KR100250027B1 - Manufacturing method of recovered magnesia clinker and the recovered magnesia clinker - Google Patents
Manufacturing method of recovered magnesia clinker and the recovered magnesia clinker Download PDFInfo
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- KR100250027B1 KR100250027B1 KR1019970079460A KR19970079460A KR100250027B1 KR 100250027 B1 KR100250027 B1 KR 100250027B1 KR 1019970079460 A KR1019970079460 A KR 1019970079460A KR 19970079460 A KR19970079460 A KR 19970079460A KR 100250027 B1 KR100250027 B1 KR 100250027B1
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- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 title claims abstract description 133
- 239000000395 magnesium oxide Substances 0.000 title claims abstract description 63
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- 239000011449 brick Substances 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000012535 impurity Substances 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 239000000126 substance Substances 0.000 claims abstract description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- 229910052799 carbon Inorganic materials 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 5
- 239000002893 slag Substances 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 3
- 238000009628 steelmaking Methods 0.000 claims description 3
- 238000000746 purification Methods 0.000 claims 2
- 239000011819 refractory material Substances 0.000 claims 1
- 238000006703 hydration reaction Methods 0.000 abstract description 14
- 230000036571 hydration Effects 0.000 abstract description 11
- 239000002994 raw material Substances 0.000 abstract description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 10
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 229910052596 spinel Inorganic materials 0.000 description 5
- 239000011029 spinel Substances 0.000 description 5
- PPQREHKVAOVYBT-UHFFFAOYSA-H dialuminum;tricarbonate Chemical compound [Al+3].[Al+3].[O-]C([O-])=O.[O-]C([O-])=O.[O-]C([O-])=O PPQREHKVAOVYBT-UHFFFAOYSA-H 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 238000004455 differential thermal analysis Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 229940118662 aluminum carbonate Drugs 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 229910020068 MgAl Inorganic materials 0.000 description 1
- MXRIRQGCELJRSN-UHFFFAOYSA-N O.O.O.[Al] Chemical compound O.O.O.[Al] MXRIRQGCELJRSN-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000009920 chelation Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 230000005070 ripening Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
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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
- C04B2/00—Lime, magnesia or dolomite
- C04B2/005—Lime, magnesia or dolomite obtained from an industrial by-product
-
- 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
- C04B2/00—Lime, magnesia or dolomite
- C04B2/10—Preheating, burning calcining or cooling
- C04B2/102—Preheating, burning calcining or cooling of magnesia, e.g. dead burning
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
본 발명은 정제 마그네시아 클링커 제조방법 및 그에 따른 정제 마그네시아 클링커에 관한 것으로서, 제강용 내화재로 사용되는 마그네시아 카본질 내화벽돌을 사용한 후, 이 마그네시아 카본질 내화벽돌에서 지금 및 슬래그를 제거하여 1차 분쇄하고, 105℃ 온도의 수조에서 24시간 수화처리하고, 500℃ 온도의 가스로에서 12시간동안 건조한 후, 2차 분쇄하여 입도분급한 것을 특징으로 한다. 그리고, 정제 마그네시아 클링커 제조방법에 따라 정제되어, 마그네시아(MgO)가 80∼95중량％, 고정탄소량이 5∼20중량％, 기타 불순물이 10중량％ 이하의 화학적 구성을 갖는 것을 특징으로 한다.The present invention relates to a method for producing a purified magnesia clinker and a purified magnesia clinker according to the present invention. It is characterized in that the hydration treatment for 24 hours in a 105 ° C water bath, dried for 12 hours in a gas furnace of 500 ° C temperature, and then pulverized by secondary grinding. And it refine | purifies according to the refined magnesia clinker manufacturing method, It is characterized by having a chemical composition of 80-95 weight% of magnesia (MgO), 5-20 weight% of fixed carbons, and 10 weight% or less of other impurities.
이러한, 정제 마그네시아 클링커는 사용 후 마그네시아 카본질 내화벽돌에서 발생되는 수화반응에 의한 부피팽창을 방지하여 안정되게 하므로 마그네시아 카본질 내화벽돌의 원료를 안정적으로 재사용할 수 있는 효과가 있다.The purified magnesia clinker prevents volume expansion by the hydration reaction generated in the magnesia carbonaceous refractory brick after use to stabilize the raw material of the magnesia carbonaceous refractory brick.
Description
본 발명은 정제 마그네시아 클링커 제조방법 및 그에 따른 정제 마그네시아 클링커에 관한 것으로서, 보다 상세하게는 제강용 설비에 내화재로 사용되는 마그네시아 카본질 내화벽돌의 사용 후의 폐기시에 이 폐기되는 마그네시아 카본질 내화벽돌에서 마그네시아 클링커를 정제하여 다시 사용할 수 있게 하는 정제 마그네시아 클링커 제조방법 및 그에 따른 정제 마그네시아 클링커에 관한 것이다.The present invention relates to a method for producing a purified magnesia clinker and a purified magnesia clinker according to the present invention. The present invention relates to a method for preparing a magnesia clinker for purifying and reusing magnesia clinker, and a purified magnesia clinker accordingly.
일반적으로, 마그네시아 카본질 내화벽돌은 제강용 설비 즉, 전로, 레들등에 내화재로 다양하게 사용 되어지고 있다. 이러한 마그네시아 카본질 내화벽돌은 카본 함유 내화벽돌의 최대 단점인 카본의 산화성을 개선하기 위하여 금속 알루미늄이나 마그네슘 알루미늄 합금을 일정량 첨가하여 사용하는데, 이러한 첨가제는 사용중에 알루미늄카보네이트(Al4C3)나 스피넬(Spinel)을 생성하게 된다. 생성물중에 알루미늄카보네이트는 식1과 같이 수분과 반응하여 수산화알루미늄(Al(OH)3)을 생성하여 부피 팽창함으로 재처리 공정없이 분쇄하여 마그네시아 카본질 내화벽돌에 재사용이 불가능하게 되므로 상기 마그네시아 카본질 내화벽돌은 소정기간 사용 후에 폐기처리 되었다.In general, magnesia carbonaceous refractory bricks are variously used as fireproof materials in steelmaking facilities, namely converters and ladles. The magnesia carbonaceous refractory brick is used by adding a certain amount of metal aluminum or magnesium aluminum alloy in order to improve the oxidation resistance of carbon, which is the biggest disadvantage of the carbon-containing refractory brick, such additives are aluminum carbonate (Al 4 C 3 ) or spinel during use. Will create a Spinel. The aluminum carbonate in the product reacts with moisture to produce aluminum hydroxide (Al (OH) 3 ), pulverizes without reprocessing by volume expansion as it is not reused in the magnesia carbonaceous fire brick, as shown in Equation 1. The bricks were discarded after a period of use.
Al4C3＋ H2O -----------＞ Al(OH)3＋ CH4(식1)Al 4 C 3 + H 2 O -----------> Al (OH) 3 + CH 4 (Equation 1)
본 발명은 상기와 같이 소정기간 사용 후에 폐기되는 마그네시아 카본질 내화벽돌을 수화처리 및 건조작업과 철분의 분리작업을 통해 마그네시아 클링커를 정제하여 이 정제된 마그네시아 클링커를 새로운 마그네시아 카본질 내화벽돌에 재사용할 수 있도록 한 정제 마그네시아 클링커 제조방법 및 그에 따른 정제 마그네시아 클링커를 제공하는데 그 목적이 있다.The present invention purifies the magnesia clinker through hydration, drying and iron separation of the magnesia carbonaceous firebrick, which is discarded after a predetermined period of use as described above, and reuses the purified magnesia clinker in a new magnesia carbonaceous firebrick. It is an object of the present invention to provide a method for preparing a purified magnesia clinker and a purified magnesia clinker accordingly.
상술한 목적을 달성하기 위한 본 발명은 제강용 내화재로 사용되는 마그네시아 카본질 내화벽돌을 사용한 후, 이 마그네시아 카본질 내화벽돌에서 지금 및 슬래그를 제거하여 1차 분쇄하고, 105℃ 온도의 수조에서 24시간 수화처리하고, 500℃ 온도의 가스로에서 12시간동안 건조한 후, 2차 분쇄하여 입도분급한 것을 특징으로 한다.In order to achieve the above object, the present invention uses the magnesia carbonaceous refractory brick used as a fire retardant for steelmaking, and then removes the slag from the magnesia carbonaceous refractory brick and removes the slag first, and then, in a water bath at a temperature of 105 ° C. After hydration for time, and dried for 12 hours in a gas furnace at 500 ℃ temperature, it is characterized in that the secondary pulverization by classifying the particle size.
그리고, 정제 마그네시아 클링커 제조방법에 따라 정제되어, 마그네시아(MgO)가 80∼95중량％, 고정탄소량이 5∼20중량％, 기타 불순물이 10중량％ 이하의 화학적 구성을 갖는 것을 특징으로 한다.And it refine | purifies according to the refined magnesia clinker manufacturing method, It is characterized by having a chemical composition of 80-95 weight% of magnesia (MgO), 5-20 weight% of fixed carbons, and 10 weight% or less of other impurities.
도 1은 본 발명에 따른 실시예로서, 마그네시아 카본질 내화벽돌의 시차열분석 결과를 도시한 도면1 is a view showing the results of differential thermal analysis of a magnesia carbonaceous fire brick as an embodiment according to the present invention
도 2는 본 발명에 따른 마그네시아 카본질 내화벽돌의 Ｘ선회절분석 결과를 도시한 도면2 is a view showing the results of the X-ray diffraction analysis of magnesia carbonaceous fire bricks according to the present invention
도 3은 본 발명에 따른 마그네시아 카본질 내화벽돌을 반사현미경으로 본 미세조직을 도시한 도면3 is a view showing a microstructure of the magnesia carbonaceous fire brick according to the present invention as seen under a reflection microscope
도 4는 본 발명에 따른 작업공정을 도시한 도면4 shows a working process according to the invention.
이하 본 발명의 바람직한 실시예를 상세히 설명하면 다음과 같다.Hereinafter, the preferred embodiment of the present invention will be described in detail.
도 4를 참조로 하면, 우선 사용 후의 마그네시아 카본질 내화벽돌에서 지금 및 슬래그를 제거한다.Referring to Fig. 4, firstly and slag are removed from the magnesia carbonaceous refractory brick after use.
이 마그네시아 카본질 내화벽돌을 수화처리한다. 105℃ 온도의 수조에 지금과 슬래그가 제거된 사용 후의 마그네시아 카본질 내화벽돌을 넣고, 시간을 4∼48시간까지 4시간 간격으로 변화시키면서 수화 적정시간을 시험한 결과 24시간 이후부터 완전한 수화반응이 이루어졌음을 확인할 수 있었다.This magnesia carbonaceous fire brick is hydrated. After the magnesia carbonaceous refractory brick, which has been removed from the slag and used in the 105 ° C water bath, was tested for hydration titration while changing the time between 4 and 48 hours at intervals of 4 to 48 hours, the complete hydration reaction started after 24 hours. It was confirmed that it was done.
수화처리된 마그네시아 카본질 내화벽돌을 건조시킨다. 최적의 건조조건을 구하기 위하여 탈수 가능온도인 500℃에서 시간을 4∼48시간 범위에서 4시간 간격으로 시험한 결과 12시간 이후부터 함수알루미나(Al2O3·nH2O)가 존재하지 않고, 사용 가능한 정제 마그네시아(MgO)로 존재함을 알 수 있었다.The hydrated magnesia carbonaceous firebrick is dried. Is not present and the function of alumina (Al 2 O 3 · nH 2 O) from the dehydration temperature can be the result after 12 hours from the time in the range 4-48 hours 500 ℃ tested every 4 hours to obtain optimum drying conditions, It can be seen that it exists as a usable purified magnesia (MgO).
건조 후의 마그네시아 카본질 내화벽돌을 2차 분쇄하고, 2차 분쇄된 마그네시아 카본질 내화벽돌을 자력선광을 통해 철분을 분리해 내고, 클링커를 추출하여 입도분급한다.After drying, the magnesia carbonaceous firebrick is secondaryly pulverized, and the secondary crushed magnesia carbonaceous firebrick is separated by magnetic beneficiation, and the clinker is extracted to classify the particle size.
한편, 전술한 바와 같이 105℃에서 24시간 수화처리 후 500℃에서 12시간동안 건조한 정제 마그네시아 클링커는 마그네시아(MgO)가 80∼95중량％, 고정탄소량이 5∼20중량％, 기타 불순물이 10중량％ 이하의 화학적 구성을 가진다.Meanwhile, as described above, the purified magnesia clinker dried at 500 ° C. for 24 hours after hydration treatment at 105 ° C. for 80 hours for 80% to 95% by weight of magnesia (MgO), 5 to 20% by weight of fixed carbon, and 10% for other impurities. It has a chemical composition of% or less.
그리고, 첨부도면 도 1은 105℃에서 24시간 수화 처리후 500℃에서 12시간동안 건조한 정제 마그네시아 클링커에 대한 시차열분석(TG-DTA)결과이다.And, Figure 1 is a differential thermal analysis (TG-DTA) results for purified magnesia clinker dried for 12 hours at 500 ℃ after hydration treatment at 105 ℃ 24 hours.
상기 마그네시아 카본질 내화벽돌에 산화방지를 목적으로 첨가 되어진 금속 알루미늄이나 마그네슘 알루미늄 합금은 식2,3,4와 같이 반응하여 내화벽돌내에 Al4C3나 Al2O3및 MgO·Al2O3(스피넬)로 존재하게 된다.The metal aluminum or magnesium aluminum alloy added to the magnesia carbonaceous refractory brick for the purpose of preventing oxidation is reacted as shown in Equations 2, 3, and 4 to form Al 4 C 3 , Al 2 O 3 and MgO · Al 2 O 3 in the refractory brick. (Spinel) to exist.
4Al(l)＋ 3C(s) -----------＞ Al4C3(식2)4Al (l) + 3C (s) -----------> Al 4 C 3 (Equation 2)
2Al(l)＋ 3MgO(s) ---------＞ Al2O3(s) ＋ 3MgO(g) (식3)2Al (l) + 3MgO (s) ---------> Al 2 O 3 (s) + 3MgO (g) (Formula 3)
Al2O3(s)＋ MgO(s) ---------＞ MgAl2O4(s) (식4)Al 2 O 3 (s) + MgO (s) ---------> MgAl 2 O 4 (s) (Equation 4)
사용 후의 마그네시아 카본질 내화벽돌은 수화처리후 식2에서 생성된 Al4C3는 식5와 같이 하이드로질라이트(Hydrogillite, Al2O3·3H2O)로 존재하고, 건조과정을 통하여 식6,7과 같이 흡착수를 방출하게 된다.After use, the magnesia carbonaceous firebrick is Al 4 C 3 produced by the hydration treatment as Hydrogenite (Hydrogillite, Al 2 O 3 · 3H 2 O) as shown in Equation 5. Adsorbed water is discharged as shown in.
Al4C3＋ 9H2O --------------＞ Al2O3·3H2O ＋ 3CH4↑ (식5)Al 4 C 3 + 9H 2 O --------------> Al 2 O 3 · 3H 2 O + 3CH 4 ↑ (Equation 5)
Al2C3·3H2O ----------------＞ Al2O3·H2O ＋ 2H2O ↑ (식6) Al 2 C 3 · 3H 2 O ----------------> Al 2 O 3 · H 2 O + 2H 2 O ↑ ( formula 6)
Al2C3·H2O -----------------＞ γ-Al2O3＋ H2O ↑ (식7) Al 2 C 3 · H 2 O -----------------> γ-Al 2 O 3 + H 2 O ↑ ( Formula 7)
시차열분석 결과 수화처리에 의한 수분 즉, 흡착수 및 결정수 방출에 기인하는 Peak는 없고, 카본의 산화에 기인하는 Peak가 460℃ 부근에서 시작하여 700℃ 부근에서 산화속도가 가속화한다.As a result of differential thermal analysis, there is no peak due to the release of moisture, that is, adsorbed and crystallized water, and the peak due to oxidation of carbon starts around 460 ° C and accelerates the oxidation rate around 700 ° C.
도 2는 105℃에서 24시간 수화처리후 500℃에서 12시간 동안 건조한 정제 마그네시아 클링커에 대한 Ｘ선회절분석(XRD)결과이다.FIG. 2 shows X-ray diffraction (XRD) results of purified magnesia clinker dried at 500 ° C. for 12 hours after hydration at 105 ° C. for 24 hours.
주 광물상은 마그네시아(MgO)와 카본(Graphite)이며, 스피넬 상이 존재한다. 상기 스피넬의 존재는 원 벽돌에 카본의 산화방지 목적으로 첨가되었던 금속 알루미늄 또는 마그네슘 알루미늄 합금이 마그네시아와 반응하여(식4) 벽돌 내부에 존재하기 때문이다.The main mineral phases are magnesia (MgO) and carbon (Graphite), with spinel phases present. The presence of the spinel is due to the presence of metal aluminum or magnesium aluminum alloy, which was added to the raw brick for the purpose of preventing oxidation of carbon, inside the brick by reaction with magnesia (Equation 4).
그리하여, 상기 공정으로 제조되어진 정제 마그네시아 클링커는 수화 및 건조 공정에서 Al4C3와 물의 반응에 의해 생성되는 함수알루미나(Al2O3·nH2O)는 존재하지 않는 것으로 확인되었다.Thus, it was confirmed that the purified magnesia clinker prepared by the above process did not contain hydrous alumina (Al 2 O 3 · nH 2 O) produced by the reaction of Al 4 C 3 and water in the hydration and drying process.
도3은 105℃에서 24시간 수화처리후 500℃에서 12시간 동안 건조한 정제 마그네시아 클링커에 대한 반사현미경 미세조직 관찰 결과이다. 상기 공정으로 제조 되어진 정제 마그네시아 클링커는 마그네시아 카본질 내화벽돌에 사용되는 마그네시아 클링커의 회복과 카본과 마그네시아 클링커 미세입도의 결합체가 존재함이 확인되었다.FIG. 3 is a result of observation of reflectance microstructure of purified magnesia clinker dried at 500 ° C. for 12 hours after hydration treatment at 105 ° C. for 24 hours. Purified magnesia clinker prepared in the above process was confirmed that there is a combination of the recovery of magnesia clinker used in magnesia carbonaceous refractory brick and the fine particle size of carbon and magnesia clinker.
한편, 105℃에서 24시간 수화처리후 500℃에서 12시간 동안 건조한 정제 마그네시아 클링커를 마그네시아 카본질 내화벽돌 제조에 사용되는 페놀수지를 5중량비 사용하여 혼련한 후, 시간별로 숙성하여 80×80mm 금형으로 1ton/㎠의 압력으로 가압성형하여 성형체의 외관 및 균열발생 상태를 관찰하였으며, 그 결과를 표 1에 나타내었다.On the other hand, after hydration treatment at 105 ℃ for 24 hours, the purified magnesia clinker dried at 500 ℃ for 12 hours was kneaded using 5 weight ratio of phenolic resin used for the production of magnesia carbonaceous refractory brick, and aged by time to 80 × 80 mm mold Press molding at a pressure of 1ton / ㎠ to observe the appearance and cracking state of the molded body, the results are shown in Table 1.
정제 마그네시아 클링커 내에 수분이 존재한다면 킬레이트 반응(Chelation)에 의한 균열이 발생할 것이나, 상기 공정으로 제조되어진 정제 마그네시아 클링커는 균열이 발생하지 않았다.If water is present in the purified magnesia clinker, cracking will occur due to chelation, but the purified magnesia clinker prepared by the above process will not crack.
이상에서 살펴 본 바와 같이, 본 발명의 정제 마그네시아 클링커 제조방법 및 그에 따른 정제 마그네시아 클링커는 사용 후의 폐기되는 마그네시아 카본질 내화벽돌을 105℃에서 24시간 수화처리하고, 500℃에서 12시간 동안 건조하여 추출된 정제 마그네시아 클링커는 사용 후 마그네시아 카본질 내화벽돌에서 발생되는 수화반응에 의한 부피팽창을 방지하여 안정되게 하므로 마그네시아 카본질 내화벽돌의 원료를 안정적으로 재사용할 수 있는 효과가 있다.As described above, the purified magnesia clinker production method of the present invention and the purified magnesia clinker according to the present invention are hydrated magnesia carbonaceous refractory brick discarded after use at 105 ° C. for 24 hours, and dried at 500 ° C. for 12 hours for extraction. The purified magnesia clinker prevents the volume expansion caused by the hydration reaction generated in the magnesia carbonaceous refractory brick after use to stabilize the raw material of the magnesia carbonaceous refractory brick can be stably reused.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101105437B1 (en) * | 2010-05-11 | 2012-01-17 | (주)포스코켐텍 | Recycling of Waste Mag Carbon Refractories |
| KR101436523B1 (en) | 2012-12-10 | 2014-09-01 | (주)포스코켐텍 | Method for manufacturing refractory material using waste fire brick |
| KR101602334B1 (en) * | 2014-05-23 | 2016-03-21 | 허은영 | METHOD FOR REGENERATING REFRACTORIES CONTAINING Al4C3 |
| KR101703844B1 (en) * | 2015-11-16 | 2017-02-08 | 주식회사 금강알씨 | The abandoned magnesia carbon recycling system |
| KR20200054418A (en) | 2018-11-09 | 2020-05-20 | (주)포스코케미칼 | Reusable magnesia-carbon refractories |
| KR20250054905A (en) | 2023-10-16 | 2025-04-24 | (주)포스코퓨처엠 | MgO-C Refractory Materials Having Superior Anti-Hydration |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102078467B1 (en) * | 2018-08-21 | 2020-02-17 | 김대철 | Method and system for regenerating of refractory material |
-
1997
- 1997-12-30 KR KR1019970079460A patent/KR100250027B1/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101105437B1 (en) * | 2010-05-11 | 2012-01-17 | (주)포스코켐텍 | Recycling of Waste Mag Carbon Refractories |
| KR101436523B1 (en) | 2012-12-10 | 2014-09-01 | (주)포스코켐텍 | Method for manufacturing refractory material using waste fire brick |
| KR101602334B1 (en) * | 2014-05-23 | 2016-03-21 | 허은영 | METHOD FOR REGENERATING REFRACTORIES CONTAINING Al4C3 |
| KR101703844B1 (en) * | 2015-11-16 | 2017-02-08 | 주식회사 금강알씨 | The abandoned magnesia carbon recycling system |
| KR20200054418A (en) | 2018-11-09 | 2020-05-20 | (주)포스코케미칼 | Reusable magnesia-carbon refractories |
| KR20250054905A (en) | 2023-10-16 | 2025-04-24 | (주)포스코퓨처엠 | MgO-C Refractory Materials Having Superior Anti-Hydration |
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