一种离子型稀土矿的绿色开采方法

• Format: Patent
• Language: Chinese
• Published: 31.05.2024
• Subjects: CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; METALLURGY; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

本申请提供一种离子型稀土矿的绿色开采方法，涉及离子型稀土矿开采技术领域。该方法包括：将浸矿液注入浸矿场进行原地浸矿，得到浸出母液；将淋洗水注入浸矿后的浸矿场进行淋洗，得到淋洗尾液；将浸出母液和淋洗尾液混合得到母液，再进行除铝处理得到除铝后液和铝富集物，将除铝后液进行沉淀处理得到沉淀后液和稀土产品；将沉淀后液进行除钙处理得到除钙后液和钙富集物，将除钙后液调酸、膜浓缩处理，得到浓缩液和淡水，其中浓缩液作为浸矿液使用，淡水作为淋洗水使用；将铝富集物和所述钙富集物分别溶解后，与矿化剂交替注入浸矿场进行封场。本申请提高了开采的稀土产品质量，回收了淋洗尾液中的稀土和浸矿剂，降低了水土环境污染风险。 The invention provides a green mining method for ionic rare earth ore, and relates to the technical field of ionic rare earth ore mining. The method comprises the following steps: injecting an ore leaching solution into an ore leaching field for in-situ ore leaching to obtain a leaching mother solution; the leaching water is injected into the ore leaching field after ore leaching for leaching, and leaching tail liquid is obtained; mixing the leaching mother liquor and the leaching tail liquor to obtain mother liquor, then carrying out aluminum removal treatment to obtain aluminum-removed liquor and an aluminum enrichment, and carrying out precipitation treatment on the aluminum-removed liquor to obtain precipitated li