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公开(公告)号：KR1020040032299A
公开(公告)日：2004-04-17
申请号：KR1020020061374
申请日：2002-10-09
Applicant: 한국과학기술연구원
IPC: C22B3/08
CPC classification number: Y02P10/234
Abstract: PURPOSE: A method for recovering gold from gold concentrate by acid thiourea process is provided to leach gold from an acid thiourea aqueous solution environmentally and efficiently by using sulfuric acid as an acidity adjusting agent, thiourea as a leaching agent and air externally injected along with iron ions as an oxidizer. CONSTITUTION: The method comprises the steps of polishing gold concentrate; adding sulfuric acid as an acidity adjusting agent and thiourea as a leaching agent to an aqueous solution containing the polished gold concentrate; and leaching gold from the gold concentrate contained in an acid thiourea aqueous solution using air injected from the outside along with iron ions dissolved from the gold concentrate, wherein the gold concentrate in the polishing step has a grain size corresponding to a sieve size of 400 meshes or less, wherein an ore solution of the gold concentrate has a concentration of 5 to 15 g/L, wherein the sulfuric acid has a concentration of 1 to 3 wt.%, wherein the thiourea has a concentration of 3 to 6 wt.%, wherein the air along with the iron ions dissolved from the gold concentrate is injected into the solution in a flow rate of 100 to 200 ml/min in the leaching step, wherein the leaching step is performed by agitating the solution to an agitation speed of 300 to 400 revolutions per minute, and wherein the leaching step is performed at a reaction temperature of 20 to 30 deg.C for 3 to 4 hours.
Abstract translation: 目的：提供一种通过酸性硫脲方法从金浓缩物中回收金的方法，通过使用硫酸作为酸度调节剂，硫脲作为浸出剂和外部与铁一起注入的空气，环境和有效地从酸性硫脲水溶液中浸取金 离子作为氧化剂。 构成：该方法包括抛光金精矿的步骤; 将硫酸作为酸度调节剂和硫脲作为浸出剂加入到含有抛光金精矿的水溶液中; 以及使用从外部注入的空气以及从金浓缩物中溶解的铁离子，从酸性硫脲水溶液中的金浓缩物中浸出金，其中在研磨步骤中的金浓缩物具有对应于400目筛 其中所述金浓缩物的矿石溶液的浓度为5至15g / L，其中所述硫酸的浓度为1至3重量％，其中所述硫脲的浓度为3至6重量％ 其中在浸出步骤中将空气与从金浓缩物溶解的铁离子一起以100-200ml / min的流速注入溶液中，其中浸出步骤通过将溶液搅拌至搅拌速度 300〜400转/分钟，其中浸出步骤在20〜30℃的反应温度下进行3〜4小时。
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公开(公告)号：KR1019960003546A
公开(公告)日：1996-02-23
申请号：KR1019940016807
申请日：1994-07-13
Applicant: 한국과학기술연구원
IPC: A01G1/00
Abstract: 본 발명은 기지 토양의 주원료로서 입도 5mm 이하인 분말 형태의 광물질 점토인 규조토 20 내지 90중량%, 제올라이트 10 내지 50중량% 및 벤토나이트 0 내지 30중량%를 혼합하는 단계, 상기 혼합물에 약 0.1 내지 1.5중량%의 명반 또는 황산알루미늄 등의 수용성 알루미늄 혼합물의 용액을 첨가하여 상토의 pH가 약 3 내지 7이고 수분 함량이 약 15 내지 50%가 되도록 혼합하는 단계, 상기 단계에서 얻은 입자들을 입도 10mm 이하로 조립하여 미립의 광물질 점토를 응집시키는 단계를 포함하는 것을 특징으로 하여, 보습율, 보수율 및 투수성 등의 물리화학적 특성이 향상된 육모용 상토의 제조 방법에 관한 것이다.
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公开(公告)号：KR1019960000647B1
公开(公告)日：1996-01-11
申请号：KR1019920022561
申请日：1992-11-27
Applicant: 한국과학기술연구원
IPC: B01D11/04
Abstract: first extracting zirconium solution containing hafnium with Versatic acid 10 of 0.5-2.0M in organic solvent, second extracting the organic component with aqueous solution containing HCl of 0.5-2.0M; obtaining ZrOCl28H2O crystal by vaporizing and concentrating an aqueous solution containing Zr; and hydrolyzing ZrOCl28H2O crystal with amnia, and baking.
Abstract translation: 首先用有机溶剂中的0.5-2.0M的Versatic酸10萃取含有铪的锆溶液，然后用0.5-2.0M的HCl水溶液萃取有机组分; 通过蒸发并浓缩含Zr的水溶液获得ZrOCl28H2O晶体; 并用氨纶水解ZrOCl28H2O晶体，烘烤。
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Patent Agency Ranking
公开(公告)号：KR100524345B1
公开(公告)日：2005-10-28
申请号：KR1020030043206
申请日：2003-06-30
Applicant: 한국과학기술연구원
IPC: C22B34/30
Abstract: 본 발명은 추출제로 트리옥틸 메틸암모늄 클로라이드를 제3상 방지제와 함께 유기용매와 혼합한 유기용액을
사용하여 용매추출법에 의해 6가 크롬을 추출하는 제1 추출 단계와, 역추출제로 알칼리 용액을 사용하여 유기용액에 함유된 6가 크롬을 역추출하는 제2 추출 단계를 포함한다.
본 발명의 방법에 따르면, 회수된 6가 크롬을 크롬 도금액의 원료로 재사용할 수 있을 뿐만 아니라, 역추출 후 추출제를 다시 사용할 수 있어 경제적인 회수 방법을 제공할 수 있고, 공정이 간편하고 반응이 빠르며 6가 크롬의 회수율과 농축 효과가 높다.-
公开(公告)号：KR100502883B1
公开(公告)日：2005-07-25
申请号：KR1020020040014
申请日：2002-07-10
Applicant: 한국과학기술연구원
IPC: C22B3/24
CPC classification number: Y02P10/234
Abstract: 본 발명은 흡착제로서 활성탄을 사용하여 금, 은 및 철과 기타 미량의 불순 원소들이 함유된 산성 티오요소 수용액 중의 금을 흡착하는 단계, 및 금이 함유된 흡착제를 연소시켜 금을 지금(bullion)으로 회수하는 단계를 포함하는, 활성탄을 이용하여 산성 티오요소 수용액 중의 금을 회수하는 방법에 관한 것이다. 본 발명의 금의 회수 방법을 사용하면, 티오요소의 소모가 거의 없어 흡착 단계 후의 산성 티오요소 수용액을 금정광의 침출액으로 재사용할 수 있어 경제적이고, 상기 불순 원소로부터의 금의 분리효율 및 금의 흡착량이 양호하며, 흡착제인 활성탄을 연소함으로써 공해 물질이 배출되지 않는 환경 친화적인 효과를 얻을 수 있다.
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公开(公告)号：KR1020050003079A
公开(公告)日：2005-01-10
申请号：KR1020030043206
申请日：2003-06-30
Applicant: 한국과학기술연구원
IPC: C22B34/30
Abstract: PURPOSE: To provide a method for recovering hexavalent chromium from industrial wastewater, which solves problems of conventional recovery methods, simplifies process by easy extraction and back extraction, is economical due to fast reaction and reuse of extractant after back extraction, increases recovery ratio of hexavalent chromium, and selectively separates and recovers hexavalent chromium from Fe, Zn, Cu and Ni. CONSTITUTION: The method for recovering hexavalent chromium from industrial wastewater comprises first extraction step of extracting hexavalent chromium using an organic solution in which trioctyl methylammonium chloride as an extractant and a third phase preventing agent are dissolved into an organic solvent; and second extraction step of back extracting hexvalent chromium contained in the organic solution using an alkali solution, wherein a phase ratio(A/O) of wastewater to organic solution in the first extraction step is 1 to 3, wherein an addition amount of the extractant is 1 to 3 volume%, wherein an equilibrium pH during extraction in the first extraction step is 2.5 to 5, wherein the third phase preventing agent in the first extraction step is 2 to 5 volume% of decanol, wherein the alkali solution in the second extraction step is caustic soda having concentration of 1 to 2 moles, wherein a phase ratio(A/O) of the alkali solution to the organic solution in the second extraction step is 1/1 to 1/2, and wherein the first and second extraction steps are performed at a temperature of 20 to 30 deg.C for 30 to 60 minutes.
Abstract translation: 目的：提供一种从工业废水中回收六价铬的方法，解决了常规回收方法的问题，通过简单的提取和回萃工艺简化了工艺，由于提取后快速反应和再利用，提高了六价铬的回收率，是经济的 并且从Fe，Zn，Cu和Ni中选择性地分离和回收六价铬。 构成：从工业废水中回收六价铬的方法包括首先提取六价铬的提取步骤，其中使用三辛基甲基氯化铵作为萃取剂和第三相防止剂溶解在有机溶剂中的有机溶液; 以及使用碱溶液反萃取有机溶液中含有的六价铬的第二提取工序，其中，第一提取工序中的废水与有机溶液的相对比（A / O）为1〜3，其中，萃取剂的添加量 为1〜3体积％，其中，所述第一萃取工序中的萃取时的平衡pH为2.5〜5，其中，所述第一萃取工序中的所述第三相防止剂为癸醇的2〜5体积％，其中， 萃取工序是浓度为1〜2摩尔的苛性钠，其中碱溶液与第二萃取工序中的有机溶液的相对比（A / O）为1/1〜1/2，其中，第一和第二 提取步骤在20〜30℃的温度下进行30〜60分钟。
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公开(公告)号：KR1020050001616A
公开(公告)日：2005-01-07
申请号：KR1020030041857
申请日：2003-06-26
Applicant: 한국과학기술연구원
IPC: C10L5/48
CPC classification number: Y02E50/30
Abstract: PURPOSE: To provide a method for effectively manufacturing refuse derived fuel (RDF) at lower cost compared with a conventional method by forming shredder residue from end-of-life vehicles at a low temperature of 200 deg.C or less. CONSTITUTION: The method for manufacturing refuse derived fuel (RDF) using shredder residue from end-of-life vehicles comprises a step of performing first briquetting operation by injecting the plastic and incombustible removed shredder residue into a first briquetting equipment after partially separating plastic from plastic contained shredder residue in advance and removing incombustible from the shredder residue; a step of pulverizing the plastic separated from the shredder residue in advance; and a step of performing second briquetting operation in such a way that the first briquetting product is formed in a sandwich shape between the plastics after injecting some of the pulverized plastic into a lower part of a second briquetting mold having a larger diameter than that of a mold used during the first briquetting operation, charging a first briquetting product onto the pulverized plastic and then injecting rest of the pulverized plastic onto the first briquetting product.
Abstract translation: 目的：提供一种在常规方法下以低于200摄氏度或低于200摄氏度的低温形成废旧车辆的碎纸残渣，以较低的成本有效地制造垃圾衍生燃料（RDF）的方法。 构成：使用废旧车辆的粉碎机残渣制造垃圾衍生燃料（RDF）的方法包括在将塑料与塑料部分分离后，将塑料和不可燃除去的粉碎残渣注入第一压块设备中进行第一次压块操作的步骤 预先包含粉碎机残渣，并从粉碎机残渣中除去不可燃物; 事先粉碎与粉碎机残渣分离的塑料的步骤; 以及进行第二压块操作的步骤，使得第一压块产品在将一些粉碎塑料注入第二压块模具的下部之后在塑料之间形成为夹心形状，该第二压块模具的直径大于 在第一压块操作期间使用的模具，将第一压块产品装入粉碎的塑料上，然后将剩余的粉碎塑料注入到第一压块产品上。
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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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