KR100406772B1 - A lightweight aggregate using clay - Google Patents

A lightweight aggregate using clay Download PDF

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KR100406772B1
KR100406772B1 KR10-2000-0024930A KR20000024930A KR100406772B1 KR 100406772 B1 KR100406772 B1 KR 100406772B1 KR 20000024930 A KR20000024930 A KR 20000024930A KR 100406772 B1 KR100406772 B1 KR 100406772B1
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clay
lightweight aggregate
weight
component
sio
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KR10-2000-0024930A
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KR20010103412A (en
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이영태
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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
    • C04B33/00—Clay-wares
    • C04B33/02—Preparing or treating the raw materials individually or as batches
    • C04B33/04—Clay; Kaolin
    • 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
    • C04B33/138—Waste materials; Refuse; Residues from metallurgical processes, e.g. slag, furnace dust, galvanic waste
    • 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
    • C04B33/32—Burning methods
    • 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

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

Abstract

본 발명은 점토를 이용한 경량골재에 관한 것으로서, 특히 점토에 산화철(Fe2O3)의 함량을 높여 저온에서 소성하므로써 폐기물을 사용하여 원료조달에 제한이 없고, 연료를 절감하며, 원적외선 효과도 얻을 수 있는 경량골재에 관한 것이다.The present invention relates to lightweight aggregate using clay, and in particular, by increasing the content of iron oxide (Fe 2 O 3 ) in clay and baking at low temperature, there is no restriction on raw material procurement using waste, saving fuel, and obtaining far infrared effect. It relates to a lightweight aggregate that can.

Description

점토를 이용한 경량골재{A lightweight aggregate using clay}A lightweight aggregate using clay

본 발명은 점토를 이용한 경량골재에 관한 것으로서, 특히 점토에 산화철(Fe2O3)의 함량을 높여 저온에서 소성하므로써 폐기물을 사용하여 원료조달에 제한이 없고, 연료를 절감하며, 원적외선 효과도 얻을 수 있는 경량골재에 관한 것이다.The present invention relates to lightweight aggregate using clay, and in particular, by increasing the content of iron oxide (Fe 2 O 3 ) in clay and baking at low temperature, there is no restriction on raw material procurement using waste, saving fuel, and obtaining far infrared effect. It relates to a lightweight aggregate that can.

종래부터 경량골재를 제조하기 위한 방법은 다음과 같이 여러가지로 제안되어 왔다.Conventionally, a method for manufacturing lightweight aggregate has been proposed in various ways as follows.

특허공고번호 제68-300호에 의하면, 시멘트에 금속발포제와 폴리초산비닐과 아크릴산에스테르 공중합체의 겔화제를 혼련하여 성형하는 것이 기재되어 있으나, 이와 같이 제조된 기포 콘크리트는 비중이 약 1.2정도로 무겁고 재료 소요량도 많으며 고가이고 균열이 생기는 결점도 있었다.Patent Publication No. 68-300 describes that a cement is kneaded with a metal foaming agent, and a gelling agent of a polyvinyl acetate and an acrylic acid ester copolymer. However, the foamed concrete prepared in this way has a specific gravity of about 1.2 and is heavy. Material requirements are high and expensive and cracks are also present.

또한 일본국 특허공보소 제43-16553호에 의하면, 불팽창성 광물원료를 무수규산 50∼80%, 알루미나 10∼15%의 범위가 되도록 혼합조정하여 약 800∼1000℃로 가소하여 일단 냉각한 뒤 이를 미립으로 분쇄한 것에 환원성이 풍부한 탄소가루를소량 혼화하여 조립하고 이 조립물을 1000∼1300℃의 고온으로 소성하여 경량골재를 제조하는 것이 알려져 있으나, 이와 같이 하여 만들어지는 경량골재의 비중은 약 1.4로 본 발명에 따라 제조되는 경량골재의 비중에 비해 무거울 뿐만 아니라 열전도율이 높고 또한 압축강도가 떨어지는 결점을 피할 수가 없다.In addition, according to Japanese Patent Publication No. 43-16553, after mixing and adjusting the non-expandable mineral raw material to be in the range of 50 to 80% of anhydrous silicic acid and 10 to 15% of alumina, it is calcined to about 800 to 1000 ° C and cooled once. It is known to produce lightweight aggregates by mixing small amounts of carbon powder rich in reducing properties into finely ground pulverized granules and firing the granulated materials at a high temperature of 1000 to 1300 ° C., but the specific gravity of lightweight aggregates produced in this way is about 1.4 is not only heavy compared to the specific gravity of the lightweight aggregate produced in accordance with the present invention, it is inevitable that the defects of high thermal conductivity and low compressive strength.

특허공고번호 제90-5974호에 의하면, SiO264.0∼72.96%를 갖는 점토에 A12O315.0∼16.95%, Fe2O35.0∼7.5%, CaO 0.4∼0.59%, MgO 0.41%, Igloss 6.78%, 중유 1.5%를 혼합하여 1150∼1200℃에서 약 2분간 소성하여 튀겨낸뒤 800∼900℃로 냉각하고 이를 다시 1150∼1200℃로 3∼5분간 로타리 킬른에서 2차 소성시켜 압축강도가 45kg/cm2이상으로 되고, 열전도율이 0.06 이하, 흡음율(방음효과)이 0.07dB 이하, 비중이 0.28∼0.4 이내로 되는 방수, 내진성 제품에 관한 기술이 개시되어 있으나 SiO2의 함량이 일정비율 범위인 점토를 사용해야 하므로 원료조달에 한계가 있고, 기타 다양한 부재료를 혼입해야 하며 비교적 높은 온도에서 2회에 걸쳐 소성을 해야 하는 문제점 등이 있어 실용화되지 못하였다.According to Patent Publication No. 90-5974, A1 2 O 3 15.0 to 16.95%, Fe 2 O 3 5.0 to 7.5%, CaO 0.4 to 0.59%, MgO 0.41%, Igloss on clay having 64.0 to 72.96% SiO 2 6.78%, heavy oil 1.5% is mixed and calcined at 1150 ~ 1200 ℃ for about 2 minutes, then fried and cooled to 800 ~ 900 ℃ and then calcined at 1150 ~ 1200 ℃ for 2 ~ 5 minutes in a rotary kiln for 45kg of compressive strength. / cm 2 and as described above, the thermal conductivity is 0.06 or less, heupeumyul (soundproof) is 0.07dB below, specific gravity is the waterproof, shockproof description of the disclosed products is within 0.28 to 0.4, but the content of SiO 2 ranges a percentage clay Because it must be used, there is a limit in the procurement of raw materials, and various other subsidiary materials must be mixed, and there are problems such as two times firing at a relatively high temperature.

특허공보 제96-11358호에 의하면, 약 51.5%가량의 산화규소(SiO2)가 함유된 점토에 산화알루미늄(Al2O3) 31.83%, 산화티타늄 2.69%, 산화칼슘(CaO) 3.76%, 산화마그네슘(MgO) 8.15%, 산화칼륨(K2O) 0.48%, 산화망간(MnO) 0.96%, 산화인(P2O5) 0.65%의 부재료를 공급기를 통해서 혼합기로 공급한 후 혼합기에서 혼합된 재료에 물탱크를 통해서 물과 벙커씨유를 도입하여 스크류 콘베어로서 반죽을 하고 반죽된재료를 터브레이터로서 1∼3㎝의 크기로 선별한 후 선별된 재료를 콘베어로서 일측에 연돌이 형성되고 내부온도가 1150∼1200℃의 온도를 가지는 로터리 킬른내로 투입시켜 5분간 걸쳐 통과되도록 하여 로터리 킬른을 통과시 성형된 중간재가 폭발되어 입자가 100∼200% 평윤시켜 압축강도가 100kg/cm2이상이며 열전도율이 0.3 이하이고 흡음율이 50dB 이상(1250Hz일때 손실율)이며, 비중이 0.4∼0.7 이내의 특성을 가지는 제품을 얻는 기술이 개시되어 있으나, 51.5% 가량의 SiO2가 함유된 점토를 사용해야 하므로써 원료조달에 한계가 있고, 기타 고가의 산화티탄 등 수많은 부재를 첨가해야 하는 문제점이 있으며, 비교적 높은 1150∼1200℃에서 가열해야 하므로써 생산비가 높은 문제점 등이 있어 이 역시 실용화되지 못하였다.According to Patent Publication No. 96-11358, 31.83% of aluminum oxide (Al 2 O 3 ), 2.69% of titanium oxide, 3.76% of calcium oxide (CaO) in clay containing about 51.5% of silicon oxide (SiO 2 ), Magnesium Oxide (MgO) 8.15%, Potassium Oxide (K 2 O) 0.48%, Manganese Oxide (MnO) 0.96%, Phosphorus Oxide (P 2 O 5 ) 0.65% Water and bunker seed oil are introduced into the prepared material through a water tank to knead it as a screw conveyor, and the kneaded material is sorted to a size of 1 to 3 cm using a tubator, and a stack is formed on one side as a conveyor. The internal temperature is introduced into a rotary kiln having a temperature of 1150 to 1200 ° C. and passed through for 5 minutes. When passing through the rotary kiln, the molded intermediate material is exploded and the particles are flattened to 100 to 200% to provide a compressive strength of 100 kg / cm 2 or more. Thermal conductivity is 0.3 or less and sound absorption is 50 dB or more (loss ratio at 1250 Hz) It said, the specific gravity, but discloses a technique of obtaining products having the characteristics of within 0.4 to 0.7, 51.5% threshold in raw material procurement By use of clay with a SiO 2 content of approximately, and a number of other members such as an expensive titanium oxide There is a problem to be added, there is a problem such as high production cost by heating at a relatively high 1150 ~ 1200 ℃ it was also not practical.

본 발명의 목적은 상기와 같은 선행기술의 문제점을 개선하기 위한 것으로서, 국내에 산재되어 있는 점토를 주재로 하고 제철소의 폐기물을 사용하므로써 원료의 조달에 제한을 받지 않고, 저온에서 소성시키므로서 연료를 절감하며, 점토에서 기인되는 원적외선 효과를 얻을 수 있는 점토를 이용한 경량골재를 제공하는 것이다.An object of the present invention is to improve the problems of the prior art as described above, and is based on clay scattered throughout the country, by using the waste of steel mills without being limited to the procurement of raw materials, by burning the fuel at a low temperature To reduce, and to provide a lightweight aggregate using clay that can obtain the far infrared effect caused by the clay.

본 발명은 점토를 이용한 경량골재에 관한 것으로서, 전답의 지하층을 이루고 있는 점토를 주성분으로 하여 이에 Fe2O3성분이 10중량% 이상이 되도록 추가하고, 발포제인 중유 0.5∼1.0중량%와 물로 반죽성형한 다음 1,050℃∼1,100℃의 낮은 소성온도에서, 5∼10분동안 소성하여, 압축강도가 60kg/cm2이상, 비중이 0.28∼1.0, 흡수율이 10% 이하인 경량골재에 관한 것이다.The present invention relates to a lightweight aggregate using clay, which is added to the Fe 2 O 3 component to be more than 10% by weight, the clay constituting the basement layer of the previous answer, and kneaded with 0.5 to 1.0% by weight heavy oil as a foaming agent After molding, it is fired at a low firing temperature of 1,050 ° C to 1,100 ° C for 5 to 10 minutes to provide a lightweight aggregate having a compressive strength of 60 kg / cm 2 or more, a specific gravity of 0.28 to 1.0, and an absorption rate of 10% or less.

이는 점토에는 비교적 Fe2O3가 많은데 이에 Fe2O3의 총함량이 약 10중량% 이상이 되도록 추가하므로써 Fe2O3가 경량골재의 표면으로 쉽게 이동되어 표면막을 형성하므로써 표면강도를 증가시키고 팽창가스의 외부유출을 막아 발포율을 증대시키고 아울러 내부독립 기포를 형성시켜 결과적으로 흡수성이 없는 경량골재가 만들어지는 것이다.This is relatively high in Fe 2 O 3 clay, so that the total content of Fe 2 O 3 is about 10% by weight or more, Fe 2 O 3 is easily moved to the surface of the lightweight aggregate to form a surface film to increase the surface strength It prevents the outflow of the expansion gas to increase the foaming rate and to form internal independent bubbles, resulting in a lightweight aggregate having no absorbency.

본 발명에서는 Fe2O3성분이 추가된 점토에 SiO2성분이 높은 보명토 또는 규사를 SiO2성분이 70중량% 이상으로 되도록 더 추가하여 압축강도를 높일 수 있고, 또한 애쉬(Ash) 성분을 3중량% 더 추가하므로써 경량화를 도모할 수도 있다.In the present invention, it is possible to increase the compressive strength by further adding to the clay to which the Fe 2 O 3 component is added to the clay or silica sand having a high SiO 2 component so that the SiO 2 component is 70% by weight or more, and also the ash component By adding 3% by weight, the weight can be reduced.

본 발명은 하기 실시예에 의하여 보다 구체적으로 이해될 수 있다. 하기 실시예는 본 발명을 예시하기 위한 것에 지나지 않으며 본 발명의 보호범위를 제한하고자 하는 것은 아니다.The invention can be understood in more detail by the following examples. The following examples are only intended to illustrate the invention and are not intended to limit the protection scope of the invention.

실시예 1Example 1

점토에서 점토질만을 선별한 다음 Fe2O3의 성분이 약 10중량%이상이 되도록 포항제철소의 폐기물인 Fe2O3분말을 추가하여 0.7중량%의 중유와 물로 반죽성형한 다음 로타리 킬른에서 예열하고, 1,070℃에서 약 5분간 소성, 냉각하여 비중이0.28, 압축강도가 65kg/cm2, 흡수율이 5%인 경량골재를 얻었다.A select only clay in the clay, and then Fe 2 O 3 component is about 10% or more is that in addition to the waste of Fe 2 O 3 powder of Pohang molding of 0.7% by weight of heavy oil and water, kneading the following and preheated in rotary kiln , Calcined and cooled at 1,070 ° C for about 5 minutes to obtain lightweight aggregate with specific gravity of 0.28, compressive strength of 65kg / cm 2 and absorption of 5%.

실시예 2Example 2

실시예 1에 추가로 SiO2성분이 약 70% 이상이 되도록 규사를 첨가하여 실시예 1과 같은 방법으로 실시하여 비중이 0.53, 압축강도가 75kg/cm2, 흡수율이 6%인 경량골재를 얻었다.In addition to Example 1, silica sand was added so that the SiO 2 component was about 70% or more, and the same procedure as in Example 1 was carried out to obtain a light weight aggregate having a specific gravity of 0.53, a compressive strength of 75 kg / cm 2 , and a water absorption of 6%. .

실시예 3Example 3

실시예 2에 추가로 제지회사에서 폐기되는 애쉬를 약 3중량% 첨가하여 실시예 2와 같은 방법으로 실시하여 비중이 1.0, 압축강도가 75kg/cm2, 흡수율이 5%인 경량골재를 얻었다.In addition to Example 2 was added to the ash discarded from the paper company about 3% by weight was carried out in the same manner as in Example 2 to obtain a lightweight aggregate having a specific gravity of 1.0, compressive strength of 75kg / cm 2 , absorption rate of 5%.

이상에서 볼 수 있는 바와 같이, 본 발명에 의해 제조된 경량골재는 점토를 주재로 사용하고 제철소의 폐기물을 사용하므로써 원료의 조달에 제한을 받지 않고, 특히 Fe2O3의 함량을 증대시키므로써 점토의 융점이 낮아지고 표면에 견고한 산화철막을 형성하게 되므로써 연료를 절감할 수 있고, 점토를 주재로 하기 때문에 사용용도에 따라 이에서 발산하는 원적외선 효과를 얻을 수도 있다.As can be seen from the above, the lightweight aggregate manufactured according to the present invention is not limited to the procurement of raw materials by using clay as the main material and waste of steel mill, and in particular, by increasing the content of Fe 2 O 3 By lowering the melting point and forming a solid iron oxide film on the surface, fuel can be saved, and since the clay is mainly used, the far-infrared effect emitted from this can be obtained according to the intended use.

Claims (3)

점토를 주재로 하여 Fe2O3의 성분이 10중량% 이상이 되도록 Fe2O3성분을첨가하고, SiO2성분이 70중량% 이상이 되도록 보명토 또는 규사를 첨가한 후, 이를 0.5∼1.0%의 중유와 물로 반죽성형한 다음, 1,050℃∼1,100℃에서 5∼10분동안 소성하여 제조되는 것을 특징으로 하는 점토를 이용한 경량골재.The Fe 2 O 3 component is added so that the component of Fe 2 O 3 is 10% by weight or more based on clay, and after adding bovine earth or silica sand so that the SiO 2 component is 70% by weight or more, 0.5 to 1.0 Light weight aggregate using clay, characterized in that the dough is molded with heavy oil and water of%, and then calcined for 5 to 10 minutes at 1,050 ℃ to 1,100 ℃. 삭제delete 제 1항에 있어서, 점토에 애쉬를 3중량% 더 첨가한 것을 특징으로 하는 점토를 이용한 경량골재.The lightweight aggregate using clay according to claim 1, wherein 3% by weight of ash is added to the clay.
KR10-2000-0024930A 2000-05-10 2000-05-10 A lightweight aggregate using clay KR100406772B1 (en)

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Cited By (2)

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Publication number Priority date Publication date Assignee Title
KR100921649B1 (en) * 2007-12-21 2009-10-14 경기대학교 산학협력단 Method for Manufacturing Artificial Aggregate Having Lightweight and Optimized Blackcore Formation
KR100969951B1 (en) * 2010-01-25 2010-07-15 제이에스세라믹 주식회사 Clay bricks using stone sludge and its manufacturing method thereof

Families Citing this family (3)

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Publication number Priority date Publication date Assignee Title
KR100812670B1 (en) * 2006-12-19 2008-03-13 최양석 Light weight aggregate material and production thereof
KR102363677B1 (en) * 2020-12-24 2022-02-15 한갑수 The light weight aggregate and the manufacturing method thereof using clay and silica
KR102535650B1 (en) * 2022-09-19 2023-05-26 주식회사 케이비씨 Noise reduction type concrete panel

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KR900005974A (en) * 1988-10-06 1990-05-07 원본미기재 Sexual Dysfunction in Men
KR980001915A (en) * 1996-06-13 1998-03-30 유병황 Light aggregate aggregate manufacturing method and device using incineration waste
KR19980046659A (en) * 1996-12-13 1998-09-15 정종순 Manufacturing method of artificial lightweight aggregate for concrete structure

Patent Citations (3)

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KR900005974A (en) * 1988-10-06 1990-05-07 원본미기재 Sexual Dysfunction in Men
KR980001915A (en) * 1996-06-13 1998-03-30 유병황 Light aggregate aggregate manufacturing method and device using incineration waste
KR19980046659A (en) * 1996-12-13 1998-09-15 정종순 Manufacturing method of artificial lightweight aggregate for concrete structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100921649B1 (en) * 2007-12-21 2009-10-14 경기대학교 산학협력단 Method for Manufacturing Artificial Aggregate Having Lightweight and Optimized Blackcore Formation
KR100969951B1 (en) * 2010-01-25 2010-07-15 제이에스세라믹 주식회사 Clay bricks using stone sludge and its manufacturing method thereof

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