有色金属科学与工程Issue(2)：96-99,4.
从抛光废料中回收稀土的研究
Research on recovering rare earth from polishing waste
周洁英 1陈冬英 1欧阳红 1伍莺1
作者信息
- 1. 赣州有色冶金研究所，江西 赣州 341000
- 折叠
摘要
Abstract
This thesis mainly discusses how to recover rare earth from polishing waste and ensure the recovery rate of rare earth above 80 %. It puts forward a method to recover rare earth based on analyzing the existing polishing waste composition. The experiment includes two parts, the influences on the recovery rate of rare earth were respectively considered including the raw material pretreatment, acid type, acid concentration, leaching temperature, leaching time and supplement. The optimal leaching experimental conditions are as follows: add supplement B, use 8 mol/L Hydrochloric acid direct leach, the leaching temperature is 92 ℃ and the leaching time is two hours. After impurity removal, extraction, precipitation and calcination, the recovery rate of rare earth is as high as 85.94 %. Then according to the determined conditions for the comprehensive enlarge tests, the results show that the recovery rate can be stabilized above 81 %. According to preliminary estimate, the profit of dealing with a ton of the showed polishing waste is about 2000 RMB.关键词
抛光废料/稀土回收率/酸浸Key words
polishing waste/recovery rate of rare earth/acid leaching分类
矿业与冶金引用本文复制引用
周洁英,陈冬英,欧阳红,伍莺..从抛光废料中回收稀土的研究[J].有色金属科学与工程,2013,(2):96-99,4.
