May 24, 2002 Cyanide Plays A Role Of Varying Importance In The Metallurgy Of Gold, Silver, Copper, Nickel, Cobalt, Lead, Zinc, Molybdenum, And Cadmium. In The Copper, Lead, And Zinc Industries The Primary Uses For Cyanides Are As Depressants For The Flotation Of Iron And Zinc Minerals And For The Reactivation Of Copper Minerals In The Flotation Of Molybdenite.
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We offer a broad range of solvent extraction reagents, collectors promoters, frothers, flocculants, and depressants. Products include specialized collectors used in the separation of copper sulfide ores and for copper containing byproduct metals, such as gold and molybdenum. Flotation. Our proprietary FLOTATION MATRIX 100 TM is a methodology ...
the flotation recovery of Ni, Cu and Co from a nickel-copper sulphide ore. The effect on flotation performance of various parameters such as pH, collector dosage, solids and depressant dosage at different levels was investigated. Therefore, the main objective of the study was to optimize the process parameters for the flotation of base metals ...
Aug 01, 2005 Surface oxidation of secondary minerals, such as chalcocite, bornite and digenite, present in the Salobo copper ore makes their flotation difficult and requires excessive reagent consumptions. Two possibilities for reducing the collector and fr other additions were investigated. These were sulfidization of the pulp prior toflotation and using nitrogen to replace air in flotation.
A simpler flotation circuit with lower operating and capital costs for treatment of such copper-gold-pyrite ores with an elevated pyrite head assay was sought in the described work. After characterising the ore, the objective was to apply bulk rougher flotation of both the copper minerals and pyrite for the copper-gold-pyrite ore at natural pH.
Jul 18, 2013 The ore sample was ground to below 200 m and then collective and selective sulphide flotation tests were performed. In flotation tests, depression was achieved using non-toxic reagents and consequently individual copper, lead and zinc concentrates assaying 31.68 Cu, 67.69 Pb, 49.79 Zn were obtained with 72, 80 and 57 metal recoveries ...
For refractory oxidised copper ores of Huidong Sichuan province, studing the different depressants on the influence of oxidised copper ores flotation behavior. The results showed that the depressanting effect of the combination of sodium hexametaphosphate primarily is better. When the dosage of the combination of sodium hexametaphosphate and sodium humate reagent is 300 gt, ratio is 21,the ...
Pionera F-100 improved copper and gold recovery in a bulk flotation process by clay depression. The Telfer mine is a copper and gold operation located in the Pilbara region of Western Australia. Open-pit ore, predominately chalcopyrite with some chalcocite, and underground ore, predominantly chalcopyrite, is treated in two parallel trains with ...
selectively with depression of zinc and iron, followed by reflotation of the copper-lead tailing for recovery of zinc9. The polymetallic separation flowsheet of copperlead bulk flotationcopper lead separationpriority floating zinc and pyrite from the bulk flotation tailings was used based on the ore
Abstract This paper reports the results of flotation tests conducted with a copper-lead-zinc sulphide ore. The major sulphide minerals in the ore are chalcopyrite, galena, sphalerite, marmatite and pyrite with corresponding metal amounts of 6.80 Pb, 1.05 Cu and 1.50 Zn, respectively. The ore sample was ground to below 200 m and then collective and selective sulphide flotation tests were ...
Handbook of Flotation Reagents Chemistry, Theory and Practice Flotation of Sulfide Ores by Srdjan M. Bulatovic ISBN 0444530290 Publisher Elsevier Science amp Technology Books Pub. Date April 2007
The flotation of gold-bearing ores is classified according to ore type i.e. gold ore, gold copper ore, gold antimony ores, etc., because the flotation methods used for the recovery of gold from different ores is vastly different. 17.2 GEOLOGY AND GENERAL MINERALOGY OF GOLD-BEARING ORES The geology of the deposit and the mineralogy of the ore ...
The Mimosa ore is characterised by an unusually large amount of talc, which often causes problems during the flotation of the PGM minerals due to the fact that talc consumes high amount of reagents. Therefore the purpose of the second part of this thesis was to investigate the possibility of removing talc prior to the flotation process
Copper-Lead-Zinc ores. The Cu-Pb-Zn separation process is among the most challenging flotation separations primarily because the first step must entail bulk flotation of the two most readily floatable minerals with these two minerals separated in a differential flotation stage. In this case, as a general rule because both copper and lead ...
M. B. Hayat et al., Flotation Behavior of Complex Sulfide Ores in the Presence of Biodegradable Polymeric Depressants, International Journal of Polymer Science, vol. 2017, Hindawi Publishing Corporation, Jun 2017.
Jan 26, 2021 Pyrite depression in the flotation of copper ores is difficult due to the activation of Cu2 ions on pyrite surface. In this study, the radical chain reaction involving the redox cycling of CuIII induced by sodium metabisulphite MBS was exploited to selectively depress the flotation of copper-activated pyrite at pH 8.0. Electrochemical measurements revealed that the presence of Cu2 and ...
Jun 12, 2017 Flotation Behavior of Complex Sulfide Ores in the Presence of Biodegradable Polymeric Depressants. Muhammad Badar Hayat,1,2 Lana Alagha,1 and Syed Mohammad Sannan3. 1Department of Mining and Nuclear Engineering, Missouri University of Science and Technology, Rolla, MO 65401, USA. 2Mining Engineering Department, University of Engineering and ...
The partial selective depression of copper sulphides and resultant improvements in molybdenum grade is demonstrated. EXAMPLE 3. A sample of a complex sulphide ore assaying 0,53 copper, 9,5 lead, and 2,6 zinc was wet-milled with a depressant reagent at pH8 and subjected to batch flotation using as collector Senkol 50 a composition containing sodium mercaptobenzthiazole and marketed by ...
Problem A copper ore initially contains 2.09 Cu. After carrying out a froth flotation separation, the products are as shown in Table 1. Using this data, calculate a Ratio of concentration b Metal Recovery c Metal Loss d Weight Recovery, or Yield e Enrichment Ratio
In mineral ore flotation, depression comprises steps taken to prevent the flotation of a particular mineral. In one-mineral flotation systems, it is commonly practiced to hold down both the gangue materials and low-assay middlings. In differential flotation systems, it is used to hold back one or more of the materials normally flotable by a ...
characteristics, Hellyers sequential flotation circuit versus Cadias simple coppergold flotation circuit. They have a common theme in that pyrite forms the principal floatable concentrate diluent. Hellyer ore contains finely disseminated chalcopyrite, sphalerite, galena, and tetrahedrite.
Jan 18, 2021 Flotation. Figures 1 and 2 present lab scale batch flotation results from two separate studies, focusing on graphite and copper-activated pyrite, respectively. In Fig. 1, the baseline graphite recovery where no starch is used yields a recovery of 93.9 0.5.This decreases slightly to 82.3 4.3 for NWS dosed at the lowest depressant dose of 120 gt.
Commercial porphyry copper ores usually contain copper grades between 0.5 and 21. Minor amounts of gold are often present in these orebodies2. The concentration of gold in the majority of large-scale coppergold ores is low, typically around 1-2 gt3,4. Flotation is the principal method of pre-concentration for copper and gold5,6. Thus ...
History of Sulphide ore flotation dates back to beginning of 20th century. Sulphide ores are major sources of base metals like Copper, Lead, Zinc, Nickel, Cobalt etc. Beneficiation of these base metal sulphide minerals is predominating through froth flotation technique. This technology has acclaimed importance as a versatile process for
Sep 01, 1997 Gold minerals, such as aurocupride AuCu3, float readily in the primary copper circuit. However, if cyanide or bisulphite are then used as depressants for iron minerals in the cleaners, aurocupride recovery is reduced. Gold tellurides float well, but their recovery is compromised by the presence of soluble heavy metal salts.
In flotation of gold-containing base metal ores, a number of modifiers normally used for selective flotation of copper lead, lead zinc and copper lead zinc have a negative effect on the floatability of gold. Such modifiers include ZnSO. 4 7H. 2. O, SO. 2,Na. 2. S.
Jan 01, 2016 There has been a significant increase in the availability of selective flotation collectors for gold, and these are now widely in use on many large and new copper flotation plants around the world. This chapter covers the range of collectors, frothers, activators, and depressants available for the flotation of gold ores.
The invention concerns the use of 5-hydroxy-3-thiazolidine-2-thiones of the structure I STR1 where R 1 CHOH m , R 2 CHOH n where mn0 to 6, and R 3 is alkyl or hydroxy-alkyl as depressants in the flotation of mixtures of base metal minerals, particularly those containing molybdenum, copper, lead, zinc and to flotation processes using these compounds.
cording to ore type i.e. gold ore, goldcopper ore, goldantimony ores, because the Sotation methods used for the recovery of gold from different ores is vastly different. Geology and General Mineralogy of Gold-bearing Ores The geology of the deposit and the mineralogy of the ore play a decisive role in the selection of the best treatment ...
Natural pH is recommended for gold flotation. Alternatively using soda ash for pH adjustment can reduce gold depression. Where gold is associated with pyrite in base metal ores where iron sulphides are depressed and report to the tailings, a separate tailings pyrite flotation
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