The Recovery of Rare Earth Concentrate from Spent Cracking Catalyst

被引：2
|
作者：
Borisov, V. A. [1 ,2 ]
Rozhkov, N. N. [1 ]
Ponyatova, S. S. [1 ]
Bogdanova, A. O. [3 ]
Adeeva, L. N. [3 ]
Krugley, A. O. [1 ]
机构：
[1] Omsk State Tech Univ, 11 Mira Pr, Omsk 644050, Russia
[2] Ctr New Chem Technol BIC, 54 Neftezavodskaya Str, Omsk 644040, Russia
[3] Dostoevsky Omsk State Univ, 55-A Mira Pr, Omsk 644077, Russia
来源：
OIL AND GAS ENGINEERING (OGE-2019) | 2019年 / 2141卷
关键词：
SYSTEMS; RE;
D O I：
10.1063/1.5122044
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
One of the wastes from oil refining industry - the spent cracking catalyst (SCC) - contains 1-2 % of rare earth elements (REE), which makes it a promising source for REE recovery. The optimal conditions for the recovery of lanthanum compounds from the fluorinated model mixture of aluminum and lanthanum oxides by leaching with a KOH solution were found: temperature 57 degrees C, concentration of a KOH solution 20 %, and a 1.9-fold excess of KOH with respect to stoichiometry. The concentrate containing 9.1 % La and 1.5 % Ce was recovered under the optimal conditions from the residue after sublimation of fluorinated SCC.
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收藏
页数：7
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