CN113372130A - 一种飞灰及商砼搅拌站废料生产的发泡陶瓷及制备方法 - Google Patents
一种飞灰及商砼搅拌站废料生产的发泡陶瓷及制备方法 Download PDFInfo
- Publication number
- CN113372130A CN113372130A CN202110684473.8A CN202110684473A CN113372130A CN 113372130 A CN113372130 A CN 113372130A CN 202110684473 A CN202110684473 A CN 202110684473A CN 113372130 A CN113372130 A CN 113372130A
- Authority
- CN
- China
- Prior art keywords
- fly ash
- parts
- concrete mixing
- mixing plant
- commercial concrete
- 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.)
- Pending
Links
Images
Classifications
-
- 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
- C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
-
- 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
-
- 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
- C04B33/1355—Incineration residues
-
- 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
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/14—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silica
-
- 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
-
- 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
- C04B35/62605—Treating the starting powders individually or as mixtures
-
- 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
- C04B35/62605—Treating the starting powders individually or as mixtures
- C04B35/62645—Thermal treatment of powders or mixtures thereof other than sintering
- C04B35/62675—Thermal treatment of powders or mixtures thereof other than sintering characterised by the treatment temperature
-
- 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
- C04B2235/34—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
- C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
-
- 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
- C04B2235/34—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
-
- 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
- C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
- C04B2235/446—Sulfides, tellurides or selenides
-
- 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
- C04B2235/50—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
-
- 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
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6562—Heating rate
-
- 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
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6565—Cooling rate
-
- 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
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6567—Treatment time
-
- 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
一种飞灰及商砼搅拌站废料生产的发泡陶瓷,发泡陶瓷由下列原料制成,按重量计为:垃圾飞灰10‑60份,高岭土5‑35份,石英尾矿:10‑50份,发泡剂:0.1‑2份,商砼搅拌站废料:5‑40份。还提供一种飞灰及商砼搅拌站废料生产发泡陶瓷的方法,首先对飞灰进行水洗预处理,使飞灰中的含氯化合物的含量满足整个生产工艺的要求,再采用红外线热解电离技术处理飞灰原料,既可以去除飞灰中的二噁英等有害物质,又能对原料进行预玻璃化。更好的实现了对飞灰及商砼搅拌站废料的无害化。预玻璃化还能对原料进行干燥预热,方便进行高温烧结,提高了生产效率,节约能源。
Description
技术领域
本发明涉及固废危废物处理技术领域,具体涉及一种飞灰及商砼搅拌站废料生产的发泡陶瓷及制备方法。
背景技术
生活垃圾焚烧飞灰,是生活垃圾焚烧设施的烟气净化系统捕集物和烟道及烟囱底部沉降的底灰,简称“飞灰”。飞灰同时具有重金属危害特性和持久有机污染物危害特性;在焚烧飞灰中含有较高浓度且容易被水浸出的Pb、Cd、Cu、Cr及Zn等重金属,以及具有很强危害性的二恶英和呋喃,这些污染物质可以通过污染水体、土壤,进而危害到动植物和人体的健康,因此需要对垃圾焚烧飞灰进行无害化处理。而商砼搅拌站废料是混凝土生产过程中的废料,如果处理不当,随意倾倒,也会对环境产生污染。商砼搅拌站废料多为浆状、块状及混凝土混合物,里面含水分较少,含有大量钙硅物质,具有一定的强度。而飞灰经过水洗预处理后,含有大量水分,钙硅物质相对较少,如果能将两者按比例混合,进行协同处理,实现水分平衡和钙硅平衡,结合生产发泡陶瓷,进行资源化利用,是社会效益与经济效益完美结合的固体废物综合利用解决方案。
因此,本发明旨在提供一种利用垃圾飞灰及商砼搅拌站废料生产发泡陶瓷的方法,根据该方法利用飞灰和商砼搅拌站废料可以生产出具有高附加值和广阔应用前景的发泡陶瓷产品。
发明内容
本发明的目的是:克服现有技术的不足,提供一种飞灰及商砼搅拌站废料生产的发泡陶瓷及制备方法,一次实现含氯化合物处理,流程简单,节能降耗;通过特有配方实现飞灰和商砼搅拌站废料之间的水分平衡和钙硅平衡方面,协同化处理使原料得到充分利用,有利于后续产品制作;采用红外加热,对二噁英进行热解电离,实现原料预玻璃化,同时对原料进行干燥预热,方便下一步进行高温烧结。最终将飞灰进行彻底无害化和资源化,同时对商砼搅拌站废料进行资源化再利用,减少环境污染,生产出具有高附加值和广阔应用前景的发泡陶瓷产品。
本发明的技术方案是:一种飞灰及商砼搅拌站废料生产的发泡陶瓷,其原料组成配方(按重量计)如下表1所示,
进一步地,发泡剂可为FeS、Fe2O3、FeO、C、CaMg(CO3)2、CaCO3、SiC中的一种或多种。
本发明还提供一种飞灰及商砼搅拌站废料生产发泡陶瓷的制备方法,利用了前述的配方,具体包括如下步骤:
第一步,原料预处理
S11、首先,对飞灰进行水洗预处理,使飞灰中的含氯化合物充分溶解,确保处理后的飞灰中含氯量满足生产工艺控制中对于氯元素的需求。水洗配方中的水洗液体可以仅仅是纯净水,也可以在水洗液中加入碳酸钠溶液等可调节其PH值的试剂。
进一步的,水洗过程产生的废水一部分进行蒸发结晶,得到粗制氯盐,集中回收处理,另一部分废水可返回工艺流程进行循环使用,例如继续用于对飞灰进行水洗处理。
进一步的,洗过程产生的废水中一般含有SS、氨氮、TOC、重金属、钙离子等,水洗过程产生的废水在蒸发结晶前需进行提纯除杂处理,提纯除杂处理方法包括但不限于物理沉淀、添加沉淀剂、添加螯合剂、活性炭吸附方法;对废水的SS经沉淀与絮凝沉淀,所产生的沉淀余物收集后送至步骤S13处理;对废水中的重金属离子如铜、铅、锌等和钙离子等,采用不同的沉淀药剂进行反应去除;针对部分难沉淀的重金属离子,投加螯合剂形成螯合物沉淀物,螯合剂选用枸橼酸、EDTA和磷酸衍生物中的一种或多种,所产生的沉淀余物收集后送至步骤S13处理;对废水中的氨氮、TOC采用次氯酸钠氧化部分有机物,之后采用活性炭吸附,确保大部分有机物及氨得到有效去除,吸附后的活性炭收集后送至步骤S13处理。
S12、在料仓中使垃圾飞灰多批次均化,保证原料的稳定性。
S13、使用破碎设备,将其它原料进行破碎,保证物料颗粒的粒径小于200目。
第二步,混合原料,使水分平衡,钙硅平衡;
按前述配方的配比量取各种原料,在飞灰中加入量好的商砼搅拌站废料等原料,并采用湿法混合工艺处理,最终得到混合料。飞灰预处理后多水,商砼搅拌站废料少水多钙硅,按照本发明配方中飞灰与商砼搅拌站废料的配比混合原料,可以充分地实现水分平衡和钙硅平衡,协同化处理使原料得到充分利用。
第三步,制粉
对所得混合料使用压滤设备进行压滤处理,再干燥得到粉料。
第四步,红外加热;热解电离二噁英,粉料预玻璃化;
使用的热解电离系统对上一步的物料进行红外线加热,热解电离系统包括原料供给系统、燃烧室、洗涤器系统、热控系统及检测污染控制系统。加热温度控制在1800~1900℃,持续10-180min。热解电离设备采用两阶段处理,达到完全燃烧去除二噁英,实现对原料进行预玻璃化,同时对原料进行干燥预热,方便下一步进行高温烧结,燃烧废气通过湿式洗涤器处理后排放。
第五步,高温烧结;
使用高温烧结窑,将经上一步处理后的物料放入烧成窑中煅烧,烧成窑中采用的烧成温度为1000℃~1180℃;煅烧过程中温度变化方式为:首先,烧成窑中的温度从室温到850℃,采用100~200℃/h的升温速率,从850℃到烧成温度,采用200~350℃/h的升温速率;并在烧成温度保温0.5~2h,然后,从烧成温度到600℃,采用500~800℃/h的降温速率;从600℃到室温,采用300~500℃/h的降温速率,得到发泡陶瓷板半成品。
第六步,切割、检验、产品入库。
与现有技术相比本发明的有益效果:本发明的制备方法中,首先对飞灰进行水洗预处理,使飞灰中的含氯化合物的含量满足整个生产工艺的要求,再采用红外线热解电离技术处理飞灰原料,既可以去除飞灰中的二噁英等有害物质,又能对原料进行预玻璃化。经过预处理后的飞灰原料通过预玻璃化过程可实现对全部重金属的稳定固化,并且在高温烧结过程中对于烟尘的产生量和重金属的挥发起到有效抑制作用;更好的实现了对飞灰及商砼搅拌站废料的无害化。此外预玻璃化还能对原料进行干燥预热,方便下一步进行高温烧结,提高生产效率,节约能源。
附图说明
图1为本发明的工艺流程图。
具体实施方式
以下将结合具体实施例对本发明做进一步详细说明,本实施例中未具体说明的方法或工艺,均为现有技术。
实施例1
本发明的整体生产工艺流程如图1所示。
配方使用原料组成为:垃圾飞灰30份,高岭土25份,石英尾矿30份,发泡剂1份,商砼搅拌站废料14份,其中发泡剂为FeS,工艺如下:
第一步,原料预处理
S11、首先,对飞灰进行水洗预处理,使飞灰中的含氯化合物充分溶解,确保处理后的飞灰中含氯量满足生产工艺控制中对于氯元素的需求。本实施例中,水洗配方中的水洗液为纯净水。
进一步地,水洗过程产生的废水部分蒸发结晶,得到粗制氯盐,集中回收处理,部分返回工艺流程进行循环使用,无废水排放。
S12、在料仓中使垃圾飞灰多批次均化,保证原料的稳定性。
S13、使用破碎设备,将其它原料进行破碎,保证物料颗粒的粒径小于200目。
第二步,混合原料,使水分平衡,钙硅平衡;
按前述配方的配比量取各种原料,在飞灰中加入商砼搅拌站废料等原料,并采用湿法混合工艺处理,最终得到混合料。飞灰预处理后多水,商砼搅拌站废料少水多钙硅,按照本发明配方中飞灰与商砼搅拌站废料的配比混合原料,可以充分地实现水分平衡和钙硅平衡,协同化处理使原料得到充分利用。
第三步,制粉
对所得混合料使用压滤设备进行压滤处理,再干燥得到粉料。
第四步,红外加热;热解电离二噁英,粉料预玻璃化;
使用的热解电离系统对上一步的物料进行红外线加热,热解电离系统包括原料供给系统、燃烧室、洗涤器系统、热控系统及检测污染控制系统。加热温度控制在1800~1900℃,持续10-180min。热解电离设备采用两阶段处理,达到完全燃烧去除二噁英,实现对原料进行玻璃化,同时对原料进行干燥预热,方便下一步进行高温烧结,燃烧废气通过湿式洗涤器处理后排放。
第五步,高温烧结;
使用高温烧结窑,将经上一步处理后的物料放入烧成窑中煅烧,烧成窑中采用的烧成温度为1000℃~1180℃;煅烧过程中温度变化方式为:首先,烧成窑中的温度从室温到850℃,采用100~200℃/h的升温速率,从850℃到烧成温度,采用200~350℃/h的升温速率;并在烧成温度保温0.5~2h,然后,从烧成温度到600℃,采用500~800℃/h的降温速率;从600℃到室温,采用300~500℃/h的降温速率,得到发泡陶瓷板半成品。
第六步,切割、检验、产品入库。
以上仅为本发明的部分实施例而已,并不用于限制本发明,对于本领域的技术人员来说,本发明可以有前述各种技术特征的组合和变型,本领域的技术人员在不脱离本发明的精神和范围的前提下,对本发明的改进、变型、等同替换,或者将本发明的结构或方法用于其它领域以取得同样的效果,都属于本发明包括的保护范围。
Claims (9)
1.一种飞灰及商砼搅拌站废料生产的发泡陶瓷,其特征在于:发泡陶瓷由下列原料制成,按重量计为:垃圾飞灰10-60份,高岭土5-35份,石英尾矿:10-50份,发泡剂:0.1-2份,商砼搅拌站废料:5-40份,发泡剂可为FeS、Fe2O3、FeO、C、SiC中的一种或多种。
2.如权利要求1所述的一种飞灰及商砼搅拌站废料生产的发泡陶瓷,其特征在于:发泡陶瓷由下列原料制成,按重量计为:垃圾飞灰30份,高岭土25份,石英尾矿:30份,发泡剂:3份,商砼搅拌站废料:14份。
3.一种飞灰及商砼搅拌站废料生产发泡陶瓷的制备方法,其特征在于,采用权利要求1-2任一所述的配方;生产工艺包括如下步骤:
第一步,原料预处理,
S11、对飞灰进行水洗预处理,使飞灰中的含氯化合物充分溶解,确保处理后的飞灰中含氯量满足生产工艺控制中对于氯元素的需求;
S12、在料仓中使垃圾飞灰多批次均化,保证原料的稳定性;
S13、使用破碎设备,将其它原料进行破碎,保证物料颗粒的粒径小于200目;
第二步,混合原料,使水分平衡,钙硅平衡;
按前述配方的配比量取各种原料,其它原料加入到飞灰中,并采用湿法混合工艺处理,最终得到混合料;
第三步,制粉,
对所得混合料使用压滤设备进行压滤处理,再干燥得到粉料;
第四步,红外加热;
使用的热解电离系统对飞灰进行红外线加热,进行热解电离二噁英,使粉料玻璃化;
第五步,高温烧结;
使用高温烧成窑,将经上一步处理后的物料放入烧成窑中煅烧,烧成窑中采用的烧成温度为1000℃~1180℃;
第六步,切割、检验、产品入库。
4.根据权利要求3所述的一种飞灰及商砼搅拌站废料生产发泡陶瓷的制备方法,其特征在于:第一步中,水洗过程产生的废水一部分进行蒸发结晶,得到粗制氯盐,集中回收处理,另一部分返回工艺流程进行循环使用。
5.根据权利要求4所述的一种飞灰及商砼搅拌站废料生产发泡陶瓷的制备方法,其特征在于:第一步中,水洗过程产生的废水在蒸发结晶前进行提纯除杂处理,提纯除杂处理方法包括但不限于物理沉淀、添加沉淀剂、添加螯合剂、活性炭吸附方法,对处理后获得的沉淀余物或活性炭进行收集并在步骤S13中利用。
6.根据权利要求4所述的一种飞灰及商砼搅拌站废料生产发泡陶瓷的制备方法,其特征在于:第四步中,热解电离系统包括原料供给系统、燃烧室、洗涤器系统、热控系统及检测污染控制系统。
7.根据权利要求4所述的一种飞灰及商砼搅拌站废料生产发泡陶瓷的制备方法,其特征在于:第四步中,加热温度控制在1800~1900℃,持续10-180min。
8.根据权利要求4所述的一种飞灰及商砼搅拌站废料生产发泡陶瓷的制备方法,其特征在于:第四步中,燃烧废气通过湿式洗涤器处理后排放。
9.根据权利要求4所述的一种飞灰及商砼搅拌站废料生产发泡陶瓷的制备方法,其特征在于:第五步中,煅烧过程中温度变化方式为:首先,烧成窑中的温度从室温到850℃,采用100~200℃/h的升温速率;从850℃到烧成温度,采用200~350℃/h的升温速率;并在烧成温度保温0.5~2h,然后,从烧成温度到600℃,采用500~800℃/h的降温速率;从600℃到室温,采用300~500℃/h的降温速率。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202110684473.8A CN113372130A (zh) | 2021-06-21 | 2021-06-21 | 一种飞灰及商砼搅拌站废料生产的发泡陶瓷及制备方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202110684473.8A CN113372130A (zh) | 2021-06-21 | 2021-06-21 | 一种飞灰及商砼搅拌站废料生产的发泡陶瓷及制备方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN113372130A true CN113372130A (zh) | 2021-09-10 |
Family
ID=77577931
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202110684473.8A Pending CN113372130A (zh) | 2021-06-21 | 2021-06-21 | 一种飞灰及商砼搅拌站废料生产的发泡陶瓷及制备方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN113372130A (zh) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5268131A (en) * | 1989-11-30 | 1993-12-07 | Harrison George C | Method for making light weight ceramic particles |
JPH0925155A (ja) * | 1995-07-10 | 1997-01-28 | Tetra:Kk | 石炭灰を原料とする焼結体とその製造方法 |
JPH10226547A (ja) * | 1997-02-17 | 1998-08-25 | Sumitomo Metal Mining Co Ltd | 人工骨材の製造方法 |
CN1830885A (zh) * | 2006-03-20 | 2006-09-13 | 天津泰达环保有限公司 | 利用垃圾焚烧飞灰为原料的陶粒及其制备方法 |
CN107921492A (zh) * | 2015-02-17 | 2018-04-17 | 南洋理工大学 | 制造轻质材料的方法 |
CN108546143A (zh) * | 2018-04-13 | 2018-09-18 | 华南理工大学 | 一种高强多孔陶瓷及其低温制备方法 |
CN109180150A (zh) * | 2018-11-12 | 2019-01-11 | 张晓蓓 | 垃圾焚烧飞灰砖/瓦及其制备方法 |
CN111004051A (zh) * | 2019-12-31 | 2020-04-14 | 欧亚华都(宜兴)环保有限公司 | 一种废弃陶瓷掺杂垃圾焚烧飞灰烧结多孔陶瓷的方法 |
-
2021
- 2021-06-21 CN CN202110684473.8A patent/CN113372130A/zh active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5268131A (en) * | 1989-11-30 | 1993-12-07 | Harrison George C | Method for making light weight ceramic particles |
JPH0925155A (ja) * | 1995-07-10 | 1997-01-28 | Tetra:Kk | 石炭灰を原料とする焼結体とその製造方法 |
JPH10226547A (ja) * | 1997-02-17 | 1998-08-25 | Sumitomo Metal Mining Co Ltd | 人工骨材の製造方法 |
CN1830885A (zh) * | 2006-03-20 | 2006-09-13 | 天津泰达环保有限公司 | 利用垃圾焚烧飞灰为原料的陶粒及其制备方法 |
CN107921492A (zh) * | 2015-02-17 | 2018-04-17 | 南洋理工大学 | 制造轻质材料的方法 |
CN108546143A (zh) * | 2018-04-13 | 2018-09-18 | 华南理工大学 | 一种高强多孔陶瓷及其低温制备方法 |
CN109180150A (zh) * | 2018-11-12 | 2019-01-11 | 张晓蓓 | 垃圾焚烧飞灰砖/瓦及其制备方法 |
CN111004051A (zh) * | 2019-12-31 | 2020-04-14 | 欧亚华都(宜兴)环保有限公司 | 一种废弃陶瓷掺杂垃圾焚烧飞灰烧结多孔陶瓷的方法 |
Non-Patent Citations (4)
Title |
---|
中国环境科学学会编: "《中国环境科学学会学术论文集》", 30 June 2009, 北京航空航天大学出版社 * |
尹华强等: "《绿色火电技术》", 31 December 2019, 上海交通大学出版社 * |
杜伟强等: "粉煤灰基多孔陶瓷粒的制备及捕集大气细颗粒物的性能", 《大连工业大学学报》 * |
陈德珍等: "《固体废物热处理技术》", 31 August 2020, 同济大学出版社 * |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN107652976B (zh) | 一种矿物基土壤修复剂及其制备方法 | |
CN108480360B (zh) | 回转窑熔融法飞灰全资源回收利用及尾气超净排放方法 | |
CN106082646B (zh) | 利用电镀污泥与生活垃圾焚烧飞灰协同熔融制备玻璃沙的方法 | |
CN107159678B (zh) | 铁矿烧结协同处理垃圾飞灰过程的二噁英控制方法 | |
CN109404916B (zh) | 一种垃圾焚烧飞灰高温熔融无害化处理工艺 | |
CN106984633B (zh) | 利用等离子体炬资源化处理垃圾焚烧飞灰的方法 | |
JP5175995B1 (ja) | 土壌からの放射性セシウム除去方法 | |
CN110357578A (zh) | 利用陶粒窑处置固体废弃物的方法及处置固体废弃物的陶粒窑 | |
CN105712739B (zh) | 一种由垃圾焚烧飞灰制备的磁性生物陶粒及其制备方法 | |
Gianoncelli et al. | Fly ash pollutants, treatment and recycling | |
CN111068612A (zh) | 利用固体废弃物制备类沸石型多孔材料的方法、类沸石型多孔材料及其应用 | |
CN113372133A (zh) | 一种以垃圾焚烧飞灰为主体生产陶粒的配方与方法 | |
CN110436806A (zh) | 一种增强重金属固化效果的添加剂及其应用与使用方法 | |
CN112222149A (zh) | 一种热脱附垃圾焚烧飞灰的处理系统及其工艺 | |
CN110040809A (zh) | 一种飞灰和脱硫废水协同处理固化重金属的方法 | |
CN113402257A (zh) | 一种以垃圾焚烧飞灰为主体生产发泡陶瓷的配方与方法 | |
JP2014174115A (ja) | 土壌からの放射性セシウム除去方法 | |
CN102657926B (zh) | 一种重金属常温固化剂及使用其固化重金属污染物中重金属的方法 | |
CN106642152A (zh) | 一种污泥和垃圾飞灰混合焚烧无害化处置及综合利用的方法 | |
JPH0199678A (ja) | 非水溶性粒体、成形体等の製造のための方法及び装置 | |
CN108571736A (zh) | 一种以粉煤灰为添加剂无害化处理高盐废水的方法 | |
CN113372130A (zh) | 一种飞灰及商砼搅拌站废料生产的发泡陶瓷及制备方法 | |
CN111056759A (zh) | 一种核壳结构陶粒包覆层添加剂及其应用 | |
CN109251729A (zh) | 一种利用垃圾飞灰同时制备ⅰ型和ⅱ型融雪剂的方法 | |
CN114349477A (zh) | 一种高铬渣量解毒配方及协同轻集料生产的工艺 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination |