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    • 21. 发明公开
    • 철분말을 사용한 산성 티오요소 수용액으로부터 금, 은의회수방법
    • 使用铁粉从酸性水溶液中回收金和银的方法
    • KR1020030070331A
    • 2003-08-30
    • KR1020020009828
    • 2002-02-25
    • 한국과학기술연구원
    • 김성규오종기이화영
    • C22B11/00
    • 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.
    • 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。
    • 27. 发明授权
    • 폐자동차 파쇄 잔류물을 사용한 고체연료의 제조 방법
    • 使用废旧车辆的破碎机残渣制造垃圾衍生燃料RDF
    • KR100512228B1
    • 2005-09-05
    • KR1020030041857
    • 2003-06-26
    • 한국과학기술연구원
    • 오종기이화영김성규
    • C10L5/48
    • Y02E50/30
    • 본 발명은 폐자동차 파쇄잔류물을 원료로 활용하여 이로부터 고체연료를 제조하는 방법에 관한 것이다. 본 발명의 방법은 파쇄잔류물에 함유된 플라스틱 일부를 미리 선별하고 불연성 물질을 제거한 다음 1차 브리켓팅 장치에 투입하여 1차 브리켓팅을 실시하고, 분쇄한 일부의 플라스틱을 1차 브리켓팅시 사용한 몰드보다 직경이 더 큰 2차 브리켓팅 몰드의 하부에 투입하고 1차 브리켓팅 산물을 장입한 다음 다시 상부에 나머지 플라스틱을 투입하여 1차 브리켓팅 산물이 플라스틱 사이에 샌드위치 모양이 되도록 2차 브리켓팅을 실시하는 것을 특징으로 한다. 본 발명에 따라 폐자동차 파쇄잔류물을 원료로 사용하여 고체연료를 제조하는 경우 종래의 방법에 비해 저온 성형이 가능하기 때문에 200℃ 이하의 온도에서도 고체연료를 생산할 수 있고, 파쇄잔류물을 초기 부피의 1/20 ~ 1/30까지 압축이 가능하며, 최종 제품의 기계적 강도가 종래 방법에 비해 월등히 우수하다는 특징이 있다. 특히, 본 발명의 방법은 종래의 폐기물 압축성형기에서 발생할 수 있는 투입원료의 연소 및 화재문제를 근원적으로 차단할 수 있는 수단을 제공하고 있다.
    • 28. 发明授权
    • 흡착법을 이용한 도금 폐수로부터 6가 크롬의 분리 방법
    • 을이용한도금폐수로부터6가크롬의분리방흡착법
    • KR100466372B1
    • 2005-01-13
    • KR1020030021840
    • 2003-04-08
    • 한국과학기술연구원
    • 김성규오종기이화영
    • C02F1/58C02F1/28
    • PURPOSE: A method is provided to separate hexavalent chromium from electroplating wastewater containing heavy metals including iron, zinc, copper, nickel and chromium by adsorption method using strong base anion exchange resin as an adsorbent is provided. CONSTITUTION: The method comprises a step of adsorbing hexavalent chromium by adding SA10AP resin that is strong base anion exchange resin as an adsorbent to the electroplating wastewater; and a step of desorbing hexavalent chromium adsorbed onto the resin by adding sodium hydroxide and sodium chloride to the hexavalent chromium adsorbed resin, wherein 15 g/L to 25 g/L of the adsorbent is added to the strong base anion exchange resin, wherein the sodium hydroxide has concentration of 1 to 3 moles, wherein a weight ratio (NaCl/NaOH) of sodium chloride to sodium hydroxide is 6 to 8, wherein the adsorption step and the desorption step are respectively performed at temperature of 20 to 30 deg.C, wherein the adsorption step and the desorption step are respectively performed at stirring rate of 100 to 300 rpm, and wherein the adsorption step and the desorption step are respectively performed for 50 to 70 minutes.
    • 目的:提供一种用强碱性阴离子交换树脂作为吸附剂通过吸附法从含有铁,锌,铜,镍和铬等重金属的电镀废水中分离出六价铬的方法。 构成:该方法包括通过添加作为强碱性阴离子交换树脂的SA10AP树脂作为电镀废水的吸附剂来吸附六价铬的步骤; 以及通过将氢氧化钠和氯化钠添加到所述六价铬吸附树脂上来解吸吸附到所述树脂上的六价铬的步骤,其中向所述强碱阴离子交换树脂添加15g / L到25g / L的所述吸附剂, 氢氧化钠的浓度为1至3摩尔,其中氯化钠与氢氧化钠的重量比(NaCl / NaOH)为6至8,其中吸附步骤和解吸步骤分别在20至30℃ 其中吸附步骤和解吸步骤分别在100-300rpm的搅拌速度下进行,并且其中吸附步骤和解吸步骤分别进行50-70分钟。
    • 29. 发明公开
    • 도금 폐수로부터 용매 추출법을 이용한 중금속의 회수 방법
    • 通过溶剂萃取从电镀废水中回收重金属的方法
    • KR1020040058505A
    • 2004-07-05
    • KR1020020084736
    • 2002-12-27
    • 한국과학기술연구원
    • 김성규오종기이화영
    • C02F1/26
    • 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.
    • 目的:提供通过使用2-乙基己基2-乙基己基磷酸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的溶剂萃取方法。 构成:在通过溶剂萃取从电镀废水中回收重金属(包括铁,锌,铜和镍)的方法中,所述方法包括首先从电镀废水中提取铁和锌的铁和锌的提取步骤,所述方法是使用由 将非皂化状态的2-乙基己基2-乙基己基磷酸酯与有机溶剂一起与第三相防止剂一起混合; 以及第二提取步骤,通过从在第一提取步骤中提取铁和锌的电镀废水中提取铜和镍来回收铜和镍,所述第二提取步骤使用通过将皂化状态的萃取剂与有机溶剂混合制备的有机溶液与第三相 预防剂。
    • 30. 发明公开
    • 정전 분리법을 이용한 폐자동차 파쇄 잔류물로부터 염소성분의 분리 방법
    • 使用静电分离从废物汽车残留物分离氯的方法
    • KR1020040018765A
    • 2004-03-04
    • KR1020020050736
    • 2002-08-27
    • 한국과학기술연구원
    • 오종기이화영
    • C10G32/02
    • PURPOSE: A method for effectively separating chlorine from waste car shredded residues remained by recovering metals including iron scrap, aluminum and copper from the shredded waste car using electrostatic separation after shredding waste car using a shredder is provided. CONSTITUTION: The method for separating chlorine from waste car shredded residues using electrostatic separation comprises the steps of obtaining a product filtered by the sieve by classifying grain sizes of the waste car shredded residues using a sieve having size of about 5 to 10 mm; obtaining a combustible product of high heat energy by air separating the product obtained through grain size classification; obtaining pulverized material of the combustible product by pulverizing the combustible product into particles having diameter of 3 mm or less; and obtaining a combustible product of high heat energy by electrostatic separating the pulverized material of the combustible product, wherein the air separation step comprises a step of primarily removing materials which are combustible, but have low heat energy such as sponge, paper and wood pieces and secondarily removing non-combustible materials such as glass and metal scraps, and weight of the combustible product of high heat energy obtained through air separation is 60 to 80% of that of a product filtered by the sieve by performing grain size classification before performing the air separation step.
    • 目的:提供了一种通过使用粉碎机切碎废弃车辆后,通过使用静电分离从粉碎的废车中回收金属,包括废铁,铝和铜的金属,从而有效分离废汽车碎屑残留物的方法。 构成:使用静电分离方法从废汽车切碎残渣中分离氯的方法包括以下步骤:通过使用尺寸为约5至10mm的筛子对废汽车切碎残渣的颗粒尺寸进行分级,获得筛子过滤的产物; 通过空气分离通过粒度分级获得的产品获得高热能的可燃产物; 通过将可燃物粉碎成直径为3mm以下的粒子,得到可燃物的粉碎物; 并通过静电分离可燃产品的粉碎材料获得高热能的可燃产品,其中空气分离步骤包括主要除去可燃烧但具有低热能的材料如海绵,纸和木材的步骤,以及 二次除去玻璃和金属屑等不燃材料,通过空气分离获得的高热能的可燃性产品的重量,是在进行空气之前进行粒度分级的筛子过滤产物的重量的60〜80% 分离步骤