KR960011332B1 - Process for the preparation of a brick - Google Patents
Process for the preparation of a brick Download PDFInfo
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- KR960011332B1 KR960011332B1 KR1019930019981A KR930019981A KR960011332B1 KR 960011332 B1 KR960011332 B1 KR 960011332B1 KR 1019930019981 A KR1019930019981 A KR 1019930019981A KR 930019981 A KR930019981 A KR 930019981A KR 960011332 B1 KR960011332 B1 KR 960011332B1
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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
- C04B18/16—Waste materials; Refuse from building or ceramic industry
- C04B18/165—Ceramic waste
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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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
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- 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
- C04B33/00—Clay-wares
- C04B33/32—Burning methods
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- 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
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
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- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
- C04B38/063—Preparing or treating the raw materials individually or as batches
- C04B38/0635—Compounding ingredients
- C04B38/0645—Burnable, meltable, sublimable materials
- C04B38/067—Macromolecular compounds
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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
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6567—Treatment time
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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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/14—Colouring matters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Environmental & Geological Engineering (AREA)
- Dispersion Chemistry (AREA)
- Civil Engineering (AREA)
- Inorganic Chemistry (AREA)
- Road Paving Structures (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
용어의 정의Definition of Terms
폐도자기등의 분쇄골재라 함은 폐기된 적벽돌, 폐타일 및 폐도자기등을 0.5밀리미터 내지 5밀리미터 크기로 분쇄한 입자를 말한다. 미립자 분쇄물이란 폐도자기등의 분쇄골재를 분쇄제조할때 발생하는 0.5밀리미터 이하의 입자를 말한다.The pulverized aggregate such as waste pottery refers to particles obtained by crushing discarded red brick, waste tile, and waste pottery into 0.5 to 5 millimeters in size. The fine particle pulverized product refers to particles of 0.5 millimeter or less that are produced when pulverizing aggregated aggregates such as waste ceramics.
현재 사용되고 있는 벽돌류는 크게 세멘트 벽돌과 적벽돌의 두 종류로 나눌 수 있습니다. 그리고 적벽돌은 점토를 물과 섞어서 진공토련(眞空土練)하여 일정한 규격의 장방사각형(長方四角形)의 노즐구멍으로 압출(壓出)시켜서, 일정규격의 길이로 절단하여 건조 소성(燒成)하여 제조되고 있습니다.Currently used bricks can be divided into two types: cement brick and red brick. The red brick is vacuum-mixed by mixing clay with water, extruded into a rectangular nozzle hole of a certain standard, cut into a predetermined standard length, and dried and fired. ) Is manufactured.
이와 같이 제조되는 적벽돌은 그 원료로서 대량으로 용이하게 구입할 수 있고, 비교적으로 균질이고 가소성이 좋은 분지 점토를 사용하고 있습니다. 그러나 분지점토를 사용하였을 경우에는 일반적으로 적색이외의 다른 색상으로 할 수가 없으며, 비교적 고온(1100∼1250℃)에서 소성해야 하므로 열에너지 소모가 크고 또한 10% 내외의 불균일한 수축이 수반됩니다.The red brick thus manufactured can be easily purchased in large quantities as a raw material, and it uses relatively homogeneous and plastic branched clay. However, when branched clay is used, it cannot generally be colored other than red, and it must be fired at a relatively high temperature (1100 ~ 1250 ℃), resulting in high heat energy consumption and uneven shrinkage of around 10%.
이와 같이 제조되는 적벽돌의 강도는 양호하나 투수성이 없으며 소성할때의 불규칙적인 수축으로 그 표면이 매끄러운 평면(平面)이 되지 못하며 미려한 벽면 또는 포장면을 얻으려면은 때로는 벽돌시공 후에 벽돌의 표면의 보완작업을 해야 할 경우가 많이 있습니다.Although the strength of the red bricks produced in this way is good, it is not permeable and irregular shrinkage during sintering prevents the surface from becoming a smooth flat surface. There are many occasions when you need to supplement your work.
본 발명은 분지점토를 사용하여 제조되는 일반의 적벽돌의 위와 같은 단점을 해결함과 동시에 강도도 강하며 또한 투수성이 양호하면서도 보수성(保水性)이 거의 없거나 아주 작은 벽돌로서 벽돌표면이 미려하여 외장용 및 투수성바닥 포장용으로 적절한 투수성벽돌의 제조에 관한 것이다.The present invention solves the above disadvantages of the general red brick manufactured using the branched clay and at the same time has a strong strength, good water permeability and little or no water retention, and the brick surface is beautiful. The present invention relates to the manufacture of permeable bricks suitable for exterior and permeable floor pavement.
본 발명의 투수성벽돌은 폐기된 적벽돌, 폐타일 및 폐도자기등을 0.5밀리미터 내지 5밀리미터의 크기로 분쇄한 입자를 골재로 하고, 이를 점토를 첨가하지 않고, 그 대신 미립자 분쇄물을 일정량 첨가하여 점결제 역할을 하게 하여 벽돌 본체를 구성하고, 이 벽돌 본체의 한쪽면에 세라믹 구체층(ceramic 球體層)을 형성한 것이다.The water-permeable brick of the present invention is an aggregate of pulverized red bricks, waste tiles, waste ceramics, etc. in the size of 0.5 to 5 millimeters as aggregate, without adding clay, and instead of adding a certain amount of particulate pulverized powder. By forming a brick body by acting as a binder, a ceramic concrete layer is formed on one side of the brick body.
바닥 보도용과 같은 벽돌은 크기가 일정하면서 강도가 크며, 동시에 투수성이 양호해야 하는데 폐도자기등의 분쇄골재의 점결제로서 점토를 이용하는 경우에는 강도도 양호하고 투수성도 좋은 벽돌을 얻을 수가 없다. 다시 말하면 점토 첨가량이 너무 적으면 강도가 약해지고 너무 많으면 투수성이 물량해진다. 그러나 미립자 분쇄물을 점결재로 사용하면 강도와 투수성이 공히 양호한 투수벽돌을 얻을 수 있고, 또한 미립자 분쇄물의 적정혼합양의 폭도 넓어서 작업관리가 용이한 점에 착안하여 본 발명을 하게 된 것이다.Bricks, such as floor walkways, have a constant size and high strength, and at the same time have good permeability. When clay is used as a caking agent for crushed aggregates such as waste ceramics, bricks having good strength and good permeability cannot be obtained. In other words, too little clay adds strength and too much clay results in water permeability. However, when the fine particle pulverized material is used as a caking additive, a permeable brick having both good strength and permeability can be obtained, and the optimum mixing amount of the fine particle pulverized is also wide.
현재 우리나라에는 2000여개의 벽돌, 타일, 도자기등의 제조업체가 있으며 이들 업체에서는 방대한 물량의 불량품이 발생하고 있고 이들 불량품의 상당부분은 이용되지 못하고 땅속에 매몰하거나 외딴곳에 버려짐으로서 자원의 낭비와 토양오염의 원인이 되고 있습니다. 그러나 본 발명에서는 이와 같은 폐기자원을 재활용 함으로서 토양오염의 방지와 동시에 원가의 절감을 기할 수 있습니다.Currently there are more than 2000 manufacturers of bricks, tiles, ceramics, etc. in these companies, a large amount of defective products are generated, and a large part of these defective products are not used and are buried in the ground or thrown away in secluded places. It causes. However, in the present invention, such waste resources can be recycled to reduce soil pollution and reduce costs.
본 발명에서 폐기된 적벽돌, 폐타일 및 폐도자기들의 파쇄물을 사용하게 된 것은 일단 소성된 고체물은 강도가 우수하며, 재혼합 소성시의 수축이 적거나 없으며, 이들 파쇄물의 혼합소성물은 공극이 많아서 투수성이 우수한 반면, 물의 흡착반발성(Water repellent, 吸着反撥性)이 있음에 착안한 것입니다. 더욱이 적벽돌, 타일 및 도자기들은 일차적으로 원료정제 또는 원료배합공정을 거쳐서 제조된 것들이므로 분지점토의 사용시처럼 원료의 선별 또는 경우에 따라서는 사분배합(砂分配合)등의 공정을 거칠 필요도 없다는 장점이 있습니다.In the present invention, the red bricks, waste tiles, and waste ceramics discarded are used, so that once the solids are calcined, the strength is high, and there is little or no shrinkage during the remixed firing. This is due to the high water permeability and water repellent. Furthermore, red bricks, tiles, and ceramics are manufactured primarily through raw material refining or raw material mixing, so there is no need to go through the process of sorting raw material or in some cases, such as when using branched clay. There is an advantage.
또한 미립자분쇄물은 그 가소성, 소결성등에 있어 점토보다 우수하며, 이들 속에 함유된 유약등은 낮은 온도에서도 유동성을 가져 소성중에 변형을 방지하고, 소성후에는 제조된 벽돌의 강도를 보강하는 역할도 합니다.In addition, the fine powder is superior to clay in its plasticity and sinterability, and the glaze contained in them has fluidity even at low temperature to prevent deformation during firing and to reinforce the strength of the manufactured brick after firing. .
본 발명의 투수성벽돌의 제조방법을 공정도에 따라 상세히 설명하면 다음과 같습니다.Referring to the manufacturing method of the water-permeable brick of the present invention in detail according to the process drawing is as follows.
공정도Process chart
골재 파쇄 : 폐기된 적벽돌 폐타일 및 폐도자기등 원료를 조크러샤(JAW CRUSHER)나 임팩트 크러샤(IMPACT CRUSHER)로 분쇄한 다음 롤크러샤(ROLL CRUSHER)를 거쳐 골재를 파쇄한다. 이와 같이 두번 분쇄하는 것은 미립자의 함량을 증가시키기 위한 것이다.Aggregate crushing: Raw materials such as used red brick waste tiles and waste pottery are crushed with JAW CRUSHER or IMPACT CRUSHER, and then aggregate is crushed through ROLL CRUSHER. This pulverization twice is for increasing the content of the fine particles.
선별 : 분쇄된 골재는 진동망으로 선별하여 0.5㎜ 내지 5㎜의 것은 골재로서 수집하고 0.5㎜ 이하의 미립자 분쇄물은 점토 대응으로 사용할 수 있도록 별도로 수집한다.Sorting: The pulverized aggregate is sorted with a vibrating net, and 0.5 mm to 5 mm is collected as aggregate, and finely divided particles of 0.5 mm or less are collected separately so that they can be used as clay.
골재 : 0.5㎜ 내지 5㎜로 분쇄된 폐기된 적벽돌, 폐도자기 등을 선별 저장한 것이다.Aggregate: Selected storage of discarded red bricks, waste ceramics, etc., which are ground to 0.5 mm to 5 mm.
혼합Ⅰ : 골재에 수용액 상태의 유기 바인더(Binder)를 무게비로 8∼15% 정도 투입후 교반 혼합한다. 이와 같은 혼합은 다음 공정(혼합Ⅱ)에서 미립자 분쇄물이 골고루 골재 표면에 부착되도록 하기 위한 것으로서 유기 바인더로는 1% 내지 3%의 CMC 수용액이 가장 그 강도가 좋았다.Mixing I: After mixing 8-15% by weight of the organic binder (Binder) in the form of an aqueous solution to the aggregate, and stirred and mixed. This mixing is to ensure that the finely divided particles evenly adhere to the aggregate surface in the next step (mixing II), and the organic binder had the best strength of 1% to 3% CMC aqueous solution.
혼합Ⅱ : 유기바인더 수용액과 혼합된 골재에 대해 중량비로 대략 8∼20%의 미립자 분쇄물을 투입한 후 날개가 달린 믹서로 5분 정도 혼합한다.Mixing II: Add about 8 to 20% of the fine particle pulverization in the weight ratio to the aggregate mixed with the organic binder aqueous solution, and mix for 5 minutes with a bladed mixer.
제1차 성형 : 골재와 미립자 분쇄물이 혼합교반된 혼합물을 형틀에 쏟아 넣고 형틀을 진동하면서 1.5㎏/㎠ 이상의 압력을 가하여 1차 성형을 한다. 단 이때의 성형물의 두께는 벽돌의 다음공정(2차가압성형)에서 추가될 세라믹 구체층을 위하여 정격 규격보다 4밀리미터 내지 10밀리미터 정도 얇게 하여야 한다.First Molding: A mixture of aggregate and fine particle pulverized mixture is poured into a mold, and the mold is first shaken by applying a pressure of 1.5㎏ / ㎠ or more while vibrating the mold. In this case, however, the thickness of the molding should be 4mm to 10mm thinner than the rated specification for the ceramic concrete layer to be added in the next step of the brick (secondary pressing).
세라믹 구체 혼합물 : 0.5밀리미터 내지 3밀리미터의 입경(粒徑)을 가지고 세라믹스 구체(球體)을 세라믹스 구체에 대해 중량비로 3% 내지 5%의 유기바인더 수용액을 첨가하고, 같은 중량의 유약 및 물유리(Water Glass) 수용액을 첨가하여 완전히 혼합한다.Ceramic sphere mixture: A ceramic sphere having a particle diameter of 0.5 to 3 millimeters is added to the ceramic sphere in a weight ratio of 3% to 5% of an organic binder solution, and the same weight of glaze and water glass (Water Glass) Add an aqueous solution and mix thoroughly.
이때 사용되는 유기바인더 수용액은 PVA 또는 CMC 1% 내지 3%의 수용액이며, 유약 및 물유리 수용액은 무수물유리로 환산하여 2.5% 내지 3.5%의 수용액이다. 그리고 이때 사용되는 세라믹 구체 혼합물은 입경이 작은 구체의 비율이 높을 수록 강도가 좋았다.The organic binder aqueous solution used is an aqueous solution of 1% to 3% of PVA or CMC, and the aqueous solution of glaze and water glass is an aqueous solution of 2.5% to 3.5% in terms of anhydrous glass. In this case, the ceramic sphere mixture used had a higher strength with a higher ratio of spheres having a smaller particle diameter.
제2차 가압성형 : 제1차 가압성형물은 그 성형틀에 놓은 채 그 위에 4밀리미터 내지 10밀리미터 정도 두께의 세라믹스 구체층이 되도록 하여 세라믹스 구체 혼합물을 쏟아 넣고 진동하면서 1.5㎏/㎠ 이상의 압력을 가하여 성형하여 최종성형물의 두께가 벽돌의 정규 규격과 일치되도록 한다. 단 상하의 접착력을 증대시키기 위하여 1차 성형시는 압력을 가하지 않고 진동만으로 하부원료를 다진 후 2차 가압성형에서 진동가압하는 방법으로 제조할 수도 있다.Second press molding: The first press molding is placed on the mold to make ceramic sphere layer of 4 to 10 millimeters thick on it, and the mixture of ceramic spheres is poured and vibrated under pressure of 1.5㎏ / ㎠ Molding ensures that the thickness of the final molding conforms to the normal specification of the brick. However, in order to increase the adhesive strength of the upper and lower, it may be prepared by the method of vibration pressing in the secondary press molding after pulverizing the lower raw material by vibration only without applying pressure during the primary molding.
건조 : 투수성 벽돌은 공극이 많은 구조로서 건조가 용이하며 일반적으로 50℃ 내지 150℃의 온도에서 풍건(風乾)하는 것이 효과적이다.Drying: The permeable brick has a large pore structure and is easy to dry, and it is generally effective to air dry at a temperature of 50 ° C to 150 ° C.
소성 : 이와 같이 완전히 건조된 것을 1000℃ 내지 1100℃에서 2시간 내지 2시간반 소성함으로서 본 발명의 투수성 세라믹 벽돌이 제조된다. 그러나 투수성 벽돌의 보다 높은 강도가 요구될 경우에는 1100℃ 내지 1250℃에서 같은 시간에 걸쳐 소성할 수 있다.Firing: The water-permeable ceramic brick of the present invention is produced by baking the completely dried in this manner at 1000 ° C to 1100 ° C for 2 hours to 2 hours. However, if higher strength of the permeable brick is required, it can be fired over the same time at 1100 ° C to 1250 ° C.
본 발명의 제조 방법으로 제조된 세라믹 층이 형성된 투수성 벽돌을, 동일 조건으로 일반 점토(분지 또는 강변점토)를 점결제로 하여 제조한 벽돌의 비교시험한 바 아래와 같은 강도의 차이가 있음을 확인하였다.Comparative tests of bricks prepared with ceramic layers formed with ceramic layers prepared by the method of the present invention using coarse clay (branch or riverside clay) under the same conditions showed that there was a difference in strength as follows. It was.
본 발명의 방법으로 제조된 투수 벽돌은 점토를 이용하는 방법에 비하여 점토역할을 하는 미립자 분쇄물의 양이 8% 내지 20%밖에 되지 않으므로 그만큼 공극을 살릴 수가 있으므로 투수성은 배가 되며, 또한 미립자 분쇄물에 포함된 유약이 점결성을 증대시키며, 내화도가 낮은 원료가 많이 첨가되어 있어서 점토를 사용한 경우보다 낮은 온도 즉 1000℃ 내지 1100℃에서의 소성으로도 위에 보인 것과 같은 우수한 강도의 투수성 벽돌을 얻을 수 있었다. 또한 본 발명의 제법에서 사용하는 미립자 분쇄물에는 적벽돌과는 다른 색상을 주고자 할 때는 소량의 발색제(發色劑) 또는 발색성 화공약품을 첨가하여 색상을 낼 수도 있다.Permeability bricks produced by the method of the present invention is only 8% to 20% of the amount of particulate pulverization acting as clay compared to the method using the clay, so that the permeability can be saved because the permeability is doubled, and also included in the particulate pulverization The glaze increased the cohesiveness, and a lot of raw materials with low fire resistance were added, so that a permeable brick of excellent strength as shown above was obtained even by firing at a temperature lower than that of clay, that is, 1000 to 1100 ° C. In addition, when giving a different color from the red brick to the fine particle pulverization used in the manufacturing method of the present invention, a small amount of a coloring agent or a coloring chemical may be added to give a color.
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KR1019930019981A KR960011332B1 (en) | 1993-09-28 | 1993-09-28 | Process for the preparation of a brick |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103664060A (en) * | 2012-09-06 | 2014-03-26 | 李国辉 | Pre-coated new sand, preparation method thereof and composite permeable brick |
CN106045399A (en) * | 2016-06-02 | 2016-10-26 | 北京建筑材料科学研究总院有限公司 | Water permeable brick and preparation method thereof |
CN109133768A (en) * | 2018-07-12 | 2019-01-04 | 江苏宏发海绵城市科技有限公司 | A kind of odorless stone material of high antibacterial and preparation method thereof |
CN109437667A (en) * | 2018-12-24 | 2019-03-08 | 北京仁创砂业科技有限公司 | A kind of water-permeable brick and preparation method thereof of regeneration baking-free knot ceramsite sand |
-
1993
- 1993-09-28 KR KR1019930019981A patent/KR960011332B1/en not_active IP Right Cessation
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103664060A (en) * | 2012-09-06 | 2014-03-26 | 李国辉 | Pre-coated new sand, preparation method thereof and composite permeable brick |
CN106045399A (en) * | 2016-06-02 | 2016-10-26 | 北京建筑材料科学研究总院有限公司 | Water permeable brick and preparation method thereof |
CN109133768A (en) * | 2018-07-12 | 2019-01-04 | 江苏宏发海绵城市科技有限公司 | A kind of odorless stone material of high antibacterial and preparation method thereof |
CN109437667A (en) * | 2018-12-24 | 2019-03-08 | 北京仁创砂业科技有限公司 | A kind of water-permeable brick and preparation method thereof of regeneration baking-free knot ceramsite sand |
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KR950008421A (en) | 1995-04-17 |
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