KR101228223B1 - Method to manufacture building materials using from electric arc slag by effective microorganisms treatment - Google Patents
Method to manufacture building materials using from electric arc slag by effective microorganisms treatment Download PDFInfo
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- KR101228223B1 KR101228223B1 KR20100107421A KR20100107421A KR101228223B1 KR 101228223 B1 KR101228223 B1 KR 101228223B1 KR 20100107421 A KR20100107421 A KR 20100107421A KR 20100107421 A KR20100107421 A KR 20100107421A KR 101228223 B1 KR101228223 B1 KR 101228223B1
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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
- 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
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/141—Slags
- C04B18/142—Steelmaking slags, converter slags
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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
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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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/0001—Living organisms, e.g. microorganisms, or enzymes
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- 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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- Ceramic Engineering (AREA)
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- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
본 발명은 전기로 슬래그를 수거하는 공정과; 상기 수거된 전기로 슬래그를 100℃ 이상 온도의 열풍을 발생하는 원통형의 회전체인 건조기 내부를 통과시켜 함수율 2.0%이하가 되도록 일정시간 동안 건조하는 공정과; 상기 건조된 전기로 슬래그를 미분쇄기에 넣고 입도 50 내지 250mesh가 되도록 분쇄하는 공정과; 상기 분쇄된 분말 전기로 슬래그에 물과 유용미생물 원액을 중량대비 1:400 내지 1:1000으로 희석한 액을 혼합하는 공정을 포함하는 유용미생물과 전기로 슬래그를 이용한 친환경 건축자재 제조방법을 제공하기 위한 것으로, 본 발명은 사용효율 및 활용범위가 극히 제한되던 전기로 슬래그와 유용미생물을 일련적인 공정을 통해서 친환경 건축자재로 재활용하여 경제적인 이익을 창출할 수 있는 효과를 갖는다. 또한, 본 발명은 유용미생물을 이용하여 전기로 슬래그에서 배출되는 유해물질을 최소화시켜 환경오염을 방지할 수 있는 효과를 갖는다.The present invention comprises the steps of collecting the slag with electricity; Passing the collected furnace slag through a dryer, which is a cylindrical rotating body that generates hot air at a temperature of 100 ° C. or more, and drying the slag for a predetermined time so as to have a water content of 2.0% or less; Putting the dried slag into a pulverizer and pulverizing it to a particle size of 50 to 250 mesh; To provide an environmentally friendly construction material manufacturing method using the useful microorganisms and electric furnace slag comprising the step of mixing the diluted powder electric furnace slag with a solution diluted 1: 400 to 1: 1000 relative to the weight of water and useful microbial stock solution. To this end, the present invention has the effect of generating economic benefits by recycling the electric furnace slag and useful microorganisms, which were extremely limited in use efficiency and range of application as an eco-friendly building material through a series of processes. In addition, the present invention has the effect of preventing the environmental pollution by minimizing the harmful substances discharged from the furnace slag using the useful microorganisms.
Description
본 발명은 유용미생물과 전기로 슬래그를 이용한 친환경 건축자재 제조방법에 관한 것으로, 더욱 상세하게는 제철소에서 발생하는 전기로 슬래그와 유용미생물을 일련적인 공정을 통해서 가공하여 친환경 건축자재로 재활용할 수 있도록 하는 유용미생물과 전기로 슬래그를 이용한 친환경 건축자재 제조방법에 관한 것이다.
The present invention relates to a method for manufacturing environmentally friendly building materials using useful microorganisms and electric furnace slag, and more particularly, to recycle electric furnace slag and useful microorganisms generated in steel mills through a series of processes to be recycled into environmentally friendly building materials. It relates to a method for manufacturing environmentally friendly building materials using useful microorganisms and electric furnace slag.
일반적으로 철강산업의 부산물인 전기로 슬래그는 1톤당 산화슬래그가 80kg 환원슬래가 50kg정도 발생된다. In general, furnace slag, a by-product of the steel industry, generates about 80 kg of oxidized slag and 50 kg of reduced slag per ton.
이러한 전기로 슬래그는 생석회 등과 같은 염기성의 유해물질이 포함되어 사용효율이 제한되는 문제점을 갖게 되었다.Such electric furnace slag has a problem that the use efficiency is limited because it contains basic harmful substances such as quicklime.
아울러 유용미생물(Effective Microorganisms:EM)은 수질이나 토양개량과 오수처리 목적 등으로 널리 활용되고 있다.In addition, effective microorganisms (EM) are widely used for water quality, soil improvement, and sewage treatment.
이에 최근에는 전기로 슬래그에 포함된 유해물질을 유용미생물을 이용하여 저감시켜 친환경 건축자재로 재활용하기 위한 방안이 그 어느 때보다 절실하게 요구되고 있는 실정이다.
Recently, there is an urgent need for a method for reducing harmful substances contained in electric furnace slag by using useful microorganisms and recycling them as eco-friendly building materials.
따라서 본 발명은 상기와 같은 종래의 문제점을 해결하기 위해 안출된 것으로서,Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art,
본 발명은 전기로 슬래그와 유용미생물을 일련적인 공정을 통해서 가공 및 생산하여 친환경 건축자재로 활용할 수 있도록 하는 유용미생물과 전기로 슬래그를 이용한 친환경 건축자재 제조방법을 제공함에 목적이 있다.
An object of the present invention is to provide an environmentally friendly building material manufacturing method using the useful microorganisms and electric furnace slag to be processed and produced through a series of processes and production of electric furnace slag and useful microorganisms.
본 발명은 전기로 슬래그를 수거하는 공정과; The present invention comprises the steps of collecting the slag with electricity;
상기 수거된 전기로 슬래그를 100℃ 이상 온도의 열풍을 발생하는 원통형의 회전체인 건조기 내부를 통과시켜 함수율 2.0%이하가 되도록 일정시간 동안 건조하는 공정과; Passing the collected furnace slag through a dryer, which is a cylindrical rotating body that generates hot air at a temperature of 100 ° C. or more, and drying the slag for a predetermined time so as to have a water content of 2.0% or less;
상기 건조된 전기로 슬래그를 미분쇄기에 넣고 입도 50 내지 250mesh가 되도록 분쇄하는 공정과; Putting the dried slag into a pulverizer and pulverizing it to a particle size of 50 to 250 mesh;
상기 분쇄된 분말 전기로 슬래그에 물과 유용미생물 원액을 중량대비 1:400 내지 1:1000으로 희석한 액을 혼합하는 공정을 포함하는 것을 특징으로 한다.
It characterized in that it comprises a step of mixing the diluted solution of water and useful microbial stock solution 1: 400 to 1: 1000 by weight to the pulverized powder furnace slag.
본 발명은 사용효율 및 활용범위가 극히 제한되던 전기로 슬래그와 유용미생물을 일련적인 공정을 통해서 친환경 건축자재로 재활용하여 경제적인 이익을 창출할 수 있는 효과를 갖는다.The present invention has the effect of generating economic benefits by recycling the electric furnace slag and useful microorganisms, which have been extremely limited in use efficiency and range of application, into a series of environmentally friendly building materials.
또한, 본 발명은 유용미생물을 이용하여 전기로 슬래그에서 배출되는 유해물질을 최소화시켜 환경오염을 방지할 수 있는 효과를 갖는다.
In addition, the present invention has the effect of preventing the environmental pollution by minimizing the harmful substances discharged from the furnace slag using the useful microorganisms.
상기한 바와 같은 목적을 달성하기 위한 본 발명 유용미생물과 전기로 슬래그를 이용한 친환경 건축자재 제조방법을 각 공정별로 나누어 상세하게 설명하면 다음과 같다.The present invention for achieving the above object is described in detail by dividing the environmentally friendly building materials manufacturing method using the useful microorganism and the electric furnace slag for each process as follows.
<수거공정><Collection process>
본 발명에서 사용되는 전기로 슬래그는 제철소의 제강공정에서 배출되는 폐기물의 일종으로, 환경오염을 방지하기 위해서 전기로 슬래그가 발생과 동시에 이를 별도의 저장탱크에 저장되도록 하고 이를 다시 운반차량을 이용하여 후속공정으로 운반하게 된다.Furnace slag used in the present invention is a kind of waste discharged from the steelmaking process of steel mills, in order to prevent environmental pollution, the furnace slag is generated and stored in a separate storage tank at the same time, and again using a transport vehicle Transported to subsequent processes.
이때 운반차량은 전기로 슬래그의 외부유출을 방지하기 위한 밀폐된 적재함(벌크)이 구비된 트럭을 사용함이 바람직하다.At this time, it is preferable that the transport vehicle uses a truck equipped with a sealed loading box (bulk) to prevent the outflow of the furnace slag.
따라서 전기로 슬래그를 보관하기 위한 별도의 야적장 및 항만의 부두가 필요 없게 되므로 야적장 및 부두의 활용효율이 향상됨은 물론 전기로 슬래그의 외부유출로 발생하는 환경오염을 최소화할 수 있게 된다.Therefore, it is not necessary to use a separate yard and harbor pier for storing the furnace slag, thereby improving utilization efficiency of the yard and pier and minimizing environmental pollution caused by the outflow of the furnace slag.
<건조공정><Drying step>
본 발명에서 건조공정은 수거된 전기로 슬래그에 함유된 수분을 제거하기 위한 공정으로, 특히 전기로 슬래그의 특성상 수분이 9.5 내지 19.0%가 함유되어 있으므로 유용미생물과 혼합 또는 활성화를 증대시키기 위해서 일정 함수율이 되도록 건조해야 한다.In the present invention, the drying process is a process for removing moisture contained in the collected furnace slag, and in particular, since the water contains 9.5 to 19.0% of water due to the characteristics of the furnace slag, a constant moisture content is increased to increase the mixing or activation with the useful microorganisms. This should be dried.
즉, 분쇄공정을 위한 전기로 슬래그에 수분이 함유되어 있으면 일정한 입도를 갖도록 분쇄작업이 불가능하고 또 그에 따른 장치의 과부하 및 불필요한 에너지의 소모가 커질 수밖에 없으므로, 결국 생산성의 저하는 물론 제조가격의 상승이 불가피하기 때문이다.In other words, if the electric furnace slag for the grinding process contains moisture, it is impossible to grind to have a certain particle size, and the overload and unnecessary energy consumption of the apparatus are inevitably increased, resulting in a decrease in productivity and a rise in manufacturing price. Because this is inevitable.
이를 위해 본 발명은 상기 수거된 전기로 슬래그를 열풍을 발생하는 원통형의 회전체인 건조기의 내부를 통과시켜 열풍으로 인해 전기로 슬래그에 함유된 수분이 증발시켜 건조공정을 완료하게 된다.To this end, the present invention passes through the collected electric furnace slag inside the dryer which is a cylindrical rotating body that generates hot air, thereby completing the drying process by evaporating the moisture contained in the electric furnace slag due to the hot air.
특히 상기 건조로의 내부 열풍온도는 100℃ 이상을 유지함이 바람직한데, 이는 100℃ 이하에서는 통상 수분이 증발하기 어려운 조건이므로 전기로 슬래그의 품질 및 가공효율이 저하되기 때문이다.In particular, the internal hot air temperature of the drying furnace is preferably maintained at 100 ℃ or more, because the water is difficult to evaporate under 100 ℃ usually because the quality and processing efficiency of the furnace slag is reduced.
이때 전기로 슬래그의 건조시간은 대략 40 내지 60분이 소요됨이 바람직한데, 이는 40분 이하의 시간이 소요될 경우 전기로 슬래그의 건조효율이 저하되어 함수율이 2.0%이하 되지 않으므로 유용미생물과 입자가 뭉쳐서 활성화가 진행되지 않고, 반대로 60분 이상의 시간이 소요되면 함수율이 너무 낮아져서 주변으로 쉽게 비산되어 환경문제가 대두되기 때문이다.At this time, the drying time of the electric furnace slag is preferably about 40 to 60 minutes, which is less than 40 minutes if the drying efficiency of the electric furnace slag is reduced and the moisture content is not less than 2.0% activated microorganisms and particles are activated If it does not proceed, on the contrary, if the time takes more than 60 minutes, the water content becomes too low and is easily scattered to the surroundings, causing environmental problems.
<분쇄공정><Grinding process>
본 발명에서 분쇄공정은 건조된 전기로 슬래그의 일정한 입도로 분쇄시켜 유용미생물과 혼합 및 활성화를 증대시키기 위한 매우 중요한 공정이다.In the present invention, the crushing process is a very important process for increasing the mixing and activation with the useful microorganisms by grinding to a constant particle size of the dried furnace slag.
이를 위해 건조된 전기로 슬래그를 미분쇄기에 넣고 입도 50 내지 250mesh가 되도록 분쇄하는데, For this purpose, the dried slag is put into a mill and pulverized to have a particle size of 50 to 250 mesh.
이때 건조된 전기로 슬래그의 입도가 50mesh 이하가 되면 유용미생물과 서로 달라붙게 되어 활성화가 저하되고, 반대로 건조된 전기로 슬래그의 입도가 250mesh 이상이 되면 비중이 너무 가벼워져 유용미생물과 활성화가 불필요하게 증대되어 사용효율이 저하되는 문제를 갖게 된다.At this time, when the particle size of the dried furnace slag is 50 mesh or less, the microorganisms adhere to each other with the useful microorganisms and the activation decreases. There is a problem that the use efficiency is reduced.
<혼합공정><Mixing process>
본 발명에서 혼합공정은 분쇄된 분말 전기로 슬래그에 물과 유용미생물 원액을 중량대비 1:400 내지 1:1000으로 희석한 액을 혼합하여 전기로 슬래그에 포함된 유해물질을 줄이기 위한 것이다.In the present invention, the mixing process is to reduce the harmful substances contained in the slag by mixing the diluted powder of water and the useful microbial stock solution 1: 400 to 1: 1000 in the crushed powder furnace slag.
이때 물과 유용미생물 원액은 중량대비 1:400 내지 1:1000으로 희석하여 분말 전기로 슬래그와 혼합하게 되는데, 이는 전기로 슬래그를 콘크리트에 첨가하는 비율에 따라서 선택적으로 달라질 수 있다.In this case, the water and the useful microbial stock solution are diluted 1: 400 to 1: 1000 by weight, and mixed with the powdered furnace slag, which may be selectively changed depending on the ratio of adding the furnace slag to the concrete.
전술한 본 발명 유용미생물과 전기로 슬래그를 이용한 친환경 건축자재 제조방법을 통해서 제조된 조성물을 첨가한 모르타르 및 콘크리트와 미첨가한 모르타르 및 콘크리트를 VOCs 발생 용기에 넣고 밀폐하고, 60℃에서 12시간 VOC를 발생시켜 흡착튜브에 발생된 VOC 흡착한 후, 가스크로마토그라피(GC-MS)를 사용하여 VOC를 분석하였으며, Mortar and concrete to which the composition prepared by using the above-described useful microorganism and electric furnace slag manufacturing method are added and sealed in the VOCs generating container and sealed, VOC at 60 ℃ for 12 hours After adsorbing the generated VOC in the adsorption tube, and analyzed the VOC using gas chromatography (GC-MS),
이에 대한 유용미생물 처리한 항산화 모르타르와 일반 모르타르를 실험한 결과는 표 1과 같았다.The results of testing the useful microorganism-treated antioxidant mortar and general mortar are shown in Table 1.
일반 모르타르에서 발생되는 VOC그래프는 표 2와 같았다.The VOC graph generated from the general mortar is shown in Table 2.
항산화 모르타르에서 발생되는 VOC그래프는 표 3과 같았다.The VOC graph generated from the antioxidant mortar is shown in Table 3.
또한, 유용미생물 처리한 콘크리트와 일반 콘크리트를 실험한 결과는 표 4와 같았다.In addition, the experimental results of the useful microorganism-treated concrete and concrete concrete are shown in Table 4.
일반 콘크리트에서 발생되는 VOC그래프는 표 5와 같았다.The VOC graph generated in the general concrete is shown in Table 5.
항산화 콘크리트에서 발생되는 VOC그래프는 표 6과 같았다.The VOC graph generated from antioxidant concrete is shown in Table 6.
따라서 본 발명은 유용미생물을 이용하여 지금까지 별다른 용도가 없던 전기로 슬래그를 친환경 건축자재로 사용하여 자원의 재활용은 물론 천연자원이 부족한 국내의 실정을 감안할 때 외화 절약에도 큰 도움이 될 수 있는 것이다.Therefore, the present invention can use the electric furnace slag, which has not been used so far, as an eco-friendly building material by using useful microorganisms, which can be a great help in saving foreign currency in consideration of domestic resources shortage as well as recycling of resources. .
이처럼 상기와 같이 본 발명의 실시예에 대하여 상세히 설명하였으나, 본 발명의 권리범위는 이에 한정되지 않으며, 본 발명의 실시예와 실질적으로 균등의 범위에 있는 것까지 본 발명의 권리범위가 포함되는 것은 당연할 것이다.As described above, the embodiments of the present invention have been described in detail, but the scope of the present invention is not limited thereto, and the scope of the present invention is included to those which are substantially equivalent to the embodiments of the present invention. Of course it will.
Claims (1)
상기 수거된 전기로 슬래그를 100℃ 이상 온도의 열풍을 발생하는 원통형의 회전체인 건조기 내부를 통과시켜 함수율 2.0%이하가 되도록 건조하는 공정과;
상기 건조된 전기로 슬래그를 미분쇄기에 넣고 입도 50 내지 250mesh가 되도록 분쇄하는 공정과;
상기 분쇄된 분말 전기로 슬래그에 물과 유용미생물 원액을 중량대비 1:400 내지 1:1000으로 희석한 액을 혼합하는 공정을 포함하는 것을 특징으로 하는 유용미생물과 전기로 슬래그를 이용한 친환경 건축자재 제조방법.Collecting slag with electricity;
Passing the collected furnace slag through a dryer, which is a cylindrical rotating body that generates hot air at a temperature of 100 ° C. or higher, and drying the slag to a water content of 2.0% or less;
Putting the dried slag into a pulverizer and pulverizing it to a particle size of 50 to 250 mesh;
Manufacturing eco-friendly building materials using the useful microorganisms and electric furnace slag, characterized in that it comprises the step of mixing the water and the useful microbial stock solution diluted 1: 400 to 1: 1000 by weight to the pulverized powder furnace slag Way.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2006027979A (en) | 2004-07-20 | 2006-02-02 | Nippon Road Co Ltd:The | Method for manufacturing recycled concrete and recycled concrete structure using the recycled concrete |
| KR100632976B1 (en) * | 2006-07-04 | 2006-10-16 | 김두진 | Eco friendly antifungal redy mixed concrete |
| KR100780489B1 (en) | 2007-04-26 | 2007-11-28 | 김두진 | Eco friendly antifungal mortar |
| KR20100071262A (en) * | 2008-12-19 | 2010-06-29 | 주식회사 포스코 | Method for using electric arc furnance oxidizing slag |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006027979A (en) | 2004-07-20 | 2006-02-02 | Nippon Road Co Ltd:The | Method for manufacturing recycled concrete and recycled concrete structure using the recycled concrete |
| KR100632976B1 (en) * | 2006-07-04 | 2006-10-16 | 김두진 | Eco friendly antifungal redy mixed concrete |
| KR100780489B1 (en) | 2007-04-26 | 2007-11-28 | 김두진 | Eco friendly antifungal mortar |
| KR20100071262A (en) * | 2008-12-19 | 2010-06-29 | 주식회사 포스코 | Method for using electric arc furnance oxidizing slag |
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