Pressure Leaching of Chalcopyrite Concentrate: Iron Removal from Leaching Residues

2020 ◽  
Vol 299 ◽  
pp. 1052-1057
Author(s):  
Aleksei Kritskii ◽  
Kirill Karimov ◽  
Stanislav Naboichenko
Keyword(s):  
Sulfuric Acid ◽  
High Temperature ◽  
Materials Processing ◽  
Pressure Leaching ◽  
Acid Media ◽  
Autoclave Treatment ◽  
Oxidative Leaching ◽  
Chalcopyrite Concentrate ◽  
Leaching Residue ◽  
By Products

Autoclave oxidative leaching is one of the most promising hydrometallurgical approaches for copper suplhide materials processing. In previous studies [2–4], the possibility of an efficient autoclave treatment of chalcopyrite concentrate was confirmed. The concentrate has the following chemical composition, %: 21.5 Cu, 0.1 Zn, 26.5 S, 24.5 Fe, 0.05 Pb, 0.04 Ni, 16.2 SiO2 [1]. At high temperature conditions (190–200 °C; 4–6 bar) in sulfuric-acid media during 100–120 min about 98% Cu was extracted. A leaching residue after POX (POX-cake) contained the following compounds, %: 55 Fe2O3, 40 SiO2, 4 MeS2/MeS. Current paper presents the results on purification of POX-cakes from iron by autoclave treatment. Futher ways for by-products (SiO2-cake and FeSO4-solution) processing are sugested.

The effect of carbon black on the oxidative leaching of enargite by manganese(IV) dioxide in sulfuric acid media

2017 ◽  
Vol 171 ◽  
pp. 165-171
Author(s):  
Hiroshi Nakazawa ◽  
Shin Koshiya ◽  
Hideki Kobayashi ◽  
Takashi Matsuhashi
Keyword(s):  
Sulfuric Acid ◽  
Carbon Black ◽  
Acid Media ◽  
Oxidative Leaching

Pressure oxidative leaching of copper cake from nickel refining plant in sulfuric acid media

2020 ◽  
pp. 19-24
Author(s):  
A. V. Kritskii ◽  
◽  
S. Jafari ◽  
P. Sinisalo ◽  
M. Lundström ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Acid Media ◽  
Refining Plant ◽  
Oxidative Leaching

Pressure leaching of copper-nickel converter matte in sulfuric acid media

2018 ◽  
pp. 24-28 ◽  
Author(s):  
L. G. Elfimova ◽  
◽  
K. A. Karimov ◽  
A. V. Kritskiy ◽  
S. S. Naboychenko ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Pressure Leaching ◽  
Acid Media ◽  
Copper Nickel ◽  
Converter Matte ◽  
Nickel Converter

High-Temperature Sulfuric Acid Converter Matte Pressure Leaching

Metallurgist ◽  
2015 ◽  
Vol 59 (7-8) ◽  
pp. 723-726 ◽  
Author(s):  
K. A. Karimov ◽  
A. V. Kritskii ◽  
L. G. Elfimova ◽  
S. S. Naboichenko
Keyword(s):  
Sulfuric Acid ◽  
High Temperature ◽  
Pressure Leaching ◽  
Converter Matte

Pressure Leaching of Chalcopyrite Concentrate: Ultra-Fine Milling as Process Acceleration Method

2020 ◽  
Vol 299 ◽  
pp. 1109-1114
Author(s):  
Aleksei Kritskii ◽  
Kirill Karimov ◽  
Stanislav Naboichenko
Keyword(s):  
Particle Size ◽  
Size Class ◽  
Pressure Leaching ◽  
Porphyry Deposits ◽  
Acceleration Method ◽  
Oxidative Leaching ◽  
Chalcopyrite Concentrate ◽  
Significant Intensification ◽  
Fine Milling ◽  
Partial Oxygen

Ural enrichment plants processing copper-porphyry deposits are produced chalcopyrite concentrates of the following chemical composition, %: 21.5 Cu, 0.1 Zn, 26.59 S, 24.52 Fe, 0.05 Pb, 0.04 Ni, 16.28 SiO2 [1]. According to previous studies [2, 3, 21], such concentrates can be effectively treated using pressure oxidative leaching (POX). At temperature of 190–200 °C, partial oxygen pressure 4–6 bar and [H2SO4] = 15–30 g / L during 100-120 min about 98 % Cu was extracted. In this paper, an inluence of chalcopyrite concentrate preliminary grinding on efficiency of the POX stage was studied. It was found that even the finest grinding of the particle size class P80 = 13 μm does not lead to significant intensification of process kinetics.

REVERE No. 430

Alloy Digest ◽  
1958 ◽  
Vol 7 (5) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Sulfuric Acid ◽  
High Temperature ◽  
Physical Properties ◽  
High Resistance ◽  
High Strength ◽  
Heat Treating ◽  
Aluminum Bronze ◽  
Temperature Performance ◽  
Excellent Corrosion Resistance

Abstract REVERE No. 430 is an aluminum bronze having high strength, excellent corrosion resistance, and high resistance to sulfuric acid. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on low and high temperature performance, and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Cu-63. Producer or source: Revere Copper and Brass Inc..

TIMETAL 35A

Alloy Digest ◽  
2001 ◽  
Vol 50 (11) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Sulfuric Acid ◽  
High Temperature ◽  
Nitric Acid ◽  
Physical Properties ◽  
Chlorine Dioxide ◽  
Heat Treating ◽  
Bend Strength ◽  
Temperature Performance ◽  
Sodium And Potassium

Abstract Titanium shows outstanding resistance to seawater and marine atmospheres. It is also resistant to attack by hot metallic chloride solutions, sodium and potassium hypochlorite, and chlorine dioxide. The metal is resistant to attack by hot nitric acid at concentrations up to 80% and is not attacked by sulfuric acid. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and bend strength as well as fatigue. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: TI-122. Producer or source: Timet.

Properties of CMV cation exchange membranes in sulfuric acid media

2006 ◽  
Vol 284 (1-2) ◽  
pp. 67-78 ◽  
Author(s):  
Le Xuan Tuan ◽  
M. Verbanck ◽  
C. Buess-Herman ◽  
H.D. Hurwitz
Keyword(s):  
Sulfuric Acid ◽  
Cation Exchange ◽  
Acid Media
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