Results 231 to 240 of about 15,224 (271)

Carcinogenic effects of antimony trioxide and antimony ore concentrate in rats

Journal of Toxicology and Environmental Health, 1986
This study was initiated because of a suspected increase in incidence of lung cancer in antimony smelter workers in England. Three groups of 8-mo-old Wistar-derived rats (90 males and 90 females per group) were exposed by inhalation to either Sb2O3 [time-weighted average (TWA) 45 mg/m3], Sb ore concentrate (TWA 36 + 40 mg/m3), or filtered air (controls)
D H, Groth, L E, Stettler, J R, Burg, W M, Busey, G C, Grant, L, Wong   +5 more
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Biotechnology of Concentrate and Antimony Ore Processing

Journal of Mining Science, 2001
The results are presented for using microorganisms for mercury and antimony separation and extraction of oxidized antimony minerals. The problems on technology of direct processing of gold-antimony concentrates by pentachlorous antimony chlorides are considered.
P. M. Solozhenkin, N. N. Lyalikova-Medvedeva   +1 more
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Processing of Gold Bearing Antimony Ore

Mineral Processing and Extractive Metallurgy Review, 1995
A wet chemical process was developed for the separation of gold from gold-bearing antimony sulphide ores. The ore sample was taken from the mine Urquidi from Oruro in Bolivia. It contained roughly 33% Sb in the form of antimonite. 24% Si in the form of quartz, small quantities of Pb, Fe, Cu, and Ni as well as 63 g/t gold, 60% of it as visible gold. The
E. GOCK, J. F. CORDOVA EQUIVAR
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Oxidation of gold-antimony ores by a thermoacidophilic microbial consortium

Microbiology, 2013
Antimony leaching from sulfide ore samples by an experimental consortium of thermoacidophilic microorganisms, including Sulfobacillus, Leptospirillum, and Ferroplasma strains was studied. The ores differed significantly in the content of the major metal sulfides (%): Sb(S), 0.84 to 29.95; Fe(S), 0.47 to 2.5, and As(S), 0.01 to 0.4.
I A, Tsaplina, V V, Sorokin, A E, Zhuravleva, V S, Melamud, T I, Bogdanova, T F, Kondrat'eva   +5 more
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pH-dependent release characteristics of antimony and arsenic from typical antimony-bearing ores

Journal of Environmental Sciences, 2016
The pH-dependent leaching of antimony (Sb) and arsenic (As) from three typical Sb-bearing ores (Banxi, Muli and Tongkeng Antimony Mine) in China was assessed using a pH-static leaching experiment. The pH changes of the leached solutions and pH-dependent leaching of Sb and As occurred in different ways.
Xingyun, Hu, Xuejun, Guo, Mengchang, He, Sisi, Li   +3 more
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Innovative Processing and Hydrometallurgical Treatment Methods for Complex Antimony Ores and Concentrates. Part II: Hydrometallurgy of Complex Antimony Ores

Journal of Mining Science, 2010
The article presents results of hydrometallurgical and bio-treatment of antimony ores and recommend new dissolvents for antimony sulfides. The authors introduce a processing plant which is a single operating processor of antimonic gold-bearing alloys with the successful electrolytic refining of anodes and production of cathode antimony and noble metal ...
P. M. Solozhenkin, A. N. Alekseev
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Experiments In Radiometric Testing Of An Antimony Ore Deposit

International Geology Review, 1963
The direct determination of the content of heavy elements in massive, breciated deposits as well as the possible identification of rock contacts and fault zones in small bore holes without coring has been demonstrated by the scattered gamma-radioactive method (SGRM).
V. N. Balashov, A. K. Polyakov
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Treatment of antimonial gold ores

2005
Publisher Summary Gold and antimony are associated in a number of gold ores with resulting complications in the gold extraction process. The principal mineralogical forms, in which gold occurs in these ores are metallic gold, free-milling, or associated with silicate gangue, as metallic gold associated with stibnite [Sb 2 S 3 ] will be seen from the ...
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Concentration of gold-antimony ores in the Sakha Republic (Yakutia)

Russian Journal of Non-Ferrous Metals, 2009
An analytical review of the main gold-antimony ores in the Russian Federation is presented. The practice is shown and the results of the concentration of Au-Sb ores in the Sarylakh, Sentachan, and Maltan deposits (the Sakha Republic (Yakutia)) are presented.
G. I. Baltukhaev, P. M. Solozhenkin
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Hydrometallurgical processes of antimony extraction from ores and concentrates

Theoretical Foundations of Chemical Engineering, 2016
Data concerning the preparation of antimony and complex ores by pyrometallurgical and hydrometallurgical methods, as well as results on developing a procedure for the hydrometallurgical processing of slime antimony concentrates using chloride dealkalization, have been presented.
V. A. Krenev, N. P. Dergacheva, S. V. Fomichev   +2 more
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