Both S.G. Salami and I.C. Nixon, who are British, studied the reaction mechanism of flotation reagents on the electrode surface of sulfide ores by electrochemical test method, explained the formation mechanism of collector products on the surface of sulfide ores, and indicated the action mode of collector, oxygen, and sulfide ore minerals ...
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Flotation test results for the multi-stage desulfurization of porphyry copper ... The main results demonstrated that sulfur recovery can reach up to 97 % using the following optimal conditions: pH ...
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Further, the sulfur content in the fluorite concentrate can be reduced to 0.02% with 91.52% fluorite recovery by single flotation test with 1.7 kg/t renewable collector dosage.
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In this research, a Test Rig Flotation Column was used to reduce the ash and sulfur content for two Colombian coal samples, Guachinte and Yolanda.
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The method of the flotation test was the same as that in Section 2.2.1.2 Pure Mineral Flotation, and the collector (IPETC) dosage and pulp pH value are 3 × 10 −5 mol/L and 8.0, respectively.
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According to the data obtained from batch flotation tests, the maximum recovery of total sulfur was achieved when the operational parameters were set to the PAX dosage 200 gr/t, MIBC dosage 150 gr ...
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In the batch flotation test, the slurry which was ground for 5 min was transferred to the flotation cell. ... which indicated that the butyl xanthate was an efficient collector for pyrite in the flotation of high-sulfur bauxite. 3.5. Open-Circuit Flotation Test. The open-circuit tests adopt the "one roughing, one cleaning and two scavenging ...
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Sulfur Flotation Performance Recognition Based on Hierarchical Classification of Local Dynamic and Static Froth Features. Publisher: IEEE. Cite This. …
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The desulfurization of high-sulfur bauxite via flotation is more difficult than conventional sulphide, since the finely disseminated sulphide in the high-sulfur bauxite can lead to excessive particle entrainment, increase of froth, and low separation efficiency. ... The flotation test results obviously show that sodium silicate is an effective ...
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According to the above flotation condition test about activator and collector for gold-bearing sulfide, a reasonable flotation process was designed. ... Copper–ammonia complex-ions have important application in lime–sulfur-synthetic-solution with alkali-catalyzed process of gold ores . The performance of mixed reagents of copper sulfate …
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This study was the lab-scale testing of an integrated method consisting of froth flotation combined with gravity and magnetic separation. Reverse flotation located at the end of the primary treatment circuit (high- and low-intensity magnetic separation) will lower a large amount of the sulphur from magnetic separator concentrate.
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3.3 Flotation pH test The influence of pulp pH value on flotation index was investigated, and the pulp pH value test was conducted. The test flow chart was shown in Figure 2, and the test results were shown in Table 5. FIG. 2 Flow chart of flotation desulphurization test influenced by pH value of high-sulfur bauxite
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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 …
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The tests show that changes in the oxygen content and the pH value of the pulp after ultrasonic conditioning is beneficial for the inhibition of pyrite flotation. 3.5.2 Effects of temperature on high-sulfur coal flotation A series of tests were carried out at the temperatures of 24 and 57 to elucidate the effects of temperature on high-sulfur ...
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Sulfur removal from tungsten concentrates is achieved through reverse flotation. • The pulp pH of reverse−flotation desulfurization process should be lower than 6. • The sulfur content decreases from 4.53% to 1.77% after desulfurization treatment. • The average value of sulfur removal efficiency in the industrial test was 57.19%.
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O-isopropyl-N-ethyl thionocarbamate (IPETC) collector was used to selectively recover elemental sulfur from a high-sulfur residue, and its flotation performance, structure–property relationship and adsorption mechanism to elemental sulfur were studied. The raw ore flotation test showed that IPETC displayed superior …
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This paper proposes a flotation performance recognition system based on a hierarchical classification of froth images using both local dynamic and static features, which includes a series of functions in image extraction, processing, and classification. Within the integrated system, to identify the abnormal working condition with poor flotation …
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The flotation tests revealed that the sulfur–phosphorus mixed acid could depress the apatite effectively. ... The monomineral flotation test and microcalorimetry were used to study the flotation ...
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high-sulfur bauxite is mainly sulfide, containing a small amount of sulfate. It is difficult to remove sulfur sulfate through flotation, so the primary target mineral for desulfitization is pyrite. 2.2. Methods 2.2.1. Flotation test All flotation experiments were performed in a flotation cell (1.5 L, XRF, China), and the agitation speed was ...
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and a sulfur flotation test was carried out to study the influe nce of activator type on the ac tivation . effect of mineral sulfide. The test results are shown in Figure 6.
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The sulfur grade and concentrate recovery increased by 11.63 % and 9.10 %, respectively, and the lead and silver recoveries from the tailings increased by 8.72 % and 9.50 %, respectively, compared with those obtained by using a conventional flotation process. These test results indicate that ultrasonic pretreatment is an effective …
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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.
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The new development of selectivity and parameter control in the flotation process of sulfide ores has been achieved by regulating the pulp potential to realize the …
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The sulfur in the leaching residue can be upgraded to 90% in grade by froth flotation and the sulfur concentration can be followed by sulfur purification and selenium and tellurium removal.
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Further, the sulfur content in the fluorite concentrate can be reduced to 0.02% with 91.52% fluorite recovery by single flotation test with 1.7 kg/t renewable collector dosage. Moreover, the closed-circuit flotation process was designed, fluorite concentrate with CaF 2 grade of 97.08% can be obtained, and the sulfur content is only …
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Sulfidation, where Y is now sulfur (S), is a promising avenue to separate mixed oxides, where X is oxygen (O). Indeed, sulfidation is already used industrially in …
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Flotation-hot filtration method 2, 3 is predominant for recycling element sulfur in the high-sulfur residue, due to its simple process, low -cost production and feasible scale- up . Therefore, it ...
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Exploring new ways to acquire niobium resources is essential to resolve niobium supply risks, due to the fact that, at present, 99% of niobium is controlled by only two countries. In the present work, a flotation technique was applied to separate niobium from low-grade niobite ore. To maximize the utilization of the original ore resources, pre …
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Micro-flotation tests results showed that the addition of the sulfur at a small S/ZnCO3 mole ratio (0.05) during the thermochemical modification process facilitated flotation of the smithsonite ...
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