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    • 11. 发明公开
    • 산성치오요소법에 의한 금정광으로부터의 금 회수방법
    • 通过酸性方法从金浓缩中回收金的方法
    • KR1020040032299A
    • 2004-04-17
    • KR1020020061374
    • 2002-10-09
    • 한국과학기술연구원
    • 김성규오종기이화영
    • C22B3/08
    • Y02P10/234
    • 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.
    • 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。
    • 18. 发明公开
    • 트리옥틸 메틸암모늄 클로라이드를 사용한 산업폐수 중6가 크롬의 회수 방법
    • 通过使用三氯甲基氯化铵的溶剂萃取从含有各种重金属的工业废水中回收六价铬的方法
    • KR1020050003079A
    • 2005-01-10
    • KR1020030043206
    • 2003-06-30
    • 한국과학기술연구원
    • 김성규이화영오종기
    • C22B34/30
    • 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.
    • 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。
    • 19. 发明公开
    • 폐자동차 파쇄 잔류물을 사용한 고체연료의 제조 방법
    • 通过使用预分离塑料制造终生催化燃料(RDF)的方法,使用生命周期终止车辆
    • KR1020050001616A
    • 2005-01-07
    • KR1020030041857
    • 2003-06-26
    • 한국과학기술연구원
    • 오종기이화영김성규
    • C10L5/48
    • Y02E50/30
    • 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.
    • 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。
    • 20. 发明公开
    • 아연 제련 잔사로부터 고순도 갈륨의 회수 방법
    • 通过使用湿式处理从锌盐回收高纯度淀粉的方法
    • KR1020040096668A
    • 2004-11-17
    • KR1020030029555
    • 2003-05-10
    • 한국과학기술연구원
    • 이화영김성규오종기
    • C22B58/00
    • Y02P10/214Y02P10/234
    • 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.
    • 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。