KR100481372B1 - Manufacturing Method of Acid Soil Heavy Fire Using Converter Slag - Google Patents
Manufacturing Method of Acid Soil Heavy Fire Using Converter Slag Download PDFInfo
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- KR100481372B1 KR100481372B1 KR1019970069230A KR19970069230A KR100481372B1 KR 100481372 B1 KR100481372 B1 KR 100481372B1 KR 1019970069230 A KR1019970069230 A KR 1019970069230A KR 19970069230 A KR19970069230 A KR 19970069230A KR 100481372 B1 KR100481372 B1 KR 100481372B1
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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
- C09K17/04—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only applied in a physical form other than a solution or a grout, e.g. as granules or gases
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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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
-
- 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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/64—Burning or sintering processes
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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
- C09K2109/00—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE pH regulation
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
본 발명은 단순 폐기처리되는 미세한 전로슬래그의 활용방안의 하나로서, 그 목적은 미세한 전로슬래그를 산성의 토양을 지속적으로 중화시킬 수 있는 저렴한 토양중화재로 제조할 수 있는 방법을 제공함에 있다. The present invention is one of the utilization of the fine converter slag that is simply discarded, its object is to provide a method for producing a fine converter slag as an inexpensive soil neutralizer that can continuously neutralize the acidic soil.
상기 목적을 달성하기 위한 본 발명은, 2mm이하의 전로슬래그를 점토에 25-75중량% 첨가하여 혼합한 후 이 혼합체를 1-2mm의 크기로 성형하고, 이어 성형된 혼합체를 300-600℃의 온도에서 0.5-1시간동안 소성하여 이루어지는 전로슬래그를 이용한 산성토양중화재의 제조방법에 관한 것을 그 요지로 한다.The present invention for achieving the above object, 25-75% by weight of a converter slag of 2mm or less is added to the clay and mixed, and then the mixture is molded to a size of 1-2mm, and then the molded mixture of 300-600 ℃ The gist of the present invention relates to a method for producing an acidic soil neutralizing material using converter slag which is fired at a temperature of 0.5-1 hour.
Description
본 발명은 단순폐기처리되는 미세한 전로슬래그의 활용방안의 하나로서, 보다 상세하게는 전로슬래그를 활용하여 산성토양중화재로 이용하기 위한 제조방법에 관한 것이다.The present invention relates to a method for utilizing fine converter slag that is simply disposed of, and more particularly, to a manufacturing method for use as an acid soil neutralizing material using converter slag.
일반적으로 제철소 제강공정에서는 용강중의 불순물을 제거하는 과정에서 슬래그가 부산물로서 발생되고 있다. 일례로 제강공정의 전로에서도 이러한 슬래그가 다량발생되고 있으며, 이 전로슬래그는 기계적강도가 높고 화학적강도는 낮아 슬래그중 지금을 추출한 나머지 슬래그는 단순 매립되고 있는 실정이다. 특히, 전로슬래그의 지금을 추출하는 과정에서 발생하는 미세한 전로슬래그는 더욱 처리가 곤란한 실정이다. In general, slag is generated as a by-product in the process of removing impurities in molten steel in a steel making process. For example, a large amount of such slag is generated in the converter of the steelmaking process. The converter slag has a high mechanical strength and a low chemical strength, and the present slag extracted from the slag is simply buried. In particular, the fine converter slag generated in the process of extracting the current of the converter slag is more difficult to process.
이제까지 제강슬래그의 활용방법으로 규산염광석, 유리먼지, 석탄회 등을 첨가하여 소량의 산화칼슘, 수산화칼슘, 수산화나트륨을 가진 수세슬래그를 제조하는 방법이 일본공개특허공보 (소)61-21794호에 제안된 바 있다. 이 방법은 지금추출전의 제강슬래그 활용방법으로서, 아직까지는 지금추출후의 전로슬래그 활용방안에 대해서는 보고된 바 없다.Until now, a method for producing a flush slag having a small amount of calcium oxide, calcium hydroxide, and sodium hydroxide by adding silicate ore, glass dust, and coal ash as a method of using steelmaking slag has been proposed in Japanese Patent Laid-Open No. 61-21794. There is a bar. This method is a method of using steelmaking slag before extraction, and there are no reports on the use of converter slag after extraction.
지금이 추출된 미세한 전로슬래그는 염기성으로서, 주성분은 산화칼슘과 산화마그네슘이며, 이외에도 상당량의 자유산화칼슘이 포함되어 있어 높은 염기성을 나타낸다. 본 발명자들은 이러한 특성을 가지는 미세한 전로슬래그의 활용방안을 찾던 중 산성토양중화재로 사용될 수 있음을 확인하고 본 발명을 제안하는 바 있다.The fine converter slag extracted now is basic, and its main components are calcium oxide and magnesium oxide, and it contains a considerable amount of free calcium oxide and shows high basicity. The present inventors have found that the present invention can be used as an acidic soil neutralizing agent during the search for the utilization of a fine converter slag having such characteristics.
본 발명은 단순 폐기처리되는 미세한 전로슬래그의 활용방안의 하나로서, 미세한 전로슬래그를 산성의 토양을 지속적으로 중화시킬 수 있는 저렴한 토양중화재로 제조할 수 있는 방법을 제공하는데, 그 목적이 있다. The present invention is to provide a method for producing a fine converter slag as an inexpensive soil neutralizing material that can continuously neutralize the acidic soil as one of the utilization of the fine converter slag that is simply discarded.
상기 목적을 달성하기 위한 본 발명은, 2mm이하의 전로슬래그를 점토에 25-75중량% 첨가하여 혼합한 후 이 혼합체를 1-2mm의 크기로 성형하고, 이어 성형된 혼합체를 300-600℃의 온도에서 0.5-1시간동안 소성하는 것을 포함하여 구성된다.The present invention for achieving the above object, 25-75% by weight of a converter slag of 2mm or less is added to the clay and mixed, and then the mixture is molded to a size of 1-2mm, and then the molded mixture of 300-600 ℃ And baking for 0.5-1 hour at temperature.
이하, 본 발명을 상세히 설명한다.Hereinafter, the present invention will be described in detail.
전로슬래그는 산화칼슘이 40-50중량%이상 포함되어 있으며, 지금추출을 위하여 파쇄될 경우 다량의 미세한 전로슬래그가 발생한다. The converter slag contains 40-50% by weight or more of calcium oxide, and when it is crushed for extraction, a large amount of fine converter slag is generated.
본 발명은 이러한 전로슬래그를 산성토양중화재로 이용하는데, 이 전로슬래그는 성형체의 크기를 고려하여 2mm이하의 것으로 선별하여 사용하는 것이 바람직하다. In the present invention, the converter slag is used as an acid soil neutralizing material, and the converter slag is preferably selected to be 2 mm or less in consideration of the size of the molded body.
전로슬래그만을 실제 산성토양에 시비할 경우 비산이 심하여 작업이 곤란할 뿐만 아니라, 염기성분이 이온화되어 나오는 속도 즉, 용출속도가 빨라 오히려 토양에 나쁜 영향을 줄 수 있으므로 적절하게 처리할 필요가 있다. 즉, 전로슬래그의 용출속도가 적절히 조절되고, 또한, 토양과 비슷한 물성과 입도를 가지도록 처리해야 한다.When only the converter slag is applied to the actual acid soil, it is difficult to work due to severe scattering, and the base component is ionized, that is, the elution rate is high, which may adversely affect the soil. In other words, the dissolution rate of converter slag should be properly controlled, and should be treated to have similar physical properties and particle size as soil.
본 발명에 의하면, 2mm이하의 전로슬래그는 점토에 25-75중량%로 첨가하여 혼합하는 것이 필요하다. 그 이유는 미세한 전로슬래그의 첨가량이 25중량%미만이면 단기간의 중화효과를 기대할 수 없으며, 75중량%를 넘으면 성형성이 떨어질 뿐만 아니라 강도저하로 다시 미세한 분말로 변할 수 가 있기 때문이다. 그리고, 이때의 혼합은 특별한 방법이 있는 것이 아니고 단지 전로슬래그와 점토가 가능한 균일하게 섞이도록 하면 된다. According to the present invention, converter slag of 2 mm or less needs to be added to the clay at 25-75 wt% and mixed. The reason is that if the addition amount of fine converter slag is less than 25% by weight can not expect a short-term neutralization effect, if it exceeds 75% by weight can not only be reduced in formability, but also can change back to a fine powder due to the decrease in strength. At this time, there is no special method of mixing, but the mixing of the converter slag and clay is as uniform as possible.
상기와 같은 비율로 혼합한 다음 성형하는데, 이때 성형은 그 성형체의 크기가 1-2mm가 되도록만 하면 된다. 이는 작업성을 확보함과 더불어 토양과 유사한 크기를 갖도록 하여 중화효과를 높이기 위해서이다.The mixture is mixed in the same ratio as described above, and the molding is performed, and the molding may be performed so that the size of the molded body is 1-2 mm. This is to ensure workability and to increase the neutralization effect by having a size similar to soil.
상기와 같은 크기로 성형된 성형체를 300-600℃의 온도에서 0.5-1시간 소성하는 것이 바람직한데, 그 이유는 300℃미만에서 소성할 경우 불완전한 소성으로 강도가 크게 떨어지고, 600℃를 넘으면 강도효과는 크지 않고 열에너지만 소비되기 때문이다. 그리고, 소성시간은 소성온도와 관련이 있는데, 소성시간이 30분미만이면 소성강도가 작아 다시 미세한 분말이 될 가능성이 높으며, 소성시간이 1시간을 넘으면 공정시간 및 비용이 많이 소요되는 문제점이 있다.It is preferable to bake the molded article molded to the same size as 0.5-1 hours at a temperature of 300-600 ℃, because when the firing at less than 300 ℃ the strength is greatly reduced due to incomplete firing, if the temperature exceeds 600 ℃ strength effect Is not large and only heat energy is consumed. In addition, the firing time is related to the firing temperature, but if the firing time is less than 30 minutes, the plastic strength is small and the powder is likely to become fine powder again. .
이하, 본 발명을 실시예를 통하여 구체적으로 설명한다.Hereinafter, the present invention will be described in detail through examples.
[실시예]EXAMPLE
2mm이하의 전로슬래그 분말을 점토에 하기 표 1과 같이 첨가한 후 혼합하고, 1-2mm의 크기로 성형한 다음, 하기 표 1과 같은 조건에서 소성하였다. 이와 같이 소성하여 얻은 산성토양중화재를 토양산도가 4.0인 토양에 10중량% 혼합하고 10중량%의 증류수를 혼합한 다음 24시간 정치하고 토양산도를 측정하여 하기 표 1에 나타내었다.The converter slag powder of 2 mm or less was added to the clay as shown in Table 1, mixed, molded into a size of 1-2 mm, and then calcined under the conditions shown in Table 1 below. The acid soil neutralizing material obtained by sintering was mixed with 10% by weight of soil with soil acidity 4.0, 10% by weight of distilled water was mixed, and then left to stand for 24 hours. The soil acidity was measured and shown in Table 1 below.
[표 1]TABLE 1
상기 표 1에 나타난 바와 같이, 본 발명에 의하면 토양산도가 4.0인 산성토양이 6.1-7.8사이의 적정한 산도로 중화되었음을 알 수 있다.As shown in Table 1, it can be seen that according to the present invention, the acidic soil having a soil acidity of 4.0 was neutralized to an appropriate acidity of 6.1-7.8.
상술한 바와 같이, 본 발명에 의하면 종래 폐기되던 미세한 전로슬래그를 산성토양중화재로 활용될 수 있어 환경보호에 일조할 수 있으며, 나아가 저렴한 산성토양중화재를 제공할 수 있는 효과가 있는 것이다.As described above, according to the present invention, a fine converter slag that has been disposed of in the past may be used as an acid soil neutralizing agent, which may help to protect the environment, and further, may provide an inexpensive acid soil neutralizing agent.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019970069230A KR100481372B1 (en) | 1997-12-16 | 1997-12-16 | Manufacturing Method of Acid Soil Heavy Fire Using Converter Slag |
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| Application Number | Priority Date | Filing Date | Title |
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| KR1019970069230A KR100481372B1 (en) | 1997-12-16 | 1997-12-16 | Manufacturing Method of Acid Soil Heavy Fire Using Converter Slag |
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| KR19990050167A KR19990050167A (en) | 1999-07-05 |
| KR100481372B1 true KR100481372B1 (en) | 2005-06-20 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100384640B1 (en) * | 1998-12-11 | 2003-07-16 | 주식회사 포스코 | Manufacturing method of acid soil improver using slag |
| KR100438194B1 (en) * | 2001-07-26 | 2004-07-01 | 이경미 | Manufacturing method of siliceous manure used by natural mineral |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0459889A (en) * | 1990-06-28 | 1992-02-26 | Izumiyama Seido Kk | Production of soil conditioner from slag |
| JPH0693260A (en) * | 1992-09-10 | 1994-04-05 | Toyota Motor Corp | Soil additive |
| JPH07102237A (en) * | 1993-10-08 | 1995-04-18 | Daido Steel Co Ltd | Production of ph adjustor utilizing steelmaking slag |
| KR970006143A (en) * | 1995-07-06 | 1997-02-19 | 베르서 리베르크네흐트 | Method and apparatus for cross winding windings on yarn or band |
| KR19980048913A (en) * | 1996-12-18 | 1998-09-15 | 김종진 | Fertilizer for Soil Improvement Using Steel By-Products |
-
1997
- 1997-12-16 KR KR1019970069230A patent/KR100481372B1/en not_active IP Right Cessation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0459889A (en) * | 1990-06-28 | 1992-02-26 | Izumiyama Seido Kk | Production of soil conditioner from slag |
| JPH0693260A (en) * | 1992-09-10 | 1994-04-05 | Toyota Motor Corp | Soil additive |
| JPH07102237A (en) * | 1993-10-08 | 1995-04-18 | Daido Steel Co Ltd | Production of ph adjustor utilizing steelmaking slag |
| KR970006143A (en) * | 1995-07-06 | 1997-02-19 | 베르서 리베르크네흐트 | Method and apparatus for cross winding windings on yarn or band |
| KR19980048913A (en) * | 1996-12-18 | 1998-09-15 | 김종진 | Fertilizer for Soil Improvement Using Steel By-Products |
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| KR19990050167A (en) | 1999-07-05 |
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