Green extraction method for ionic rare earth ore calcium salt

• Main Authors: NIU FEI, HE XIAO, LI ZAOFA, CAI ZHIHUA, XU RUIGAO, LI XINGLAN, HE HUAJIN, ZOU GUITIAN, YE XINYU, LI CHUN, LAN QIAOFA, XU XING, ZHONG HUAYUN, LIU CONG, ZHUANG XUETAO, YANG YOUMING
• Format: Patent
• Language: Chinese; English
• Published: 26.02.2021
• Subjects: CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; METALLURGY; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention discloses a green extraction method for ionic rare earth ore calcium salt. The green extraction method for the ionic rare earth ore calcium salt comprises the following steps that a composite salt ore leaching agent is prepared by taking an ore soil main substance calcium salt as an ore leaching agent and adding a small amount of aluminum, iron and ammonium, the pH value in the ore leaching process is adjusted by utilizing the acidity of hydrolysis of strong acid and weak base salts of aluminum, iron and ammonium, therefore, leaching of rare earth is promoted, and high-efficiencyand green extraction of the ionic rare earth is realized. 本发明公开了一种离子型稀土矿钙盐绿色提取方法，以矿土主要物质钙盐为浸矿剂，添加少量铝、铁、铵根组成的复合盐浸矿剂，利用铝、铁、铵根强酸弱碱盐的水解呈酸性调节浸矿过程的pH值，从而促进稀土的浸出，实现离子型稀土的高效、绿色提取。