Data-Driven Approximated Optimal Control of Sulfur …
The operation objective of a sulfur flotation process is to recover as much as high-graded sulfur as possible from the mineral …
Modeling and optimization of chemical reagents to
The main results demonstrated that sulfur recovery can reach up to 97 % using the following optimal conditions: pH of 11.5, PAX dosage of 158 g/t, CuSO4 dosage of 300 g/t, MIBC dosage of 55 g/t ...
Metals | Free Full-Text | Flotation Performance, Structure …
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 flotation …
Desulfurization in high-sulfur bauxite with a novel thioether
Since the structure optimization of organic molecules was involved, B3LYP was selected as the functional, and D3 correction was involved [17]. In addition, the basis set had to be selected according to the different calculation requirements. ... 2-BTHA has great advantages and potential in desulfurization flotation of high-sulfur bauxite ...
(PDF) 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 ...
The Use of Tecflote Family Collectors in Copper–Nickel Ore Flotation …
They interact with the mineral surface through the thiol sulfur atom . A promising trend is the use of complexing agents prone to chelating with transition metal ions for sulfide ore flotation. The donor atoms in chelating agents are mainly nitrogen, oxygen, and sulfur atoms. ... Flotation Optimization and Interaction Mechanisms, Miner. Eng ...
Research progress on desulfurization technology of high-sulfur …
Results showed that when roasting at 650 °C for 120 s, the desulfurization efficiency was up to 76.98%, while the residual sulfur in the roasted ore was found to be 0.07%. HU et al [24] roasted high-sulfur bauxite ore at 600 °C for 60 min, and the dissolution test was performed at 240 °C and roasted for 60 min.
Optimization of an oil recovery process from oily sludge …
Furthermore, there is no literature on the optimization of flotation kinetic model of OS and the recycling of wastewater of flotation. ... The basic elemental composition of the oil phase in OS, such as carbon (C), hydrogen (H), sulfur (S), and nitrogen (N), was determined using a CHNS analyzer (VARIO EL CUBE, Germany), and …
Optimizing the Rougher Flotation Process of Copper Ore
Diagram of the process of obtaining copper concentrate from sulfur. Full size image. 1.1 The Flotation Process. ... Other implementations of genetic algorithms for the optimization of the flotation circuit design include a process-oriented variant that takes into account some technological limitations in order to simplify the configuration of ...
Ultrasound Assisted Ash and Sulphur Removal from Bitumen …
To remove ash and pyritic sulphur from bitumen an experimental study was performed to investigate the use of low frequency ultrasound wave in column flotation. For this purpose, a column flotation rig was equipped with a low frequency 24 kHz ultrasound transducer. The bitumen samples had sulphur content of 9.6 % (6.81 % in the pyritic …
Processes | Free Full-Text | Interfacial Adsorption Mechanism …
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 main mineral phases of high-sulfur residue: sulfur, pyrite, sphalerite, and lead sulfate. The adsorption behavior of DDTC and H2O, …
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), …
Process Mineralogy Characteristics and Flotation Optimization …
The beneficiation of low-grade oxidized lead and zinc ore from the Lanping mine has attracted extensive interest in the mineral processing field due to the extremely rich resource reserves and the challenge in lead and zinc recovery. This study's objective is to analyze the process mineralogy characteristics and to conduct the flotation …
Optimization of biogenic sulfur flocculation from an anoxic
Semantic Scholar extracted view of "Optimization of biogenic sulfur flocculation from an anoxic desulfurization bioreactor using response surface methodology" by S. Torres-Herrera et al. ... An efficient flotation process was developed to selectively recover elemental sulfur from a high-sulfur pressure acid leaching residue of zinc sulfide ...
Enhanced separation of pyrite from high-sulfur bauxite …
The existence of sulfide minerals (mainly pyrite) limits the use of high-sulfur bauxite in the production of Bayer alumina. In this work, the reverse flotation desulfurization using 2-mercaptobenzimidazole (MBI) as the collector was studied by L 9 (3 4) orthogonal tests.The interaction mechanisms of MBI with pyrite were investigated by advanced …
Design, Modeling, Optimization and Control of …
Conceptual or simulation of flotation processes; Optimization of flotation processes (single or multi-objectives, uncertainty, and sensitivity analyses); Novel …
Flotation stabilization and optimization
Improved flotation operation can be achieved by improved control in terms of stabilization, regulation and optimization of the plant. Through stable operation, the performance of the plant is observed without being obscured by the effects of disturbances and fluctuations. This allows for the optimum conditions to be easily identified.
Insights into the design of polymetallic ore flotation circuits
The tailing generation without sulfur species was included using a most proactive approach. ... Section 2 presents the methodology, which is based on the application of flotation circuit design optimization. Section 3 is related to the strategies used in the design of flotation circuits, including an extension of the strategies used in …
Clean desulfurization of sulfur−rich tungsten
The average sulfur content in tungsten concentrates decreased from 4.53% to 1.77%. The average WO3 grade of tungsten concentrates increased from 37.50% to 41.14%. The low cost and environmental ...
OPTIMIZATION OF PARAMETERS IN COLUMN FLOTATION …
Using column flotation in an optimal condition led to the remarkable reduction of sulfur so that the final concentrate with the sulfur grade lower than 0.1 % and iron recovery over 98% was obtained.
Data-Driven Approximated Optimal Control of Sulfur …
For a sulfur flotation cell, the structure of the system model could be derived using first-principles and reaction kin... Data-Driven Approximated Optimal Control of Sulfur …
Parametric Optimization in Rougher Flotation …
Masdarian, M.; Azizi, A.; Bahri, Z. Mechanochemical sulfidization of a mixed oxide-sulphide copper ore by co-grinding with sulfur and its effect on the flotation efficiency. Chin. J. Chem. Eng. 2020, 8, …
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 …
Enhanced separation of pyrite from high-sulfur bauxite …
The existence of sulfide minerals (mainly pyrite) limits the use of high-sulfur bauxite in the production of Bayer alumina. In this work, the reverse flotation desulfurization using 2-mercaptobenzimidazole (MBI) as the collector was studied by L 9 (3 4 ) orthogonal tests. The interaction mechanisms of MBI with pyrite were investigated by advanced analysis …
Flotation Separation of Pyrite from Refractory High-Sulfur Bauxite
Effect of Pulp pH. Pulp pH is an important parameter in the flotation of high-sulfur bauxite, which would influence the surface charge and floatability of minerals [].The Effect of pulp pH on the sulfur content in the concentrate and Al 2 O 3 recovery was investigated and shown in Fig. 4.The flotation conditions were fixed as TMBI dosage …
Environmental remediation of sulfidic tailings with froth flotation …
Optimization of sulfidic tailings flotation. The sulfur recovery and grade results obtained after 30 min of flotation are displayed in Table 7. As seen, a broad range of recovery values was obtained, from 30 to 92%. ... Sulfur results of the flotation experiments. Experiment number Mass pull at 30 min (%) Sulfur recovery at 30 min (%)
Flotation Desulfurization of Acidified High-Sulfur …
The flotation test results obviously show that sodium silicate is an effective regulator for flotation desulfurization and can not only improve inhibition of pyrite caused …
Optimization of coal flotation using statistical technique
The information can be utilized for optimization purpose. The objective of the work was to determine the effects of variables using statistical techniques on flotation of high ash non-coking coal used in thermal power plant and find out optimum condition for its flotation. The different steps of optimization strategy used in this study are: 1.
Flotability of galena and pyrite using 2 …
Enhanced separation of pyrite from high-sulfur bauxite using 2-mercaptobenzimidazole as chelate collector: Flotation optimization and interaction mechanisms. Wencui Chai Yan-fang Huang W. Peng Guihong Han Yijun Cao Jiongtian Liu
Competition of Oxygen Evolution and Desulfurization for …
Enhanced separation of pyrite from high-sulfur bauxite using 2-mercaptobenzimidazole as chelate collector: Flotation optimization and interaction mechanisms. Minerals Engineering 2018, 129, 93-101. ... Sulfur Removal by Adding Iron During the Digestion Process of High-sulfur Bauxite. Metallurgical and Materials Transactions B 2018, 49 (2) ...
