 33-7%, CaO 0.2-0.6%, MgO 0.3-0.5%, K 2O+Na 2O 4-6%.
Lytag of the present invention is to be main raw material with the wet-discharged coal ash, the bloated type haydite of burning that admixture binding agent and compound additive form through roasting, raw material is formed and is comprised in parts by weight: wet-discharged coal ash 65-90 part, binding agent 10-25 part, compound additive 3-5 part, wherein said compound additive is composited by inorganic salt and organism, inorganic salt are selected from carbonate and vitriol, organism is selected from thin wood chip, sawdust powder, straw powder and corn cob meal, and this admixture consist of carbonate 15-25%, vitriol 35-45%, organism 35-50%.Described carbonate is selected from magnesiumcarbonate or lime carbonate etc.; Vitriol is selected from sal epsom, calcium sulfate, ferric sulfate, sodium sulfate or Tai-Ace S 150 etc.
The tap density of lytag provided by the invention is 450-590 kilogram/cubic meter, cylindrical compress strength 1.5-3.0Mpa.
The manufacturing process of lytag of the present invention is: raw material is mixed in proportion the back does stirring 3-4 minute, add wet granulation after 2-3 minute, roasting 40-50 minute of stirring of water; In the described roasting process: bake out temperature is 300-500 ℃, and the time is 10-25 minute; The salt decomposition temperature is 800-1000 ℃, and the time is 10-25 minute; Expansion temperature is 1100-1200 ℃, and the time is 5-10 minute.
Technical scheme of the present invention has following advantage:
1, the present invention adopts the wet granulation technology because main raw material is the wet-discharged coal ash of power plant, needn't dry, needn't be levigate, has reduced operation, has reduced cost.
2, because flyash is trade waste, utilize flyash to be the raw material production light haydite of powdered coal ash, make resource reutilization again, reduce the pollution protection environment.
3, light haydite of powdered coal ash can replace the light shale haydite and the soft clay haydite is made light ceramic holllow building block (apparent density 500-600kg/m 3) be used for curtain structure of high-rise building, also can be used as the thermal insulation building material be used to be mixed with the insulation heat resistance concrete be used for the insulation, heat-resisting, the fire prevention concrete works, the light haydite of powdered coal ash of density＞550kg/m3 can make the 200-300# lightweight aggregate concrete and be used for structural thermal insulation engineering and large span lightweight aggregate concrete engineering, the production vessel engineering, cement boats and ships and harbour, harbour engineering.In addition, also can be used as agriculture flowers cultivation and the solid root system material of soilless culture, and domestic water filtering medium and filler.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Specific embodiments
A most preferred embodiment of the present invention is that (its composition is SiO to get flyash 26%, Al 2O 324.39%, Fe 2O 33.98%, CaO 0.44%, MgO 0.6 3%, K 2O 3.73%, Na 2O 0.43%, SO 30.15%) 75 part, 20 parts (its composition is binding agent: clay, levigate shale powder, levigate colliery powder), 5 parts (its composition is: inorganic salt and organism are composited compound additive, wherein inorganic salts comprises for example magnesiumcarbonate of carbonate, lime carbonate, vitriol comprises calcium sulfate, ferric sulfate, sal epsom, sodium sulfate, Tai-Ace S 150 etc., organism is thin wood chip, sawdust powder, the straw powder, corn cob meal etc., wherein, carbonate 15-25%, vitriol 35-45%, organism 35-50%), mentioned component is mixed dried the stirring 3-4 minute, add the wet stirring of water 2-3 minute, roasting 40-50 minute, wherein bake out temperature is 300-500 ℃, and the time is 10-25 minute; The salt decomposition temperature is 800-1000 ℃, and the time is 10-25 minute; Expansion temperature is 1100-1200 ℃, and the time is 5-10 minute.The performance of light haydite of powdered coal ash: tap density is 450-590kg/m 3, water-intake rate 8-12%, cylindrical compress strength 1.5-3.0Mpa.The composition of its goods is: SiO 255-65%, Al 2O 315-27%, Fe 2O 33-7%, CaO0.2-0.6%, MgO 0.3-0.5%, K 2O+Na 2O 4-6%.
Second embodiment of the present invention: get 65 parts in flyash, 25 parts of binding agents, 10 parts of compound additives, mentioned component is mixed dried the stirring 3-4 minute, add the wet stirring of water 2-3 minute, roasting 40-50 minute, wherein bake out temperature is 300-500 ℃, and the time is 10-25 minute; The salt decomposition temperature is 800-1000 ℃, and the time is 10-25 minute; Expansion temperature is 1100-1200 ℃, and the time is 5-10 minute.

Claims (7)

1, a kind of light haydite of powdered coal ash, be to be main raw material with the wet-discharged coal ash, the bloated type haydite of burning that admixture binding agent and compound additive form through roasting, raw material is formed and is comprised in parts by weight: wet-discharged coal ash 65-90 part, binding agent 10-25 part, compound additive 3-5 part, wherein, binding agent is a clay, levigate shale powder or levigate colliery powder, described compound additive is composited by inorganic salt and organism, inorganic salt are selected from carbonate and vitriol, organism is selected from thin wood chip, sawdust powder, straw powder and corn cob meal, and this admixture consist of carbonate 15-25%, vitriol 35-45%, organism 35-50%.
2, the described light haydite of powdered coal ash of claim 1, wherein, the tap density of this haydite is 450-590 kilogram/cubic meter.
3, claim 1 or 2 described light haydite of powdered coal ash, wherein, described carbonate is selected from magnesiumcarbonate or lime carbonate; Vitriol is selected from sal epsom, calcium sulfate, ferric sulfate, sodium sulfate or Tai-Ace S 150.
4, the manufacture method of claim 1 or 2 described light haydite of powdered coal ash is mixed in proportion the back with raw material and does stirring 3-4 minute, adds wet granulation after 2-3 minute, roasting 40-50 minute of stirring of water; In the described roasting process: bake out temperature is 300-500 ℃, and the time is 10-25 minute, and the salt decomposition temperature is 800-1000 ℃, and the time is 10-25 minute, and expansion temperature is 1100-1200 ℃, and the time is 5-10 minute.
5, the described manufacture method of claim 4, wherein, used carbonate is selected from magnesiumcarbonate or lime carbonate in the preparation compound additive; Vitriol is selected from sal epsom, calcium sulfate, ferric sulfate, sodium sulfate or Tai-Ace S 150.
6, claim 1 or the 2 described light ceramics purposes in making material of construction, thermal insulation building material and domestic water filtering medium.
7, a kind of light ceramic holllow building block is made by claim 1 or 2 described light haydite of powdered coal ash.
CN00110161A 2000-02-25 2000-02-25 Light haydite of powdered coal ash and its preparing process Expired - Fee Related CN1111516C (en)

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CN1111516C true CN1111516C (en) 2003-06-18

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102062528A (en) * 2010-11-24 2011-05-18 北京建邦伟业机械制造有限公司 Fly ash product sintering furnace and method and formula thereof
CN108285326A (en) * 2018-03-07 2018-07-17 张家口盛博建筑科技有限公司 A kind of environmentally protective lytag and its preparation method and application

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DE102004029389B3 (en) * 2004-06-17 2005-11-03 Refractory Intellectual Property Gmbh & Co. Kg Burnt refractory molding
CN100354224C (en) * 2005-01-07 2007-12-12 武汉理工大学 Water release factor for controlling after expansion capacity of closed concrete and its preparation and use
CN100460355C (en) * 2006-07-05 2009-02-11 桂殿宝 Method for producing ceramic granule from oil sludge sand
CN101585698B (en) * 2009-07-03 2011-08-10 陕西科技大学 Method for preparing porcelain granules by using fly ash
CN101941850B (en) * 2010-08-11 2013-01-16 昆明理工大学 Method for firing ceramsite by coal slime
CN102167615B (en) * 2010-12-24 2013-05-22 范宇泉 Superstrong heat-preserving ceramsite and production method thereof
CN102863254B (en) * 2011-07-08 2014-08-20 黄世鲜 Nano-particle material and preparation method thereof
CN102390955B (en) * 2011-07-22 2013-09-25 宁波华旭自保温墙体材料有限公司 Ceramsite insulation block
CN102531447B (en) * 2011-12-12 2014-07-23 山西潞安矿业(集团)有限责任公司 Special additive for lytag concrete
CN103373837A (en) * 2012-04-18 2013-10-30 彰武欧亚水泥制品有限责任公司 Large-dosage fly ash haydite and hollow block prepared from same
CN103657499B (en) * 2013-11-19 2015-08-12 张京三 A kind of coal slime, wood chip mixed method and special equipment thereof
CN104909799A (en) * 2015-05-26 2015-09-16 福建省建筑科学研究院 Lightweight high-strength ceramsite and preparation method thereof
CN106396634B (en) * 2016-09-18 2019-05-28 攀枝花学院 The preparation method of light, and high-strength fly-ash haydite
CN107913688A (en) * 2017-11-17 2018-04-17 天津海得润滋建材有限公司 The preparation process of modified coal ash
CN109293372A (en) * 2018-10-26 2019-02-01 广东清大同科环保技术有限公司 A kind of functional material for electromagnetic wave absorption and preparation method thereof and wave absorption concrete
CN111470790B (en) * 2020-04-03 2021-11-12 桂林理工大学 Sound-absorbing ceramsite and preparation method and application thereof
CN111620663B (en) * 2020-04-30 2021-10-15 南京钜力智能制造技术研究院有限公司 Fly ash solid waste fiber non-sintered ceramsite and preparation method thereof
CN112125599B (en) * 2020-08-28 2022-04-05 同济大学 Preparation method of concrete decorative plate
CN113045327A (en) * 2021-04-19 2021-06-29 中国科学院过程工程研究所 Ceramsite and preparation method and application thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102062528A (en) * 2010-11-24 2011-05-18 北京建邦伟业机械制造有限公司 Fly ash product sintering furnace and method and formula thereof
CN108285326A (en) * 2018-03-07 2018-07-17 张家口盛博建筑科技有限公司 A kind of environmentally protective lytag and its preparation method and application

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