Analysis determining method for aluminium oxide in bauxite

• Main Authors: LI ZENGSHENG, LI YANXIANG, LIU XIN, ZHANG YUQIANG, MA MING, LUAN RIJIAN, LI BAOYU, MA LONG, HOU MINGLAN
• Format: Patent
• Language: Chinese; English
• Published: 05.11.2014
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

A provided analysis determining method for aluminium oxide in bauxite employs a potentiometric titration method to determine the content of aluminium oxide in bauxite, and specifically comprises: performing decomposition by melting on pretreated a bauxite sample by using sodium hydroxide, extracting with hot water, acidifying with hydrochloric acid, then using lactic acid to mask titanium, and employing a potentiometric titration instrument to perform titration. The method expands the detection scope, and the detection scope of a national standard method is 40%-80%. The potentiometric titration method has the detection scope of 10%-80%, and the detection scope is substantially expanded. Also the method improves accuracy and precision of a detection result.