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Article
Ionic Liquids in the Extraction and Recycling of Critical Metals from Urban Mines
Ionic liquids (ILs), salts with a melting temperature below the boiling point of water, are one of the most recent fashion trends in modern chemistry. Nowadays, and taking into account the extensive research f...
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Article
Multivariate mean square error for the multiobjective optimization of AISI 52100 hardened steel turning with wiper ceramic inserts tool: a comparative study
This work aims at comparing the optimization of an AISI-52100-steel turning process with a wiper tool attained through the use of the weighted multivariate mean square error (MMSE) method and that obtained thr...
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Article
Normal boundary intersection method based on principal components and Taguchi’s signal-to-noise ratio applied to the multiobjective optimization of 12L14 free machining steel turning process
When it comes to multiobjective optimization problems, the challenge is to find a solution that satisfies all the answers simultaneously. When the responses are correlated and present conflicting objectives, i...
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Article
Optimization of AISI 1045 end milling using robust parameter design
AISI 1045 steel end milling, which enables manufacturers to machine parts with low-cost tools, has been gaining prominence in the industry. To ensure the quality of the final products though, it is important t...
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Article
Development of a special geometry carbide tool for the optimization of vertical turning of martensitic gray cast iron piston rings
The machining process for vertical turning martensitic gray cast iron is of great importance to the automotive industry, mainly in the manufacturing process of piston rings. The aim of this paper is to demonst...
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Article
Mathematical Modeling of Weld Bead Geometry, Quality, and Productivity for Stainless Steel Claddings Deposited by FCAW
In recent years, industrial settings are seeing a rise in the use of stainless steel claddings. The anti-corrosive surfaces are made from low cost materials such as carbon steel or low alloy steels. To ensure ...
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Article
Sensitivity analysis in discrete-event simulation using fractional factorial designs
This paper presents a sensitivity analysis of discrete-event simulation models based on a twofold approach formed by Design of Experiments (DOE) factorial designs and simulation routines. This sensitivity anal...
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Article
A multivariate mean square error optimization of AISI 52100 hardened steel turning
Hardened steel turning has received special attention in recent years due to its many applications in modern industries. The characteristics that define its machinability—expressed in terms of multiple respons...
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Article
Solvent extraction associated with activation analysis: A helpful tool
The aim of this paper is to put in evidence the role played by solvent extraction when it is used as an analytical tool, in association with activation analysis, to avoid problematic interferences or to increa...
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Article
Recent advances on the chemistry of solvent extraction applied to the reprocessing of spent nuclear fuels and radioactive wastes
After a brief description of the PUREX process as a starting point, this paper aims to point out some of its most recent developments, always from the viewpoint of the chemistry involved in the solvent extract...
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Article
Towards an understanding of solvent extraction – electroanalytical characterization of chloride-leaching solutions
Solvent extraction has been employed to purify media simulating chloride-leaching solutions resulting from complex sulfide concentrate processing, and cyclic voltammetry (CV) has been chosen to characterize t...
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Chapter
Pretreatment by electrolytic or oxidative leaching for recovery of gold and silver from refractory sulphide concentrates
Anodic electroleaching or leaching using acid chloride media can be used to release the fine gold grains locked in a Portuguese arsenopyrite concentrate that exhibits refractory behaviour towards direct oxidat...
