1 Introduction Pyrrhotite predominates among iron sulfides in a number of copper gold sulfide deposits and its recovery during the flotation process reduces product quality and causes environmental problems such as iron oxide slag generation and sulfur oxide emissions in the downstream smelting process Allison and O Connor 2011 However
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— The pyritic copper gold ore used in this study was obtained from a copper gold mine in Asia The pyrite rougher concentrate was obtained by two stage copper and pyrite rougher flotation using the conditions in Table 1 and reported in Agorhom et al 2013 However in the present studies the focus is to examine flotation depression of
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— A study by Ealedona and Fujita 2006 revealed an important reduction in the arsenic content of the flotation concentrate from % to % As an increased recovery of gold in the tailings and a slight improvement in antimony recovery in the flotation concentrate when a small dosage of soluble starch 25 g/t was added before the
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— Gold telluride ores are important gold refractory ores due to the presence of sulfides and other gangue materials The classification and main physical properties of gold telluride ores were described and possible treatment methods including flotation leaching and oxidation were reviewed The results show that flotation procedures are much easier
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— The basic factors principles and variables affecting froth flotation are enumerated in condensed form below Ore a Mineralogical character b Fineness of grinding c Method of grinding Agents a Principal flotation agent Oil α Character β Quantity b Minor agent α Character β Quantity Water a Quantity with respect to
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— Abstract The flowchart is developed for gold ore flotation at the reduced impurity of the rougher flotation product with difficult middlings The rougher flotation concentrate is subjected to scavenging by aerated air and hot steam mixture In cold pulp slurry the steam condensation heat is removed from bubbles to wetting films With
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— ABSTRACT Prospects of the application of new class of reagents cloud point polymers with functional groups on the gold and platinum for extraction of micro and nanoparticles of noble metals from fine grinded ores and by products were considered The reaction of synthesis of cloud point copolymer on the basis of N isopropylacrylamide and
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— Flotation is one of the most important gold recovery processes and its main restriction is to recover coarse gold particles ranging from 400 to 250 µm This process recovers fine particles of free gold gold associated in any form with sulphides and native gold present in polymetallic deposits with certain degree of oxidation
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— The gold flotation process mainly includes four stages dosing agitation aeration and foam scraping Gold flotation process is suitable for processing gold bearing sulfide ore with fine particle size and good floatability During flotation sulfide ore is enriched into sulfide concentrate as a carrier for gold
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— In flotation pH control is a vital method to control selective mineral separation A standard depressant that is used is an Alkali An Alkali is any substance that when mixed with Acid will neutralize each other and form a new chemical substance called a BASE Starch is particularly useful in the flotation of native gold in the presence of
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— Application of flotation on a reasonable scale within the gold mining industry commenced in the early 1930s following the introduction of water soluble flotation collectors specifically xanthates and dithiophosphate collectors that allowed differential flotation of sulfide minerals followed by the installation of pyrite flotation plants on numerous gold
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— Flotation is one of the most important gold recovery processes and its main restriction is to recover coarse gold particles ranging from 400 to 250 µm This process recovers fine particles of free gold gold associated in any form with sulphides and native gold present in polymetallic deposits with certain degree of oxidation
— Six flotation tests were conducted using the copper gold ore and its mixtures with quartz clay minerals and gypsum Fig 1 shows the mass recovery as a function of water recovery from these tests As can be seen flotation of the ore or baseline resulted in a 5% mass recovery and 31% water recovery at the completion of flotation
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