公开(公告)号：US20160376682A1

公开(公告)日：2016-12-29

申请号：US15125114

申请日：2015-02-27

Applicant: KOREA INSTITUTE OF GEOSCIENCE AND MINERAL RESOURCE

Inventor： Jin-Young LEE ,  Rajesh KUMAR

IPC: C22B34/36 ,  C22B7/00 ,  C22B34/22

CPC classification number: C22B34/365 ,  C22B3/12 ,  C22B3/44 ,  C22B7/009 ,  C22B34/225 ,  Y02P10/23 ,  Y02P10/234

Abstract: The present invention relates to a method for recovering vanadium and tungsten from a leach solution of a waste denitrification catalyst, and more specifically, to a method for recovering vanadium and tungsten from a leach solution of a waste denitrification catalyst comprising the steps of: recovering vanadium by adding acid and then adding a calcium compound to a leach solution of a waste denitrification catalyst to precipitate the vanadium; and recovering tungsten by adding acid and then adding a calcium compound to the remaining leach solution after recovering the vanadium to precipitate the tungsten.

Abstract translation: 本发明涉及从废反硝化催化剂的浸出溶液中回收钒和钨的方法，更具体地说，涉及一种从废反硝化催化剂的浸出溶液中回收钒和钨的方法，包括以下步骤：回收钒 通过加入酸，然后将钙化合物加入到废反硝化催化剂的浸出溶液中以使钒沉淀; 并通过加入酸回收钨，然后在回收钒之后向剩余的浸出溶液中加入钙化合物以沉淀钨。