Sep 17, 2011· A paper by workers from MMG Rosebery, the JKMRC and the University of Queensland, will present a review of the literature with regard to the selective removal of the arsenic bearing minerals from copper ores during flotation, summarizing the pros and cons of the various options, and will recommend a strategy for evaluation, while a paper from Japan will also consider the selective .
Mar 11, 2011· Abstract. The laboratory tests to find out the possibility of direct selective flotation of lead, copper and zinc minerals from the ore deposit "Podvirovi" were submitted to the Mineral Processing Department of the Faculty of Mining and geology, University of Belgrade.
Dextrins as selective flotation depressants for sulfide minerals 277 depressing power towards copper minerals because the reduction of flotation of copper minerals is greater than towards the lead minerals. Still greater amount of dextrin N8 depresses flotation of sulfides in the ore almost completely.
ABSTRACTSelectivity index (SI) and modified flotation rate constants of copper and iron were evaluated to rougher flotation circuit of the Sarcheshmeh copper ore by a series of batch flotation tests. Kinetics model of Agar was fitted to experimental data. The results indicated that firstorder kinetics model of Agar presented the time–cumulative recovery curves of flotation tests quite well ...
Oct 01, 2006· The selective flotation of enargite from other copper minerals — a single mineral study in relation to beneficiation of the Tampakan deposit in the Philippines The selective flotation of enargite from other copper minerals — a single mineral study in...
on its flotation was studied in a typical copper ore. A twostage (Cu and pyrite) rougher flotation indicated that maximum Au recovery (95%) can only be achieved with pyrite flotation (recovery, 93%). A decrease in grind size of the flotation feed from 70 µm to 38 µm and without pyrite flotation stage
May 01, 2008· Selective leaching of nickel from the copper flotation concentrate was possible due to the development of galvanic couple between copper containing chalcopyrititic phase and nickel containing pentlandite. Copper dissolution started after the maximum leachability of nickel was obtained under optimal conditions of leaching by Tf.
Keywords: Selective flotation; Sphalerite; Pyrite; Depressants 1. Introduction Pyrite is one of the major diluents of copper, lead and zinc concentrates. One explanation for the high flotation of pyrite in alkaline pH conditions is its inadvertent activation by copper either .
will inhibit the copper activation and subsequent collector adsorption. In addition, to remove pyrite during the flotation of galena and sphalerite, sodium cyanide is commonly used as a selective pyrite depressant [3, 911]. However, sodium cyanide consumption has been
flotation tailings and can be readily recovered by flotation with different flotation reagents. When amyl xanthate is used, 85% of chalcopyrite can be recovered with a copper grade of % in a singlestage froth flotation. The chalcopyrite flotation concentrate can be sent back to chloride leaching circuits.
feed is processed by selective flotation, in which galena is floated first with sodium propyl xanthate (SNPX) as collector, while sphalerite and pyrite are depressed with cyanide. The sphalerite is floated further with xanthate in the zinc flotation circuit after activation with copper sulphate. Selectivity against sphalerite poses a challenge ...
The process comprises subjecting such material to a conditioning stage with at least one watersoluble sulphurcontaining inorganic compound as a prerequisite step for further conditioning with nitrogencontaining organic chelating agents, preferably polyethylenepolyamines, prior to froth flotation wherein iron mineral, primarily pyrrhotite is depressed, thus allowing selective recovery of mono/multimetallic .
We study the effect of one of the main parameters of flotation oredressing, specifically, alkalinity of the pulp, on the selective flotation of sulfide and oxide minerals of copper from the Udokan deposition ores (Chita oblast). It is found that the optimum values are pH = 9 for sulfide minerals of copper and pH = 10 for the oxide ones.
Selective flotation tests and pulp potential measurements were carried out at various sodium sulfide concentrations from 10 −6 to 10 −1 mol/L with different collectors. After adding the mineral sample to a 5 × 10 −3 mol/L NaCl aqueous solution, the collector (SBX or kerosene), the depressor (sodium sulfide), and the frother (terpenic oil) were added in sequence then adjusted the pH to 11.
Dec 25, 1973· A flotation promoter for the selective water flotation of thin finely ground copperbearing sulfide ores and the suppression of iron pyrites therein, finely ground state consisting essentially of an aliphatic hydrocarbon sodium sulfate having a C 8 C 10 carbon chain and having propylene oxide chemically combined therewith in an amount in the range of 5 to 30 mols.