Copper sulfide ores must be concentrated before they can be economically transported and smelted. The universal technique for this concentration is froth flotation of finely ground ore. Froth flotation entails attaching fine Cu-sulfide mineral particles to bubbles and floating them out of a water–ore mixture.
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The depressing action of cyanide on pyrite during froth flotation is well known (Sutherland and Wark, 1955) ... An industry survey of flotation reagents used on 20 flotation plants treating gold-bearing copper sulfide ores was undertaken in 2012 (Kappes et al., 2013). Thiophosphate-based collectors were used on eight plants, thiocarbamate ...
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Froth flotation of copper-zinc-lead ores is a complex process based on similar metallurgy processing and strong interactions between chalcopyrite and sphalerite.
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The pyrite recovery however, decreased down to ~ 4% when synthetic water samples containing higher concentrations of copper and sulfide ions were used in flotation. This suggests that pyrite flotation is relatively unaffected by low concentrations of sulfide ions in the recycled water, and only when the concentration is increased do the …
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Flotation is a common mineral processing method used to upgrade copper sulfide ores; in this method, copper sulfide mineral particles are concentrated in froth, …
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Copper sulfide ores must be concentrated before they can be economically transported to a smelter. Froth flotation is part of a copper beneficiation process in which finely …
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The most widely used sulphidizer is sodium sulphide, which is commonly used in the flotation of lead carbonate ores and also slightly tarnished sulphides such as pyrite and galena. In the sulphidization of ores containing precious metals careful control must be exercised as in some instances sodium sulphide has been known to have a …
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Froth flotation is a complex process known for more than a century [1]. It has one of the largest tonnage capacities among separation technologies [2]. ... as an incentive parameter in the Arrhenius-type equation to describe the kinetics of collectorless chalcopyrite flotation from copper shales: ... Flotation performance of sulphide ores also ...
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The results indicate distinct rate-controlled performance differences among the frothers tested. Keywords Frothers; frother performance; flotation kinetics; massive copper sulphide ore INTRODUCTION Frothers are chemical reagents that essentially aid the formation and stabilization of a suitable froth on the pulp surfaces of froth flotation cells.
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Froth Flotation of Sulphide. Froth flotation is a typical method used to extract sulfide minerals, such as copper, lead, zinc, and other sulfides. Copper flotation and sulfide mineral froth flotation share many of the same principles. To extract the valuable minerals from the gangue minerals, the sulfide ore is crushed and pulverized.
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The effect of water chemistry on froth stability and surface chemistry of the flotation of a Cu-Zn sulfide ore. Int. J. Miner. Process. 2012, 102–103, 32–37.
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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 technique.
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In parallel, the secondary ions present in seawater cause a colloidal precipitation and a strong buffering effect, which difficult the operation at high alkaline condition. The objective of this review is to present a summary of the current knowledge on the subject of seawater flotation processes, highlighting the copper sulphide ores …
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This study is focused on the froth flotation reprocessing of a copper mineral from flotation tailings. The effects of flotation parameters including pulp density, collector dosage, frother dosage ...
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Copper Sulfide Flotation Circuit Beneficiation of Copper Sulfide by Flotation Copper, due to the present world demand and price, is of foremost interest to the mining industry. Many new properties are either in the process of being brought into production or are being given consideration.
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In ore/mineral beneficiation, froth flotation is a method by which commercially important minerals are separated from impurities and other minerals by collecting them on the surface of a froth layer. ... Thus, the …
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Froth flotation is widely used for concentration of base metal sulphide minerals in complex ores. One of the major challenges faced by flotation of these ores is the ever varying grade and mineralogy.
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Froth flotation is a selective separation process to separate valuable materials (recyclables, minerals, and other fine-size waste) from unwanted materials (gangue) using air bubbles in a general floatation tank, Jameson flotation cell, or flotation column. ... In the flotation of copper–gold ores, the flowsheet is designed to produce a bulk ...
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Abstract Tecflote non-ionic organic agents are investigated as potential flotation collectors for copper–nickel sulfide ores. Adsorbability of four Tecflote agents having different-structure alkyl radicals and different numbers of functional groups is analyzed. The efficiency of the agents toward copper- and nickel-bearing minerals is …
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Froth flotation is a physicochemical process that is used to separate fine mineral particles from aqueous suspensions by selective attachment of some types of …
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Abstract and Figures This study is focused on the froth flotation reprocessing of a copper mineral from flotation tailings. The effects of flotation parameters including pulp density, collector ...
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The froth flotation technique was originally developed in about 1910 to raise the copper concentrations of the strip-mined ores of Bingham Canyon, near Salt Lake City [9], and was further perfected for the differential separation of lead, zinc, and iron sulfides at Trail, B.C., at about the same time [10]. Flotation technologies are now widely ...
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The flotation process for the concentration of ores is a method by means of which one or more of the minerals in the ore (usually the valuable ones) are picked up by means of a liquid film and floated at the surface of a mass of fluid pulp. Here they are separated from the other minerals, which remain immersed in the body of the pulp. In …
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This paper presents both the fundamentals of sulphide mineral flotation and the practical aspects of sulphide ore flotation. The fundamental aspects of the flotation of sulphide minerals both in the absence and presence of thiol collectors are discussed in relation to their crystal structure, surface chemistry and electrochemical characteristics.
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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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These oxidised copper minerals are found in weathered regions of most copper sulphide ore bodies The overlaying oxidic ore is usually stockpiled after it is removed from the sulphide lode and left ...
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Nowadays, froth flotation of chalcopyrite ore has developed a large number of reagents that make it possible to improve the mineral's buoyancy conditions, both in the presence of ions that …
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Sulphuric acid is employed occasionally as a modifying reagent, but its use is steadily decreasing, being confined chiefly to the treatment of lead and zinc ores. There are, however, one or two ores containing sulphide copper minerals which need an acid circuit for successful flotation.
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The volume of froth generated in the flotation machine under standard operating conditions is often referred to as froth power. ... In the treatment of massive sulfide copper–zinc ores, the reagent scheme and flowsheet varies by region, where in various plants around the world different techniques are developed. For example, in Russian ...
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This paper presents both the fundamentals of sulphide mineral flotation and the practical aspects of sulphide ore flotation. The fundamental aspects of the flotation of …
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For mixed oxide-sulfide copper ores, the chelating collector can achieve simultaneous flotation of copper oxide and copper sulfide minerals. However, the limitation of chelating collectors is their lack of selectivity, …
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Flotation of Copper Ores. In most plants engaged in the flotation of ores containing copper-bearing sulphide minerals with or without pyrite, pine oil is employed as a frother with one of the xanthates or aerofloat reagents or a combination of two or more of them as the promoter.
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