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.

引用

页数：7

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