KR900000033B1 - Method for producing cement clinkers - Google Patents
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- KR900000033B1 KR900000033B1 KR1019870014236A KR870014236A KR900000033B1 KR 900000033 B1 KR900000033 B1 KR 900000033B1 KR 1019870014236 A KR1019870014236 A KR 1019870014236A KR 870014236 A KR870014236 A KR 870014236A KR 900000033 B1 KR900000033 B1 KR 900000033B1
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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Description
본 발명은 속경성 광물을 함유하는 시멘트 클링커(clinker)를 회전로에 소성하여 안정된 속경성 시멘트 클링커를 제조하는 방법에 관한 것이다.The present invention relates to a method of producing a stable fast-hardening cement clinker by firing a cement clinker containing a fast-hard mineral in a rotary furnace.
속경성 광물을 함유하는 클링커를 사용하여 제조한 초속경성 시멘트는 보통 포틀란드 시멘트와는 달리 광물조성으로 3CaO, SiO2(이하 C3S라 한다)고용체, 11CaO7Al2O3CaX2(이하 C11A7CaX2, 라 하고 이때 X는 할로겐원소이다)고용체, 2CaO, SiO2(이하 C2S라 한다)고용체 철고용체 및 CaSO4)로 구성되어 있다.Ultra-fast cement manufactured using clinker containing fast-hardening minerals, unlike portland cement, is composed of 3CaO, SiO 2 (hereinafter referred to as C 3 S) solids, 11CaO7Al 2 O 3 CaX 2 (hereinafter C 11) A 7 CaX 2 , wherein X is a halogen element) solid, 2CaO, SiO 2 (hereinafter referred to as C 2 S) solid iron solid solution and CaSO 4 ).
이러한, 초속경성 시멘트는 물과 접촉하게 되면 곧 C11A7CaX2(X는 할로겐원소)광물이 물에 용해하여 시멘트 중에 존재해 있는 유리석 및 칼슘실리케이트광물(C3S고용체)의 용해 생성물인 Ca(OH)2와 곧바로 반응하여 칼슘알루미네트 수화물 및 알루미네이트 수화물을 생성한 후, 다시 몇분내에 시멘트에 첨가된 석고와 반응하여 에트린자이트 및 칼슘알루미노 모노설페이트 수화물을 생성시켜 경화체가 2시간 정도에서 실용강도를 발형하는 초속경성을 나타내는 것이다.The super hard cement is a product of dissolution of C 11 A 7 CaX 2 (X is a halogen element) mineral in water and the minerals of calcium and silicate (C 3 S solid solution) present in the cement. After reacting directly with phosphorus Ca (OH) 2 to produce calcium aluminate hydrate and aluminate hydrate, it is then reacted with gypsum added to cement within a few minutes to produce ethrinzite and calcium alumino monosulfate hydrate. It shows the super-speed stiffness to develop the practical strength in about 2 hours.
또한, 이러한 시기 이후의 초기 및 장기강도 발현은 보통 포틀란드 시멘트에서와 같이 칼슘실리케이트광물의 수화반응에 의해 칼슘실리케이트 수화물을 생성시켜 계속적으로 경화체가 강도 증진을 하기 때문에 장기간 걸쳐서 높고 안정된 강도를 발현하게 된다.In addition, the initial and long-term strength development after this period produces calcium silicate hydrates by the hydration reaction of calcium silicate minerals, as in portland cement, so that the hardened body continuously improves its strength, resulting in high and stable strength over a long period of time. do.
그러나, 실제로 보통 포틀란드 시멘트 클링커중에 존재하는 C2S고용체는 β형이 거의 대부분을 차지하고 있는데, 이는 시멘트 조합원료 중에 미량성분으로 존재하는 Ba, B, P, Y, Sr등의 원소가 β-C2S고용체 구조를 상온에서도 안정화 시키기 때문이다.In practice, however, the most common form of C 2 S solids in portland cement clinker is β type, which means that elements such as Ba, B, P, Y, Sr, etc., present as trace components in cement raw materials are β- This is because the C 2 S solid solution stabilizes at room temperature.
그러나 속경성 클링커에서는 원료 중에 유입되는 미량성분 만으로는 β-C2S고용체가 안정화 되지 못하고, 냉각중에 β-C2S고용체가 γ-C2S 고용체로 전이가 일어나게 된다. 그렇게 되면 β-C2S고용체와 γ-C2S고용체는 서로 부피가 다르기 때문에 이들 광물의 전이에 따라 클링커내에서 부피변화가 일어나 가루분말(dusting)화 되어 버린다.However, in the fast-hard clinker, the β-C 2 S solid solution is not stabilized only by the trace component introduced into the raw material, and the β-C 2 S solid solution is transferred to the γ-C 2 S solid solution during cooling. Then, since the β-C 2 S solid solution and the γ-C 2 S solid solution are different in volume from each other, the volume change occurs in the clinker due to the transition of these minerals, resulting in powdering.
한편, 속경성 클링커 제조시 첨가되는 CaF2는 클링커와 반응시 C3S고용체에 일부 고용이 되는데, CaF2의 고용량이 0.74%이상이 되면 C3S고용체는 C2S고용체와 f-CaO로 분해되게 된다.On the other hand, CaF 2 added during the manufacture of fast curing clinker is partially dissolved in the C 3 S solid solution when reacted with the clinker. When the solid solution of CaF 2 is more than 0.74%, the C 3 S solid solution is converted into C 2 S solid solution and It will decompose.
특히, 냉각 과정에서 주위에 수분이 존재하면 분해반응이 가속화 되는데 온도범위가 1150-1200℃에서 분해반응이 제일 활발하게 일어나게 된다. C2S고용체는 다음 그림 1에서 보는 바와 같이 온도에 따라 그 결정 구조가 변하게 된다.In particular, the presence of moisture in the environment during the cooling process accelerates the decomposition reaction, the decomposition reaction occurs most actively in the temperature range of 1150-1200 ℃. As shown in Figure 1, the C 2 S solid solution changes its crystal structure with temperature.
그림 1. C2S고용체 전이 다이어그램.Figure 1.C 2 S solid solution transition diagram.
상기 그림에서 보는 바와 같이 500℃이하에서는 γ-C2S고용체가 안정화 되게 된다.As shown in the figure above γ-C 2 S solid solution is stabilized below 500 ℃.
그러나, 종래 속경성 클링커를 제조하는데 있어서, 속경성 클링커의 원료 조합물은 소성이 완결되는 온도범위가 협소하고, 소성시 생성되는 광물, 액상의 성질 및 양이 보통 포틀란드 시멘트 클링커와 매우 다르기 때문에, 소성 온도범위(소성반응이 종결된다고 간주되는 유리석회가 1.5중량%되는 온도와 조합물이 용융된 상태의 온도범위)에서 소성한다고 하더라도 안정된 클링커를 얻기가 매우 어렵고, 설혹 공정제어로 인하여 이러한 소성 온도범위에서 클링커 광물이 생성되었다 하더라도 클링커 냉각 중에 그 광물 생성반응시 생성된 β-C2S고용체 및 냉각중 C3S고용체에서 분해되어 생성된 β-C2S고용체가 γ-C2S고용체로 상전이가 일어나게 된다.However, in the manufacture of conventional fast hard clinker, the raw material combination of fast hard clinker has a narrow temperature range at which firing is completed, and the properties and amounts of minerals and liquid phases produced during firing are very different from those of ordinary Portland cement clinker. It is very difficult to obtain a stable clinker even if it is fired in the firing temperature range (the temperature range in which the combination of molten glass and lime is considered to be terminated by 1.5% by weight). Although the clinker minerals was produced at a temperature range generated when the mineral-producing reaction during clinker cooling β-C 2 S solid solution and cooling to decompose in the C 3 S solid solution of β-C 2 S solid solution is γ-C 2 S solid solution produced Phase transition occurs.
이러한 상전이에 의해서 클링커는 β-C2S고용체와 γ-C2S고용체의 체적이 다르기 때문에 클링커 내에서 체적변화가 생겨 가루분말화 현상을 일으켜 클링커 제조시 제조공정을 곤란하게 할 뿐만 아니라 상전이 결과 생성된 γ-C2S고용체는 활성이 없기 때문에 이러한 클링커를 사용하여 시멘트를 제조하더라도 경화체의 응결 및 압축강도 등의 특성은 저하되게 된다.Due to this phase transition, the clinker has a different volume between β-C 2 S solid solution and γ-C 2 S solid solution, causing volume change in the clinker, causing powder powdering, making the manufacturing process difficult during clinker production. Since the produced γ-C 2 S solid solution is inactive, even when cement is manufactured using such clinker, properties such as condensation and compressive strength of the cured product are lowered.
따라서, 안정된 클링커를 얻기 위해서는 C3S고용체 및 β-C2S고용체를 안정화 시켜야 되는바, 이러한 안정화를 위한 메카니즘은 C2S 및 C3S에 에너지를 부여해 주게 되면 결정구조의 격자는 안정화 하려는 경향으로 운동을 하게 되나, C2S와 C3S가 계속해서 열적 에너지를 받게 되면 엔트로피가 높아져 그 구조는 파괴되고 마침내 용융되어 버리게 되므로 속경성 클링커를 안정하게 제조하는 방법으로, 소성 온도범위를 확대하고, 광물을 안정화시키기 위하여 CaSO4를 첨가하는 방법(일본특개소 47-39924)과 조합원료를 조립하여 클링커화 반응시 균질하게 열적 에너지를 가해주는 방법(일본특개소 49-30682) 및 CaO를 석회포화도 보다 약간 과잉되게 첨가하고 동시에 TiO2등을 첨가하여 소성하거나, 여기에 석회질 원료 대신 생석회나 소석회를 사용하여 석회석의 탈탄산 등에 의한 흡열 반응을 없애주어 안정하게 열을 공급함으로써 클링커의 가루분말화 현상을 방지하는 방법(일본특개소 48-12324)등이 제안되어 있었다.Therefore, in order to obtain a stable clinker, C 3 S solid solution and β-C 2 S solid solution must be stabilized. The mechanism for stabilization gives energy to C 2 S and C 3 S. When C 2 S and C 3 S continue to receive thermal energy, the entropy increases and the structure is destroyed and finally melted. CaSO 4 is added to stabilize the minerals and stabilizes the minerals (Japanese Patent Laid-Open No. 47-39924) and assembling raw materials to homogeneously apply thermal energy during the clinker reaction (Japanese Patent Laid-Open No. 49-30682) and CaO to a slightly excess to be added at the same time and using the calcium oxide or calcium hydroxide instead of the calcareous material herein such as TiO 2 is added to the plastic, or, more lime saturation analysis De-seat the like method to prevent the development of clinker powder powdered by supplying heat stable by eliminating the endothermic reaction caused by acid (Japanese Patent 48-12324 places) were proposed.
그러나, 이러한 방법으로 클링커를 제조하더라도 회전로에서는 여전히 소성 온도범위가 좁고, 가루분말화등이 발생하는등 여러가지 문제점이 야기되어 안정된 클링커를 제조하기가 곤란하였다.However, even if the clinker is manufactured in this way, it is difficult to produce a stable clinker because of various problems such as the firing temperature range is still narrow in the rotary furnace, powder powdering and the like.
특히, 광물 안정제로서 SO3를 첨가하게 되면 SO3성분은 로내에서 첨가된 화합물에 의해 분해되어 로내에서 순화되거나 Kiln밖으로 배출되게 되므로, 이러한 특성을 감안하여 SO3를 과량으로 첨가하게 되면 형석과 함께 융제 역할을 하기 때문에 회전 로내에서 코팅이나 링을 형성하여 공정불안을 일으키고, 또한 광물상으로는 SO3가 칼슘실리케이트광물을 안정화 시키고 여분의 성분이 칼슘알루미노설페이트(CmAnCaSO4) 화합물을 생성시켜 클링커 및 시멘트의 물성 저하를 야기시키게 된다. 이러한 현상을 방지하기 위하여 소량 첨가하게 되면 쉽게 휘발되어 그 효과가 나타나지 않기 때문에 공정제어가 곤란하게 된다.In particular, when the addition of SO 3 as a mineral stabilizer SO 3 component is decomposed by the the compound is added in the furnace when or purified from the furnace so be discharged to the outside of the Kiln, the addition of SO 3 in an excess amount in view of the above properties with a fluorite It acts as a flux, forming a coating or ring in a rotary furnace, causing process anxiety, and in the mineral phase, SO 3 stabilizes the calcium silicate mineral and an extra component produces a calcium aluminosulfate (CmAnCaSO 4 ) compound, which leads to clinker and cement. It causes a decrease in physical properties. In order to prevent such a phenomenon, when a small amount is added, the process is difficult to volatilize, and the effect thereof does not appear.
또 조합원료를 조립(造粒)하거나 석회석 원료 대신에 생석회, 소석회를 사용하는 방법으로 클링커링 반응을 시킨다 하더라도 그 효과가 명백하게 나타나지 않아 회전로에서의 운전이 곤란하게 된다.In addition, even if the clinker reaction is carried out by assembling the raw materials or using quicklime or slaked lime instead of limestone, the effect is not apparent, making it difficult to operate in a rotary furnace.
본 발명은 이러한 문제점을 해결하기 위하여 속경성 광물을 함유하는 조합원료에서 클링커 광물을 안정화시키고 소성범위를 넓혀주는 안정제를 첨가함으로써 회전로에서 제조가 용이하고 조기 응결 및 조기강도 등의 품질 특성이 우수한 속경성 클링커를 제조하는 방법을 제공하는데 그 목적이 있다.The present invention is easy to manufacture in a rotary furnace by adding a stabilizer for stabilizing the clinker mineral in the raw material containing fast-hardening minerals and to broaden the plastic range in order to solve this problem, and excellent quality characteristics such as early setting and early strength It is an object of the present invention to provide a method for manufacturing a fast hard clinker.
또 다른, 본 발명의 목적은 조합원료중에서 Mg, Fe2O3함량을 감소시켜 또 분말도를 높게 미분쇄 함으로써 더욱 안정된 클링커를 얻을 수 있고, 소성 온도범위 또한 넓어져 회전로에서 용이하게 속경성 시멘트 클링커를 제조하는 방법을 제공하는데 있다.Another object of the present invention is to reduce the content of Mg, Fe 2 O 3 in the raw material and to further finely pulverize the powder to obtain a more stable clinker, and also to increase the firing temperature range, so that the fast hardening in the rotary furnace is easy. It is to provide a method for producing a cement clinker.
이하 본 발명을 상세하게 설명하면 다음과 같다. 클링커 광물조성을 C11A7CaX2(X는 할로겐원소)고용체 1∼50중량%, C3S고용체 20∼70중량%, C2S고용체 0∼40중량%, 철고용체 0∼10중량%를 함유하는 조합원료에 클링커화 반응결과 생성되는 C2S고용체 및 C3S고용체의 광물 안정제로서 Ba산화물 및 그염, B산화물 및 그염, P산화물 및 그염, Y산화물 및 그염 등에서 1종 또는 2종 이상을 0.1∼5중량%정도로 첨가시켜서 됨을 특징으로 하는 속경성 시멘트 클링커의 제조방법인 것이다.Hereinafter, the present invention will be described in detail. Clinker mineral composition 1 to 50% by weight of C 11 A 7 CaX 2 (X is a halogen element), 20 to 70% by weight of C 3 S solid solution, 0 to 40% by weight of C 2 S solid solution, 0 to 10% by weight of iron solid solution As a mineral stabilizer of C 2 S solid solution and C 3 S solid solution produced as a result of clinker reaction on the containing raw materials, one or two or more of Ba oxide and its salt, B oxide and its salt, P oxide and its salt, Y oxide and its salt, etc. It is a method for producing a fast cement cementer characterized in that the addition of about 0.1 to 5% by weight.
이하 본 발명을 더욱 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in more detail.
본 발명에 따른 속경성 클링커로 제조된 시멘트는 다른 방법으로 제조된 시멘트보다 우수한 강도 발현을 하게 되는 이유는 클링커 광물이 안정제에 의하여 고온에서 에너지를 받아 고용되었기 때문에 활성이 보다 커져서 물과 반응시 엔트로피를 낮게 하려는 경향에 의해 쉽게 안정화되고 경화체의 물리적 성능 특히 조기에 강도발현이 높게 나타나는 것이다.Cement prepared by fast-linking clinker according to the present invention exhibits superior strength than cement produced by other methods because the clinker mineral is employed at high temperature by the stabilizer and is employed to increase its activity, resulting in greater entropy when reacted with water. It is easily stabilized by a tendency to lower the mechanical strength of the cured product, particularly high strength expression is shown early.
여기에서, 첨가제로는 Ba, B, P, Y산화물 및 그염을 1종 또는 2종 이상을 선택하여 0.1-5중량%를 조합원료에 첨가시켜 클링커를 제조하는바, 만일 첨가제의 함량을 0.1중량%이하로 하게 되면 광물안정 효과가 미미하여 회전로에서 제조가 곤란하게 되며, 또한 5중량%이상 첨가시에는 첨가물의 화합물이 생성되어 광물 생성반응을 저해시키고 또 제조된 시멘트의 조기경화 및 조기강도 발현에 나쁜 영향을 미치게 된다. 이러한 첨가제는 0.5-3.0중량%에서 가장 우수한 효과를 나타내게 된다.Here, the additives are selected from Ba, B, P, Y oxides and salts thereof, one or two or more of which is added 0.1-5% by weight to the raw material to produce a clinker, if the content of the additive 0.1% If it is less than%, it is difficult to manufacture in a rotary furnace due to the inferior mineral stabilization effect. Also, when more than 5% by weight of additive is added, compound of additive is produced, inhibiting the mineral formation reaction and expressing early curing and early strength of the manufactured cement. Will adversely affect. These additives have the best effect at 0.5-3.0% by weight.
또한, 속경성 클링커를 회전로에서 더욱 용이하게 제조하기 위해서는 클링커 광물 생성반응시 액상량 증가에 영향을 주는 MgO 및 Fe2O3의 함량을 3중량%이하로 억제시켜 조합원료를 제조하는 것이 좋다.In addition, in order to more easily manufacture a fast-hard clinker in a rotary furnace, it is preferable to prepare a raw material by suppressing the content of MgO and Fe 2 O 3 that affects the amount of liquid phase in the clinker mineral formation reaction to 3 wt% or less. .
왜냐하면 Fe2O3함량이 다량 존재하게 되면 C11A7CaX2(X는 할로겐원소)고용체의 광물 생성에 쓰여지는 Al2O3가 C4AF광물 생성에 쓰여지기 때문에 C11A7CaX2(X는 할로겐원소)고용체의 광물 생성량이 적게 되어 제조된 시멘트의 품질특성이 저하되게 되는 요인이 되며, 동일 품질특성을 얻기 위해서 Al2O3함량을 증가시키게 되면 Al2O3화합물인 C11A7CaX2(X는 할로겐원소)고용체 및 C4AF고용체가 모두 클링커에서 액상화되어 냉각된 후 간극물질로 되기 때문에 클링커화 반응시 액상량이 증가되어 더욱 더 소성 온도범위가 협소하게 된다.Because the large amount of Fe 2 O 3 is present, C 11 A 7 CaX 2 (X is a halogen element) Al 2 O 3 used to generate minerals of the solid solution is used to generate C 4 AF minerals C 11 A 7 CaX 2 (X is a halogen element) The amount of minerals produced by the solid solution is reduced, which is a factor that degrades the quality characteristics of the manufactured cement, and if the Al 2 O 3 content is increased to obtain the same quality characteristics, C 11 which is an Al 2 O 3 compound Since both the A 7 CaX 2 (X is a halogen element) solid and the C 4 AF solid are liquefied in the clinker and cooled to form a gap material, the amount of liquid phase increases during the clinker reaction, thereby further narrowing the firing temperature range.
MgO의 영향 역시 함량을 증가시키게 되면 클링커링 반응시 융제 역할 및 클링커 광물 생성반응시 액상으로 존재하기 때문에 액상량이 증가하게 되며, 클링커중에 f-MgO가 존재하게 되어 시멘트 제조 후 물과 반응할때 부피팽창을 야기시키기 때문에 경화체가 붕괴되어 경화체의 안정도에 나쁜 영향을 준다.Increasing the content of MgO also increases the amount of liquid because it acts as a flux during the clinker reaction and as a liquid phase during the clinker mineral formation reaction, and f-MgO is present in the clinker. Because it causes swelling, the cured product collapses, adversely affecting the stability of the cured product.
따라서, 이러한 물질을 3.0%이하로 규제함으로서 회전로에서 클링커 제조를 더욱 용이하게 할 수 있으며, 제조된 시멘트의 조기응결, 조기강도, 안정도 등의 특성을 더욱 향상시킬 수 있다.Therefore, by controlling the material to 3.0% or less, it is possible to facilitate the manufacture of clinker in a rotary furnace, and to further improve characteristics such as premature coagulation, early strength, and stability of the manufactured cement.
상기 속경성 클링커를 제조하는데 있어서 조합원료의 분말도를 88μ잔사가 20중량%이하가 되도록 미세하게 하면 입자의 접촉 면적이 넓어지기 때문에 클링커 생성반응이 균질하게 되며, 이 결과 소성온도가 저하되어 소성이 용이하게 된다. 또한 안정제의 역할로 인하여 조합원료의 용융온도는 더욱 상승되기 때문에 전체적으로는 소성 온도범위의 확대를 초래하여 회전로에서 속경성 클링커의 제조를 더욱 용이하게 해준다.In the preparation of the fast-hard clinker, when the powder of the raw material is made fine so that the amount of 88μ residue is 20% by weight or less, the contact area of the particles becomes wider, and thus the clinker formation reaction becomes homogeneous. This is facilitated. In addition, since the melting temperature of the raw material is further increased due to the role of a stabilizer as a whole, the firing temperature range is expanded, thereby facilitating the manufacture of fast-hard clinker in a rotary furnace.
이하 본 발명을 실시예에 의거 더욱 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in more detail with reference to Examples.
[실시예 1]Example 1
다음 표 1과 같은 광물조성을 갖고 광물 안정제로서 BaO, Y2O3, B2O3, P2O5를 첨가하여 조합원료를 제조하여 안정되게 열을 공급하여 반응이 일어날 수 있도록 조합원료를 88μ잔사가 10%되게끔 분쇄하여 0.6m(직경)×9cm(길이)의 회전로에서 40kg/hr의 양으로 일정하게 원료를 투입하면서 온도를 변화시키며 클링커를 소성하여 그 상태를 관찰하고 물리성능을 측정하여 그 결과를 다음 표 1에 나타내었다.Next, as shown in Table 1, as a mineral stabilizer, BaO, Y 2 O 3 , B 2 O 3 , P 2 O 5 were added to prepare a raw material, and the raw material was stably supplied with 88 μ so that reaction could occur. The residue is pulverized to 10%, and the raw material is continuously fed in an amount of 40 kg / hr in a rotary furnace of 0.6 m (diameter) x 9 cm (length), and the temperature is changed by firing the clinker to observe the state and physical performance. The results are shown in Table 1 below.
실험에서 사용한 원료는 국내 부존자원 원료를 주로 사용하였다.The raw materials used in the experiments mainly used domestic resources.
즉, 클링커 조성광물의 CaO원으로서 석회석 및 고로슬라그를 사용하고, Al2O3원으로는 알루미나쉐일, 명반석, 고령토, 고로슬라그 및 보오그사이트 등을 사용하였고 할로겐 원소로서는 형석을 사용하였다.That is, limestone and blast furnace slag were used as CaO sources of clinker composition minerals, and alumina shale, alum, kaolin, blast furnace slag and bogsite were used as Al 2 O 3 sources, and fluorite was used as the halogen element.
[표 1]TABLE 1
시멘트 제조는 소성한 클링커 80부, 황산염을 20부 첨가하여 브레인(Blaine) 비표면적 500㎠/g으로 분쇄하여 물리적 성능 시험을 하였다.Cement was prepared for the physical performance test by crushing to a brain specific surface area of 500 cm2 / g by adding 80 parts of calcined clinker and 20 parts of sulfate.
상기의 결과에서 본 발명에 사용한 광물 안정제는 비교예에서 사용한 경우보다 소성가능 온도범위가 넓고 클링커의 소성상태 역시 양호하며 물리적 성능 특성도 극히 우수하였다.In the above results, the mineral stabilizer used in the present invention had a wider sinterable temperature range than that used in the comparative example, the calcination state of the clinker was also good, and the physical performance characteristics were extremely excellent.
[실시예 2]Example 2
속경성 클링커 제조 시멘트 특성에 영향이 거의 미치지 않고 클링커링 반응시 액상량에 영향을 미치는 인자인 Fe2O3및 MgO를 규제하여 클링커를 조제하면 액상량이 적게 생성되기 때문에 소성 온도범위가 넓어진다.Manufacture of fast hard clinker Almost no effect on the cement properties, and when the clinker is prepared by regulating Fe 2 O 3 and MgO, factors affecting the amount of liquid phase during the clinker reaction, the calcining temperature is widened.
이들 인자의 영향에 따라 소성 온도범위 변화를 파악하고자 안정제로 BaO를 1중량%첨가하여 조합원료를 만든 후 회전로에서 소성하여 그 결과를 다음 표 2에 나타내었다.In order to grasp the change in the firing temperature range according to the influence of these factors, 1% by weight of BaO was added as a stabilizer to prepare a raw material, and then fired in a rotary furnace.
[표 2]TABLE 2
이 결과에서 요업원료의 특성에 따라 액상 생성물질이 약간만 증가하여도 소성가능 온도범위는 매우 협소하게 되는 것을 알수 있고 MgO는 시멘트의 안정도에 악 영향을 미치게 되므로 회전로에서 속경성 클링커 제조시에는 MgO 및 Fe2O3원소를 원료로의 유입을 적극 규제하여야 한다.The results show that even if the liquid product is slightly increased depending on the characteristics of the ceramic raw material, the sinterable temperature range becomes very narrow, and MgO adversely affects the stability of cement. And the influx of Fe 2 O 3 elements into the raw material should be actively regulated.
[실시예 3]Example 3
클링커 광물 생성반응시 균질한 반응을 유도하기 위하여 클링커 조합원료를 크게 분쇄하여 입자와 입자의 접촉면을 증가시켜 주면 열전달이 균질화 되어 클링커 광물 생성반응이 용이하게 되며 소성 온도 범위가 증가된다.In order to induce a homogeneous reaction during the clinker mineral formation reaction, when the clinker combination material is greatly crushed to increase the contact surface of the particles, the heat transfer is homogenized, thereby facilitating the clinker mineral formation reaction and increasing the firing temperature range.
여러차례의 실험결과 조합원료는 88μ잔사가 20중량%이하가 적당하며 특히 7중량%이하일 경우에는 균질 소성이 되어짐을 X-ray회절분석 및 반사현미경을 통하여 확인하였다.As a result of several experiments, it was confirmed through X-ray diffraction analysis and reflection microscopy that the combined raw material was homogeneous plasticity when the amount of 88μ was less than 20% by weight, especially when it was less than 7% by weight.
다음 표 3에 사용한 조합원료는 실시예 2에서 사용한 조합원료(C4AF고용체 5%함유)인 것을 사용하였다.As a combination raw material used in Table 3 below, a combination raw material (containing 5% of C 4 AF solid solution) used in Example 2 was used.
[표 3]TABLE 3
상기 실험결과 조합원료의 잔사가 낮을수록 입자간의 접촉면이 넓어질수록 반응이 쉽게 일어나 광물 생성이 안정화 되는 것을 알 수 있다.As a result of the experiment it can be seen that the lower the residue of the raw material of the combination, the wider the contact surface between particles, the more easily the reaction occurs to stabilize the mineral production.
상기의 실시예에 의한 결과 광물조성으로는 바람직하게 C11A7CaF2고용체 5-50중량%, C3S고용체 20-70중량%, C2S고용체 0-30중량%, 철고용체 0-10%를 함유하는 조합원료를 안정하게 회전로에서 소성하기 위해서는 Ba, B, P 및 Y원소가 1종 또는 2종 이상 광물 안정제로서 첨가되어야 함을 알 수 있고 더욱 효과를 얻기 위해서는 Fe 및 Mg원소를 규제시키고, 조합원료의 분말도를 높게하여 입자간 접촉면을 넓게 하여 소성하면 운전이 용이해지고 광물 생성 및 안정된 클링커를 제조할 수 있음을 알 수 있다.As a result mineral composition according to the above examples, preferably 5-50% by weight of C 11 A 7 CaF 2 solid solution, 20-70% by weight of C 3 S solid solution, 0-30% by weight of C 2 S solid solution, iron solid solution 0- Ba, B, P, and Y elements should be added as one or two or more mineral stabilizers in order to stably fire a combination raw material containing 10% in a rotary furnace, and Fe and Mg elements to obtain further effects. It can be seen that by controlling the content of the raw material and increasing the powder level of the raw material to increase the interfacial contact surface and sintering, it is easy to operate and produce a stable clinker.
이와 같이 본 발명은 속경성 클링커를 회전로에서 용이하게 제조하고 또한 우수한 품질 특성을 갖는 속경성 클링커를 얻는 방법에 그 특징이 있는 것이다.As described above, the present invention is characterized by a method of easily producing a fast hard clinker in a rotary furnace and obtaining a fast hard clinker having excellent quality characteristics.
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| KR1019870014236A KR900000033B1 (en) | 1987-12-14 | 1987-12-14 | Method for producing cement clinkers |
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| KR1019870014236A KR900000033B1 (en) | 1987-12-14 | 1987-12-14 | Method for producing cement clinkers |
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| KR900000033B1 true KR900000033B1 (en) | 1990-01-18 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8834625B2 (en) | 2010-11-10 | 2014-09-16 | Ecomaister Co., Ltd. | Ultra-rapid hardening hydraulic binder using reduced slag powder, and method of preparing the same |
| KR20150044525A (en) * | 2013-10-16 | 2015-04-27 | 재단법인 포항산업과학연구원 | Cement composition for rapid hardening using blast furnace slag and method for preparing the same |
| US10065892B2 (en) | 2012-07-25 | 2018-09-04 | Jin-Man Kim | Hydraulic binder composition using rapidly-cooled steelmaking reduced slag powder, and method of preparing the same |
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1987
- 1987-12-14 KR KR1019870014236A patent/KR900000033B1/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8834625B2 (en) | 2010-11-10 | 2014-09-16 | Ecomaister Co., Ltd. | Ultra-rapid hardening hydraulic binder using reduced slag powder, and method of preparing the same |
| US10065892B2 (en) | 2012-07-25 | 2018-09-04 | Jin-Man Kim | Hydraulic binder composition using rapidly-cooled steelmaking reduced slag powder, and method of preparing the same |
| KR20150044525A (en) * | 2013-10-16 | 2015-04-27 | 재단법인 포항산업과학연구원 | Cement composition for rapid hardening using blast furnace slag and method for preparing the same |
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