KR100775420B1 - 산화슬래그 재활용 시스템 - Google Patents
산화슬래그 재활용 시스템 Download PDFInfo
- Publication number
- KR100775420B1 KR100775420B1 KR1020060086763A KR20060086763A KR100775420B1 KR 100775420 B1 KR100775420 B1 KR 100775420B1 KR 1020060086763 A KR1020060086763 A KR 1020060086763A KR 20060086763 A KR20060086763 A KR 20060086763A KR 100775420 B1 KR100775420 B1 KR 100775420B1
- Authority
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- South Korea
- Prior art keywords
- slag
- iron
- hopper
- oxidized
- size
- Prior art date
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- 239000002893 slag Substances 0.000 title claims abstract description 151
- 238000004064 recycling Methods 0.000 title claims abstract description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 137
- 229910052742 iron Inorganic materials 0.000 claims abstract description 68
- 239000012535 impurity Substances 0.000 claims abstract description 13
- 238000012546 transfer Methods 0.000 claims abstract description 12
- 230000032683 aging Effects 0.000 claims abstract description 11
- 238000007599 discharging Methods 0.000 claims abstract description 3
- 238000009412 basement excavation Methods 0.000 claims description 6
- 238000011084 recovery Methods 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 4
- 238000012216 screening Methods 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 1
- 229910052760 oxygen Inorganic materials 0.000 claims 1
- 239000001301 oxygen Substances 0.000 claims 1
- 238000000227 grinding Methods 0.000 abstract description 5
- 239000011384 asphalt concrete Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000000704 physical effect Effects 0.000 abstract description 4
- 239000006148 magnetic separator Substances 0.000 abstract 4
- 229910001018 Cast iron Inorganic materials 0.000 abstract 2
- 238000010891 electric arc Methods 0.000 abstract 2
- 238000007873 sieving Methods 0.000 abstract 2
- 238000012360 testing method Methods 0.000 description 17
- 238000010998 test method Methods 0.000 description 7
- 238000004458 analytical method Methods 0.000 description 6
- 230000005484 gravity Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 5
- 229910001385 heavy metal Inorganic materials 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000007922 dissolution test Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000007654 immersion Methods 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000013112 stability test Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 description 2
- 235000011152 sodium sulphate Nutrition 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
Images
Classifications
-
- 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
- C04B5/00—Treatment of metallurgical slag ; Artificial stone from molten metallurgical slag
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/005—Separation by a physical processing technique only, e.g. by mechanical breaking
-
- 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
-
- 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
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/141—Slags
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/026—Comminuting, e.g. by grinding or breaking; Defibrillating fibres other than asbestos
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
체크기 | 40 ㎜ | 25 ㎜ | 20 ㎜ | 13 ㎜ | 10 ㎜ | 5 ㎜ | 2.5 ㎜ | 1.2 ㎜ | 0.6 ㎜ | 0.3 ㎜ | 0.15 ㎜ | 0.08 ㎜ |
시료명 | ||||||||||||
#57 | 100 | 97.4 | 91.8 | 55.1 | 28.7 | 6.7 | 1.2 | |||||
#78 | 100 | 100 | 100 | 96.7 | 55.7 | 22.8 | 2.7 | 1.1 | ||||
No.4 | 100 | 100 | 100 | 100 | 100 | 100 | 71.7 | 43.4 | 29.6 | 18.3 | 11.7 | 4.0 |
구 분 | 겉보기 비중 | 흡수율(%) | 비 고 |
#57 | 3.28 | 2.47 | KS F 2535 흡수율 규정 3.0% 이하 |
#78 | 3.35 | 2.33 | |
No.4 | 3.41 | 2.98 |
구 분 | 수침팽창율(%) | ||
에이징(3개월) | 에이징 미처리 | 시험기준 KS F 2535 | |
#57 | 0.0 | 0.6 | 2.0 이하 |
#78 | 0.0 | ||
No.4 | 0.0 | ||
시험방법(KS F) | 2580-02' |
구 분 | #57, #78, No.1 (에이징:3개월) | #57, #78, No.1 (에이징 미처리) | 시험기준 |
마모감량(%) | 32.9 | 25.6 | 35 이하 |
구 분 | 전기로 산화슬래그 재생골재 (에이징) | 전기로 슬래그골재 재생골재 (에이징 미처리) | ||||
#57 | #78 | No.1 | #57 | #78 | No.1 | |
손실무게 백분율(%) | 1.4 | 2.1 | 2.7 | 2.6 | 3.3 | 3.8 |
시험기준(KS F 2507) | 12% 이하 |
구 분 | 전기로 산화슬래그 골재 (에이징) | 전기로 산화슬래그 골재 (에이징 미처리) | 시방기준 (도로공사 시방서) | ||
#57 | #78 | #57 | #78 | ||
편평 및 세장편 함유량(%) | 6.0 | 1.7 | 7.2 | 2.5 | 20% 이하 |
시험 항목 | 결과 | 시험방법 | |
화학분석 (%) | SiO2 | 20.4 | KS M 0043 : 2004 (XRF 분석) |
Fe2O3 | 38.2 | ||
Al2O3 | 9.0 | ||
CaO | 29.6 | ||
MgO | 6.3 | ||
K2O | 0.16 |
구 분 | 시 험 법 | |||
기준치(mg/L) | TCLP(미국) :EPA 1311 | 기준치(mg/L) | KOEP(한국) :폐기물공정시험법 | |
Pb | 2.0 〉 | 0.28 | 3.0 〉 | 불검출 |
Cd | 1.0 〉 | 0.02 | 0.3 〉 | 불검출 |
Cr | 2.0 〉 | 0.07 | 1.5 〉 | 0.02 |
Cu | - | 0.02 | 3.0 〉 | 0.02 |
Hg | 0.2 〉 | 불검출 | 0.005 〉 | 불검출 |
As | 5.0 〉 | 불검출 | 1.5 〉 | 불검출 |
Zn | - | 3.39 | - | 0.07 |
Ni | - | 0.08 | - | 0.03 |
Claims (1)
- 전기로에서 발생된 슬래그 중 산화슬래그를 선별한 후 야적한 다음 에이징처리하는 준비단계와; 상기 준비단계에서 에이징 처리된 산화슬래그를 굴삭기를 이용하여 파쇄하는 굴삭파쇄단계와; 상기 굴삭파쇄단계에서 파쇄된 산화슬래그를 호퍼에 장입하는 호퍼장입단계와; 상기 호퍼에 장입된 산화슬래그를 제1호퍼에 설치된 300mm 스크린에 통과시켜 선별되는 300mm 미만의 산화슬래그를 이송컨베이어로 배출하는 호퍼배출단계와; 상기 호퍼배출단계에서 300mm 스크린을 통과하지 못한 산화슬래그를 수거하여 파쇄하여 상기 제1호퍼에 다시 장입시키는 호퍼재장입단계와;상기 이송컨베이어로 이송되는 산화슬래그에 포함된 불순물을 선별하는 수선단계와; 불순물이 제거된 상기 산화슬래그를 40mm 스크린을 이용하여 40mm 이상 또는 40mm 미만 크기의 산화슬래그로 선별하는 제1차 선별단계와; 상기 제1차 선별단계에서 40mm 이상 크기로 분류된 산화슬래그를 조 크러셔를 이용하여 파쇄하는 조 크러셔 파쇄단계를 포함하는 산화슬래그 재활용 시스템에 있어서,상기 조 크러셔 파쇄단계에서 파쇄된 산화슬래그를 제2호퍼에 저장하는 호퍼 저장단계와;상기 제2호퍼에 저장된 산화슬래그를 로드밀 장치에 투입하여 분쇄하는 로드밀 분쇄단계와;상기 로드밀 분쇄단계에서 분쇄된 산화슬래그를 75mm 스크린 및 40mm 스크린으로 구성되는 2중 선별수단을 이용하여 40mm 미만, 40 ~ 75mm 또는 75mm 이상 크기의 산화슬래그로 선별하는 제2차 선별단계와;상기 제1차 선별단계 및 제2차 선별단계에서 40mm 미만의 크기로 분류된 산화슬래그를 제1자선기에 투입하여 산화슬래그에 포함된 철을 분리하여 40mm 미만 크기를 갖는 재생골재를 생성시키는 소(小)재생골재 생성단계와;상기 제2차 선별단계에서 40 ~ 75mm 크기로 분류된 산화슬래그를 제2자선기에 투입하여 산화슬래그에 포함된 철을 분리하여 40 ~ 75mm 크기를 갖는 재생골재를 생성시키는 중(中)재생골재 생성단계와;상기 제2차 선별단계에서 75mm 이상 크기로 분류된 산화슬래그를 제3자선기에 투입하여 산화슬래그에 포함된 철을 분리하여 75mm 이상의 크기를 갖는 재생골재를 생성시키는 대(大)재생골재 생성단계와;상기 소(小)재생골재 생성단계 및 중(中)재생골재 생성단계에서 분리된 철을 로드밀에 투입하여 분쇄하는 회수철 분쇄단계와;상기 회수철 분쇄단계에서 분쇄된 회수철을 제4자선기에 투입한 다음, 불순물과 분리하여 회수철을 얻어내는 철획득 단계와;상기 철획득 단계에서 회수된 회수철을 5mm 스크린을 이용하여 5mm 미만 크기의 회수철과 5 ~ 75mm 크기의 회수철로 분류하는 중소(中小)회수철 생성단계와;상기 대(大)재생골재 생성단계에서 분리된 철을 회수하여 75mm 이상 크기의 회수철을 얻는 대(大)회수철 생성단계를 포함하여 이루어지는 것을 특징으로 하는 산화슬래그 재활용 시스템.
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101417335B1 (ko) | 2012-09-03 | 2014-08-07 | 주식회사 포스코 | 고로 수재 슬래그 및 파이넥스 수재 슬래그를 활용한 골재 제조방법 및 골재 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4747547A (en) | 1986-06-11 | 1988-05-31 | Nippon Jiryoku Senko Co., Ltd. | Process for the treatment of slag generated in an ironworks |
JPH01167266A (ja) * | 1987-12-24 | 1989-06-30 | Nkk Corp | スラグ微粉の製造方法 |
KR20020074430A (ko) * | 2002-08-02 | 2002-09-30 | 태원건설주식회사 | 제강 슬래그를 이용한 골재 제조방법 및 장치 |
JP2005274107A (ja) | 2004-03-26 | 2005-10-06 | Zhiqiang Zheng | 錬鋼炉の水力式スラグ処理方法 |
-
2006
- 2006-09-08 KR KR1020060086763A patent/KR100775420B1/ko active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4747547A (en) | 1986-06-11 | 1988-05-31 | Nippon Jiryoku Senko Co., Ltd. | Process for the treatment of slag generated in an ironworks |
JPH01167266A (ja) * | 1987-12-24 | 1989-06-30 | Nkk Corp | スラグ微粉の製造方法 |
KR20020074430A (ko) * | 2002-08-02 | 2002-09-30 | 태원건설주식회사 | 제강 슬래그를 이용한 골재 제조방법 및 장치 |
JP2005274107A (ja) | 2004-03-26 | 2005-10-06 | Zhiqiang Zheng | 錬鋼炉の水力式スラグ処理方法 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101417335B1 (ko) | 2012-09-03 | 2014-08-07 | 주식회사 포스코 | 고로 수재 슬래그 및 파이넥스 수재 슬래그를 활용한 골재 제조방법 및 골재 |
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