Measurement method for zirconium oxide in drainage sand

• Main Authors: QI ZHENGRONG, PAN JIZHEN, WU CHAOYING, QI XUCHENG, YAO CHANGFA, LAN ENYOU, JIA XIUMEI, QIAO HONGMEI, YUN MEI, LU JIANMIN
• Format: Patent
• Language: Chinese; English
• Published: 18.10.2019
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention provides a measurement method for zirconium oxide in drainage sand. The measurement method is characterized by comprising the following steps of preparing a reagent, preparing a test sample in a molten state, performing titration, and calculating zirconium oxide content. The measurement method for the zirconium oxide in the drainage sand has the beneficial effects that flux by whichthe zirconium oxide sample can be completely dissolved is used, accuracy detection data of the measurement method shows that the experiment recycling rate is 99-102%, and precision detection data shows that the RSD of the method is 0.68% and is remarkably higher than that of normal standard of which the RSD is 3%. By the method, the problem that the sample is difficult to dissolve during the measurement process of the zirconium oxide in the drainage sand is solved, so that the accuracy and the precision of a zirconium oxide element in the drainage sand measured by an EDTA complexometric titration method are remarkably