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公开(公告)号：KR101178769B1
公开(公告)日：2012-09-07
申请号：KR1020100093452
申请日：2010-09-27
Applicant: 한국과학기술연구원 , 주식회사 세화엔스텍
CPC classification number: Y02P10/212
Abstract: 본 발명은 LiFePO
4 를 포함하는 인산화물계 리튬전지 양극활물질로부터 리튬을 회수하는 방법에 관한 것으로서, 본 발명의 LiFePO
4 를 포함하는 인산화물계 리튬전지 양극활물질로부터의 리튬 회수 방법은 (a) LiFePO
4 를 포함하는 인산화물계 리튬전지 양극활물질과 철 분말을 인산 수용액에 용해시켜 LiFePO
4 가 용해된 용액을 얻는 단계, (b) 상기 LiFePO
4 가 용해된 용액에 가성 소다를 첨가하여 철 및 불순물을 침전 분리하는 단계 및 (c) 단계 (b)를 거친 LiFePO
4 가 용해된 용액과 에탄올을 혼합하여 리튬을 인산리튬으로 침전 분리하는 단계를 포함하여 이루어지고, 단계 (c) 이후에, (d) 상기 침전 분리된 인산리튬을 에탄올로 세척하여 불순물을 제거하고 인산리튬을 얻는 단계를 더 포함할 수 있다.-
公开(公告)号：KR1020100012692A
公开(公告)日：2010-02-08
申请号：KR1020080074225
申请日：2008-07-29
Applicant: 한국과학기술연구원
IPC: B01D69/00
Abstract: PURPOSE: A sulfur hexafluoride separation module and a sulfur hexafluoride recovery device using the same are provided to effectively recover SF6 by constituting a plurality of gas separation tubes with a material of which absorption of the SF6 is minimized. CONSTITUTION: A sulfur hexafluoride separation module includes a chamber(120) and a gas separation membrane(110) consisting of a plurality of gas separation tubes(111) and quipped inside the chamber. A plurality of gas discharge holes(112) is equipped on the surface of the gas separation tubes. The diameter of the gas discharge hole is smaller than the molecular diameter of the SF6. A sulfur hexafluoride recovery device includes a mixed gas supply tank, a mixed gas stabilization tank, an SF6 separation module, and a temperature maintaining device.
Abstract translation: 目的：提供六氟化硫分离组件和使用该六氟化硫的六氟化硫回收装置，通过构成多个具有SF6吸收最小化的气体分离管来有效地回收SF 6。 构成：六氟化硫分离模块包括由多个气体分离管（111）组成的腔室（120）和气体分离膜（110），并在该腔室内部。 在气体分离管的表面上设置有多个排气孔（112）。 气体排出孔的直径小于SF6的分子直径。 六氟化硫回收装置包括混合气体供应罐，混合气体稳定罐，SF6分离模块和温度保持装置。
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公开(公告)号：KR1020080016371A
公开(公告)日：2008-02-21
申请号：KR1020060078431
申请日：2006-08-18
Applicant: 한국과학기술연구원
Inventor： 이화영
Abstract: 본발명은금속염화물을증발시킨후 고온에서수소가스와의환원반응을통해금속분말을얻는기상반응법에있어서, 수소가스와함께소량의암모니아가스를동시에공급하여금속염화물과수소의반응으로생성된금속나노입자핵이상호충돌이나핵 성장과정에서금속입자가임의로성장하는것을효과적으로방지함으로써, 종래의방법에비해보다입도가작고, 매우균일한금속나노분말을얻을수 있다.
Abstract translation: 提供金属纳米粉末的制备方法，以低成本制备粒径小，粒径分布非常窄的纳米粉末。 金属纳米粉末的制备方法包括以下步骤：提供氮气以蒸发作为原料的金属氯化物; 同时通过氢气与蒸发的金属氯化物蒸气的还原反应同时供应氢气和氨气，同时保持氮气的供应以获得金属纳米粉末。 独立地供给氮气和氢气。 该制备方法包括将氮气与氢气的比例控制在1：1至5：1的范围内，并将氢气与氨气的比例控制在5：1至10：1的范围内 。 金属氯化物选自氯化镍，氯化钨，氯化铁，氯化铬和氯化铜。 该制备方法包括将氯化镍的蒸发温度控制在780〜850℃的范围内，并将蒸发的氯化镍蒸气与氢气与氨气之间的反应温度控制在500〜900℃的范围内 在金属氯化物为氯化镍的情况下。
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公开(公告)号：KR100458402B1
公开(公告)日：2004-11-26
申请号：KR1020020084736
申请日：2002-12-27
Applicant: 한국과학기술연구원
IPC: C02F1/26
Abstract: PURPOSE: A solvent extraction method for recovering heavy metals from electroplating wastewater containing heavy metals such as iron, zinc, copper and nickel by using 2-ethylhexyl hydrogen 2-ethylhexyl phosphate as an extractant is provided. CONSTITUTION: In a method for recovering heavy metals including iron, zinc, copper and nickel from electroplating wastewater by solvent extraction, the method comprises first extraction step of recovering iron and zinc by extracting iron and zinc from the electroplating wastewater using an organic solution prepared by mixing 2-ethylhexyl hydrogen 2-ethylhexyl phosphate in the non-saponification state as an extractant with organic solvent together with third phase preventing agent; and second extraction step of recovering copper and nickel by extracting copper and nickel from an electroplating wastewater from which iron and zinc are extracted in the first extraction step using an organic solution prepared by mixing the extractant in the saponification state with organic solvent together with third phase preventing agent.
Abstract translation: 目的：提供一种溶剂萃取方法，以2-乙基己基氢氧化2-乙基己基酯作为萃取剂，从含有重金属如铁，锌，铜和镍的电镀废水中回收重金属。 本发明涉及一种用电解废水中的铁，锌，铜和镍通过溶剂萃取来回收重金属的方法，该方法包括第一萃取步骤，通过使用有机溶液从电镀废水中萃取铁和锌来回收铁和锌 将非皂化状态的2-乙基己基氢氧化2-乙基己基酯作为萃取剂与有机溶剂一起与第三相防止剂混合; 和第二提取步骤，通过使用通过将皂化状态的萃取剂与有机溶剂混合而制备的有机溶液与第三阶段一起从在第一萃取步骤中萃取铁和锌的电镀废水中萃取铜和镍来回收铜和镍 防止剂。
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Patent Agency Ranking
公开(公告)号：KR100444358B1
公开(公告)日：2004-08-16
申请号：KR1020020019137
申请日：2002-04-09
Applicant: 한국과학기술연구원
Abstract: PURPOSE: A surface modification method of activated carbon for wastewater treatment is provided, which improves adsorption capacity of recalcitrant organic contaminants of industrial wastewater by reducing the surface of activated carbon. CONSTITUTION: The surface modification method of activated carbon comprises the process of reducing activated carbon by directly reacting dithionite ions (S2O4¬2-) produced through electrolysis of sulfurous acid gas with activated carbon, wherein the activated carbon surface modification method is performed by carrying out electrolysis as agitating the activated carbon after injecting activated carbon into the cathode chamber of an electrolytic cell comprising cathode chamber, anode chamber and separation membrane positioned between the cathode chamber and anode chamber and using an aqueous sulfuric acid solution into which sulfurous acid gas is dissolved as a cathode solution and an aqueous sulfuric acid solution as an anode solution, wherein anode plate of the electrolytic cell used for electrolysis is lead or graphite, cathode plate is stainless steel or graphite, and current density is 10 to 200 mA/cm¬2, wherein 0.1 to 2.0 M of sulfuric acid solution saturated with sulfurous acid gas is used as the cathode solution, and wherein the sulfurous acid gas is consistently supplied into the cathode chamber from the outside during the process of performing electrolysis after injecting only the sulfuric acid solution as the cathode solution into the cathode chamber.
Abstract translation: 目的：提供一种废水处理用活性炭表面改性方法，通过减少活性炭表面，提高工业废水中难降解有机污染物的吸附能力。 组成：活性炭的表面改性方法包括通过使通过亚硫酸气体的电解产生的连二亚硫酸根离子（S2O4→2）与活性炭直接反应来还原活性碳的过程，其中活性炭表面改性方法通过进行 在将活性炭注入到包括阴极室，阳极室和位于阴极室和阳极室之间的分离膜并且使用溶解有亚硫酸气体的硫酸水溶液的分离膜的电解池的阴极室中之后搅拌活性炭来进行电解 阴极溶液和硫酸水溶液作为阳极溶液，其中用于电解的电解槽的阳极板为铅或石墨，阴极板为不锈钢或石墨，电流密度为10-200mA / cm 2; 其中0.1至2.0M硫酸饱和的硫酸溶液 使用酸性气体作为阴极溶液，并且其中在将仅作为阴极溶液的硫酸溶液注入阴极室之后进行电解的过程中，亚硫酸气体始终从外部供应到阴极室中。
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公开(公告)号：KR1020040016051A
公开(公告)日：2004-02-21
申请号：KR1020020048248
申请日：2002-08-14
Applicant: 한국과학기술연구원
Inventor： 이화영
IPC: C02F1/74
Abstract: PURPOSE: Provided are an apparatus and a method for treating wastewater, which can eliminate volatile compounds such as ammonia from wastewater in short time. CONSTITUTION: The apparatus comprises a tank(10) with a wastewater inlet(11) and a treated water outlet(13), a wastewater circulation pipe line(30) connected to the tank(10) for circulating wastewater in the tank(10) by a pump, a treatment gas supply unit(31) for supplying treatment gas to remove volatile compounds in wastewater, a treatment gas suction unit(40) connected to the treatment gas supply unit(31) and installed on the wastewater circulation pipe line(30) for sucking the treatment gas into the wastewater circulation pipe(30) to be mixed with wastewater while it passes through the circulation pipe(30), a treatment gas exhausting unit(15) for exhausting the treatment gas combined with the volatile compounds from the tank(10), a fluidity control unit for controlling fluidity of wastewater in the tank, a temperature control unit(17) for controlling a temperature of wastewater in the tank(10) to 40 to 80 deg.C, and a pH control unit(16) for controlling pH of wastewater to 10 to 13, wherein the wastewater circulation pipe line(30) includes a first circulation pipe through which wastewater is introduced and a second circulation pipe through which wastewater flows out, and wherein the treatment gas suction unit includes a casing connected to the treatment gas supply unit and having an inner space keeping constant pressure, a nozzle installed in the casing and connected to the first circulation pipe for increasing flow rate of wastewater, and a connection pipe installed in the casing to surround an end of the nozzle having a distance between the inner surface thereof with the outer surface of the nozzle.
Abstract translation: 目的：提供一种处理废水的设备和方法，可以在短时间内消除废水中的挥发性化合物如氨。 构成：该装置包括具有废水入口（11）和处理水出口（13）的罐（10），与罐（10）连接的废水循环管线（30），用于使罐（10）中的废水循环， 通过泵，提供处理气体以除去废水中的挥发性化合物的处理气体供应单元（31），连接到处理气体供应单元（31）并且安装在废水循环管线上的处理气体抽吸单元（40） 30），用于将废气循环管道（30）吸入废水循环管道（30）中，与循环管道（30）通过废水混合处理气体排出单元（15），排出与挥发性化合物组合的处理气体 罐（10），用于控制罐中废水流动性的流动性控制单元，用于将罐（10）中的废水温度控制在40至80℃的温度控制单元（17）和pH控制 用于控制废水pH值为10至13的单元（16） 其特征在于，所述废水循环管路（30）具有引入废水的第一循环管和废水流出的第二循环管，所述处理气体抽吸单元包括与所述处理气体供给单元连接的壳体， 保持恒定压力的内部空间，安装在壳体中并连接到第一循环管的喷嘴以增加废水的流量;以及连接管，其安装在壳体中以围绕其内表面之间的距离的喷嘴的端部 与喷嘴的外表面。
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公开(公告)号：KR100406984B1
公开(公告)日：2003-11-28
申请号：KR1020010009062
申请日：2001-02-22
Applicant: 한국과학기술연구원
IPC: C25D5/00
Abstract: PURPOSE: A method for manufacturing a porous metal material by solution diffusion plating is provided to manufacture the porous metal material that can be widely used in such applications as electronic components, air conditioning equipment, filters for water treatment and construction materials. CONSTITUTION: In a method for manufacturing a porous metal material by covering a metallic coating film on a matrix through electroless plating and electroplating using a porous material as the matrix, the method for manufacturing the porous metal material by solution diffusion plating comprises the steps of forming a metallic coating film by electroless plating a matrix made of a porous material; forming a high concentration part(20) by increasing concentration of metal ions at any one side of an electrolytic cell(10) separated by a separation membrane having micro-pores, and forming a low concentration part(25) by relatively lowering concentration of metal ions at the one side of an electrolytic cell(10) separated by the separation membrane having micro-pores; installing a matrix on which a metallic coating film is formed by electroless plating and a metal supplying metal ions in the low concentration part(25); and impressing the anode to the metal, and impressing the cathode to the matrix so that a metallic coating film is formed on the matrix to a uniformed thickness by diffusion of ions proceeded from the high concentration part(20) to the low concentration part(25) and electrolysis of the metal.
Abstract translation: 目的：提供一种通过溶液扩散镀制造多孔金属材料的方法，以制造可广泛用于电子元件，空调设备，水处理过滤器和建筑材料等应用的多孔金属材料。 本发明提供一种多孔质金属材料的制造方法，该多孔质金属材料的制造方法是通过无电解电镀在基体上覆盖金属覆膜，使用多孔质材料作为基体进行电镀的方法，其特征在于，通过溶液扩散电镀制造多孔质金属材料的方法包括： 通过无电镀覆由多孔材料制成的基体而形成金属涂覆膜; 通过提高在由具有微孔的分离膜分离的电解池（10）的任何一侧的金属离子浓度，形成高浓度部分（20），并通过相对降低金属浓度形成低浓度部分（25） 在由具有微孔的分离膜分离的电解池（10）的一侧处的离子; 在所述低浓度部分（25）中安装其上通过无电镀形成金属涂层膜并且提供金属离子的金属的基体; 并且将阳极压印到金属上，并且将阴极压印到基体上，从而通过从高浓度部分（20）向低浓度部分（25）进行的离子的扩散，在基体上形成金属涂层膜以达到均匀的厚度 ）和金属的电解。
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公开(公告)号：KR1020020027117A
公开(公告)日：2002-04-13
申请号：KR1020000058963
申请日：2000-10-06
Applicant: 한국과학기술연구원
IPC: C01G25/04
CPC classification number: C01G25/04 , C01P2006/80
Abstract: PURPOSE: A preparation method of high purity zirconium oxychloride from zircon sand is provided to save production cost and prevent environmental pollution by melt decomposition using lime instead of NaOH in a conventional method. CONSTITUTION: The preparation method of zirconium oxychloride(ZrOCl2·8H2O) from zircon sand is as follows: mixing zircon sand, CaCO3 and CaCl2 to be a molar ratio, 3CaCO3/ZrSiO4 of 1.0-1.2, and CaCl2/3CaCO3 of 0.1-0.4, and reacting at 1100-1300deg.C for 1-2hrs. for melt decomposition of zircon sand; leaching sintered zircon sand(solid content:10%) containing a large quantity of CaZrO3 and Ca2SiO4 with 4-6vol.% of HCl at room temperature firstly, and leaching with 15-25vol.% of HCl at 80deg.C secondly to remove silica and trace of element; evaporating and concentrating an aqueous zirconium solution to form zirconium oxychloride crystals.
Abstract translation: 目的：提供锆石砂的高纯度氯氧化锆的制备方法，以常规方法利用石灰代替NaOH，节省生产成本，并通过熔融分解来防止环境污染。 构成：锆石砂的氯氧化锆（ZrOCl 2·8H 2 O）的制备方法如下：将锆石砂，CaCO3和CaCl2混合为摩尔比，3CaCO3 / ZrSiO4为1.0-1.2，CaCl2 / 3CaCO3为0.1-0.4， 并在1100-1300℃反应1-2小时。 用于锆石砂的熔融分解; 首先在室温下浸出含有大量HCl的4-6％（体积）HCl的大量CaZrO3和Ca2SiO4的烧结锆石砂（固含量：10％），然后用15-25％（体积）的HCl在80℃下浸出二次以除去二氧化硅 元素痕迹; 蒸发并浓缩锆水溶液以形成氯氧化锆晶体。
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公开(公告)号：KR1019980035667A
公开(公告)日：1998-08-05
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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