1.. IntroductionOver the last few decades, there has been considerable progress made in the understanding of how certain sulfide minerals can demonstrate natural or "collectorless" flotation under certain conditions (Heyes and Traher, 1977; Gardner and Woods, 1979; Traher, 1984).The purpose of this paper is to discuss some …
This invention is directed to the use of non-sulfur containing compounds as collectors in the froth flotation of certain mineral sulfide and metallic compounds. These non-sulfur-containing compounds may be from natural sources, such as vegetable oils, or synthesized commercial sources. These non-sulfide collectors can be used singularly, in …
In the DEHTT-treated chalcopyrite, the other S 2p 3/2 XPS peak at 161.04 eV was assigned to the S species of chalcopyrite. As shown in Fig. 10 (4) and Table 6, …
III.H.2.c Sulfide flotation. ... and sphalerite (ZnS). The other mechanism is electrochemical and gives an oxidation product that is the hydrophobic species adsorbed at the mineral surface. This is the primary mechanism for ... Alonso et al. [170] studied the feasibility of using vegetable oil as flotation collectors to recover coal from ...
The species sulfide and sulfites (SO 3 2−), bisulfite (HSO 3 1−), metabisulfite (S 2 O 5 2−), and sulfur dioxide (SO 2) have been widely used to control the flotation of sulfide minerals at moderately alkaline pH [133,146,147,148,149,150,151,152,153]. The reducing characteristics of this type of …
In this study, isothermal microcalorimetric technique and soil enzyme assay techniques were employed to investigate the toxic effect of typical sulfide mineral flotation collectors on soil microbial activity and showed a significant adverse effect of butyl xanthate, butyl dithiophosphate, and sodium diethyldithiocarbamate. The sulfide mineral …
Strong evidence of increased sulphide mineral oxidation, formation/precipitation of metal sulphate and replacement of collectors by sulphate ions at the mineral surface have been provided, which all result in decreased surface hydrophobicity (Ikumapayi et al., 2012b, Li et al., 2018) and therefore depression of …
2. Site descriptions2.1. Greens Creek mine. The Greens Creek mine is located approximately 30 km southwest of Juneau, Alaska, USA (Fig. 1).Mean annual air temperature and precipitation were 6.0 °C and 1380 mm a −1, respectively, from 1997 to 2007.This late Triassic sulfosalt-bearing polymetallic stratiform massive sulfide deposit …
This invention is directed to the use of non-sulfur containing compounds as collectors in the froth flotation of certain mineral sulfide and metallic compounds. These non-sulfur-con Login ... Flotation of sulfide mineral species with oils . United States Patent 7461745 ...
The sodium sulphide-induced collectorless flotation of several minerals are first introduced in this chapter. The results obtained are that sodium sulphide-induced collectorless flotation of ...
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WO2000009268A1 PCT/US1999/018055 US9918055W WO0009268A1 WO 2000009268 A1 WO2000009268 A1 WO 2000009268A1 US 9918055 W US9918055 W US 9918055W WO 0009268 A1 WO0009268 A1 WO 0009268
Apart from mineral flotation facilitated by collectors, collectorless flotation of sulfide minerals by electrochemical process has attracted research interest for decades [99]. The electrochemical treatment could enhance the surface hydrophobicity of sulfide minerals via formation of hydrophobic sulfur-rich species, e.g., metal-deficient ...
1. Introduction. In the mineral processing industry, lead-zinc sulfide ores are usually processed by froth flotation to enrich the purpose minerals [1].Flotation is a complex process, and the selective separation of minerals depends on the balance between the hydrophilic species and hydrophobic species on the mineral surface [2], …
1. Introduction. Froth flotation, as one of the greatest technologies in the 21st century, enables humans to utilize the mineral resources on a large scale [1], [2].In a froth flotation cell, the target mineral particles treated by the surfactant named collector will become hydrophobic and attach themselves to the rising air bubble to form particle-rich …
NEW Patent CD for Flotation of sulfide mineral species with oils : Everything Else. Skip to main content.us. Delivering to Lebanon 66952 Update location All. Select the department you want to search in. Search Amazon. EN. Hello, sign in. Account & Lists Returns & Orders. Cart All ...
This paper describes, in detail, the treatment of a copper/molybdenum sulfide ore (0.94% Cu and 0.05% Mo) using emulsified oil extender flotation (Ext-F) at laboratory scale.
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. Since the …
Sulphide Mineral Flotation A New Insight Into Oxidation Mechanisms Alireza Javadi ISSN: 1402-1757 ISBN 978-91-7439-592-1 (tryckt) ISBN 978-91-7439-593-8 (pdf) ... very much lower amount of oxidized iron species in the mill discharge than mild steel medium (Huang and Grano, 2006). The use of iron grinding materials slightly depressed the f
Recycling of process water in sulphide flotation: Part 3. Effect of calcium and sulphate species on sphalerite flotation to be submitted to Journal of Colloid and Interface Science. 4. Fatai K Ikumapayi, Maria Makitalo, Björn Johansson, K Hanumantha Rao, Recycling of process water in sulphide flotation: Part 4. Effect of calcium and sulphate ...
This invention is directed to the use of non-sulfur containing compounds as collectors in the froth flotation of certain mineral sulfide and metallic compounds. These non-sulfur-containing compounds may be from natural sources, such as vegetable oils, or synthesized commercial sources. These non-sulfide collectors can be used singularly, in …
This report presents research and conclusions in improving mineral recoveries and minimizing waste production in the flotation of sulfide ores. Froth flotation is a widely used, inexpensive process for commercial separation of minerals from gangue and minerals from each other. Extensive research has demonstrated that …
Flotation of Sulfide Components of Copper Ore in the Presence of n-Dodecane. Influence of n-dodecane aqueous emulsion on flotation of sulfide minerals …
CHAPTER 7– FLOTATION OF SULPHIDE MINERALS. Contents: Xanthate adsorption. Oxidation reactions. Activation & depression. Flotation of chalcopyrite, galena, …
Sulfide minerals are floated using mostly xanthates, dithiophosphates, and other thio compounds as collectors. The mineral-collector interactions and the selectivity in separating individual sulfide minerals from each other and from the rest of the nonsulfide particles can be controlled by a careful adjustment of pH and oxidizing, reducing, and …
This invention is directed to the use of non-sulfur containing compounds as collectors in the froth flotation of certain mineral sulfide and metallic compounds. These non-sulfur-containing compounds may be from natural sources, such as vegetable oils, or synthesized commercial sources. These non-sulfide collectors can be used singularly, in …
Flotation is a common mineral processing method used to upgrade copper sulfide ores; in this method, copper sulfide mineral particles are concentrated in froth, and associated gangue minerals are separated as tailings. However, a significant amount of copper is lost into tailings during the processing; therefore, tailings can be considered …
corpus id: 62830861; flotation of sulfide mineral species with oils cross-reference to related applications
1. Introduction. The continuous development of the global economy has resulted in a high demand for copper production and high copper consumption [1], [2], and exploitation and effective use of copper oxide mineral resources have attracted attention [3].Copper oxide deposits evolve from shallow copper sulfide deposits after long-term …
Sulfide flotation refers to the electrochemical process in which sulfide minerals are recovered by froth flotation, involving the transfer of electrons between different sulfide …
Redox potential (Eh) control can play a critical role during sulphide mineral flotation by influencing the reactions on the surface of the minerals and consequently the flotation behaviour.
In the DEHTT-treated chalcopyrite, the other S 2p 3/2 XPS peak at 161.04 eV was assigned to the S species of chalcopyrite. As shown in Fig. 10 (4) and Table 6, ... Lime use and functionality in sulphide mineral flotation: A review. Miner. Eng., 143 (2019), Article 105922, 10.1016/j.mineng.2019.105922. View PDF View article View in …
WO2000009268A1 - Flotation of sulfide mineral species with oils - Google Patents Flotation of sulfide mineral species with oils Download PDF Info Publication number ... oil oils flotation group Prior art date Application number PCT/US1999/018055 Other languages English (en) French (fr) Inventor Tom L. Young
sulfide appears to have a pronouncedeffec t on boththe flotation response and the associated reaction mech anisms. Bornite (CusFeS4 ) is a widely occurring copper bearing mineral often found associated with other sulfides (i.e., chalcoc ite, chalc opyrite, covellite, pyrrhotite, and pyrite) . Ifthe flotation edge of a sulfide
In this model the role of the oxygen is to oxidise lattice sulphide ion to sulphur. Flotation of Galena (PbS) Complete flotation of galena is achieved from pH 2 to pH 10 using ethyl xanthate The collector adsorption mechanisms were discussed above. The hydrophobic metal-collector species responsible for flotation is PbX 2.