Process for extracting cerium by oxydol oxidation method


Application Number: 00108521
Application Date: 2000.04.30
Publication Number: 1275627
Publication Date: 2000.12.06
Priority Information:
International: C22B3/10
Applicant(s) Name: Neimonggu Baogang High Sciences and Tech. Co., Ltd.
Address:
Inventor(s) Name: Bai Wenping;Cao Shengbiao
Patent Agency Code: 15101
Patent Agent: su aihua
Abstract A cerium-extracting process by using oxidation with hydrogen peroxide is characterized by that it uses hydrogen peroxide as oxidant to extract cerium from low-neodymium rare earth chloride solution, and its obtained products are 95% cerium oxide and lanthanum-rich rare earth oxide, and its technological path includes the following steps: preparing raw material solution, oxidation and dissolving, solid-liquid separation, acid-pickling and purifying solid portion, neutralizing and water-washing, filtering and ignition to obtain cerium oxide, and making its solution portion undergo the process of carbon-amine precipitation, filtering and ignition to obtain lanthanum-rich rare earth oxide. Said cerium oxide product is mainly used as clarifier, decolourant and additive in glass industry.