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公开(公告)号：KR1020010077071A
公开(公告)日：2001-08-17
申请号：KR1020000004627
申请日：2000-01-31
Applicant: 한국과학기술연구원
IPC: C04B38/06
CPC classification number: C04B35/64 , C02F1/003 , C04B35/16 , C04B35/52 , C04B38/06 , C04B41/88 , C04B2103/67
Abstract: PURPOSE: A preparation method of porous ceramic filter, especially, being applied to a water purifier, having filtering and antibacterial effects at a time is provided which simplifies structure of water purifier and improves antibacterial durability by dispersing Ag into ceramic raw materials. CONSTITUTION: The method comprises the steps of: (i) mixing 70-99.9wt.% of ceramic materials composed of one or more of clay, kaolin, feldspar and pottery stone with 0.1-30wt.% of silver salt such as silver acetate, silver carbonate and silver oxalate; (ii) mixing 30-95wt.% of the ceramic materials of step (i) with 5-70wt.% of powdered flammable materials such as carbon compound(graphite, carbon black), hydrocarbon compound(melamine, sugar) and mixture thereof; (iii) forming, drying and sintering at 500-1200deg.C for more than 1hrs. Also, the following Ag-coating step can be added: soaking the ceramic filter silver into salt solution containing 1-20wt.% of Ag+ ions; drying and sintering it at 500-1200deg.C for more than 30min.
Abstract translation: 目的：提供一种多孔陶瓷过滤器的制备方法，特别是应用于具有过滤效果和抗菌效果的净水器，其简化了净水器的结构，并通过将Ag分散在陶瓷原料中而提高了抗菌耐久性。 方法：该方法包括以下步骤：（i）将70-99.9重量％的由一种或多种粘土，高岭土，长石和陶石组成的陶瓷材料与0.1-30重量％的银盐如乙酸银， 碳酸银和草酸银; （ii）将30-95重量％的步骤（i）的陶瓷材料与5-70重量％的粉末状易燃材料如碳化合物（石墨，炭黑），烃化合物（三聚氰胺，糖）及其混合物混合; （iii）在500-1200℃下成型，干燥和烧结1小时以上。 此外，可以加入以下Ag-涂层步骤：将陶瓷过滤器银浸入含有1-20重量％Ag +离子的盐溶液中; 干燥并在500-1200℃烧结30多分钟。
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公开(公告)号：KR1020000073209A
公开(公告)日：2000-12-05
申请号：KR1019990016360
申请日：1999-05-07
Applicant: 한국과학기술연구원
CPC classification number: C05G3/0082 , C05G3/0029
Abstract: PURPOSE: A manufacturing method of prolonged action granular fertilizer is provided to improve heat resistance and durability by using a coating material mainly composed of rosin derivatives containing zinc with having an initial melting point of 75°C or higher. CONSTITUTION: An initial coating material is mixed 70-98 wt.% of rosin derivatives containing zinc with having an initial melting point of 75°C or higher, and 2-30 wt.% of propenic acid polymer, and then is dissolved in an organic solvent to be the concentration of 1-50 wt.%. The initial coating material is basically coated to be 2-30 wt.% compared to granular fertilizer. A mixture contains 30-85 wt.% of rosin derivatives and 15-70 wt.% of thermoplastic resin having the hardening temperature of 90°C or higher. A protective film is manufactured by dissolving in the organic solvent to be 1-50 wt.% concentration. The mixture is protectively coated to be 2-10 wt.% compared to basically coated granular fertilizer and is heat-treated until the hardening of the thermoplastic resin is completed.
Abstract translation: 目的：提供延长作用颗粒肥料的制造方法，通过使用主要由含锌的松香衍生物形成的初始熔点为75℃以上的涂料，提高耐热性和耐久性。 构成：将初始涂料混合70-98重量％的含锌初始熔点为75℃以上的松香衍生物和2-30重量％的丙烯酸聚合物，然后溶于 有机溶剂的浓度为1-50重量％。 与颗粒肥料相比，初始涂料基本上涂覆至2-30重量％。 混合物含有30-85重量％的松香衍生物和15-70重量％的硬化温度为90℃或更高的热塑性树脂。 通过将有机溶剂溶解在1-50重量％的浓度来制造保护膜。 与基本涂覆的颗粒肥料相比，该保护涂层被保护涂层为2-10重量％，并进行热处理，直到热塑性树脂硬化完成。
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Patent Agency Ranking
公开(公告)号：KR1019950010970A
公开(公告)日：1995-05-15
申请号：KR1019930021010
申请日：1993-10-11
IPC: B05C3/02
Abstract: 본 발명은 입자의 크기가 불균일한 구형입자들의 혼합물에 균일한 두께의 피막이 형성되록 피복하는데 적합한 경사형 원통회전식 입자피복장치에 관한 것이다. 본 발명의 장치는 입자의 피복이 수행되는 회전원통체를 구성함에 있어 원추형의 경사내통체가 외통체 내부에 삽입되어 이루어진 단위 원통체 여러개를 연속적으로 연결하되 각 연결부에 환형의 격벽을 개재시킨 구성을 취하고 있다. 이와같은 본 발명은 피복대상 입자의 크기가 불균일한 경우 입자의 크기가 큰 입자에 대해서는 회전원통체 내에서의 진행속도를 빠르게 하는 한편 작은 입자에 대해서는 느리게 진행하도록 하여 입자크기별 회전원통체내 체류시간의 차이를 둠으로써 입자의 크기에 관계없이 모든 입자에 대해 균일한 두께의 피막형성이 가능하다는 장점이 있다.
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公开(公告)号：KR1019950002341B1
公开(公告)日：1995-03-16
申请号：KR1019910022161
申请日：1991-12-04
Applicant: 한국과학기술연구원
IPC: C05D9/00
Abstract: The solubility of granule-type fertilizer is controlled by coating it with the solubility-controllable compound. The coating compound is manufactured by mixing or by reacting the rosin 50-100 wt.%, water-insoluble metal compound 0-10 wt.% such as aliphatic compound of aluminum, calcium, copper, magnesium or zinc or silicofluoride of calcium or lithium or rosin-reactive alkaki earth metal, and high polymer 0-50 wt.% such as paraffin wax, ethyl cellulose, benzyl cellulose, alkyd resin, phenol resin, or PVC.
Abstract translation: 颗粒型肥料的溶解度通过用可溶解度控制的化合物包衣来控制。 通过将松香50-100重量％的水不溶性金属化合物0-10重量％如铝，钙，铜，镁或锌的脂肪族化合物或钙或锂的氟化硅反应来制造涂料化合物 或松香反应性碱土金属，以及0-50重量％的高分子，例如石蜡，乙基纤维素，苄基纤维素，醇酸树脂，酚醛树脂或PVC。
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公开(公告)号：KR100441405B1
公开(公告)日：2004-07-23
申请号：KR1020010067893
申请日：2001-11-01
Applicant: 한국과학기술연구원
IPC: C02F1/48
CPC classification number: C02F1/5245 , C02F2101/10 , C02F2101/105 , C02F2101/12 , C02F2101/163 , Y10S210/912
Abstract: The present disclosure relates to a method for removing anions such as nitrate ion, sulfate ion, chloride ion, and phosphate ion existing in underground water, surface water or waste water. The method involves adding alumina cement and a calcium compound to the water containing the anion followed by applying an electric field thereto, thereby forming a chemical precipitate which is an insoluble complex salt. The disclosure also relates to a continuous process for removing the anion by continuously performing the above method for removing anions.
Abstract translation: 本发明涉及去除地下水，地表水或废水中存在的硝酸根离子，硫酸根离子，氯离子，磷酸根离子等阴离子的方法。 该方法包括向含有阴离子的水中加入氧化铝水泥和钙化合物，接着向其施加电场，由此形成化学沉淀物，该化学沉淀物是不溶性复盐。 本发明还涉及通过连续进行上述去除阴离子的方法去除阴离子的连续方法。
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公开(公告)号：KR100362066B1
公开(公告)日：2002-11-23
申请号：KR1020000047155
申请日：2000-08-16
Applicant: 한국과학기술연구원
IPC: C02F1/52
Abstract: 본 발명의 화학적 기계적 연마의 폐수 처리 방법은 화학적 기계적 연마의 폐수에 현탁되어 있는 SiO
2 미립자를 제거하기 위하여 칼슘화합물, 양이온 고분자응집제, 알룸, 및 음이온 고분자응집제를 투입하여 폐수와 응집제를 교반하되, 교반 속도 또는 교반 시간을 차별화하는 것이다. 본 발명에 의하면, 크기가 크고 점착도가 낮은 SiO
2 미립자응집체를 형성시킬 수 있으므로, 화학적 기계적 연마의 폐수에 포함되어 있는 SiO
2 미립자를 단층 여과막으로 쉽게 분리할 수 있으며, 여과막을 짧은 시간에 역세척할 수 있다.
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