Ultrasonic pretreatment for enhancing flotation separation …
Under optimized conditions of ultrasonic power, ultrasonic treatment time and solid weight, pilot-scale flotation produced a concentrate that the sulfur grade and recovery of concentrate increased by 11.63 % and 9.10 %, respectively, and the lead and silver recoveries of tailings increased by 8.72 % and 9.50 %, respectively, compared with …
Study on the Flotation Desulfurization of High-sulfur …
Study on the Flotation Desulfurization of High-sulfur Bauxite in Northwest[J]. Multipurpose Utilization of Mineral Resources, 2020, (6): 127-130. doi: 10.3969/j.issn.1000-6532.2020.06.021. Citation: Li Zhenyu. Study on the Flotation Desulfurization of High-sulfur Bauxite in Northwest[J].
Volatilization behavior of lead, zinc and sulfur from flotation
As shown in Table 1, Table 2, the chemical composition of the flotation products is primarily zinc, lead, sulfur, iron, silicon and calcium, and is characterized by the high content of Pb + Zn (29.35%), S (9.97%), SiO 2 (7.60%) and CaO (11.10%). The ratio of zinc oxide and zinc sulphide content is nearly 2.1 (ZnSO 4 and (Zn,Mn)Fe 2 O 4 are both …
Principles and practice of sulphide mineral …
flotation schemes to process high-grade, coarse-grained ores. Because of the depletion of these easy-to-process ores, however, flotation scientists and engineers are now …
The influence of lime and sodium hydroxide conditioning on sulfide
The influence of two alkaline pH modifiers, namely sodium hydroxide and calcium hydroxide was investigated to evaluate and compare their effectiveness in pyrite rougher flotation of a refractory gold ore with a high sulfide sulfur grade (13% S 2-), using potassium amyl xanthate as the collector and Nascol 422 as the frother.The focussing …
Fundamentals of froth flotation | ChemTexts
Froth flotation is a physicochemical separation process in which a mixture of fine mineral particles is mixed with water in a large tank (cell), and a swarm of small air bubbles …
Principles and practice of sulphide mineral flotation
flotation schemes to process high-grade, coarse-grained ores. Because of the depletion of these easy-to-process ores, however, flotation scientists and engineers are now confronted with the need to exploit existing low grade sulphide deposits with complex mineralogical composition and finely disseminated values. As a result
Synthesis and characterization of a novel collector for the
DOI: 10.1016/j.partic.2022.11.012 Corpus ID: 254359378; Synthesis and characterization of a novel collector for the desulfurization of fine high-sulfur bauxite via reverse flotation
Handbook of Flotation Reagents Chemistry, Theory and …
Emphasis is placed on froth flotation as the major technique for the beneficiation of Cu-Co minerals. Download Free PDF View PDF. ... be floated in the absence of a collector under conditions in which mild oxidation of the contained sulfide to elemental sulfur or polysulfide occurs. Each of these categories is discussed separately in this chapter.
(PDF) Selective Flotation of Elemental Sulfur from Pressure Acid
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 ...
Mechanochemical sulfidization of a mixed oxide-sulphide …
The results demonstrated that co-grinding with sulfur solely had the best flotation performance at the value of 0.5 wt.% and it was attributed to the possible existence of S O bonding on copper oxides surfaces. In addition, adding magnesium nitrate salt, magnesium powder, iron nitrate salt and aluminum powder as additive associated …
Characterization and Flotation of Sulfur from …
The copper dissolution is 95%. Chemical analyses of the leaching residue indicate the residue contains: 52% sulfur, 5% iron, 2.5% copper and 31% SR, where SR indicates the solid leaching residue of aqua regia digestion. Sulfide sulfur and trace elements balance the composition. Elemental sulfur was analyzed by solvent dissolution followed by ...
Study of the effect of ultrasonic treatment on the surface …
This chapter deals with the application of power ultrasound in the mining industry. It includes an overview of mining operations and four sections covering: the in-situ determination of rock mass stress condition by ultrasound for rock stability analysis, the use of power ultrasound to assist ore particle size reduction, application of power ultrasound …
Minerals | Free Full-Text | Simultaneous Recovery of Niobium and Sulfur
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 …
Processes | Free Full-Text | Interfacial Adsorption …
Diethyldithiocarbamate (DDTC) is employed in the sulfide ore flotation process due to its excellent collection performance. Herein, we investigated the interfacial adsorption behavior of DDTC on the four …
Effects from changes in pulp nature after ultrasonic …
A study of the effects of the pulp nature on desulphurization and de-ashing during high-sulfur coal flotation is described in this paper. Highlighted are the use of a solution oxygen gauge, a pH value gauge and a surface tension gauge to investigate changes in the pulp nature related to changes in the oxygen content, the pH value and …
Characterization and Flotation of Sulfur from …
The majority of chalcopyrite remains in the sulfur flotation tailings and can be readily recovered by flotation with different flotation reagents. When amyl xanthate …
Institute of Materials Processing (IMP) | Institute of Materials
Facilities to support processing of powder-based materials; including blending, canning, sintering, consolidation, and heat treatment. Hot Isostatic Press. Cold Isostatic Press. Vacuum Hot Press. Hydraulic press – Die Compaction. Handling, Canning, Consolidation, and Sintering of Reactive Powders. Grinding, Comminution, Blending of Powders.
Data-Driven Approximated Optimal Control of Sulfur Flotation
Sulfur flotation process is a typical industry process with complex dynamics. For a sulfur flotation cell, the structure of the system model could be derived using first-principles and reaction kinetics. However, the model parameters cannot be obtained under certain working conditions. In this paper, by using adaptive dynamic programming (ADP), …
Ultrasonic pretreatment for enhancing flotation separation …
@article{Chen2024UltrasonicPF, title={Ultrasonic pretreatment for enhancing flotation separation of elemental sulfur and silver-bearing lead minerals from an oxidative pressure leaching residue of zinc sulfide}, author={Canneng Chen and Song Zhang and Quanjun Liu and Luzheng Chen and Yongjun Xian and Yijie Wang}, journal={Minerals …
1 Froth Flotation – Fundamental Principles
1 Froth Flotation – Fundamental Principles. Froth flotation is a highly versatile method for physically separating particles based on differences in the ability of air bubbles to selectively adhere to specific mineral surfaces in a mineral/water slurry. The particles with attached air bubbles are then carried to the surface and removed, while ...
sulphur ore flotation cells – Grinding Mill China
flotation cells approx. 1 x 1 x 0.8 m up to 5 x 5 x 2 … natural hydrophobia, for example in sulfur … » Free Online Chat. 1Characterization and Flotation of Sulfur-revised. Characterization and Flotation of Sulfur from … small role in the elemental sulfur industry. When a sulfur ore was … The pulp was conditioned in the flotation cell ...
Synchronous Desulfurization and Desilication of Low …
depressant dosage from 50 to 300 g/t, the sulfur content in the concentrate increases first and then decreases. When the amount of starch was 300 g/t, the sulfur content decreases to a minimum of 0.51%. When the amount of starch was 50 g/t, the sulfur content of the concentrate was 0.54%, which also achieved good desulfurization effect. At the ...
Minerals | Free Full-Text | Selective Flotation of Elemental Sulfur
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 sulfur content reached 46.21%, and 81.97% of the sulfur existed as elemental sulfur which was the major mineral in the residue and …
Flotation of coal and sulphur from South African …
Synopsis. Flotation of coal and sulphur from a typical South African ultrafine colliery waste has been achieved in laboratory-scale batch flotation tests, using dodecane, kerosene, and oleic acid as coal collectors, and xanthates to float the sulphide minerals (with the aid of dextrin as a coal depressant). The use of oleic acid as collector ...
Study of the effect of ultrasonic treatment on the surface …
As shown in Fig. 2, a vacuum flotation device was designed to elucidate the effect of ultrasonic cleaning on floatability of coal particles.A 5 g sample of the coal of 0.5–1.5 mm was mixed with 70 ml water and ultrasonic processed for 3 min and then the sample was cooled down to room-temperature(22 °C). 5–8 coal particles ultrasonic …
Selective Flotation of Elemental Sulfur from Pressure …
The quantity–quality flowchart was drawn based on the flotation results, as shown in Figure 14. The 90.56% of S, 9.27% of Zn, 6.20% of Ag, and 2.83% of Pb in the high-sulfur pressure acid ...
1Characterization and Flotation of Sulfur-revised …
Introduction. Frash process, a solution mining method operated at an elevated temperature and pressure, has been the major process for producing elemental sulfur in the United States for many...
1 Froth Flotation – Fundamental Principles
1 Froth Flotation – Fundamental Principles. Froth flotation is a highly versatile method for physically separating particles based on differences in the ability of air bubbles to …
Flotation Decarbonization and Desulfurization of a High-Sulfur …
A high sulfur content is one of the challenges in the processing of refractory bauxites in China. The high carbon content of bauxite makes it more difficult to deal with. Desulfurization and decarbonization are the critical issues in the efficient exploitation of high-sulfur bauxite resources. An experimental study on the removal of sulfur and …
