Arsenic loss during metallurgical processing of arsenical bronze

2017 ◽  
Vol 11 (1) ◽  
pp. 133-140 ◽  
Author(s):  
Marianne Mödlinger ◽  
Raquel de Oro Calderon ◽  
Roland Haubner
Keyword(s):  
Metallurgical Processing

Metallurgical processing in space

1974 ◽  
Author(s):  
E. MCKANNAN
Keyword(s):  
Metallurgical Processing

SANDVIK 3R12HT

Alloy Digest ◽  
2002 ◽  
Vol 51 (4) ◽  
Keyword(s):  
Mechanical Properties ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Heat Treating ◽  
Bend Strength ◽  
Steel Company ◽  
Temperature Performance ◽  
Metallurgical Processing

Abstract Sandvik 3R12HT is an improved version of Type 304L for better mechanical properties at high temperatures. This is accomplished by improved metallurgical processing and a modified chemistry. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and bend strength as well as creep. It also includes information on high temperature performance and corrosion resistance as well as heat treating and joining. Filing Code: SS-850. Producer or source: Sandvik Steel Company.

WAYS TO SOLVE THE PROBLEM OF CONVERTER SLAG UTILIZATION IN METALLURGICAL PROCESSING

Metallurg ◽  
2021 ◽  
pp. 88-96
Author(s):  
N.B. Aitbaev ◽  
E. Kobegen ◽  
E.V. Skranzhevskaya ◽  
B.M. Boranbaeva
Keyword(s):  
Converter Slag ◽  
Metallurgical Processing

scholarly journals Powder metallurgical processing of iron for biodegradable medical implants: Physical and mechanical

2016 ◽  
Vol 4 ◽  
Author(s):  
Martins Vinicius ◽  
Tavares Andr� ◽  
Schaeffer Lirio ◽  
Wermuth Diego
Keyword(s):  
Medical Implants ◽  
Metallurgical Processing

scholarly journals Microstructural Transitions during Powder Metallurgical Processing of Solute Stabilized Nanostructured Tungsten Alloys

Metals ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 159
Author(s):  
Nicholas Olynik ◽  
Bin Cheng ◽  
David J. Sprouster ◽  
Chad M. Parish ◽  
Jason R. Trelewicz
Keyword(s):  
Extreme Environments ◽  
High Energy ◽  
Grain Structure ◽  
Coarse Grained ◽  
Ultrafine Grain ◽  
Grain Boundary Engineering ◽  
Carbon Impurities ◽  
Grain Structures ◽  
Metallurgical Processing ◽  
Size Population

Exploiting grain boundary engineering in the design of alloys for extreme environments provides a promising pathway for enhancing performance relative to coarse-grained counterparts. Due to its attractive properties as a plasma facing material for fusion devices, tungsten presents an opportunity to exploit this approach in addressing the significant materials challenges imposed by the fusion environment. Here, we employ a ternary alloy design approach for stabilizing W against recrystallization and grain growth while simultaneously enhancing its manufacturability through powder metallurgical processing. Mechanical alloying and grain refinement in W-10 at.% Ti-(10,20) at.% Cr alloys are accomplished through high-energy ball milling with transitions in the microstructure mapped as a function of milling time. We demonstrate the multi-modal nature of the resulting nanocrystalline grain structure and its stability up to 1300 °C with the coarser grain size population correlated to transitions in crystallographic texture that result from the preferred slip systems in BCC W. Field-assisted sintering is employed to consolidate the alloy powders into bulk samples, which, due to the deliberately designed compositional features, are shown to retain ultrafine grain structures despite the presence of minor carbides formed during sintering due to carbon impurities in the ball-milled powders.

Metallurgical processing of Mg alloys and MgH2 for hydrogen storage

2021 ◽  
pp. 162798
Author(s):  
W.J. Botta ◽  
G. Zepon ◽  
T.T. Ishikawa ◽  
D.R. Leiva
Keyword(s):  
Hydrogen Storage ◽  
Mg Alloys ◽  
Metallurgical Processing

scholarly journals Ammoniacal Solvoleaching of Copper from High-Grade Chrysocolla

2020 ◽  
Vol 6 (4) ◽  
pp. 589-598
Author(s):  
Lukas Gijsemans ◽  
Joris Roosen ◽  
Sofía Riaño ◽  
Peter Tom Jones ◽  
Koen Binnemans
Keyword(s):  
Silica Gel ◽  
Aqueous Ammonia ◽  
Acid Leaching ◽  
Leach Solution ◽  
Phase System ◽  
Flow Sheet ◽  
High Grade ◽  
Gel Formation ◽  
Metallurgical Processing ◽  
Three Phase

AbstractThe copper silicate ore chrysocolla forms a large potential copper resource, which has not yet been fully exploited, due to difficulties associated with its beneficiation by flotation and metallurgical processing. Direct acid leaching of chrysocolla causes silica gel formation. Therefore, in this work, the feasibility of solvometallurgical methods to leach copper from high-grade chrysocolla while avoiding issues with silica gel formation was assessed. Ammoniacal solvoleaching was performed with a solvent comprising the chelating extractant LIX 984 N or the acidic extractant Versatic acid 10 in an aliphatic diluent (ShellSol D70 or GTL Fluid G70), combined with a small volume of aqueous ammonia. In the three-phase system, aqueous ammonia dissolves copper from milled and sieved chrysocolla, while copper is simultaneously extracted to the organic phase, releasing ammonia that can be reused for further extraction. The best results were obtained with LIX 984 N as extractant: using a 50 vol% LIX 984 N solution, about 75% of copper could be extracted after 60 min of leaching at 25 °C. The stripping of copper from the pregnant leach solution was optimized. Quantitative stripping of copper was achieved with 1.89 M sulfuric acid and the final aqueous solution of copper sulfate had a concentration of 33 g L−1. Experiments in a leaching reactor (1 L) and small battery of mixer-settlers (3 stages, 35 and 143 mL effective volume in the mixer and the settler, respectively, per stage) were successfully conducted and allowed to recover copper with a purity of 99.9%. A conceptual flow sheet has been developed. Graphical Abstract

scholarly journals Mineral Processing and Metallurgical Treatment of Lead Vanadate Ores

Minerals ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 197 ◽  
Author(s):  
Ivan Silin ◽  
Klaus Hahn ◽  
Devrim Gürsel ◽  
Dario Kremer ◽  
Lars Gronen ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Vanadium Oxide ◽  
Chemical Properties ◽  
Mineral Processing ◽  
Primary Sources ◽  
The Past ◽  
Research Activities ◽  
Metallurgical Processing ◽  
Hydrometallurgical Treatment ◽  
Lead Vanadate

Vanadium has been strongly moving into focus in the last decade. Due to its chemical properties, vanadium is vital for applications in the upcoming renewable energy revolution as well as usage in special alloys. The uprising demand forces the industry to consider the exploration of less attractive sources besides vanadiferous titanomagnetite deposits, such as lead vanadate deposits. Mineral processing and metallurgical treatment of lead vanadate deposits stopped in the 1980s, although the deposits contain a noteworthy amount of the desired resource vanadium. There has been a wide variety of research activities in the first half of the last century, including density sorting and flotation to recover concentrates as well as pyro- and hydrometallurgical treatment to produce vanadium oxide. There have been ecological issues and technical restrictions in the past that made these deposits uninteresting. Meanwhile, regarding the development of mineral processing and metallurgy, there are methods and strategies to reconsider lead vanadates as a highly-potential vanadium resource. This review does not merely provide an overview of lead vanadate sources and the challenges in previous mechanical and metallurgical processing activities, but shows opportunities to ensure vanadium production out of primary sources in the future.

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