KR920005402B1 - Preparing method of ceramic green material - Google Patents
Preparing method of ceramic green material Download PDFInfo
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- KR920005402B1 KR920005402B1 KR1019890020396A KR890020396A KR920005402B1 KR 920005402 B1 KR920005402 B1 KR 920005402B1 KR 1019890020396 A KR1019890020396 A KR 1019890020396A KR 890020396 A KR890020396 A KR 890020396A KR 920005402 B1 KR920005402 B1 KR 920005402B1
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- 239000000919 ceramic Substances 0.000 title claims description 14
- 238000000034 method Methods 0.000 title claims description 6
- 239000000463 material Substances 0.000 title description 6
- 238000010304 firing Methods 0.000 claims description 25
- 239000000440 bentonite Substances 0.000 claims description 23
- 229910000278 bentonite Inorganic materials 0.000 claims description 23
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 23
- 239000002893 slag Substances 0.000 claims description 21
- 239000002245 particle Substances 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000000465 moulding Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000005452 bending Methods 0.000 description 8
- 238000010521 absorption reaction Methods 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 238000005245 sintering Methods 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 239000010456 wollastonite Substances 0.000 description 4
- 229910052882 wollastonite Inorganic materials 0.000 description 4
- MKYBYDHXWVHEJW-UHFFFAOYSA-N N-[1-oxo-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propan-2-yl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(C(C)NC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 MKYBYDHXWVHEJW-UHFFFAOYSA-N 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000004017 vitrification Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 235000009245 Elaeagnus multiflora Nutrition 0.000 description 1
- 240000000298 Elaeagnus multiflora Species 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010433 feldspar Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000001694 spray drying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/141—Slags
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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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/10—Clay
- C04B14/104—Bentonite, e.g. montmorillonite
-
- 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
- C04B5/00—Treatment of metallurgical slag ; Artificial stone from molten metallurgical slag
- C04B5/06—Ingredients, other than water, added to the molten slag or to the granulating medium or before remelting; Treatment with gases or gas generating compounds, e.g. to obtain porous slag
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- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
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- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
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Abstract
내용 없음.No content.
Description
제1도, 4도 및 7도는 본 발명에 의해 제조된 세라믹소지의 소성온도에 따른 흡수율을 나타내는 그래프.1, 4 and 7 is a graph showing the absorption rate according to the firing temperature of the ceramic substrate produced by the present invention.
제2도, 5도 및 8도는 본 발명에 의해 제조된 세라믹소지의 소성온도에 따른 꺽임강도를 나타내는 그래프.2, 5 and 8 is a graph showing the bending strength according to the firing temperature of the ceramic body produced by the present invention.
제3도, 6도 및 9도는 본 발명에 의해 제조된 세라믹소지의 소성온도에 따른 소성수축을 나타내는 그래프이다.3, 6 and 9 are graphs showing the plastic shrinkage according to the firing temperature of the ceramic substrate produced by the present invention.
본 발명은 신속소성 세라믹소지의 제조방법에 관한 것이며, 특히 수쇄슬래그에 벤토나이트로 구성된 신속소성 세라믹소지 제조방법에 관한 것이다.The present invention relates to a method for producing a fast firing ceramic body, and more particularly, to a method for producing a fast firing ceramic body composed of bentonite in the hydrothermal slag.
보다 상세히는 본 발명은 수쇄슬래그에 벤토나이트를 첨가함으로써, 가열시 신속소성이 되는 수쇄슬래그와 벤토나이트로 구성되는 신속소성 세라믹제조방법에 관한 것이다.More specifically, the present invention relates to a method for producing a quick-fired ceramic composed of a hydro-baked slag and bentonite which is rapidly fired when heated by adding bentonite to the hydro-chain slag.
최근 구미여러나라에서는 1회 신속소성이란 소성법이 개발되어 소성시간을 대폭단축시키고 전 생산공정을 자동화함으로써 연료 및 노동력절감에 크게 기여하고있다. 이들 생산공정을 만족시키기 위해서는 재료조성의 선택이 매우 중요하며 신속소성소지로는 활석, 규회석, 회장석 및 투휘석이 보고되어있지만 이중에서 가장 산업적으로 널리쓰이고 있는 것이 규회석(wollastonite, CaO·SiO2)이다. 그러나 규회석은 천연원료로서 매장량이나 산출량이 적으며 순수한 것은 얻기가 힘들며, 신속소성용 소지에 사용하기위해서 심지어는 합성 규회석을 제조하여 사용하고 있는 것이다.Recently, in Gumi and other countries, the one-time firing method has been developed, greatly reducing the firing time and automating the entire production process, contributing to the reduction of fuel and labor. In order to satisfy these production processes, the selection of material composition is very important. Talc, wollastonite, feldspar and tupistone have been reported as fast firing materials, but wollastonite (CaOSiO 2 ) is the most widely used industrially. . However, wollastonite is a natural raw material with low reserves and yields, and it is difficult to obtain pure ones, and even manufactured and used synthetic wollastonite for use in rapid firing.
이에 본 발명의 목적은 종래의 신속소성용 소지와는 달리 수쇄슬래그와 벤토나이트를 이용한 신속소성 세라믹소지의 제조방법을 제공하는데 있다.Accordingly, an object of the present invention is to provide a method for producing a fast-fired ceramic body using a hydroslag slag and bentonite, unlike the conventional fast firing body.
상기와 같은 목적을 달성하기위해 본 발명에 의하면 입도 200메쉬(0.074mm)-325메쉬(0.044mm)의 수쇄슬래그 60-90중량%에 입도 200메쉬이하의 벤토나이트 40-10중량%를 첨가시켜 통상의 성형방법에 의해 성형체를 제조한후, 상기 성형체를 20℃/min 이하의 승온속도로 900℃-1150℃까지 승온시키고 그 온도범In order to achieve the above object, according to the present invention, by adding 40-10% by weight of bentonite having a particle size of 200 mesh or less to 60-90% by weight of crushed slag having a particle size of 200 mesh (0.074mm) -325 mesh (0.044mm) After the molded article is produced by the molding method of the above, the molded article is heated up to 900 ° C-1150 ° C at a heating rate of 20 ° C / min or less
[표 1]TABLE 1
본 발명에 사용되는 수쇄슬래그의 입도는 325메쉬이하로 너무 미세하면 1000℃ 이상의 온도에서 휨(Warping)형상과 변형이 일어나기쉬우며, 200메쉬이상의 큰입도를 갖는 경우 세라믹소지원료를 성형제로서 취급가능한 정도의 강도를 유지하지 못하게된다.If the particle size of the crushed slag used in the present invention is 325 mesh or less, the warping shape and deformation easily occur at a temperature of 1000 ° C. or higher, and when the particle size of the crushed slag is larger than 200 mesh, the ceramic support material is treated as a molding agent. You will not be able to maintain strength as much as possible.
한편 수쇄슬래그와 혼합되는 벤토나이트의 첨가량이 전체조성물의 10중량% 이하인 경우 세라믹소지원료를 성형제로서 취급가능한 정도의 강도를 유지하지 못하게되며, 40중량% 이상인 경우 소성수축율의 증가 및 부분적 휨 및 변형현상을 일으키고 또한 소지의 색상이 짙은 황색으로 되어 소지의 백색도가 저하되게된다.On the other hand, when the added amount of bentonite mixed with the crushed slag is less than 10% by weight of the total composition, it cannot maintain the strength that the ceramic support material can be handled as a molding agent, and when it is 40% by weight or more, the plastic shrinkage rate is increased and partial warpage and deformation It causes a phenomenon and the color of the body becomes dark yellow, so that the whiteness of the body becomes lower.
본 발명에 의해 제조된 세라믹소지의 화학조성은 CaO 25.62-39.56%, Al2O310.81-14.24%, SiO237.15-49.83%, Na2O 0.091-3.48%, K2O 0.81-2.63% 잔부는 2.46-12.5%이다.The chemical composition of the ceramic substrate prepared by the present invention is CaO 25.62-39.56%, Al 2 O 3 10.81-14.24%, SiO 2 37.15-49.83%, Na 2 O 0.091-3.48%, K 2 O 0.81-2.63% Wealth is 2.46-12.5%.
상기와 같이 조성된 본 발명의 배합원료소지는 소지성형체를 제조하기위하여 다음과 같은 통상의 공정을 거치게된다.The blended raw material of the present invention, prepared as described above, is subjected to the following conventional processes to prepare the molded body.
즉, 상기 조성의 수쇄슬래그와 벤토나이트의 배합원료소지를 혼합한후 수분을 첨가하고 혼합기에 의해 장시간 습식혼합하여 각소지용 원료를 제조하고 배합한 슬러리상태의 소지를 분무 건조장치에서 함수율을 8-10중량%로 조정하거나 또는 건조기에서 건조한후 수분을 첨가하여 함수율을 조정하고나서, 수분이 첨가된 원료소지를 판상형 사각몰드(40×100mm)에 넣고 소지성형체를 제조하게된다.That is, after mixing the mixed raw material of the hydrated slag and bentonite of the above composition, water is added and wet mixed by a mixer for a long time to prepare raw materials for each holding, and the slurry in the slurry state obtained by mixing the water content in the spray drying apparatus 8- After adjusting to 10% by weight or drying in a dryer to adjust the moisture content by adding water, the raw material is added to the plate-shaped square mold (40 × 100mm) to prepare a molded body.
상기 성형체를 소성하기위하여 본 발명에서는 성형후 소지성형체를 일정기간 자연건조시킨후 110℃의 건조기에서 건조하고 승온속도 20℃/mm 이하로 가열하여 900℃-1150℃에서 소성한다.In the present invention for firing the molded body, the molded body after molding is naturally dried for a certain period of time and then dried in a dryer at 110 ℃ and heated at a heating rate of 20 ℃ / mm or less and fired at 900 ℃ -1150 ℃.
승온온도가 20℃ 이상이되면 급격한 온도구배로 인하여 부분적으로 가벼운 휨현상이 발생되게되어 20℃이하의 승온속도가 바람직하다.When the temperature rises above 20 ° C., a slight warpage occurs due to a sudden temperature gradient, and thus the temperature rise rate below 20 ° C. is preferable.
한편 소성온도 900℃ 이하에서는 소결이 정상적으로 일어나지않으며, 1150℃ 이상의 경우 입자들간의 자화(vitrification)에 의해 휨현상과 변형이 심하게 일어나는 문제점이 있다.On the other hand, the sintering does not occur normally at a firing temperature of 900 ° C. or lower, and at 1150 ° C. or higher, there is a problem in that warpage and deformation occur severely by vitrification between particles.
이하 본 발명을 실시예에 따라 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to Examples.
[실시예 1-4]Example 1-4
200-300메쉬의 수쇄슬래그에 200메쉬 통과분의 벤토나이트를 하기 표2와 같은 함량으로 첨가시킨 소지원료를 전술된 바와 같은 공정에 의해 성형하여 소지성형체를 제조하였다.A small support body was prepared by molding a support material in which 200 to 300 mesh hydrolyzed slag was added with bentonite in a content of 200 mesh to the content as shown in Table 2 by the above-described process.
제조된 소지성형체를 승온속도 10℃/min로 900, 1000, 1100 및 1150℃의 소성온도에서 15분간 유지시킨후 노냉하고, 이로부터 제조된 소성체에 대한 흡수율, 꺽임강도 및 소성수축율을 측정하였으며, 그 결과를 각각 제1도, 2도 및 3도에 나타내었다.The obtained molded article was maintained at a firing temperature of 900, 1000, 1100 and 1150 ° C. for 15 minutes at a heating rate of 10 ° C./min, and then cooled. The absorption rate, the bending strength and the plastic shrinkage rate of the prepared molded body were measured. The results are shown in FIGS. 1, 2 and 3, respectively.
[표 2]TABLE 2
제1도에 의하면 흡수율은 고온에서 소성할수록 저하되며, 벤토나이트의 함량이 증가할수록 감소하는 경향을 나타내었고 전체적으로 10-16%의 범위내에 있다. 즉 반응성이 풍부한 수쇄슬래그의 양은 상대적으로 감소하고 벤토나이트의 함량이 증가할수록 벤토나이트에 함유된 다량의 알칼리성분(Na2O, K2O 등)이 수쇄슬래그와의 반응을 촉진시켰다. 또한 제2도에 의하면 꺽임강도값은 온도가 증가할수록, 벤토나이트의 함량이 증가할수록 현저하게 증가하며 900℃부터 80kgf/cm2이상의 꺽임강도값을 가지며 1100℃를 지나면서부터는 전체적으로 150kgf/cm2이상의 큰값을 나타내고 1150℃ 이상에서는 휨(Warping)현상이 심하게 일어남을 알 수 있다. 이는 1150℃를 이전에 소결이 거의 종료되고 그 이후부터는 입자들간의 약간의 자화(Vitrification)가 일어났기 때문인 것으로 추정된다.According to FIG. 1, the absorption rate decreases with sintering at high temperature, and decreases with increasing bentonite content, and is generally in the range of 10-16%. That is, the amount of reactive slag which is abundantly decreased, and as the content of bentonite increased, a large amount of alkali components (Na 2 O, K 2 O, etc.) contained in bentonite promoted the reaction with the chain slag. In addition, according to the second degree bending strength values with increasing temperature, increases significantly with increasing the amount of bentonite and having a flexural strength value of at least 80kgf / cm 2 from 900 ℃ after the 1100 ℃ seobuteoneun whole than 150kgf / cm 2 keungap It can be seen that warping phenomenon occurs severely above 1150 ° C. This is presumably because the sintering was almost finished before 1150 ° C., and after that, a slight Vitrification between the particles occurred.
제3도에 의하면 벤토나이트의 첨가량이 10wt%와 20wt%인 경우 1000℃에서 소성수축율이 감소하는 경향을 나타내었으며 이는 벤토나이트의 첨가량이 30wt%와 40wt%가 첨가되었을 경우와는 차이가 있으며 1000℃ 이후부터는 각 배합소지 모두 온도가 증가함에 따라 소성수축율이 증가하고 1100℃ 이후에서는 거의 팽창하고 있다. 30wt%와 40wt%의 벤토나이트를 첨가한 수쇄슬래그 200-230메쉬와 벤토나이트계에서는 1100℃에서 각각 0.1%와 0.15%의 팽창을 나타내고 있다.According to FIG. 3, when the amount of bentonite added is 10wt% and 20wt%, the plastic shrinkage rate decreases at 1000 ° C, which is different from the case where the amount of bentonite added is 30wt% and 40wt%. From each compound, the plastic shrinkage increased with increasing temperature and almost expanded after 1100 ℃. Hydrogenated slag with 30wt% and 40wt% bentonite added 200-230 mesh and bentonite system showed expansion of 0.1% and 0.15% at 1100 ° C, respectively.
[실시예 5-8]Example 5-8
230-270메쉬의 수쇄슬래그에 200메쉬 통과분의 벤토나이트를 하기 표 3과 같은 함량으로 첨가시킨 것을 제외하고는 실시예 1-4와 같은 방법으로 소성체를 제조한후 이에 대한 흡수율, 꺾임강도 및 소성수축율을 측정하였으며 그 결과를 각각 제4도, 5도 및 6도에 나타내었다.Except that the bentonite in the amount of 200 mesh passed to 230-270 mesh crushed slag was added to the content as shown in Table 3 below, and then the absorbent, bending strength and The plastic shrinkage was measured and the results are shown in FIGS. 4, 5 and 6, respectively.
[표 3]TABLE 3
[실시예 9-12]Example 9-12
270-325메쉬의 수쇄슬래그에 200메쉬통과분의 벤토나이트를 하기 표 4와 같은 함량으로 첨가시킨 것을 제외하고는 실시예 1-4과 같은 방법으로 소성체를 제조한후 이에 대한 흡수율, 꺾임강도 및 소성수축율을 측정하였으며, 그 결과를 각각 제7도, 8도 및 9도에 나타내었다.Except that the bentonite of 200 mesh pass through to 270-325 mesh crushed slag was added in the content as shown in Table 4, and then, the plastic body was prepared in the same manner as in Example 1-4, and then the absorption rate, bending strength, and Plastic shrinkage was measured, and the results are shown in FIGS. 7, 8, and 9, respectively.
[표 4]TABLE 4
상기 실시예 5-8과 실시예 9-12 화학조성도 실시예 1-4의 것과 동일하여 단지 수쇄슬래그의 입도가 서로다른 경우이다. 제4도와 제7도 그리고 제5도와 제8도에 의하면 흡수율과 꺽임강도는 온도가 증가할수록, 벤토나이트의 첨가량이 증가할수록 양호한 값을 나타내었으며 제6도와 제9도에 의하면 소성수축율은 1000℃에서 약간 감소하다가 그 이후의 온도에서는 증가하는 경향을 나타냄을 알 수 있다.The chemical compositions of Examples 5-8 and 9-12 are also the same as those of Examples 1-4, and only when the particle sizes of the hydrated slag are different. 4 and 7 and 5 and 8, the absorption rate and the bending strength showed good values as the temperature was increased and the amount of bentonite added was increased. It can be seen that it tends to decrease slightly and then increase at subsequent temperatures.
제2도, 제5도 및 제8도에 의하면 소성온도가 증가함에 따라 원료소지를 소성한후에 세라믹소지의 꺾임강도는 거의 직선적으로 증가함을 알 수 있으나, 소성온도가 900℃ 보다 낮은 조건에서는 소결이 정상적으로 일어나지 않기때문에 900℃ 이상의 소성온도를 유지해야하며 또한 소성온도가 1150℃ 보다 높을때는 휨현상과 변형이 심하게 일어난다. 이는 1150℃ 이전에 이미 소결이 거의 종료되고 그 이상의 온도에서는 입자간에 자화가 일어나기때문인 것으로 추정된다.According to FIGS. 2, 5, and 8, the bending strength of the ceramic body increases almost linearly after firing the raw material as the firing temperature increases. However, the firing temperature is lower than 900 ° C. Since this does not occur normally, the firing temperature should be maintained at 900 ° C. or higher, and when the firing temperature is higher than 1150 ° C., warpage and deformation will be severe. This is presumably because the sintering is almost finished before 1150 ° C. and magnetization occurs between the particles at a higher temperature.
[실시예 13]Example 13
본 실시예는 승온속도의 영향을 비교하기 위한 것이다.This embodiment is for comparing the effect of the temperature increase rate.
표 4의 실시예 8-12의 수쇄슬래그(270-325메쉬)와 벤토나이트의 중량비를 각각 90 :10, 80 : 20, 70 : 30. 60 : 40으로 조성한 소지의 성형한후 20℃/min의 승온속도로 1100℃까지 승온시킨후, 1100℃의 소성온도에서 15분간 유지하고 노냉하여 제조된 소성체에 대한 흡수율, 꺾임강도 및 소성수축율을 측정하였으며, 그 측정결과를 하기 표 5에 나타내었다.The weight ratio of the hydrated slag (270-325 mesh) and the bentonite of Example 4-12 in Table 4 was 90:10, 80:20, 70:30. After the temperature was raised to 1100 ° C. at a rate of temperature increase, the absorption rate, bending strength and plastic shrinkage rate of the fired body prepared by holding at a firing temperature of 1100 ° C. for 15 minutes and then cooled were measured, and the measurement results are shown in Table 5 below.
[표 5]TABLE 5
상기 실시예 1-12에서의 승온속도는, 실시예 1-4, 실시예 5-8, 및 실시예 9-12에서는 10℃/min으로 실시예 4에서는 20℃/min의 결과이며 이때 승온속도가 20℃/min 이상이 되면 급격한 온도구매로 인하여 부분적으로 가벼운 휨현상이 발생되게된다.The temperature increase rate in Example 1-12 is the result of 20 ° C / min in Example 4 at 10 ° C / min in Example 1-4, Example 5-8 and Example 9-12 and at this time If is more than 20 ℃ / min is due to the sudden temperature purchase partially light warpage occurs.
또한 본 발명의 실험에는 전기로를 사용하였으므로 실제현장 즉 대량생산이 가능한 조건에 맞추어 소성온도에서 15분동안 유지한후에 노냉하여 소성체를 제조하였다. 그러나 30-60분 유지하면 소성이 더욱 진행되지만 15분만으로도 충분히 요구하는 물성을 낼 수 있으므로 일부러 30-60분 유지할 필요는 없었다.In addition, since the electric furnace was used in the experiment of the present invention, the fired body was manufactured by blast furnace after maintaining the firing temperature for 15 minutes in accordance with the actual site, that is, the mass production conditions. However, if the 30-60 minutes is maintained, the firing proceeds further, but only 15 minutes can give the required physical properties.
상기한 바와 같이 본 발명에 의하면, 수쇄슬래그 200-325메쉬의 입도분포에 200메쉬 통과분의 벤토나이트를 첨가하여 세라믹소지를 제조함으로써 신속소성에 의해 소성시간을 단축하여 생산량의 증대 및 에너지 절약의 효과가 있을 뿐만 아니라 제철소의 부산물인 수쇄슬래그의 확대활용에 기여하는 효과가 있는 것이다.As described above, according to the present invention, by adding the bentonite of 200 mesh passes to the particle size distribution of the crushed slag 200-325 mesh to produce ceramic substrates, the firing time is shortened by rapid firing, thereby increasing production and saving energy. In addition to this, there is an effect that contributes to the expansion and utilization of crushed slag which is a by-product of steel mill.
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