A Selective Method for Chemical Extraction of Antimony …
Minerals of tetrahedrite group are categorized among the sulfosalt family and are also the most prevalent complex sulfides [].These minerals are easily floated with physicochemical process, which is a useful method to recover valuable metals from ores, and it is widely used in the flotation recovery of copper, lead, zinc, antimony, etc. [2,3,4]. ...
Selective leaching of antimony from tetrahedrite rich
Selective alkaline leaching of antimony from Low-grade refractory gold ores and process optimization. 2023, Minerals Engineering. ... Furthermore, the response surface method was applied to distinguish the interaction influence of process parameters on the antimony and gold extraction rate. It is detected that the polysulfides and …
(PDF) Optimization of Alkaline Sulfide Leaching of Gold-Antimony …
On the basis of optimization studies [13][14] [15], the maximum extraction of antimony in the solution was determined and the gold losses during sulfide-alkaline leaching were minimized: L/S = 4.5 ...
Optimization of Antimony Removal by Coagulation …
Coprecipitation-adsorption plays a significant role during coagulation-flocculation-sedimentation (C/F/S) of antimony (Sb) in water. This work uses a Box–Behnken statistical experiment design (BBD) and response surface methodology (RSM) to
Optimization of CIGS-based PV device through antimony …
A solution-based spin coating process was used as a deposition method to demonstrate the effect of antimony-doping on the properties of the CIGS films and the solar cell device. The approach relied on forming a soluble molecular-based metal chalcogenide precursor in hydrazine at room temperature, while device-quality CIGS films were easily ...
Preparation of Antimony Metal by Carbothermal …
RESEARCH ARTICLE. Preparation of Antimony Metal by Carbothermal Reduction of Antimony Oxide Powder in a Microwave Field: Mechanism and Process. Lingbo Li1,2 · …
Enhancing the efficiency and longevity of inverted perovskite …
For the spin-coating process, the substrate was spinning at 5,000 r.p.m. for 40 s with an acceleration of 5,000 r.p.m. s −1 and N 2 gas was blown on top of the spinning substrates after 20 s.
Photonic crystal structures for light trapping in thin-film Si …
An example of the optimization process is shown in Fig. 4 (a). Here we start with a planar 2D device structure with a period Λ, consisting of air (semi-infinite), 1.5 μm c-Si, 0.5 μm SiO 2 and a perfect reflector on the backside. The c-Si layer is assumed to be weakly absorptive, with a constant absorption coefficient.
Preparation of Antimony Metal by Carbothermal …
The development of a response surface optimization model can provide a reference for the optimization of process parameters for the preparation of antimony …
Modelling and process optimisation of antimony removal …
Consequently, the model from a response surface methodology is considered to be accurate and reliable, for predicting the leaching of antimony and tin from the complex copper concentrate, and also good at predicting the time needed to recover 90% of the antimony from the concentrate. 3.5 Process optimization and economic …
(PDF) Modelling and process optimisation of …
The present research is aimed at (i) purifying impure complex copper sulphide concentrates by selectively dissolving the impurities, and consequently, upgrading the concentrates for …
Optimization of the electrodeposition process of high …
High-quality films of bismuth antimony telluride were synthesized by electrodeposition from nitric acid electroplating baths. The influence of a surfactant, sodium ligninsulfonate, on the structure, morphology, stoichiometry, and homogeneity of the deposited films has been investigated. ... Optimization of the electrodeposition process …
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Finally, antimony was recovered from the leach liquor in the form of NaSb(OH) 6. This study can pave the way for the development of new hydrometallurgical processes for antimony recovery from the sulfide minerals. ... Process optimization and kinetic studies. Journal of Environmental Management (IF 8.7) Pub Date: , DOI: 10.1016/j ...
A selective process for extracting antimony from refractory …
China leads the global antimony production (67% on an average from 2015 to 2019) followed by Russia and Tajikistan. Antimony has been applied in the industry (plastics, etc.) and new/emerging technologies (cell panels, infrared, etc.) where antimony trioxide (Sb 2 O 3) is its most produced and used compound. With technological …
Fuzzy association rule-based set-point adaptive optimization …
A general industrial process control scheme usually involves an optimization module which generates the set-points of the operational indices that maximize the economic performance function, and a controller which tracks the set-points [1,2,3].A case in point is the froth flotation which is an important mineral concentration …
Wet oxidation process optimization of antimony recovery …
The purity of electrolytic antimony was 99.4% and gold and silver were enriched 8–9 times in the anode slime, therefore providing an effective separation of precious metals from antimony by ...
Selective alkaline leaching of antimony from Low-grade …
DOI: 10.1016/j.mineng.2023.108198 Corpus ID: 259698283; Selective alkaline leaching of antimony from Low-grade refractory gold ores and process optimization @article{Zhang2023SelectiveAL, title={Selective alkaline leaching of antimony from Low-grade refractory gold ores and process optimization}, author={Feiyu Zhang and Ya-ru …
Optimization, Kinetics, Isotherms, and …
Thus, the main objectives of this study are: (1) to evaluate the interactive effects of influencing factors (current density, pH, initial concentration, and …
Two-Step Optimal-Setting Control for Reagent Addition in …
They have been used for control and optimization of the froth flotation process in an increasing number of studies [10,11,12,13,14,15,16]. Meanwhile, in practice, operational experience is very important for reagent addition and has been the topic of some investigations. ... Due to the complex physicochemical reactions in the gold …
(PDF) Modelling and process optimisation of antimony …
3.4 Model validation In order to test the validity of the model with regards to the response variables of recovery of Sb and Sn, and t90, a separate leaching experiment was performed at the conditions predicted by the model, as 3.5 Process optimization and economic implications Furthermore, optimization of the factors affecting the leaching ...
Reduction mechanism and optimization of prepare metallic antimony …
The mechanism of microwave carbothermal reduction of Sb2O3 was investigated by XRD, SEM-EDS and Mapping analysis, the results show that the microwave reduction process is divided into three stages based on the melting point of antimony, namely, 25 °C–400 °C, 400 °C–630 °C, and above 630 °C, which differ in terms of phase transformation.
Reduction mechanism and optimization of prepare metallic antimony …
In this work, a clean microwave carbothermal reduction of Sb2O3 mineral to prepare metallic antimony ingot is proposed. Response surface methodology was used to optimize condition for microwave ...
Optimization of the Electrodeposition Process of High …
In this work, we report the optimization of annealing process to improve the thermoelectric properties of pulse electrodeposited bismuth antimony telluride (Bi–Sb–Te) films by varying the ...
A selective process for extracting antimony from refractory …
Preparation of Antimony Sulfide and Enrichment of Gold by Sulfuration–Volatilization from Electrodeposited Antimony. Electrodeposited antimony can be treated with sulfuration–volatilization technology, which causes antimony to volatilize in the form of antimony sulfide. During this process, gold is enriched in the….
Selective alkaline leaching of antimony from Low-grade
Download Citation | On Oct 1, 2023, Feiyu Zhang and others published Selective alkaline leaching of antimony from Low-grade refractory gold ores and process optimization | Find, read and cite all ...
Photonic crystal structures for light trapping in thin-film Si …
In this paper, we present our efforts on studying light trapping in thin-film silicon solar cells using photonic crystal (PC) based structures. Specifically, we propose a photonic backside texture combining periodic gratings and a distributed Bragg reflector (DBR). The mechanisms of this integrated photonic design are theoretically studied and …
Process Optimization Explained
Process optimization is a set of methods and tools used to make processes more efficient and effective. There are several types of process optimization techniques, including process mapping, process mining, and Six Sigma. When optimizing a process, it's important to identify goals, analyze current processes, develop an optimized process, …
Business Process Optimization: What, How, Why? (Free …
Process optimization definition. Process optimization is the discipline of adjusting a process so as to optimize (make the best or most effective use of) some specified set of parameters without violating some constraint. Taguchi's Quality Engineering Handbook – Genichi Taguchi, Subir Chowdhury, Yuin Wu.
Optimization, Kinetics, Isotherms, and Thermodynamics Studies …
Under the optimal conditions of current density 2.58 mA/cm2, pH 5.24, initial concentration 521.3 μg/L, and time 89.17 min, more than 99 % antimony were removed. Besides, the antimony adsorption ...
Optimization, Kinetics, Isotherms, and Thermodynamics …
antimony removal. However, the interactive effects of influencing factors on antimony removal were not in-vestigated and the optimization of EC process is still needed a subject of further investigation. Of late, Response Surface Methodology (RSM), a collection of mathematical and statistical methodology, has been