Search International and National Patent Collections
Some content of this application is unavailable at the moment.
If this situation persists, please contact us atFeedback&Contact
1. (WO2010074516) METHOD FOR PREPARING HIGH PURITY ZINC OXIDE USING SECONDARY DUST
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2010/074516 International Application No.: PCT/KR2009/007741
Publication Date: 01.07.2010 International Filing Date: 23.12.2009
IPC:
C01G 9/00 (2006.01) ,C01G 9/02 (2006.01)
C CHEMISTRY; METALLURGY
01
INORGANIC CHEMISTRY
G
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F94
9
Compounds of zinc
C CHEMISTRY; METALLURGY
01
INORGANIC CHEMISTRY
G
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F94
9
Compounds of zinc
02
Oxides; Hydroxides
Applicants:
주식회사 포스코 POSCO [KR/KR]; 경상북도 포항시 남구 괴동동 1번지 1 Koedong-dong, Nam-gu Pohang, Kyungsangbook-do 790-300, KR (AllExceptUS)
재단법인 포항산업과학연구원 RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY [KR/KR]; 경북 포항시 남구 효자동 산 32번지 San 32, Hyoja-Dong, Nam-gu Pohang, Kyungsangbook-do 790-330, KR (AllExceptUS)
이재영 LEE, Jae-Young [KR/KR]; KR (UsOnly)
변태봉 BYEON, Tae-Bong [KR/KR]; KR (UsOnly)
안중철 AHN, Joong-Chul [KR/KR]; KR (UsOnly)
박현 PARK, Hyeon [KR/KR]; KR (UsOnly)
박보하 PARK, Bo-Ha [KR/KR]; KR (UsOnly)
Inventors:
이재영 LEE, Jae-Young; KR
변태봉 BYEON, Tae-Bong; KR
안중철 AHN, Joong-Chul; KR
박현 PARK, Hyeon; KR
박보하 PARK, Bo-Ha; KR
Agent:
특허법인 씨엔에스·로고스 C&S LOGOS PATENT AND LAW OFFICE; 서울특별시 서초구 서초동 1451-34 서초평화빌딩 13층 13th Floor, Seocho-Pyunghwa Building 1451-34 Seocho-dong, Seocho-gu Seoul 137-070, KR
Priority Data:
10-2008-013265523.12.2008KR
Title (EN) METHOD FOR PREPARING HIGH PURITY ZINC OXIDE USING SECONDARY DUST
(FR) PROCÉDÉ DE PRÉPARATION D'OXYDE DE ZINC TRÈS PUR AU MOYEN DE POUSSIÈRE SECONDAIRE
(KO) 이차 더스트를 이용한 고 순도 산화아연의 제조방법
Abstract:
(EN) The present invention relates to a method for preparing high purity zinc oxide used for the electronics and rubber industries, and has as its objective to provide a method for preparing high purity zinc oxide used for electronics and rubber industries by utilizing secondary dust generated in the process of recycling stainless dust. The key point of the method for preparing high purity zinc oxide of the invention is a method wherein secondary dust generated in the process of recycling stainless steel dust is leached with an aqueous solution of hydrogen chloride to selectively dissolve zinc and prepare an aqueous zinc solution, impurities including iron, chrome, fluorine, lead, and cadmium are removed, NaOH is added to dissolve zinc into an aqueous alkaline zinc solution and filtration is performed under conditions of pH 14 15, high purity zinc chloride is added so that the mole ratio of OH: zinc may reach 2.0 3.0 to prepare high purity zinc oxide directly, washing is carried out to remove NaCl, and the sludge of the high purity zinc oxide is filtered and drying is carried out to prepare high purity zinc oxide. According to the invention, the industrial byproduct dust can be turned into a resource for high purity zinc oxide so that it becomes a high-value-added product.
(FR) La présente invention concerne un procédé de préparation d'oxyde de zinc très pur utilisé dans l'industrie de l'électronique et dans l'industrie du caoutchouc. L'objectif de l'invention est d'utiliser, dans le cadre d'un tel procédé, de la poussière secondaire produite au cours du procédé de recyclage de poussière inoxydable. L'élément clé du procédé de préparation d'oxyde de zinc très pur selon la présente invention est la lixiviation de la poussière secondaire produite au cours du procédé de recyclage de poussière d'acier inoxydable avec une solution aqueuse d'acide chlorhydrique afin de dissoudre de manière sélective le zinc et d'obtenir une solution aqueuse de zinc, les impuretés telles que le fer, le chrome, le fluor, le plomb et le cadmium étant retirées, puis du NaOH est ajouté afin de dissoudre le zinc dans une solution aqueuse de zinc alcaline et une filtration est réalisée dans des conditions de pH de 14-15. Du chlorure de zinc très pur est alors ajouté de manière que le rapport molaire de OH:zinc puisse atteindre 2,0-3,0, afin d'obtenir directement de l'oxyde de zinc très pur, un lavage est effectué afin de retirer NaCl, puis la suspension d'oxyde de zinc très pur est filtrée et séchée afin d'obtenir de l'oxyde de zinc très pur. Selon l'invention, la poussière sous-produit industriel peut être transformée en une ressource permettant d'obtenir de l'oxyde de zinc très pur, ce qui en fait alors un produit à forte valeur ajoutée.
(KO) 본 발명은 전자산업 및 고무산업 등에 사용되는 고순도 산화아연을 제조하는 방법에 관한 것으로서, 스텐레스 분진을 재활용하는 공정에서 발생하는 2차 더스트를 활용하여 전자산업과 고무산업에 사용되는 고순도 산화아연을 제조하는 방법을 제공하고자 하는데, 그 목적이 있다. 본 발명은 스텐레스 더스트를 재활용하는 공정에서 발생하는 2차더스트를 염산 수용액으로 침출하여 아연을 선택적으로 용해시켜 아연수용액을 만들고, 철, 크롬, 불소, 납 및 카드늄 등의 불순물을 제거하고, NaOH를 가하여 pH가 14 ~ 15인 조건에서 아연을 알카리 아연 수용액으로 용해시키고 여과한 다음, 고순도 염화아연을 OH 몰수: 아연 몰수의 비가 2.0-3.0이 되도록 가하여 고순도 산화아연을 직접 제조하고, 수세하여 NaCl을 제거한 후, 고순도 산화아연 슬러지를 여과 건조하여 고순도 산화아연을 제조하는 방법을 그 요지로 한다. 본 발명에 의하면, 산업 부산물인 더스트를 고순도 산화아연으로 자원화하여 고부가가치의 제품화로 할 수 있다.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: Korean (KO)
Filing Language: Korean (KO)
Also published as:
JP2012513370CN102325725