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公开(公告)号：KR1020040096668A
公开(公告)日：2004-11-17
申请号：KR1020030029555
申请日：2003-05-10
Applicant: 한국과학기술연구원
IPC: C22B58/00
CPC classification number: Y02P10/214 , Y02P10/234
Abstract: PURPOSE: To recover high purity gallium from zinc residues generated from the zinc refining process as a waste matter by using a wet type treatment method. CONSTITUTION: The method comprises a step of neutralizing and settling an eluate after eluting zinc residues by using an alkali solution; a step of remelting gallium sediment with a hydrochloric acid solution; a step of reverse extracting gallium by using water after solvent extracting gallium by using isopropyl ether as an extraction solvent; a step of removing iron by using di(2-ethylhexyl) phosphoric acid as an extraction solvent; and a step of electrolytically collecting gallium from gallium solution.
Abstract translation: 目的：通过使用湿法处理方法，从作为废物的锌精炼工艺产生的锌残渣中回收高纯度镓。 方法：该方法包括使用碱溶液洗脱锌残渣后中和沉淀洗脱液的步骤; 用盐酸溶液重熔镓沉淀物的步骤; 通过使用异丙醚作为提取溶剂，在溶剂萃取镓之后使用水反向萃取镓的步骤; 通过使用二（2-乙基己基）磷酸作为提取溶剂除铁的步骤; 以及从镓溶液中电解收集镓的步骤。
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公开(公告)号：KR1020030070331A
公开(公告)日：2003-08-30
申请号：KR1020020009828
申请日：2002-02-25
Applicant: 한국과학기술연구원
IPC: C22B11/00
Abstract: PURPOSE: A method for recovering gold and silver from acidic thiourea aqueous solution using iron powder is provided to environment friendly and efficiently recover and separate gold and silver from the acidic thiourea aqueous solution containing gold, silver and other trace of impurities by using iron powder as precipitant. CONSTITUTION: The method for recovering gold and silver from acidic thiourea aqueous solution using iron powder comprises the steps of adding iron powder as precipitant to the acidic thiourea aqueous solution as injecting nitrogen gas into an acidic thiourea aqueous solution in which gold ore is leached; and selectively precipitating gold and silver in the acidic thiourea aqueous solution by stirring the acidic thiourea aqueous solution as continuously injecting the nitrogen gas into the acidic thiourea aqueous solution, wherein the nitrogen gas is injected into the acidic thiourea aqueous solution at a flux of 200 to 400 mL/min, wherein size of the iron powder corresponds to a sieve size of 100 to 200 meshes, and the iron powder is added to the acidic thiourea aqueous solution in an amount of 3 to 5 g/L, wherein temperature of the precipitation is maintained to 20 to 30 deg.C, wherein speed of the stirring is maintained to 200 to 300 rpm, and wherein time of the precipitation is maintained to 30 to 40 minutes.
Abstract translation: 目的：使用铁粉从酸性硫脲水溶液中回收金和银的方法，通过使用铁粉作为环境友好型，有效地从含有金，银和其他痕量杂质的酸性硫脲水溶液中回收和分离金和银 沉淀。 构成：使用铁粉从酸性硫脲水溶液中回收金和银的方法包括将铁粉作为沉淀剂加入到酸性硫脲水溶液中，将氮气注入到其中浸出金矿的酸性硫脲水溶液中; 并在酸性硫脲水溶液中选择性地沉淀金和银，通过搅拌酸性硫脲水溶液，将氮气连续注入酸性硫脲水溶液中，氮气以200〜 400mL / min，其中铁粉的尺寸对应于100至200目的筛子尺寸，铁粉以3至5g / L的量加入酸性硫脲水溶液中，其中沉淀温度 保持在20〜30℃，其中搅拌速度保持在200〜300rpm，其中沉淀时间保持在30〜40分钟。
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公开(公告)号：KR1020030058753A
公开(公告)日：2003-07-07
申请号：KR1020010089287
申请日：2001-12-31
Applicant: 한국과학기술연구원
IPC: C02F1/28
Abstract: PURPOSE: Provided are an adsorbent with great adsorbent efficiency for removing ammonia nitrogen in wastewater and a method for manufacturing the same. CONSTITUTION: The adsorbent comprises activated carbon powder, organic binder and organic acid and may further comprises alumina powder and/or silica powder. The method comprises the steps of (a) surface processing of adsorbent raw material powder such as activated carbon powder, alumina powder and silica powder using organic binder and organic acid, thereby forming granular type adsorbent, and (b) drying and heating the granular type adsorbent.
Abstract translation: 目的：提供一种具有很好的吸附剂去除废水氨氮的吸附剂及其制造方法。 构成：吸附剂包括活性炭粉末，有机粘合剂和有机酸，还可包含氧化铝粉末和/或二氧化硅粉末。 该方法包括以下步骤：（a）使用有机粘合剂和有机酸对活性炭粉末，氧化铝粉末和二氧化硅粉末等吸附剂原料粉末进行表面处理，从而形成粒状吸附剂，（b）干燥并加热粒状 吸附剂。
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公开(公告)号：KR1020000074241A
公开(公告)日：2000-12-15
申请号：KR1019990018024
申请日：1999-05-19
Applicant: 한국과학기술연구원
IPC: F28F21/00
Abstract: PURPOSE: A copper heat sink and method of manufacturing the same is provided to achieve a maximized radiation efficiency, improved performance and prolonged lifespan. CONSTITUTION: A copper heat sink comprises a copper frame(1) having a sponge-like structure having a plurality of air pores, and an aluminum(2) injected into a predetermined thickness beneath the copper frame. The thickness of the aluminum is 1 to 2mm. A method comprises the steps of performing an electroless plating onto a base so as to provide conductivity to the base, performing copper plating to the base and forming a copper film of a predetermined thickness, performing heat-treatment to the base and obtaining a sponge-like structured copper frame, and dipping the copper frame into a molten aluminum so that aluminum is injected to a lower portion of the frame.
Abstract translation: 目的：提供铜散热器及其制造方法，以实现最大的辐射效率，改进的性能和延长的寿命。 构成：铜散热器包括具有多个空气孔的海绵状结构的铜框架（1）和在铜框架下方注入预定厚度的铝（2）。 铝的厚度为1〜2mm。 一种方法包括以下步骤：在基底上进行化学镀以向基底提供导电性，对基底进行镀铜并形成预定厚度的铜膜，对基底进行热处理并获得海绵状， 像结构化的铜框架，并且将铜框架浸入熔融铝中，使得铝被注入到框架的下部。
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公开(公告)号：KR100172080B1
公开(公告)日：1999-10-01
申请号：KR1019960054077
申请日：1996-11-14
Applicant: 한국과학기술연구원
IPC: C02F5/00
Abstract: 본 발명은 산업 폐수를 증발 농축기를 사용하여 처리하는 경우에 있어서 야기되는 농축기 내의 스케일 부착 방지 방법에 관한 것이다. 본 발명의 방법은 증발 농축기에 유입될 폐수에 대해 pH를 2 내지 10 범위로 조절하여 상온 내지 50 ℃ 범위에서 염화바륨을 첨가하여 30 분 내지 2 시간 동안 교반시켜 폐수 중의 황산 이온을 침전 제거시키고, 이어서 계면 활성제를 폐수 기준으로 10 ppm 내지 0.1 중량% 첨가시켜 표면 장력을 35 dyne/cm 이하로 감소시키는 처리를 수행하는 것으로 이루어진다. 본 발명의 방법에 따르면, 스케일 제거를 위해 농축기의 가동을 중지시키는 일이 없이 장기간 처리 효율을 유지시킬 수 있으며, 처리 비용이 매우 저렴하고 장치 부식 문제를 전혀 야기시키지 않는다.
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Patent Agency Ranking
公开(公告)号：KR1019970009958A
公开(公告)日：1997-03-27
申请号：KR1019960052377
申请日：1996-11-06
IPC: B23K23/00
Abstract: 용접성이 개선된 테르밋재 및 그의 제조 방법이 기재되어 있다. 이 방법에 의한 테르밋재는 알루미늄 40∼60중량%와 구리 60∼40중량%로 이루어진 35∼80메쉬 CuAl
2 금속간 화합물과 산소 함량이 9∼11%인 산화구리로 이루어진다. 이 테르밋재에 사용되는 산화구리 분말은, 바람직하게 구리 분말에 전분을 첨가하여 저압 성형한 후 분쇄하고, 이를 300∼600℃에서 2∼5시간 산화시켜 제조한다. 상기 테르밋재에 혼합되는 구리/알루미늄 금속간 화합물과 산화구리의 조성 및 입도를 적절하게 조정하여 테르밋재의 용접성을 향상시킨다.
〔대표도〕제4도-
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公开(公告)号：KR1019940009255B1
公开(公告)日：1994-10-06
申请号：KR1019910013858
申请日：1991-08-12
Applicant: 한국과학기술연구원
IPC: B01J27/18
CPC classification number: C07C41/09 , B01J8/009 , B01J8/02 , B01J19/2475 , B01J2208/00061 , B01J2208/0053 , B01J2208/00539 , C07C1/24 , C07C2527/18 , Y02P20/52 , C07C11/04 , C07C43/06
Abstract: The method is for reactor using single process that has both reaction and separation. A heteropoly acid synthesized by Tsigdinos method is H3PO12O14, H3PMo12O40, H3PMoxW12-xO40, H4SiW12O40. The thickness of polysulfone membrane is 0.266 mm. This is useful for production of ethylene by a gaseous dehydration reaction at below 15 deg.C.
Abstract translation: 该方法是使用具有反应和分离的单一过程的反应器。 通过Tsigdinos法合成的杂多酸是H3PO12O14，H3PMo12O40，H3PMoxW12-xO40，H4SiW12O40。 聚砜膜的厚度为0.266mm。 这对于在低于15℃的气态脱水反应生产乙烯是有用的。
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