CN1264688A - 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
CN1264688A
CN1264688A CN00110161A CN00110161A CN1264688A CN 1264688 A CN1264688 A CN 1264688A CN 00110161 A CN00110161 A CN 00110161A CN 00110161 A CN00110161 A CN 00110161A CN 1264688 A CN1264688 A CN 1264688A
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China
Prior art keywords
minute
coal ash
light
powdered coal
haydite
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CN00110161A
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CN1111516C (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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    • 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

Abstract

A light haydite used for thermal insulating engineering, light-aggregate concrete engineering, ship, dock, etc. contains such components as SiO2 (55-65%), Al2O3 (15-27%), Fe2O3 (3-7%), CaO (0.2-0.6%), MgO (0.3-0.5%) and K2O + Na2O (4-6%), and is prepared from powdered coal ash, adhesive and composite additive through mixing, stirring for 3-4 min, mixing with water for 2-3 min, and calcining for 40-50 min. Its advantages are light weight, high strength, low density, and high insulating, fire-retarding, anti-earthquake and anticorrosion performance.

Description

Light haydite of powdered coal ash and manufacturing process thereof
The present invention relates to a kind of prescription and granulation process, particularly light haydite of powdered coal ash and granulation process of lytag.
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.
Sintered type lytag China has succeeded in developing and has dropped into suitability for industrialized production 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.
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 the light, and high-strength fly-ash haydite by optimization proportioning, optimization processing condition.
Task of the present invention is: 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 intensity height, density little, have insulation, heat insulation, fire-resistant, antidetonation, a corrosion-proof light lytag wet granulation process.
Task of the present invention realizes as follows: the Chemical Composition of lytag is: SiO 255-65%, AL 2O 315-27%, Fe 2O 33-7%, CaO0.2-0.6%, MgO0.3-0.5%, K 2O+Na 2O4-6%.
Adopt flyash 65-90 part, binding agent 10-25 part, compound additive 3-5 part.
Its manufacturing process is with the dried stirring of above-mentioned batch mixes 3-4 minute, to 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, 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.
Technology 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, reduces operation, reduces finished product.
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 light shale haydite and soft clay haydite and makes light ceramic holllow building block (performance 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, density＞550kg/m 3Light haydite of powdered coal ash can make the light bone material concrete of 200-300# and be used for structural thermal insulation engineering and large span lightweight aggregate concrete engineering, 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.
Fig. 1 is a process flow sheet of the present invention.
A most preferred embodiment of the present invention, (its composition is SiO to get flyash 261%, AL 2O 324.39%, Fe 2O 33.98%, CaO0.44%, MgO0.63%, TiO 21.11%, K 2O3.73%, Na 2O0.43%, 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 carbonate, magnesiumcarbonate, 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 is 15-25%, vitriol is 35-45%, organism is 35-50%), above-mentioned composition is mixed dried the stirring 3-4 minute, added the water wet-mixing 2-3 minute, roasting 40-50 minute, wherein bake out temperature was 300-500 ℃, time 10-25 minute, the salt decomposition temperature is 800-1000 ℃, time 10-25 minute, expansion temperature was 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%, MgO0.3-0.5%, K 2O+Na 2O4-6%.
Second embodiment of the present invention, get 65 parts in flyash, 25 parts of binding agents, 10 parts of compound additives, above-mentioned composition is mixed to do stirred 3-4 minute, added the water wet-mixing 2-3 minute, roasting 40-50 minute, wherein, bake out temperature is 300-500 ℃, time 10-25 minute, the salt decomposition temperature is 800-1000 ℃, time 10-25 minute, expansion temperature was 1100-1200 ℃, and the time is 5-10 minute.

Claims (2)

1, a kind of light haydite of powdered coal ash is characterized in that its Chemical Composition is: SiO 255-65%, AL 2O 315-27%, Fe 2O 33-7%, CaO0.2-0.6%, MgO0.3-0.5%, K 2O+Na 2O4-6%.
2, light haydite of powdered coal ash as claimed in claim 1 is characterized in that: adopt following raw material to make: flyash 65-90 part, binding agent 10-25 part, compound additive 3-5 part.
Its manufacture craft is: above-mentioned batch mixes is done stirred 3-4 minute, add the wet stirring of water 2-3 minute, roasting 40-50 minute, wherein: bake out temperature was 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.
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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Application Number Priority Date Filing Date Title
CN00110161A CN1111516C (en) 2000-02-25 2000-02-25 Light haydite of powdered coal ash and its preparing process

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Application Number Priority Date Filing Date Title
CN00110161A CN1111516C (en) 2000-02-25 2000-02-25 Light haydite of powdered coal ash and its preparing process

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CN1264688A true CN1264688A (en) 2000-08-30
CN1111516C CN1111516C (en) 2003-06-18

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Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN100431741C (en) * 2004-06-17 2008-11-12 里弗雷克特里知识产权两合公司 Fired refractory shaped part
CN100460355C (en) * 2006-07-05 2009-02-11 桂殿宝 Method for producing ceramic granule from oil sludge sand
CN101941850A (en) * 2010-08-11 2011-01-12 昆明理工大学 Method for firing ceramsite by coal slime
CN101585698B (en) * 2009-07-03 2011-08-10 陕西科技大学 Method for preparing porcelain granules by using fly ash
CN102167615A (en) * 2010-12-24 2011-08-31 范宇泉 Superstrong heat-preserving ceramsite and production method thereof
CN102390955A (en) * 2011-07-22 2012-03-28 宁波华旭自保温墙体材料有限公司 Novel ceramsite insulation block
CN102531447A (en) * 2011-12-12 2012-07-04 山西潞安矿业(集团)有限责任公司 Special additive for lytag concrete
CN102863254A (en) * 2011-07-08 2013-01-09 黄世鲜 Nano-particle material and preparation method thereof
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
CN103657499A (en) * 2013-11-19 2014-03-26 张京三 Culm and chip mixing 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
CN106396634A (en) * 2016-09-18 2017-02-15 攀枝花学院 Preparation method of light-weight and high-intensity coal ash ceramsites
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
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
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
CN111470790A (en) * 2020-04-03 2020-07-31 桂林理工大学 Sound-absorbing ceramsite and preparation method and application thereof
CN111620663A (en) * 2020-04-30 2020-09-04 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
CN112125599A (en) * 2020-08-28 2020-12-25 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

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* 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

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100431741C (en) * 2004-06-17 2008-11-12 里弗雷克特里知识产权两合公司 Fired refractory shaped part
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
CN101941850A (en) * 2010-08-11 2011-01-12 昆明理工大学 Method for firing ceramsite by coal slime
CN101941850B (en) * 2010-08-11 2013-01-16 昆明理工大学 Method for firing ceramsite by coal slime
CN102167615A (en) * 2010-12-24 2011-08-31 范宇泉 Superstrong heat-preserving ceramsite and production method thereof
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
CN102863254A (en) * 2011-07-08 2013-01-09 黄世鲜 Nano-particle material and preparation method thereof
CN102390955A (en) * 2011-07-22 2012-03-28 宁波华旭自保温墙体材料有限公司 Novel ceramsite insulation block
CN102531447A (en) * 2011-12-12 2012-07-04 山西潞安矿业(集团)有限责任公司 Special additive for lytag concrete
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
CN103657499A (en) * 2013-11-19 2014-03-26 张京三 Culm and chip mixing 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
CN106396634A (en) * 2016-09-18 2017-02-15 攀枝花学院 Preparation method of light-weight and high-intensity coal ash ceramsites
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
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
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
CN111470790A (en) * 2020-04-03 2020-07-31 桂林理工大学 Sound-absorbing ceramsite and preparation method and application thereof
CN111470790B (en) * 2020-04-03 2021-11-12 桂林理工大学 Sound-absorbing ceramsite and preparation method and application thereof
CN111620663A (en) * 2020-04-30 2020-09-04 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
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
CN112125599A (en) * 2020-08-28 2020-12-25 同济大学 Preparation method of concrete decorative plate
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

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