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1. (WO2018040998) METHOD FOR PREPARING NEW ULTRA-PURE SPHERICAL ALUMINA POWDER
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.:    WO/2018/040998    International Application No.:    PCT/CN2017/098760
Publication Date: 08.03.2018 International Filing Date: 24.08.2017
IPC:
C01F 7/30 (2006.01), C01F 7/58 (2006.01), C01F 7/62 (2006.01)
Applicants: SICHUAN XINGZHI ZHIHUI INTELLECTUAL PROPERTY OPERATION CO., LTD. [CN/CN]; HE, Xiaomao B-1002, CATIC International Plaza 88th Jiaozi Avenue, High-Tech Zone Chengdu, Sichuan 610041 (CN).
HE, Shunai [CN/CN]; (CN)
Inventors: HE, Shunai; (CN).
YAO, Jianqiang; (CN).
ZHU, Xiaoyan; (CN)
Agent: CHENGDU XINGZHI PATENT AGENCY (ORDINARY PARTNERSHIP); HE, Xiaomao B-1002, CATIC International Plaza 88th Jiaozi Avenue, High-Tech Zone Chengdu, Sichuan 610041 (CN)
Priority Data:
201610758054.3 29.08.2016 CN
Title (EN) METHOD FOR PREPARING NEW ULTRA-PURE SPHERICAL ALUMINA POWDER
(FR) PROCÉDÉ DE PRÉPARATION D'UNE NOUVELLE POUDRE D'ALUMINE SPHÉRIQUE ULTRA PURE
(ZH) 一种新型超纯球形氧化铝粉体制备方法
Abstract: front page image
(EN)Disclosed is a method for preparing an ultra-pure spherical alumina powder, wherein gas-phase aluminum chloride is pneumatically conveyed and sprayed into a heating zone of greater than or equal to 2500°C, then the ultra-pure aluminum chloride is pyrolyzed to produce alumina, thereby obtaining an ultra-pure spherical alumina powder. A product obtained by the method has advantages such as a high sphericity, a high bulk density and a high purity.
(FR)L'invention concerne un procédé de préparation d'une poudre d'alumine sphérique ultra pure, dans lequel le chlorure d'aluminium en phase gazeuse est transporté de manière pneumatique et pulvérisé dans une zone de chauffage supérieure ou égale à 2500 °C, puis le chlorure d'aluminium ultra pur est pyrolysé pour produire de l'alumine, ce qui permet d'obtenir une poudre d'alumine sphérique ultra pure. Un produit obtenu par ce procédé présente des avantages tels qu'une sphéricité élevée, une densité apparente élevée et une pureté élevée.
(ZH)一种超纯球形氧化铝粉体制备方法,将气相氯化铝通过气力输送并喷入大于等于2500℃的加热区域中,热解超纯氯化铝生成氧化铝,获得超纯球形氧化铝粉体。该方法获得的产品具有球形度高,堆积密度高,纯度高等优势。
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, 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, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG).
Publication Language: Chinese (ZH)
Filing Language: Chinese (ZH)