KR20110091163A - Method for recycling bottom ash - Google Patents

Method for recycling bottom ash Download PDF

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Publication number
KR20110091163A
KR20110091163A KR20100010872A KR20100010872A KR20110091163A KR 20110091163 A KR20110091163 A KR 20110091163A KR 20100010872 A KR20100010872 A KR 20100010872A KR 20100010872 A KR20100010872 A KR 20100010872A KR 20110091163 A KR20110091163 A KR 20110091163A
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South Korea
Prior art keywords
flooring
bottom ash
iron
water
gypsum
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KR20100010872A
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Korean (ko)
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안지환
한기천
유광석
김형석
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한국지질자원연구원
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Priority to KR20100010872A priority Critical patent/KR20110091163A/en
Publication of KR20110091163A publication Critical patent/KR20110091163A/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
    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/02—Treatment
    • C04B20/026—Comminuting, e.g. by grinding or breaking; Defibrillating fibres other than asbestos
    • 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
    • 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
    • C04B18/04—Waste materials; Refuse
    • C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
    • C04B18/10—Burned or pyrolised refuse
    • C04B18/105—Gaseous combustion products or dusts collected from waste incineration, e.g. sludge resulting from the purification of gaseous combustion products of waste incineration
    • 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
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Environmental & Geological Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Civil Engineering (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

PURPOSE: A method for recycling bottom ash generated in a wastes incinerating process is provided to eliminate toxic components such as iron and chlorides by implementing an iron component eliminating process, a pulverizing process, and a carbonating process. CONSTITUTION: Iron components are eliminated from bottom ash. The bottom ash without the iron components is primarily pulverized. The primarily pulverized bottom ash is mixed with water. A deposition process and a washing process are followed, and chlorides are eliminated from the bottom ash by injecting carbon dioxide gas. An alkaline material is added to the bottom ash. The washed bottom ash is secondarily pulverized. Gypsum is added to secondarily pulverized bottom ash. A pozzolan material is mixed with the bottom ash with the gypsum.

Description

폐기물 소각시 발생하는 바닥재의 재활용 방법 {Method for Recycling Bottom Ash}Recycling method of waste incineration {Method for Recycling Bottom Ash}

본 발명은 생활폐기물의 소각시 발생하는 바닥재의 재활용 방법에 관한 것으로, 더욱 상세하게는, 발생한 바닥재에 함유된 철 성분을 제거하고, 철 성분이 제거된 바닥재를 분쇄하고 탄산 이온을 주입하여 철 성분 및 염화물의 유해성분을 제거하는 바닥재 재활용 방법에 관한 것이다.
The present invention relates to a method for recycling flooring materials generated during incineration of domestic waste, and more particularly, to remove iron components contained in the generated flooring materials, to crush the flooring materials from which the iron components have been removed, and to inject carbonate ions. And a flooring recycling method for removing harmful components of chloride.

일반적으로 생활 폐기물을 처리하는 방법은 과거에 주로 매립처리 방법에 의존하였으나, 우리나라와 같이 국토 면적이 좁은 나라는 넓은 면적이 요구되는 매립장의 부지확보가 어렵고, 매립지 수명연장 차원에서 소각처리 방법이 주요 대안으로 추진되고 있다.In general, the method of treating domestic waste mainly depends on landfill, but in countries such as Korea, where land area is narrow, it is difficult to secure landfill sites that require a large area, and incineration is the main method for extending landfill life. It is being promoted as an alternative.

생활 폐기물을 포함한 고형 폐기물의 소각 후 발생하는 소각재는 크게 바닥재와 비산재로 분류되며, 이 중 특히 바닥재는 비산재에 비하여 다량으로 발생하나, 상대적으로 염소, 중금속 용출 등 환경적인 유해성이 낮아 재활용의 가능성이 크다. 그럼에도, 현재 바닥재의 전량이 매립되고 있는 실정이다.Incinutants generated after incineration of solid wastes, including household wastes, are classified into floor ashes and fly ashes. Among them, floor ashes are generated in a larger amount than fly ashes, but they are relatively low in environmental hazards such as chlorine and heavy metals. Big. Nevertheless, all of the flooring material is currently buried.

바닥재는 시멘트 원료, 토건재료로서 사용함에 있어서 바닥재에 함유된 염소성분, 중금속 등의 미량성분이 결정적인 영향을 미치고 있어서, 바닥재의 재활용에 장애를 일으키는 미량성분을 제거하기 위한 방법으로는, 풍화작용과 같이 장기간 방치하여 바닥재의 안정화를 도모하거나, 화학약품을 첨가하여 바닥재 내 중금속을 안정화시켜 용출량을 감소시키는 화학적 안정화 방법 등이 있다. 그러나, 풍화작용은 3개월 이상의 장기간이 소요되며 화학적 안정화법은 주로 사용되는 킬레이트제 화학약품이 고가라는 단점이 있다. 이에 물로 수세하여 미량성분을 용해시키는 방법이 바닥재의 안정화 시간과 경제성 면에서 우월한 것으로 평가받고 있다.As the flooring material is used as a cement raw material or a civil engineering material, the trace ingredients such as chlorine and heavy metals in the flooring material have a decisive influence. As long as it is left for a long time to stabilize the flooring, or by adding chemicals to stabilize the heavy metals in the flooring and the chemical stabilization method to reduce the amount of elution. However, weathering takes longer than 3 months and chemical stabilization has the disadvantage that the chelating agent chemicals used are expensive. Thus, the method of dissolving the trace components by washing with water is considered to be superior in terms of stabilization time and economic efficiency of the flooring material.

바닥재에 존재하는 미량의 중금속과 염소성분은 매립 및 이차적인 활용에 있어 토양, 지하수 오염 등 오염의 원인이 되며, 시멘트 원료 등으로 재활용하는 데는 시멘트 킬른 공정 및 제품의 품질에 문제를 일으킬 수 있어 이에 대한 적절한 처리방법이 필요하다.Traces of heavy metals and chlorine in the flooring may cause contamination such as soil and groundwater contamination in landfilling and secondary utilization, and recycling of cement raw materials may cause problems in the cement kiln process and product quality. Appropriate treatment is required.

한편, 최근에는 자원 재활용의 측면에서 이러한 생활 폐기물 소각로에서 배출되는 바닥재를 건축분야(골재 및 뒤채움재)등 자재로 재활용 시도를 하고 있으나, 일반 골재에 비해 낮은 비중 및 높은 조립률과 흡수율 때문에 재활용이 어려워 현재 거의 대부분 매립되는 실정이다. 따라서, 바닥재의 재활용은 환경보전과 자원의 리싸이클 측면에서 시급한 실정이다.Recently, in terms of recycling of resources, the floor ash discharged from the domestic waste incinerator has been attempted to be recycled into materials such as the construction field (aggregate and backfill), but due to the low specific gravity, high assembly rate, and absorption rate, It is difficult, so most of the landfill is currently. Therefore, recycling of flooring materials is urgent in terms of environmental conservation and recycling of resources.

이에, 본 발명자들은 폐기물 소각시 발생하는 바닥재의 재활용 및 환경 오염문제를 개선하기 위하여 예의 노력한 결과, 생활 폐기물의 소각시 발생하는 바닥재를 철 성분 및 염화물을 제거하여 처리함으로써 편리하고 경제적일 뿐만 아니라 처리된 바닥재는 바닥재의 재활용에 악영향을 미치는 요소가 제거되는 것을 확인하고 본 발명을 완성하게 되었다.
Accordingly, the present inventors have made a thorough effort to improve the problem of recycling and environmental pollution of the bottom ash generated during incineration of waste, and as a result, it is convenient and economical by treating the bottom ash generated during incineration of domestic waste by removing iron and chlorides. The finished flooring was confirmed that the elements that adversely affect the recycling of the flooring is removed and the present invention has been completed.

본 발명의 목적은 폐기물 소각시 발생하는 바닥재의 철 성분 및 염화물 등의 유해 물질을 제거하는 폐기물 바닥재의 재활용 방법을 제공하는 데 있다.
An object of the present invention is to provide a method for recycling waste flooring material to remove harmful substances such as iron components and chlorides of the flooring material generated during incineration of waste.

상기 목적을 달성하기 위하여, 본 발명은 (a) 바닥재에 함유된 철 성분을 제거하는 단계; (b) 상기 철 성분이 제거된 바닥재를 1차 분쇄하는 단계 및 1차 분쇄된 바닥재를 물과 혼합하여 일정 시간 동안 침적 및 수세하는 단계; (c) 상기 바닥재에 함유된 알루미늄금속과 반응하는 알칼리물질을 첨가하는 단계; (d) 상기 (b) 단계의 수세시에 탄산 가스를 주입하여 염화물을 제거하는 단계; (e) 상기 수세된 바닥재를 2차 분쇄하는 단계 ; (f) 상기 2차 분쇄된 바닥재에 석고를 첨가하는 단계; 및 (g) 상기 석고가 첨가된 바닥재에 포졸란 물질을 혼합하는 단계를 포함하는 소각시 발생하는 바닥재의 재활용 방법에 관한 것이다.
In order to achieve the above object, the present invention (a) removing the iron component contained in the flooring; (b) firstly crushing the bottom ash from which the iron component has been removed, and mixing the first crushed bottom ash with water for immersion and washing for a predetermined time; (c) adding an alkali material reacting with the aluminum metal contained in the flooring material; (d) injecting carbonic acid gas to remove the chloride during the washing of step (b); (e) secondary grinding of the washed flooring material; (f) adding gypsum to the secondary ground floor; And (g) mixing a pozzolanic material with the gypsum added flooring material.

본 발명의 폐기물 바닥재 처리방법은 폐기물을 소각시에 발생되는 바닥재를 공해없이 안정하게 처리할 수 있고, 바닥재의 철 성분 및 염화물을 제거함으로써 바닥재를 재생하며 건자재로 재활용할 수 있고, 자원을 절약하며 환경보전에 기여할 수 있게 된다.
Waste flooring treatment method of the present invention can safely treat the floorings generated during incineration of wastes without pollution, and by removing the iron and chlorides of the floorings, the floorings can be recycled and recycled as building materials, saving resources Contribute to environmental conservation.

도 1은 폐기물 바닥재의 처리방법을 나타낸 것이다.1 shows a method for treating waste flooring.

본 발명은 (a) 바닥재에 함유된 철 성분을 제거하는 단계; (b) 상기 철 성분이 제거된 바닥재를 1차 분쇄하는 단계 및 1차 분쇄된 바닥재를 물과 혼합하여 일정 시간 동안 침적 및 수세하는 단계; (c) 상기 바닥재에 함유된 알루미늄금속과 반응하는 알칼리물질을 첨가하는 단계; (d) 상기 (b) 단계의 수세시에 탄산 가스를 주입하여 염화물을 제거하는 단계; (e) 상기 수세된 바닥재를 2차 분쇄하는 단계 ; (f) 상기 2차 분쇄된 바닥재에 석고를 첨가하는 단계; 및 (g) 상기 석고가 첨가된 바닥재에 포졸란 물질을 혼합하는 단계를 포함하는 소각시 발생하는 바닥재의 재활용 방법에 관한 것이다.The present invention comprises the steps of (a) removing the iron component contained in the flooring; (b) firstly crushing the bottom ash from which the iron component has been removed, and mixing the first crushed bottom ash with water for immersion and washing for a predetermined time; (c) adding an alkali material reacting with the aluminum metal contained in the flooring material; (d) injecting carbonic acid gas to remove the chloride during the washing of step (b); (e) secondary grinding of the washed flooring material; (f) adding gypsum to the secondary ground floor; And (g) mixing a pozzolanic material with the gypsum added flooring material.

본 발명에서 1차 분쇄된 바닥재를 물에 침적하는 동안, 상기 바닥재에 함유된 알루미늄금속과 반응하는 알칼리물질은 통상적으로 바닥재 자체에 함유된 알칼리물질로도 충분하지만, 바닥재 자체의 알칼리물질이 부족할 경우, 바닥재 자체에 부족한 알칼리물질을 보충하여 콘크리트 강도를 감소시키는 알루미늄금속을 콘크리트 수화반응에 안정적인 물질로 변환시킬 수 있다.In the present invention, while the primary crushed flooring material is immersed in water, the alkali material reacting with the aluminum metal contained in the flooring material is usually sufficient as the alkali material contained in the flooring material itself, but when the alkali material of the flooring material itself is insufficient. In addition, it is possible to convert aluminum metal, which reduces the strength of concrete by replenishing alkali material deficient in the flooring itself, to a stable material for concrete hydration reaction.

본 발명에 있어서, 철 성분이 제거된 바닥재를 1차 분쇄하기에 앞서, 상기 철 성분이 제거된 바닥재를 일정 시간 동안 물에 침적 및 상기 물에 침적된 바닥재를 건조하는 단계를 더 포함하는 것을 특징으로 할 수 있다.In the present invention, prior to the first crushing of the floor material from which the iron component has been removed, further comprising the step of immersing the floor material from which the iron component is removed in water and drying the floor material deposited in the water for a predetermined time. You can do

본 발명에서, 철 성분이 제거된 바닥재를 1차 분쇄할 때, 상기 철 성분이 제거된 바닥재와 물을 일정 비율로 혼합하여 분쇄함으로써, 바닥재에 함유된 알루미늄금속과 알칼리물질 사이의 반응 효율과, 생석회와 물 사이의 반응 효율을 증대시킬 수 있게 된다.  In the present invention, in the first grinding of the flooring material from which the iron component has been removed, by mixing and grinding the flooring material from which the iron component is removed and water at a predetermined ratio, the reaction efficiency between the aluminum metal and the alkali material contained in the flooring material, It is possible to increase the reaction efficiency between quicklime and water.

상기 1차 분쇄된 바닥재를 2차 분쇄하고, 바닥재에 석고를 첨가한다. 상기 2차 분쇄된 바닥재에 석고를 첨가하는 단계와, 상기 석고가 첨가된 바닥재에 포졸란 물질을 혼합하는 단계를 더 포함함으로써, 석고가 첨가된 바닥재와 포졸란 물질을 혼합하여 이루어지는 콘크리트 혼합 재인 석탄재의 초기 강도의 저하를 보완할 뿐만 아니라 장기 강도를 더욱 향상시킬 수 있게 된다. 상기 포졸란 물질은 석탄재를 포함하며, 상기 석탄재에 상기 석고가 첨가된 2차 분쇄된 바닥재를 45중량％이하로 혼합함으로써, 포졸란 기능을 향상시키며, 바닥재는 콘크리트 혼화재인 석탄재의 결점을 보강하며 더욱 향상된 기능을 발휘할 수 있는 기능 향상제로서 재활용될 수 있게 된다.The first pulverized flooring material is pulverized second and gypsum is added to the flooring material. Adding a gypsum to the second crushed flooring material, and further comprising the step of mixing the pozzolanic material to the gypsum-added flooring material, the initial of the coal ash which is a concrete mixture made by mixing the flooring material and the pozzolan material added gypsum In addition to compensating for the decrease in strength, the long-term strength can be further improved. The pozzolanic material includes coal ash, and by mixing the coal ash with the secondary crushed bottom ash to 45% by weight or less, the pozzolanic function is improved, and the bottom ash reinforces and improves the defects of the coal ash, which is a concrete admixture. It can be recycled as a functional enhancer capable of functioning.

본 발명에서의 석탄재에 바닥재를 45중량％ 이하의 범위에서 혼합하여, 포졸란 반응의 기본물질인 소석회와 SiO2 ＋ Al2O3 함량을 적절하게 배합함으로써 포졸란 기능을 향상시키며, 바닥재는 콘크리트 혼화재인 석탄재의 결점을 보강하며 더욱 향상된 기능을 발휘할 수 있는 기능향상제로서 재활용될 수 있게 된다.The bottom ash is mixed with the coal ash according to the present invention in the range of 45% by weight or less, thereby improving the pozzolanic function by appropriately mixing the slaked lime, which is a basic material of the pozzolanic reaction, and SiO 2 + Al 2 O 3 , and the bottom ash is a concrete admixture. It can be recycled as a functional enhancer that can reinforce the flaw of coal ash and exhibit more advanced functions.

본 발명에 있어서, 탄산화과정은 H2O 와 소각 바닥재의 고액비(L/S)=10에서 CO2를 30분간 인위적으로 불어 넣어 주어 실시한 후 위와 같은 방법으로 염화물의 농도를 측정하였다.In the present invention, the carbonation process was performed by artificially blowing CO 2 at a solid-liquid ratio (L / S) = 10 of H 2 O and incineration flooring for 30 minutes, and then measuring the concentration of chloride in the same manner as described above.

폐기물 소각로에서 배출된 바닥재를 철 성분 제거, 1차 분쇄, 물에 침적, 탈수, 2차 분쇄함으로써, 바닥재를 재생하며 건자재로 재활용할 수 있고, 자원을 절약하며 환경보전에 기여할 수 있게 된다.
The bottom ash discharged from the waste incinerator can be removed by iron removal, primary crushing, immersion in water, dewatering and secondary crushing, so that the bottom ash can be recycled and recycled as a building material, saving resources and contributing to environmental conservation.

이하, 실시예를 통하여 본 발명을 더욱 상세히 설명하고자 한다. 이들 실시예는 오로지 본 발명을 예시하기 위한 것으로서, 본 발명의 범위가 이들 실시예에 의해 제한되는 것으로 해석되지 않는 것은 당업계에서 통상의 지식을 가진 자에게 있어서 자명할 것이다.
Hereinafter, the present invention will be described in more detail with reference to Examples. It is to be understood by those skilled in the art that these embodiments are merely illustrative of the present invention and that the scope of the present invention is not construed as being limited by these embodiments.

실시예Example 1 : 바닥재의 철 성분 제거 1: remove iron from flooring

폐기물 소각로에서 배출되는 바닥재를 입수하여, 마그네틱 세퍼레이터 등과 같은 장치를 통하여 바닥재에 통상 1∼5중량％ 정도 함유된 철 성분을 제거하였다. 이에, 콘크리트 수화반응에 불필요한 철 성분을 제거함과 동시에, 바닥재의 분쇄 효율을 증대시킬 수 있었다. 철 성분이 제거된 바닥재를 일정 시간 동안 물에 침적하여, 바닥재에 함유된 알루미늄금속과 생석회의 일부를 안정적인 물질로 반응시키고, 물에 침적된 바닥재를 건조시켰다. 철 성분이 제거된 바닥재를 일정 시간 동안 물에 침적한 후, 건조시키는 작업은 선택적으로 행할 수 있다.
The bottom ash discharged from the waste incinerator was obtained, and iron components contained in the bottom ash, usually about 1 to 5% by weight, were removed through a device such as a magnetic separator. As a result, the iron component unnecessary for the concrete hydration reaction was removed and the crushing efficiency of the flooring material was increased. The flooring material from which iron was removed was immersed in water for a predetermined time, and the aluminum metal contained in the flooring material and a part of quicklime reacted with a stable material, and the flooring material deposited in water was dried. After the iron material is removed, the flooring material is dipped in water for a predetermined time, and then the drying operation may be optionally performed.

실시예Example 2: 바닥재의 1차 분쇄 2: first grinding of flooring

철 성분이 제거된 바닥재를 분쇄기를 이용하여 1차 분쇄시켰다. 1차 분쇄를 통하여 바닥재에 함유된 알루미늄금속과 알칼리물질 사이의 반응 효율과, 생석회와 물 사이의 반응 효율을 증대시킬 수 있었다. 그리고, 1차 분쇄된 바닥재를 20분 이상 물에 침적시키고 수세하였다.
The bottom ash from which the iron component was removed was first crushed using a grinder. Through primary pulverization, the reaction efficiency between the aluminum metal and the alkali contained in the bottom ash and the reaction efficiency between the quicklime and the water could be increased. Then, the first ground floor was immersed in water for 20 minutes or more and washed with water.

실시예Example 3: 바닥재의 수세 3: flushing of flooring

1차 분쇄된 바닥재를 pH 5.8~6.3의 증류수 200㎖를 500㎖의 삼각플라스크에 넣고 고액비(L/S)를 5로 하여 측정대상인 바닥재 40g와 섞은 후, 200rpm의 교반속도로 20시간 동안 교반시켰다. 교반이 끝난 시료와 침출액은 마이크로필터를 이용하여 분리하였다.
Put the first ground floor ash 200ml of distilled water of pH 5.8 ~ 6.3 into 500ml Erlenmeyer flask and mix it with 40g of floor ash to be measured with a solid-liquid ratio (L / S) of 5, and then stir for 20 hours at a stirring speed of 200rpm. I was. The stirred sample and the leaching solution were separated using a micro filter.

실시예Example 3: 바닥재의 알칼리물질을 첨가 및 2차 분쇄 3: Add alkali material of flooring material and secondary grinding

나트륨을 함유한 알칼리물질(NaOH)과 알루미늄금속이 반응하여 알루민산 나트륨으로 회수되었고, 바닥재에 약 28∼40중량％정도 포함되어 있는 생석회(CaO)는 콘크리트 수화반응시 다량의 열을 발생하면서 팽창되어 콘크리트의 강도를 감소시키는 요인으로 작용하여, 생석회를 물과 반응시켜 소석회로 바꾸어 줌으로써, 콘크리트 혼화재의 기능 향상제로 사용시 강도가 감소하는 현상을 방지하였으며, 바닥재의 일부가 응결되어 있으므로 2차로 바닥재를 분쇄하였다.
Alkaline (NaOH) containing sodium reacted with aluminum metal to recover sodium aluminate, and quicklime (CaO) contained about 28 to 40% by weight in the bottom ash expanded while generating a large amount of heat during concrete hydration. It acts as a factor to decrease the strength of concrete, reacts quicklime with water and converts it into hydrated water, thereby preventing the phenomenon of decreasing strength when used as a function enhancer of concrete admixtures. Pulverized.

실시예Example 5: 바닥재에 석고 첨가 및 석고가 첨가된 바닥재에  5: Gypsum added to the flooring and plastered flooring 포졸란Pozolan 물질의 혼합 Mix of substances

석고를 5중량％ 첨가한 바닥재를 석탄재와 배합하고, 석탄재에 바닥재를 45중량％ 이하에서 혼합하여, 포졸란 반응의 기본물질인 소석회와 SiO2 ＋ Al2O3 함량을 적절하게 배합하여 포졸란 기능을 향상시키며, 바닥재는 콘크리트 혼화재인 석탄재의 결점을 보강하며 더욱 향상된 기능을 발휘할 수 있는 기능 향상제로서 재활용될 수 있음을 확인하였다.
The bottom ash added with 5% by weight of gypsum was mixed with coal ash, and the bottom ash was mixed with the ash at 45 wt% or less, and the slab lime and SiO 2 + Al 2 O 3 content, which is the basic material of the pozzolanic reaction, were properly blended to improve the pozzolanic function. In addition, it was confirmed that the flooring material can be recycled as a functional enhancer to reinforce the shortcomings of the coal ash, which is a concrete admixture, and to exhibit more improved functions.

실시예Example 6: 바닥재의  6: flooring 탄산화처리Carbonation

H2O 와 소각 바닥재의 고액비(L/S)=10에서 CO2를 30분간 인위적으로 불어 넣어 주어 실시한 후 위와 같은 방법으로 염화물의 농도를 측정하였다.
The concentration of chloride was measured by artificially blowing CO 2 at a solid-liquid ratio (L / S) = 10 of H 2 O and incinerated flooring for 30 minutes.

이상으로 본 발명 내용의 특정한 부분을 상세히 기술하였는 바, 당업계의 통상의 지식을 가진 자에게 있어서, 이러한 구체적 기술은 단지 바람직한 실시양태일뿐이며, 이에 의해 본 발명의 범위가 제한되는 것이 아닌 점은 명백할 것이다. 따라서 본 발명의 실질적인 범위는 첨부된 청구항들과 그것들의 등가물에 의하여 정의 된다고 할 것이다.As described above in detail the specific parts of the present invention, for those of ordinary skill in the art, these specific descriptions are only preferred embodiments, which are not intended to limit the scope of the present invention. Will be obvious. Therefore, the substantial scope of the present invention will be defined by the appended claims and their equivalents.

Claims (2)

다음의 단계를 포함하는 소각시 발생하는 바닥재의 재활용 방법:
(a) 바닥재에 함유된 철 성분을 제거하는 단계;
(b) 상기 철 성분이 제거된 바닥재를 1차 분쇄하는 단계 및 1차 분쇄된 바닥재를 물과 혼합하여 일정 시간 동안 침적 및 수세하는 단계;
(c) 상기 바닥재에 함유된 알루미늄금속과 반응하는 알칼리물질을 첨가하는 단계;
(d) 상기 (b) 단계의 수세시에 탄산 가스를 주입하여 염화물을 제거하는 단계;
(e) 상기 수세된 바닥재를 2차 분쇄하는 단계 ;
(f) 상기 2차 분쇄된 바닥재에 석고를 첨가하는 단계; 및
(g) 상기 석고가 첨가된 바닥재에 포졸란 물질을 혼합하는 단계.
How to recycle flooring from incineration, which includes the following steps:
(a) removing the iron component contained in the flooring;
(b) firstly crushing the bottom ash from which the iron component has been removed, and mixing the first crushed bottom ash with water for immersion and washing for a predetermined time;
(c) adding an alkali material reacting with the aluminum metal contained in the flooring material;
(d) injecting carbonic acid gas to remove the chloride during the washing of step (b);
(e) secondary grinding of the washed flooring material;
(f) adding gypsum to the secondary ground floor; And
(g) mixing the pozzolanic material to the gypsum added flooring.
제1항에 있어서, 철 성분이 제거된 바닥재를 1차 분쇄하기에 앞서, 상기 철 성분이 제거된 바닥재를 일정 시간 동안 물에 침적 및 상기 물에 침적된 바닥재를 건조하는 단계를 더 포함하는 것을 특징으로 하는 방법.The method of claim 1, further comprising the step of immersing the iron material removed flooring in water and drying the flooring material deposited in the water for a predetermined time prior to the first grinding of the iron material removed flooring. How to feature.
KR20100010872A 2010-02-05 2010-02-05 Method for recycling bottom ash KR20110091163A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101242569B1 (en) * 2012-11-15 2013-03-19 주식회사 백중개발 The natural friendly soil compound using bottom ash and phospho-gypsum
KR102221406B1 (en) 2020-04-24 2021-03-02 주식회사 국제플라텍 Method for manufacturing constructional block products using daily waste and business place waste incineration facility bottom ash)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101242569B1 (en) * 2012-11-15 2013-03-19 주식회사 백중개발 The natural friendly soil compound using bottom ash and phospho-gypsum
KR102221406B1 (en) 2020-04-24 2021-03-02 주식회사 국제플라텍 Method for manufacturing constructional block products using daily waste and business place waste incineration facility bottom ash)

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