Extraction of Rhenium and Osmium from Lead Technogenic Raw Materials of Copper Production

被引：5
作者：
Feruza, Berdikulova [1 ]
Abdurassul, Zharmenov [1 ]
Alma, Terlikbaeva [1 ]
Alimgazy, Sydykov [1 ]
Akmaral, Serikbayeva [1 ]
机构：
[1] RSE Natl Ctr Complex Proc Mineral Raw Mat Republ, Alma Ata 050036, Kazakhstan
来源：
MATERIALS | 2022年 / 15卷 / 12期
关键词：
rhenium; osmium; lead sludge; metal recovery; black lead; rhenium-containing slag; TECHNOLOGIES; RECOVERY; SULFIDE;
D O I：
10.3390/ma15124071
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Lead sludge from copper production is a source of rare metals, such as rhenium and osmium, whose content reaches 0.06-0.08% and 0.0025-0.0050%, respectively. The base of the sludge consists of lead sulfate. A method of reductive smelting of lead sludge from copper smelting production at 1000-1100 degrees C has been developed. Coke was used as a reducing agent and sodium sulfate as a slag-forming material. Optimal conditions for selective extraction of rare metals in smelting products were found: osmium in the form of metallic form into raw lead and rhenium in the form of perrhenate compound Na5ReO6 into sodium-sulfate slag. The developed technology makes it possible to extract rhenium with a high degree of extraction in the form of water-soluble compounds for the subsequent production of commercial salts of rhenium by the known hydrometallurgical methods. The content of rhenium in the slag phase is 0.18-0.25%, with its initial content in the slime of 0.06-0.08%. The degree of rhenium concentration at the first stage of processing is 3-3.2 times in the form of water-soluble perrhenate. Osmium and lead do not form solid solutions; osmium in crude lead is mainly concentrated in the lower zones of lead. A method of obtaining a concentrate containing 53-67% osmium from raw lead with an initial content of 0.0025-0.0050% in the slurry and a concentration number of 13,000-21,000 times has been proposed.
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页数：13
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