KR101347591B1 - Dredged soil stabilization method using eco-meterial - Google Patents
Dredged soil stabilization method using eco-meterial Download PDFInfo
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- KR101347591B1 KR101347591B1 KR1020130077031A KR20130077031A KR101347591B1 KR 101347591 B1 KR101347591 B1 KR 101347591B1 KR 1020130077031 A KR1020130077031 A KR 1020130077031A KR 20130077031 A KR20130077031 A KR 20130077031A KR 101347591 B1 KR101347591 B1 KR 101347591B1
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- 239000002689 soil Substances 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000006641 stabilisation Effects 0.000 title abstract 2
- 238000011105 stabilization Methods 0.000 title abstract 2
- 239000002893 slag Substances 0.000 claims abstract description 42
- 239000000843 powder Substances 0.000 claims abstract description 38
- 239000000463 material Substances 0.000 claims abstract description 21
- 239000010440 gypsum Substances 0.000 claims abstract description 18
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 18
- 239000011575 calcium Substances 0.000 claims abstract description 14
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 13
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000007711 solidification Methods 0.000 claims abstract description 11
- 230000008023 solidification Effects 0.000 claims abstract description 11
- 230000008569 process Effects 0.000 claims abstract description 10
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 20
- 239000000292 calcium oxide Substances 0.000 claims description 16
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 11
- 238000006477 desulfuration reaction Methods 0.000 claims description 10
- 230000023556 desulfurization Effects 0.000 claims description 10
- 239000000571 coke Substances 0.000 claims description 7
- 239000010802 sludge Substances 0.000 claims description 7
- 239000006227 byproduct Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000002006 petroleum coke Substances 0.000 abstract description 14
- 238000010521 absorption reaction Methods 0.000 abstract description 6
- 238000001035 drying Methods 0.000 abstract description 5
- 239000000021 stimulant Substances 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 230000020169 heat generation Effects 0.000 abstract description 2
- 239000003818 cinder Substances 0.000 abstract 4
- 239000004035 construction material Substances 0.000 abstract 1
- 230000000704 physical effect Effects 0.000 abstract 1
- 235000012255 calcium oxide Nutrition 0.000 description 13
- 239000004568 cement Substances 0.000 description 7
- 239000002994 raw material Substances 0.000 description 7
- 239000003513 alkali Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000000638 stimulation Effects 0.000 description 3
- 235000019738 Limestone Nutrition 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 229910021653 sulphate ion Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910021532 Calcite Inorganic materials 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000004936 stimulating effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 239000010920 waste tyre Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/02—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only
- C09K17/06—Calcium compounds, e.g. lime
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
-
- 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
- C04B28/18—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 mixtures of the silica-lime type
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/02—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B2101/00—Type of solid waste
- B09B2101/30—Incineration ashes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2103/00—Civil engineering use
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- Ceramic Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatment Of Sludge (AREA)
Abstract
Description
본 발명은 친환경 고화재를 이용한 준설토 고화방법에 관한 것으로, 더욱 상세하게는 고칼슘 소각재를 주원료로 사용하고 자극제로서 TDF 소각재와 슬래그 미분말 및 페트로 코우크스 탈황석고를 포함하는 친환경 고화재를 활용하여 고흡수성 및 내부발열을 유도함은 물론 건조 및 양생공정을 생략함으로써 준설토를 고효율 친환경적으로 고화할 수 있도록 하는 친환경 고화재를 이용한 준설토 고화방법에 관한 것이다.
The present invention relates to a dredged soil solidification method using an eco-friendly solidified fire, more specifically, using a high calcium incinerator ash as a main raw material, and using a high-absorbent eco-friendly solidified material including TDF incinerator and slag fine powder and petroleum coke desulfurized gypsum as a stimulant And it relates to a method of solidifying the dredged soil using environmentally friendly solidified material to induce internal heat generation, as well as to eliminate dredging and curing process, high efficiency and environmentally friendly.
일반적으로 고화재는 항만 개발에 따른 준설 및 하천 준설로 발생하는 준설토를 고화시켜 성토재 또는 연약지반 처리용 등으로 활용할 수 있도록 유도한다.In general, solidified materials solidify dredged soils generated by dredging and river dredging according to port development, and induce them to be used for the treatment of landfill material or soft ground.
그러나 종래의 고화재는 준설토에 함유된 유기물과 그 유기물이 부패할 때 발생하는 부식산의 영향으로 시멘트계 고화재의 고화반응이 저하되고, 준설토 입자로 인해 고화체 내의 공기량 감소에 의한 동결 융해 저항성 감소 및 준설토 고화 후 건조수축에 의한 체적감소와 균열 등이 발생하는 심각한 문제점을 갖게 되었다.However, in the conventional solidified material, the solidification reaction of cement-based solidified material is lowered due to the influence of organic matter contained in dredged soil and the organic material decaying. After solidification of dredged soil, there is a serious problem of volume reduction and cracking caused by dry shrinkage.
아울러 시멘트계의 고화재 경우에는 고온에서 소성하여 제조되므로 경제적인 비용이 가중될 뿐만 아니라 중금속이 잔존하는 심각한 문제점을 갖게 되었다.In addition, in the case of cement-based solidified material is produced by firing at a high temperature not only adds to the economic cost but also has a serious problem that the heavy metal remains.
또한, 제조공정이 매우 복잡하고 원료의 전처리에 많은 비용이 수반되며, 여러 가지 원료를 동시에 사용해야하기 때문에 원료의 물리 화학적 변화에 따른 배합의 선정이 어려운 제조상의 문제점을 갖게 되었다.
In addition, since the manufacturing process is very complicated, and the pretreatment of the raw material is expensive, and various raw materials must be used at the same time, it is difficult to select a formulation according to the physical and chemical changes of the raw material.
따라서 본 발명은 상기와 같은 종래의 문제점을 해결하기 위해 안출한 것으로서, SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art,
본 발명은 고칼슘 소각재를 주원료로 사용하고 자극제로서 TDF 소각재와 슬래그 미분말 및 페트로 코우크스 탈황석고를 포함하는 친환경 고화재를 활용하여 고흡수성 및 내부발열을 유도함은 물론 건조 및 양생공정을 생략함으로써 준설토를 고효율 친환경적으로 고화할 수 있는 친환경 고화재를 이용한 준설토 고화방법을 제공함에 목적이 있다.
The present invention utilizes high calcium incinerator ash as a main raw material and utilizes eco-friendly solidified materials including TDF incinerator ash, slag fine powder and petroleum coke desulfurized gypsum as stimulants to induce superabsorbency and internal heating as well as omit dredged soil by eliminating drying and curing processes. The purpose of the present invention is to provide dredged soil solidification method using eco-friendly solidified material which can be solidified with high efficiency and eco-friendly.
상기한 바와 같은 목적을 달성하기 위한 본 발명은 The present invention for achieving the object as described above
친환경 고화재를 이용한 준설토 고화방법에 있어서, In the dredged soil solidification method using eco-friendly solidified material,
상기 친환경 고화재는 고칼슘 소각재 100중량부에 대하여 TDF 소각재 30 내지 100 중량부와, 슬래그 미분말 10 내지 100 중량부와, 페트로 코우크스 탈황석고 10 내지 80 중량부를 포함하는 것을 특징으로 한다.The eco-friendly solidified material is characterized in that it comprises 30 to 100 parts by weight of TDF incinerator, 10 to 100 parts by weight of fine slag powder, and 10 to 80 parts by weight of Petro coke desulfurized gypsum with respect to 100 parts by weight of high calcium incinerator.
여기서 상기 고칼슘 소각재는 로내탈황방식 석탄연소 보일러에서 발생하는 산화칼슘함량이 20% 이상인 소각재와, 제지 공정부산물인 제지 슬러지를 소각하는 보일러에서 발생하는 산화칼슘함량이 20% 이상인 제지슬러지 소각재인 것을 특징으로 한다.Here, the high calcium incineration ash is an incineration ash having a calcium oxide content of 20% or more generated in a furnace desulfurization type coal-fired boiler, and a paper sludge incineration ash having a calcium oxide content of 20% or more generated in a boiler for incineration of paper sludge which is a by-product of papermaking process. It is done.
또한, 상기 슬래그 미분말은 슬래그 미분말, 괴재슬래그 미분말, 전로슬래그 미분말, 스테인레스 슬래그 미분말, 동 슬래그미분말, 연 슬래그미분말 중 선택된 어느 하나이거나 둘 이상의 혼합물인 것을 특징으로 한다.In addition, the slag powder is characterized in that any one or a mixture of two or more selected from fine slag powder, fine slag fine powder, converter slag fine powder, stainless slag fine powder, copper slag fine powder, soft slag fine powder.
특히 상기 페트로 코우크스 탈황석고는 로내탈황방식 페트로 코우크스 연소 보일러에서 발생하는 산화칼슘함량이 20% 이상인 것을 특징으로 한다.
In particular, the petroleum coke desulfurization gypsum is characterized in that the calcium oxide content generated in the furnace desulfurization type petroleum coke combustion boiler is 20% or more.
본 발명은 고흡수성 및 내부발열을 유도함은 물론 건조 및 양생공정을 생략함으로써 준설토를 고효율 친환경적으로 고화할 수 있는 효과를 갖는다.The present invention has the effect of inducing high efficiency and environmentally friendly dredged soil by omitting the drying and curing process as well as inducing high absorption and internal heating.
특히 본 발명은 고칼슘 소각재를 주원료로 사용하고 자극제로서 TDF 소각재와 슬래그 미분말 및 페트로 코우크스 탈황석고를 활용하여 준설토를 경제적이고 성능이 향상된 물성의 토목재료 또는 연약지반 처리용으로 사용할 수 있는 효과를 갖는다.In particular, the present invention has the effect of using the high calcium incineration ash as a main raw material and using dredged soil for economical and improved properties of civil engineering material or soft ground by using TDF incineration ash, slag fine powder, and petroleum coke desulfurization gypsum as a stimulant. .
또한, 본 발명은 준설토를 재활용할 수 있음은 물론 환경보호에 이바지할 수 있는 효과를 갖는다.
In addition, the present invention has the effect that can contribute to environmental protection as well as recycling dredged soil.
상기한 바와 같은 목적을 달성하기 위한 본 발명은The present invention for achieving the object as described above
친환경 고화재를 이용한 준설토 고화방법에 있어서, In the dredged soil solidification method using eco-friendly solidified material,
상기 친환경 고화재는 고칼슘 소각재 100중량부에 대하여 TDF 소각재 30 내지 100 중량부와, 슬래그 미분말 10 내지 100 중량부와, 페트로 코우크스 탈황석고 10 내지 80 중량부를 포함한다.The eco-friendly solidified material includes 30 to 100 parts by weight of TDF incinerator, 10 to 100 parts by weight of fine slag powder, and 10 to 80 parts by weight of petrol coke desulfurized gypsum with respect to 100 parts by weight of high calcium incinerator.
본 발명에서 상기 고칼슘 소각재는 다량 함유된 Free-CaO 및 FeO성분에 의해 수분과 접촉시 높은 발열온도와 흡수능력이 뛰어난 장점이 있어 일반적인 고화재의 발열제 및 알칼리 자극제로 사용되는 생석회와 경소백운석 등을 대체할 수 있다.In the present invention, the high-calcium incinerator has a high exothermic temperature and absorption ability when contacted with moisture by the free-CaO and FeO components contained in a large amount, such as quicklime and light dolomite, which are used as heat generators and alkali stimulants of general solids. Can be replaced.
여기서 상기 고칼슘 소각재는 로내탈황방식 석탄연소 보일러에서 발생하는 산화칼슘함량이 20% 이상인 소각재와, 제지 공정부산물인 제지 슬러지를 소각하는 보일러에서 발생하는 산화칼슘함량이 20% 이상인 제지슬러지 소각재를 사용하였다.Here, the high calcium incineration ash was used as an incineration ash containing 20% or more of calcium oxide produced in a furnace desulfurization type coal-fired boiler and a paper sludge incineration ash containing 20% or more of calcium oxide produced in a boiler for incineration of paper sludge, which is a by-product of papermaking process. .
한편, 상기 TDF(Tire Derived Feul) 소각재는 석탄과 폐타이어와 석회석을 혼합 연소하는 로내탈황방식(유동층) 소각로에서 발생하는 부산물로써,On the other hand, the TDF (Tire Derived Feul) incineration ash is a by-product generated in the furnace desulfurization (fluidized bed) incinerator in which coal, waste tire, and limestone are mixed and burned.
이때 TDF 소각재에 다량 함유된 산화칼슘은 물과 반응하여 흡수, 발열 및 팽창하여 수산화칼슘이 되는데, 이에 대한 반응식은 아래와 같다.At this time, calcium oxide contained in a large amount in the TDF incinerator reacts with water to absorb, exothermic, and expand to become calcium hydroxide. The reaction formula is as follows.
CaO+ H2O->Ca(OH)2+15.6kcal mol-1CaO + H2O-> Ca (OH) 2 + 15.6kcal mol-1
이때 TDF 소각재의 경우 타이어의 불완전 연소물인 카본 및 유분이 다량존재하여, 낮은 비중특성 때문에 시멘트 콘크리트에 사용되면 카본 및 유분이 콘크리트 표면으로 떠올라 콘크리트의 혼화재로 사용할 수 없으나, At this time, in case of TDF incinerator, carbon and oil, which are incomplete combustion products of tires, are largely present, and when used in cement concrete due to low specific gravity, carbon and oil may float to the concrete surface and cannot be used as admixture for concrete.
반대로 TDF 소각재가 가지고 있는 산화칼슘 성분에 의한 흡수 발열 및 팽창의 화학적 반응은 시멘트의 단점인 수축을 보상하고, 아스팔트 혼합물 내의 수분을 신속하게 흡수하여 연약지반을 신속히 안정시키는 효과가 있다. On the contrary, the chemical reaction of absorption exotherm and expansion by calcium oxide component of TDF incinerator compensates for the shrinkage, which is a disadvantage of cement, and quickly absorbs the moisture in the asphalt mixture to stabilize the soft ground.
이때 상기 TDF 소각재가 30 중량부 미만에서는 이때 상기 TDF 소각재가 30 중량부 미만에서는 TDF 소각재 중의 산화칼슘이 연약지반의 수분을 흡수하여 생석회(소석회로 됨)로 전이되는 과정에서 발생하는 흡수와 발열이 충분하지 않아 소정의 목적을 달성할 수 없으며, At this time, when the TDF incinerator is less than 30 parts by weight, at this time, when the TDF incinerator is less than 30 parts by weight, the absorption and heat generated from the process of calcium oxide in the TDF incinerator is absorbed by the soft ground and converted to quicklime (calcite). Not enough to achieve a given purpose,
반대로 상기 TDF 소각재가 100 중량부 이상이면 TDF 소각재에 포함된 유분과 미연소 탄소성분이 지나치게 많게 되어 고화 준설토의 강도발현에 좋지 않은 영향을 미치게 된다.On the contrary, if the TDF incinerator is 100 parts by weight or more, the oil and unburned carbon components contained in the TDF incinerator are excessively large, which adversely affects the strength development of the solidified dredged soil.
따라서 본 발명에서 상기 TDF 소각재는 30 내지 100 중량부를 사용함으로써 준설토의 수분을 흡수하여 고화작용을 촉진할 수 있다.Therefore, in the present invention, the TDF incineration material may promote the solidification by absorbing the water of dredged soil by using 30 to 100 parts by weight.
한편, 상기 슬래그 미분말은 선철의 제련시에 부산물로서 발생하는 고온용융상태의 슬래그를 물로 급랭처리한 수쇄슬래그를 건조 및 분쇄하여 제조한 것으로, 반응성이 높아 시멘트용 슬래그나 시멘트 및 콘크리트용 혼화재료로 사용되고 있다.On the other hand, the slag fine powder is produced by drying and crushing the hydrothermal slag quenched with hot molten slag generated as a by-product during the smelting of pig iron, it is a high reactivity as a cement slag or a mixed material for cement and concrete It is used.
이때 슬래그 미분말은 그 자체는 경화하는 성질이 미약하나, 알칼리에 의해서 경화(잠재수경성)함은 물론 시멘트 수화생성물인 수산화칼슘과 황산염의 작용에 의해서 경화가 촉진되어 압축강도를 향상시킬 수 있다.At this time, the fine slag powder itself is hard to harden, but harden by alkali (potential hardening), as well as by the action of calcium hydroxide and sulfate salts of cement hydration products can be promoted to improve the compressive strength.
그리고 슬래그 미분말은 슬래그 미분말, 괴재슬래그 미분말, 전로슬래그 미분말, 스테인레스 슬래그 미분말, 동 슬래그미분말, 연 슬래그미분말 중 선택된 어느 하나이거나 둘 이상의 혼합물을 사용할 수 있다.The slag fine powder may be any one selected from slag fine powder, finely divided slag fine powder, converter slag fine powder, stainless slag fine powder, copper slag fine powder and soft slag fine powder or a mixture of two or more thereof.
본 발명에서 상기 슬래그 미분말은 10 중량부 이하일 경우에는 충분한 수화물을 만들지 않아 소요하는 강도를 발현할 수 없으며, 반대로 100중량부 이상일 경우, 준설 슬러지 고화토가 요구하는 일반 토양정도의 강도를 초과하여 너무 높은 강도를 발현하기 때문에 준설고화토의 요구 성능을 달성할 수 없게 된다.In the present invention, when the slag fine powder is not more than 10 parts by weight, it does not produce sufficient hydrate, it can not express the required strength, on the contrary, if it is more than 100 parts by weight, too much exceed the strength of the general soil required for dredged sludge solidified soil Since the high strength is expressed, the required performance of the dredged clay is not achieved.
따라서 본 발명에서 상기 슬래그 미분말은 준설토를 인공토양으로 만드는데 소요되는 강도를 발현하는 결합재로서의 역할을 수행할 수 있다.Therefore, in the present invention, the slag fine powder may serve as a binder expressing the strength required to make the dredged soil into artificial soil.
그리고 상기 페트로 코우크스 탈황석고는 페트로 코우크스를 원료로 하는 보일러에서 노내 탈황을 위해 석회석을 혼소하는 과정에서 페트로 코우크스에 포함되어 있는 황 성분과 석회석이 고온에서 탈탄산된 CaO 성분이 반응하여 생성된 분진과 같은 입자상 석고 물질로서 pH가 11.5이상의 강알칼리 물질이다. The coke desulfurized gypsum is produced by reacting sulfur components contained in the pet coke and CaO dehydrated at a high temperature in the process of mixing limestone for desulfurization in a furnace in a boiler made of coke coke. Particulate gypsum material, such as dust, which is a strong alkali with a pH above 11.5.
특히 상기 석고에 포함된 황산염과 높은 pH가 황산염자극 및 pH에 따른 알칼리 자극을 슬래그 미분말에 가하게 되면 슬래그 미분말이 활성화되어 잠재수경성 반응을 개시하여 고결강도를 발현한다. In particular, when the sulphate and high pH contained in the gypsum are applied to the stimulation of sulphate and alkali stimulation according to the pH to the slag fine powder, the fine slag powder is activated to initiate latent hydraulic reactions to express high grain strength.
이때 상기 슬래그 미분말과 페트롤 코우크스 탈황석고의 황산염 자극제의 수화반응은 초기 재령에서 다량의 에트린자이트를 골격으로 개시되며 이와 동시에 생성된 C-S-H겔에 의해 이루어진다. At this time, the hydration reaction of the fine slag powder and the sulfate stimulant of the petroleum coke desulfurized gypsum is initiated by a large amount of ethrinzite as a skeleton at an early age and is made by a C-S-H gel produced at the same time.
또한 C-S-H겔은 에트린자이트를 감싸며 재령이 경과함에 따라 생성량이 지In addition, C-S-H gel surrounds the ethrinzite, and the amount of formation is increased with age.
속적으로 증가하고 C-S-H겔이 경화된 페이스트의 공극을 밀실하게 채우게 되어 에트린자이트와 치밀한 네트워크식 망상구조를 형성하면서 지속적으로 높은 강도발현을 한다.It rapidly increases and the C-S-H gel tightly fills the pores of the hardened paste, forming a dense networked network with ethrinzite, and continuously expressing high strength.
이때 상기 페트로 코우크스 탈황석고는 로내탈황방식 페트로 코우크스 연소 보일러에서 발생하는 산화칼슘함량이 20% 이상인 것을 사용하였다.At this time, the petroleum coke desulfurization gypsum was used that the calcium oxide content generated in the furnace desulfurization type petroleum coke combustion boiler 20% or more.
따라서 본 발명에서 페트로 코우크스 탈황석고는 10 내지 80 중량부를 사용함으로써 소기의 목적을 달성할 수 있는데, Therefore, in the present invention, by using the coke desulfurized gypsum 10 to 80 parts by weight can achieve the desired purpose,
이때 상기 페트로 코우크스 탈황석고가 10 중량부 이하일 경우에는 슬래그 미분말을 자극하기 위한 충분한 량이 되지 않아 소정의 강도가 발현되지 않으며, 반대로 상기 페트로 코우크스 탈황석고가 80중량부 이상이면 필요이상의 알칼리 자극능력을 갖게 되어 상대적으로 이와 반응할 슬래그 미분말의 양이 적어지는 결과가 발생하여 강도가 저하되는 문제가 발생하게 된다. At this time, when the petroleum coke desulphurized gypsum is 10 parts by weight or less, it is not a sufficient amount for stimulating the fine slag powder, and a predetermined strength is not expressed. On the contrary, when the petroleum coke desulphurized gypsum is 80 parts by weight or more, the alkali stimulation ability is more than necessary. It has a result that the amount of fine slag powder to react with the relatively less occurs, resulting in a problem that the strength is lowered.
따라서 본 발명은 고칼슘 소각재를 주원료로 사용하고 자극제로서 TDF 소각재와 슬래그 미분말 및 페트로 코우크스 탈황석고를 포함하는 고화재를 활용하여 고흡수성 및 내부발열을 유도함은 물론 건조 및 양생공정을 생략함으로써 준설토를 고효율 친환경적으로 고화할 수 있다.Therefore, the present invention uses a high calcium incinerator ash as a main raw material and by using a solidified material including TDF incinerator ash, slag fine powder and petroleum coke desulphurized gypsum as a stimulant to induce high absorption and internal heating, as well as omission of the drying and curing process dredged soil High efficiency and eco-friendly solidification.
이처럼 상기와 같이 본 발명의 실시한 예에 대하여 상세히 설명하였으나, 본 발명의 권리범위는 이에 한정되지 않으며, 본 발명의 실시한 예와 실질적으로 균등의 범위에 있는 구성까지 본 발명의 권리범위에 포함됨은 당연하다.As described above, the embodiment of the present invention has been described in detail, but the scope of the present invention is not limited thereto, and it is natural that the scope of the present invention is included in the scope of the present invention to a configuration that is substantially equivalent to the embodiment of the present invention. Do.
Claims (4)
상기 친환경 고화재는 칼슘 소각재 100중량부에 대하여 TDF 소각재 30 내지 100 중량부와, 슬래그 미분말 10 내지 100 중량부와, 페트로 코우크스 탈황석고 10 내지 80 중량부를 포함하되, 상기 칼슘 소각재는 로내탈황방식 석탄연소 보일러에서 발생하는 산화칼슘함량이 20중량% 이상인 소각재와, 제지 공정부산물인 제지 슬러지를 소각하는 보일러에서 발생하는 산화칼슘함량이 20중량% 이상인 제지슬러지 소각재이고, 상기 슬래그 미분말은 슬래그 미분말, 괴재슬래그 미분말, 전로슬래그 미분말, 스테인레스 슬래그 미분말, 동 슬래그미분말, 연 슬래그미분말 중 선택된 어느 하나이거나 둘 이상의 혼합물이며, 상기 페트로 코우크스 탈황석고는 로내탈황방식 페트로 코우크스 연소 보일러에서 발생하는 산화칼슘함량이 20중량% 이상인 것을 특징으로 하는 친환경 고화재를 이용한 준설토 고화방법.In the dredged soil solidification method using eco-friendly solidified material,
The eco-friendly solidified material includes 30 to 100 parts by weight of TDF incinerator, 10 to 100 parts by weight of fine slag powder, and 10 to 80 parts by weight of petrol coke desulfurized gypsum, based on 100 parts by weight of the calcium incinerator, wherein the calcium incinerator is a furnace desulfurization method. Incineration ash containing 20% by weight or more of calcium oxide produced in a coal-fired boiler, and paper sludge ash incineration containing 20% by weight or more of calcium oxide produced in a boiler for incineration of paper sludge, which is a by-product of papermaking process, wherein the slag fine powder is a slag fine powder, Aggregate slag fine powder, converter slag fine powder, stainless slag fine powder, copper slag fine powder, soft slag fine powder or any one or more mixtures of two or more thereof. Is 20% by weight or more How solidified dredged with warning fire.
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| KR101200282B1 (en) * | 2010-11-03 | 2012-11-12 | 주식회사 씨엠디기술단 | Soil solidifier |
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