WO2010101412A2 - Procédé de production d'agrégats artificiels légers à base de boues de laminage à chaud ou à froid - Google Patents

Procédé de production d'agrégats artificiels légers à base de boues de laminage à chaud ou à froid Download PDF

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Publication number
WO2010101412A2
WO2010101412A2 PCT/KR2010/001329 KR2010001329W WO2010101412A2 WO 2010101412 A2 WO2010101412 A2 WO 2010101412A2 KR 2010001329 W KR2010001329 W KR 2010001329W WO 2010101412 A2 WO2010101412 A2 WO 2010101412A2
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WO
WIPO (PCT)
Prior art keywords
sludge
weight
cold
clay
hot
Prior art date
Application number
PCT/KR2010/001329
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English (en)
Korean (ko)
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WO2010101412A3 (fr
Inventor
정영호
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(주)쎄라그린
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Publication date
Application filed by (주)쎄라그린 filed Critical (주)쎄라그린
Priority to AU2010220974A priority Critical patent/AU2010220974A1/en
Priority to CN2010800186655A priority patent/CN102414141A/zh
Priority to CA 2761252 priority patent/CA2761252A1/fr
Publication of WO2010101412A2 publication Critical patent/WO2010101412A2/fr
Publication of WO2010101412A3 publication Critical patent/WO2010101412A3/fr

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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
    • C04B18/02—Agglomerated materials, e.g. artificial aggregates
    • C04B18/027—Lightweight materials
    • 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
    • C04B18/18—Waste materials; Refuse organic
    • 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
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/04—Silica-rich materials; Silicates
    • C04B14/10—Clay
    • 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

Definitions

  • the present invention relates to a method for producing artificial light aggregates mainly comprising cold rolled and hot rolled sludge and clay, and more particularly, cold rolled and hot rolled sludge and clay as a main raw material, and having a dry weight ratio of 0.8 to 1.5. It relates to a manufacturing method of artificial light weight aggregate, characterized in that 5 to 20%.
  • raw materials containing foaming agents such as expanded shale and expanded clay are required.
  • the quality of lightweight aggregate is determined according to the distribution and content of the foaming agent. It is very important. Such raw materials are limited to a few countries even in foreign countries, and there is no domestic situation. Therefore, in order to obtain high-quality lightweight aggregates, light aggregates are manufactured by artificially adding Fe 2 O 3 , C components to existing lightweight aggregate manufacturing raw materials or natural raw materials. However, there are many restrictions on manufacturing lightweight aggregate.
  • steelmaking by-products are classified into slag (blast furnace slag, steelmaking slag), sludge (steelmaking sludge, lime sludge, cold rolled and hot rolled sludge, after-treatment sludge, drainage sludge, playing sludge), dust (sintered R). / EP dust, sintered W / EP dust, lime B / F dust, steelmaking E / P dust, steelmaking B / F dust) and incineration residues.
  • Korean Patent Publication No. 2003-0069692 discloses a lightweight aggregate having an apatite crystal structure using phosphate wastewater sludge, which manufactures lightweight aggregate by adding 5 to 15 wt% of steel sludge containing about 60% of iron as a blowing agent.
  • the production method of is disclosed, when the addition amount of the steel sludge exceeds 15% by weight, there is a problem that there is a significant restriction on the amount of recycling because the black color of the resultant product is strengthened to reduce the commerciality.
  • Korean Patent No. 662,812 proposes a method of manufacturing artificial ultra-light aggregates by mixing 20-30 parts by weight of dry steel sludge in a dry state.
  • the main reason for manufacturing artificial lightweight aggregate in this way is that the moisture content of raw sewage sludge is about 80%, so it is impossible to mold, so to solve this problem by mixing dry steel sludge dried to about 20 ⁇ 30% moisture content It is to reduce the drying cost by enabling the molding of lightweight aggregate.
  • the general concept of foaming of lightweight aggregate is that when the lightweight aggregate is fired, thermal desorption of organic substances occurs, and the gas and carbonic acid, sulfur dioxide and trivalent iron oxides generated by desorption of organic substances are reduced to divalent iron oxide.
  • the outer shell of the plastic is fired, if the gas cannot penetrate out of the plastic surface, the interior of the clay is swollen and has a more or less homogeneous porosity, thereby making it lighter.
  • the manufacturing of artificial light aggregate using the combination of raw sewage sludge and dry steel sludge disclosed in the above-mentioned literature goes through a similar process, but more than 90% of the organic material possessed by the raw sewage sludge forms many aeration holes during the firing process. It is difficult to reduce the reaction of Fe 2 O 3 , and the control of the firing process such as excessively calcined or melted and adhered to the surface of the lightweight aggregate before foaming has a very difficult problem. It is difficult to secure quality uniformity.
  • the present invention is to provide an artificial lightweight aggregate and a method for manufacturing the artificial lightweight aggregate prepared by mixing cold rolled and hot rolled sludge and clay in a constant ratio in order to recycle steelmaking by-products containing impurities such as oil components difficult to recycle. .
  • the present invention is prepared with cold and hot rolled sludge and clay as the main raw material, provides an artificial light weight aggregate, characterized in that the dry weight ratio is 0.8 ⁇ 1.5, the absorption rate is 5 to 20%.
  • the present invention also comprises the steps of (a) mixing 5 to 90 parts by weight of cold rolled and hot rolled sludge and 10 to 120 parts by weight of clay; (b) molding the mixture; (c) drying the molded body; And (d) it comprises a step of firing the dried body, provides a manufacturing method of artificial lightweight aggregate, the dry weight ratio is 0.8 ⁇ 1.5, the absorption rate of 5 to 20%.
  • Figure 1 shows the manufacturing process of the artificial light weight aggregate according to the present invention.
  • the present invention relates to an artificial light weight aggregate, which is manufactured at a consistent point with cold rolled and hot rolled sludge and clay as main raw materials, has a dry weight ratio of 0.8 to 1.5, and an absorption rate of 5 to 20%.
  • the present invention in another aspect, (a) mixing 5 to 90 parts by weight of cold rolled and hot rolled sludge and 10 to 120 parts by weight of clay; (b) molding the mixture; (c) drying the molded body; And (d) comprising a step of firing the dried body, the specific gravity of the construction is 0.8 to 1.5, and relates to a method for producing artificial lightweight aggregate of 5 to 20% water absorption (Fig. 1).
  • cold rolled and hot rolled sludge means sludge containing a large amount of heavy metals generated in the cold rolled and hot rolled processes of the steel manufacturing plant.
  • the artificial lightweight aggregate according to the present invention uses steel waste such as cold rolled and hot rolled sludge as a raw material of artificial lightweight aggregate, and the chemical components such as Fe 2 O 3 and C contained in a large amount in cold rolled and hot rolled sludge are as follows. Since it becomes a key component that plays a role of foaming during the firing of lightweight aggregate through the reaction, no separate blowing agent is required.
  • the problem of securing raw materials that could not be manufactured due to the lack of foaming components in the past was solved, and at the same time, the lightweight aggregates were manufactured by using the steel waste being buried and used as raw materials for high value-added construction materials. As a result, it also contributes significantly to the reduction of environmental pollutants.
  • the artificial light weight aggregate is manufactured by mixing 5 to 90 parts by weight of cold rolled and hot rolled sludge and 10 to 120 parts by weight of clay, and then manufactured through a firing process in an electric furnace at 1100 to 1200 ° C.
  • the aggregate had a dry weight of 1.0-1.5 and an absorption rate of 5-10%.
  • the artificial light weight aggregate is 5 to 90 parts by weight of cold rolled and hot rolled sludge and 10 to 120 parts by weight of clay, after primary molding with an extrusion molding machine, after cutting the molded body and secondary molding, 950-1100 Manufactured through a rotary kiln firing process of °C, the artificial lightweight aggregate showed a dry weight ratio of 0.8 ⁇ 1.5 and the absorption rate of 12 to 20%, heavy metals were not detected as a result of the measurement of the amount of harmful substances released.
  • Light weight aggregates having various specific gravity can be used not only for structural materials in construction and civil engineering but also for sound absorbing materials for noise reduction in buildings, humidity control and horticulture for buildings, and thus have wide application fields.
  • Example 2 Preparation of lightweight aggregate using cold rolled and hot rolled sludge
  • Experimental Example 1 10 parts by weight of cold rolled and hot rolled sludge were mixed and 90 parts by weight of clay, and then the raw materials which had been pulverized and kneaded were molded into a ring shape by hand.
  • the firing process of this test example was carried out in an electric furnace of about 1150 °C.
  • the dry weight of the lightweight aggregate prepared according to the present experimental example was 1.48, and the water absorption was 9.48%.
  • Experimental Example 2 by mixing 20 parts by weight of cold rolled and hot rolled sludge, 80 parts by weight of clay to prepare a molded body in the same manner as in Experiment 1.
  • the firing process of this test example was carried out in an electric furnace of about 1150 °C.
  • the dry weight of the lightweight aggregate prepared according to this test example was 1.40, and the water absorption was 8.64%.
  • Experimental Example 3 was prepared by the same method as Experimental Example 1 by mixing 30 parts by weight of cold rolled and hot rolled sludge, 70 parts by weight of clay. The firing process of this test example was carried out in an electric furnace of about 1150 °C. The dry weight of the lightweight aggregate prepared according to the present experiment was 1.46, and the absorption was 9.05%.
  • Experimental Example 4 was prepared by the same method as Experimental Example 1 by mixing 40 parts by weight of cold rolled and hot rolled sludge, 60 parts by weight of clay. The firing process of this test example was carried out in an electric furnace of about 1150 °C. The dry weight of the lightweight aggregate prepared according to this test example was 1.08, and the water absorption was 9.59%.
  • Experimental Example 5 50 parts by weight of cold rolled and hot rolled sludge were mixed and 50 parts by weight of clay to prepare a molded body in the same manner as in Experimental Example 1.
  • the firing process of this test example was carried out in an electric furnace of about 1150 °C.
  • the dry weight of the lightweight aggregate prepared according to this example was 1.16, and the water absorption was 7.44%.
  • Experimental Example 6 was mixed with 60 parts by weight of cold rolled and hot rolled sludge, 40 parts by weight of clay to prepare a molded body in the same manner as in Experiment 1.
  • the firing process of this test example was carried out in an electric furnace of about 1150 °C.
  • the dry weight of the lightweight aggregate prepared according to this test example was 1.23, and the water absorption was 4.48%.
  • Experimental Example 7 was prepared by the same method as Experimental Example 1 by mixing 70 parts by weight of cold rolled and hot rolled sludge, 30 parts by weight of clay. The firing process of this test example was carried out in an electric furnace of about 1150 °C. The dry weight of the lightweight aggregate prepared according to this test example was 1.11 and the water absorption was 5.79%.
  • Table 2 shows the dry weight and absorption ratio of the light weight aggregate prepared according to Experimental Examples 1 to 7.
  • Experimental Example 9 was prepared according to the method of Experimental Example 8 after mixing 40 parts by weight of cold rolled and hot rolled sludge and 60 parts by weight of clay. After drying the molded body, a firing process was performed in a rotary kiln at about 1000 ° C. The dry weight of the manufactured lightweight aggregate was 1.29, and the water absorption was 15.76%.
  • Experimental Example 10 was prepared according to the method of Experimental Example 8, after mixing 50 parts by weight of cold rolled and hot rolled sludge, 50 parts by weight of clay. After drying the molded body, a firing process was performed in a rotary kiln at about 1000 ° C. The dry weight of the manufactured lightweight aggregate was 0.90, and the water absorption was 19.80%.
  • Table 3 shows the specific gravity and absorption rate of the light weight aggregate prepared according to Experimental Example 8 to 10.
  • the physical properties of the lightweight aggregate prepared in the above experimental example showed that the specific gravity is 1.5 or less.
  • the specific gravity was considerably low as 0.90, which is not only general lightweight structural aggregate, but also possible to manufacture ultralight aggregate that can be used for non-structural use.
  • the leaching amount of harmful substances in the lightweight aggregate prepared according to Experimental Example 10 was measured by the waste process test method, and heavy metals were not detected as shown in Table 4 below.
  • Example 4 Concrete compressive strength measurement using lightweight aggregate including cold rolled and hot rolled sludge
  • Compressive strength was measured after producing concrete using lightweight aggregate prepared according to the present invention.
  • Preparation Example 1 of Table 5 is a concrete produced using the lightweight aggregate of Experimental Example 9, which was prepared according to KS F 2403 (method for preparing concrete strength test specimen) and cured, and then cured with KS F 2405 (concrete compression). 28 days compressive strength was measured according to the test method).
  • Comparative Example 1 in Table 5 was used to compare the Preparation Example 1 with the general crushed stone aggregate (aggregate aggregate of Chungnam Gwangcheon material) used in the existing concrete, the concrete manufacturing method and the compressive strength test method is It was done in the same way.
  • artificial lightweight aggregate prepared according to the method of the present invention is easy to reduce the reaction of Fe 2 O 3 by using the cold and hot rolled sludge containing a large amount of Fe 2 O 3 , C component as a blowing agent as a main raw material It is easy to control the foaming process during firing, so there is no need for a separate blowing agent, and the average firing temperature is 1000 °C, which is about 100 ⁇ 200 °C lower than the existing firing temperature. By using more than 50% as a major raw material of the company, the recycling rate can be dramatically increased.
  • the artificial lightweight aggregate according to the present invention is manufactured by using artificial cold aggregate by using cold rolled and hot rolled sludge which are by-products of the steel industry as a main raw material. It has the effect of solving the environmental pollution problem by reducing.

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

Abstract

La présente invention concerne un procédé production d'agrégats artificiels légers à base principalement des boues de laminage à froid ou à chaud et d'argile. L'invention concerne plus particulièrement un procédé permettant de produire, à partir de boues de laminage à froid ou à chaud et d'argile, des agrégats artificiels légers dont la gravité spécifique absolue à sec va de 0,5 à 1,5, et l'absorbance va de 5% à 20%. Étant donné, d'une part que les agrégats artificiels légers selon la présente invention sont fabriqués essentiellement à partir de boues de laminage à froid ou à chaud qui sont un sous produit de l'industrie sidérurgique, il n'y a pas lieu d'ajouter d'agent moussant, et étant donné d'autre part qu'on réutilise des déchets d'acier pour augmenter les avantages économiques, l'invention permet de réduire la production de déchets tout en évitant la contamination de l'environnement.
PCT/KR2010/001329 2009-03-03 2010-03-03 Procédé de production d'agrégats artificiels légers à base de boues de laminage à chaud ou à froid WO2010101412A2 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU2010220974A AU2010220974A1 (en) 2009-03-03 2010-03-03 Method for producing artificial lightweight aggregates using cold- or hot-rolled mill sludge
CN2010800186655A CN102414141A (zh) 2009-03-03 2010-03-03 使用冷轧和热轧机污泥生产人工轻骨料的方法
CA 2761252 CA2761252A1 (fr) 2009-03-03 2010-03-03 Procede de production d'agregats artificiels legers a base de boues de laminage a chaud ou a froid

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20090018020A KR101165395B1 (ko) 2009-03-03 2009-03-03 냉연 및 열연 슬러지를 이용한 인공경량골재의 제조방법
KR10-2009-0018020 2009-03-03

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WO2010101412A2 true WO2010101412A2 (fr) 2010-09-10
WO2010101412A3 WO2010101412A3 (fr) 2010-11-25

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KR (1) KR101165395B1 (fr)
CN (1) CN102414141A (fr)
AU (1) AU2010220974A1 (fr)
CA (1) CA2761252A1 (fr)
WO (1) WO2010101412A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108863426A (zh) * 2018-07-10 2018-11-23 黄河三角洲京博化工研究院有限公司 一种含冷轧油泥的超轻质陶粒及其制备方法
KR102363677B1 (ko) 2020-12-24 2022-02-15 한갑수 점토와 실리카를 이용한 경량골재 및 이의 제조방법
KR20240138028A (ko) 2023-03-09 2024-09-20 권만수 보크사이트 잔사물을 이용한 황산제일철의 제조방법 및 제조장치

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0188371A2 (fr) * 1985-01-14 1986-07-23 Ube Industries, Ltd. Agrégat artificiel léger
JPH08183639A (ja) * 1994-12-27 1996-07-16 Tetsuo Nakamura 人工軽量骨材およびその製造方法
KR20030011757A (ko) * 2002-12-28 2003-02-11 이기강 경량 골재용 조성물의 제조방법
KR20050021036A (ko) * 2003-08-25 2005-03-07 대한민국(전북대학교 총장) 도시/산업 쓰레기 소각재를 이용한 경량골재 제조방법

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1109850A (zh) * 1995-01-25 1995-10-11 北京市环境卫生科学研究所 生产垃圾陶粒和污泥陶粒的方法
CN1171829C (zh) * 2002-03-07 2004-10-20 华南理工大学 一种利用污水处理厂生物污泥烧制粘土陶粒的方法
KR200423178Y1 (ko) 2006-05-16 2006-08-03 하용진 점토와 폐기물 혼합체의 인공골재 제조설비

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0188371A2 (fr) * 1985-01-14 1986-07-23 Ube Industries, Ltd. Agrégat artificiel léger
JPH08183639A (ja) * 1994-12-27 1996-07-16 Tetsuo Nakamura 人工軽量骨材およびその製造方法
KR20030011757A (ko) * 2002-12-28 2003-02-11 이기강 경량 골재용 조성물의 제조방법
KR20050021036A (ko) * 2003-08-25 2005-03-07 대한민국(전북대학교 총장) 도시/산업 쓰레기 소각재를 이용한 경량골재 제조방법

Also Published As

Publication number Publication date
WO2010101412A3 (fr) 2010-11-25
AU2010220974A1 (en) 2011-11-17
CA2761252A1 (fr) 2010-09-10
KR101165395B1 (ko) 2012-07-12
KR20100099494A (ko) 2010-09-13
CN102414141A (zh) 2012-04-11

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