KR20030090295A - Recycle technology of the waste stone powder and concrete products - Google Patents
Recycle technology of the waste stone powder and concrete products Download PDFInfo
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- KR20030090295A KR20030090295A KR1020020028347A KR20020028347A KR20030090295A KR 20030090295 A KR20030090295 A KR 20030090295A KR 1020020028347 A KR1020020028347 A KR 1020020028347A KR 20020028347 A KR20020028347 A KR 20020028347A KR 20030090295 A KR20030090295 A KR 20030090295A
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- waste
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- concrete
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- stone
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- 239000000843 powder Substances 0.000 title claims abstract description 43
- 239000004575 stone Substances 0.000 title claims abstract description 31
- 239000002699 waste material Substances 0.000 title claims abstract description 23
- 238000005516 engineering process Methods 0.000 title description 3
- 238000000034 method Methods 0.000 claims abstract description 23
- 238000004064 recycling Methods 0.000 claims abstract description 18
- 239000010878 waste rock Substances 0.000 claims abstract description 16
- 238000012545 processing Methods 0.000 claims abstract description 13
- 239000010802 sludge Substances 0.000 claims abstract description 13
- 239000002245 particle Substances 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000000498 cooling water Substances 0.000 claims abstract description 5
- 238000001035 drying Methods 0.000 claims abstract description 5
- 238000005520 cutting process Methods 0.000 claims abstract description 4
- 239000004576 sand Substances 0.000 claims description 11
- 239000004568 cement Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 230000018044 dehydration Effects 0.000 claims description 2
- 238000006297 dehydration reaction Methods 0.000 claims description 2
- 239000006227 byproduct Substances 0.000 claims 2
- 239000000047 product Substances 0.000 claims 1
- 238000001914 filtration Methods 0.000 abstract description 10
- 239000000463 material Substances 0.000 abstract description 10
- 238000004062 sedimentation Methods 0.000 abstract description 8
- 230000007613 environmental effect Effects 0.000 abstract description 7
- 239000000945 filler Substances 0.000 abstract description 5
- 238000001556 precipitation Methods 0.000 abstract description 5
- 239000000049 pigment Substances 0.000 abstract description 4
- 239000003973 paint Substances 0.000 abstract description 3
- 238000002474 experimental method Methods 0.000 description 5
- 238000002156 mixing Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 239000003623 enhancer Substances 0.000 description 3
- -1 gravel Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910001341 Crude steel Inorganic materials 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000010169 landfilling Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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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
- C04B18/12—Waste materials; Refuse from quarries, mining or the like
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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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
석재가공공장의 석재절단 가공시에 냉각수로 공급되는 물과 함께 발생되는 슬러지에 대하여 다수회에 걸쳐 침전 및 여과처리하여 최소한의 수분을 함유한 입도 50 ~ 1500 ㎛ 의 폐석가루를 재활용하는 방법에 관한 것으로, 상기 폐석가루는 침전과 여과 등의 여러 공정에 의해서 각 공정별 발생 입도가 다르며 물에 의해 세척여과된 상태이므로 깨끗하고 질 좋은 재료로서 콘크리트의 혼합재로 사용함에 있어서 전혀 손색이 없고, 또한 각 공정별 상태에 따라 완전건조후 정밀 분쇄하여 페인트 안료나 충진제 등으로 사용이 가능한 소재로 활용함으로써 재활용을 통한 환경문제를 해결하고 저비용 및 다용도의 제품을 제공한다.A method for recycling waste stone powder having a particle size of 50 ~ 1500 ㎛ containing minimum moisture by sedimentation and filtration for sludge generated together with water supplied to cooling water during stone cutting process of stone processing plant. Since the waste-rock powder has different particle sizes generated by each process by various processes such as precipitation and filtration and is washed and filtered by water, it is not inferior in use as a mixed material of concrete as a clean and good material. After complete drying according to the state of each process, it is precisely ground and used as a material that can be used as a paint pigment or filler to solve environmental problems through recycling and provide a low cost and versatile product.
Description
본 발명은 석재가공공장에서 발생하는 폐기물인 슬러지를 침전, 여과처리하여 콘크리트에 사용되는 골재로 사용할 수 있을 뿐만아니라 추가적인 가공을 통하여 페인트안료, 충진제 등으로 사용할 수 있는 폐석가루의 재활용 방법에 관한 것이다.The present invention relates to a method for recycling waste stone powder which can be used as aggregates used in concrete by sedimenting and filtering sludge, which is a waste generated from a stone processing plant, and further processing. .
건설분야에서 사용되는 콘크리트는 주로 시멘트와 자갈 및 모래로 구성되는데, 채취할 수 있는 천연 골재의 양은 한정되어 있으며 환경영향평가 등의 시행으로 점차 천연 골재를 채취하기 어려운 상황에서 천연 골재를 대체하기 위한 재활용 제품개발에 관심이 집중되고 있다.Concrete used in the construction field is mainly composed of cement, gravel and sand, and the amount of natural aggregate that can be collected is limited and it is necessary to replace natural aggregate in the situation where it is difficult to collect natural aggregate gradually through environmental impact assessment. Attention is focused on the development of recycled products.
최근 산업분야에서 발생하는 산업폐기물의 양은 급격히 증가하고 있지만 재활용하기 위하여 필요한 시설 및 처리비용이 높아 재활용율은 극히 저조하며, 따라서 단순히 매립에 의존하고 있는 형편이다. 하지만, 매립지의 확보도 간단한 문제가 아니며 이에 따라 폐기물처리에 상당한 비용과 노력이 요구되고 있다.Recently, the amount of industrial waste generated in the industrial sector is rapidly increasing, but the recycling rate is extremely low due to the high facility and disposal costs required for recycling, and thus, it is simply dependent on landfilling. However, securing landfills is not a simple matter, and therefore, a considerable cost and effort are required for waste disposal.
일반적으로 콘크리트 재활용제로서는 건축폐기물과 폐콘크리트 등을 분쇄하고 여러단계의 처리공정을 거쳐 재활용골재를 생산하는 재활용기술이 널리 사용되고 있다. 본 발명의 재활용 기술은 석재가공공장에서 석재가공 및 절단하는 가공공정에서는 마찰력저감을 위하여 냉각수를 사용하는데, 이 때 냉각수와 함께 미세분말의 불균일한 입도의 슬러지가 발생한다.In general, as a concrete recycling agent, a recycling technology for crushing construction waste and waste concrete, and producing recycled aggregates through various stages of treatment is widely used. Recycling technology of the present invention uses a cooling water for reducing the friction in the stone processing and cutting process in the stone processing plant, at this time the non-uniform particle size sludge of the fine powder is generated with the cooling water.
이러한 슬러지는 초기발생 상태에서 유동성이 높은 액상 상태이나 건조후에는 약간 응고된 상태에서 불규칙한 형상을 이루고 있으며 기존의 건축 폐기물이나 폐콘크리트와 같이 고체형상이 아닌 반유동적인 상태로 폐기물 재활용 업체조차 본 슬러지의 처리를 회피하는 상황으로 년간 약 백만톤 이상의 본 슬러지가 무단방류 또는 무단매립되고 있는 상황이다.Such sludge has an irregular shape in a liquid state with high fluidity in the initial generation state or slightly solidified state after drying, and is not even a solid state like conventional construction waste or waste concrete. In this situation, more than 1 million tons of sludge is discharged or landfilled annually.
본원 발명은 이러한 사정을 감안하여 이루어진 것으로 상기 폐석가루를 침전과 여과 등의 여러 처리공정에 의해 각 공정별 발생 입도가 틀리며 물에 의해 세척여과된 깨끗하고 질 좋은 재료로서 콘크리트의 혼합재로 사용함에 있어서 전혀 손색이 없고 또한 각 공정별 상태에 따라 완전건조후 정밀 분쇄하여 페인트 안료나 충진제 등 여러곳에 사용이 가능한 소재로 활용함으로써 재활용을 통한 환경문제를 해결하고 저비용의 제품을 제공한다.The present invention has been made in view of the above circumstances, and in the use of the waste stone powder as a mixed material of concrete as a clean and good material that is different in particle size generated by each process by various treatment processes such as sedimentation and filtration and washed with water. It is not inferior at all, and after being completely dried according to the state of each process, it is used as a material that can be used in various places such as paint pigments and fillers, thereby solving environmental problems through recycling and providing low cost products.
도 1 은 본 발명에 관한 공정블럭도이다.1 is a process block diagram according to the present invention.
본 발명은 석재가공공장에서 발생되는 폐석가루의 재활용방법에 있어서, 석재절단 가공시에 냉각수로 공급되는 물과 함께 발생되는 슬러지에 대하여 다수회에 걸쳐서 침전 및 여과처리하여 각각의 침전조로부터 최소한의 수분을 함유한 입도 50 ~ 1500 ㎛의 폐석가루를 얻는 것을 특징으로 한다.The present invention is a method for recycling waste stone powder generated in a stone processing plant, which is precipitated and filtered a plurality of times for sludge generated together with water supplied to cooling water during a stone cutting process to minimize moisture from each sedimentation tank. It is characterized in that the waste-rock powder having a particle size of 50 ~ 1500 ㎛ containing.
본 발명은 이와 같이 다수회에 걸쳐서 침전 및 여과처리하여 산출된 폐석가루를 모래, 자갈, 시멘트와 함께 혼합하여 콘크리트를 배합제조하는 것을 특징으로 한다.The present invention is characterized in that by mixing the waste-rock powder produced by the precipitation and filtration treatment for a plurality of times with sand, gravel, cement to mix and manufacture concrete.
본 발명은 모래, 자갈, 시멘트, 폐석가루에 재활용 골재를 더 혼합하여 콘크리트를 배합제조하는 것을 특징으로 한다.The present invention is characterized in that by mixing the recycle aggregate to sand, gravel, cement, waste-rock powder to produce a concrete formulation.
또한 본 발명은 모래, 자갈, 시멘트, 폐석가루, 재활용 골재에 강도 증진제인 조강제를 더 혼합하여 콘크리를 배합제조하는 것을 특징으로 한다.In another aspect, the present invention is characterized in that the concrete is mixed with sand, gravel, cement, waste stone powder, recycled aggregates by further mixing the strength enhancer as a strength enhancer.
본 발명에 따른 재활용방법에 의해서 산출된 상기 폐석가루를 사용하여 콘크리트 PC암거, 수로관, 콘크리트 맨홀 등의 콘크리트 제품을 생산할 수 있다.Using the waste-rock powder calculated by the recycling method according to the present invention can produce concrete products such as concrete PC culverts, water pipes, concrete manholes.
본 발명에서 언급하는 폐석가루는 일반적으로 석분이라 칭하는 통상적인 석분의 개념과는 상이하며, 도 1 의 공정도에 도시된 바와 같이 석재가공공장에서 보내진 슬러지에 대하여 1차, 2차, 3차의 침전 및 여과처리를 실시하여 얻은 돌가루로서 기존의 폐석분과 달리 콘크리트 제조에 무익한 토분과 미세한 분말이 없고 여러단계의 처리공정을 통하여 기존의 석분보다 깨끗하고 다입도의 자연석 가루로서 기본형상은 함수비(수분 함수량)에 따라 많은 차이가 있다.Waste stone powder referred to in the present invention is different from the conventional concept of stone powder generally referred to as stone powder, and the first, second and third precipitations for sludge sent from the stone processing plant as shown in the process diagram of FIG. It is a stone powder obtained by filtration treatment. Unlike conventional waste stone powder, it has no soil and fine powder which is useless in concrete production. It is clean and multi-grained natural stone powder through multi-stage treatment process. There are many differences.
원석가공시에 발생되는 슬러지는 물과 함께 침전조로 보내지는데 1차 침전조에서는 굵은 입도의 슬러지가 침전 및 여과되고, 2차 침전조에서는 중간 입도의 슬러지가 침전 및 여과되며, 3차 침전조에서는 미세한 입도의 슬러지가 침전 및 여과된다.The sludge generated during raw stone processing is sent to the sedimentation tank together with water. In the first sedimentation tank, sludge of coarse particle size is precipitated and filtered. Sludge is precipitated and filtered.
표 1은 다수의 침전조에서 침전 및 여과 처리하여 얻은 본 발명의 폐석가루와 콘크리트에 사용되는 시멘트, 자갈, 모래의 특성을 비교한 것이다.Table 1 compares the characteristics of cement, gravel and sand used in the waste-rock powder and concrete of the present invention obtained by sedimentation and filtration in a plurality of sedimentation tanks.
본 발명을 통하여 얻은 폐석가루의 특성을 간략히 살펴보면, 표1 에서와 같이 침전 및 여과처리하여 얻은 폐석가루는 콘크리트의 기존 주성분인 시멘트, 모래, 자갈의 중간 충진제로서 처리공정상 다수의 침전 및 여과처리에 의해 추출된 것으로, 기존의 석분이나 폐재활용 골재들 보다 양질의 소재로 입도의 분포범위가 넓어 시멘트, 모래, 자갈의 기존 입도의 편차범위의 극대화에 따른 콘크리트의 내구성, 즉 치밀성의 부족현상을 본 폐석가루를 사용하여 공극을 채워 개선할 수 있다.Briefly looking at the characteristics of the waste-rock powder obtained through the present invention, as shown in Table 1, the waste-rock powder obtained by the precipitation and filtration treatment as a middle filler of cement, sand, gravel, which is the existing main component of concrete, a number of precipitation and filtration treatment It is extracted by the material, and the distribution range of particle size is wider than that of existing stone powder or waste recycling aggregate, and the concrete's durability, namely lack of compactness, is maximized by maximizing the deviation range of the existing particle size of cement, sand, and gravel. This waste-rock powder can be used to fill voids and improve them.
* 상기 기준은 KS F 2503, KS F 2504 의 잔골재, 굵은 골재의 시험기준* The above standards are the test standards for fine aggregates and coarse aggregates of KS F 2503 and KS F 2504.
표 2 는 콘크리트에 사용되는 자갈과 모래의 대체용 골재로서 본 발명의 폐석가루를 콘크리트 주재료와 배합하여 강도를 측정한 결과를 비교한 표이다. 폐석가루는 콘크리트의 주재료인 모래 및 자갈과 비중이 유사하므로 혼합하여 사용시에 기존 골재와 친화력이 우수하며, 입도의 분포범위가 넓어 치환의 능력이 극대화 된다. 표 2 에서 알수 있는 바와 같이, 모래와 자갈의 대체용 골재로서 폐석가루를 15 ~ 20% 까지 혼합하여 사용하여도 강도 값에는 다소 차이가 있으나, 시멘트의 추가사용과 혼화제의 사용으로 현장요구강도 이상은 충분히 실현될 수 있다.Table 2 is a table comparing the results of measuring the strength by combining the waste-rock powder of the present invention with the concrete main material as a substitute for gravel and sand used in concrete. Waste stone powder has a specific gravity similar to that of sand and gravel, which are the main materials of concrete, so it has excellent affinity with existing aggregates when mixed and used. As can be seen in Table 2, the strength value is slightly different even when the waste stone powder is mixed up to 15 to 20% as an alternative aggregate of sand and gravel. Can be fully realized.
또한, 실험3은 폐석가루 15%, 재활용 골재 15%를 치환하여 사용한 결과를 예시한 것이며, 실험4는 강도 증진제인 조강제를 10% 치환하여 사용한 결과로 고강도의 결과값이 나타남을 알 수 있다. 이 실험4는 조강제를 10% 치환하여 얻은 결과치이나, 보다더 많은량의 조강제를 치환하면 치환량대비 강도상승은 실현되나 제조원가의 상승요인이 발생되어 현장여건에 따라 선택적으로 적용되어야 하며, 표 2 의 실험은 한정된 실험결과가 아니며 기본적인 실험을 예시한 것이고, 재료의 혼합량에 따라 보다더 많은 결과치를 나타낼 수 있는 것이다.In addition, Experiment 3 exemplifies the result of using 15% of waste-rock powder and 15% of recycled aggregate, and Experiment 4 showed the result of high strength as a result of using 10% of the coarse agent, which is a strength enhancer. . This experiment 4 is the result obtained by substituting 10% of the crude steel, but when the larger amount of steel is substituted, the strength increase compared to the replacement amount is realized, but the increase of manufacturing cost occurs and it should be applied selectively according to the site conditions. The experiment of 2 is not a limited experimental result, but illustrates a basic experiment, and more results can be shown depending on the amount of mixing of materials.
* 재활용 골재는 22㎜ 이하의 골재사용* Use recycled aggregate less than 22㎜
상기의 실험결과에 의하면 본 폐석가루는 기존 골재의 대체재로서 사용함에 전혀 손색이 없으며 환경성 검토에 따른 기존의 하천골재나 석산의 채취불허로 인하여 천연골재의 파동이 문제시 되고 있으며 본 산업용 부산물인 폐석가루의 재활용으로 환경개선은 물론이거니와 저비용의 제품공급이 가능하다.According to the above test results, this waste-rock powder has no problem in being used as a substitute for existing aggregates, and the vibration of natural aggregates is a problem due to the inability to collect existing river aggregates or quarries according to environmental review. Recycling of the powder not only improves the environment, but also makes it possible to supply low-cost products.
또한 본 발명은 상기 폐석가루를 건조기에 의해 완전건조 탈수후 정밀분쇄기에 의해서 가공정밀 분쇄하는 처리공정을 더 포함하는 것을 특징으로 한다.In another aspect, the present invention is characterized in that it further comprises a treatment step of processing the fine pulverized by the fine crusher after the complete dry dehydration of the waste stone powder by a dryer.
상기 폐석가루는 건조기에 건조 후 고밀도 파쇄기에 의해 일정규격으로 추가 가공하여 발전소에서 발생되는 슬러지인 플라이에쉬, 제철소에서 발생되는 슬러지인 슬래그 등과 같이 일정 규격의 분말도를 형성하여 기타 시멘트의 혼합제로도 사용이 가능하며, 페인트 안료, 충진제 기타 분말도에 따라 정밀 가공하면 사용범위가 소요처에 따라 광범위하게 사용될 수 있다.The waste-rock powder is further processed to a certain standard by a high-density crusher after drying in a dryer to form a powder of a certain standard, such as the sludge generated from the power plant, slag generated from the steel mill, etc. It can be used, and if it is precisely processed according to paint pigment, filler and other powders, the range of use can be widely used depending on the requirements.
본 발명에 따르면 다수회에 걸쳐서 침전 및 여과의 처리공정에 의해 생성된 약 50 ~ 1500 ㎛ 입자를 가진 폐석가루를 콘크리트에 사용되는 골재의 대체용으로 사용함으로써 콘크리트의 내구성 증진으로 고품질의 콘크리트 제품 및 구조물의 보급이 가능하며, 환경처리업체 조차 활용방안이 없어 도외시 했던 슬러지의 재활용 방법의 개발로 환경문제의 근본적 해결방안에 따른 파급효과가 크며, 기존골재의 채취허가가 환경성검토 등의 문제로 채취량이 없어 골재의 품귀현상은 지속적으로 발생될 소지가 있으므로 그에 따른 대체 원료로서의 사용량이 증대될 것이며, 단순히 콘크리트의 대체재인 골재로 한정하여 사용되는 것이 아니라, 각 소요처별 현황에 따라 충진제 및 안료의 혼합제로 사용이 가능하도록 완전 건조후 정밀 분쇄기에 의해 추가 정밀 가공하여 보급함으로써 환경문제의 해결과 저비용 및 다용도의 제품공급이 가능하다.According to the present invention by using waste stone powder having about 50 ~ 1500 ㎛ particles produced by the process of sedimentation and filtration in a number of times as a substitute for aggregate used in concrete, high-quality concrete products and It is possible to spread the structure, and even the environmental treatment company has developed a sludge recycling method that has been neglected because there is no use method, and the ripple effect is large due to the fundamental solution of the environmental problem. Since there is a possibility that aggregate shortage may occur continuously, the amount of use as an alternative raw material will increase accordingly, and it is not simply used as aggregate which is a substitute of concrete, but it is a mixture of filler and pigment according to each situation. Additional precision by precision grinder after complete drying By processing and distributing, it is possible to solve environmental problems and supply low cost and versatile products.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101040195B1 (en) * | 2009-04-30 | 2011-06-09 | 주식회사 성신에이엘에스 | Automatic opening and closing structure of gallery windows for side walls |
| KR101462105B1 (en) * | 2012-09-24 | 2014-11-19 | 제주대학교 산학협력단 | The dry mortar using basalt stone powder sludge |
| CN113402231A (en) * | 2021-07-15 | 2021-09-17 | 武汉盛大长青建材有限公司 | Method for producing ready-mixed concrete by using stone saw mud |
| KR20220111523A (en) | 2021-02-02 | 2022-08-09 | 주식회사 이노씨에스알 | mortar composition using granite sludge |
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| JPS5235374A (en) * | 1975-09-15 | 1977-03-17 | Daiwa Kikai Seisakusho:Kk | Vacuum dehydrating device of stone powder sludge |
| KR940021125A (en) * | 1993-03-16 | 1994-10-17 | 정도원 | Sand production method |
| KR950023497A (en) * | 1994-01-14 | 1995-08-18 | 이규봉 | Sand manufacturing system |
| KR960000799A (en) * | 1994-06-13 | 1996-01-25 | 김형준 | Manufacturing Method of Construction Materials Using Waste Stone Powder |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS5235374A (en) * | 1975-09-15 | 1977-03-17 | Daiwa Kikai Seisakusho:Kk | Vacuum dehydrating device of stone powder sludge |
| KR940021125A (en) * | 1993-03-16 | 1994-10-17 | 정도원 | Sand production method |
| KR950023497A (en) * | 1994-01-14 | 1995-08-18 | 이규봉 | Sand manufacturing system |
| KR960000799A (en) * | 1994-06-13 | 1996-01-25 | 김형준 | Manufacturing Method of Construction Materials Using Waste Stone Powder |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101040195B1 (en) * | 2009-04-30 | 2011-06-09 | 주식회사 성신에이엘에스 | Automatic opening and closing structure of gallery windows for side walls |
| KR101462105B1 (en) * | 2012-09-24 | 2014-11-19 | 제주대학교 산학협력단 | The dry mortar using basalt stone powder sludge |
| KR20220111523A (en) | 2021-02-02 | 2022-08-09 | 주식회사 이노씨에스알 | mortar composition using granite sludge |
| CN113402231A (en) * | 2021-07-15 | 2021-09-17 | 武汉盛大长青建材有限公司 | Method for producing ready-mixed concrete by using stone saw mud |
| CN113402231B (en) * | 2021-07-15 | 2022-11-18 | 武汉盛大长青建材有限公司 | A method of producing ready-mixed concrete by using stone sawn mud |
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