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
Metallurgist ◽  
2017 ◽  
Vol 61 (3-4) ◽  
pp. 238-242 ◽  
Author(s):  
K. A. Karimov ◽  
A. V. Kritskii ◽  
L. G. Elfimova ◽  
S. S. Naboichenko

2018 ◽  
pp. 24-28 ◽  
Author(s):  
L. G. Elfimova ◽  
◽  
K. A. Karimov ◽  
A. V. Kritskiy ◽  
S. S. Naboychenko ◽  
...  

2020 ◽  
Vol 299 ◽  
pp. 1052-1057
Author(s):  
Aleksei Kritskii ◽  
Kirill Karimov ◽  
Stanislav Naboichenko

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.


Alloy Digest ◽  
1958 ◽  
Vol 7 (5) ◽  

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..


Alloy Digest ◽  
2001 ◽  
Vol 50 (11) ◽  

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.


1980 ◽  
Vol 58 (14) ◽  
pp. 1418-1426 ◽  
Author(s):  
Thomas Wilson Swaddle ◽  
Leonard Fabes

Evidence is presented to indicate that aqueous Co2+ exists as the hexaaquo-ion in equilibrium with minor amounts (upper limits 0.08% at 298 K, 7% at 625 K, at 16–25 MPa) of tetraaquocobalt(II), with ΔH ~ +17 kJ mol−1. The single visible absorption band of the supposed Co(H2O)42+ has maxima at 552 nm and 486 nm in the intensity ratio 2:1. Hydrogen sulfate ion (up to 0.5 M at least) does not complex Co2+(aq) detectably in acidic media, 290–625 K, and sulfuric acid therefore holds promise as a non-complexing strong monobasic acid for high-temperature aqueous studies. In water containing 2.0 M or more Cl−, the tetrahedral form of cobalt(II) is CoCl42−, ΔH for the octahedral → tetrahedral equilibrium being +62 kJ mol−1; forCoBr42−, the corresponding ΔH is +70 kJ mol−1, the greater endothermicity accounting entirely for the lower stability relative to CoCl42−.


2010 ◽  
Vol 36 (4) ◽  
pp. 413-419 ◽  
Author(s):  
Jin Iwatsuki ◽  
Nobuyuki Tanaka ◽  
Yutaka Watanabe ◽  
Atsuhiko Terada ◽  
Kaoru Onuki

2014 ◽  
Vol 150 ◽  
pp. 92-98 ◽  
Author(s):  
Linie Jia ◽  
Bin Liang ◽  
Li Lü ◽  
Shaojun Yuan ◽  
Lijuan Zheng ◽  
...  

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