公开(公告)号：US09322083B2

公开(公告)日：2016-04-26

申请号：US14419683

申请日：2013-01-17

Applicant: UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING

Inventor： Shengen Zhang ,  Hu Liu ,  Dean Pan ,  Jianjun Tian ,  Min Yang

IPC: C22B59/00 ,  C22B7/00

CPC classification number: C22B59/00 ,  C22B7/005 ,  C22B7/007 ,  Y02P10/234

Abstract: The invention belongs to the field of recycling of resources, in particular to a method for waste rare earth luminescent material by dual hydrochloric acid. First hydrochloric acid was used to dissolve the red phosphor powder (Y2O3:Eu) priority, and yttrium-rich rare earth chloride solution and residue were obtained after filtered. Residue's major components were green and blue phosphor powder, and the removal of Ca2+ in filtrate was conducted by using Na2SO4, and CaSO4 precipitation separation was conducted to get rich rare earth chloride solution, europium and yttrium. Residue was mixed with alkali to perform alkaline fusion at high temperature to decompose green and blue powder, then sodium aluminate, magnesium, barium and rare earth oxides were obtained. Alkaline fusion products were washed with water, and filtered, and then sodium aluminate solution and residues containing rare earth oxides were obtained.

Abstract translation: 本发明属于资源循环利用领域，特别涉及一种双重盐酸废稀土发光材料的制造方法。 使用第一盐酸溶解红色荧光体粉末（Y2O3：Eu），过滤后得到富钇稀土氯化物溶液和残留物。 残渣的主要成分为绿色和蓝色荧光粉，用Na 2 SO 4除去滤液中的Ca2 +，进行CaSO4沉淀分离，得到富稀土氯化物溶液，铕和钇。 残留物与碱混合，在高温下进行碱性熔融分解绿色和蓝色粉末，然后获得铝酸钠，镁，钡和稀土氧化物。 碱性熔融产物用水洗涤，过滤，然后得到铝酸钠溶液和含有稀土氧化物的残余物。

公开(公告)号：US20150225813A1

公开(公告)日：2015-08-13

申请号：US14419683

申请日：2013-01-17

Applicant: UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING

Inventor： Shengen Zhang ,  Hu Liu ,  Dean Pan ,  Jianjun Tian ,  Min Yang

IPC: C22B59/00 ,  C22B7/00

CPC classification number: C22B59/00 ,  C22B7/005 ,  C22B7/007 ,  Y02P10/234

Abstract: The invention belongs to the field of recycling of resources, in particular to a method for waste rare earth luminescent material by dual hydrochloric acid. First hydrochloric acid was used to dissolve the red phosphor powder (Y2O3:Eu) priority, and yttrium-rich rare earth chloride solution and residue were obtained after filtered. Residue's major components were green and blue phosphor powder, and the removal of Ca2+ in filtrate was conducted by using Na2SO4, and CaSO4 precipitation separation was conducted to get rich rare earth chloride solution, europium and yttrium. Residue was mixed with alkali to perform alkaline fusion at high temperature to decompose green and blue powder, then sodium aluminate, magnesium, barium and rare earth oxides were obtained. Alkaline fusion products were washed with water, and filtered, and then sodium aluminate solution and residues containing rare earth oxides were obtained.

Abstract translation: 本发明属于资源循环利用领域，特别涉及一种双重盐酸废稀土发光材料的制造方法。 使用第一盐酸溶解红色荧光体粉末（Y2O3：Eu），过滤后得到富钇稀土氯化物溶液和残留物。 残渣的主要成分为绿色和蓝色荧光粉，用Na 2 SO 4除去滤液中的Ca2 +，进行CaSO4沉淀分离，得到富稀土氯化物溶液，铕和钇。 残留物与碱混合，在高温下进行碱性熔融分解绿色和蓝色粉末，然后获得铝酸钠，镁，钡和稀土氧化物。 碱性熔融产物用水洗涤，过滤，然后得到铝酸钠溶液和含有稀土氧化物的残余物。