Ultrasound-Assisted Leaching and Kinetic Study of Blended Copper Slag

被引：29

作者：

Turan, M. Deniz ^{[1
]}

Sari, Z. Abidin ^{[2
]}

Demiraslan, Aslihan ^{[1
]}

机构：

[1] Firat Univ, Dept Met & Mat Engn, TR-23119 Elazig, Turkey

[2] Iskenderun Tech Univ, Dept Met, Dortyol Vocat Sch Higher Educ, TR-31200 Antakya, Turkey

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE | 2019年 / 50卷 / 04期

关键词：

HYDROGEN-PEROXIDE; CONVERTER SLAG; SULFURIC-ACID; CONCENTRATE; EXTRACTION; METALS;

D O I：

10.1007/s11663-019-01597-x

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This article deals with the dissolution of blended copper slag (flash and converter furnace) in hydrogen peroxide and acetic acid in the presence of ultrasound. The parameters that are effective on leaching efficiency, such as leaching temperature, leaching time, ultrasound power, acetic acid concentration, and hydrogen peroxide concentration, were investigated. The optimum leaching conditions for maximum copper dissolution (93 pct) and minimum iron dissolution (3 pct) were determined as follows: 2 M H2O2, 4 M CH3COOH, 10 pct of ultrasound power, 65 degrees C of leaching temperature, 60 minutes of leaching time, and 1:25 of solid-liquid ratio. According to the Brunauer-Emmett-Teller (BET) analysis results on the original sample and leaching residue, the ultrasound caused formation of microcracks on the particle surface; however, the BET surface area increased and the mean adsorption pore width decreased. The apparent activation energy was found to be 55.35 kJ/mol, and the kinetics equations of the processes were established.

引用

页码：1949 / 1956

页数：8

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