KR0153852B1 - Process for the preparation of porous ceramic - Google Patents
Process for the preparation of porous ceramicInfo
- Publication number
- KR0153852B1 KR0153852B1 KR1019950036524A KR19950036524A KR0153852B1 KR 0153852 B1 KR0153852 B1 KR 0153852B1 KR 1019950036524 A KR1019950036524 A KR 1019950036524A KR 19950036524 A KR19950036524 A KR 19950036524A KR 0153852 B1 KR0153852 B1 KR 0153852B1
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- porous ceramics
- microorganisms
- inexpensive
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- rivers
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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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
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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
- 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
- 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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/0038—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by superficial sintering or bonding of particulate matter
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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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Biological Treatment Of Waste Water (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
Abstract
근년에 생활환경의 변화에 의해서, 다량의 폐기물, 배수의 발생은 물이 순환하는 환경에 심각한 영향을 주고 있다. 또, 하천개수에 의해서 콘크리트로 굳힌 개천, 수로는 예전과 같이 갖가지의 미생물이 사는 곳은 되지 못하고, 하천의 정화능력은 저하할 뿐이다. 그리하여, 개천, 수로에 미생물의 주거로 되는 다공질세라믹을 설치하고, 미생물에 의한 정화능력을 비약적으로 높이는 시도가 이루어지고 있다. 그리하여, 구해지는 것은 대량으로 사용하는 것이 전제이므로, 저렴하지 않으면 아니되고, 엄격한 조건에서의 사용에 견디지 않으면 아니된다. 본 발명은 고기능, 고성능, 또한 염가의 다공질세라믹을 대량으로 생산하는 수단을 개발함에 있는 것으로서, 본 발명의 구성은 안정된 기공율, 높은 파괴강도, 용출이 거의 없는 염가의 다공직 세라믹을 얻기 위한 재료구성으로 되어 있고, 천연으로, 또한, 무수정으로 상기 재료구성에 합치하는 원료를 구한 결과, 한국카올린 WC, WD가 최적인 것을 발견하였다.In recent years, by the change of living environment, the generation of a large amount of waste, drainage has a serious influence on the environment in which water circulates. In addition, the streams and waterways hardened with concrete by the number of rivers do not become places where various microorganisms live, and the purification ability of the rivers is reduced only. Thus, attempts have been made to install porous ceramics, which are homes of microorganisms in streams and waterways, to dramatically increase the purification ability by microorganisms. Therefore, since it is premised that it is used in large quantities, it must be inexpensive and must endure use in strict conditions. The present invention is to develop a means for producing a high-performance, high-performance, and inexpensive porous ceramics in large quantities. The composition of the present invention is a material composition for obtaining a low-cost porous ceramics with stable porosity, high breakdown strength, and little dissolution. As a result of obtaining a raw material conforming to the above-described material constitution naturally and uncensored, it was found that Korean kaolin WC and WD were optimal.
Description
본 발명은 각종필터, 바이오반응기로서 환경의 미화, 수질개선에 기여하는 다공질세라믹의 제법에 관한다.The present invention relates to the production of porous ceramics that contribute to the beautification of the environment and the improvement of water quality as various filters and bioreactors.
다공질세라믹을 특징으로 하는 연속기공을 이용하여, 각종필터, 바이오리엑터로서, 환경의 미화, 수질개선 등에 기여하고 있다.By using continuous pores characterized by porous ceramics, it is contributing to a variety of filters and bioreactors, improving the environment and improving water quality.
그 제법은 크게 구분하여 알루미나 등 고순도 원료를 엄밀히 입도별로 배합하고, 가소제를 가하여 성형하여 소성하는 방법, 점토를 주체로 하는, 충분히 가소성이 있는 원료를 배토로 하여 연속기공을 만들기 위한 감용량제(減容量制), 예를들면, 톱밥 등을 가하여 성형하여, 소성하는 방법이 채용되고 있다.The manufacturing method is largely divided into high-purity raw materials such as alumina by particle size, a method of forming and firing by adding a plasticizer, and a reducing agent for making continuous pores using clay which is mainly plastic, which is mainly plastic. A method of forming and firing by adding sawdust or the like has been adopted.
전자는 고기능, 고성능인 제품을 얻게되나 제조비용이 높고, 고가인 난점이 있다. 후자는 원료비용은 염가이고, 비교적 제조하기 쉬운 특징을 가지나, 제품의 강도를 얻는 것이 어렵다.The former obtains high-performance, high-performance products, but has high manufacturing costs and expensive difficulties. The latter has the characteristics that the raw material cost is inexpensive and relatively easy to manufacture, but it is difficult to obtain the strength of the product.
상기와 같이, 다공질세라믹을 제조하는 경우, 크게 구분하여 2개의 방법이 채용되고 있으나, 고순도원료를 사용하는 방법으로는, 비용이 많이 소요되고, 대량으로 함으로써 장애가 된다. 저가격의 점토를 주원료로 하는 방법으로는, 비교적 염가의 제품을 제공할 수 있으나, 연속기공을 얻기 위해서, 기공 생성제를 배합함으로써, 제품의 강도를 얻은 것이 어렵다.As described above, in the case of manufacturing the porous ceramics, two methods are widely used. However, the method of using a high purity raw material requires a lot of costs and becomes a hindrance by making a large amount. As a method of using a low cost clay as a main raw material, a relatively inexpensive product can be provided. However, in order to obtain continuous pores, it is difficult to obtain the strength of the product by blending a pore generating agent.
본 발명에 있어서, 해결하여 할 과제는 고기능, 고성능인 제품을 염가로, 대량으로 생산하는 제조방법을 확립함에 있다.In the present invention, the problem to be solved is to establish a production method for producing a high-performance, high-performance product at low cost and in large quantities.
본 발명에서는, 배토의 성분을 180메쉬이상, 60메쉬이하의 입상회장식(粒牀灰長石)을, 50%이상, 80%이하, 할로이사이트(halloysite) 또는 카올리나이트(kaolinite), 또는 셀리사이트(salesite)를, 20%이상, 50%이하로서 하고, 1000℃이상, 1300℃이하에서 소성한다.In the present invention, the granules of clay is 180 mesh or more, 60 mesh or less, 50% or more, 80% or less, halloysite or kaolinite, or celite ( salesite) is 20% or more and 50% or less and fired at 1000 ° C or more and 1300 ° C or less.
이와 같은 성분비율을 가지는 천연원료로서, 한국카올린WC, 한국카올린WD가 있다. 한국카올린 WC, WD는 카올린이라고 공칭(公稱)하는 것은 부적당하고, 불순물로서, 입상회장석을 약 70% 포함하고 있다. 이 입상회장석이 입도 분포는 대략 180메쉬이상, 60메쉬이하로 균등하게 분포하고 있고, 다공질세라믹의 골재로서 사정이 좋다.As a natural raw material having such a component ratio, there are Korea Kaolin WC and Korea Kaolin WD. Kaolin Korea WC and WD are not suitable for nominal kaolin, and contain about 70% of granite feldspar as impurities. The granular feldspar is distributed evenly at a particle size distribution of approximately 180 mesh or more and 60 mesh or less, and is good as an aggregate of porous ceramics.
상기와 같은 성분비율을 가지는 원료를 잘 혼련하여 배토하면, 장석의 표면은, 초미립자인 점토광물에 덮힌 상태로 된다. 이를 성형하여 소성하면, 미립(微粒)의 장석은 용융하여, 점토광물의 피막을 찢고, 다른 입자와 결합한다. 비교적으로 조립(祖粒)의 장석은, 동글게 소결하여 미립자로 연결된 구조로 되어, 연결기공을 생성한다.When the raw materials having the above component ratios are kneaded well and thrown away, the surface of the feldspar is covered with clay minerals that are ultrafine particles. When this is molded and calcined, fine feldspar melts, tearing off the coating of clay minerals and bonding with other particles. In comparison, granulated feldspar has a structure in which it is sintered in a circle and connected with fine particles, thereby generating connecting pores.
본 발명으로써 제조하는 다공질세라믹은, 기공직경의 조정이 비교적 용이하고 전성(全性)이 높다. 다공질세라믹은, 파괴강도를 올리는 것이 어려우나, 기본적으로 구형의 유리를 연결한 구조를 가지고, 본 발명으로써 다공질세라믹은, 종래의 제법에 비하여 강도를 얻기 쉽다. 한국카올린WC, WD는 천연으로 산출하고, 매장량도 많고, 또한 가격도 염가이다. 세라믹필터 또는 바이오반응기로서, 대량 사용할때의 이익은 산정할 수 없다.The porous ceramic produced by the present invention has a relatively easy adjustment of pore diameter and high malleability. Porous ceramics are difficult to increase the breaking strength, but basically have a structure in which spherical glass is connected, and the porous ceramics are easier to obtain strength than the conventional manufacturing method. Kaolin WC and WD in Korea are produced naturally, have a lot of reserves and are cheap. As a ceramic filter or bioreactor, the benefits of large use cannot be estimated.
한국 경상남도 산청군 산청산의 카올린WC를 사용하여 원광(原洸)을 물에 용해하여, 60메쉬로 채질하여 나눈다. 60메쉬이상의 조입자(租粒子)를 제거하여 농축하고, 바이오처리(점토에 유기영양원을 첨가하여 미생물을 증식시켜 미생물의 생활반응에 의하여 점토결정표면에 탄화수수화합물을 수식시킴으로써 점토결정표면의 수막을 형성한 후 탈철을 행하는 처리)를 행하여 가소성을 부가한 후, 탈수하여 배토를 이룬다. 진공토련기로 토련(土練)한 배토를 성형하고, 건조하여 1250℃에서 소성하였다. 이와같이하여 제조한 다공질세라믹은 단위 용적당 70%의 기공율을 가지고, 수도압(水道壓) 2kg에 있어서, 1cm2당 1ℓ/분의 물통과 율을 가진다.Kaolin WC from Sancheong-san, Sancheong-gun, Gyeongsangnam-do, Korea is used to dissolve ore in water and fill it with 60 mesh. Removes and concentrates more than 60 mesh of coarse particles, and biotreatment After the formation thereof, degassing is carried out to add plasticity, followed by dehydration to form clay. The clay was drilled with a vacuum drill, dried and calcined at 1250 ° C. The porous ceramic thus prepared has a porosity of 70% per unit volume, and a water flow rate of 1 l / min per 1 cm 2 at a water pressure of 2 kg.
이 다공질세라믹은, 순수한 물증에, 24시간 두어도, 1PPM의 칼슘의 용출이 있을 뿐으로서, 달리 용출하는 것은 없다.The porous ceramics are only eluted with 1 PPM of calcium even if placed in pure water for 24 hours, and do not elute otherwise.
본 발명으로써 제조하는 다공질세라믹은, 이하의 효과를 이룬다.The porous ceramic produced by the present invention has the following effects.
1. 천연으로 산출하고, 또는 염가인 한국카올린WC, WD를 100%사용하므로, 극히 비용이 저렴한 다공질세라믹의 생산이 가능하다. 이는 바이오반응기로서, 하천 등의 수질개선에, 대량으로 사용하는 경우, 빼놓을 수 없는 요건이다.1. It is possible to produce porous ceramics that are extremely inexpensive because they are made of natural or inexpensive 100% of Korean kaolin WC and WD. This is a bioreactor, which is indispensable when used in large quantities for water quality improvement of rivers and the like.
2. 회장석이 소결한, 구형의 유리를 골격으로 하는 구조의 이 다공질세라믹은 파괴강도가 강하고, 또한 수중에서 거의 용출하지 않는다.2. This porous ceramic having a structure of spherical glass sintered by sintered stone has strong fracture strength and hardly elutes in water.
3. 온도내성이 높고, 넓은 온도대로 안정하다.3. High temperature resistance and stable at wide temperature.
4. 소성조건을 바꿈으로써, 강도, 기공율을 넓은 범위로 바꿀 수 있고, 필요조건에 맞는 제품의 제조가 가능하다.4. By changing the firing conditions, it is possible to change the strength and porosity in a wide range, and to manufacture products that meet the requirements.
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950036524A KR0153852B1 (en) | 1995-10-21 | 1995-10-21 | Process for the preparation of porous ceramic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950036524A KR0153852B1 (en) | 1995-10-21 | 1995-10-21 | Process for the preparation of porous ceramic |
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| Publication Number | Publication Date |
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| KR970021010A KR970021010A (en) | 1997-05-28 |
| KR0153852B1 true KR0153852B1 (en) | 1998-11-16 |
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| KR1019950036524A KR0153852B1 (en) | 1995-10-21 | 1995-10-21 | Process for the preparation of porous ceramic |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100729677B1 (en) * | 2005-11-07 | 2007-06-18 | 엔테크 가부시끼가이샤 | Porous ceramic and method for manuracturing the same |
| KR20210050926A (en) * | 2019-10-29 | 2021-05-10 | 경상국립대학교산학협력단 | Fungal pellets against indiscriminate hypha growth through surface treatment using halloysite and manufacturing method thereof |
| KR20230000782A (en) * | 2021-06-25 | 2023-01-03 | 창원대학교 산학협력단 | Synthesis of low thermal expansion cordierite ceramics using kaolin group minerals and cordierite ceramics with low thermal expansion thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010008765A (en) * | 1999-07-03 | 2001-02-05 | 김원섭 | Manufacturing method of kaolinite |
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1995
- 1995-10-21 KR KR1019950036524A patent/KR0153852B1/en not_active IP Right Cessation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100729677B1 (en) * | 2005-11-07 | 2007-06-18 | 엔테크 가부시끼가이샤 | Porous ceramic and method for manuracturing the same |
| KR20210050926A (en) * | 2019-10-29 | 2021-05-10 | 경상국립대학교산학협력단 | Fungal pellets against indiscriminate hypha growth through surface treatment using halloysite and manufacturing method thereof |
| KR20230000782A (en) * | 2021-06-25 | 2023-01-03 | 창원대학교 산학협력단 | Synthesis of low thermal expansion cordierite ceramics using kaolin group minerals and cordierite ceramics with low thermal expansion thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| KR970021010A (en) | 1997-05-28 |
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