KR101376076B1 - composition and it's manufacture method of sacrificial concrete for ex-vessel core cooling system - Google Patents

composition and it's manufacture method of sacrificial concrete for ex-vessel core cooling system Download PDF

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KR101376076B1
KR101376076B1 KR1020120087366A KR20120087366A KR101376076B1 KR 101376076 B1 KR101376076 B1 KR 101376076B1 KR 1020120087366 A KR1020120087366 A KR 1020120087366A KR 20120087366 A KR20120087366 A KR 20120087366A KR 101376076 B1 KR101376076 B1 KR 101376076B1
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core
strontium
weight
concrete composition
oxide
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KR20140021248A (en
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김병섭
강용철
이종호
김용수
서정수
김문수
송진호
김환열
성호제
윤선홍
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한국수력원자력 주식회사
한국전력기술 주식회사
한국원자력연구원
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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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
    • 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
    • C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/12—Casings; Linings; Walls; Roofs incorporating cooling arrangements

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • General Engineering & Computer Science (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

본 발명은 노심용융물의 분출과 동시에 코어캐쳐 내에 용융물을 수용하여 간접 냉각을 수행하는 형태의 코어캐쳐 상부에 희생 콘크리트 조성물을 도포함으로써, 노심용융물의 온도 감소 및 퍼짐을 향상시키고, 용융물의 층역전 현상을 발생시켜 코어캐쳐 용기의 구조건전성을 위협하는 열집중 현상을 제거하고, 수소발생량을 저감하는 기능을 수행하도록 한 노외 노심용융물 냉각설비 희생 콘크리트 조성물 및 이의 제조방법을 제공하는데 그 목적이 있다.
상기한 목적을 달성하기 위한 본 발명에 따른 노외 노심용융물 냉각설비 희생 콘크리트 조성물은 스트론튬 헥사퍼라이트(Strontium Hexaferrite, SrFe12O19)가 68∼82중량%, 알루미늄 시멘트가 18∼32중량%로 구성됨을 특징으로 한다.
또한, 상기한 목적을 달성하기 위한 본 발명에 따른 노외 노심용융물 냉각설비 희생 콘크리트 조성물 제조방법은 산화스트론튬(SrO)과 삼산화이철(Fe2O3)을 이용하여 스트론튬 헥사퍼라이트(Strontium Hexaferrite, SrFe12O19)를 만들고, 산화칼슘(CaO)과 산화알루미늄(Al2O3 )으로 구성된 시멘트를 조합하여 제조하는 방법으로,
상기 삼산화이철(Fe2O3)과 탄산스트론튬(SrCO3)을 1:0.154의 비율로 섞어 스트론튬 헥사퍼라이트(Strontium Hexaferrite, SrFe12O19)를 소성과정을 통해 제조한 후에, 산화알루미늄(Al2O3) 85 중량%, 산화칼슘(CaO) 15 중량%로 구성된 상용시멘트와 1:0.327로 혼합하여 고온 압축성형을 통해 희생 콘크리트를 제조함을 특징으로 한다.The present invention improves the temperature reduction and spread of the core melt by applying the sacrificial concrete composition on the core catcher in the form of accommodating the melt in the core catcher and performing indirect cooling at the same time as the ejection of the core melt. It is an object of the present invention to provide an off-core core melt cooling equipment sacrificial concrete composition and a method of manufacturing the same to remove the heat concentration phenomenon that threatens the structural integrity of the core catcher container to reduce the amount of hydrogen generated.
The off-core core melt cooling equipment sacrificial concrete composition according to the present invention for achieving the above object is 68-82% by weight of strontium hexaperrite (SrFe 12 O 19 ), 18-32% by weight of aluminum cement. It features.
In addition, the method for producing an off-core core melt cooling facility sacrificial concrete composition according to the present invention for achieving the above object is strontium hexaperrite (Strontium Hexaferrite, SrFe 12 ) using strontium oxide (SrO) and ferric trioxide (Fe 2 O 3 ) O 19 ), and a method of manufacturing by combining cement consisting of calcium oxide (CaO) and aluminum oxide (Al 2 O 3 ),
After mixing the ferric trioxide (Fe 2 O 3 ) and strontium carbonate (SrCO 3 ) in a ratio of 1: 0.154, strontium hexaperrite (Strontium Hexaferrite, SrFe 12 O 19 ) is manufactured through a calcination process, aluminum oxide (Al 2 O 3 ) mixed with a commercial cement composed of 85% by weight, 15% by weight of calcium oxide (CaO) 1: 0.327, characterized in that the sacrificial concrete is produced through high-temperature compression molding.

Description

노외 노심용융물 냉각설비 희생 콘크리트 조성물 및 이의 제조방법{composition and it's manufacture method of sacrificial concrete for ex-vessel core cooling system}Off-core core melt cooling equipment Sacrificial concrete composition and its preparation method {composition and it's manufacture method of sacrificial concrete for ex-vessel core cooling system}

본 발명은 노외 노심용융물 냉각설비 희생 콘크리트 조성물 및 이의 제조방법에 관한 것으로, 특히 역지붕 형태의 노심용융물 수용공간을 갖추고 있는 APR1400 코어캐쳐의 상부에 설치되며, 노심용융물의 노외 분출과 동시에 코어캐쳐 내에 노심용융물을 수용하고, 노심용융물과의 혼합으로 노심용융물 온도 감소와 노심용융물을 잘 퍼지게 하여, 코어캐쳐 하부의 냉각유로와 코어캐쳐 상부에 수용된 노심용융물 간의 열교환에 의한 냉각수의 자연순환에 의한 노심용융물 냉각으로 노외 노심용융물 냉각설비를 장기적으로 구조건전성을 유지하기 위한 희생 콘크리트 조성물 및 이의 제조방법에 관한 것이다.The present invention relates to an off-core core melt cooling facility sacrificial concrete composition and a method of manufacturing the same, in particular installed on top of the APR1400 core catcher having a core melt receiving space of the reverse roof type, and at the same time in the core catcher at the same time The core melt is accommodated in the core melt and mixed with the core melt to reduce the core melt temperature and spread the core melt well, and the core melt due to the natural circulation of the cooling water by heat exchange between the cooling flow path under the core catcher and the core melt contained in the core catcher. The present invention relates to a sacrificial concrete composition for maintaining long-term structural integrity of an off-core core melt cooling system by cooling, and a method of manufacturing the same.

일반적으로 러시아에서 개발한 VVER1000 코어캐쳐는 원자로 용기 하부 공동부분에 대용량 도가니 형태의 Core Catcher Vessel을 설치하여 노심용융물을 수용, 냉각하는 구조로 되어 있다.In general, the VVER1000 core catcher developed in Russia is equipped with a core crucible vessel in the form of a large crucible at the bottom cavity of the reactor vessel to receive and cool the core melt.

여기서, 희생물질의 설치형태는 Core Catcher Vessel 안에 세라믹형태의 희생물질을 적층하는 방식이다.Here, the installation form of the sacrificial material is a method of stacking the sacrificial material of the ceramic form in the core catcher vessel.

희생물질은 삼산화이철(Fe2O3) 68.96중량%, 산화알루미늄(Al2O3) 29중량%, 이산화규소(SiO2) 1.9중량%, 가돌리늄(Gd2O3) 0.14중량%로 구성된 복합물질로 구성되어 있으며, 약 40-60톤 사용한다.The sacrificial material was composed of 68.96% by weight of ferric trioxide (Fe 2 O 3 ), 29% by weight of aluminum oxide (Al 2 O 3 ), 1.9% by weight of silicon dioxide (SiO 2 ), and 0.14% by weight of gadolinium (Gd 2 O 3 ) It is composed of material and uses about 40-60 tons.

희생물질의 복합물질 구성 목적은 금속 용융물층 하부에 형성되는 산화용융물의 밀도를 감소시켜 산화 용융물층이 금속 용융물층의 상부에 위치하게 하는 층역전 현상을 일으키기 위함이다.The purpose of constructing the composite material of the sacrificial material is to reduce the density of the oxidized melt formed under the metal melt layer so as to cause a layer reversal phenomenon in which the oxidized melt layer is positioned above the metal melt layer.

이를 통해 금속 용융물층에 의한 구조건전성을 위협할 수 있는 열집중(focusing effect)을 제거할 수 있다.Through this, it is possible to eliminate the focusing effect that may threaten the structural integrity caused by the metal melt layer.

그러나 코어캐쳐 도가니 안에 대량의 희생물질을 적층 설치에 따라 건설 편이성이 떨어지고, 지진과 같은 외부 충격으로 함몰 위험 등 구조건전성이 낮은 단점이 있다.However, there is a disadvantage in that construction convenience is reduced by stacking a large amount of sacrificial materials in the core catcher crucible, and the structural integrity is low, such as the risk of sinking due to an external shock such as an earthquake.

또한, 프랑스 아레바에서 개발한 EPR 코어캐쳐는 원자로 용기 파손시 노심용융물을 초기에 가두는 역할을 수행하는 Pre-Catcher와 장기적인 냉각을 수행하는 퍼짐 공간을 따로 갖춘 구조로 되어 있다.In addition, the EPR core catcher developed by Areva, France has a structure that has a pre-catcher that serves to initially trap core melt in case of reactor vessel breakage and a spread space for long-term cooling.

여기서, 희생물질의 설치형태는 Pre-Catcher에 50㎝ 두께의 콘크리트 형태 희생물질과 그 외부에 지르코니아(ZrO2) 성분의 보호물질을 사용하고 있고, 퍼짐 공간은 산화철(FeO)을 첨가한 콘크리트 형태의 희생물질을 사용하였다.Here, the installation form of the sacrificial material is a 50-cm-thick concrete sacrificial material and a zirconia (ZrO 2 ) protective material on the outside of the pre-Catcher, the spread space is a concrete form with iron oxide (FeO) added The sacrificial material of was used.

산화철은 용융물 내의 금속 우라늄(U)과 지르코늄(Zr)을 산화시켜 수소생성량을 감소시키고, 용융물의 퍼짐이 잘 되도록 용융물의 고화 온도와 점도를 낮추게 한다.Iron oxides oxidize the metal uranium (U) and zirconium (Zr) in the melt to reduce hydrogen production and to lower the solidification temperature and viscosity of the melt so that the melt spreads well.

또한, 희생 콘크리트에서 이산화규소(SiO2)의 농도를 높여 규산염(silicate) 형성률을 향상시키고, 용융물로부터 방사성 물질의 방출량을 감소시키도록 하였다.In addition, the concentration of silicon dioxide (SiO 2 ) in sacrificial concrete was increased to improve the rate of silicate formation and to reduce the amount of radioactive material released from the melt.

그러나 Pre-Catcher와 퍼짐 공간에 각각 다른 성분의 희생물질이 필요하고, 노심용융물을 여러 단계에 걸쳐 수용 및 냉각하는 과정이므로 노심용융물과 희생물질 반응의 불확실성이 다른 형태에 비해 비교적 높은 단점이 있다.However, there is a disadvantage that the uncertainty of the reaction between the core melt and the sacrificial material is relatively higher than that of other forms because the pre-catcher and the spreading space require sacrificial materials having different components, and the core melt is accommodated and cooled in several stages.

그리고 미국 GE에서 개발한 ESBWR BiMAC 코어캐쳐는 냉각 유로가 방사형으로 배치된 고깔형태의 공간에 노심용융물을 수용하여 냉각 유로와의 열교환을 통해 냉각하는 구조로 되어있다.The ESBWR BiMAC core catcher developed by GE in the United States has a structure in which core melt is accommodated in a solid space in which cooling channels are radially arranged and cooled by heat exchange with the cooling channels.

코어캐쳐에는 희생물질을 사용하지 않으며, 원자로 용기 하반구 파손시 용융물에 의한 Jet Impingement 대비를 위해 약 20㎝의 세라믹 지르코니아(Zr2) 층을 사용한다.The core catcher does not use sacrificial material, and a ceramic zirconia (Zr 2 ) layer of about 20 cm is used to prepare for jet impingement due to the melt in the lower half of the reactor vessel.

상기 지르코니아(Zr2) 층은 노심용융물로부터 하부의 냉각 유로 건전성을 유지시키게 하는 보호 내화(refractory)물질 역할만을 수행한다.The zirconia (Zr 2 ) layer serves only as a protective refractory material to maintain the integrity of the lower cooling flow path from the core melt.

노심용융물 온도 감소, 용융물 퍼짐 향상, 금속용융물층에 의한 열집중 현상을 방지하는 기능은 갖고 있지 않다. It does not have the function of reducing core melt temperature, improving melt spreading, and preventing heat concentration phenomenon by metal melt layer.

이에, 상기한 바와 같은 제문제점을 해결하기 위해 안출된 것으로, 노심용융물의 분출과 동시에 코어캐쳐 내에 용융물을 수용하여 간접 냉각을 수행하는 형태의 코어캐쳐 상부에 희생 콘크리트 조성물을 도포함으로써, 노심용융물의 온도 감소 및 퍼짐을 향상시키고, 용융물의 층역전 현상을 발생시켜 코어캐쳐 용기의 구조건전성을 위협하는 열집중 현상을 제거하고, 수소발생량을 저감하는 기능을 수행하도록 한 노외 노심용융물 냉각설비 희생 콘크리트 조성물 및 이의 제조방법을 제공하는데 그 목적이 있다.In order to solve the problems described above, the core melter is formed by applying a sacrificial concrete composition on top of the core catcher to perform indirect cooling by receiving the melt in the core catcher while simultaneously ejecting the core melt. Sacrificial concrete composition for off-core core melt cooling equipment which improves temperature reduction and spreading, removes heat concentration that threatens the structural integrity of core catcher vessel by generating layer reversal phenomenon of melt, and reduces hydrogen generation And to provide a method for the production thereof.

상기한 목적을 달성하기 위한 본 발명에 따른 노외 노심용융물 냉각설비 희생 콘크리트 조성물은 스트론튬 헥사퍼라이트(Strontium Hexaferrite, SrFe12O19)가 68∼82중량%, 알루미늄 시멘트가 18∼32중량%로 구성됨을 특징으로 한다.The off-core core melt cooling equipment sacrificial concrete composition according to the present invention for achieving the above object is 68-82% by weight of strontium hexaperrite (SrFe 12 O 19 ), 18-32% by weight of aluminum cement. It features.

또한, 상기한 목적을 달성하기 위한 본 발명에 따른 노외 노심용융물 냉각설비 희생 콘크리트 조성물 제조방법은 산화스트론튬(SrO)과 삼산화이철(Fe2O3)을 이용하여 스트론튬 헥사퍼라이트(Strontium Hexaferrite, SrFe12O19)를 만들고, 산화칼슘(CaO)과 산화알루미늄(Al2O3 )으로 구성된 시멘트를 조합하여 제조하는 방법으로,
상기 삼산화이철(Fe2O3)과 탄산스트론튬(SrCO3)을 1:0.154의 비율로 섞어 스트론튬 헥사퍼라이트(Strontium Hexaferrite, SrFe12O19)를 소성과정을 통해 제조한 후에, 산화알루미늄(Al2O3) 85 중량%, 산화칼슘(CaO) 15 중량%로 구성된 상용시멘트와 1:0.327로 혼합하여 고온 압축성형을 통해 희생 콘크리트를 제조함을 특징으로 한다.In addition, the method for producing an off-core core melt cooling facility sacrificial concrete composition according to the present invention for achieving the above object is strontium hexaperrite (Strontium Hexaferrite, SrFe 12 ) using strontium oxide (SrO) and ferric trioxide (Fe 2 O 3 ) O 19 ), and a method of manufacturing by combining cement consisting of calcium oxide (CaO) and aluminum oxide (Al 2 O 3 ),
After mixing the ferric trioxide (Fe 2 O 3 ) and strontium carbonate (SrCO 3 ) in a ratio of 1: 0.154, strontium hexaperrite (Strontium Hexaferrite, SrFe 12 O 19 ) is manufactured through a calcination process, aluminum oxide (Al 2 O 3 ) mixed with a commercial cement composed of 85% by weight, 15% by weight of calcium oxide (CaO) 1: 0.327, characterized in that the sacrificial concrete is produced through high-temperature compression molding.

이상에서 설명한 바와 같이, 본 발명에 따른 노외 노심용융물 냉각설비 희생 콘크리트 조성물 및 이의 제조방법은 다음과 같은 효과가 있다.As described above, the off-core core melt cooling equipment sacrificial concrete composition according to the present invention and its manufacturing method has the following effects.

첫째, 본 발명에 따른 노외 노심용융물 냉각설비 희생 콘크리트 조성물 및 이의 제조방법은 상부에 재배치된 노심용융물과의 반응으로 노심용융물의 온도를 낮춰, 코어캐쳐의 열적 부하를 감소시켜 코어캐쳐 구조물의 장기적 구조건전성을 유지시킬 수 있다.First, the off-core core melt cooling equipment sacrificial concrete composition according to the present invention and a method for manufacturing the core melter by lowering the temperature of the core melt in response to the core melt relocated at the top, reducing the thermal load of the core catcher long-term structure of the core catcher structure Soundness can be maintained.

둘째, 본 발명에 따른 노외 노심용융물 냉각설비 희생 콘크리트 조성물 및 이의 제조방법은 노심용융물과의 반응으로 용융물의 고화온도와 점도를 감소시켜 노심용융물의 퍼짐(spreading)을 향상하여 코어캐쳐 내 국부적인 열부하 상승을 방지한다. Second, the off-core core melt cooling facility sacrificial concrete composition and a method of manufacturing the same according to the present invention by reducing the solidification temperature and viscosity of the melt by the reaction with the core melt to improve the spread (spreading) of the core melt local heat load in the core catcher Prevent rise.

셋째, 본 발명에 따른 노외 노심용융물 냉각설비 희생 콘크리트 조성물 및 이의 제조방법은 노심용융물에 포함된 금속 지르코늄(Zr)을 반응시켜 증기와의 반응으로 생성되는 수소 생성량 또는 발생률을 감소시키도록 한다.Third, the off-core core melt cooling facility sacrificial concrete composition according to the present invention and a method for producing the same to reduce the amount of hydrogen produced or generated by reacting the metal zirconium (Zr) contained in the core melt with steam.

이와 같은 희생콘크리트 조성물의 역할은 삼산화이철(Fe2O3)을 사용하여 다음과 같은 반응을 일으켜 가능하게 할 수 있다.The role of such sacrificial concrete composition can be made possible by causing the following reaction using ferric trioxide (Fe 2 O 3 ).

2Fe2O3 + 3Zr = 4Fe + 3ZrO2 2Fe 2 O 3 + 3Zr = 4Fe + 3ZrO 2

넷째, 본 발명에 따른 노외 노심용융물 냉각설비 희생 콘크리트 조성물 및 이의 제조방법은 노심용융물과의 반응으로 산화 용융물층과 금속 용융물층의 층역전 현상을 통해 재배치되어 코어캐쳐 구조물로 가해지는 열집중 현상을 방지한다.Fourth, the off-core core melt cooling facility sacrificial concrete composition according to the present invention and a method for manufacturing the same are rearranged through the layer reversal phenomenon of the oxidized melt layer and the metal melt layer by reaction with the core melt and applied to the core catcher structure. prevent.

다섯째, 본 발명에 따른 노외 노심용융물 냉각설비 희생 콘크리트 조성물 및 이의 제조방법은 노외 노심용융물 냉각설비 희생 콘크리트 조성물에 가돌리늄(Gd2O3)을 소량 첨가함으로써 노심용융물의 재임계 가능성을 배제한다. Fifth, the off-core core melt cooling equipment sacrificial concrete composition according to the present invention and its manufacturing method excludes the possibility of re-criticality of the core melt by adding a small amount of gadolinium (Gd 2 O 3 ) to the off-core core melt cooling equipment sacrificial concrete composition.

도 1은 본 발명에 따른 노외 노심용융물 냉각설비 희생 콘크리트 조성물이 산화스트론튬(SrO)과 삼산화이철(Fe2O3)을 이용하여 스트론튬 헥사퍼라이트(Strontium Hexaferrite, SrFe12O19)를 만들고, 산화칼슘(CaO)과 산화알루미늄(Al2O3 )으로 구성된 시멘트를 조합하여 만드는 것을 도시한 개념도,
도 2는 본 발명에 따른 노외 노심용융물 냉각설비 희생 콘크리트 조성물에 따라 배제 슬래그를 처리하여 시멘트 혼화제 조성물을 제조하는 과정을 나타내는 플로우 차트. 1 is made of sintertium hexaperrite (Strontium Hexaferrite, SrFe 12 O 19 ) using strontium oxide (SrO) and ferric trioxide (Fe 2 O 3 ) in the off-core core melt cooling facility sacrificial concrete composition according to the present invention, calcium oxide Conceptual diagram showing a combination of cement composed of (CaO) and aluminum oxide (Al 2 O 3 ),
Figure 2 is a flow chart showing a process for producing a cement admixture composition by treating the exclusion slag according to the off-core core melt cooling facility sacrificial concrete composition according to the present invention.

이하, 본 발명을 첨부한 예시도면을 참조하여 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 따른 노외 노심용융물 냉각설비 희생 콘크리트 조성물이 산화스트론튬(SrO)과 삼산화이철(Fe2O3)을 이용하여 스트론튬 헥사퍼라이트(Strontium Hexaferrite, SrFe12O19)를 만들고, 산화칼슘(CaO)과 산화알루미늄(Al2O3 )으로 구성된 시멘트를 조합하여 만드는 것을 도시한 개념도이다.1 is made of sintertium hexaperrite (Strontium Hexaferrite, SrFe 12 O 19 ) using strontium oxide (SrO) and ferric trioxide (Fe 2 O 3 ) in the off-core core melt cooling facility sacrificial concrete composition according to the present invention, calcium oxide It is a conceptual diagram illustrating the creation of a combination of cement consisting of (CaO) and aluminum oxide (Al 2 O 3).

이 도면에 도시된 바와 같이, 본 발명에 따른 노외 노심용융물 냉각설비 희생 콘크리트 조성물은 스트론튬 헥사퍼라이트(Strontium Hexaferrite, SrFe12O19)가 68∼82중량%, 알루미늄 시멘트가 18∼32중량%로 구성된다.As shown in this figure, the off-core core melt cooling equipment sacrificial concrete composition according to the present invention is composed of 68 to 82% by weight of strontium hexaperrite (SrFe 12 O 19 ), 18 to 32% by weight of aluminum cement. do.

이때, 상기 스트론튬 헥사퍼라이트(Strontium Hexaferrite, SrFe12O19)는 삼산화이철(Fe2O3) 88∼94중량%, 산화스트론튬(SrO) 6∼12중량%로 구성되며,
알루미늄 시멘트는 산화알루미늄(Al2O3) 76∼93중량%, 산화칼슘(CaO) 7∼24중량%로 구성된다.At this time, the strontium hexaperrite (Strontium Hexaferrite, SrFe 12 O 19 ) is composed of 88 to 94% by weight of ferric trioxide (Fe 2 O 3 ), 6 to 12% by weight of strontium oxide (SrO),
Aluminum cement is composed of aluminum (Al 2 O 3) 76~93% by weight of oxide, calcium (CaO) 7~24% by weight of oxide.

그 밖에, 이산화규소(SiO2), 이산화티탄(TiO2), 산화마그네슘(MgO), 산화칼륨(K2O), 산화나트륨(Na2O)으로 구성된 시멘트 점성향상 물질을 희생 콘크리트 조성물 100% 대비 1∼5중량% 이하로 소량 첨가한다.In addition, 100% of the concrete composition sacrificial cement viscosity-enhancing material composed of silicon dioxide (SiO 2 ), titanium dioxide (TiO 2 ), magnesium oxide (MgO), potassium oxide (K 2 O), sodium oxide (Na 2 O) A small amount is added in an amount of 1 to 5% by weight or less.

또한, 노심용융물의 재임계를 막기 위해 가돌리늄(Gd2O3)을 희생 콘크리트 조성물 100% 대비 0.1∼0.2중량%를 첨가한다.In addition, gadolinium (Gd 2 O 3 ) is added in an amount of 0.1 to 0.2% by weight based on 100% of the sacrificial concrete composition in order to prevent the criticality of the core melt.

특히, 본 발명에 따른 노외 노심용융물 냉각설비 희생 콘크리트 조성물의 가장 이상적인 구성은 삼산화이철(Fe2O3) 68중량%, 산화알루미늄(Al2O3) 21.1중량%, 산화스트론튬(SrO) 7.4중량%, 산화칼슘(CaO)가 3.5중량%로 구성되며, 노심용융물의 재임계를 방지하기 위하여 가돌리늄(Gd2O3) 0.14중량%를 첨가하여 구성한다.In particular, the most ideal configuration of the off-core core melt cooling equipment sacrificial concrete composition according to the present invention is 68% by weight of ferric trioxide (Fe 2 O 3 ), 21.1% by weight of aluminum oxide (Al 2 O 3 ), 7.4% by weight of strontium oxide (SrO) %, Calcium oxide (CaO) is composed of 3.5% by weight, 0.14% by weight of gadolinium (Gd 2 O 3 ) is added to prevent the re-criticality of the core melt.

상기한 본 발명에 따른 노외 노심용융물 냉각설비 희생 콘크리트 조성물은 산화스트론튬(SrO)과 삼산화이철(Fe2O3)을 이용하여 스트론튬 헥사퍼라이트(Strontium Hexaferrite, SrFe12O19)를 만들고, 이를 산화알루미늄(Al2O3)과 산화칼슘(CaO)으로 구성된 상용 시멘트를 조합하여 만든다.The off-core core melt cooling facility sacrificial concrete composition according to the present invention is made of strontium hexaperrite (Strontium Hexaferrite, SrFe 12 O 19 ) using strontium oxide (SrO) and ferric trioxide (Fe 2 O 3 ), and this aluminum oxide It is made by combining a commercial cement composed of (Al 2 O 3 ) and calcium oxide (CaO).

완성된 희생 콘크리트 조성물은 수분(H2O)을 약 2.5% 함유하고, 용융온도 1610℃±20℃, 고화온도 = 1405℃±10℃ 그리고 밀도 2,400㎏/㎥의 물리적 특성이 있다.The finished sacrificial concrete composition contains about 2.5% of water (H 2 O), and has physical properties of melting temperature 1610 ° C. ± 20 ° C., solidification temperature = 1405 ° C. ± 10 ° C. and density 2,400 kg / m 3.

한편, 도 2는 본 발명에 따른 노외 노심용융물 냉각설비 희생 콘크리트 조성물에 따라 배제 슬래그를 처리하여 시멘트 혼화제 조성물을 제조하는 과정을 나타내는 플로우 차트이다.On the other hand, Figure 2 is a flow chart showing a process for producing a cement admixture composition by treating the exclusion slag according to the off-core core melt cooling equipment sacrificial concrete composition according to the present invention.

이 도면은 APR1400 코어캐쳐에 설치하는 희생 콘크리트 조성물을 만드는 절차로서, 산화스트론튬(SrO)과 삼산화이철(Fe2O3)을 이용하여 스트론튬 헥사퍼라이트(Strontium Hexaferrite, SrFe12O19)를 만들고, 이를 산화칼슘(CaO)과 산화알루미늄(Al2O3)로 구성된 시멘트를 조합하여 희생 콘크리트 조성물을 만드는 것을 보여준다.This drawing is a procedure for making a sacrificial concrete composition to be installed in the APR1400 core catcher, using strontium oxide (SrO) and ferric trioxide (Fe 2 O 3 ) to make strontium hexaperrite (SrFe 12 O 19 ), It shows the combination of cement consisting of calcium oxide (CaO) and aluminum oxide (Al 2 O 3 ) to make a sacrificial concrete composition.

즉, 본 발명에 따른 노외 노심용융물 냉각설비 희생 콘크리트 조성물 제조방법은 산화스트론튬(SrO)과 삼산화이철(Fe2O3)을 이용하여 스트론튬 헥사퍼라이트(Strontium Hexaferrite, SrFe12O19)를 만들고, 산화칼슘(CaO)과 산화알루미늄(Al2O3 )으로 구성된 시멘트를 조합하여 제조하는 방법으로, 상기 삼산화이철(Fe2O3)과 탄산스트론튬(SrCO3)을 1:0.154의 비율로 섞어 스트론튬 헥사퍼라이트(Strontium Hexaferrite, SrFe12O19)를 소성과정을 통해 제조한 후에, 산화알루미늄(Al2O3) 85 중량%, 산화칼슘(CaO) 15 중량%로 구성된 상용시멘트와 1:0.327로 혼합하여 고온 압축성형을 통해 희생 콘크리트를 제조한다.That is, in the method for manufacturing an off-core core melt cooling facility sacrificial concrete composition according to the present invention, using strontium oxide (SrO) and ferric trioxide (Fe 2 O 3 ) to make strontium hexaperrite (Strontium Hexaferrite, SrFe 12 O 19 ), oxidation A method of manufacturing a cement composed of calcium (CaO) and aluminum oxide (Al 2 O 3 ) by combining the ferric trioxide (Fe 2 O 3 ) and strontium carbonate (SrCO 3 ) in a ratio of 1: 0.154 strontium hexa After preparing the ferrite (Strontium Hexaferrite, SrFe 12 O 19 ) through the firing process, and mixed with a commercial cement composed of 85% by weight of aluminum oxide (Al 2 O 3 ), 15% by weight of calcium oxide (CaO) 1: 0.327 Sacrificial concrete is produced by hot pressing.

상기한 바와 같은 구성 및 제조로 이루어진 본 발명에 따른 노외 노심용융물 냉각설비 희생 콘크리트 조성물은 노심용융물과의 반응으로 노심용융물의 온도를 낮춰, 코어캐쳐 구조물의 열적 구조건전성을 유지시킬 수 있다.The off-core core melt cooling equipment sacrificial concrete composition according to the present invention composed of the above-described configuration and manufacturing can lower the temperature of the core melt in reaction with the core melt, thereby maintaining the thermal structural integrity of the core catcher structure.

노심용융물과의 반응으로 용융물의 고화온도와 점도를 감소시켜 노심용융물의 퍼짐(spreading)을 향상시켜, 코어캐쳐 내 국부적인 열부하 상승 위험이 방지된다.Reaction with the core melt reduces the solidification temperature and viscosity of the melt to improve the spreading of the core melt, thereby avoiding the risk of local heat load rise in the core catcher.

노심용융물에 포함된 금속 지르코늄(Zr)을 반응시켜 증기와의 반응으로 생성되는 수소 생성량 또는 발생률을 감소시키도록 한다.Metal zirconium (Zr) contained in the core melt is reacted to reduce the amount of hydrogen produced or the rate of hydrogen produced by the reaction with steam.

이와 같은 희생콘크리트 조성물의 역할은 삼산화이철(Fe2O3)을 사용하여 다음과 같은 반응을 일으켜 가능하게 할 수 있다.The role of such sacrificial concrete composition can be made possible by causing the following reaction using ferric trioxide (Fe 2 O 3 ).

2Fe2O3 + 3Zr = 4Fe + 3ZrO2 2Fe 2 O 3 + 3Zr = 4Fe + 3ZrO 2

노심용융물과의 반응으로 산화 용융물층과 금속 용융물층의 층역전 현상을 통해 재배치되어 코어캐쳐 구조물로 가해지는 열집중 현상이 감소된다.In reaction with the core melt, the thermal concentration of the oxidized melt layer and the metal melt layer is rearranged through the layer reversal phenomenon and applied to the core catcher structure.

희생 콘크리트 조성물에 가돌리늄(Gd2O3)을 소량 첨가함으로써 노심용융물의 재임계 가능성을 배제할 수 있는 작용효과가 있다.By adding a small amount of gadolinium (Gd 2 O 3 ) to the sacrificial concrete composition has the effect of eliminating the possibility of recritical core melt.

Claims (6)

스트론튬 헥사퍼라이트(Strontium Hexaferrite, SrFe12O19)가 68∼82중량%, 알루미늄 시멘트가 18∼32중량%로 구성됨을 특징으로 하는 노외 노심용융물 냉각설비 희생 콘크리트 조성물.Strontium hexaperrite (Strontium Hexaferrite, SrFe 12 O 19 ) 68 to 82% by weight, aluminum cement 18 to 32% by weight, characterized in that the core melt melt cooling equipment sacrificial concrete composition. 제1항에 있어서,
상기 스트론튬 헥사퍼라이트(Strontium Hexaferrite, SrFe12O19)는 삼산화이철(Fe2O3) 88∼94중량%, 산화스트론튬(SrO) 6∼12중량%로 구성됨을 특징으로 하는 노외 노심용융물 냉각설비 희생 콘크리트 조성물.The method of claim 1,
The strontium hexaperrite (Strontium Hexaferrite, SrFe 12 O 19 ) is sacrificed outside core melt cooling equipment, characterized in that consisting of 88 to 94% by weight of ferric trioxide (Fe 2 O 3 ), 6 to 12% by weight of strontium oxide (SrO) Concrete composition. 제1항에 있어서,
상기 알루미늄 시멘트는 산화알루미늄(Al2O3 ) 76∼93중량%, 산화칼슘(CaO) 7∼24중량%로 구성됨을 특징으로 하는 노외 노심용융물 냉각설비 희생 콘크리트 조성물.The method of claim 1,
The aluminum cement is aluminum oxide (Al 2 O 3 ) 76-93% by weight, calcium oxide (CaO) 7 to 24% by weight of the off-core core melt cooling equipment sacrificial concrete composition. 제1항에 있어서,
상기 희생 콘크리트 조성물 중량 100% 대비 이산화규소(SiO2), 이산화티탄(TiO2), 산화마그네슘(MgO), 산화칼륨(K2O), 산화나트륨(Na2O)으로 구성된 시멘트 점성향상 물질을 1∼5중량% 첨가함을 특징으로 하는 노외 노심용융물 냉각설비 희생 콘크리트 조성물.The method of claim 1,
A cement viscosity-enhancing material composed of silicon dioxide (SiO 2 ), titanium dioxide (TiO 2 ), magnesium oxide (MgO), potassium oxide (K 2 O), and sodium oxide (Na 2 O) relative to 100% by weight of the sacrificial concrete composition 1 to 5% by weight of the core melt melt cooling equipment sacrificial concrete composition. 제1항에 있어서,
상기 희생 콘크리트 조성물 중량 100% 대비 가돌리늄(Gd2O3)을 0.1∼0.2중량%를 첨가함을 특징으로 하는 노외 노심용융물 냉각설비 희생 콘크리트 조성물.The method of claim 1,
The off-core core melt cooling equipment sacrificial concrete composition, characterized in that 0.1 to 0.2% by weight of gadolinium (Gd 2 O 3 ) is added to 100% by weight of the sacrificial concrete composition. 산화스트론튬(SrO)과 삼산화이철(Fe2O3)을 이용하여 스트론튬 헥사퍼라이트(Strontium Hexaferrite, SrFe12O19)를 만들고, 산화칼슘(CaO)과 산화알루미늄(Al2O3 )으로 구성된 시멘트를 조합하여 제조하는 방법으로,
상기 삼산화이철(Fe2O3)과 탄산스트론튬(SrCO3)을 1:0.154의 비율로 섞어 스트론튬 헥사퍼라이트(Strontium Hexaferrite, SrFe12O19)를 소성과정을 통해 제조한 후에, 산화알루미늄(Al2O3) 85 중량%, 산화칼슘(CaO) 15 중량%로 구성된 상용시멘트와 1:0.327로 혼합하여 고온 압축성형을 통해 희생 콘크리트를 제조함을 특징으로 하는 노외 노심용융물 냉각설비 희생 콘크리트 조성물 제조방법.

Strontium Hexaferrite (SrFe 12 O 19 ) was made using strontium oxide (SrO) and ferric trioxide (Fe 2 O 3 ), and a cement composed of calcium oxide (CaO) and aluminum oxide (Al 2 O 3 ) was used. In the method of manufacturing in combination,
After mixing the ferric trioxide (Fe 2 O 3 ) and strontium carbonate (SrCO 3 ) in a ratio of 1: 0.154, strontium hexaperrite (Strontium Hexaferrite, SrFe 12 O 19 ) is manufactured through a calcination process, aluminum oxide (Al 2 O 3 ) A method for manufacturing an off-core core melt cooling facility sacrificial concrete composition characterized in that the sacrificial concrete is prepared by hot compression molding by mixing with commercial cement composed of 85% by weight and 15% by weight of calcium oxide (CaO) at 1: 0.327. .

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