Premium
Determination of the Optimum Conditions for Leaching of Malachite Ore in H 2 SO 4 Solutions
Author(s) -
Ata O. N.,
Çolak S.,
Ekinci Z.,
Çopur M.
Publication year - 2001
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/1521-4125(200104)24:4<409::aid-ceat409>3.0.co;2-0
Subject(s) - malachite , dissolution , taguchi methods , leaching (pedology) , particle size , malachite green , chemistry , metallurgy , nuclear chemistry , materials science , copper , composite material , organic chemistry , environmental science , adsorption , soil science , soil water
The Taguchi method has been used to determine the optimum conditions for the dissolution of malachite ore in H 2 SO 4 solutions. The chosen experimental parameters and their range were (i) reaction temperature: 15 to 45 °C, (ii) solid‐to‐liquid ratio: 1/10 to 1/3 g cm –3 , (iii) acid concentration (in weight): 2 % to 10 %, (iv) particle size: –40 to –3.5 mesh, (v) stirring speed: 240 to 720 rpm, and (vi) reaction time: 5 to 45 minutes. The optimum conditions were found to be reaction temperature: 40 °C, solid‐to‐liquid ratio: 1/3 g cm –3 , acid concentration (in weight): 10 %, particle size: –30 mesh, stirring speed: 480 rpm, and reaction time: 45 minutes. Under these optimum working conditions, the dissolution of copper and iron in malachite ore was 100 % and 58 %, respectively. Besides, alternative working conditions reducing the total cost and dissolution of iron were found.