KR102231671B1 - Method for manufacturing structure using waste molten slag and structure manufactured by the method - Google Patents

Method for manufacturing structure using waste molten slag and structure manufactured by the method Download PDF

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KR102231671B1
KR102231671B1 KR1020190092724A KR20190092724A KR102231671B1 KR 102231671 B1 KR102231671 B1 KR 102231671B1 KR 1020190092724 A KR1020190092724 A KR 1020190092724A KR 20190092724 A KR20190092724 A KR 20190092724A KR 102231671 B1 KR102231671 B1 KR 102231671B1
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조성수
이철
박영수
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고등기술연구원연구조합
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00Use 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
    • C04B18/04Waste materials; Refuse
    • C04B18/14Waste materials; Refuse from metallurgical processes
    • C04B18/141Slags
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B14/00Use 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
    • C04B14/02Granular materials, e.g. microballoons
    • C04B14/26Carbonates
    • C04B14/28Carbonates of calcium
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00Use 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
    • C04B18/04Waste materials; Refuse
    • C04B18/16Waste materials; Refuse from building or ceramic industry
    • C04B18/165Ceramic waste
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    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B22/00Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
    • C04B22/06Oxides, Hydroxides
    • C04B22/062Oxides, Hydroxides of the alkali or alkaline-earth metals
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    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
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    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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    • C04B38/00Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/10Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by using foaming agents or by using mechanical means, e.g. adding preformed foam
    • C04B38/103Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by using foaming agents or by using mechanical means, e.g. adding preformed foam the foaming being obtained by the introduction of a gas other than untreated air, e.g. nitrogen
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    • C04B5/00Treatment of  metallurgical  slag ; Artificial stone from molten  metallurgical  slag 
    • C04B5/06Ingredients, other than water, added to the molten slag or to the granulating medium or before remelting; Treatment with gases or gas generating compounds, e.g. to obtain porous slag
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

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  • Civil Engineering (AREA)
  • Inorganic Chemistry (AREA)
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Abstract

본 발명은 폐기물 용융슬래그를 이용한 구조체의 제조방법 및 그에 의해 제조된 구조체에 관한 것이다. 본 발명의 일 실시예에 따른 폐기물 용융슬래그를 이용한 구조체의 제조방법은, 폐기물의 용융슬래그를 분쇄하여 분말을 생성하는 단계; 상기 용융슬래그 분말 생성단계에서 생성된 용융슬래그 분말에, 폐유리분말 또는 시멘트, 및 첨가제를 혼합하는 단계; 및 상기 혼합 단계에서 형성된 혼합물을 소정 온도까지 승온하여 건조 및 소성하는 단계를 포함하며, 상기 건조 및 소성 단계에 있어서, 상기 혼합물이 고온에서 결합되거나 상이 변하는 과정에서 이산화탄소가 발생하고, 발생된 이산화탄소로 인해 기포가 형성되어 발포 구조체가 형성될 수 있다.The present invention relates to a method of manufacturing a structure using waste molten slag and a structure manufactured thereby. A method of manufacturing a structure using waste molten slag according to an embodiment of the present invention comprises the steps of: pulverizing molten slag of waste to generate powder; Mixing waste glass powder or cement, and additives with the molten slag powder generated in the molten slag powder generating step; And drying and sintering the mixture formed in the mixing step to a predetermined temperature, wherein in the drying and sintering step, carbon dioxide is generated in the process of combining the mixture at high temperature or changing phase, and the resulting carbon dioxide is converted into carbon dioxide. Due to the formation of air bubbles, a foam structure may be formed.

Figure 112019078403523-pat00004
Figure 112019078403523-pat00004

Description

폐기물 용융슬래그를 이용한 구조체 제조방법 및 이에 의해 제조된 구조체{METHOD FOR MANUFACTURING STRUCTURE USING WASTE MOLTEN SLAG AND STRUCTURE MANUFACTURED BY THE METHOD}Structure manufacturing method using waste molten slag and structure manufactured thereby {METHOD FOR MANUFACTURING STRUCTURE USING WASTE MOLTEN SLAG AND STRUCTURE MANUFACTURED BY THE METHOD}

본 발명은 폐기물 용융슬래그를 이용한 구조체 제조방법 및 이에 의해 제조된 구조체에 대한 발명이다.The present invention is an invention for a structure manufacturing method using waste molten slag and a structure manufactured thereby.

생활폐기물이나 산업폐기물의 용융과정에서 발생한 슬래그는 환경적으로 안정하고 강도가 높아 다양한 용도로 재활용이 가능하여 이를 재활용하기 위한 방법들이 제안되고 있다. Slag generated in the melting process of domestic waste or industrial waste is environmentally stable and high in strength, so it can be recycled for various purposes, and methods for recycling it have been proposed.

슬래그를 재활용하는 방법으로는 크게 2가지로 나눌 수 있다.Methods of recycling slag can be largely divided into two.

첫째로는 슬래그를 가공처리 없이 1차 제품으로 사용하는 방법으로서, 단순한 매립재, 노상재, 노반재, 토양개량재, 복토재, 성토재 등으로 이용하거나 콘크리트 골재나 아스팔트 혼화재로 이용하는 방법이다.First, as a method of using slag as a primary product without processing, it is used as a simple landfill material, roadbed material, roadbed material, soil improvement material, cover material, embankment material, etc., or as a concrete aggregate or asphalt admixture.

둘째로는 슬래그를 가공하여 2차 제품으로 사용하는 방법으로서, 발생되는 용융슬래그를 물리적 방법에 의해 분쇄화 하고, 여기에 다양한 기능성 첨가제를 혼합하여 건조, 소성 과정을 통하여 투수성 블록을 만들거나 단단한 구조체, 담지체, 인조대리석, 탄성재질 블록 등을 다양하게 제조하는 방법이 있다.Second, as a method of processing slag and using it as a secondary product, the generated molten slag is pulverized by a physical method, and various functional additives are mixed thereto to make a water-permeable block through drying and sintering. There are various methods of manufacturing structures, carriers, artificial marble, elastic blocks, and the like.

그러나, 용융슬래그를 활용하여 발포 구조체를 제조하는 방법에 대해서는 제안되어 있지 않은 상태이다. 따라서, 용융슬래그의 활용도를 높이고 고부가화하기 하기 위해, 발포를 통하여 보다 가볍고 기계적 강도가 높은 구조체를 제조하는 방법이 요구되고 있다.However, a method of manufacturing a foamed structure using molten slag has not been proposed. Accordingly, in order to increase the utilization and increase the added value of molten slag, there is a need for a method of manufacturing a structure that is lighter and has high mechanical strength through foaming.

한국 공개특허공보 제10-2010-0087579호Korean Patent Application Publication No. 10-2010-0087579

본 발명의 실시예는 폐기물 용융슬래그를 이용하여 보다 가볍고 기계적 강도가 높은 구조체를 제조하는 방법 및 이에 의해 제조된 구조체를 제공하고자 한다.An embodiment of the present invention is to provide a method for manufacturing a lighter and higher mechanical strength structure using waste molten slag, and a structure manufactured thereby.

본 발명의 일 측면에 따르면, 폐기물의 용융슬래그를 분쇄하여 분말을 생성하는 단계; 상기 용융슬래그 분말 생성단계에서 생성된 용융슬래그 분말에, 폐유리분말 또는 시멘트, 및 첨가제를 혼합하는 단계; 및 상기 혼합 단계에서 형성된 혼합물을 소정 온도까지 승온하여 건조 및 소성하는 단계를 포함하며, 상기 건조 및 소성 단계에 있어서, 상기 혼합물이 고온에서 결합되거나 상이 변하는 과정에서 이산화탄소가 발생하고, 발생된 이산화탄소로 인해 기포가 형성되어 발포 구조체가 형성되는, 폐기물 용융슬래그를 이용한 구조체의 제조방법이 제공된다.According to an aspect of the present invention, the step of producing a powder by pulverizing the molten slag of the waste; Mixing waste glass powder or cement, and additives with the molten slag powder generated in the molten slag powder generating step; And drying and sintering the mixture formed in the mixing step to a predetermined temperature, wherein in the drying and sintering step, carbon dioxide is generated in the process of combining the mixture at high temperature or changing phase, and the resulting carbon dioxide is converted into carbon dioxide. There is provided a method of manufacturing a structure using waste molten slag, in which bubbles are formed to form a foam structure.

상기 혼합 단계에 있어서, 물에 가성소다를 넣어 수용액을 제조한 후, 상기 수용액에 용융슬래그, 폐유리 및 산화알루미늄을 혼합하여, 물 10~20 중량%, 가성소다 4~10, 용융슬래그 40~60 중량%, 폐유리 20~40 중량% 및 산화알루미늄 1~5 중량%의 혼합물을 제조하고, 상기 건조 및 소성단계에 있어서, 상기 혼합물을 승온속도 2℃/분으로 80℃까지 승온한 후, 80℃에서 습도 80~98% 조건에서 1일 유지할 수 있다.In the mixing step, after preparing an aqueous solution by adding caustic soda to water, molten slag, waste glass, and aluminum oxide are mixed with the aqueous solution, and 10 to 20% by weight of water, 4 to 10 of caustic soda, and 40 to of molten slag To prepare a mixture of 60% by weight, 20 to 40% by weight of waste glass, and 1 to 5% by weight of aluminum oxide, and in the drying and firing step, the mixture is heated to 80°C at a heating rate of 2°C/min, It can be maintained for 1 day under 80~98% humidity at 80℃.

또한, 상기 혼합 단계에 있어서, 물에 가성소다를 넣어 수용액을 제조한 후, 상기 수용액에 용융슬래그를 혼합하여, 물 8~12 중량%, 가성소다 10~20 및 용융슬래그 70~95 중량%의 혼합물을 제조하고, 상기 건조 및 소성단계에 있어서, 상기 혼합물을 승온속도 2℃/분으로 80℃까지 승온한 후, 80℃에서 습도 80~98% 조건에서 1일 유지할 수 있다.In addition, in the mixing step, after preparing an aqueous solution by adding caustic soda to water, molten slag is mixed with the aqueous solution, and the amount of water is 8-12% by weight, caustic soda 10-20, and 70-95% by weight of molten slag. After preparing a mixture, and in the drying and firing step, the mixture may be heated to 80° C. at a temperature increase rate of 2° C./min, and then maintained at 80° C. and 80 to 98% humidity for 1 day.

또한, 상기 혼합 단계에 있어서, 용융슬래그 30~50 중량%, 폐유리 30~50 중량%, 물 10~20 중량%, 탄산칼슘 1~5 중량%, 탄산나트륨 1~3 중량% 및 카본분말 1~3 중량%의 혼합물을 제조하고, 상기 건조 및 소성단계에 있어서, 상기 혼합물은 승온속도 5℃/분으로 900℃까지 승온한 후, 900℃에서 3시간 유지할 수 있다.In addition, in the mixing step, molten slag 30 to 50% by weight, waste glass 30 to 50% by weight, water 10 to 20% by weight, calcium carbonate 1 to 5% by weight, sodium carbonate 1 to 3% by weight, and carbon powder 1 to 3% by weight of a mixture is prepared, and in the drying and firing step, the mixture may be heated to 900°C at a temperature increase rate of 5°C/min, and then maintained at 900°C for 3 hours.

또한, 상기 혼합 단계에 있어서, 용융슬래그 5~15 중량%, 폐유리 70~90 중량%, 물 7~15 중량%, 탄산칼슘 1 중량% 미만, 탄산나트륨 1 중량% 미만 및 카본분말 1 중량% 미만의 혼합물을 제조하고, 상기 건조 및 소성단계에 있어서, 상기 혼합물은 승온속도 5℃/분으로 900℃까지 승온한 후, 900℃에서 3시간 유지할 수 있다.In addition, in the mixing step, 5 to 15% by weight of molten slag, 70 to 90% by weight of waste glass, 7 to 15% by weight of water, less than 1% by weight of calcium carbonate, less than 1% by weight of sodium carbonate, and less than 1% by weight of carbon powder To prepare a mixture of, and in the drying and firing step, the mixture may be heated to 900°C at a temperature increase rate of 5°C/min, and then maintained at 900°C for 3 hours.

또한, 상기 혼합 단계에 있어서, 용융슬래그 5~15 중량%, 폐유리 70~90 중량% 및 물 7~15 중량%의 혼합물을 제조하고, 상기 건조 및 소성단계에 있어서, 상기 혼합물은 승온속도 5℃/분으로 900℃까지 승온한 후, 900℃에서 3시간 유지할 수 있다.In addition, in the mixing step, a mixture of 5 to 15% by weight of molten slag, 70 to 90% by weight of waste glass, and 7 to 15% by weight of water is prepared, and in the drying and firing step, the mixture has a heating rate of 5 After raising the temperature to 900°C at °C/min, it can be maintained at 900°C for 3 hours.

또한, 상기 혼합 단계에 있어서, 폐유리 70~90 중량%, 물 7~15 중량% 및 탄산칼슘 1~3 중량%의 혼합물을 제조하고, 상기 건조 및 소성단계에 있어서, 상기 혼합물은 승온속도 5℃/분으로 900℃까지 승온한 후, 900℃에서 3시간 유지할 수 있다.In addition, in the mixing step, a mixture of 70 to 90% by weight of waste glass, 7 to 15% by weight of water, and 1 to 3% by weight of calcium carbonate is prepared, and in the drying and firing step, the mixture has a heating rate of 5 After raising the temperature to 900°C at °C/min, it can be maintained at 900°C for 3 hours.

또한, 상기 혼합 단계에 있어서, 용융슬래그 10~30 중량%, 시멘트 50~70 중량% 및 물 10~20 중량%의 혼합물을 제조하고, 상기 건조 및 소성단계에 있어서, 상기 혼합물은 승온속도 5℃/분으로 900℃까지 승온한 후, 900℃에서 3시간 유지할 수 있다.In addition, in the mixing step, a mixture of 10 to 30% by weight of molten slag, 50 to 70% by weight of cement, and 10 to 20% by weight of water is prepared, and in the drying and firing step, the mixture has a heating rate of 5°C. After raising the temperature to 900℃ in /min, it can be maintained at 900℃ for 3 hours.

또한, 상기 혼합 단계에 있어서, 용융슬래그 70~70 중량%, 시멘트 25~40 중량% 및 물 10~20 중량%의 혼합물을 제조하고, 상기 건조 및 소성단계에 있어서, 상기 혼합물은 승온속도 5℃/분으로 900℃까지 승온한 후, 900℃에서 3시간 유지할 수 있다.In addition, in the mixing step, a mixture of 70 to 70% by weight of molten slag, 25 to 40% by weight of cement, and 10 to 20% by weight of water is prepared, and in the drying and firing step, the mixture has a heating rate of 5°C. After raising the temperature to 900℃ in /min, it can be maintained at 900℃ for 3 hours.

또한, 상기 혼합 단계에 있어서, 용융슬래그 30~55 중량%, 시멘트 30~55 중량% 및 물 10~20 중량%의 혼합물을 제조하고, 상기 건조 및 소성단계에 있어서, 상기 혼합물은 승온속도 5℃/분으로 900℃까지 승온한 후, 900℃에서 3시간 유지할 수 있다.In addition, in the mixing step, a mixture of 30 to 55% by weight of molten slag, 30 to 55% by weight of cement, and 10 to 20% by weight of water is prepared, and in the drying and firing step, the mixture has a heating rate of 5°C. After raising the temperature to 900℃ in /min, it can be maintained at 900℃ for 3 hours.

또한, 상기 혼합 단계에 있어서, 용융슬래그 40~75 중량%, 물 10~20 중량% 및 시멘트 킬른 더스트 20~40 중량%의 혼합물을 제조하고, 상기 건조 및 소성단계에 있어서, 상기 혼합물은 승온속도 5℃/분으로 900℃까지 승온한 후, 900℃에서 3시간 유지할 수 있다.In addition, in the mixing step, a mixture of 40 to 75% by weight of molten slag, 10 to 20% by weight of water, and 20 to 40% by weight of cement kiln dust is prepared, and in the drying and firing step, the mixture has a heating rate After raising the temperature to 900°C at 5°C/min, it can be maintained at 900°C for 3 hours.

또한, 상기 혼합 단계에 있어서, 용융슬래그 60~90 중량%, 물 1~10 중량% 및 몰탈 1~10 중량%의 혼합물을 제조하고, 상기 건조 및 소성단계에 있어서, 상기 혼합물을 승온속도 2℃/분으로 80℃까지 승온한 후, 80℃에서 습도 80~98% 조건에서 1일 유지할 수 있다.In addition, in the mixing step, a mixture of 60 to 90% by weight of molten slag, 1 to 10% by weight of water, and 1 to 10% by weight of mortar is prepared, and in the drying and firing step, the mixture is heated at a rate of 2°C. After raising the temperature to 80℃ in /min, it can be maintained for 1 day under 80~98% humidity at 80℃.

또한, 상기 혼합 단계에 있어서, 용융슬래그 40~75 중량%, 시멘트 20~60 중량%, 물 10~20 중량% 및 몰탈 1~10 중량%의 혼합물을 제조하고, 상기 건조 및 소성단계에 있어서, 상기 혼합물을 승온속도 2℃/분으로 80℃까지 승온한 후, 80℃에서 습도 80~98% 조건에서 1일 유지할 수 있다.In addition, in the mixing step, to prepare a mixture of 40 to 75% by weight of molten slag, 20 to 60% by weight of cement, 10 to 20% by weight of water, and 1 to 10% by weight of mortar, and in the drying and firing step, After raising the temperature of the mixture to 80° C. at a temperature increase rate of 2° C./min, it can be maintained at 80° C. and 80 to 98% humidity for 1 day.

본 발명의 다른 측면에 따르면, 용융슬래그 30~50 중량%, 폐유리 30~50 중량%, 물 10~20 중량%, 탄산칼슘 1~5 중량%, 탄산나트륨 1~3 중량% 및 카본분말 1~3 중량%의 혼합물로 이루어지며, 상기 혼합물은 승온속도 5℃/분으로 900℃까지 승온한 후, 900℃에서 3시간 유지하는 것에 의해 형성되는, 폐기물 용융슬래그를 이용한 구조체가 제공된다.According to another aspect of the present invention, molten slag 30 to 50% by weight, waste glass 30 to 50% by weight, water 10 to 20% by weight, calcium carbonate 1 to 5% by weight, sodium carbonate 1 to 3% by weight, and carbon powder 1 to Consisting of a mixture of 3% by weight, the mixture is formed by raising the temperature to 900°C at a heating rate of 5°C/min, and then maintaining the temperature at 900°C for 3 hours, to provide a structure using waste molten slag.

본 발명의 또 다른 측면에 따르면, 용융슬래그 5~15 중량%, 폐유리 70~90 중량%, 물 7~15 중량%, 탄산칼슘 1 중량% 미만, 탄산나트륨 1 중량% 미만 및 카본분말 1 중량% 미만의 혼합물로 이루어지며, 상기 혼합물은 승온속도 5℃/분으로 900℃까지 승온한 후, 900℃에서 3시간 유지하는 것에 의해 형성되는, 폐기물 용융슬래그를 이용한 구조체가 제공된다.According to another aspect of the present invention, 5 to 15% by weight of molten slag, 70 to 90% by weight of waste glass, 7 to 15% by weight of water, less than 1% by weight of calcium carbonate, less than 1% by weight of sodium carbonate, and 1% by weight of carbon powder Consisting of a mixture of less than, the mixture is formed by raising the temperature to 900°C at a heating rate of 5°C/min, and then maintaining the temperature at 900°C for 3 hours, a structure using waste molten slag is provided.

본 발명의 실시예들에 따르면, 폐기물 용융슬래그를 이용하여 보다 가볍고 기계적 강도가 높은 구조체를 제조할 수 있다. According to embodiments of the present invention, a structure having a lighter weight and high mechanical strength may be manufactured by using the waste molten slag.

도 1은 본 발명의 일 실시예에 따른 폐기물 용융슬래그 이용 구조체 제조방법을 설명하기 위한 순서도이다.
도 2는 발명의 일 실시예에 따른 폐기물 용융슬래그 이용 구조체 제조방법의 실시예 #1 내지 #12에 따라 제조된 구조체를 도시하는 사진이다.
1 is a flow chart illustrating a method of manufacturing a structure using molten slag waste according to an embodiment of the present invention.
2 is a photograph showing a structure manufactured according to Examples #1 to #12 of a method for manufacturing a structure using a waste molten slag according to an embodiment of the present invention.

이하, 첨부된 도면을 참조하여 본 발명의 실시예에 따른 구성 및 작용에 대해 상세하게 설명한다. 이하의 설명은 특허 청구 가능한 본 발명의 여러 측면(aspects) 중 하나이며, 하기의 설명은 본 발명에 대한 상세한 기술의 일부를 이룰 수 있다. 다만, 본 발명을 설명함에 있어 공지된 구성 또는 기능에 관한 구체적인 설명은 본 발명을 명료하게 하기 위해 생략할 수 있다.Hereinafter, a configuration and operation according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. The following description is one of the many aspects of the invention that are claimable, and the following description may form part of the detailed description of the invention. However, in describing the present invention, detailed descriptions of known configurations or functions may be omitted to clarify the present invention.

본 발명은 다양한 변경을 가할 수 있고 여러 가지 실시예들을 포함할 수 있는바, 특정 실시예들을 도면에 예시하고 상세한 설명에 설명하고자 한다. 그러나 이는 본 발명을 특정한 실시 형태에 대해 한정하려는 것이 아니며, 본 발명의 사상 및 기술 범위에 포함되는 모든 변경, 균등물 내지 대체물을 포함하는 것으로 이해되어야 한다.Since the present invention can make various changes and include various embodiments, specific embodiments will be illustrated in the drawings and described in the detailed description. However, this is not intended to limit the present invention to a specific embodiment, it should be understood to include all changes, equivalents, or substitutes included in the spirit and scope of the present invention.

이하, 첨부도면을 참조하여 본 발명의 일 실시형태에 따른 폐기물 용융슬래그를 이용한 구조체의 제조방법 대해 설명한다.Hereinafter, a method of manufacturing a structure using molten waste slag according to an embodiment of the present invention will be described with reference to the accompanying drawings.

도 1은 본 발명의 일 실시형태에 따른 폐기물 용융슬래그를 이용한 구조체의 제조방법을 설명하기 위한 순서도도이다.1 is a flow chart for explaining a method of manufacturing a structure using waste molten slag according to an embodiment of the present invention.

도 1에 도시된 바와 같이, 본 발명의 일 실시예에 따른 폐기물 용융슬래그를 이용한 구조체의 제조방법은, 폐기물의 용융슬래그를 분쇄하여 분말을 생성하는 단계(S10), 폐유리분말 또는 시멘트, 첨가제 등을 혼합하는 단계(S20), 생성된 혼합물을 소정 온도에서 건조한 후 소성하여 다공성 발포 구조체 형성단계(S30)를 포함할 수 있다.As shown in Figure 1, the method of manufacturing a structure using waste molten slag according to an embodiment of the present invention, the step of generating a powder by pulverizing the molten slag of the waste (S10), waste glass powder or cement, additives It may include a step of mixing (S20), the resulting mixture is dried at a predetermined temperature and then calcined to form a porous foam structure (S30).

보다 구체적으로, 단계(S10)에서는, 하수슬러지 또는 산업폐기물을 가스화/용융 장치에 투입하여, 건조, 열분해, 가스화, 용융 등의 과정을 순차적으로 거쳐서 생성된 용융슬래그를 분쇄하여 분말을 생성할 수 있다.More specifically, in step (S10), sewage sludge or industrial waste is put into a gasification/melting device, and the molten slag generated through sequential processes such as drying, pyrolysis, gasification, melting, etc. can be pulverized to generate powder. have.

하기 [표 1]은 본 발명의 일 실시형태에서 기본 원료로 사용한 용융슬래그에 대한 조성을 나타낸다. 용융슬래그는 폐기물 파쇄기를 사용하여 입자의 크기를 150메쉬 이하로 하였다.Table 1 below shows the composition of the molten slag used as a basic raw material in an embodiment of the present invention. The molten slag had a particle size of 150 mesh or less using a waste crusher.

Figure 112019078403523-pat00001
Figure 112019078403523-pat00001

단계(S20)에서는, 단계(S10)에서 생성된 용융슬래그 분말에 폐유리분말 또는 시멘트, 및 첨가제 등을 다양하게 배합하여 혼합물을 형성할 수 있다.In step (S20), the molten slag powder generated in step (S10) may be mixed with waste glass powder or cement, and additives in various ways to form a mixture.

하기 [표 2]는 본 발명의 일 실시형태에서 사용한 폐유리에 대한 조성을 나타낸다. 폐유리는 폐기물 파쇄기를 사용하여 입자의 크기를 150메쉬 이하로 하였다.The following [Table 2] shows the composition of the waste glass used in an embodiment of the present invention. Waste glass was made into a particle size of 150 mesh or less using a waste crusher.

단계(S20)에서 사용되는 첨가제로서, 탄산칼슘, 탄산나트륨, 카본분말, 가성소다, 산화알루미늄 등의 첨가제는 시중에서 사용하는 시약을 사용하였다.As additives used in step S20, commercially available reagents were used as additives such as calcium carbonate, sodium carbonate, carbon powder, caustic soda, and aluminum oxide.

구분division SiO2 SiO 2 Na2O3 Na 2 O 3 CaOCaO MgOMgO Al2O3 Al 2 O 3 K2OK 2 O Fe2O3 Fe 2 O 3 SO3 SO 3 함량(wt.%)Content (wt.%) 71.371.3 13.113.1 8.918.91 4.14.1 1.471.47 0.830.83 0.070.07 0.240.24

단계(S30)에서는, 용융슬래그를 분쇄하여 생성된 분말에 폐유리분말 또는 시멘트, 및 첨가제 등을 혼합하여 형성된 혼합물을 소정 온도까지 승온하여 건조 및 소성할 수 있다.In step S30, a mixture formed by mixing waste glass powder or cement, and additives with the powder produced by pulverizing the molten slag may be heated to a predetermined temperature, followed by drying and firing.

단계(S30)에서 혼합물이 건조 및 소성되는 과정에 있어서, 혼합물이 고온에서 결합되거나 상이 변하는 과정에서 이산화탄소가 발생하고, 발생된 이산화탄소로 인해 기포가 형성되어 다공성 발포 구조체가 형성될 수 있다.In the process of drying and sintering the mixture in step S30, carbon dioxide is generated while the mixture is combined at a high temperature or a phase is changed, and bubbles are formed due to the generated carbon dioxide, thereby forming a porous foamed structure.

단계(S30)에서 형성된 다공성 구조체는 가볍고 기계적 강도가 높은 구조체로서, 공원의 경계석 또는 벽돌의 대체 등 다양한 용도로 사용될 수 있다.The porous structure formed in step S30 is a structure having light and high mechanical strength, and may be used for various purposes, such as replacement of a curb stone or a brick in a park.

(실시예)(Example)

이하에서는, [표 3] 및 [표 4]를 참조하여 본 발명의 일 실시형태에 따른 폐기물 용융슬래그를 이용한 구조체의 제조방법의 실시예에 대하여 설명한다.Hereinafter, with reference to [Table 3] and [Table 4], an example of a method for manufacturing a structure using waste molten slag according to an embodiment of the present invention will be described.

Figure 112019078403523-pat00002
Figure 112019078403523-pat00002

Figure 112019078403523-pat00003
Figure 112019078403523-pat00003

[표 3]과 [표 4]의 실시예 #1 내지 #12는 구조체 제조와 관련한 혼합비율을 나타낸 것이며, 표 3 및 표 4에 기재된 비율에 따라 혼합하되, 혼합물의 총 중량%의 합이 100중량%가 되는 범위 내에서 배합할 수 있다. Examples #1 to #12 of [Table 3] and [Table 4] show the mixing ratios related to the manufacture of structures, and are mixed according to the ratios shown in Tables 3 and 4, but the sum of the total weight% of the mixture is 100 It can be blended within a range of weight percent.

비고란에 기재된 온도는 건조온도를 나타내며, 온도가 80℃의 경우에는 승온속도 2℃/분으로 80℃까지 승온한 뒤, 80℃에서 습도 80~98% 조건에서 1일 유지하였다. The temperature described in the remarks column represents the drying temperature, and in the case of a temperature of 80° C., the temperature was raised to 80° C. at a heating rate of 2° C./min, and then maintained at 80° C. under 80-98% humidity conditions for 1 day.

온도가 80℃의 경우의 실시예 #1, #2, #11 및 #12는 발포 구조체가 아닌 강도가 높은 구조체의 제조에 있어서의 조건을 나타낸다.Examples #1, #2, #11, and #12 in the case of a temperature of 80°C show conditions for manufacturing a structure having high strength, not a foam structure.

또한, 온도 900℃의 경우의 실시예 #3 내지 #10은 발포 구조체의 제조에 있어서의 조건을 나타내며, 승온속도 5℃/분으로 900℃까지 승온한 뒤, 900℃에서 3시간 유지하여 소성하는 것에 의해 발포 구조체를 제조하였다.In addition, Examples #3 to #10 in the case of a temperature of 900°C represent the conditions in the manufacture of the foamed structure, and the temperature is raised to 900°C at a heating rate of 5°C/min, and then kept at 900°C for 3 hours and then calcined. Thus, a foamed structure was produced.

실시예 #3 내지 #10에 있어서, 발포 구조체의 밀도는 250~ 600 kg/m3이었다.In Examples #3 to #10, the density of the foamed structure was 250 to 600 kg/m 3 .

배합순서는 실시예 #1 및 #2에 있어서는 물에 가성소다를 넣어 수용액을 제조한 후 기재된 성분의 순서별로 혼합하였다.In the order of mixing, in Examples #1 and #2, caustic soda was added to water to prepare an aqueous solution, followed by mixing according to the order of the components described.

한편, 실시예 #3 내지 #12에 있어서의 배합순서는 기재된 성분의 순서별로 혼합하였다.On the other hand, the mixing order in Examples #3 to #12 was mixed according to the order of the described components.

보다 상세히 설명하면, 실시예 #1에 있어서는, 물에 가성소다를 넣어 수용액을 제조한 후, 수용액에 용융슬래그, 폐유리 및 산화알루미늄을 혼합하여, 물 13 중량%, 가성소다 5 중량%, 용융슬래그 50 중량%, 폐유리 30 중량% 및 산화알루미늄 2 중량%의 혼합물을 제조하였다. 그 뒤, 혼합물을 승온속도 2℃/분으로 80℃까지 승온한 후, 80℃에서 습도 80~98% 조건에서 1일 유지하여 구조체를 제조하였다.In more detail, in Example #1, after preparing an aqueous solution by adding caustic soda to water, molten slag, waste glass, and aluminum oxide were mixed in the aqueous solution, and then 13% by weight of water, 5% by weight of caustic soda, and melting. A mixture of 50% by weight of slag, 30% by weight of waste glass, and 2% by weight of aluminum oxide was prepared. Thereafter, the mixture was heated to 80° C. at a heating rate of 2° C./min, and then maintained at 80° C. for 1 day in a humidity of 80 to 98% to prepare a structure.

실시예 #2에 있어서는, 물에 가성소다를 넣어 수용액을 제조한 후, 수용액에 용융슬래그를 혼합하여, 물 10 중량%, 가성소다 10 중량% 및 용융슬래그 80 중량%의 혼합물을 제조하였다. 그 뒤, 승온속도 2℃/분으로 80℃까지 승온한 후, 80℃에서 습도 80~98% 조건에서 1일 유지하여 구조체를 제조하였다.In Example #2, after preparing an aqueous solution by adding caustic soda to water, molten slag was mixed with the aqueous solution to prepare a mixture of 10% by weight of water, 10% by weight of caustic soda, and 80% by weight of molten slag. Thereafter, the temperature was raised to 80° C. at a heating rate of 2° C./min, and then maintained at 80° C. for 1 day in a humidity of 80 to 98% to prepare a structure.

실시예 #3에 있어서는, 용융슬래그 40 중량%에, 폐유리 40 중량%, 물 15 중량%, 탄산칼슘 3 중량%, 탄산나트륨 1 중량% 및 카본분말 1 중량%를 혼합하였다. 그 뒤, 승온속도 5℃/분으로 900℃까지 승온한 후, 900℃에서 3시간 유지하여 발포 구조체를 제조하였다.In Example #3, 40 wt% of molten slag was mixed with 40 wt% of waste glass, 15 wt% of water, 3 wt% of calcium carbonate, 1 wt% of sodium carbonate, and 1 wt% of carbon powder. Thereafter, the temperature was raised to 900°C at a temperature increase rate of 5°C/min, and then maintained at 900°C for 3 hours to prepare a foamed structure.

실시예 #4에 있어서는, 용융슬래그 10 중량%에, 폐유리 80 중량%, 물 8 중량%, 탄산칼슘 1 중량%, 탄산나트륨 0.5 중량% 및 카본분말 0.5 중량%를 혼합하였다. 그 뒤, 승온속도 5℃/분으로 900℃까지 승온한 후, 900℃에서 3시간 유지하여 발포 구조체를 제조하였다.In Example #4, 80% by weight of waste glass, 8% by weight of water, 1% by weight of calcium carbonate, 0.5% by weight of sodium carbonate, and 0.5% by weight of carbon powder were mixed with 10% by weight of molten slag. Thereafter, the temperature was raised to 900°C at a temperature increase rate of 5°C/min, and then maintained at 900°C for 3 hours to prepare a foamed structure.

실시예 #5에 있어서는, 용융슬래그 10 중량%에, 폐유리 80 중량% 및 물 10 중량%를 혼합하였다. 그 뒤, 승온속도 5℃/분으로 900℃까지 승온한 후, 900℃에서 3시간 유지하여 발포 구조체를 제조하였다.In Example #5, 80% by weight of waste glass and 10% by weight of water were mixed with 10% by weight of molten slag. Thereafter, the temperature was raised to 900°C at a temperature increase rate of 5°C/min, and then maintained at 900°C for 3 hours to prepare a foamed structure.

실시예 #6에 있어서는, 폐유리 90 중량%에, 물 9 중량% 및 탄산칼슘 1 중량%를 혼합하였다. 그 뒤, 승온속도 5℃/분으로 900℃까지 승온한 후, 900℃에서 3시간 유지하여 발포 구조체를 제조하였다.In Example #6, 9% by weight of water and 1% by weight of calcium carbonate were mixed with 90% by weight of waste glass. Thereafter, the temperature was raised to 900°C at a temperature increase rate of 5°C/min, and then maintained at 900°C for 3 hours to prepare a foamed structure.

실시예 #7에 있어서는, 용융슬래그 25 중량%에, 시멘트 65 중량% 및 물 10 중량%를 혼합하였다. 그 뒤, 승온속도 5℃/분으로 900℃까지 승온한 후, 900℃에서 3시간 유지하여 발포 구조체를 제조하였다.In Example #7, 65% by weight of cement and 10% by weight of water were mixed with 25% by weight of molten slag. Thereafter, the temperature was raised to 900°C at a temperature increase rate of 5°C/min, and then maintained at 900°C for 3 hours to prepare a foamed structure.

실시예 #8에 있어서는, 용융슬래그 60 중량%에, 시멘트 30 중량% 및 물 10 중량%를 혼합하였다. 그 뒤, 승온속도 5℃/분으로 900℃까지 승온한 후, 900℃에서 3시간 유지하여 발포 구조체를 제조하였다.In Example #8, 30% by weight of cement and 10% by weight of water were mixed with 60% by weight of molten slag. Thereafter, the temperature was raised to 900°C at a temperature increase rate of 5°C/min, and then maintained at 900°C for 3 hours to prepare a foamed structure.

실시예 #9에 있어서는, 용융슬래그 45 중량%에, 시멘트 45 중량% 및 물 10 중량%를 혼합하였다. 그 뒤, 승온속도 5℃/분으로 900℃까지 승온한 후, 900℃에서 3시간 유지하여 발포 구조체를 제조하였다.In Example #9, 45% by weight of molten slag was mixed with 45% by weight of cement and 10% by weight of water. Thereafter, the temperature was raised to 900°C at a temperature increase rate of 5°C/min, and then maintained at 900°C for 3 hours to prepare a foamed structure.

실시예 #10에 있어서는, 용융슬래그 60 중량%에, 물 10 중량% 및 시멘트 킬른 더스트 30 중량% 를 혼합하였다. 그 뒤, 승온속도 5℃/분으로 900℃까지 승온한 후, 900℃에서 3시간 유지하여 발포 구조체를 제조하였다.In Example #10, 10% by weight of water and 30% by weight of cement kiln dust were mixed with 60% by weight of molten slag. Thereafter, the temperature was raised to 900°C at a temperature increase rate of 5°C/min, and then maintained at 900°C for 3 hours to prepare a foamed structure.

실시예 #11에 있어서는, 용융슬래그 85 중량%에, 물 10 중량% 및 몰탈 5 중량% 를 혼합하였다. 그 뒤, 승온속도 5℃/분으로 900℃까지 승온한 후, 900℃에서 3시간 유지하여 발포 구조체를 제조하였다.In Example #11, 10% by weight of water and 5% by weight of mortar were mixed with 85% by weight of molten slag. Thereafter, the temperature was raised to 900°C at a temperature increase rate of 5°C/min, and then maintained at 900°C for 3 hours to prepare a foamed structure.

실시예 #12에 있어서는, 용융슬래그 50 중량%에, 시멘트 30 중량%, 물 10 중량% 및 몰탈 10 중량% 를 혼합하였다. 그 뒤, 승온속도 5℃/분으로 900℃까지 승온한 후, 900℃에서 3시간 유지하여 발포 구조체를 제조하였다.In Example #12, 50% by weight of molten slag was mixed with 30% by weight of cement, 10% by weight of water, and 10% by weight of mortar. Thereafter, the temperature was raised to 900°C at a temperature increase rate of 5°C/min, and then maintained at 900°C for 3 hours to prepare a foamed structure.

상기 실시예 #3 내지 #10에서 제조된 발포 구조체는 비중이 약 0.2~0.7 정도를 나타내었으며, 압축강도는 7 Kgf/cm2 이상을 나타내었다.The foamed structures prepared in Examples #3 to #10 exhibited a specific gravity of about 0.2 to 0.7, and a compressive strength of 7 Kgf/cm 2 or more.

도 2는 실시예 #1 내지 #12에 따라 제조된 구조체를 도시하는 사진이다.2 is a photograph showing a structure manufactured according to Examples #1 to #12.

이상 설명한 바와 같이, 본 발명의 실시예들에 따르면, 폐기물 용융슬래그를 이용하여 보다 가볍고 기계적 강도가 높은 구조체를 제조할 수 있다.As described above, according to the embodiments of the present invention, it is possible to manufacture a structure that is lighter and has high mechanical strength by using waste molten slag.

이상 본 발명의 실시예들을 구체적인 실시 형태로서 설명하였으나, 이는 예시에 불과한 것으로서, 본 발명은 이에 한정되지 않는 것이며, 본 명세서에 개시된 기초 사상에 따르는 최광의 범위를 갖는 것으로 해석되어야 한다. 당업자는 개시된 실시형태들을 조합/치환하여 적시되지 않은 형상의 패턴을 실시할 수 있으나, 이 역시 본 발명의 범위를 벗어나지 않는 것이다. 이외에도 당업자는 본 명세서에 기초하여 개시된 실시형태를 용이하게 변경 또는 변형할 수 있으며, 이러한 변경 또는 변형도 본 발명의 권리범위에 속함은 명백하다.The embodiments of the present invention have been described above as specific embodiments, but these are only examples, and the present invention is not limited thereto, and should be construed as having the widest scope in accordance with the basic idea disclosed in the present specification. A person skilled in the art may combine/substitute the disclosed embodiments to implement a pattern of a shape that is not indicated, but this also does not depart from the scope of the present invention. In addition, those skilled in the art can easily change or modify the disclosed embodiments based on the present specification, and it is clear that such changes or modifications also belong to the scope of the present invention.

Claims (15)

폐기물의 용융슬래그를 분쇄하여 분말을 생성하는 단계;
상기 용융슬래그 분말 생성단계에서 생성된 용융슬래그 분말에, 폐유리분말 또는 시멘트, 및 첨가제를 혼합하는 단계; 및
상기 혼합 단계에서 형성된 혼합물을 소정 온도까지 승온하여 건조 및 소성하는 단계를 포함하며,
상기 건조 및 소성 단계에 있어서, 상기 혼합물이 고온에서 결합되거나 상이 변하는 과정에서 이산화탄소가 발생하고, 발생된 이산화탄소로 인해 기포가 형성되어 발포 구조체가 형성되고,
상기 분말을 생성하는 단계에 있어서, 상기 용융슬래그는 분쇄되어 입자의 크기가 150 메쉬 이하로 되고,
상기 혼합 단계에 있어서,
용융슬래그 분말 30~50 중량%, 폐유리 분말 30~50 중량%, 물 10~20 중량%, 탄산칼슘 1~5 중량%, 탄산나트륨 1~3 중량% 및 카본분말 1~3 중량%의 혼합물을 제조하고,
혼합되는 상기 폐유리 분말의 입자의 크기는 150 메쉬 이하이고
상기 건조 및 소성단계에 있어서,
상기 혼합물은 승온속도 5℃/분으로 900℃까지 승온한 후, 900℃에서 3시간 유지하고,
상기 발포구조체는 250 ~ 600 kg/m3의 밀도를 가지는,
폐기물 용융슬래그를 이용한 구조체의 제조방법.
Pulverizing the molten slag of the waste to produce powder;
Mixing waste glass powder or cement, and additives with the molten slag powder generated in the molten slag powder generating step; And
It includes the step of heating the mixture formed in the mixing step to a predetermined temperature, drying and firing,
In the drying and firing step, carbon dioxide is generated in the process of combining the mixture at high temperature or changing phase, and bubbles are formed due to the generated carbon dioxide to form a foam structure,
In the step of generating the powder, the molten slag is pulverized to have a particle size of 150 mesh or less,
In the mixing step,
A mixture of 30 to 50% by weight of molten slag powder, 30 to 50% by weight of waste glass powder, 10 to 20% by weight of water, 1 to 5% by weight of calcium carbonate, 1 to 3% by weight of sodium carbonate, and 1 to 3% by weight of carbon powder Manufacturing,
The size of the particles of the waste glass powder to be mixed is less than 150 mesh,
In the drying and firing step,
The mixture was heated to 900°C at a temperature increase rate of 5°C/min, and then maintained at 900°C for 3 hours,
The foam structure has a density of 250 ~ 600 kg / m 3,
A method of manufacturing a structure using waste molten slag.
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Publication number Priority date Publication date Assignee Title
JP2001340832A (en) * 2000-03-29 2001-12-11 Seikatsu Kachi Sozo Jutaku Kaihatsu Gijutsu Kenkyu Kumiai Colored foamed material using slag glass
KR101436151B1 (en) * 2014-07-03 2014-10-06 (주) 건설자원개발연구원 Hardening composition for deep mixing method
JP2016135723A (en) * 2015-01-23 2016-07-28 国立大学法人山口大学 Porous geopolymer hardened body

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11106223A (en) * 1997-10-03 1999-04-20 Chiyoda Corp Production of glassy foamed product
KR101025443B1 (en) 2009-01-28 2011-03-30 주식회사 포스코건설 Manufacturing method of artificial marble using melting slag from waste and artificial marble thereby

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001340832A (en) * 2000-03-29 2001-12-11 Seikatsu Kachi Sozo Jutaku Kaihatsu Gijutsu Kenkyu Kumiai Colored foamed material using slag glass
KR101436151B1 (en) * 2014-07-03 2014-10-06 (주) 건설자원개발연구원 Hardening composition for deep mixing method
JP2016135723A (en) * 2015-01-23 2016-07-28 国立大学法人山口大学 Porous geopolymer hardened body

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