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A new depressant for use in enhanced separation of polymetallic sulphides is described. The depressant agent is used in conjunction with conventional collector agents and forthing agents in the flotation separation of copper, nickel, lead, zinc sulphides by depressing iron sulphides such as pyrrhotite, pyrite and marcasite in the tailing
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Request PDF | The effect of depressant fenugreek gum on the flotation of a copper-nickel sulphide ore which contains talc | In this paper, the effect of the depressant fenugreek gum (FGM) on the
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The present invention relates to froth flotation processes for recovery of mineral values from base metal sulfide ores. More particularly, it relates to new and improved sulfide mineral depressants for use in separating or beneficiating sulfide minerals by froth flotation procedures, and to a new and improved process for beneficiating sulfide
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A process for the froth flotation separation of value sulfide minerals from gangue iron sulfide minerals in which a novel terpolymer of copolymer of acylamide, acrylic acid and/or derivatives of acrylamide and acrylic acid is employed as a depressant for the gangue iron sulfide minerals
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Keywords: Sodium alginate, talc, copper –nickel sulfide, polysaccharide depressant, flotation . 1. Introduction Talc is a layered hydrous magnesium silicate in which the layers are held together by van der Waals bonds. During grinding, two different surfaces are formed. Basal cleavage planes are formed by rupture of van der Waals bonds
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Flotation of a variety of non-sulphide and mixed sulphide plus non-sulphide copper ores is disclosed. Stabilization of non-sulphide copper mineral surfaces by sulphidization is initially required and a selective complexing agent able to complex with the copper sulphide surface is then added as conditioner. Diphenylguanidine proved to be a highly selective and fast acting surface conditioner
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Sulphide ores are the major sources of base metals like Copper, Lead, Zinc, Nickel and Cobalt. Beneficiation of these base metal sulphide minerals is predominantly through the froth flotation
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Sulphide ores are the major sources of base metals like Copper, Lead, Zinc, Nickel and Cobalt. Beneficiation of. these base metal sulphide minerals is predominantl y through the froth flotation
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Both ore samples were milled at 66% solids in synthetic plant water (Wiese et al, 2005a) to achieve a grind of 60% passing 75 μm. The milled slurry was transferred to a modified 3 L Leeds flotation cell, where the volume was made up using synthetic plant water to produce 35% solids. The cell was fitted with a variable speed drive and the pulp
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and copper sulphiate additi on on the flotation perform ance of sulphide minerals from Merensky ore Part I: Pul p chemistry, Minerals Engineering , 78: 153-163. Bremmell, K E, Fornas iero, D and
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Jun 08, 2016 Promoter for oxidized base metal ores. Also used for flotation of vanadium and auriferous pyrite ores. Reagent 425 A yellow to greenish yellow hydroscopic powder. 5% solution .2 to .5 Developed primarily for flotation of oxidized copper ores. Promoterfor malachite and azurite without sulphidization. Reagent 444: A yellow water soluble powder
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The nickel silicates are treated using either pyrometallurgical or hydrometallurgical methods. The reagent practice in the flotation of nickel and copper–nickel ores depends on three basic factors: mineralogy of the ore, flowsheet employed in the treatment of a specific ore, and degree of liberation
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Talcum is a common gangue with which sulphide ores are associated, it has an adverse impact on sulphide ores flotation and product index due to its high natural floatability. In this paper it takes talcum-bearing copper sulphide ores from DongChuan in Yunnan province as experimental samples, and a series of tests on depressing talcum in the copper suphide ore flotation were carried out
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Chlorite and serpentine are common magnesium-containing gangue minerals in copper sulfide flotation. In this study, sodium alginate, a natural hydrophilic polysaccharide, was introduced as a selective depressant for these gangue minerals. Micro-flotation tests were conducted on both single minerals and synthetic mixtures. The flotation results showed that sodium alginate could
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A new depressant for use in enhanced separation of polymetallic sulphides is described. The depressant agent is used in conjunction with conventional collector agents and frothing agents in the flotation separation of copper, nickel, lead, zinc sulphides by depressing iron sulphides such as pyrrhotite, pyrite and marcasite in the tailing
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A method for the benefication of value sulfide minerals from sulfide ores with selective separation of sulfide minerals which comprises: a) providing an aqueous pulp slurry of finely-divided, liberated ore particles; b) conditioning said pulp slurry with an effective amount of a synthetic depressant, a sulfide mineral collector and a frothing agent, respectively, said depressant comprising a
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Jan 01, 2000 Flotation- Surface Chemistry and Reagents C8b-1 NEW SYNTHETIC POLYMERIC DEPRESSANTS FOR SULFIDE AND NON-SULFIDE MINERALS D. R. Nagaraj Cytec Industries Inc., Stamford Research Laboratory,1937 West Main Rd., Stamford, CT 06904, USA Abstract Flotation operations use a wide variety of depressants for sulfide and non-sulfide minerals to achieve both
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Jan 01, 1989 The use of carboxylmethyl cellulose reagents as depressants in copper/nickel flotation was reported in the U.S.S.R. in the 1950's (Vaneev, 1957). Later similar reagents were used more extensively in Australia to depress the natural floatability of the magnesia bearing minerals in nickel sulphide ore bodies
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3. Flotation of Sulphide Ores . Sulphide ores are the major sources of base metals like Copper, Lead, Zinc, Nickel and Cobalt. Beneficiation of these base metal sulphide minerals is predominantly through the froth flotation technique. Some of the most important sulphide minerals are: Galena (PbS), Sphalerite (ZnS), Chalcocite (Cu. 2. S), Covellite
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The most reported polymeric depressant is carboxymethyl cellulose (CMC), which has been widely used for depressing MgO-type gangue minerals in nickel sulfide flotation [10]. Although many works on the polysaccharide depressants of chlorite and serpentine have been presented, they have generally focused on the
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of copper sulphate dosage that can activate the chromite and also to evaluate the effect of the depressant type and dosage on the recovery of chromite in the flotation of UG2 ore. The two depressants selected were for evaluation of the guar gum, IMP4 and the carboxymethyl-cellulose (CMC), KU5. Flotation performance was evaluated using the
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