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David et al. (2011) reported a magnetite concentrate with less than 0.1% sulphur after flotation. However, they did not give details on how this was achieved. To produce a high value product Northland Resources is targeting a magnetite concentrate with a sulphur level below 0.05% w/w. This requires more than 98% w/w of the sulphur …
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ABSTRACT In this study, the desulphurization of iron ore concentrate using reverse flotation was investigated. In this paper first, behavior of the flotation of both pure – pyrite and iron oxides-pyrite with xanthate has been examined based on micro-flotation results and zeta-potential measurements. Then, an effort has been made to investigate …
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The flotation concentrate averaged 29.1% sulphide sulphur. Gravity concentration before rougher flotation concentration (from the gravity tailings) recovered 22.4% of the Gold and 4.4% of the silver in 0.16% of the total feed weight with a gold grade of 920 g/t and a silver grade of 5,750 g/t.
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The extraction of nickel (Ni) from sulfide resources commences with flotation to produce a concentrate which is then smelted to produce a nickel-enriched phase called matte, and further refined to …
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The physical activities in a sulfur flotation cell involve the movement of solid particles driven by the flow of air and liquid. As illustrated in Figures 2 and 3 [], considering the different roles of pulp and froth in determining the cell dynamics, the flotation cell is divided into two sections: froth volume and pulp volume.The froth volume and pulp …
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In anticipation of future demands, a comprehensive understanding of the chemical and mineralogical characteristics of nickel-bearing minerals is a prerequisite to devising effective nickel beneficiation methods. Of particular importance are markers in the mineralogy of the flotation concentrate that inform beneficiation strategies to improve …
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The flotation concentrate averaged 29.1% sulphide sulphur. Gravity concentration before rougher flotation concentration (from the gravity tailings) recovered 22.4% of the Gold and 4.4% of the silver in 0.16% of the total feed weight with a gold …
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An efficient flotation process was developed to selectively recover elemental sulfur from a high-sulfur pressure acid leaching residue of zinc sulfide concentrate. The process mineralogy analysis showed that the …
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An efficient flocculation flotation-hot filtration process was developed to recover elemental sulfur and sulfide minerals from a pressure acid leaching residue of …
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1. Introduction. As the main type of iron ore, magnetite is the main raw material in the steel industry, which has a strict demand for its sulfur content [1], [2], [3].With the continuous improvement of the quality requirements of iron concentrate, effective desulfurization is of great significance to improve the utilization rate of iron ore …
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The flotation concentrate averaged 29.1% sulphide sulphur. Gravity concentration before rougher flotation concentration (from the gravity tailings) recovered …
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The flotation concentrate averaged 29.1% sulphide sulphur. Gravity concentration before rougher flotation concentration (from the gravity tailings) recovered 22.4% of the Gold and 4.4% of the silver in 0.16% of the total feed weight with a gold grade of 920 g/t and a silver grade of 5,750 g/t.
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From the results shown in Fig. 4, the addition of WG can improve aluminum concentrate yield and reduce sulphur content of the concentrate during flotation desulfurization. Under uniform dosing of agents and flotation conditions, a roughing desulfurization can reduce sulphur content of aluminum concentrates from 0.90 to 0.29%.
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The flotation concentrate averaged 29.1% sulphide sulphur. Gravity concentration before rougher flotation concentration (from the gravity tailings) recovered …
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The flotation concentrate was 10.74% of the whole feed weight, assayed 44.3 g/t Au, 1,665 g/t Ag and 21.9% sulphide sulphur and represented gold and silver recoveries of 72.4% and 85.4% ...
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Hot Filtration of Flotation Concentrate. The result of sulfur phase analysis for the concentrate is displayed in Table 6. 81.16% of the sulfur in the concentrate existed as elemental sulfur, i.e., the purity of elemental sulfur concentrate product achieved 81.16%. However, the sulfide content also arrived at 6.37%, which decreased …
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The operation objective of a sulfur flotation process is to recover as much as high-graded sulfur as possible from the mineral residue by finding the optimal …
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The sulfur content in the flotation concentrate was about S (13.6 %), and the silica content was SiO 2 (22.7 %). The profile of the flotation concentrate after flotation was presented in Table 2. Table 2. Elemental composition of the flotation concentrate used for the bioleaching tests. Cu (%) Ag (ppm) Fe (%) Pb (%) Zn (%)
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produce 5.37 tons of high-quality sulfur concentrate (S grade 33.74%), which will further ... The pyrochlore ore sample was floated as a whole in batch flotation but the flotation concentrate as ...
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The nickel bearing phases in the flotation concentrate were pentlandite (7–8 wt%) and violarite (7–9 wt%) with pyrrhotite (39 wt%) and pyrite (13 wt%) being the major sulfide minerals. The leaching conditions employed are summarized in Table 5. For experiments involving co-processing of laterite and concentrate, the nickel concentrate …
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Zinc Rejection from Sulfur Concentrate. Another key to the success of galena –pyrite mixed flotation is to remove zinc from sulfur concentrate and recycle it to zinc flotation . Copper sulfate and butyl xanthate as the most popular sphalerite activator and collector were induced in this study, and Fig. 4 shows the flotation results. As can …
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The flotation concentrate averaged 29.1% sulphide sulphur. Gravity concentration before rougher flotation concentration (from the gravity tailings) recovered 22.4% of the Gold and 4.4% of the silver in 0.16% of the total feed weight with a gold grade of 920 g/t and a silver grade of 5,750 g/t.
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Alternatively, give that the major sulfide mineral in sulfur concentrate is pyrite and the sulfur content is more than 30%, the generated sulfur concentrate can be utilized to produce ... Optimal control of sulphur flotation process based on machine vision **This research was support by the National Natural Science Foundation of China …
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In the process of flotation, cobalt enters into sulfur concentrate, which is closely related to pyrite. Generally, Co‐bearing sulfur concentrate with a cobalt grade of about 0.6% can be enriched by
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INTRODUCTION Sulphur flotation is usually integrated into a hydrometal- lurgical process to recover the valuable sulfur from leaching residues of sulfide minerals (Wang et al. (2018)). The operational target of the sulphur flotation is to increase the sulphur concentrate grade while decrease the sulphur tailing grade (Shean and …
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The operational target of the sulphur flotation is to increase the sulphur concentrate grade while decrease the sulphur tailing grade (Shean and Cilliers (2011)).
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3.3. Conventional roasting of flotation concentrate. Roasting in the auriferous industry involves the heating of complex or refractory gold concentrates containing sulphides (mainly pyrite and arsenopyrite) and carbonaceous materials in air to produce volatile arsenic xide (As 2 O 3), sulphur dioxide (SO 2) and carbon dioxide …
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A recent study of a number of flotation plants found that floated gold grains in the concentrate had a greater concentration of silver and sulfur than the gold remaining in the tailings, implying that they assisted gold flotation (Chryssoulis, 2001). Laboratory flotation tests on a flotation-plant tailing sample using NaHS and silver ions ...
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FLOTATION EXPERIMENTS Pyrite is the main source of sulfur in the magnetic concentrate of Gol-e-Gohar iron ores. In the presence of oxygen, xanthates combine with pyrite and forms dixanthogen making pyrite floatable (Rao, 2003).
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The content of sulfur in iron ore concentrate is the major problem of steel making industries. In this paper, the reverse column flotation operation is used to reduce the amount of sulfur of the ...
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