KR20160129251A - A Composite of complexed hauyne cement with calcium aluminate by using waste aluminum powder and manufacturing method thereof - Google Patents
A Composite of complexed hauyne cement with calcium aluminate by using waste aluminum powder and manufacturing method thereof Download PDFInfo
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- KR20160129251A KR20160129251A KR1020150061067A KR20150061067A KR20160129251A KR 20160129251 A KR20160129251 A KR 20160129251A KR 1020150061067 A KR1020150061067 A KR 1020150061067A KR 20150061067 A KR20150061067 A KR 20150061067A KR 20160129251 A KR20160129251 A KR 20160129251A
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- calcium aluminate
- waste aluminum
- aluminum dust
- hauyne
- cement composition
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- 239000004568 cement Substances 0.000 title claims abstract description 44
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 title claims abstract description 34
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 239000002699 waste material Substances 0.000 title claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 239000002131 composite material Substances 0.000 title claims description 16
- 229910052666 hauyne Inorganic materials 0.000 title abstract description 9
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 24
- 239000000203 mixture Substances 0.000 claims abstract description 24
- 239000000428 dust Substances 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 16
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 15
- 239000010440 gypsum Substances 0.000 claims description 15
- 229910052602 gypsum Inorganic materials 0.000 claims description 15
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 10
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 5
- 238000001354 calcination Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000011575 calcium Substances 0.000 claims description 2
- 229910052791 calcium Inorganic materials 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 238000010791 quenching Methods 0.000 claims description 2
- 230000000171 quenching effect Effects 0.000 claims description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 14
- 238000010276 construction Methods 0.000 abstract description 8
- 239000002994 raw material Substances 0.000 abstract description 6
- 239000010881 fly ash Substances 0.000 abstract description 5
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 abstract description 5
- 239000002893 slag Substances 0.000 abstract description 5
- 229920000876 geopolymer Polymers 0.000 abstract description 4
- 239000010801 sewage sludge Substances 0.000 abstract description 4
- 239000004567 concrete Substances 0.000 abstract description 3
- 238000007710 freezing Methods 0.000 abstract description 3
- 239000004035 construction material Substances 0.000 abstract description 2
- 239000010802 sludge Substances 0.000 abstract description 2
- 230000003100 immobilizing effect Effects 0.000 abstract 1
- 230000000087 stabilizing effect Effects 0.000 abstract 1
- 239000000292 calcium oxide Substances 0.000 description 6
- 239000002253 acid Substances 0.000 description 4
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 235000012255 calcium oxide Nutrition 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 239000010791 domestic waste Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- 229910001341 Crude steel Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000012407 engineering method Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- -1 phosphorus compound Chemical class 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008961 swelling Effects 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
-
- 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
- C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
- C04B18/062—Purification products of smoke, fume or exhaust-gases
- C04B18/064—Gypsum
-
- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions 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
- C04B28/06—Aluminous cements
-
- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions 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
- C04B28/10—Lime cements or magnesium oxide cements
- C04B28/12—Hydraulic lime
-
- 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
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
본 발명은 시멘트 재료와 지오폴리머인 고로슬래그, 플라이 애쉬 또는 메타 카올린과 함께 사용되어 조강성의 특징을 발현할 수 있는 원료로 사용될 수 있는 폐알루미늄 분진을 이용한 칼슘알루미네이트가 함유된 복합 아우인(Hauyne)계 시멘트 조성물 및 그 제조 방법에 관한 것이다.The present invention relates to a composite alumina containing calcium aluminate using waste aluminum dust which can be used as a raw material capable of being used in combination with cement material and blast furnace slag, fly ash or meta-kaolin, which is a geopolymer, ) Based cement composition and a method of producing the same.
일반적으로 팽창성, 조강성, 속경성 등의 특성을 갖는 클링커인 아우인(Hauyne, 일명 Calcium Sulfo Aluminate -CSA 라 함)은 보오크사이트-석고-석회석의 재료로 약 섭씨 1300도 이상에서 제조한다. 아우인 화합물 제조를 위한 알루미나원으로서, 보오크사이트를 사용하는 것이 일반적인 제조방법이며, 일부 알루미나 함량이 높은 점토질 원료를 사용하여 제조하기도 하였으나 이는 실리카의 함량이 높아 아우인계 시멘트 본질의 특성인 팽창성, 조강성, 속경성의 발현에는 부족한 재료가 되어 불완전한 재료가 되어왔다. 또한 상기의 아우인계 시멘트 생성조건에서는 고온으로 소성함으로 인하여, 아우인계 시멘트의 생성 조건 중 가장 중요한 아황산 성분이 분해되기 때문에 소성조건의 확립이 매우 어렵다. 또한 아황산가스의 방출로 인한 대기오염 및 제조장치의 부식 등으로 인하여 제조비용은 상승하게 되었다.Hauyne (also known as Calcium Sulfo Aluminate-CSA), a clinker with properties such as swelling, toughness and rapid hardening, is generally made from boraxite-gypsum-limestone at temperatures above 1300 ° C. It is a common manufacturing method to use bauxite as an alumina source for preparing a phosphorus compound, and it has been also made by using a clay material having a high alumina content. However, since the content of silica is high, It has become insufficient material for the expression of roughness and rapid hardness, and it has become incomplete material. Also, in the afore-mentioned cement-producing conditions, it is very difficult to establish the sintering condition because the sulfurous acid component, which is one of the most important forming conditions of the cement-based cement, is decomposed due to sintering at a high temperature. In addition, manufacturing costs have increased due to air pollution due to the discharge of sulfur dioxide and corrosion of the manufacturing equipment.
따라서, 본 발명은 상기와 같은 종래 기술의 문제점을 해결하기 위해 안출된 것으로, 본 발명의 목적은, 알루미늄 금속의 제련과정에서 대량으로 발생되나 재활용 가치가 거의 없는 국내의 폐알루미늄 분진을 활용하여 조강성능 구현이 탁월한 칼슘알루미네이트가 함유된 복합 아우인계 클링커 화합물의 제조방법에 관한 것이다.SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a method and apparatus for recovering crude aluminum dust by using domestic waste aluminum dust which is generated in large quantities during the smelting process of aluminum metal, Based clinker compound containing calcium aluminate excellent in performance performance.
폐알루미늄 분진은 화학조성상 알루미나 성분이 약 70 중량% 이상이 함유되어 있으며(그림1, Al2O3), 이를 이용하여 전기분해에 의한 알루미늄 잉고트(ingot)용으로 사용되기도 한다. 그러나 과잉의 불순물 성분으로 인하여 범용적으로 사용되지 못할 뿐 아니라, 전기분해에 의한 에너지 비용이 과다하게 소모되는 문제점이 있어, 대부분이 폐기되고 있는 실정이다. 이러한 재활용 불가능 상태의 원료를 최적의 제조 조건을 확보하여 전량 수입에 의존하고 있는 특수 시멘트 재료를 제조하는 것은 산업자원의 안정적 확보뿐만 아니라 귀중한 천연자원을 유효하게 활용할 수 있도록 하는 중요한 과제이며 또한 건설시장 개방에 따른 토목, 건축산업에서의 대외 경쟁력 강화 및 각종 토목, 건축 공법개발의 밑거름 역할을 할 수 있을 것이다.Waste aluminum dust contains about 70% by weight or more of alumina in chemical composition (Fig. 1, Al 2 O 3 ) and is used for aluminum ingot by electrolysis. However, due to an excessive amount of impurities, it is not generally used, and the energy cost due to electrolysis is excessively consumed, and most of them are being discarded. The production of special cement materials, which rely on imports to ensure the optimum production conditions of these non-recyclable raw materials, is an important task to secure the stable use of industrial resources as well as to make effective use of valuable natural resources. It will be able to serve as a basis for strengthening foreign competitiveness in civil engineering and construction industry and developing various civil engineering and construction methods.
따라서 본 발명은 상기와 같은 폐알루미늄 분진의 재활용에 대한 문제점을 해결하기 위해 안출한 것으로서, 본 발명의 목적은 대량으로 발생되나 재활용 가치가 거의 없는 국내의 폐알루미늄 분진을 활용하여 전량 수입에 의존하고 있는 조강성 시멘트 재료의 원료인 칼슘알루미네이트가 함유된 복합 아우인계 시멘트 조성물 및 그 제조방법에 관한 것으로서, 칼슘알루미네이트가 함유된 복합 아우인계 시멘트 조성물 제조를 위하여 알루미나의 함량이 70 중량% 이상인 폐알루미늄 분진과 탈황 석고를 사용하여 기존의 시멘트 제조공정 온도보다 낮은 900℃ 내지 1,100℃ 범위의 저에너지원으로 칼슘 알루미네이트가 함유된 복합 아우인계 시멘트 조성물을 제조함으로써 전량 수입에 의존하고 있는 조강성능의 물성을 갖는 특수 시멘트 조성물을 제공하는 데 있다.Accordingly, the present invention has been made to solve the problem of recycling waste aluminum dust as described above, and it is an object of the present invention to utilize domestic waste aluminum dust, which is generated in a large amount but has little recycling value, The present invention relates to a composite cement composition containing calcium aluminate, which is a raw material for a cement material having a high rigidity, and a method for preparing the same. More particularly, the present invention relates to a cement composition containing calcium aluminate, By using aluminum dust and desulfurization gypsum, a composite cement composition containing calcium aluminate as a low-energy source in the range of 900 ° C to 1,100 ° C, which is lower than the conventional cement manufacturing process temperature, is manufactured. To provide a special cement composition having There is.
또한, 본 발명의 또 다른 목적으로, 본 발명의 칼슘 알루미네이트가 함유된 복합 아우인계 시멘트 조성물을 사용하여 함수율이 높은 하수 슬러지 고화용으로 사용될 수 있는 특수 시멘트인 칼슘 알루미네이트가 함유된 복합 아우인계 시멘트 조성물을 제공하는 데 있다.Further, according to another aspect of the present invention, there is provided a composite cement composition containing calcium aluminate, which is a special cement which can be used for solidifying sewage sludge having a high water content by using the cement composition containing calcium aluminate of the present invention Compositions.
상기 목적을 달성하기 위하여, 본 발명은 알루미나(Al2O3) 함량이 70 내지 80 중량%인 폐알루미늄 분진 50 내지 80 중량%, 생석회(CaO) 성분이 30 내지 60 중량%, 무수석고(CaSO4) 성분이 30 내지 60 중량% 함유되어 있는 탈황석고 20 내지 50 중량%를 혼합한 후 지름 1cm 정도의 크기로 클링커를 제조하여 1일간 공기 중에서 자연 건조한다. 건조한 클링커를 전기로에서 승온속도 5℃로 900℃ 내지 1,100℃로 1시간 동안 소성한 후 공기 중에서 급냉시켜 칼슘 알루미네이트가 함유된 복합 아우인계 시멘트 클링커를 얻는다.In order to achieve the above-mentioned object, the present invention provides a method for producing a steel sheet, which comprises 50 to 80 wt% of waste aluminum dust having an alumina (Al 2 O 3 ) content of 70 to 80 wt%, 30 to 60 wt% of calcium oxide (CaO) 4 ) 20 to 50% by weight of a desulfurized gypsum containing 30 to 60% by weight of a component is mixed, and then the clinker is manufactured to a size of about 1 cm in diameter and naturally dried in the air for one day. The dried clinker is calcined in an electric furnace at a heating rate of 5 캜 for 1 hour from 900 캜 to 1,100 캜 and then quenched in air to obtain a composite alumina cement clinker containing calcium aluminate.
상기에서 구한 칼슘 알루미네이트가 함유된 복합 아우인계 시멘트 클링커를 다시 분말도 4,000 내지 5,000 블레인(Blaine, cm2/g)로 분쇄하여 본 발명품을 얻는다.The calcium aluminate-containing composite austenitic cement clinker obtained as described above is pulverized again with powder of 4,000 to 5,000 blanks (Blaine, cm 2 / g) to obtain the present invention.
일 구현 예에서, 상기 폐알루미늄 분진은 알루미나(Al2O3) 함량이 70 내지 80 중량%인 것을 사용한다. 알루미나(Al2O3) 함량이 70 중량% 이하이면, 칼슘 알루미네이트 생성량이 부족하기 때문에 바람직하지 못하며, 바람직하게는 알루미나(Al2O3) 함량이 73 중량% 이상인 것을 사용한다.In one embodiment, the waste aluminum dust has an alumina (Al 2 O 3 ) content of 70 to 80 wt%. When the content of alumina (Al 2 O 3 ) is 70% by weight or less, an amount of calcium aluminate is insufficient, which is not preferable, and preferably an alumina (Al 2 O 3 ) content of 73% by weight or more is used.
일 구현 예에서, 탈황석고는 화력발전소에서 처리된 비산 탈황석고를 사용하며, 생석회(CaO) 성분이 30 내지 60 중량% 함유되어 있는 것을 사용한다. 생석회(CaO) 성분이 30 중량% 이하이면 칼슘 알루미네이트 생성율이 저하되며, 60 중량% 이상이면 미반응 생석회 잔량이 높아져 조강성 구현이 곤란하다. 바람직하게는, 생석회(CaO) 성분은 35 내지 50 중량% 범위의 것을 사용하는 것이 좋다.In one embodiment, the desulfurized gypsum is a non-acid desulfurized gypsum treated in a thermal power plant and contains 30 to 60 wt% calcium oxide (CaO). When the CaO content is less than 30% by weight, the calcium aluminate production rate decreases. When the CaO content is more than 60% by weight, the remaining unreacted quicklime is increased and it is difficult to realize the toughness. Preferably, the calcium oxide (CaO) component is in the range of 35 to 50% by weight.
일 구현 예에서, 탈황석고는 화력발전소에서 처리된 비산 탈황석고를 사용하며, 무수석고(CaSO4) 성분이 30 내지 60 중량% 함유되어 있는 것을 사용한다. 무수석고(CaSO4) 성분이 30 중량% 이하이면 아우인의 생성이 어려우며, 60 중량% 이상이면, 칼슘알루미네이트 생성량이 적어진다. 바람직하게는, 무수석고(CaSO4) 성분은 35 내지 50 중량% 범위의 것을 사용하는 것이 좋다.In one embodiment, the desulfurized gypsum employs a non-acid desulfurized gypsum treated in a thermal power plant and contains 30 to 60 wt% of anhydrous gypsum (CaSO 4 ). If the content of the anhydrous gypsum (CaSO 4 ) is less than 30% by weight, generation of outgrowth is difficult. If the amount is more than 60% by weight, the amount of calcium aluminate to be produced is reduced. Preferably, the anhydrous gypsum (CaSO 4 ) component is used in an amount of 35 to 50% by weight.
본 발명은 조강성의 특징으로 시멘트 재료와 지오폴리머인 고로슬래그, 플라이 애쉬 또는 메타 카올린과 함께 사용되어 조강성의 특징을 발현할 수 있는 원료 또는 함수율이 높은 고함수 하수 슬러지의 고화재료로도 사용될 수 있으며, 특히 시멘트에 혼합 사용되어 우수한 조강특성을 나타냄으로서 동절기 시멘트 및 콘크리트 재료 시공시 동결 방지 및 작업 마감 시간의 조기 단축 등의 특성을 구현할 수 있기 때문에, 이러한 특성을 이용하여 토목, 건축 부문에서의 동절기 공사용 재료로 사용되어 공사기간 단축 효과를 발휘할 수 있으며, 또한 고함수 슬러지의 고정화 및 안정화에 대한 탁월한 효과가 있다.The present invention can be used as a solidification material for a high-function sewage sludge having a high water content or a raw material capable of expressing the characteristics of crude steel by being used together with a cement material and a geopolymer blast furnace slag, fly ash or meta kaolin , It is mixed with cement in particular, and it shows excellent steel-making characteristics. Therefore, it is possible to realize the characteristics such as prevention of freezing and early cut-off time in the construction of cement and concrete in the winter season. Therefore, It can be used as a construction material to show a shortening effect on the construction period and also has an excellent effect for immobilization and stabilization of high function sludge.
이하 본 발명을 상세히 설명한다.Hereinafter, the present invention will be described in detail.
본 발명은, 1) 알루미나(Al2O3) 함량이 70 내지 80 중량%인 폐알루미늄 분진 50 내지 80 중량%, 생석회(CaO) 성분이 30 내지 60 중량%, 무수석고(CaSO4) 성분이 30 내지 60 중량% 함유되어 있는 탈황석고 20 내지 50 중량%를 회전형 혼합기에서 1분당 회전수 20으로 회전하면서 혼합하는 단계; 2) 1)항의 혼합물을 회전형 혼합기에서 1분당 회전수 20으로 회전하면서 물을 분체량 대비 50 내지 80 중량% 가하면서 지름 1cm 정도의 크기로 클링커를 제조하는 단계; 3) 제조한 클링커를 1일간 공기 중에서 자연 건조하는 단계; 4) 건조한 클링커를 회전식 소성로에서 회전속도를 1분단 5 내지 10으로 회전하면서, 승온속도 5℃로 900℃ 내지 1,100℃로 1시간 동안 소성하는 단계; 5) 소성한 후 공기 중에서 급냉시켜 칼슘알루미네이트가 함유된 복합 아우인계 시멘트 클링커를 얻는 단계; 6) 상기 5)항에서 구한 칼슘알루미네이트가 함유된 아우인계 시멘트 클링커를 다시 분말도 4,000 내지 5,000 블레인(Blaine, cm2/g)로 분쇄하여 본 발명품인 칼슘알루미네이트가 함유된 복합 아우인계 시멘트 조성물을 얻는다.The present invention provides: 1) alumina (Al 2 O 3) content is 70 to 80% by weight of waste aluminum dust 50 to 80% by weight, calcium oxide (CaO) component is 30 to 60% by weight of anhydrous gypsum (CaSO 4) component 20 to 50% by weight of the desulfurized gypsum containing 30 to 60% by weight is mixed with the mixture while rotating at 20 revolutions per minute in a rotary mixer; 2) preparing a clinker having a size of about 1 cm in diameter while rotating the mixture of the item 1) in a rotary mixer at 20 revolutions per minute at a rate of 50 to 80% by weight based on the weight of the powder; 3) naturally drying the manufactured clinker in air for 1 day; 4) firing the dried clinker in a rotary firing furnace at a heating rate of 5 占 폚 at 900 占 폚 to 1,100 占 폚 for 1 hour while rotating at a rotational speed of 5 minutes to 10 minutes; 5) calcining and quenching in air to obtain a composite augenitic cement clinker containing calcium aluminate; 6) The calcium aluminate-containing austenitic cement clinker obtained in the above item 5) was pulverized again with a powder of 4,000 to 5,000 blances (Blaine, cm 2 / g) to obtain a composite alumina cement To obtain a composition.
본 발명에서 사용하는 칼슘알루미네이트 성분을 생성시키기 위하여, 폐알루미늄 분진은 알루미나(Al2O3) 함량이 70 내지 80 중량%인 것을 사용한다. 알루미나(Al2O3) 함량이 70 중량% 이하이면, 칼슘 알루미네이트 생성량이 부족하기 때문에 바람직하지 못하며, 바람직하게는 알루미나(Al2O3) 함량이 73 중량% 이상인 것을 사용한다.In order to produce the calcium aluminate component used in the present invention, the waste aluminum dust has an alumina (Al 2 O 3 ) content of 70 to 80% by weight. When the content of alumina (Al 2 O 3 ) is 70% by weight or less, an amount of calcium aluminate is insufficient, which is not preferable, and preferably an alumina (Al 2 O 3 ) content of 73% by weight or more is used.
한편, 칼슘알루미네이트 성분을 생성시키기 위하여, 탈황석고는 화력발전소에서 처리된 비산 탈황석고를 사용하며, 생석회(CaO) 성분이 30 내지 60 중량% 함유되어 있는 것을 사용한다. 생석회(CaO) 성분이 30 중량% 이하이면 칼슘 알루미네이트 생성율이 저하되며, 60 중량% 이상이면 미반응 생석회 잔량이 높아져 조강성 구현이 곤란하다. 바람직하게는, 생석회(CaO) 성분은 35 내지 50 중량% 범위의 것을 사용하는 것이 좋다.On the other hand, in order to produce a calcium aluminate component, desulfurized gypsum is a non-acid desulfurized gypsum treated in a thermal power plant and contains 30 to 60% by weight of calcium oxide (CaO). When the CaO content is less than 30% by weight, the calcium aluminate production rate decreases. When the CaO content is more than 60% by weight, the remaining unreacted quicklime is increased and it is difficult to realize the toughness. Preferably, the calcium oxide (CaO) component is in the range of 35 to 50% by weight.
또한, 아우인 클링커를 생성시키기 위하여 탈황석고는 화력발전소에서 처리된 비산 탈황석고를 사용하며, 무수석고(CaSO4) 성분이 30 내지 60 중량% 함유되어있는 것을 사용한다. 무수석고(CaSO4) 성분이 30 중량% 이하이면 아우인의 생성이 어려우며, 60 중량% 이상이면, 칼슘알루미네이트 생성량이 적어진다. 바람직하게는, 무수석고(CaSO4) 성분은 35 내지 50 중량% 범위의 것을 사용하는 것이 좋다.In addition, in order to produce a sub-clinker, desulfurization gypsum is a non-acid desulfurized gypsum treated in a thermal power plant and contains 30 to 60 wt% of anhydrous gypsum (CaSO 4 ). If the content of the anhydrous gypsum (CaSO 4 ) is less than 30% by weight, generation of outgrowth is difficult. If the amount is more than 60% by weight, the amount of calcium aluminate to be produced is reduced. Preferably, the anhydrous gypsum (CaSO 4 ) component is used in an amount of 35 to 50% by weight.
이와 같이 구성된 본 발명의 조성물은, 조강성이 발휘되어 시멘트 재료와 지로폴리머인 고로슬래그, 플라이 애쉬 또는 메타 카올린과 함께 사용되어 조강성의 특징을 발현할 수 있는 원료 또는 함수율이 높은 고함수 하수 슬러지의 고화재료로 사용될 수 있으며, 특히 시멘트에 혼합 사용되어 우수한 조강특성을 나타냄으로서 동절기 시멘트 및 콘크리트 재료 시공시 동결 방지 및 작업 마감 시간의 조기 단축 등의 특성을 구현할 수 있는 효과가 있다.The thus constituted composition of the present invention can be used in combination with a cement material and a gyro polymer such as blast furnace slag, fly ash or meta-kaolin to exhibit crude properties, or a high-function sewage sludge It can be used as a solidification material. Especially, it is mixed with cement and exhibits excellent steel-making properties. Thus, it is possible to realize characteristics such as prevention of freezing and early shortening of the work finishing time during construction of cement and concrete in winter season.
Claims (5)
탈황석고 20 내지 50 중량%; 로 구성되는 것을 특징으로 하는 폐알루미늄 분진을 이용한 칼슘알루미네이트가 함유된 복합 아우인계 시멘트 조성물50 to 80 wt% of waste aluminum dust;
20 to 50 wt% of desulfurized gypsum; Characterized in that the calcium aluminate-containing composite austenitic cement composition
상기 폐알루미늄 분진은 알루미나(Al2O3) 함량이 70 내지 80 중량%인 것을 사용하는 것을 특징으로 하는 폐알루미늄 분진을 이용한 칼슘알루미네이트가 함유된 복합 아우인계 시멘트 조성물The method according to claim 1,
Wherein the waste aluminum dust has an alumina (Al 2 O 3 ) content of 70 to 80% by weight, and the calcium aluminate-containing composite austenitic cement composition
탈황석고는 생석회(CaO) 성분이 30 내지 60 중량% 함유되어 있는 것을 사용 특징으로 하는 폐알루미늄 분진을 이용한 칼슘알루미네이트가 함유된 복합 아우인계 시멘트 조성물The method according to claim 1,
Wherein the desulfurized gypsum contains calcium oxide (CaO) in an amount of 30 to 60% by weight, wherein the calcium aluminate-containing composite austenitic cement composition
탈황석고는 무수석고(CaSO4) 성분이 30 내지 60 중량% 함유되어 있는 것을 사용 특징으로 하는 폐알루미늄 분진을 이용한 칼슘알루미네이트가 함유된 복합 아우인계 시멘트 조성물The method according to claim 1,
Wherein the desulfurized gypsum contains 30 to 60% by weight of an anhydrous gypsum (CaSO 4 ) component, wherein the calcium aluminate-containing composite austenitic cement composition
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110734233A (en) * | 2019-11-22 | 2020-01-31 | 中铝中州铝业有限公司 | Method for preparing pure calcium aluminate cement by baking electrical dust collection powder with aluminum hydroxide |
| CN115521099A (en) * | 2022-10-24 | 2022-12-27 | 上海百奥恒新材料有限公司 | Composition for preparing geopolymer artificial reef, method for preparing geopolymer artificial reef, geopolymer artificial reef |
| KR20230155889A (en) * | 2022-05-04 | 2023-11-13 | 주식회사 대웅 | Materials for constructing pretensioned spun high strength concrete pile |
| EP4484398A1 (en) | 2023-06-26 | 2025-01-01 | Instituto Politécnico De Leiria | Geopolymer compositions comprising aluminum sludge and use thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110734233A (en) * | 2019-11-22 | 2020-01-31 | 中铝中州铝业有限公司 | Method for preparing pure calcium aluminate cement by baking electrical dust collection powder with aluminum hydroxide |
| KR20230155889A (en) * | 2022-05-04 | 2023-11-13 | 주식회사 대웅 | Materials for constructing pretensioned spun high strength concrete pile |
| CN115521099A (en) * | 2022-10-24 | 2022-12-27 | 上海百奥恒新材料有限公司 | Composition for preparing geopolymer artificial reef, method for preparing geopolymer artificial reef, geopolymer artificial reef |
| CN115521099B (en) * | 2022-10-24 | 2023-08-01 | 上海百奥恒新材料有限公司 | Composition for preparing geopolymer artificial fish reef, method for preparing geopolymer artificial fish reef and geopolymer artificial fish reef |
| EP4484398A1 (en) | 2023-06-26 | 2025-01-01 | Instituto Politécnico De Leiria | Geopolymer compositions comprising aluminum sludge and use thereof |
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