KR960011315B1 - Process for the preparation of clay-ware - Google Patents

Process for the preparation of clay-ware Download PDF

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Publication number
KR960011315B1
KR960011315B1 KR1019930012490A KR930012490A KR960011315B1 KR 960011315 B1 KR960011315 B1 KR 960011315B1 KR 1019930012490 A KR1019930012490 A KR 1019930012490A KR 930012490 A KR930012490 A KR 930012490A KR 960011315 B1 KR960011315 B1 KR 960011315B1
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South Korea
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clay
plasticity
ball mill
dry
crushing
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KR1019930012490A
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Korean (ko)
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KR950003209A (en
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요시미쓰 스도
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요시미쓰 스도
김종현
김상춘
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00Clay-wares
    • C04B33/02Preparing or treating the raw materials individually or as batches
    • C04B33/04Clay; Kaolin
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/62605Treating the starting powders individually or as mixtures
    • C04B35/6261Milling

Abstract

The process for preparing a pottery mud by crushing pottery stone containing clay minerals by means of a blow or frictional, force comprises mixing a clay having insufficient plasticity with pottery stone; crushing with shock by dry-ballmill; and then giving plasticity to clay crystals by the direct energy, to improve the molding property.

Description

도석질도토의 조제법Preparation of Ceramic Clay

본 발명은 도자기 산업에 있어서 쓰이는 도토의 가소성을 높혀 성형성을 개선하는 방법에 관한 것이다.The present invention relates to a method for improving moldability by increasing plasticity of clay used in the ceramic industry.

규석, 정석 등 (이하, 단순히 도석이라 함)을 분쇄하여 도토를 조제하는 데는 습식볼밀, 건식볼밀, 스탬퍼 등이 사용된다. 분쇄방법에 의하여 입도분포, 가소성이 달라서 가소성이 부족할 경우는 고가소성 점토 또는 유기증점제를 첨가하여 가소성을 부여하고 있다.A wet ball mill, a dry ball mill, a stamper, etc. are used to prepare a clay by pulverizing silica, crystallization, etc. (hereinafter, simply referred to as pottery). When the plasticity is insufficient due to different particle size distribution and plasticity by pulverization, high plasticity clay or organic thickener is added to provide plasticity.

급식볼밀에 의한 분쇄는 능률은 좋지만 가장 가소성이 부족하고, 건식볼밀은 능률, 가소성과 더불어 습식볼밀과 스탬퍼의 중간에 위치한다. 따라서, 고점성 점토의 첨가는 피할 수 없고, 고점성 점토에 함유하고 있는 티탄 등의 바람직하지 못한 불순물의 영향을 회피할 수 없다. 스탬퍼에 의한 분쇄는 가장 가소성을 얻기 쉬우나 본래 점토광물이 적은 도석은 필요한 가소성을 얻을 수 없으므로 고점성 점토의 첨가를 필요로 하고, 또, 능률이 나쁘고 경제적 잇점이 적다.Grinding by the feeding ball mill is the most efficient but the least plastic, dry ball mill is located between the wet ball mill and the stamper with efficiency and plasticity. Therefore, the addition of highly viscous clay cannot be avoided, and the influence of undesirable impurities such as titanium contained in the highly viscous clay cannot be avoided. Grinding by stamper is the most plasticized, but pottery, which is inherently low in clay minerals, does not obtain the required plasticity, which requires the addition of highly viscous clay, and it is inefficient and less economical.

상기와 같이 종래에 있어서의 도석의 분쇄방법은 부족한 가소성을 고점성 점토로 보충하지 않으면 아니되고, 고점성 점도에 포함하는 불순물의 악영향을 회피할 수 없고 품질이 저하를 초래하는 문제가 있었다.As described above, the conventional crushing method of potter's stone has to compensate for the insufficient plasticity with high viscosity clay, and the adverse effect of impurities contained in the high viscosity viscosity cannot be avoided, resulting in a problem of deterioration in quality.

본 발명에 있어서 해결할 과제는 도토의 조제에 있어 부족한 가소성을 고점성 점토를 첨가함이 없이 가소성을 부가하여 성형성이 양호한 도토의 조제를 행하는 수단을 확립함에 있다.The problem to be solved in the present invention is to establish a means for preparing clay having good moldability by adding plasticity without adding high viscosity clay to plasticity insufficient in preparing clay.

본 발명의 도토 조제법은 건식볼밀, 스탬퍼 등 도석에 직접 타격을 주어서 분쇄하는 조제법에 있어서, 도토의 성분상 필요로 하는 점토분을 고점성 점토는 아니고 점성은 극히 낮지만 불순물이 적은 점토(한국 카올린) 등을 미리 배합하여 도석과 동시에 분쇄하는 것을 특징으로 한다.The clay preparation method of the present invention is a clay ball mill, a stamper, such as a direct blow to the crushing method of crushing the clay, the clay component required in the clay component is not highly viscous clay, but viscous very low clay (Korea Kaolin ) Is mixed in advance and pulverized simultaneously with the coating.

여기에서 전기 점토로서 카올린광물, 세리사이트 등을 이용할 수 있다.Kaolin mineral, sericite, etc. can be used here as electric clay.

본 발명의 점토 조제법에 있어서는 주로 건식볼밀을 사용하고 도석과 카올린을 배합하여 동시에 분쇄한다. 건식볼밀에 의한 분쇄는 습식볼밀에 의한 분쇄와 달리 분쇄되는 도석의 대부분이 볼과 볼의 충돌에 의한 타격으로 분쇄된다. 이때, 볼과 볼 사이에서 마찰된 도석 및 카올린은 극히 미세한 분말을 생성할 뿐만 아니라 충격에 의한 에너지를 흡수하고, 점토의 결정조성이 변화된다. 점토의 결정 표면은 양 이온으로 대전하여 수막을 생성하고 용이하게 한다.In the clay preparation method of this invention, a dry ball mill is mainly used, it mixes pottery and kaolin, and is grind | pulverized simultaneously. Grinding by a dry ball mill, unlike grinding by a wet ball mill, most of the crushed stone is crushed by the impact of the ball collided with the ball. At this time, the pottery and kaolin rubbed between the ball not only produces extremely fine powder, but also absorbs energy due to impact, and changes the crystal composition of the clay. The crystal surface of the clay is charged with positive ions to create and facilitate the water film.

점토광물은 그 구조상 결정수를 가지고 있어, 흡습하기 쉬운 성질을 가지고 있어 자유수를 0에 가까운 상태로 건조시키는 것은 실용상 곤란하다. 점토는 다른 광물과 같이 고온건조를 하면 결정수를 잃고, 점토본래의 성질을 잃는 일이 있다. 또, 건조가 불충분한 점토를 건식볼밀로 분쇄하면, 밀의 내면에 부착하여 분쇄되지 않는다. 따라서, 점토 단위의 분쇄는 습식볼밀에 의하지 않으면 아니된다.Clay minerals have crystal water in their structure and have properties that are easily hygroscopic, and it is difficult to practically dry the free water in a state close to zero. Clay, like other minerals, loses its crystallization water and loses its original properties when dried at high temperatures. In addition, when the insufficient dry clay is pulverized with a dry ball mill, it is adhered to the inner surface of the mill and is not pulverized. Therefore, the grinding of clay units must be done by a wet ball mill.

습식볼밀에 의한 부쇄는 물(200~300%)과 함께 행하고, 그 분쇄형식은 볼과 볼에 의한 타격은 아니고, 볼과 볼의 마찰운동에 의한 마찰에 의하여 분쇄된다. 이 형식으로는 밀내의 슬러리 농도가 높으면 높을수록 볼의 운동은 저항을 받아 운동 에너지는 감소하고, 미립자는 발생하기 어렵다. 충돌에너지는 물에 흡수되어서 열로 변화되어 방출되므로 점토결정에 미치는 영향은 건식볼밀에 비해 훨씬 적은 것으로 된다.The grinding by the wet ball mill is performed with water (200-300%), and the grinding type is not crushed by the ball and the ball, but is crushed by the friction caused by the frictional motion of the ball and the ball. In this form, the higher the slurry concentration in the mill, the more the movement of the ball is resisted, the kinetic energy is reduced, and the finer particles are less likely to occur. The impact energy is absorbed by the water, converted into heat, and released, so the impact on clay crystals is much less than in dry ball mills.

본 발명에 있어서는 점토입자가 거칠고 점성이 낮은 점토 등을 점토 단위로는 분쇄 불가능한 정도의 수분량으로도 분쇄가능한 상태로 하고, 미립자를 발생시키는 것과 점토입자에 볼의 충돌에너지를 주어 점토입자의 수막생성 능력을 높힘으로써 가소성을 개선하는 것이다.In the present invention, clay particles having a low coarse clay and low viscosity are made to be pulverizable even with a moisture content that cannot be crushed in clay units, generating fine particles and imparting collision energy of balls to the clay particles to form water film of clay particles. Increasing the ability to improve plasticity.

실시예Example

보패도석(寶貝陶石 : 한국 경상남도산, 점토광물이 적고 단일체로의 성형은 불가능)을 6~3밀리로 분쇄하고, 충분 건조 시킨후 한국카올린 PA를 수분율 10% 이하로 건조시킨 것을 9대1의 비율로 조합하고, 500킬로 볼밀에서 12시간 분쇄하였다. 이 분쇄물을 물에 녹여서 200메쉬(mesh)의 채로 여과하여 필터프레스로 탈수하여 도토로 하였다. 이 도토는 가장 가소성을 얻기 쉬운 스탬퍼 분쇄에 의한 도토의 입도분포와 같이 입도분포를 나타내고, 가소성이 높고 스탬퍼분쇄에 의한 도토보다도 양호한 성형성을 나타냈다.Grinding bopado stone (寶貝 陶 石: Gyeongsangnam-do, Korea, small amount of clay minerals, impossible to form into a single body) to 6 ~ 3 millimeters, and after sufficient drying, dried Korean kaolin PA to 10% or less moisture content. It was combined in the ratio of and grind | pulverized for 12 hours in the 500 kilo ball mill. This pulverized product was dissolved in water, filtered with 200 mesh, and dewatered with a filter press to obtain clay. This clay showed a particle size distribution similar to the particle size distribution of the clay by stamper grinding, which is most likely to obtain plasticity, and had high plasticity and better moldability than clay by stamper grinding.

전기 보패도석을 습식볼밀로 12시간 분쇄하고, 같은 한국카올린을 습식볼밀로 분쇄한 것을 9대 1로 배합하여 도토로 하여, 성형용 시도하였으나 불가능하였다.The electroplated stone was crushed with a wet ball mill for 12 hours, and the same Korean kaolin was crushed with a wet ball mill in a 9 to 1 blend to make clay, but it was impossible for molding.

본 발명에 의한 도토조제로는 건식볼밀로는 분쇄 불가능한 카올린 광물을 건식볼밀에 의한 분쇄를 가능케함으로써 이하의 효과를 이룬다.As a doto-coating agent according to the present invention, the dry ball mill makes it possible to grind the kaolin mineral which cannot be ground by the dry ball mill, thereby achieving the following effects.

1. 도석과 점토를 건조하여 배합하고, 분쇄하기 때문에 배합의 점도가 올라가서 품질이 안정된다.1. The potter's stone and clay are dried, blended and ground, so that the viscosity of the mixture rises and the quality is stable.

2. 점토를 극한까지 건조할 필요가 없다.2. It is not necessary to dry the clay to the extreme.

3. 고점성 점토를 부가할 필요가 없고, 백색도가 높고 고품질의 도토를 저렴한 비용으로 생산할 수 있다.3. No need to add high viscosity clay, high whiteness and high quality clay at low cost.

4. 종래, 사용하는 것이 제한되어 있던 저품질 도석, 가소성이 부족한 카올린을 염가로 풍부한 자원을 활용할 수 있다.4. Abundant resources can be utilized at low cost of pottery, which has been limited to use conventionally, and kaolin, which lacks plasticity.

5. 분진, 소음의 발생이 적고 작업환경이 안전하다.5. Low dust and noise and safe working environment.

6. 규모의 대소를 불문하여 적용할 수 있고 장치의 자동화가 용이하다.6. It can be applied in any size or small and easy to automate.

Claims (1)

점토광물을 포함하는 도석을 타격 또는 마찰 등 외부에서 에너지를 주어서 분쇄하여, 도토를 조제하는 방법에 있어서, 가소성이 부족한 점토를 도석과 함께 혼합하여 건식볼밀로 충격분쇄하고, 점토결정에 직접 에너지를 줌으로써 가소성을 부여하여 성형성을 개선하는 것을 특징으로 하는 방법.In the method of preparing clay by striking or crushing the clay containing clay minerals from the outside, such as hitting or friction, mixing clay with insufficient plasticity together with the stone to impact grinding with a dry ball mill, and directly applying energy to the clay crystal. To improve plasticity by imparting plasticity.
KR1019930012490A 1993-07-03 1993-07-03 Process for the preparation of clay-ware KR960011315B1 (en)

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Application Number Priority Date Filing Date Title
KR1019930012490A KR960011315B1 (en) 1993-07-03 1993-07-03 Process for the preparation of clay-ware

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KR950003209A KR950003209A (en) 1995-02-16
KR960011315B1 true KR960011315B1 (en) 1996-08-22

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