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hydrometallurgical process

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Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006122
EISBN: 978-1-62708-175-7
... Cliff Nickel Refinery Fig. 12 103 MPa (15 ksi), 204 °C (400 °F) subsea multiphase flowmeter with PM HIP alloy 625 body Fig. 13 Test sample locations Fig. 11 Morphology of powder produced by hydrometallurgical process. 250× Fig. 9 Schematic of high pressure water...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003169
EISBN: 978-1-62708-199-3
..., and equipment of major types of metallurgical processes, including pyrometallurgical, hydrometallurgical, and electrometallurgical processes. References References 1. SME Mining Engineering Handbook , Hartman H.L. , Ed., Society for Mining, Metallurgy and Exploration, Inc., Port City Press...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006087
EISBN: 978-1-62708-175-7
... and cobalt. To obtain practical reaction rates, the actual process is carried out at elevated temperatures and pressures. For complete reduction, pH is increased by adding ammonia. Production of metal powders by hydrometallurgical processing is based on leaching an ore or ore concentrate, followed...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006121
EISBN: 978-1-62708-175-7
... differ between the major two hydrometallurgical processes. The first major difference is in the anion separation. In the SIX process, anionic impurities, such as arsenic, phosphorus, tin, and silicon, are separated by preferential extraction of the tungstate anion on the solid ion exchange resin...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006052
EISBN: 978-1-62708-175-7
... . The largest sources of cobalt are from secondary ore sources (i.e., nickel laterites) and cemented carbide scrap. Typically, hydrometallurgical processing of these materials produces pure cobalt compounds such as cobalt oxides (Co 3 O 4 and CoO), cobalt hydroxides (Co(OH) 2 , Co(OH) 3 , and HCoO 2 ), cobalt...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001070
EISBN: 978-1-62708-162-7
.... , Development of Sintered Bearings for High Speed Revolution Applications , in Modern Developments in Powder Metallurgy , Vol 12 , 1981 , p 855 – 870 5. Sintered self-lubricating bearing and process to product it , French Patent 2,555,682 , 1983 6. Shikata H. , Funabashi H. , Ebine...
Book Chapter

By Erhard Klar
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003185
EISBN: 978-1-62708-199-3
... powders, as a result of their porous structure and larger surface area, shrink more than atomized powders during sintering, and they are sometimes added to atomized powders to modify and/or adjust the shrinkage characteristics of a powder. Production of metal powders by hydrometallurgical processing...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004219
EISBN: 978-1-62708-184-9
... the incorporation of safety factors in pump and piping design. Hydrometallurgical applications in mineral processing range from low-tech heap operations to more sophisticated high-pressure leaching processes performed in autoclaves. The temperatures are approximately 260 °C (500 °F) and the pressures...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003135
EISBN: 978-1-62708-199-3
... major methods of producing such copper powders are: Atomization Oxide reduction Hydrometallurgy Electrolysis Of the previous methods, atomization and oxide reduction are presently practiced on a large scale globally. Hydrometallurgical and electrolytic copper powders have not been...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006139
EISBN: 978-1-62708-175-7
... hydrometallurgical processes for copper powder production were developed in the 1950s and 1960s. Some powders were commercially used for a number of years. Further growth of copper powder production took place with the development, during World War II, of the ferrous structural parts industry, which uses copper...
Book Chapter

By John C. Bittence
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003222
EISBN: 978-1-62708-199-3
... the equipment and procedures used for small-scale and large-scale scrapping operations. identification and sorting methods recycling of metals scrap metals scrap processing WHILE RECYCLING might appear to be a modern concept to the average layperson, it has been in practice in the metals industry...
Book Chapter

By John C. Bittence
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003222
EISBN: 978-1-62708-199-3
... the equipment and procedures used for small-scale and large-scale scrapping operations. identification and sorting methods recycling of metals scrap metals scrap processing WHILE RECYCLING might appear to be a modern concept to the average layperson, it has been in practice in the metals industry...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001118
EISBN: 978-1-62708-162-7
... the scrap, and various hydrometallurgical, pyrometallurgical, or electrometallurgical treatments to concentrate or recover the precious metals ( Table 14 ). As a result of the complexity of recovery operations, there are numerous steps to the refining process, often carried out by different companies...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006136
EISBN: 978-1-62708-175-7
... of their electrical and magnetic properties by making adjustments to the raw material and process steps ( Ref 2 ). In some cases, the powder form of the metal is one of the most readily available forms. This is usually the case when the powder is the product of a hydrometallurgical (Ni, Cu), electrolytic (Fe, Cu...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005738
EISBN: 978-1-62708-171-9
...), oxidation, and sintering, ll of which depend on the level of heat exposure. In smaller stationary gas turbines (e.g., marine, small power plant, chemical processing), start/stop cycle frequencies may range from daily to less than once or twice per year, subjecting the abradable coating system to increasing...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006109
EISBN: 978-1-62708-175-7
...) 1.22 75% above 44 (+325 mesh) 1.25 Copper Electrolysis 90% min, −325 mesh 1.5–1.75 Hydrometallurgical 81.9%, −325 mesh 1.69 Oxide reduced 95% min, −325 mesh 2.10–2.50 Hydrometallurgical 49.1%, −325 mesh 2.42 Oxide reduced 50–65%, −325 mesh 2.65–2.85 Electrolysis 60...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005602
EISBN: 978-1-62708-174-0
... in both cases. Fig. 13 Clad plates after final processing Fig. 7 Plot of collision angle versus collision velocity to obtain a typical explosion welding process parametric envelope for both similar- and dissimilar-metal combinations. See text for details. Fig. 9...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003147
EISBN: 978-1-62708-199-3
... the majority of extracted nickel originates from sulfide ores. Once mined and crushed, sulfide ores are readily upgraded by flotation and magnetic separation allowing the separation of nickel, copper, and iron concentrates. Pyrometallurgical, hydrometallurgical, electrolytic, and vapometallurgical processes...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003131
EISBN: 978-1-62708-199-3
... for sale to brass mills. Hydrometallurgical processing is an increasingly important alternative to pyrometallurgy, particularly for nonsulfide ores such as oxides, silicates, and carbonates. In this process, weak acid is percolated through ore or waste dumps of rejected materials. Copper is leached out...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003789
EISBN: 978-1-62708-177-1
...× Fig. 57 Micrograph of Ti-6Al-4V BE compact treated to produce a broken-up structure Fig. 58 Micrographs of Ti-6Al-4V BE compact. (a) Fully dense, pressed-and-sintered, and hot isostatically pressed compact. (b) Compact treated with thermochemical processing Fig. 31 Example...